A range hood

Abstract

The utility model discloses a kind of range hood, comprising: upper box body assembly;Air inlet body, relative upper box body assembly movement and have first state and at least part lower than the bottom of upper box body assembly and expose in the second state of upper box body assembly, when the air inlet body is in second state, the position of the front side end of the air inlet body is lower and rear relative first state when;The front side end of the air inlet body is formed with notch, when the air inlet body is in second state, the notch is at least partially exposed to upper box body assembly;The range hood further includes smoke baffle assembly, and the smoke baffle assembly includes baffle that can rotate relative to upper box body assembly, when the air inlet body is in second state, the baffle is turned down to shield the notch.

Description

Technical Field

[0001] This utility model relates to an oil fume purification device, and more particularly to an oil fume extractor. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. They operate on the principles of fluid dynamics, using a fan system installed inside to draw in cooking fumes and filtering out some grease particles with a filter. The fan system is typically a centrifugal fan, consisting of a casing, an impeller housed within the casing, and a motor that drives the impeller. When the impeller rotates, a negative pressure suction is generated at the center of the fan, drawing the cooking fumes from below into the fan. After being accelerated by the fan, the fumes are collected by the casing and guided outwards.

[0003] Traditional range hoods with smoke deflectors, such as side-draft range hoods, have a slanted design against the wall when the hood is off. When the hood is on, the smoke deflector opens, but the air intake box does not move, making it impossible to balance aesthetics when off with effective smoke extraction when on. Some products have the air intake box enclosed, with the lower side recessed when the hood is off, making it difficult to clean and maintain.

[0004] Therefore, range hoods that achieve a completely flat appearance when turned off while ensuring effective smoke extraction have been developed. Chinese Patent Application No. 201821250086.3 discloses a range hood with a movable smoke hood, comprising a main smoke hood and a movable smoke hood. The main smoke hood has a main smoke chamber inside, and the upper part of the movable smoke hood extends into the main smoke hood. The movable smoke hood has a movable smoke chamber communicating with the main smoke chamber. The outer surface of the movable smoke hood has a movable smoke outlet communicating with the movable smoke chamber. The movable smoke hood moves up and down and swings in coordination with the main smoke hood. The movable smoke hood includes at least a base plate, side baffles, a back baffle, and an oil collection cup.

[0005] In this type of range hood, the air intake (movable smoke hood) switches between closed and open working states through a combination of flipping and translating movements. Due to the limitations of the internal structure of the range hood, when the air intake is closed and stored in the main smoke hood, it may interfere with the internal structure. To avoid interference, the air intake needs to have a gap. However, after working for a long time, oil stains will accumulate inside after smoke enters through this gap, which may drip oil from the gap, affecting the user experience and posing a safety hazard. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a range hood that avoids oil dripping and improves the user experience, addressing the shortcomings of the existing technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a range hood, comprising:

[0008] Upper housing assembly;

[0009] An air inlet body is movable relative to the upper housing assembly, having a first state and a second state where it is at least partially below the bottom of the upper housing assembly and exposed above it. When the air inlet body is in the second state, the position of its front end is lower and rearward compared to the first state. Its characteristic is that:

[0010] The front end of the air inlet is provided with a notch, and when the air inlet is in the second state, the notch is at least partially exposed in the upper housing assembly.

[0011] The range hood also includes a smoke-blocking component, which includes a baffle that can rotate relative to the upper housing component. When the air inlet is in the second state, the baffle flips down to cover the notch.

[0012] By installing a smoke-blocking component, the range hood can block the exposed opening of the air intake when it is turned on, preventing fumes from entering the range hood through the opening and condensing in the unwanted space. This avoids oil dripping after prolonged use, thus improving the user experience and preventing the safety hazards caused by oil dripping.

[0013] Furthermore, in order to ensure that the baffle automatically follows and blocks the gap when the air inlet moves to the second state, the smoke-blocking assembly also includes a baffle bracket and a torsion spring. The baffle bracket is fixed to the upper housing assembly, and a rotating shaft is formed at the front end of the baffle. The rotating shaft is rotatably connected to the baffle bracket, and the torsion spring is disposed on the rotating shaft. The two free ends of the torsion spring abut against the baffle and the baffle bracket respectively, so that the baffle maintains a downward rotation trend.

