Range hood

Abstract

The utility model discloses a range hood which comprises a range hood main body, a telescopic main body and a movable air duct assembly, the range hood main body is provided with a telescopic inner cavity and a smoke collecting cavity, and a smoke exhaust fan is arranged in the smoke collecting cavity; the telescopic body is slidably connected into the telescopic inner cavity, and a first exhaust opening is formed in a bottom plate of the telescopic body. The movable air duct assembly is arranged in the telescopic inner cavity, the air inlet end of the movable air duct assembly communicates with the first exhaust inlet, and the air outlet end communicates with the smoke collecting cavity; when the smoke exhaust fan is started and the telescopic main body extends out of the telescopic inner cavity, negative pressure is formed at the first exhaust inlet; and when the telescopic main body retracts into the telescopic inner cavity, the first exhaust inlet is hidden in the telescopic inner cavity. When the range hood is turned off, the telescopic body retracts into the telescopic inner cavity so that the first exhaust inlet can be hidden in the telescopic inner cavity, and therefore the first exhaust inlet can be hidden and protected, the appearance of the range hood in the turned-off state can be improved, impurities such as insects can be prevented from entering the first exhaust inlet, the front-back size of the range hood in the turned-off state can be reduced, and the service life of the range hood is prolonged. Therefore, the occupied space of a kitchen is reduced.

Description

Technical Field

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

[0002] A range hood is an appliance used to remove cooking fumes from the kitchen. Located above the cooktop, it expels these fumes while the user is cooking, providing a healthy cooking environment. However, existing range hoods have fixed front-to-back dimensions. In smaller kitchens, this can be quite space-consuming, and the air intake is often located on the top of the hood or on the front panel facing the user, meaning it cannot be concealed. Utility Model Content

[0003] The purpose of this utility model is to provide a range hood that solves the above-mentioned technical problems. It provides a top-mounted range hood with a concealable air intake. When the air intake of the range hood is concealed, the front-to-back dimensions of the range hood are reduced, thereby minimizing the use of kitchen space.

[0004] The present invention relates to a range hood comprising a range hood body, a telescopic body, and a movable air duct assembly; the range hood body has a telescopic inner cavity and a smoke collection cavity, and a smoke exhaust fan is provided in the smoke collection cavity; the telescopic body is slidably connected to the telescopic inner cavity, and a first air intake is provided on the bottom plate of the telescopic body; the movable air duct assembly is located in the telescopic inner cavity, with its air inlet end connected to the first air intake and its air outlet end connected to the smoke collection cavity; when the smoke exhaust fan is activated and the telescopic body extends out of the telescopic inner cavity, a negative pressure is formed at the first air intake; when the telescopic body retracts into the telescopic inner cavity, the first air intake is hidden inside the telescopic inner cavity.

[0005] According to one embodiment of the present invention, the mobile air duct assembly includes a fixed air duct and a telescopic air duct. The fixed air duct is located in the mounting cavity of the telescopic body, with its air inlet facing the first air intake. The telescopic air duct is connected to the telescopic inner cavity, with its air inlet connected to the air outlet of the fixed air duct and its air outlet connected to the smoke collection cavity.

[0006] According to one embodiment of the present invention, the telescopic air duct is a flexible air duct. When the telescopic body extends out of the telescopic inner cavity, the telescopic air duct is stretched, and when the telescopic body retracts into the telescopic inner cavity, the telescopic air duct is compressed.

[0007] According to one embodiment of the present invention, a partition plate is provided in the cavity of the main body of the range hood, which divides the cavity of the main body of the range hood into a telescopic inner cavity and a smoke collection cavity. The telescopic inner cavity is located on the front side of the partition plate, and the smoke collection cavity is located on the rear side of the partition plate.

[0008] According to one embodiment of the present invention, a telescopic air duct is connected between a partition plate and a telescopic body, and the air outlet end of the telescopic air duct is connected to the partition plate.

[0009] According to one embodiment of the present invention, the range hood further includes a drive assembly, which is connected to the telescopic body and is used to drive the telescopic body to extend or retract into the telescopic cavity.

[0010] According to one embodiment of the present invention, the driving assembly includes a driving motor, a driving gear, and a driving rack. The driving motor is connected inside the main body of the smoke hood, and its driving end is connected to the driving gear. A connecting plate extends from the telescopic main body, and the driving rack is connected to the connecting plate. The driving gear meshes with the driving rack.

[0011] According to one embodiment of the present invention, the smoke hood further includes a guide assembly, which is disposed in the telescopic inner cavity, and the connecting plate is connected to the guide assembly.

