Range hood

Abstract

The utility model provides a kind of range hood.The range hood includes cabinet, fume collecting hood and air intake component.Cabinet is formed with containing cavity, and fan assembly is arranged in containing cavity.Fume collecting hood is communicated with cabinet, and first air inlet is arranged on fume collecting hood and communicated with containing cavity.Air intake component is arranged at first air inlet, and located in fume collecting hood, and air intake component is enclosed to form air inlet channel, and cross-sectional area of air inlet channel gradually increases from air inlet end to air outlet end.In this way, stable high-pressure area can be formed at first air inlet, and high-pressure area can form strong adsorption force on rising oil fume, so that rising oil fume can be efficiently captured, and suction and exhaust effect of range hood and user's use experience can be significantly improved.

Description

Technical Field

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

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. They can employ a dual-inlet design, with the lower inlet positioned close to the cooking area to capture the large amounts of fumes generated during stir-frying, minimizing their escape. The upper inlet focuses on fumes that weren't fully captured by the lower inlet and rise rapidly with the hot airflow, achieving comprehensive coverage of fumes at different heights through secondary extraction.

[0003] However, the current top air inlet adopts a flat cross-section structure. In the process of oil fumes entering the air inlet, the lack of airflow guidance causes the airflow speed at the inlet to decrease rapidly. Some airflow will be lost along the edge of the top air inlet, making the actual negative pressure value formed at the top air inlet much lower than the theoretical design value. This makes it impossible to form a strong enough adsorption force for the rising oil fumes, which seriously affects the range hood's suction and exhaust effect and the user experience. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a range hood is provided, the technical solution of which is as follows.

[0005] The range hood includes a casing, a smoke collection hood, and an air inlet assembly. The casing contains a cavity, within which a fan assembly is housed. The smoke collection hood is connected to the casing and has a first air inlet that communicates with the cavity. The air inlet assembly is located at the first air inlet and within the smoke collection hood, forming an air intake channel whose cross-sectional area gradually increases from the inlet end to the outlet end.

[0006] The range hood of this invention features an air inlet assembly positioned at the first air inlet to form an air inlet channel. The cross-sectional area of ​​the air inlet channel gradually increases from the inlet end to the outlet end. When the fumes flow through the air inlet channel, a Venturi effect occurs. That is, when the fumes flow from an open external space towards the inlet end of the air inlet channel, the flow velocity of the fumes increases accordingly due to the relatively small cross-sectional area at the inlet end. When the fumes reach the outlet end, which has a relatively large cross-sectional area, a significant static pressure is generated. This creates a stable high-pressure zone at the first air inlet. This high-pressure zone exerts a strong adsorption force on the rising fumes, thus efficiently capturing them and significantly improving the range hood's extraction efficiency and user experience.

[0007] For example, the air intake channel is shaped like a bird's beak. With this design, the bird's beak-shaped air intake channel can quickly guide the dispersed oil fumes to converge at the first air inlet, and then flow into the air intake channel from the first air inlet. When the oil fumes flow through the air intake channel, they generate a large adsorption force, thereby adsorbing the rising oil fumes into the air intake channel, effectively preventing the oil fumes from escaping and ensuring the range hood's suction and exhaust effect.

[0008] For example, when the longitudinal cross-section of the fume hood is either a V-shape or a straight shape, the first air inlet is located at the top of the fume hood; or, when the longitudinal cross-section of the fume hood is triangular, the first air inlet is located on the inclined wall of the fume hood. With this configuration, when the range hood is a V-shaped range hood or a ceiling-mounted straight range hood, the first air inlet can be located at the top of the fume hood, allowing for the extraction of overflowing fumes. When the range hood is a side-draft triangular range hood, the first air inlet can be located on the inclined wall of the fume hood, making the range hood suitable for various usage scenarios. The air intake component located at the first air inlet can be applied to different types of fumes, effectively ensuring the flexibility and versatility of the air intake component.

[0009] For example, a flow cavity is formed between the front sidewall of the fan assembly and the inner sidewall of the casing, and at least a portion of the air inlet channel extends into the flow cavity; or, the air outlet end of the air inlet channel is correspondingly connected to the air inlet end of the flow cavity. With this configuration, at least a portion of the air inlet channel extends into the flow cavity, or the air outlet end of the air inlet channel is correspondingly connected to the air inlet end of the flow cavity. This allows the fumes flowing through the air inlet channel to directly flow into the flow cavity, preventing the fumes from overflowing into other areas of the receiving cavity due to gaps between the air inlet channel and the flow cavity, thus avoiding contamination of other areas inside the range hood.

