Range hood

Abstract

The present invention discloses a range hood, which belongs to the field of household appliance technology and is designed to solve problems such as the difficulty in disassembling and assembling components in existing power systems. The range hood provided by the present invention includes a power system for generating negative pressure, and an inspection port and an inspection cover detachably connected to the inspection port are provided below the power system, and the inspection port is configured to allow components in the power system to enter and exit. The range hood provided by the present invention can be entered and exited through the inspection port when components in the power system need to be inspected and maintained, without the need to disassemble the entire power system, and is more convenient to use. After disassembly and assembly are completed, the inspection cover is fixed to the inspection port using bolts and other connectors, and the inspection port can be closed without affecting the normal use of the power system and with low noise.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, in particular to a range hood. Background Art

[0002] Range hoods utilize the principle of negative pressure to collect cooking fumes indoors at a designated location, where they can then be exhausted outdoors or purified. The primary devices that generate negative pressure are fans and motors. The motor rotates the fan, generating airflow that allows the fumes to move with it.

[0003] The motor produces noticeable noise when in operation, which can be detrimental to the user experience. To address this issue, some existing range hoods have their power systems installed inside the ceiling, using the ceiling to isolate some of the noise. The power system is connected to the smoke collection unit via a pipe, with the opening of the smoke collection unit generally aligned with the stovetop. Cooking fumes enter the pipe through the smoke collection opening and then reach the power system through the pipe, where they are collected.

[0004] The defects of this range hood include: the power system is located in the ceiling. When the fan, motor and other structures fail, it is necessary to open and remove part of the ceiling, open the outer casing, and then remove the faulty parts. The workload is large, the disassembly and assembly actions are tedious and complicated, and the disassembly and assembly are difficult. If disassembly and assembly are carried out with great force, the connection structure between the range hood and the wall may easily loosen, and there is a risk of the range hood falling off. Summary of the Invention

[0005] The purpose of the present invention is to provide a range hood that solves the problem of difficult assembly and disassembly of components in a power system and facilitates repair and maintenance.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The range hood includes a power system for generating negative pressure. An inspection port and an inspection cover detachably connected to the inspection port are provided below the power system. The inspection port is configured to allow components in the power system to enter and exit.

[0008] In one preferred embodiment, the range hood further includes a pipe system for oil smoke to pass through, the power system includes a chassis, the pipe system is connected to the chassis, and an inspection port is provided on the pipe system.

[0009] In one of the preferred embodiments, the piping system includes a guide assembly connected to the chassis, the guide assembly includes a tray and a guide angle located below the chassis, the tray and the guide angle are respectively tilted downward from the front to the back of the range hood, the inclination angle of the guide angle is greater than the inclination angle of the tray, and a part of the inspection port is set on the tray and the other part is set on the guide angle.

[0010] In one preferred embodiment, the space within the piping system is capable of accommodating an inspection cover.

[0011] In one preferred embodiment, a hook assembly is provided on the inspection cover, the hook assembly includes a hook, and a hanging ring is provided inside the pipeline system. After the inspection cover enters the pipeline system, the hook is buckled on the hanging ring.

[0012] In one preferred embodiment, the hook assembly further comprises a hinge base fixed on the inspection cover, the hook is hinged to the hinge base, and the hook can rotate around the hinge axis.

[0013] In one preferred embodiment, the range hood further comprises a smoke collection system, which is connected to the bottom end of the pipe system, and the oil smoke enters the pipe system through a smoke collection port on the smoke collection system.

[0014] In one preferred embodiment, the inspection cover covers the inspection opening from the inside.

[0015] In one of the preferred embodiments, a pressing block is provided on the inspection cover, and a connecting rope is provided in the power system, one end of the connecting rope is fixed in the power system, and the other end of the connecting rope is tied to the pressing block.

[0016] In one preferred embodiment, the power system further includes a retaining ring, an impeller and a motor, and the inspection port is configured to allow the retaining ring, the impeller and the motor to enter and exit.

