Air outlet adjusting structure and range hood

Abstract

The utility model discloses an air outlet adjusting structure and a range hood, the air outlet adjusting structure is connected above an air outlet seat of the range hood, and the air outlet adjusting structure comprises a connecting pipe, a blade assembly and a driving assembly; the connecting pipe is a hollow pipeline; the blade assembly is arranged in the hollow pipeline and comprises a plurality of blades, and the blades are stacked and define a smoke exhaust channel matched with the inner diameter of the connecting pipe; the driving assembly is used for driving the blade assembly, so that the upper ends of the blades get close to one another and the outlet of the smoke exhaust channel is shrunk. According to the air outlet adjusting structure, the size of the outlet of the smoke exhaust channel can be adjusted according to the oil smoke amount, the smoke exhaust requirements in different cooking environments can be met, and the using effect of the range hood is improved.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically to an air outlet adjustment structure and a range hood. Background Technology

[0002] A range hood, also known as a kitchen exhaust hood, is a kitchen appliance used to absorb and remove fumes, steam, smoke, and odors produced during cooking. It is primarily installed above the stovetop and effectively reduces kitchen smoke pollution, keeping the air fresh and protecting the health of the cook. In existing range hoods, the fumes in the air collection chamber are discharged through the vent connector into the external exhaust duct, and finally discharged outdoors. However, in current technology, the inner diameter of the vent connector is not adjustable, preventing the range hood from effectively controlling its exhaust speed and noise level based on the amount of fumes, thus reducing its overall performance. Utility Model Content

[0003] The purpose of this utility model is to provide an air outlet adjustment structure to solve the above-mentioned technical problems.

[0004] The air outlet adjustment structure proposed in this utility model is connected above the air outlet seat of the range hood, and includes a connecting pipe, a blade assembly and a drive assembly; the connecting pipe is a hollow pipe; the blade assembly is located inside the hollow pipe and includes several blades, which are stacked on each other and form a smoke exhaust channel that is adapted to the inner diameter of the connecting pipe; the drive assembly is used to drive the blade assembly so that the upper ends of the several blades move closer to each other and reduce the outlet of the smoke exhaust channel.

[0005] According to one embodiment of the present invention, the lower ends of several blades are connected to the inner wall of the connecting pipe, and the driving component applies force to the upper ends of the several blades to reduce the outlet of the smoke exhaust channel.

[0006] According to one embodiment of the present invention, the drive assembly includes a drive motor, a gear, a gear ring, a first retractable rope, and a second retractable rope. A guide ring is connected to the inner wall of the connecting tube, and the gear ring is slidably connected to the guide ring. The drive motor is mounted on the connecting tube, and its drive end is connected to the gear, which meshes with the gear ring. Each blade has a connecting block at its upper end. The first retractable rope passes through the connecting block on one part of the blades, and the second retractable rope passes through the connecting block on another part of the blades. The first ends of the first and second retractable ropes are close to each other. The first end of the first retractable rope is connected to the gear ring, and the first end of the second retractable rope is connected to the connecting tube. The second ends of the first and second retractable ropes are close to each other. The second end of the first retractable rope is connected to the connecting tube, and the second end of the second retractable rope is connected to the gear ring.

[0007] According to one embodiment of the present invention, the inner wall surface of the connecting tube is provided with a first connecting seat connected to the second end of the first contraction rope and a second connecting seat connected to the first end of the second contraction rope, and the first connecting seat and the second connecting seat are symmetrically arranged.

[0008] According to one embodiment of the present invention, a drive motor is connected to the outside of the connecting pipe, and its drive end extends into the connecting pipe to connect with the gear, causing the gear to drive the gear ring to rotate along the guide ring.

[0009] According to one embodiment of the present invention, both the guide ring and the gear ring are provided with notches.

[0010] According to one embodiment of the present invention, a flow guide sleeve is also provided inside the connecting pipe, and the lower ends of several blades are connected to the flow guide sleeve.

[0011] According to one embodiment of the present invention, the inner cylinder of the guide sleeve is conical, and the inner diameter gradually decreases from bottom to top.

[0012] According to one embodiment of the present invention, a fixing seat is provided on the upper end surface of the flow guide sleeve, a fixing block is provided on the outer side wall of the blade, the fixing block is connected to the fixing seat, and the lower end of the blade extends into the flow guide sleeve.

[0013] This utility model also proposes a range hood, which adopts the air outlet adjustment structure described above, including a range hood body, an air outlet on the top of the air collection box of the range hood body, an air outlet seat connected to the air outlet, and a connecting pipe connected to and communicating with the air outlet seat.