[0010] For example, the range hood also includes a smoke-collecting chamber, which is located between the first air inlet and the air inlet channel of the smoke collection hood. The receiving cavity is connected to the outside through the air inlet channel and the smoke-collecting chamber in sequence. With this configuration, the smoke-collecting chamber can effectively reduce the escape of oil fumes, ensure the smoke collection and guiding effect of the smoke-collecting chamber, and thus easily draw the oil fumes into the smoke-collecting chamber. This not only reduces kinetic energy loss but also further improves the smoke extraction effect.

[0011] For example, the air inlet assembly includes a fixed part and an adjusting part, the adjusting part being movably disposed on the fixed part to expose at least the entire first air inlet or the partially obscured first air inlet. With this configuration, the adjusting part can be movably disposed on the fixed part to expose the entire first air inlet or the partially obscured first air inlet. Thus, the range hood can flexibly adjust the airflow or velocity of the cooking fumes flowing through the first air inlet according to the concentration of cooking fumes in the environment, thereby enabling the range hood to meet different usage scenarios and needs, effectively ensuring the range hood's suction and exhaust performance, reducing energy consumption, and significantly improving the range hood's practicality.

[0012] For example, the upper and lower ends of the adjusting part are respectively provided with a first guide part and a second guide part, and the fixing part is provided with a first guide groove corresponding to the first guide part and a second guide groove corresponding to the second guide part. With this configuration, when the adjusting part reciprocates relative to the fixing part, the first guide part of the adjusting part can slide along the first guide groove, and the second guide part of the adjusting part can slide along the second guide groove. Through the connection and limitation of the upper and lower parts between the adjusting part and the fixing part, the stability of the adjusting part during movement is effectively improved.

[0013] For example, the air intake assembly also includes a drive component disposed within the smoke collection hood. The drive component is pivotally connected to the adjustment section, and the drive component drives the adjustment section to reciprocate along the first guide groove and the second guide groove. With this configuration, the drive component can drive the adjustment section to reciprocate according to different usage conditions of the range hood, so as to expose the entire first air inlet or block part of the first air inlet, effectively improving the automation level of the air intake assembly and the convenience of user operation.

[0014] For example, the fume hood is also provided with a second air inlet communicating with the receiving cavity. Gas entering the receiving cavity through the second air inlet is discharged through the rear air intake of the fan assembly. This arrangement allows for the separate extraction and exhaust of cooking fumes using the first and second air inlets, thus ensuring the effective extraction of the range hood. Furthermore, the air intake assembly located at the first air inlet directly guides the cooking fumes drawn in through the first air inlet into the circulation cavity, preventing cross-mixing and turbulence with the fumes drawn in through the second air inlet, effectively improving the range hood's extraction efficiency and energy consumption.

[0015] For example, the regulating section includes an arc-shaped plate, the inner wall surface of which is configured as a guide surface. With this configuration, the inner wall surface of the arc-shaped plate can be configured as a guide surface, so that when oil fumes flow through the regulating section, the guide surface on it can guide the oil fumes to flow smoothly, effectively reducing the formation of turbulence and eddies, lowering the resistance to oil fume flow, and further improving the suction and exhaust efficiency of the range hood.

[0016] For example, a baffle plate is formed at the end of the adjustment section away from the fan assembly. When the air inlet channel is located at the first air inlet of the obstructed portion, the baffle plate is located inside the first air inlet. With this configuration, when the adjustment section is located at the first air inlet of the obstructed portion, the baffle plate can be located inside the first air inlet. Thus, on the one hand, the baffle plate can be used to obstruct the first air inlet to adjust the cross-sectional area of ​​the first air inlet; on the other hand, it can also ensure the flatness between the first air inlet and the lower end of the adjustment section, thereby improving the aesthetics of the range hood.

[0017] For example, the upper end of the adjusting part is recessed inward to form a clearance opening, which is adapted to the outer contour of the lower edge of the fan assembly. With this configuration, when the adjusting part moves to the position where the entire first air inlet is exposed, the clearance opening formed at the upper end of the adjusting part can prevent interference between the adjusting part and the fan assembly during the movement, effectively improving the practicality and reliability of the air inlet assembly.

[0018] For example, the air inlet of the air inlet assembly has a first region and a second region, and the air inlet channel is disposed in the first region. With this configuration, the air inlet channel can be disposed in the first region of the air inlet of the air inlet assembly, thereby eliminating the need to occupy additional space within the housing cavity, effectively optimizing the internal structure of the range hood, and avoiding the range hood becoming too large due to the installation of the air inlet assembly, which would affect the manufacturing cost and aesthetics of the range hood.