[0012] According to one embodiment of the present invention, the range hood is a "7" shaped range hood, and the main body of the range hood also has a front panel facing the user side. A second air intake is provided on the front panel, which is arranged along the width direction of the front panel and is connected to the smoke collection chamber.

[0013] According to one embodiment of the present invention, the range hood further includes an air quality detection module, which is disposed in the mounting cavity of the telescopic body. The top plate of the telescopic body is provided with a first detection hole corresponding to the air quality detection module, and / or the top plate of the range hood body is provided with a second detection hole. When the telescopic body retracts into the telescopic cavity, the first detection hole communicates with the air outside the top plate through the second detection hole.

[0014] Compared with the prior art, the smoke hood of this utility model has the following advantages:

[0015] When the range hood of this invention is turned on, the telescopic main body extends out of the telescopic inner cavity, so that the first air intake is located outside the telescopic inner cavity. The exhaust fan starts to create negative pressure at the first air intake, allowing the first air intake to draw in cooking fumes, which then flow through the moving air duct assembly to the smoke collection chamber. When the range hood is turned off, the telescopic main body retracts into the telescopic inner cavity, so that the first air intake is hidden inside the telescopic inner cavity. This not only hides and protects the first air intake, improving the appearance of the range hood when it is off and preventing insects and other debris from entering the first air intake, but also reduces the front-to-back dimensions of the range hood when it is off, thus reducing its footprint in the kitchen. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the cigarette lighter in the off state according to this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the cigarette lighter in the off state according to this utility model;

[0018] Figure 3 This is a structural diagram of the range hood in the powered-on state according to this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the range hood in the on-state from another angle.

[0020] Figure 5 This is a cross-sectional schematic diagram of the range hood in the powered-on state according to this utility model;

[0021] Figure 6 This is a cross-sectional schematic diagram of another embodiment of the range hood in the powered-on state of this utility model;

[0022] Figure 7 This is a structural disassembly diagram of the smoke hood of this utility model.

[0023] In the diagram: 1. Main body of the range hood, 11. Telescopic inner cavity, 12. Smoke collection chamber, 13. Exhaust fan, 14. Partition plate, 15. Front panel, 16. Second air intake, 17. Top plate, 171. Second detection hole, 2. Telescopic main body, 21. First air intake, 22. Connecting plate, 23. First detection hole, 3. Moving air duct assembly, 31. Fixed air duct, 32. Telescopic air duct, 4. Drive assembly, 41. Drive motor, 42. Drive gear, 43. Drive rack, 5. Guide assembly, 6. Air quality detection module.

[0024] 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

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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:

[0029] Please see Figures 1 to 5 This utility model discloses a range hood, which includes a range hood body 1, a telescopic body 2, and a movable air duct assembly 3. The range hood body 1 has a telescopic inner cavity 11 and a smoke collection cavity 12, and a smoke exhaust fan 13 is provided in the smoke collection cavity 12. The telescopic body 2 is slidably connected to the telescopic inner cavity 11, and a first air intake 21 is provided on the bottom plate of the telescopic body 2. The movable air duct assembly 3 is located in the telescopic inner cavity 11, with its air inlet end connected to the first air intake 21 and its air outlet end connected to the smoke collection cavity 12. When the smoke exhaust fan 13 is started and the telescopic body 2 extends out of the telescopic inner cavity 11, a negative pressure is formed at the first air intake 21. When the telescopic body 2 retracts into the telescopic inner cavity 11, the first air intake 21 is hidden in the telescopic inner cavity 11.

[0030] In this embodiment, the telescopic body 2 can move forward to extend into the telescopic inner cavity 11, and can also move backward to retract into the telescopic inner cavity 11. When the telescopic body 2 is fully extended into the telescopic inner cavity 11, the first air intake 21 is located outside the telescopic inner cavity 11 and is in communication with the outside air. When the telescopic body 2 is fully retracted into the telescopic inner cavity 11, the first air intake 21 is hidden inside the telescopic inner cavity 11. The movable air duct assembly 3 can at least partially move or deform with the telescopic body 2 so that its air inlet end remains in communication with the first air intake 21. When the range hood is turned on, the telescopic body 2 extends into the telescopic inner cavity 11, and the exhaust fan 13 operates. The movable air duct assembly 3 creates a negative pressure at the first air intake 21. The cooking fumes generated by the user are drawn into the air inlet end of the movable air duct assembly 3 through the first air intake 21, then flow along the movable air duct assembly 3 to the smoke collection chamber 12, and finally are discharged by the exhaust fan 13. When the range hood is turned off, the exhaust fan 13 stops rotating, and the telescopic body 2 retracts into the telescopic inner cavity 11 so that the first air intake 21 is hidden in the telescopic inner cavity 11. In this way, the first air intake 21 can be hidden and protected, thereby improving the appearance of the range hood in the off state and preventing insects and other debris from entering the first air intake 21. It can also reduce the front and rear dimensions of the range hood in the off state, thereby reducing the space occupied in the kitchen.

