Range hood

Abstract

This utility model relates to a range hood, comprising: a fan frame, including a fan frame body and an air outlet plate located at the top of the fan frame body; the fan frame body includes a back plate located at the rear, the back plate having an upper extension plate extending upward relative to the air outlet plate; the upper extension plate of the back plate has a set of mounting holes for hanging and mounting with an external mounting bracket, the set of mounting holes having at least two arranged sequentially in the vertical direction. The advantages are: it provides ample and safe lower operating space for maintenance personnel, eliminating the need for risky operations on top of the machine or in narrow spaces close to the wall, and eliminating the need to completely move the heavy entire machine, greatly simplifying the maintenance process and reducing operational difficulty and safety hazards.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a range hood. Background Technology

[0002] A range hood is a kitchen appliance used to purify the kitchen environment. A range hood generally consists of a fan frame, a smoke collection hood, and a fan system, with the fan system housed within the fan frame. During installation, the range hood is mounted to the wall using a mounting bracket equipped with hooks, and corresponding hanging holes are provided on the back panel of the fan frame. The mounting bracket is typically fixed in place, thus fixing the installation height of the range hood. When maintenance is needed, the entire range hood must be disassembled, which is inconvenient for users. For example, Chinese utility model patent application number CN201120248712.7 discloses such an installation structure for a range hood.

[0003] Therefore, existing range hoods still need further improvement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a range hood that can be matched with the mounting bracket at different heights, thereby facilitating maintenance, in light of the current state of the technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a range hood, comprising:

[0006] A fan frame includes a fan frame body and an air outlet plate located at the top of the fan frame body. The fan frame body includes a back plate located at the rear side, and the back plate has an upper extension plate extending upward relative to the air outlet plate.

[0007] The upper extension plate of the back plate is provided with a set of hanging holes for mounting with an external mounting bracket. The set of hanging holes has at least two holes arranged sequentially in the vertical direction.

[0008] When the range hood needs maintenance (such as cleaning the impeller, replacing the motor, or repairing the circuitry), installers do not need to completely remove the entire unit from the mounting bracket. They simply need to detach the hooks from the currently used upper mounting hole group, then move the entire unit downwards so that the hooks re-attach to the lower mounting hole group. This lowers the overall position of the range hood, but its rear remains connected to the mounting bracket via hooks, resulting in a relatively stable and lowered "semi-disassembled" state. This provides ample and safe lower operating space for maintenance personnel, eliminating the need to risk operating on top of the machine or in narrow spaces close to the wall, and avoiding the need to completely move the heavy unit. This greatly simplifies the maintenance process and reduces operational difficulty and safety hazards. Maintenance only requires a simple "lowering and repositioning" operation, significantly reducing the steps and risks associated with complete disassembly and reinstallation (such as the unit falling or wiring being pulled). This not only improves maintenance efficiency but also reduces the possibility of damage to the machine or wall hooks due to frequent disassembly and reassembly. For both users and professional maintenance personnel, this greatly enhances the convenience and safety of operation.

[0009] To ensure the overall stability of the range hood after installation, each of the aforementioned hanging hole groups includes at least two hanging holes arranged sequentially in the horizontal direction.

[0010] Considering that the range hood generally needs to be lowered during maintenance, the lowest mounting hole group is designated as the first mounting hole group, used for normal operation. The remaining mounting hole groups are designated as the second mounting hole group, used for maintenance. However, in some cases, such as cleaning the range hood, it may be necessary to raise it (from its normal height). Therefore, in the optional configuration, the middle mounting hole group can be used for normal operation, the higher mounting hole groups for maintenance, and the lower mounting hole groups for cleaning.

[0011] The aforementioned "maintenance status" can be understood as a temporary use state in which the range hood is lowered to a low position to inspect and repair internal components such as the fan and circuit. At this time, the height of the hood is lower than the normal cooking position.

[0012] Considering that the first mounting hole group is prone to fatigue deformation under long-term stress, affecting safety, a reinforcing plate is also provided on the front side of the upper extension plate, located around the mounting holes of the first mounting hole group. The reinforcing plate increases local rigidity, preventing tearing of the plate material around the mounting holes; it also specifically reinforces high-frequency use areas, extending the overall lifespan of the machine. The reinforcing plate can be welded to the upper extension plate.

[0013] For ease of installation and to save materials, the reinforcing plate is a U-shaped plate with an open bottom.

[0014] As an improvement, the inner edge of the reinforcing plate also has a forward-folded reinforcing rib. The design of the folded reinforcing rib can significantly improve the bending strength.