[0019] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0020] The above and other objects, features, and advantages of this utility model will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this utility model and form part of the specification. They are used together with the embodiments of this utility model to explain the utility model and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0021] Figure 1 A cross-sectional view of a range hood according to an exemplary embodiment of the present invention is shown. Figure 1 (The entire first air inlet of the air intake assembly is exposed);

[0022] Figure 2 A cross-sectional view of a range hood according to an exemplary embodiment of the present invention is shown. Figure 2(The first air inlet of the part blocked by the air intake assembly);

[0023] Figure 3 A bottom view of a range hood according to an exemplary embodiment of the present invention is shown;

[0024] Figure 4 A perspective view of an air inlet assembly disposed at a first air inlet according to an exemplary embodiment of the present invention is shown;

[0025] Figure 5 A front view of an air inlet assembly disposed at a first air inlet according to an exemplary embodiment of the present invention is shown;

[0026] Figure 6 A cross-sectional view of an air intake assembly according to an exemplary embodiment of the present invention is shown. Figure 1 (The adjustment section is positioned to expose the entire first air inlet);

[0027] Figure 7 A cross-sectional view of an air intake assembly according to an exemplary embodiment of the present invention is shown. Figure 2 (The adjustment unit is located at the first air inlet of the exposed portion);

[0028] Figure 8 A side view of the adjustment section according to an exemplary embodiment of the present invention is shown;

[0029] Figure 9 A front view of an adjustment section according to an exemplary embodiment of the present invention is shown.

[0030] The components indicated by the reference numerals in the figures are as follows:

[0031] 1. Chassis; 11. Receiving cavity; 12. Exhaust vent; 2. Fan assembly; 21. Front side wall; 22. Rear air intake; 3. Smoke hood; 31. First air inlet; 32. Second air inlet; 4. Air intake assembly; 41. Air intake channel; 42. Fixing part; 421. First guide groove; 422. Second guide groove; 423. Fixing plate; 424. First side plate; 425. Second side plate; 43. Adjustment part; 431. First guide part; 432. Second guide part; 433. Arc plate; 4331. Guide surface; 434. Baffle plate; 435. Clearance opening; 44. First area; 45. Second area; 46. Driving component; 47. Push rod; 5. Flow cavity; L1. First width; L2. Second width. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model more apparent, exemplary embodiments according to this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments of this utility model. It should be understood that this utility model is not limited to the exemplary embodiments described herein. Based on the embodiments of this utility model described herein, all other embodiments obtained by those skilled in the art without inventive effort should fall within the protection scope of this utility model.

[0033] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0034] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0035] One embodiment of this utility model provides a range hood that, through an air intake component 4 disposed at its first air inlet 31, can form a stable high-pressure zone at the first air inlet 31, thereby efficiently capturing rising cooking fumes. The following will provide a detailed description of an embodiment of this utility model of a range hood with reference to the accompanying drawings.

[0036] like Figures 1 to 3 As shown, the range hood includes a casing 1, a smoke hood 3, and an air inlet assembly 4. The casing 1 has a receiving cavity 11, within which a fan assembly 2 is installed. The smoke hood 3 is connected to the casing 1 and has a first air inlet 31 that communicates with the receiving cavity 11. The air inlet assembly 4 is located at the first air inlet 31 and within the smoke hood 3, forming an air inlet channel 41. The cross-sectional area of ​​the air inlet channel 41 gradually increases from the air inlet end to the air outlet end.

[0037] The aforementioned casing 1 can form a receiving cavity 11, and the fan assembly 2 can be installed in the receiving cavity 11. When the fan assembly 2 is running, it can create negative pressure in the casing 1. Under the action of negative pressure, the oil fumes from the external environment can flow into the casing 1 through the first air inlet installed on the fume hood 3, and then be discharged through the exhaust port 12 of the casing 1.

[0038] The aforementioned air intake component 4 can form an air intake channel 41 by its own structure, that is, by splicing multiple plates to form the air intake channel 41. Of course, in embodiments not shown, it can also be formed by cooperating with the inner wall of the smoke hood 3 to form the air intake channel 41, and this application does not specifically limit this.