[0031] In the smoke hood of this utility model, such as Figure 2 , Figure 5 and Figure 7 As shown, the movable air duct assembly 3 includes a fixed air duct 31 and a telescopic air duct 32. The fixed air duct 31 is located in the mounting cavity of the telescopic body 2, with its air inlet facing the first air intake 21. The telescopic air duct 32 is connected to the telescopic inner cavity 11, with its air inlet communicating with the air outlet of the fixed air duct 31 and its air outlet communicating with the smoke collection chamber 12. The fixed air duct 31 can move synchronously with the telescopic body 2 so that its air inlet remains in communication with the first air intake 21. The telescopic air duct 32 can extend or shorten in the front-to-back direction so that it can maintain communication with both the smoke collection chamber 12 and the fixed air duct 31 through its extension and contraction deformation.

[0032] Specifically, such as Figure 2 , Figure 5 and Figure 7 As shown, the telescopic duct 32 is a flexible duct. When the telescopic body 2 extends out of the telescopic inner cavity 11, the telescopic duct 32 is stretched; when the telescopic body 2 retracts into the telescopic inner cavity 11, the telescopic duct 32 is compressed. When the range hood is turned on, the telescopic body 2 moves forward and extends out of the telescopic inner cavity 11, and the fixed duct 31 moves forward with the telescopic body 2, lengthening the telescopic duct 32. When the range hood is turned off, the telescopic body 2 moves backward and retracts into the telescopic inner cavity 11, and the fixed duct 31 moves backward with the telescopic body 2, shortening the telescopic duct 32.

[0033] In the smoke hood of this utility model, such as Figure 7As shown, a partition plate 14 is provided inside the cavity of the main body 1 of the range hood. The partition plate 14 divides the cavity of the main body 1 of the range hood into a telescopic inner cavity 11 and a smoke collection cavity 12. The telescopic inner cavity 11 is located on the front side of the partition plate 14, and the smoke collection cavity 12 is located on the rear side of the partition plate 14. The partition plate 14 extends along the width direction (left-right direction) of the main body 1 of the range hood. Dividing the cavity of the main body 1 of the range hood into the telescopic inner cavity 11 and the smoke collection cavity 12 by the partition plate 14 simplifies the forming method of the telescopic inner cavity 11 and the smoke collection cavity 12, making the internal structure of the main body 1 of the range hood simpler and more compact, and improving processing efficiency.

[0034] Specifically, such as Figure 7 As shown, the telescopic air duct 32 is connected between the partition plate 14 and the telescopic body 2, and the air outlet of the telescopic air duct 32 is connected to the partition plate 14. The partition plate 14 has a connection port that connects the smoke collection chamber 12 and the telescopic inner cavity 11. The air outlet of the telescopic air duct 32 is connected to the connection port to realize the connection between the telescopic air duct 32 and the smoke collection chamber 12.

[0035] In the smoke hood of this utility model, such as Figure 7 As shown, the range hood also includes a drive assembly 4, which is connected to the telescopic body 2. The drive assembly 4 is used to drive the telescopic body 2 to extend or retract into the telescopic inner cavity 11. When the range hood is turned on, the drive assembly 4 drives the telescopic body 2 to extend into the telescopic inner cavity 11, so that the first air intake 21 is located outside the telescopic inner cavity 11 and can normally draw in fumes. When the range hood is turned off, the drive assembly 4 drives the telescopic body 2 to retract into the telescopic inner cavity 11, so that the first air intake 21 is hidden inside the telescopic inner cavity 11. In this way, automatic driving of the telescopic body 2 can be achieved, thereby improving the ease of use of the range hood.