[0017] The range hood provided by the present invention has an inspection hatch below the power system. This hatch allows access for inspection and maintenance of components within the power system without disassembling the entire system, making it more convenient. After disassembly, the hatch can be closed by securing the inspection cover to the hatch using bolts or other fasteners. This ensures normal operation of the power system and reduces noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural schematic diagram of a range hood provided by a specific embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the internal structure of a range hood provided by a specific embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the combined structure of a chassis and a flow guide assembly provided in a specific embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the combined structure of the guide assembly and the inspection cover provided in a specific embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of the installation structure of the power system provided by a specific embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure after the inspection cover provided by a specific embodiment of the present invention is removed;

[0024] Figure 7 It is a structural diagram of a hook assembly provided in a specific embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the state of the inspection cover plate being suspended by the connecting rope provided in a specific embodiment of the present invention;

[0026] Figure 9 It is a structural schematic diagram of a connecting rope and an inspection cover provided in a specific embodiment of the present invention;

[0027] Figure 10 yes Figure 9 A partial enlarged view of point A in the middle;

[0028] Figure 11 It is a structural schematic diagram of a compression block provided by a specific embodiment of the present invention;

[0029] Figure 12 is a cross-sectional view of a compression block provided in a specific embodiment of the present invention;

[0030] Figure 13 It is a structural schematic diagram of the connecting rope, the pressing block and the inspection cover provided by a specific embodiment of the present invention;

[0031] Figure 14 This is a schematic diagram of the state of the inspection cover provided by a specific embodiment of the present invention when it is buckled;

[0032] Figure 15 This is an exploded schematic diagram of the steps for disassembling the access cover provided in a specific embodiment of the present invention;

[0033] Figures 16 to 21 They are respectively schematic diagrams of the steps of disassembling the retaining ring, the impeller and the motor provided in the specific embodiments of the present invention.

[0034] In the picture:

[0035] 1. Power system; 2. Piping system; 3. Smoke collection system; 4. Ceiling; 5. Cabinet door panel; 6. Wall; 7. Ceiling inspection port; 11. Chassis; 12. Volute; 13. Retaining ring; 14. Impeller; 15. Motor; 21. Diversion assembly; 22. Telescopic assembly; 23. Connection assembly; 24. Hanging ring; 31. Smoke collection port; 111. Connecting rope; 211. Tray; 212. Diversion cutaway; 213. Inspection port; 214. Inspection cover; 215. Hook assembly; 216. Hook; 217. Hinge base; 218. Articulated shaft; 219. Clamping block. DETAILED DESCRIPTION

[0036] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0039] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0042] This embodiment discloses a range hood, such as Figure 1 and Figure 2 As shown, the range hood includes, from top to bottom, a power system 1, a piping system 2, and a smoke collection system 3. The power system 1 generates negative pressure, the piping system 2 allows fumes to pass through, and the smoke collection system 3 is provided with a smoke collection port 31, which faces the stove. The power system 1 is placed in the ceiling, and the smoke collection system 3 is located under the cabinet. Along the airflow direction, the outlet of the smoke collection system 3 is connected to the inlet of the power system 1 via the piping system 2.

[0043] The power system 1 includes a chassis 11, a volute 12, a retaining ring 13, an impeller 14, and a motor 15. Impeller 14 is connected to the output shaft of motor 15. Impeller 14 and motor 15 are co-located within volute 12, on a side away from the air inlet. Retaining ring 13 is removably mounted on the air inlet of volute 12. The volute 12, retaining ring 13, impeller 14, and motor 15 are collectively located within chassis 11, near the top. Motor 15 drives impeller 14 to rotate, creating a negative pressure within chassis 11. Fumes enter piping system 2 through smoke collection port 31 on smoke collection system 3.