[0039] The overall shape of the aforementioned air inlet channel 41 can be constructed as a gradually expanding shape. The air inlet end of the air inlet channel 41 can be set to correspond to the first air inlet 31 of the smoke hood 3. The air outlet end of the air inlet channel 41 can be connected to the receiving cavity 11 inside the chassis 1. Oil fumes can flow into the air inlet channel 41 through the air inlet end, and then flow into the receiving cavity 11 through the air outlet end. After the oil fumes flow into the air inlet end, their flow speed can be increased. As the cross-sectional area of ​​the air inlet channel 41 increases, the flow speed of the oil fumes gradually slows down, and the static pressure value increases simultaneously, thereby forming a strong adsorption force on the oil fumes. It can not only firmly adsorb the oil fumes, but also prevent them from forming turbulence or eddies in the air inlet channel 41.

[0040] The height of the air intake component 4 can be in the range of 55 mm to 70 mm, for example, 55 mm, 60 mm, 65 mm, 70 mm, etc. By limiting the height of the air intake component 4, the situation where the smoke hood 3 is affected by its excessive height can be avoided.

[0041] In this utility model of a range hood, the air inlet component 4 can be set at the first air inlet 31 and enclosed to form an air inlet channel 41. The cross-sectional area of ​​the air inlet channel 41 can gradually increase from the air inlet end to the air outlet end. When the fumes flow through the air inlet channel 41, a Venturi effect can be generated. That is, when the fumes flow from an open external space to the air inlet end of the air inlet channel 41, the flow velocity of the fumes will increase accordingly because the cross-sectional area of ​​the air inlet end is relatively small. When the fumes flow to the air outlet end, which has a relatively large cross-sectional area, a large static pressure will be generated. In this way, a stable high-pressure zone can be formed at the first air inlet 31. The high-pressure zone can form a strong adsorption force on the rising fumes, thereby efficiently capturing the rising fumes and significantly improving the range hood's suction and exhaust effect and the user experience.

[0042] In some embodiments, such as Figure 1 and Figure 2 As shown, the air intake channel 41 is shaped like a bird's beak.

[0043] Specifically, the cross-sectional area of ​​the air inlet end of the air inlet channel 41 can be relatively small, while from the air inlet end to the air outlet end, the air inlet channel 41 can gradually extend and widen to both sides until a relatively open opening is formed at the air outlet end. The inner contour of the air inlet channel 41 can be composed of continuous smooth curves. The streamlined inner contour can reduce the resistance generated when oil fumes flow through the air inlet channel 41 and reduce the generation of turbulence.

[0044] In the above embodiment, the beak-shaped air inlet channel 41 can quickly guide the dispersed oil fumes to converge at the first air inlet 31, and then flow into the air inlet channel 41 from the first air inlet 31. When the oil fumes flow through the air inlet channel 41, they generate a large adsorption force, thereby adsorbing the rising oil fumes into the air inlet channel 41, effectively preventing the oil fumes from escaping and ensuring the suction and exhaust effect of the range hood.

[0045] In some embodiments, when the longitudinal section of the smoke hood 3 is either a figure-seven or a straight line, the first air inlet 31 is located on the upper part of the smoke hood 3; or, when the longitudinal section of the smoke hood 3 is triangular, the first air inlet 31 is located on the inclined wall surface of the smoke hood 3.

[0046] In the above embodiments, when the range hood is a L-shaped range hood or a ceiling-mounted straight range hood, the first air inlet 31 can be located on the upper part of the smoke collection hood 3, thereby allowing the overflowing fumes to be sucked up and exhausted. When the range hood is a side-suction triangular range hood, the first air inlet 31 can be located on the inclined wall of the smoke collection hood 3, making the range hood suitable for various usage scenarios. Thus, the air intake component 4 located at the first air inlet 31 can be applied to different types of fumes, effectively ensuring the flexibility and versatility of the air intake component 4.

[0047] In some embodiments, such as Figure 1 and Figure 2 As shown, a flow cavity 5 is formed between the front sidewall 21 of the fan assembly 2 and the inner sidewall of the casing 1, and at least a portion of the air inlet channel 41 extends into the flow cavity 5; or, the air outlet end of the air inlet channel 41 is connected to the air inlet end of the flow cavity 5.

[0048] The front sidewall 21 of the aforementioned fan assembly 2 can cooperate with the inner sidewall of the casing 1 to form a flow cavity 5. The air inlet of the flow cavity 5 can be connected to the air outlet of the air inlet channel 41. The air outlet of the flow cavity 5 can be set corresponding to the fan assembly 2. After the oil fumes flow out from the air outlet of the air inlet channel 41, they can flow into the fan assembly 2 through the flow cavity 5.