[0014] Furthermore, to facilitate the intake of smoke into the air intake body, the air intake body includes a main body, on which a smoke inlet is formed. When the air intake body is in the second state, the smoke inlet is at least partially exposed in the upper housing assembly, and the notch is formed on the left and right sides of the main body.

[0015] Furthermore, the upper housing assembly includes a decorative panel located at the bottom and a mounting frame disposed on the upper surface of the decorative panel. The rear end of the mounting frame has an upwardly bent flange, which corresponds to the main body. The notch corresponds to the left and right sides of the flange, and the baffle is rotatably connected to the mounting frame.

[0016] When the air inlet is in the first state, the front end of the main body is located above the flange, and the rear edge of the notch is located on the rear side of the mounting frame; when the air inlet is in the second state, the front end of the main body is located on the rear side of the flange, and at this time the distance between the notch and the rear end of the mounting frame is greater than the distance when the air inlet is in the first state.

[0017] Therefore, the air intake body needs to form a gap to avoid interference with the flange during movement. Moreover, due to the movement of the air intake body, the gap will be more exposed when the range hood is open. By blocking the gap with a baffle, oil fumes can be prevented from entering through the gap and accumulating oil.

[0018] Furthermore, the air inlet also includes a first side plate, a second side plate, and a bottom plate. There are two first side plates, located on the left and right sides of the main body. There are also two second side plates, each corresponding to one first side plate. The second side plates are located outside the first side plates. The bottom plate connects the bottom of the first side plates and the corresponding second side plates. The notches are formed by the front ends of each first side plate and at least a portion of the front end of the bottom plate, with the notches formed by the rearward indentation of the respective front ends of the first side plates and the bottom plate. The space formed by the first side plates, second side plates, and bottom plate can be used to house some motion mechanisms.

[0019] Furthermore, to expand the smoke collection range, the range hood also includes a smoke baffle. When the air inlet is in the second state, the smoke baffle opens on the front side of the air inlet and forms a smoke collection chamber between the air inlet and the air inlet.

[0020] Preferably, the smoke baffle is rotatably connected to the bottom of the upper housing assembly via a crank that passes through the bottom plate.

[0021] Furthermore, to expand the smoke collection range, the range hood also includes a smoke baffle. When the air inlet is in the second state, the smoke baffle opens on the front side of the air inlet and forms a smoke collection chamber between the air inlet and the air inlet.

[0022] Compared with the prior art, the advantages of this utility model are: by setting a smoke-blocking component, it can block the exposed opening of the air intake when the range hood is in the open state, preventing oil fumes from entering the range hood from the opening and condensing and accumulating in the space where smoke is not desired. This can prevent oil dripping after long-term operation, thereby improving the user experience and avoiding the safety hazards caused by oil dripping. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the range hood in the open state according to an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional view of the range hood in the open state according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the air inlet of a range hood according to an embodiment of the present utility model;

[0026] Figure 4This is a schematic diagram of part of the upper housing assembly and smoke-blocking assembly of the range hood according to an embodiment of the present utility model;

[0027] Figure 5 This is a schematic diagram of the smoke-blocking component of a range hood according to an embodiment of the present utility model;

[0028] Figure 6 This is an exploded structural diagram of the smoke-blocking component of the range hood according to an embodiment of the present utility model;

[0029] Figure 7 This is a cross-sectional view of the open state of the upper housing assembly and smoke-blocking assembly of the hidden part of the range hood in an embodiment of the present utility model.

[0030] Figure 8 for Figure 7 A magnified schematic diagram of part I;

[0031] Figure 9 This is a partial cross-sectional view (relative to) of the upper housing assembly, air inlet, and smoke baffle assembly of the range hood according to an embodiment of the present invention in their open state. Figure 8 Add smoke baffle assembly);

[0032] Figure 10 This is a schematic diagram of the range hood in the off state according to an embodiment of the present utility model;

[0033] Figure 11 This is a cross-sectional view of the range hood in the closed state according to an embodiment of the present utility model;

[0034] Figure 12 This is a cross-sectional view of the closed state of the upper housing assembly and smoke-blocking assembly of the hidden part of the range hood according to an embodiment of the present utility model.