[0036] In the smoke hood of this utility model, such as Figure 2 , Figure 5 and Figure 6 As shown, the drive assembly 4 includes a drive motor 41, a drive gear 42, and a drive rack 43. The drive motor 41 is connected inside the main body 1 of the range hood, and its drive end is connected to the drive gear 42. A connecting plate 22 extends from the telescopic body 2, and the drive rack 43 is connected to the connecting plate 22. The drive gear 42 meshes with the drive rack 43. The drive gear 42 can rotate with the output end of the drive motor 41. The drive rack 43 meshes with the drive gear 42, which can convert the rotation of the output end of the drive motor 41 into the linear motion of the drive rack 43, so that the drive rack 43 drives the telescopic body 2 to move linearly through the connecting plate 22. When the range hood is turned on, the output end of the drive motor 41 rotates forward to drive the telescopic body 2 to move forward and extend into the telescopic inner cavity 11; when the range hood is turned off, the output end of the drive motor 41 rotates in reverse to drive the telescopic body 2 to move backward and retract into the telescopic inner cavity 11.

[0037] In the smoke hood of this utility model, such as Figure 7As shown, the range hood also includes a guide assembly 5, which is located within the telescopic inner cavity 11. A connecting plate 22 is connected to the guide assembly 5. The guide assembly 5 includes a slide rail and a slide bar. The slide rail is fixedly connected to the inner wall of the telescopic inner cavity 11, and the slide bar is slidably connected within the slide rail. The connecting plate 22 is connected to the telescopic body 2 and the slide bar. The drive motor 41 drives the drive gear 42 to rotate, causing the drive rack 43 to move. This, in turn, causes the telescopic body 2, which is connected to the drive rack 43 via the connecting plate 22, to move. The slide bar, slidably connected within the slide rail, indirectly guides the telescopic body 2 as it extends or retracts into the telescopic inner cavity 11, making the extension and retraction process of the telescopic body 2 smoother and the movement path more stable.

[0038] In the smoke hood of this utility model, such as Figure 2 , Figure 5 and Figure 6 As shown, the range hood is a "7"-shaped range hood. The main body 1 of the range hood also has a front panel 15 facing the user. The front panel 15 is provided with a second air intake 16, which is arranged along the width direction of the front panel 15 and is connected to the smoke collection chamber 12. When the range hood is working, when the telescopic body 2 extends out of the telescopic inner cavity 11, the exhaust fan 13 runs, which can simultaneously create negative pressure at the first air intake 21 and the second air intake 16. The oil fumes generated by the user's cooking are drawn into the smoke collection chamber 12 through the first air intake 21 and the second air intake 16, and finally discharged by the exhaust fan 13. By simultaneously drawing oil fumes from different directions through the first air intake 21 and the second air intake 16, the oil fumes can be prevented from escaping, improving the oil fume treatment effect of the range hood. When the range hood is working, if the telescopic body 2 does not extend out of the telescopic inner cavity 11, the exhaust fan 13 runs and draws oil fumes into the second air intake 16. With a concealable first air intake 21 and a normally open second air intake 16, the range hood can operate in different modes.

[0039] In this utility model of a range hood, the range hood also includes an air quality detection module 6, which is located in the mounting cavity of the telescopic body 2. The top plate of the telescopic body 2 is provided with a detection hole 23 corresponding to the air quality detection module 6, or / and the top plate 17 of the range hood body is provided with a second detection hole 171. When the telescopic body 2 retracts into the telescopic inner cavity 11, the first detection hole 23 communicates with the air outside the top plate 17 through the second detection hole 171.

[0040] In some embodiments, the air quality detection module 6 is located in the mounting cavity of the telescopic body 2. The top plate of the telescopic body 2 is provided with a detection hole 23 corresponding to the air quality detection module 6. When the range hood is running and the telescopic body 2 extends out of the telescopic inner cavity 11, the air above the telescopic body 2 can enter the mounting cavity of the telescopic body 2 through the detection hole 23 and be detected by the air quality detection module 6 to monitor the purification effect of the range hood on the oil fumes.

[0041] In such Figure 2 , Figure 3 , Figure 5 and Figure 6 In the embodiment of the range hood shown, the range hood also includes an air quality detection module 6, which is located in the mounting cavity of the telescopic body 2. The top plate of the telescopic body 2 is provided with a detection hole 23 corresponding to the air quality detection module 6, and the top plate 17 of the range hood body is provided with a second detection hole 171. When the telescopic body 2 retracts into the telescopic inner cavity 11, the first detection hole 23 communicates with the air outside the top plate 17 through the second detection hole 171. When the range hood is running and the telescopic body 2 is not extended from the telescopic inner cavity 11, the first detection hole 23 communicates with the air outside the top plate 17 through the second detection hole 171. This allows air above the top plate 17 to enter the first detection hole 23 through the second detection hole 171 and then be detected by the air quality detection module 6 to monitor the range hood's purification effect on cooking fumes. When the purification effect is substandard, the telescopic body 2 extends from the telescopic inner cavity 11, and the first air intake 21, in conjunction with the second air intake 16, draws in cooking fumes. Simultaneously, air above the telescopic body 2 can enter the installation cavity of the telescopic body 2 through the detection hole 23 and be detected by the air quality detection module 6. Furthermore, when the range hood is off, if the air quality detection module 6 is activated, air above the top plate 17 enters the first detection hole 23 through the second detection hole 171 and is then detected by the air quality detection module 6. This can serve as a patrol function to detect whether cooking fumes are flowing back into the kitchen.