[0014] Compared with the prior art, the air outlet adjustment structure of this utility model has the following advantages:

[0015] This utility model's outlet adjustment structure connects the range hood's outlet to the kitchen's exhaust duct via a connecting pipe. This allows the fumes drawn in by the range hood to flow through the outlet adjustment structure to the exhaust duct, and then through the exhaust duct to the outside. The drive assembly can move the upper ends of several blades closer together to narrow the exhaust duct outlet; conversely, the drive assembly can also move the upper ends of the blades away from each other to widen the exhaust duct outlet. This allows for adjustment of the exhaust duct outlet size. When the range hood's intake outlet size remains constant, adjusting the exhaust duct outlet size allows for reasonable control of the range hood's exhaust efficiency and noise level.

[0016] When cooking produces a large amount of fumes, the outlet of the exhaust duct can be narrowed. This increases the airflow velocity from the intake to the exhaust outlet, thereby improving the efficiency of fume extraction. When cooking produces a small amount of fumes, the outlet of the exhaust duct can be widened. This reduces the airflow velocity within the range hood, decreasing noise and improving the user experience. Therefore, adjusting the size of the exhaust duct outlet according to the amount of fumes can meet the fume extraction needs of different cooking environments, thus improving the performance of the range hood. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the air outlet adjustment structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the outlet reduction state of the air outlet adjustment structure of this utility model;

[0019] Figure 3 Another schematic diagram of the outlet reduction state of the air outlet adjustment structure of this utility model;

[0020] Figure 4 This is an exploded view of the air outlet adjustment structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the smoke hood of this utility model.

[0022] In the diagram: 1. Connecting pipe, 11. Guide ring, 12. First connecting seat, 13. Second connecting seat, 2. Blade assembly, 21. Blade, 211. Connecting block, 212. Fixing block, 3. Drive assembly, 31. Drive motor, 32. Gear, 33. Gear ring, 34. First shrink rope, 35. Second shrink rope, 4. Guide sleeve, 41. Fixing seat, 5. Main body of the smoke hood, 51. Air collection box, 511. Air outlet seat.

[0023] The implementation and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] To further understand the content, features, and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0028] This utility model discloses an air outlet adjustment structure for a range hood. Please refer to [link / reference]. Figures 1 to 5 The air outlet adjustment structure proposed in this utility model is connected above the air outlet seat 511 of the range hood, including a connecting pipe 1, a blade assembly 2 and a drive assembly 3; the connecting pipe 1 is a hollow pipe; the blade assembly 2 is located inside the hollow pipe and includes several blades 21, which are stacked on each other and form a smoke exhaust channel that is adapted to the inner diameter of the connecting pipe 1; the drive assembly 3 is used to drive the blade assembly 2 so that the upper ends of the several blades 21 move closer to each other and reduce the outlet of the smoke exhaust channel.

[0029] In this embodiment, the lower end of the connecting pipe 1 is connected to the air outlet of the range hood, and the upper end is used to connect to the kitchen exhaust duct. Several blades 21 are stacked circumferentially along the connecting pipe 1 to form an exhaust channel. When fumes flow through the connecting pipe 1, they can only flow through the exhaust channel to the exhaust duct and cannot flow out through the periphery of the blades 21. The upper ends of the blades 21 form the outlet of the exhaust channel. The upper ends of the blades 21 can be close to or far apart from each other, so that the size of the exhaust channel outlet is adjustable. The drive assembly 3 is drivenly connected to the blade assembly 2, so that the upper ends of the blades 21 can be close to or far apart from each other. Therefore, by controlling the drive assembly 3, the size of the exhaust channel outlet can be controlled to shrink or expand.

[0030] When the size of the range hood's air intake remains constant, the exhaust efficiency and noise level can be effectively controlled by adjusting the size of the exhaust duct's outlet. When cooking produces a large amount of fumes, the exhaust duct outlet can be narrowed, increasing the airflow velocity from the intake to the outlet and thus improving fume extraction efficiency. Conversely, when cooking produces a small amount of fumes, the exhaust duct outlet can be widened, reducing airflow velocity within the range hood, decreasing noise, and improving the user experience. Therefore, adjusting the exhaust duct outlet size according to the amount of fumes can meet the exhaust needs of different cooking environments, thereby improving the range hood's performance.