[0044] A detachably connected inspection port 213 and an inspection cover 214 are provided at the bottom of the power system 1. The inspection port 213 is configured to allow the components in the power system 1 to enter and exit. When it is necessary to inspect and maintain the impeller 14, the motor 15 and other devices, the inspection cover 214 can be removed from the inspection port 213, and the retaining ring 13, the impeller 14 and the motor 15 can be taken out from the inspection port 213. After the inspection and maintenance is completed, the components in the power system 1 can be put back into the chassis 11 through the inspection port 213. There is no need to disassemble the entire power system 1, which is more convenient to use. After disassembly and assembly are completed, the inspection cover 214 can be fixed to the inspection port 213 using bolts or other connecting parts to close the inspection port 213. This does not affect the normal use of the power system 1 and reduces noise.

[0045] The inspection port 213 is arranged below the power system 1 so that the motor 15 and other devices can be easily disassembled and assembled. In this embodiment, the inspection port 213 is arranged on the pipeline system 2. Figures 2 to 4 As shown, the piping system 2 includes a flow guide assembly 21, a telescoping assembly 22, and a connecting assembly 23, connected sequentially from top to bottom. The flow guide assembly 21 is connected to the chassis 11, and the connecting assembly 23 is connected to the smoke collection system 3. The flow guide assembly 21 includes a tray 211 located below the chassis 11 and a flow guide cutout 212. An access port 213 is partially provided on the tray 211 and the other portion is provided on the flow guide cutout 212.

[0046] like Figure 5 As shown, the tray 211 is located on the upper side of the ceiling 4, and the diversion angle 212 is located on the inner side of the cabinet door panel 5. The tray 211 is connected to the air inlet of the chassis 11 of the power system 1, and the diversion angle 212 is connected and turned with the tray 211. The tray 211 is located on the side away from the wall 6 and the diversion angle 212 is located on the side close to the wall 6. The wall 6 here is the wall 6 for hanging the smoke collection system 3. A ceiling inspection port 7 is provided on the ceiling 4. The ceiling inspection port 7 is close to the cabinet door panel 5 and is located below the power system 1. When disassembling, the ceiling inspection port 7 and the cabinet door panel 5 are opened to expose the inspection port 213. After removing the inspection cover 214, the components in the power system 1 can be easily disassembled.

[0047] From the front to the back of the range hood (from the cabinet door panel 5 to the wall 6), the tray 211 and the guide cut corner 212 are respectively tilted downward to facilitate the oil droplets to flow downward. Figure 5 As shown, the inclination angle β of the guide cut corner 212 is greater than the inclination angle α of the tray 211. The inclination angle β is preferably between 15° and 65°, providing sufficient turning space for the airflow, reducing flow resistance, improving the ability to extract oil fumes, and achieving faster extraction speed and a better user experience. The dimensions of the guide cut corner 212 and the tray 211 are not specifically limited. The guide cut corner 212 can be covered by the cabinet door panel 5 to ensure a clean and beautiful kitchen space.

[0048] In order to reduce the risk of oil leakage from the connection between the inspection cover 214 and the inspection opening 213, and to prevent the inspection cover 214 from interfering with the cabinet door panel 5 (and the ceiling 4), the inspection cover 214 covers the inspection opening 213 from the inside. That is, the inspection cover 214 is arranged on the inside of the guide assembly 21, and the connection between the inspection cover 214 and the inspection opening 213 is located below the inspection cover 214. Oil droplets dripping from the volute 12, retaining ring 13, impeller 14 and motor 15 will fall on the top surface of the inspection cover 214 and outside the inspection cover 214, and will not seep between the inspection cover 214 and the inspection opening 213.

[0049] When disassembling or assembling, it is necessary to push the inspection cover 214 inwards towards the power system 1. Figure 6 As shown, the space inside the piping system 2 can accommodate the inspection cover 214. After being pushed inward, the inspection cover 214 is moved obliquely downward until the inspection cover 214 completely enters the piping system 2. At this time, the inspection port 213 is completely opened, leaving enough space for disassembling and assembling components in the power system 1.