[0015] To prevent the hanging holes of the first reinforcing type from tearing due to insufficient strength, the outer periphery of the hanging holes of the first hanging hole group has a first reinforcing type, and the reinforcing plate is located on the periphery of the first reinforcing type.

[0016] To prevent the second reinforcing type of hanging hole from tearing due to insufficient strength, the outer periphery of the hanging hole of the second hanging hole group has a second reinforcing type.

[0017] To adapt to the width of the range hood's fan bracket and optimize the balance, stability, and installation compatibility of the hole spacing, the distance between two adjacent hanging holes in the left-right direction in each of the hanging hole groups is in the range of [200mm, 400mm], and the corresponding hanging holes in each of the hanging hole groups are aligned in the up-down direction.

[0018] To match the installation height of the range hood, the distance between two adjacent hanging hole groups in the vertical direction in each of the aforementioned hanging hole groups is in the range of [50mm, 150mm].

[0019] As an improvement, the upper extension plate has a forming area extending in the left-right direction, and the second set of hanging holes is arranged on the forming area of ​​the upper extension plate. Utilizing the forming area provided by the upper extension plate itself can improve the rigidity of the fan frame, eliminate the need for additional reinforcing components, and reduce costs.

[0020] As an improvement, a first connecting hole is provided on the upper extension plate in the area between two adjacent hanging holes of the first hanging hole group, allowing a fastener to pass through. The fastener passes through the first connecting hole and the external mounting bracket, and is then connected to the wall. Fixing the fan frame, mounting bracket, and wall together with fasteners significantly improves earthquake resistance and resistance to external impacts. The fasteners can be screws, which secure the range hood fan frame, mounting bracket, and wall, further ensuring the machine will not fall off and reminding the user that the hanging holes are at the correct height; after maintenance, the machine needs to be raised back to the correct height.

[0021] In this invention, "pressing" can refer to a reinforced structure (such as ribs or grooves) formed on a metal sheet through processes such as stamping or rolling, used to improve local rigidity. For example, it can be an annular boss or shallow groove structure around a hanging hole.

[0022] Compared with existing technologies, the advantages of this invention are as follows: When the range hood needs maintenance (such as cleaning the impeller, replacing the motor, or repairing the circuit), installers do not need to completely remove the entire unit from the mounting bracket. They only need to detach the hooks from the currently used upper mounting hole group, and then move the entire unit downwards so that the hooks re-attach to the lower mounting hole group. In this way, the overall position of the range hood is lowered, but its rear remains connected to the mounting bracket via hooks, resulting in a relatively stable and lower "semi-disassembled" state. This provides maintenance personnel with ample and safe lower operating space, eliminating the need to risk operating in narrow spaces on top of the machine or against the wall, and eliminating the need to completely move the heavy unit, greatly simplifying the maintenance process and reducing operational difficulty and safety hazards. Maintenance only requires a simple "lowering and changing of holes" operation, significantly reducing the steps and risks associated with completely disassembling and reinstalling the entire unit (such as the unit falling or the wiring being pulled). This not only improves maintenance efficiency but also reduces the possibility of damage to the machine or wall hooks due to frequent disassembly and reassembly. For both users and professional maintenance personnel, this greatly improves the convenience and safety of operation. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a range hood according to an embodiment of the present utility model, showing a mounting bracket that mates with a first set of hanging holes;

[0024] Figure 2 This is a three-dimensional structural diagram of the range hood according to an embodiment of the present utility model, with the mounting bracket in a separated state;

[0025] Figure 3 This is a three-dimensional structural diagram of the range hood according to another embodiment of the present utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of a range hood according to an embodiment of the present utility model, showing a mounting bracket that mates with a second set of hanging holes. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0029] Figures 1-4 A preferred embodiment of the range hood of this utility model is shown. The range hood includes a housing and a fan system disposed within the housing, the fan system generally being a centrifugal fan. The housing includes a fan frame 1 and a smoke collection hood disposed at the bottom of the fan frame 1, the inner cavity of the fan frame 1 communicating with the inner cavity of the smoke collection hood. The smoke collection hood is not shown in the accompanying drawings; the structure of the smoke collection hood is prior art and will not be described in detail here.

[0030] The fan frame 1 in this embodiment includes a fan frame body 10 and a top air outlet plate 12. The air outlet plate 12 extends horizontally and has an air outlet for connecting to an external exhaust pipe. The rear side of the fan frame body 10 is provided with a back plate 11 for wall mounting, and the top of the back plate 11 extends upward from the top surface of the air outlet plate 12 to form an upper extension plate 111.