[0031] The air outlet adjustment structure of this utility model, such as Figure 2 As shown, the lower ends of several blades 21 are connected to the inner wall of the connecting pipe 1. The driving assembly 3 applies force to the upper ends of the blades 21, causing the outlet of the smoke exhaust channel to narrow. The lower ends of the blades 21 are rotatably connected to the inner wall of the connecting pipe 1, allowing the blades 21 to rotate relative to the connecting pipe 1. During the rotation of the blades 21, the upper ends of the blades 21 can move closer to each other towards the center line of the connecting pipe 1, or move further away from each other towards the center line of the connecting pipe 1. The driving assembly 3 applies force to the upper ends of the blades 21, driving the blades 21 to rotate, so that the upper ends of the blades 21 can move closer to each other or further away from each other.

[0032] The air outlet adjustment structure of this utility model, such as Figures 2 to 4 As shown, the drive assembly 3 includes a drive motor 31, a gear 32, a gear ring 33, a first retraction rope 34, and a second retraction rope 35. A guide ring 11 is connected to the inner wall of the connecting pipe 1. The gear ring 33 is slidably connected to the guide ring 11. The drive motor 31 is mounted on the connecting pipe 1, and its drive end is connected to the gear 32. The gear 32 meshes with the gear ring 33. Each blade 21 has a connecting block 211 at its upper end. The first retraction rope 34 passes through the connecting block 211 on one part of the blades 21, and the second retraction rope 35 passes through the connecting block 211 on another part of the blades 21. The first end of the first retraction rope 34 and the first end of the second retraction rope 35 are close to each other. The first end of the first retraction rope 34 is connected to the gear ring 33, and the first end of the second retraction rope 35 is connected to the connecting pipe 1. The second end of the first retraction rope 34 and the second end of the second retraction rope 35 are close to each other. The second end of the first retraction rope 34 is connected to the connecting pipe 1, and the second end of the second retraction rope 35 is connected to the gear ring 33.

[0033] A guide ring 11 and a gear ring 33 are arranged around the centerline of the connecting pipe 1. The gear ring 33 can slide along the guide ring 11 so that it can rotate around the centerline of the connecting pipe 1. The output end of the drive motor 31 can drive the gear 32 to rotate. The gear 32 meshes with the gear ring 33, thereby driving the output end of the drive motor 31 to drive the gear ring 33 to rotate. The rotation axis of the gear 32 intersects the centerline of the connecting pipe 1. Several blades 21 are divided into two groups with the rotation axis of the gear 32 as the boundary. The first contraction rope 34 passes through the connecting block 211 on the first group of blades 21 in sequence, and the second contraction rope 35 passes through the connecting block 211 on the second group of blades 21 in sequence. The first end of the first contraction rope 34 and the first end of the second contraction rope 35 are close to each other, and the second end of the first contraction rope 34 and the second end of the second contraction rope 35 are close to each other. The first end of the first contraction rope 34 is connected to the gear ring 33 and the second end is connected to the connecting pipe 1; the first end of the second contraction rope 35 is connected to the connecting pipe 1 and the second end is connected to the gear ring 33.

[0034] When the drive motor 31 drives the gear ring 33 to rotate clockwise, the second end of the first contraction rope 34 is fixed, while the first end moves with the gear ring 33, causing the middle of the first contraction rope 34 to gradually approach the center line of the connecting pipe 1. This causes the first contraction rope 34 to drive the first set of blades 21 to rotate, so that the upper ends of the first set of blades 21 also gradually approach the center line of the connecting pipe 1. Simultaneously, the first end of the second contraction rope 35 is fixed, while the second end moves with the gear ring 33. The middle of the second contraction rope 35 gradually approaches the center line of the connecting pipe 1, causing the second set of blades 21 to rotate, so that the upper ends of the second set of blades 21 also gradually approach the center line of the connecting pipe 1. Therefore, when the gear ring 33 rotates clockwise, the upper ends of both the first and second sets of blades 21 move closer to each other towards the center line of the connecting pipe 1, thereby narrowing the outlet of the smoke exhaust channel.

[0035] When the drive motor 31 drives the gear ring 33 to reverse, the second end of the first contraction rope 34 is fixed, while the first end moves with the gear ring 33. At this time, the first contraction rope 34 elastically contracts, causing its middle portion to gradually move away from the center line of the connecting pipe 1. This causes the first contraction rope 34 to drive the first set of blades 21 to rotate, so that the upper ends of the first set of blades 21 also gradually move away from the center line of the connecting pipe 1. Simultaneously, the first end of the second contraction rope 35 is fixed, while the second end moves with the gear ring 33. At this time, the second contraction rope 35 elastically contracts, causing its middle portion to gradually move away from the center line of the connecting pipe 1. This causes the second contraction rope 35 to drive the second set of blades 21 to rotate, so that the upper ends of the second set of blades 21 also gradually move away from the center line of the connecting pipe 1. Therefore, when the gear ring 33 reverses, the upper ends of both the first and second sets of blades 21 move closer together in a direction away from the center line of the connecting pipe 1, thereby restoring the expansion of the exhaust channel outlet.