[0050] In order to prevent the inspection cover 214 from entering the pipeline system 2 too deeply, a hook assembly 215 is provided on the inspection cover 214, and a hanging ring 24 is provided inside the pipeline system 2. After the inspection cover 214 enters the pipeline system 2, the hook assembly 215 cooperates with the hanging ring 24 to limit the inspection cover 214 and prevent the inspection cover 214 from falling off.

[0051] like Figure 7 As shown, the hook assembly 215 includes a hook 216 and a hinge base 217. The hook 216 is hinged to the hinge base 217. The hook 216 can rotate around the hinge axis 218 to avoid interference with other structures in the range hood except the hanging ring 24. The hinge base 217 is fixed to the inspection cover 214 (such as Figure 6 As shown), the inspection cover 214 enters the pipeline system 2 (as shown Figure 1 After the hook 216 is buckled on the hanging ring 24 (as shown), Figure 6 As shown) Figure 6 As shown, it is ensured that the maintenance cover 214 stays at the set position, which facilitates the subsequent resetting of the maintenance cover 214.

[0052] The specific location of the hook assembly 215 on the inspection cover 214 is not limited, and the specific location of the hanging ring 24 within the piping system 2 is also not limited. It only needs to cooperate with the hanging ring 24 to limit the position of the inspection cover 214 within the piping system 2. In this embodiment, the hook assembly 215 is set on the end of the inspection cover 214 away from the wall 6, and the hook assembly 215 is located on the centerline, which makes the force more balanced; the hanging ring 24 is set on the side wall of the diversion assembly 21 away from the wall 6, and the hanging ring 24 is located below the diversion cut corner 212. While ensuring that the inspection port 213 is completely open, the inspection cover 214 is hung as high as possible, making it easy to remove the inspection cover 214 during subsequent installation.

[0053] In order to further prevent the inspection cover 214 from sliding too deeply into the pipeline system 2, as shown in FIG. Figures 8 to 14 As shown, a clamping block 219 is provided on the inspection cover 214, and a connecting rope 111 is provided in the power system 1. One end of the connecting rope 111 is fixed in the power system 1, and the other end of the connecting rope 111 is tied to the clamping block 219. The specific structure of the clamping block 219 is not limited, as long as it can fix the end of the connecting rope 111. The connecting rope 111 is preferably made of a flexible material. When the inspection cover 214 covers the inspection port 213, the connecting rope 111 can be curled up and stored at a set position. The specific length of the connecting rope 111 is not limited, as long as the inspection cover 214 can be hung at a position that does not affect the disassembly and assembly of components in the power system 1.

[0054] A clamping block 219 is positioned on the end of the access cover 214 away from the wall 6. To ensure more balanced force distribution, two clamping blocks 219 are symmetrically positioned on the access cover 214. Accordingly, two connecting ropes 111 are secured to the wall surface of the chassis 11 away from the wall 6, each connected to a clamping block 219. The clamping blocks 219 are positioned at the edges of the access cover 214. When the access cover 214 enters the piping system 2, the two connecting ropes 111 are positioned on either side of the access opening 213, preventing the connecting ropes 111 from obstructing the access opening 213 and hindering the movement of components into and out of the access opening 213.

[0055] For greater convenience of use, a flexible rope recovery assembly (not shown) may be provided in the chassis 11 , which can store the connecting rope 111 . During the movement of the inspection cover 214 , the flexible rope recovery assembly can automatically release and reel in the connecting rope 111 .