[0031] At least two sets of mounting holes are provided on the upper extension plate 111, such as Figure 1 Two sets of hanging holes are shown: a first set 21 and a second set 22, arranged vertically. The first set 21 (the lower set) is used at normal cooking height. The second set 22 (the upper set), located directly above the first set 21, is used at maintenance height. Each set contains two hanging holes 20, with a horizontal spacing of 300mm (within the range of 200-400mm), and the two sets of hanging holes 20 are strictly aligned. To accommodate the installation height of the range hood, the distance between two adjacent sets of hanging holes in the vertical direction ranges from 50mm to 150mm.

[0032] To increase the strength of the area where the first hanging hole group 21 is located, especially at the outer periphery of the hanging holes 20, a first reinforcing profile 211 with annular protrusions (or shallow grooves) is stamped around the two hanging holes 20 of the first hanging hole group 21. In some embodiments, a U-shaped reinforcing plate 13 is welded to the front side of the upper extension plate 111, with its bottom open and covering the periphery of the first reinforcing profile 211. After engaging with the mounting bracket 3, the hook 31 acts simultaneously on the reinforcing plate 13 and the first reinforcing profile 211 of the hanging holes 20, preventing deformation or tearing. In a further embodiment, the inner edge of the U-shaped reinforcing plate 13 is folded forward 90° to form a reinforcing rib 131 (the width can be 5mm), which can significantly improve the bending stiffness. Similarly, a second reinforcing profile 221 with annular protrusions (or shallow grooves) is provided around the two hanging holes 20 of the second hanging hole group 22. The upper extension plate 111 has a long strip-shaped forming area 1111 extending in the left and right direction. The second hanging hole group 22 mentioned above is arranged on the forming area 1111 of the upper extension plate 111. In this way, the rigidity of the fan frame 1 can be improved by utilizing the forming area 1111 itself provided by the upper extension plate 111, eliminating the need for additional reinforcing parts and reducing costs.

[0033] like Figure 1 and Figure 2 As shown, the mounting bracket 3 is a horizontally extending strip bracket with two hooks 31 that are adapted to the corresponding hanging hole group. The hooks 31 are hook-shaped structures that extend forward and bend upward.

[0034] In some embodiments, the upper extension plate 111 has a forward-recessed concave profile 14 in the area between two adjacent hanging holes 20 of the first hanging hole group 21. This concave profile 14 has a first connecting hole 1112 for fasteners to pass through. Correspondingly, the mounting bracket 3 has a connecting flange 32 that extends forward or downward at an upward angle, and this connecting flange 32 also has a second connecting hole 320. After installation, the connecting flange 32 can fit against the corresponding sidewall of the concave profile 14, with the first connecting hole 1112 and the second connecting hole 320 facing each other. Fasteners (generally screws) pass through the first connecting hole 1112 and the second connecting hole 320 of the external mounting bracket 3 and are then connected to the wall. By fixing the fan frame 1, the mounting bracket 3, and the wall together with fasteners, the seismic resistance and resistance to external impacts can be significantly improved. The fasteners mentioned above can be screws. The screws can be used to fix the range hood fan frame 1, mounting bracket 3, and wall, further ensuring that the machine will not fall off and reminding the user that this is the normal height of the hanging hole 20. After maintenance, the hanging hole 20 needs to be raised back to this height.

[0035] The area where the second mounting hole group 22 is located on the upper extension plate 111 has a forward-recessed relief mold 15, which is basically the same in structure as the aforementioned forward-recessed mold 14. In the maintenance state, the connecting flange 32 on the mounting bracket 3 can extend into the relief mold 15 without interference.

[0036] The installation and maintenance procedure for the range hood in this embodiment is as follows:

[0037] Normal installation: The hook 31 of the external mounting bracket 3 is inserted into the first mounting hole group 21 (e.g., Figure 1 As shown), the fan frame 1 and mounting bracket 3 are fixed to the wall by screws passing through the first connecting hole 1112 of the upper extension plate 111 (located between the two hanging holes 20 of the first hanging hole group 21).

[0038] Maintenance mode: Remove the fixing screws → Gently lift the machine body upwards to disengage the hook 31 from the first hanging hole group 21 → Lower the entire machine body until the hook 31 aligns with the second hanging hole group 22 → After hooking in, the machine body will lower to a certain height. Figure 4 This creates stable maintenance workstations and improves maintenance efficiency.