[0049] In the above embodiments, at least a portion of the air inlet channel 41 extends into the circulation cavity 5, or the air outlet end of the air inlet channel 41 is connected to the air inlet end of the circulation cavity 5. In this way, the fumes flowing through the air inlet channel 41 can directly flow into the circulation cavity 5, avoiding the situation where fumes overflow into other areas of the receiving cavity 11 due to the gap between the air inlet channel 41 and the circulation cavity 5, thereby causing the fumes to pollute other areas inside the range hood.

[0050] In some embodiments, the range hood further includes a smoke collection chamber (not shown in the figure), which is disposed between the first air inlet 31 and the air inlet channel 41 of the smoke collection hood 3. The receiving cavity 11 is connected to the outside through the air inlet channel 41 and the smoke collection chamber in sequence.

[0051] The smoke collection chamber can be detachably installed inside the smoke collection hood 3. The smoke collection chamber can be conical, triangular prism, or trapezoidal. This allows the wind speed to gradually increase as the fumes flow through the smoke collection chamber, effectively ensuring the smoke collection and guiding effect of the chamber. This allows the fumes to be easily drawn into the smoke collection chamber, reducing kinetic energy loss. Furthermore, the structure is simple and easy to manufacture. Of course, the smoke collection chamber can also be constructed in other shapes; this application does not specifically limit its shape.

[0052] In the above embodiments, the smoke collection chamber can effectively reduce the escape of oil fumes, ensure the smoke collection and diversion effect of the smoke collection chamber, and thus easily draw oil fumes into the smoke collection chamber, which not only reduces kinetic energy loss, but also further improves the smoke absorption and exhaust effect.

[0053] In some embodiments, such as Figures 4 to 7 As shown, the air intake assembly 4 includes a fixing part 42 and an adjusting part 43. The adjusting part 43 is movably disposed on the fixing part 42 to expose at least the entire first air intake 31 or to cover the first air intake 31.

[0054] The aforementioned fixing part 42 can be fixedly installed inside the smoke hood 3 to provide a carrier for the installation of the adjusting part 43. The adjusting part 43 can be movably installed on the fixing part 42 to reciprocate relative to the fixing part 42.

[0055] The aforementioned adjusting part 43 can be plate-shaped. This plate-shaped adjusting part 43 can move away from the first air inlet 31, thus placing it in a first position where the entire first air inlet 31 is exposed. Alternatively, the plate-shaped adjusting part 43 can move closer to the first air inlet 31, thus placing it in a second position where the first air inlet 31 is partially obscured. In cooking scenarios such as frying or stir-frying, where the concentration of oil fumes is high, the adjusting part 43 can be in the first position to ensure that the first air inlet 31 has a large cross-sectional area, thereby increasing the airflow of oil fumes as they pass through the first air inlet 31. In cooking scenarios such as steaming or boiling, where oil fumes tend to disperse, the adjusting part 43 can be in the second position. By reducing the cross-sectional area of ​​the first air inlet 31, the airflow velocity of the oil fumes as they pass through the first air inlet 31 can be increased, thereby quickly capturing the dispersed oil fumes.

[0056] Of course, in embodiments not shown, the adjustment unit 43 may also block the entire first air inlet 31 to prevent grease condensation at the first air inlet 31 from dripping when the range hood is not in use. This not only improves the cleanliness of the range hood but also enhances the user experience.

[0057] In the above embodiment, the adjustment part 43 can be movably disposed on the fixed part 42 to expose the entire first air inlet 31 or to partially obscure the first air inlet 31. In this way, the range hood can flexibly adjust the airflow or speed of the fumes flowing through the first air inlet 31 according to the concentration of fumes in the environment, thereby enabling the range hood to meet different usage scenarios and needs, effectively ensuring the suction and exhaust effect of the range hood, reducing its energy consumption, and significantly improving its practicality.

[0058] In some embodiments, such as Figures 4 to 9 As shown, the upper and lower ends of the adjustment part 43 are respectively provided with a first guide part 431 and a second guide part 432, and the fixing part 42 is provided with a first guide groove 421 corresponding to the first guide part 431 and a second guide groove 422 corresponding to the second guide part 432.

[0059] The aforementioned fixing part 42 may include a first side plate 424 and a second side plate 425. The adjusting part 43 is movably disposed between the first side plate 424 and the second side plate 425. A first guide groove 421 and a second guide groove 422 may be formed on the first side plate 424 and the second side plate 425, respectively.