[0056] When the components in the power system 1 need to be repaired and maintained, such as Figure 15 As shown in (a), remove the fastening screws on the inspection cover 214, push the inspection cover 214 inward, and make the inspection cover 214 leave the inspection port 213. Figure 15As shown in (b) and (c), continue to push and rotate the inspection cover 214 inwards to move the inspection cover 214 downwards in the guide assembly 21. Figure 15 As shown in (d), the inspection cover 214 continues to move downward, and the bottom end of the inspection cover 214 enters the telescopic assembly 22. Figure 15 As shown in (e), the hook assembly 215 is hooked on the hanging ring 24, completing the disassembly of the inspection cover 214 and opening the inspection port 213.

[0057] Figure 16 L in the middle indicates the width of the inspection port 213 in the horizontal direction. Since a portion of the inspection port 213 is located on the inclined guide cut corner 212, the maximum width that can actually be used for the inspection port 213 is located in the inclined direction, and the maximum width value is greater than L.

[0058] like Figure 16 As shown, remove the retaining ring 13 from the volute 12; Figure 17 As shown, the retaining ring 13 can be removed from the inspection port 213 by simply moving it downward and then horizontally. Figure 18 As shown, the impeller 14 is removed from the motor 15 and moved down to the inspection port 213; Figure 19 As shown, the impeller 14 is tilted at a certain angle; Figure 20 As shown, the impeller 14 is pulled out from the inspection port 213 in an obliquely downward direction. Figure 21 As shown, the motor 15 is disassembled and taken out from the inspection opening 213 .

[0059] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A range hood comprising a power system (1) for generating negative pressure, characterized in that: An inspection port (213) and an inspection cover (214) detachably connected to the inspection port (213) are provided below the power system (1), and the inspection port (213) is configured to allow components within the power system (1) to enter and exit; The range hood further comprises a pipe system (2) for oil smoke to pass through, the power system (1) comprises a chassis (11), the pipe system (2) is connected to the chassis (11), and the inspection port (213) is provided on the pipe system (2); The pipe system (2) comprises a flow guide assembly (21) connected to the chassis (11), the flow guide assembly (21) comprising a tray (211) and a flow guide cut corner (212) located below the chassis (11), the tray (211) and the flow guide cut corner (212) being arranged to be tilted downwards in a direction from the front to the back of the range hood, the flow guide cut corner (212) being connected and turned with the tray (211), the inclination angle of the flow guide cut corner (212) being greater than the inclination angle of the tray (211), and a portion of the inspection port (213) being arranged on the tray (211) and the other portion being arranged on the flow guide cut corner (212).

2. The range hood according to claim 1, characterized in that: The space within the pipeline system (2) can accommodate the inspection cover (214).

3. The range hood according to claim 2, characterized in that: The inspection cover (214) is provided with a hook assembly (215), the hook assembly (215) including a hook (216), and a hanging ring (24) is provided inside the pipeline system (2). After the inspection cover (214) enters the pipeline system (2), the hook (216) is buckled on the hanging ring (24).

4. The range hood according to claim 3, characterized in that: The hook assembly (215) further includes a hinge base (217) fixed on the inspection cover (214), the hook (216) is hinged to the hinge base (217), and the hook (216) can rotate around a hinge axis (218).

5. The range hood according to claim 1, characterized in that: The range hood further comprises a smoke collection system (3), wherein the smoke collection system (3) is connected to the bottom end of the pipe system (2), and oil smoke enters the pipe system (2) through a smoke collection port (31) on the smoke collection system (3).

6. The range hood according to any one of claims 1 to 5, characterized in that: The inspection cover (214) covers the inspection opening (213) from the inside.

7. The range hood according to any one of claims 1 to 5, characterized in that: A pressing block (219) is provided on the inspection cover (214), and a connecting rope (111) is provided in the power system (1). One end of the connecting rope (111) is fixed in the power system (1), and the other end of the connecting rope (111) is tied to the pressing block (219).

8. The range hood according to any one of claims 1 to 5, characterized in that: The power system (1) further comprises a retaining ring (13), an impeller (14) and a motor (15), and the inspection port (213) is configured to allow the retaining ring (13), the impeller (14) and the motor (15) to enter and exit.

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