Bidirectional fan blade of range hood

Abstract

The utility model discloses a range hood bi-directional fan blade, relates to the range hood technical field, including shell, the inside of shell is equidistantly fixed connection with mounting mechanism, the inside rear end of mounting mechanism is fixedly equipped with fixed mount, the back of fixed mount is fixedly equipped with drive motor. By the adoption of the structure, after the quickly-disassembled fan blades are disassembled from the interior of the shell, the adjusting handle is twisted to drive the rotating disc to rotate, the linkage rod is synchronously drawn to move, then the limiting plate is driven to move inwards, and when the limiting plate is stored in the movable groove, the sliding plate loses limiting, and the sliding plate can be drawn out to achieve quick disassembly and assembly of the fan blade body. The sliding plate is inserted into the mounting groove, the adjusting handle is loosened, and the limiting spring pushes the limiting plate to move outwards to shield the sliding plate for limiting, so that the bidirectional fan blades are convenient to quickly disassemble, assemble and separate and can be further disassembled, assembled and overhauled, the overall disassembly, assembly and overhaul convenience of the device is improved, and the functionality and usability of the device are enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of range hoods, in particular to a bidirectional fan blade for a range hood. Background Art

[0002] The bidirectional fan blades of the range hood are the key components for exhausting oil smoke. Its structural feature is that the fan blades are designed to be bidirectional. Unlike traditional unidirectional fan blades, the bidirectional fan blades can guide the airflow in two directions when working. From a functional point of view, when the range hood is turned on, the bidirectional fan blades will rotate rapidly. On the one hand, they can effectively absorb the oil smoke, heat and odor generated above the stove into the range hood; on the other hand, under certain specific air duct designs or working modes, it can help to discharge the inhaled oil smoke and other impurities more smoothly to the air outlet, discharge them to the outside or pass through purification devices such as filters for treatment. This two-way airflow guidance function makes the air circulation in the range hood more efficient, helps to improve the overall oil smoke extraction effect, reduce the residual oil smoke in the kitchen, and create a relatively fresh environment for the kitchen.

[0003] The Chinese patent with the announcement number "CN2596081Y" discloses a bidirectional fan blade for a range hood, which includes a shaft seat and two fan blade groups with the same structure fixed on the shaft seat. Each fan blade group includes a disc-shaped seat, an outer frame and a number of blades. The disc seat is provided with a groove for inserting the blade convex buckle. The circular outer periphery of the two disc seats is provided with equidistant surrounding bending sections. The bending sections bend and grab the other disc seat to form an integral connection. The outer frame is provided with a groove for inserting the convex buckle and grabbing each blade. The circular hollow of the two outer frames is for the oil smoke. At the suction port, the blades are arranged on the outer side of the disc-shaped seat, arranged in an equidistant oblique radial pattern and surrounding the axis of the seat body. Each blade has a convex buckle on both sides that is inserted into the disc-shaped seat groove. Each blade convex buckle is engaged with the disc-shaped seat and the outer frame to firmly connect the three. The shaft seat is provided with a hollow shaft hole and a flange on the outside. The front end of the shaft seat is provided in the shaft hole of the disc seat. The disc seat is riveted on the flange. The two blade groups are coaxially riveted together. Its structure is simple and reasonable, the overall structure is strong in rigidity, the connection strength is high, the service life is improved, and the use effect is ideal;

[0004] Although the above-mentioned device has demonstrated convenience to a certain extent during actual use, some problems have also been exposed during use. Among them, the fan blades of the device adopt an integrated design, which has obvious disadvantages in the overall application process. Since the fan is located inside the range hood, during long-term use, a large amount of impurities and oil stains are easily attached to the outer surface of the fan. In view of this, the fan needs to be cleaned and maintained during daily use. However, under the current design, when cleaning various parts of the fan blades, it is extremely inconvenient to disassemble and separate them, which makes inspection and cleaning work very difficult. It can be seen that the device does have certain defects and deficiencies in the overall use process. In order to improve the practicality and reliability of the device and ensure that it can better meet the needs of users, it is urgent to improve it. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a bidirectional fan blade for a range hood, so as to solve the problem that the fan of the existing range hood is inconvenient to disassemble, separate and clean during use.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A range hood bidirectional fan blade comprises a housing, a mounting mechanism fixedly connected at equal intervals inside the housing, a fixing bracket fixedly mounted on the inner rear end of the mounting mechanism, a drive motor fixedly mounted on the back of the fixing bracket, and a quick-release fan blade fixedly mounted on the front output end of the drive motor;