[0039] When the range hood needs maintenance (such as cleaning the impeller, replacing the motor, or repairing the circuit), installers do not need to completely remove the entire unit from the mounting bracket 3. They simply need to detach the hook 31 from the currently used upper mounting hole group, and then move the entire unit downwards so that the hook 31 re-attaches into the lower mounting hole group. This lowers the overall position of the range hood, but its rear remains connected to the mounting bracket 3 via the hook 31, resulting in a relatively stable and lower "semi-disassembled" state. This provides ample and safe lower operating space for maintenance personnel, eliminating the need to risk operating on top of the machine or in narrow spaces close to the wall, and avoiding the need to completely move the heavy unit. This greatly simplifies the maintenance process and reduces operational difficulty and safety hazards. Maintenance only requires a simple "lowering and repositioning" operation, significantly reducing the steps and risks associated with complete disassembly and reinstallation (such as the unit falling or wiring being pulled). This not only improves maintenance efficiency but also reduces the possibility of damage to the machine or wall hook 31 due to frequent disassembly and reassembly. For both users and professional repair personnel, this significantly improves the convenience and safety of operation. Furthermore, during initial installation, multiple mounting hole sets offer options for different installation heights. Installers can flexibly choose the most suitable mounting hole set based on the actual site conditions, such as the height of the kitchen cabinets, the user's height, and the location of the flue connection. This allows the range hood to better adapt to different kitchen environments, optimizing smoke extraction performance and the user experience.

[0040] In this embodiment, "pressing" can refer to the concave-convex reinforcing structure (such as ribs or grooves) formed on a metal sheet through processes such as stamping or rolling, used to improve local rigidity. For example, it can be an annular boss or shallow groove structure around the hanging hole 20.

[0041] It is understandable that the maintenance height second hanging hole 20 in this embodiment can also be used as the normal height hanging hole 20 according to user needs, provided that the machine is lightweight.

Claims

1. A range hood, comprising: The fan frame (1) includes a fan frame body (10) and an air outlet plate (12) located at the top of the fan frame body (10). The fan frame body (10) includes a back plate (11) located at the rear side. The back plate (11) has an upper extension plate (111) extending upward relative to the air outlet plate (12). The feature is that: the upper extension plate (111) of the back plate (11) is provided with a set of hanging holes for hanging and installing with an external mounting bracket (3), and the set of hanging holes has at least two arranged sequentially in the vertical direction.

2. The range hood according to claim 1, characterized in that: Each of the aforementioned hanging hole groups includes at least two hanging holes (20) arranged sequentially in the horizontal direction.

3. The range hood according to claim 2, characterized in that: The lowest hanging hole group among all the hanging hole groups is called the first hanging hole group (21), which is used in the normal operation state of the range hood; the remaining hanging hole groups are called the second hanging hole group (22), which are used in the maintenance state.

4. The range hood according to claim 3, characterized in that: The front side of the upper extension plate (111) is also provided with a reinforcing plate (13) located around the hanging hole (20) of the first hanging hole group (21).

5. The range hood according to claim 4, characterized in that: The reinforcing plate (13) is a U-shaped plate with an open bottom.

6. The range hood according to claim 5, characterized in that: The inner edge of the reinforcing plate (13) also has a forward-folding reinforcing rib (131).

7. The range hood according to claim 4, characterized in that: The first hanging hole group (21) has a first reinforcing pressure type (211) at the outer periphery of the hanging hole (20), and the reinforcing plate (13) is located on the periphery of the first reinforcing pressure type (211).

8. The range hood according to claim 3, characterized in that: The second hanging hole group (22) has a second reinforcing pressure type (221) at the outer periphery of the hanging hole (20).

9. The range hood according to claim 2, characterized in that: The distance between two adjacent hanging holes (20) in the left-right direction in each of the hanging hole groups is in the range of [200mm, 400mm], and the corresponding hanging holes (20) in each of the hanging hole groups are aligned in the up-down direction.

10. The range hood according to claim 9, characterized in that: The distance between two adjacent hanging hole groups in the vertical direction in each of the aforementioned hanging hole groups ranges from 50mm to 150mm.

11. The range hood according to claim 4, characterized in that: The upper extension plate (111) has a forming area (1111) extending in the left and right direction, and the second hanging hole group is arranged on the forming area (1111) of the upper extension plate (111).

12. The range hood according to claim 4, characterized in that: The upper extension plate (111) has a first connecting hole (1112) for fasteners to pass through in the area between two adjacent hanging holes (20) of the first hanging hole group (21). The fasteners pass through the first connecting hole (1112) and the external mounting bracket (3) and are then connected to the wall.

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