[0060] The first guide portion 431 can be disposed on the upper part of the adjusting portion 43, and the second guide portion 432 can be disposed on the lower part of the adjusting portion 43. When the adjusting portion 43 reciprocates relative to the fixed portion 42, the first guide portion 431 can extend into the first guide groove 421 to slide along the first guide groove 421, and the second guide portion 432 can extend into the second guide groove 422 to slide along the second guide groove 422.

[0061] The first guide portion 431 and the second guide portion 432 can be detachably connected to the adjusting portion 43 or integrally formed. Detachable connections can include plug-in connections or adhesive connections, etc., which are not specifically limited in this application. It is preferred that they be integrally formed to ensure the overall strength of the adjusting portion 43. Specifically, the upper and lower ends of the adjusting portion 43 can protrude towards the fixing portion 42 respectively to form the first guide portion 431 and the second guide portion 432.

[0062] The first guide portion 431 and the second guide portion 432 can be cylindrical, elongated, or the like, but are preferably cylindrical to improve the stability and smoothness of the adjustment portion 43 during movement.

[0063] The first guide section 431 and the second guide section 432 can be provided in pairs, such as Figure 9 The first guide portion 431 and the second guide portion 432 can be two pairs. The two first guide portions 431 can be disposed on opposite sides of the adjusting portion 43 and located at the upper end of the adjusting portion 43, and the two second guide portions 432 can be disposed on opposite sides of the adjusting portion 43 and located at the lower end of the adjusting portion 43. The stability of the movement of the adjusting portion 43 can be further improved by the pair of first guide portions 431 and second guide portions 432.

[0064] In the above embodiment, when the adjusting part 43 reciprocates relative to the fixed part 42, the first guide part 431 of the adjusting part 43 can slide along the first guide groove 421, and the second guide part 432 of the adjusting part 43 can slide along the second guide groove 422. Through the connection and limitation of the upper and lower parts between the adjusting part 43 and the fixed part 42, the stability of the adjusting part 43 during movement is effectively improved.

[0065] In some embodiments, such as Figure 1 and Figure 2 As shown, the air intake assembly 4 also includes a drive component 46 disposed in the smoke collection hood 3. The drive component 46 is pivotally connected to the adjustment part 43. The drive component 46 drives the adjustment part 43 to reciprocate along the first guide groove 421 and the second guide groove 422.

[0066] The output end of the aforementioned drive component 46 can be connected to a push rod 47, and the other end of the push rod 47 can be pivotally connected to the adjustment part 43. The drive component 46 can drive the adjustment part 43 to reciprocate along an arc between a first position and a second position via the push rod 47. Specifically, the aforementioned drive component 46 can be a stepper motor, but this application does not specifically limit it.

[0067] In embodiments not shown, the reciprocating motion of the adjustment unit 43 can also be manually controlled to reduce the manufacturing cost of the air intake assembly 4 and the possibility of malfunction.

[0068] In the above embodiments, the drive unit 46 can drive the adjustment unit 43 to reciprocate according to different usage conditions of the range hood, so as to expose the entire first air inlet 31 or cover the first air inlet 31, effectively improving the automation level of the air intake component 4 and the convenience of user use.

[0069] In some embodiments, such as Figure 1 and Figure 2 As shown, the smoke hood 3 is also provided with a second air inlet 32 ​​that communicates with the receiving cavity 11. The gas entering the receiving cavity 11 through the second air inlet 32 ​​is discharged through the rear air intake 22 of the fan assembly 2.

[0070] When the fan assembly 2 is in operation, the oil fumes from the external environment can flow into the housing through the first air inlet 31 and the second air inlet 32 ​​on the housing, respectively. The oil fumes drawn in through the second air inlet 32 ​​can be discharged through the rear air intake 22 of the fan assembly 2. The rear air intake 22 of the fan assembly 2 can be set corresponding to the rear side wall of the casing 1.

[0071] Taking a L-shaped range hood as an example, the height of the first air inlet 31 can be higher than the height of the second air inlet 32. Specifically, the first air inlet 31 can be positioned above the cookware to draw in and exhaust outward-drifting fumes. The height of the second air inlet 32 ​​can correspond to the height of the cookware to draw in and exhaust fumes generated during cooking. By setting the first air inlet 31 and the second air inlet 32 ​​at different heights, layered capture and exhaust of fumes can be achieved, further improving the range hood's extraction effect and efficiency.