[0008] The quick-release fan blade includes a rotating shaft, which is fixedly installed on the front output end of the drive motor. The outer surface of the rotating shaft is provided with mounting grooves at equal intervals. A slide is slidably connected to the inner side of the mounting groove. The outer side of the slide is fixedly connected to the fan blade body. A limiting assembly is fixedly installed on the front end of the rotating shaft, and the outer end of the limiting assembly is arranged on the front side of each slide.

[0009] As an optimal technical solution, the limiting assembly includes a movable groove, which is arranged in a ring shape with equal intervals and opened at the front end of the rotating shaft. The inner ends of the movable grooves are fixedly connected to the limiting springs, and the outer ends of the limiting springs are fixedly connected to the limiting plates. The outer ends of the limiting plates pass through the movable grooves and the rotating shaft and are arranged at the front end of the skateboard. The front end of the skateboard and the outer end of the back side of the limiting plate are fit together.

[0010] As an optimal technical solution, the front end of the rotating shaft is rotatably connected to a turntable, and linkage rods are hinged at equal intervals on the outside of the turntable. The front ends of the limiting plates are rotatably connected to articulated wheels, and the articulated wheels and the outer ends of the linkage rods are hinged.

[0011] As a preferred technical solution, an adjustment handle is fixedly connected to the front of the turntable, and handrails are fixedly connected to the outside of the adjustment handle at equal intervals.

[0012] As a preferred technical solution, mounting brackets are fixedly mounted on both sides of the housing, a mounting hole is opened in the middle of the outer end of the mounting bracket, and the mounting hole is configured as a countersunk hole.

[0013] As an optimal technical solution, the mounting mechanism includes inner rails, which are arranged in a ring shape with equal intervals and fixedly connected to the inside of the outer shell. The inside of the inner rails is slidably connected to a mounting plate, and the fixing frame is fixedly mounted on the inner rear end of the mounting plate.

[0014] As an optimal technical solution, the inner front end of the mounting plate is threadedly connected to a limiting screw, the outer end of the limiting screw passes through the mounting plate, and the limiting screw is configured as a hand-tightening screw.

[0015] In summary, the present invention has the following beneficial effects:

[0016] First, the device is provided with an installation mechanism. When in use, the installation plate is inserted into the inner rail, and the installation plate can be installed in the shell by twisting the limit screw. The fixing frame provides support for the installation of the quick-release fan blades. When the quick-release fan blades need to be repaired, the limit screw is twisted to move it inward and out of the shell, and the quick-release fan blades can be removed. This makes the device as a whole easy to quickly disassemble, maintain and repair, greatly facilitates the use of the device, and brings efficient and convenient experience to users. The installation mechanism is easy to operate, provides a strong guarantee for the installation and removal of the quick-release fan blades in the shell, and improves the practicality and maintainability of the device.

[0017] Second, after the quick-release fan blades of this device are removed from the inside of the shell, twisting the adjustment handle can drive the turntable to rotate, and synchronously pulling the linkage rod to move, thereby driving the limit plate to move inward. When the limit plate is retracted into the movable slot, the slide plate loses its limit, and the slide plate can be pulled out to achieve quick disassembly of the fan blade body. During installation, insert the slide plate into the installation slot, loosen the adjustment handle, and the limit spring pushes the limit plate outward to block the slide plate for limiting. This design makes the two-way fan blades easy to quickly disassemble and separate, and can be further disassembled and repaired, which improves the convenience of the overall disassembly and maintenance of the device and enhances the functionality and ease of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the quick-detachable fan blade and the housing in the separated state of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the quick-detachable fan blade of the utility model;

[0021] Figure 4 This utility model Figure 3 A schematic diagram of the enlarged structure.