[0042] 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. A range hood, characterized in that, include: The main body of the smoke hood (1) has a telescopic inner cavity (11) and a smoke collection cavity (12), and a smoke exhaust fan (13) is provided in the smoke collection cavity (12); The telescopic body (2) is slidably connected to the telescopic inner cavity (11), and the bottom plate of the telescopic body (2) is provided with a first air intake (21); The mobile air duct assembly (3) is located in the telescopic inner cavity (11), with its air inlet end connected to the first air intake (21) and its air outlet end connected to the smoke collection cavity (12). When the exhaust fan (13) is started and the telescopic body (2) extends out of the telescopic inner cavity (11), a negative pressure is formed at the first air intake (21); when the telescopic body (2) retracts into the telescopic inner cavity (11), the first air intake (21) is hidden inside the telescopic inner cavity (11).

2. The range hood according to claim 1, characterized in that, The mobile air duct assembly (3) includes a fixed air duct (31) and a telescopic air duct (32). The fixed air duct (31) is located in the mounting cavity of the telescopic body (2), with its air inlet facing the first air intake (21). The telescopic air duct (32) is connected to the telescopic inner cavity (11), with its air inlet communicating with the air outlet of the fixed air duct (31) and its air outlet communicating with the smoke collection cavity (12).

3. The range hood according to claim 2, characterized in that, The telescopic air duct (32) is a flexible air duct. When the telescopic body (2) extends out of the telescopic inner cavity (11), the telescopic air duct (32) is stretched, and when the telescopic body (2) retracts into the telescopic inner cavity (11), the telescopic air duct (32) is compressed.

4. The range hood according to claim 2, characterized in that, The body of the smoke hood (1) is provided with a partition plate (14) inside the cavity. The partition plate (14) divides the cavity of the body of the smoke hood (1) into a telescopic inner cavity (11) and a smoke collection cavity (12). The telescopic inner cavity (11) is located on the front side of the partition plate (14), and the smoke collection cavity (12) is located on the rear side of the partition plate (14).

5. The range hood according to claim 4, characterized in that, The telescopic air duct (32) is connected between the partition plate (14) and the telescopic body (2), and the air outlet end of the telescopic air duct (32) is connected to the partition plate (14).

6. The range hood according to claim 1, characterized in that, It also includes a drive assembly (4), which is connected to the telescopic body (2) and is used to drive the telescopic body (2) to extend or retract into the telescopic cavity (11).

7. The range hood according to claim 6, characterized in that, The drive assembly (4) includes a drive motor (41), a drive gear (42), and a drive rack (43). The drive motor (41) is connected inside the main body (1) of the smoke machine, and its drive end is connected to the drive gear (42). A connecting plate (22) extends from the telescopic main body (2), and the drive rack (43) is connected to the connecting plate (22). The drive gear (42) meshes with the drive rack (43).

8. The smoke hood according to claim 7, characterized in that, It also includes a guide assembly (5), which is disposed in the telescopic inner cavity (11), and the connecting plate (22) is connected to the guide assembly (5).

9. The range hood according to claim 1, characterized in that, The range hood is a "7" shaped range hood. The main body (1) of the range hood also has a front panel (15) facing the user side. The front panel (15) is provided with a second air intake (16). The second air intake (16) is arranged along the width direction of the front panel (15). The second air intake (16) is connected to the smoke collection chamber (12).

10. The smoke hood according to claim 1, characterized in that, It also includes an air quality detection module (6), which is located in the mounting cavity of the telescopic body (2). The top plate of the telescopic body (2) is provided with a first detection hole (23) corresponding to the air quality detection module (6), or / and the top plate (17) of the smoke machine body is provided with a second detection hole (171). When the telescopic body (2) retracts into the telescopic inner cavity (11), the first detection hole (23) communicates with the air outside the top plate (17) through the second detection hole (171).

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