[0072] In the above embodiments, the first air inlet 31 and the second air inlet 32 ​​can be used to draw in and exhaust oil fumes respectively, thereby ensuring the range hood's extraction and exhaust effect. Furthermore, the air intake component 4 installed at the first air inlet 31 can directly guide the oil fumes drawn in through the first air inlet 31 into the circulation chamber 5, avoiding cross-mixing and turbulence with the oil fumes drawn in through the second air inlet 32, effectively improving the range hood's extraction and exhaust efficiency and energy consumption.

[0073] In some embodiments, such as Figure 4 , Figures 6 to 8 As shown, the adjustment part 43 includes an arc-shaped plate 433, and the inner wall surface of the arc-shaped plate 433 is constructed as a guide surface 4331.

[0074] In the above embodiment, the inner wall surface of the arc plate 433 can be constructed as a guide surface 4331. When the oil fumes flow through the regulating part 43, the guide surface 4331 located thereon can guide the oil fumes to flow smoothly, effectively reducing the formation of turbulence and eddies, reducing the resistance to the flow of oil fumes, and further improving the suction and exhaust efficiency of the range hood.

[0075] In some embodiments, such as Figures 6 to 8 As shown, a baffle plate 434 is formed at the end of the adjustment part 43 away from the fan assembly 2. When the air inlet channel 41 is in the position of the first air inlet 31 of the shielding part, the baffle plate 434 is located inside the first air inlet 31.

[0076] The aforementioned baffle plate 434 may be formed at the lower end of the adjusting part 43 and located on the side away from the fan assembly 2. The shape of the aforementioned baffle plate 434 may be elongated, and the length of the baffle plate 434 may correspond to the length of the adjusting part 43.

[0077] In the above embodiment, when the adjusting part 43 is in the position of the first air inlet 31 of the blocking part, the baffle plate 434 can be located inside the first air inlet 31. In this way, on the one hand, the baffle plate 434 can be used to block the first air inlet 31 to adjust the cross-sectional area of ​​the first air inlet 31, and on the other hand, it can also ensure the flatness between the first air inlet 31 and the lower end of the adjusting part 43, thereby improving the aesthetics of the range hood.

[0078] In some embodiments, such as Figure 4 , Figure 5 and Figure 9 As shown, the upper end of the adjustment part 43 is recessed inward to form a relief opening 435, which is adapted to the outer contour of the lower edge of the fan assembly 2.

[0079] In the above embodiment, when the adjustment part 43 moves to the position where the first air inlet 31 is fully exposed, the avoidance opening 435 formed on the upper end of the adjustment part 43 can prevent the adjustment part 43 from interfering with the fan assembly 2 during the movement, effectively improving the practicality and reliability of the air inlet assembly 4.

[0080] In some embodiments, such as Figure 6 As shown, the fixing part 42 may have a fixing plate 423. When the adjusting part 43 is in the position where the entire first air inlet 31 is exposed, the upper end of the fixing plate 423 and the upper end of the adjusting part 43 have a first width L1 when projected in the horizontal direction, and the lower end of the fixing plate 423 and the lower end of the adjusting part 43 have a second width L2 when projected in the horizontal direction. The first width L1 is greater than the second width L2.

[0081] The two ends of the aforementioned fixing plate 423 are respectively connected to the first side plate 424 and the second side plate 425 to form a fixing part 42.

[0082] The value of the first width L1 can be in the range of 40 mm to 60 mm, for example, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, etc.

[0083] The value of the second width L2 can be in the range of 20 mm to 50 mm, for example, 20 mm, 30 mm, 40 mm, 45 mm, 50 mm, etc.

[0084] In the above embodiment, the first width L1 can be greater than the second width L2, so that the cross-sectional area of ​​the air inlet channel 41 can gradually increase from bottom to top. In this way, when the fumes flow into the air inlet channel 41, a Venturi effect can be generated. That is, by setting a small cross-sectional area (the air inlet end of the air inlet channel 41) in the air inlet channel 41, the flow rate of the fumes can be increased when they flow into the air inlet channel 41, so that the rising fumes can be captured quickly, further improving the suction efficiency and suction effect of the range hood.

[0085] In some embodiments, such as Figures 3 to 5 As shown, the air inlet of the air inlet assembly 4 has a first region 44 and a second region 45, and the air inlet channel 41 is disposed on the first region 44.

[0086] The first region 44 can be specifically referred to as the middle region of the air inlet of the air inlet assembly 4. There can be two second regions 45, located on either side of the first region 44. It is understood that the cross-sectional area of ​​the air inlet on the first region 44 of the air inlet assembly 4 can be adjusted by the adjusting part 43, while the cross-sectional area of ​​the air inlet on the second region 45 is a fixed cross-sectional area. Figure 4 As shown in the figure, the arrows can specifically represent the movement path of the fumes as they flow through the first air inlet 31.