[0022] Figure numerals: 1. outer shell; 2. mounting mechanism; 21. inner rail; 22. mounting plate; 23. limiting screw; 3. fixing bracket; 4. driving motor; 5. quick-release fan blade; 51. rotating shaft; 52. mounting slot; 53. slide plate; 54. fan blade body; 55. limiting assembly; 551. movable slot; 552. limiting spring; 553. limiting plate; 554. turntable; 555. linkage rod; 556. articulated wheel; 557. adjusting handle; 558. handrail; 6. mounting bracket; 7. mounting hole. DETAILED DESCRIPTION

[0023] Example

[0024] refer to Figures 1 to 4 The bidirectional fan blade of the range hood of this embodiment includes a housing 1, a mounting mechanism 2 is fixedly connected to the inside of the housing 1 at equal intervals, a fixing bracket 3 is fixedly mounted on the inner rear end of the mounting mechanism 2, a driving motor 4 is fixedly mounted on the back of the fixing bracket 3, and a quick-release fan blade 5 is fixedly mounted on the front output end of the driving motor 4;

[0025] The quick-release fan blade 5 includes a rotating shaft 51, which is fixedly mounted on the front output end of the drive motor 4. The outer surface of the rotating shaft 51 is provided with mounting grooves 52 at equal intervals. The inner side of the mounting groove 52 is slidably connected with a slide plate 53. The outer side of the slide plate 53 is fixedly connected with the fan blade body 54. The front end of the rotating shaft 51 is fixedly mounted with a limit assembly 55. The outer end of the limit assembly 55 is set on the front side of each slide plate 53. The mounting mechanism 2 is evenly spaced inside the shell 1, which makes it easy to quickly install the entire device inside the range hood. At the same time, it can also be easily disassembled when maintenance is required. The combination of the fixing frame 3 and the drive motor 4 ensures The power of the fan blades is stable and reliable, and the design of the quick-release fan blades 5 is particularly ingenious. The mounting groove 52 on the rotating shaft 51 is slidably connected to the slide plate 53, so that the fan blade body 54 can be easily installed and disassembled. This design greatly facilitates daily cleaning and maintenance. When impurities such as oil are attached to the outer surface of the fan blades, the fan blade body 54 can be quickly removed for cleaning. The front-end limit assembly 55 can effectively fix the position of the slide plate 53 to ensure the stability of the fan blades during operation. Overall, the bidirectional fan blade design is reasonable, which not only ensures the normal operation of the range hood, but also improves the convenience of maintenance.

[0026] refer to Figure 3-Figure 4The limiting assembly 55 includes a movable groove 551, which is arranged in a ring shape with equal intervals and is opened at the front end of the rotating shaft 51. The inner ends of the movable grooves 551 are fixedly connected to the limiting springs 552, and the outer ends of the limiting springs 552 are fixedly connected to the limiting plates 553. The outer ends of the limiting plates 553 pass through the movable grooves 551 and the rotating shaft 51 and are arranged at the front end of the slide plate 53. The front end of the slide plate 53 and the outer ends of the back sides of the limiting plates 553 are fitted and connected. The front end of the rotating shaft 51 is rotatably connected to a turntable 554, and the outer side of the turntable 554 is hinged with linkage rods 555 at equal intervals. The front ends of the limiting plates 553 are rotatably connected to articulated wheels 556, and the outer ends of the articulated wheels 556 and the linkage rods 555 are hinged. The movable grooves 551 are arranged in a ring shape and are opened at the front end of the rotating shaft 51. The limiting springs 552 are fixedly connected to the limiting plates 553. The outer ends of the limiting plates 553 pass through the movable grooves 551 and the rotating shaft 51 and are arranged at the front end of the slide plate 53. The front end of the slide plate 53 and the outer ends of the back sides of the limiting plates 553 are fitted and connected. The limit plate 553 provides installation space, and the limit spring 552 can push the limit plate 553 outward under normal circumstances, so that the outer end of the limit plate 553 fits against the front end of the slide plate 53, which effectively limits the slide plate 53 and ensures that the slide plate 53 is firmly installed on the rotating shaft 51, thereby ensuring that the fan blade body 54 will not loosen or shift during operation. When the fan blade body 54 needs to be disassembled, the turntable 554 is rotated, and the linkage rod 555 on the outside of the turntable 554 drives the articulated wheel 556, and then the limit plate 553 is pulled inward, so that the limit plate 553 is completely retracted into the movable groove 551. At this time, the slide plate 53 loses its limit and can be easily pulled out for cleaning or maintenance. This design is easy to operate and can quickly realize the disassembly and assembly of the fan blades, greatly improving the efficiency and convenience of maintenance.