[0036] The air outlet adjustment structure of this utility model, such asFigure 3 As shown, the inner wall of the connecting tube 1 is provided with a first connecting seat 12 connected to the second end of the first shrink rope 34 and a second connecting seat 13 connected to the first end of the second shrink rope 35. The first connecting seat 12 and the second connecting seat 13 are symmetrically arranged.

[0037] The first connecting seat 12 has a first rope-passing hole. The second end of the first contraction rope 34 can pass through the first rope-passing hole and be fixed to the first connecting seat 12, thereby simplifying the connection between the first contraction rope 34 and the connecting pipe 1 and improving the connection strength between the first contraction rope 34 and the connecting pipe 1. The second connecting seat 13 has a second rope-passing hole. The first end of the second contraction rope 35 can pass through the second rope-passing hole and be fixed to the second connecting seat 13, thereby simplifying the connection between the second contraction rope 35 and the connecting pipe 1 and improving the connection strength between the second contraction rope 35 and the connecting pipe 1.

[0038] The air outlet adjustment structure of this utility model, such as Figures 2 to 4 As shown, the drive motor 31 is connected to the outside of the connecting pipe 1, and its drive end extends into the connecting pipe 1 to connect with the gear 32, causing the gear 32 to drive the gear ring 33 to rotate along the guide ring 11. A through hole is provided in the wall of the connecting pipe 1. The drive motor 31 is mounted on the outer wall of the connecting pipe 1, and its drive end extends into the connecting pipe 1 through the through hole. This prevents the drive motor 31 from occupying the internal space of the connecting pipe 1, making the internal structure of the air outlet adjustment structure simpler and more compact.

[0039] The air outlet adjustment structure of this utility model, such as Figure 4 As shown, both the guide ring 11 and the gear ring 33 have notches. The guide ring 11 can be integrally formed with the connecting pipe 1 to simplify the connection between the guide ring 11 and the connecting pipe 1. When assembling the gear ring 33 onto the guide ring 11, one end of the gear ring 33 at its notch can be inserted into one end of the guide ring 11 at its notch. By rotating the gear ring 33, it can be aligned with the insertion point of the guide ring 11. This simplifies the assembly method of the gear ring 33 and the guide ring 11 and improves the convenience of the assembly process.

[0040] The air outlet adjustment structure of this utility model, such as Figure 4 As shown, a flow guide sleeve 4 is also provided inside the connecting pipe 1, and the lower ends of several blades 21 are connected to the flow guide sleeve 4. The flow guide sleeve 4 is arranged in a ring shape and is connected to the inner wall surface of the connecting pipe 1. The flow guide sleeve 4 can improve the connection position of several blades 21, thereby simplifying the rotation and installation method of several blades 21 on the inner wall of the connecting pipe 1, and improving the installation convenience of several blades 21.

[0041] The air outlet adjustment structure of this utility model, such as Figure 4As shown, the inner cylinder of the guide sleeve 4 is conical, with its inner diameter gradually decreasing from bottom to top. The guide sleeve 4 is located below the guide ring 11. The inner cylinder of the guide sleeve 4 can guide the fumes. After the fumes flow through the inner cylinder of the guide sleeve 4, they can flow towards the center of the exhaust channel. In this way, the fumes can be prevented from flowing directly towards the guide ring 11 after passing through the guide sleeve 4, thus avoiding airflow turbulence and improving the smoothness of airflow when the fumes flow through the outlet adjustment structure.

[0042] The air outlet adjustment structure of this utility model, such as Figure 4 As shown, a fixing seat 41 is provided on the upper end surface of the guide sleeve 4, and a fixing block 212 is provided on the outer wall surface of the blade 21. The fixing block 212 is connected to the fixing seat 41, and the lower end of the blade 21 extends into the guide sleeve 4. The outer wall surface of the blade 21 is the side of the blade 21 that is away from the center line of the connecting pipe 1, and the inner wall surface of the blade 21 is the side of the blade 21 that faces the center line of the connecting pipe 1. By setting the fixing block 212 on the outer wall surface of the blade 21, the blade 21 can be rotatably connected to the fixing seat 41 on the top surface of the guide sleeve 4, and the lower end of the blade 21 can extend into the guide sleeve 4. Thus, when the oil fumes flowing through the guide sleeve 4 and then flowing out of the guide sleeve 4, they can flow along the inner wall surface of the blade 21 to the exhaust channel, preventing the oil fumes from flowing out from the gap between the blade 21 and the guide sleeve 4, thereby further improving the guiding effect of the oil fumes.