[0087] The position of the first region 44 can correspond to the position of the fan assembly 2. Since the volume of the housing corresponding to the fan assembly 2 is large, a space for setting the air inlet assembly 4 can be formed in the receiving cavity 11 corresponding to the first region 44.

[0088] The length of the air intake component 4 is in the range of 300 mm to 400 mm, for example, 300 mm, 320 mm, 350 mm, 380 mm, 400 mm, etc. By limiting the length of the air intake component 43, it can be adapted to the width of the fan component 2.

[0089] In the above embodiments, the air inlet channel 41 can be set on the first area 44 of the air inlet of the air inlet component 4, so as not to occupy additional space in the receiving cavity 11, effectively optimizing the internal structure of the range hood, and avoiding the range hood from being too large due to the setting of the air inlet component 4, which would affect the manufacturing cost and aesthetics of the range hood.

[0090] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above exemplary embodiments are merely illustrative and are not intended to limit the scope of the invention. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as claimed in the appended claims.

[0091] For ease of description, the term "connection" may be used herein to describe the relationship between one or more elements or features shown in the figure and other elements or features. It should be understood that "connection" may include direct connections or indirect connections via other elements or features, and this document is intended to encompass all such cases.

[0092] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0093] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0094] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A range hood, characterized in that, include: A chassis, wherein a receiving cavity is formed inside the chassis, and a fan assembly is disposed inside the receiving cavity; A smoke hood, connected to the chassis, is provided with a first air inlet communicating with the receiving cavity; and An air intake assembly is disposed at the first air inlet and located inside the smoke collection hood. The air intake assembly forms an air intake channel, and the cross-sectional area of ​​the air intake channel gradually increases from the air inlet end to the air outlet end.

2. The range hood according to claim 1, characterized in that, The air intake channel is shaped like a bird's beak.

3. The range hood according to claim 1, characterized in that, When the longitudinal section of the smoke hood is either a figure-seven or a straight line, the first air inlet is located at the upper part of the smoke hood; or, when the longitudinal section of the smoke hood is triangular, the first air inlet is located on the inclined wall surface of the smoke hood.

4. The range hood according to claim 1, characterized in that, A flow cavity is formed between the front sidewall of the fan assembly and the inner sidewall of the chassis, and at least a portion of the air inlet channel extends into the flow cavity; or, the air outlet end of the air inlet channel is correspondingly connected to the air inlet end of the flow cavity.

5. The range hood according to claim 1, characterized in that, The range hood also includes a smoke collection chamber, which is disposed between the first air inlet of the smoke collection hood and the air inlet channel. The receiving cavity is connected to the outside through the air inlet channel and the smoke collection chamber in sequence.

6. The range hood according to claim 1, characterized in that, The air intake assembly includes a fixing part and an adjusting part, wherein the adjusting part is movably disposed on the fixing part to expose at least the entire first air intake or to block a portion of the first air intake.

7. The range hood according to claim 6, characterized in that, The upper and lower ends of the adjustment part are respectively provided with a first guide part and a second guide part, and the fixing part is provided with a first guide groove corresponding to the first guide part and a second guide groove corresponding to the second guide part.

8. The range hood according to claim 7, characterized in that, The air intake assembly also includes a drive component disposed within the smoke collection hood. The drive component is pivotally connected to the adjustment part, and the drive component drives the adjustment part to reciprocate along the first guide groove and the second guide groove.

9. The range hood according to claim 6, characterized in that, The smoke hood is also provided with a second air inlet that communicates with the receiving cavity. The gas entering the receiving cavity through the second air inlet is discharged through the rear air intake of the fan assembly.

10. The range hood according to claim 6, characterized in that, The adjustment section includes an arc-shaped plate, the inner wall surface of which is configured as a flow guide surface.

11. The range hood according to claim 6, characterized in that, A baffle plate is formed at the end of the adjustment section away from the fan assembly. When the air inlet channel is located at the first air inlet of the obstructed portion, the baffle plate is located inside the first air inlet.

12. The range hood according to claim 6, characterized in that, The upper end of the adjustment part is recessed inward to form a clearance opening, which is adapted to the outer contour of the lower edge of the fan assembly.

13. The range hood according to claim 1, characterized in that, The air inlet of the air inlet assembly has a first region and a second region, and the air inlet channel is disposed in the first region.

Images