[0027] refer to Figure 4 The front of the turntable 554 is fixedly connected with an adjustment handle 557, and the outside of the adjustment handle 557 is fixedly connected with an armrest rod 558 at equal intervals. Mounting brackets 6 are fixedly installed on both sides of the shell 1, and a mounting hole 7 is opened in the middle of the outer end of the mounting bracket 6. The mounting hole 7 is set as a countersunk hole, and the adjustment handle 557 on the front of the turntable 554 is convenient for user operation. The fan blades can be quickly disassembled and assembled by rotating the adjustment handle 557. The armrest rods 558 fixed at equal intervals on the outside of the adjustment handle 557 further enhance the convenience and comfort of operation, and the user can better apply force when rotating the adjustment handle 557. The mounting brackets 6 on both sides of the shell 1 provide a stable installation position for the entire device, and the mounting holes 7 in the form of countersunk holes opened in the middle of the outer end of the mounting bracket 6 are not only convenient for installation and fixation, but also make the installed device more beautiful and reduce the risk of collision caused by protruding parts. The overall design takes into account both functional requirements and focuses on the convenience of user operation and the stability of device installation.

[0028] refer to Figure 1-Figure 3The mounting mechanism 2 includes an inner rail 21, which is arranged in a ring shape with equal spacing and fixedly connected to the inside of the shell 1. The inner rail 21 is slidably connected to the mounting plate 22. The fixing frame 3 is fixedly mounted on the inner rear end of the mounting plate 22. The inner front end of the mounting plate 22 is threadedly connected to the limiting screw 23. The outer end of the limiting screw 23 passes through the mounting plate 22. The limiting screw 23 is set as a hand-tightening screw. The inner rails 21 are arranged in a ring shape with equal spacing and fixed to the inside of the shell 1, providing a stable sliding track for the mounting plate 22. The sliding connection between the mounting plate 22 and the inner rail 21 makes the installation and removal process smoother and more convenient. The fixing bracket 3 is fixed to the rear end of the inner side of the mounting plate 22, ensuring the secure installation of the drive motor 4 and the quick-release fan blade 5. The limiting screw 23 at the front end of the inner side of the mounting plate 22, especially the design of the hand-tightening screw, is convenient for users to operate quickly without the aid of tools. When the quick-release fan blade 5 needs to be installed, the mounting plate 22 is inserted into the inner rail 21, and a secure installation can be achieved by twisting the limiting screw 23; when maintenance or cleaning is required, the entire quick-release fan blade 5 can be easily removed from the inside of the outer casing 1 by twisting the limiting screw 23 in the opposite direction, which greatly improves the maintainability and ease of use of the device.

[0029] Principle and advantages of use: By setting the mounting mechanism 2, the device can be used in use by inserting the mounting plate 22 into the interior of the inner rail 21, and then only twisting the limiting screw 23 to firmly install the mounting plate 22 inside the shell 1, and the fixing frame 3 is fixed to the inner rear end of the mounting plate 22. The limiting screw 23 not only assists in limiting the installation of the mounting plate 22, but also provides a strong support for the installation of the quick-release fan blade 5 inside the shell 1. When the quick-release fan blade 5 needs to be disassembled and repaired, the operation is extremely simple. Only the limiting screw 23 needs to be twisted to move it inward. When the end of the limiting screw 23 is separated from the shell 1, the entire quick-release fan blade 5 can be easily removed from the inside of the shell 1. In this way, the device as a whole is easy to quickly disassemble, maintain and repair, which greatly facilitates the use of the device and brings an efficient and convenient experience to the user.