[0043] like Figure 5 As shown, this utility model also proposes a range hood, which adopts the air outlet adjustment structure described above, including a range hood body 5, an air outlet is provided on the top of the air collection box 51 of the range hood body 5, an air outlet seat 511 is connected to the air outlet, and a connecting pipe 1 is connected and communicates with the air outlet seat 511.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air outlet adjustment structure, connected above the air outlet seat of a range hood, characterized in that, include: Connecting pipe (1), wherein the connecting pipe (1) is a hollow pipe; Blade assembly (2), the blade assembly (2) is disposed in the hollow pipe, including a plurality of blades (21), the plurality of blades (21) are stacked on each other and form a smoke exhaust channel adapted to the inner diameter of the connecting pipe (1); A drive assembly (3) is used to drive the blade assembly (2) so that the upper ends of the plurality of blades (21) move closer to each other and reduce the outlet of the exhaust channel.

2. The air outlet adjustment structure according to claim 1, characterized in that, The lower ends of several blades (21) are connected to the inner wall of the connecting pipe (1), and the driving assembly (3) applies force to the upper ends of several blades (21) to reduce the outlet of the smoke exhaust channel.

3. The air outlet adjustment structure according to claim 1, characterized in that, The drive assembly (3) includes a drive motor (31), a gear (32), a gear ring (33), a first retraction rope (34), and a second retraction rope (35). A guide ring (11) is connected to the inner wall of the connecting pipe (1). The gear ring (33) is slidably connected to the guide ring (11). The drive motor (31) is mounted on the connecting pipe (1), and its drive end is connected to the gear (32). The gear (32) meshes with the gear ring (33). Each blade (21) has a connecting block (211) at its upper end. The first retraction rope (34) passes through the connecting block (211) on a portion of the blades (21). 1) The second contraction rope (35) passes through the connecting block (211) on another part of the blade (21), the first end of the first contraction rope (34) and the first end of the second contraction rope (35) are close to each other, the first end of the first contraction rope (34) is connected to the toothed ring (33), and the first end of the second contraction rope (35) is connected to the connecting tube (1); the second end of the first contraction rope (34) and the second end of the second contraction rope (35) are close to each other, the second end of the first contraction rope (34) is connected to the connecting tube (1), and the second end of the second contraction rope (35) is connected to the toothed ring (33).

4. The air outlet adjustment structure according to claim 3, characterized in that, The inner wall of the connecting tube (1) is provided with a first connecting seat (12) connected to the second end of the first shrink rope (34) and a second connecting seat (13) connected to the first end of the second shrink rope (35), and the first connecting seat (12) and the second connecting seat (13) are symmetrically arranged.

5. The air outlet adjustment structure according to claim 3, characterized in that, The drive motor (31) is connected to the outside of the connecting pipe (1), and its drive end extends into the connecting pipe (1) and connects with the gear (32), so that the gear (32) drives the gear ring (33) to rotate along the guide ring (11).

6. The air outlet adjustment structure according to claim 3, characterized in that, Both the guide ring (11) and the gear ring (33) are provided with notches.

7. The air outlet adjustment structure according to claim 1, characterized in that, The connecting pipe (1) is also provided with a flow guide sleeve (4), and the lower ends of several blades (21) are connected to the flow guide sleeve (4).

8. The air outlet adjustment structure according to claim 7, characterized in that, The inner cylinder of the guide sleeve (4) is conical, and the inner diameter gradually decreases from bottom to top.

9. The air outlet adjustment structure according to claim 7, characterized in that, The upper end face of the flow guide sleeve (4) is provided with a fixing seat (41), and the outer side wall of the blade (21) is provided with a fixing block (212). The fixing block (212) is connected to the fixing seat (41), and the lower end of the blade (21) extends into the flow guide sleeve (4).

10. A range hood, employing the air outlet adjustment structure according to any one of claims 1 to 9, characterized in that, Includes a main body (5) of a range hood, the top of the air collection box (51) of the main body (5) of the range hood is provided with an air outlet, an air outlet seat (511) is connected to the air outlet, and the connecting pipe (1) is connected and communicates with the air outlet seat (511).

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