[0030] By setting the quick-release fan blade 5, when the quick-release fan blade 5 is removed from the inside of the shell 1 during use, the turntable 554 can be driven to rotate by twisting the adjusting handle 557. When the turntable 554 rotates, the various linkage rods 555 can be pulled to move synchronously. After the linkage rods 555 are moved, the articulated wheels 556 can be pulled to drive the limit plates 553 to move inward. When the limit plates 553 are completely received into the inside of the movable groove 551, the various slides 53 in the installation groove 52 lose the limit of the limit plates 553. In this case, the slide plates 53 inside the installation groove 52 can be pulled out. Since the various fan blade bodies 54 are installed on the outside of the slide plates 53, the slide plates 53 can be pulled out by the slide plates 53. The fan blade body 54 can be quickly disassembled by pulling it out. If it needs to be installed, just reinsert the slide plate 53 into the inside of the installation slot 52. At this time, release the adjusting handle 557, and reset it through the limit spring 552 inside the movable slot 551. Then, the limit plate 553 can be pushed outward by the limit spring 552. At this time, the limit plate 553 moves outward to block the front side of the slide plate 53, so that the slide plate 53 can assist in limiting. The slide plate 53 is limited and installed on the inner side of the installation slot 52. At this time, the fan blade body 54 can be installed. This design makes the bidirectional fan blade not only easy to disassemble and separate quickly, but also can be further disassembled and repaired, which can improve the convenience of the overall disassembly and maintenance of the device.

Claims

1. A bidirectional fan blade for a range hood, comprising a housing (1), characterized in that: The interior of the housing (1) is fixedly connected with mounting mechanisms (2) at equal intervals, a fixing frame (3) is fixedly mounted on the inner rear end of the mounting mechanism (2), a driving motor (4) is fixedly mounted on the back of the fixing frame (3), and a quick-release fan blade (5) is fixedly mounted on the front output end of the driving motor (4); The quick-detachable fan blade (5) comprises a rotating shaft (51), the rotating shaft (51) is fixedly mounted on the front output end of the driving motor (4), the outer surface of the rotating shaft (51) is provided with mounting grooves (52) at equal intervals, the inner side of the mounting groove (52) is slidably connected to a slide plate (53), the outer side of the slide plate (53) is fixedly connected to the fan blade body (54), the front end of the rotating shaft (51) is fixedly mounted with a limiting assembly (55), the outer end of the limiting assembly (55) is arranged on the front side of each slide plate (53).

2. The bidirectional fan blade for a range hood according to claim 1, characterized in that: The limiting assembly (55) comprises a movable groove (551), the movable grooves (551) are arranged in a ring shape at equal intervals and are opened at the front end of the rotating shaft (51), the inner ends of the movable grooves (551) are fixedly connected to the limiting springs (552), the outer ends of the limiting springs (552) are fixedly connected to the limiting plate (553), the outer end of the limiting plate (553) passes through the movable groove (551) and the rotating shaft (51) and is arranged at the front end of the slide plate (53), and the front end of the slide plate (53) and the outer end of the back side of the limiting plate (553) are in close contact with each other.

3. The bidirectional fan blade for a range hood according to claim 2, characterized in that: The front end of the rotating shaft (51) is rotatably connected to a rotating disk (554), and linkage rods (555) are hingedly connected to the outer side of the rotating disk (554) at equal intervals. The front ends of the limiting plates (553) are rotatably connected to articulated wheels (556), and the articulated wheels (556) are hinged to the outer ends of the linkage rods (555).

4. The bidirectional fan blade for a range hood according to claim 3, characterized in that: An adjustment handle (557) is fixedly connected to the front of the turntable (554), and handrails (558) are fixedly connected to the outside of the adjustment handle (557) at equal intervals.

5. The bidirectional fan blade for a range hood according to claim 1, characterized in that: Mounting frames (6) are fixedly mounted on both sides of the housing (1), and a mounting hole (7) is provided in the middle of the outer end of the mounting frame (6), and the mounting hole (7) is configured as a countersunk hole.

6. The bidirectional fan blade for a range hood according to claim 1, characterized in that: The mounting mechanism (2) comprises inner rails (21), the inner rails (21) being arranged in a ring shape at equal intervals and fixedly connected to the interior of the outer shell (1), a mounting plate (22) being slidably connected to the interior of the inner rails (21), and the fixing frame (3) being fixedly mounted to the inner rear end of the mounting plate (22).

7. The bidirectional fan blade for a range hood according to claim 6, characterized in that: The inner front end of the mounting plate (22) is threadedly connected to a limiting screw (23), the outer end of the limiting screw (23) passes through the mounting plate (22), and the limiting screw (23) is configured as a hand-tightening screw.

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