[0035] Figure 13 for Figure 12 A magnified schematic diagram of part II;

[0036] Figure 14 This is a partial cross-sectional view (relative to) of the upper housing assembly, air inlet, and smoke baffle assembly of the range hood in the closed state according to an embodiment of the present invention. Figure 13 Add smoke baffle assembly). Detailed Implementation

[0037] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0038] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0039] See Figures 1-3 , Figure 10 and Figure 11 A range hood includes an upper housing assembly 1, an air inlet 2, and a smoke baffle 3.

[0040] The upper housing assembly 1 includes an outer housing 11 and a fan frame 12 connected to the outer housing 11. The lower end of the fan frame 12 may be partially located inside the outer housing 11, and the fan frame 12 is used to house a fan (not shown).

[0041] The upper housing assembly 1 can be installed inside the kitchen cabinet. Since the width of the fan frame 12 usually needs to be compatible with the width of the fan, the fan frame 12 does not need to be large. However, the air inlet 2 needs to be larger to accommodate a standard household double burner. For these reasons, the upper housing assembly 1 is divided into an outer housing 11 and a fan frame 12. If the optimization of air intake efficiency is not considered, an integrated upper housing assembly 1 can also be used.

[0042] The air inlet 2 has a smoke inlet 21 formed on its front side, which can move relative to the upper housing assembly 1, thus having a first state and a second state. See also Figure 10 and Figure 11 When the air inlet 2 is in the first state, at least part of the air inlet 2, such as at least the front end, is hidden and housed within the upper housing assembly 1, and is located below the fan. In this embodiment, the air inlet 2 is completely housed within the upper housing assembly 1 at this time; see also Figure 1 and Figure 2When the air inlet 2 is in the second state, the air inlet 2 is at least partially below the bottom of the upper housing assembly 1 and exposed above the upper housing assembly 1, and the smoke inlet 21 is also below the bottom of the upper housing assembly 1 and exposed above the upper housing assembly 1. In this embodiment, the smoke inlet 21 is almost completely exposed. The "front" of the air inlet 2 mentioned above refers to the side of the air inlet 2 facing the user when it is in the second state.

[0043] The air inlet 2 moves in a combined motion of flipping and translation. It can be achieved using the method described in the background art, where the front end of the air inlet 2 slides and flips as a whole, or by rotating the air inlet 2 relative to the upper housing assembly 1 in a non-fixed-axis manner. When the air inlet 2 switches from the first state to the second state, it rotates backward and downward, causing the air inlet 2 to move backward as a whole.

[0044] The smoke baffle 3 is installed at the bottom of the upper housing assembly 1 (outer housing 11), and it can be in the third and fourth states, see [reference]. Figure 1 and Figure 2 When the air inlet 2 is in the second state, the smoke baffle 3 is in the third state, forming a smoke-collecting cavity Q between the smoke baffle 3 and the front side of the air inlet 2. This allows the smoke inlet 21 to move downwards and the smoke-collecting area to increase, ensuring better fume extraction during operation. (See also...) Figure 10 and Figure 11 When the air inlet 2 is in the first state, the smoke baffle 3 is in the fourth state. The smoke baffle 3 is closed at the bottom of the outer casing 11, and it can extend horizontally and be flush with the bottom of the outer casing 11, achieving a completely flat closed state. At the same time, the smoke inlet 21 of the air inlet 2 is closed, and the overall size of the machine is reduced to the minimum. The air inlet 2 and the smoke baffle 3 can be driven independently or in conjunction.

[0045] A smoke baffle bracket 31 is provided on the back of the smoke baffle 3, and the smoke baffle 3 is rotatably connected to the bottom of the upper housing assembly 1 via a crank 32 (which is part of the motion mechanism).

[0046] See Figures 3-9 as well as Figures 12-14The air inlet 2 includes a main body 22, a first side plate 23, a second side plate 24, and a bottom plate 25. The smoke inlet 21 is located on the main body 22. There are two first side plates 23, located on the left and right sides of the main body 22. There are also two second side plates 24, each corresponding to one first side plate 23. The second side plates 24 are located on the outer side of the first side plates 23 (i.e., the side away from the main body 22 relative to the first side plate 23). The bottom plate 25 connects the bottom of the first side plates 23 and the corresponding second side plates 24. When the air inlet 2 is in the first state and the second state, the main body 22 can gradually tilt downwards from front to back, and the bottom plate 25 can also gradually tilt downwards from front to back, with the tilt of the main body 22 being greater than that of the bottom plate 25. When the air inlet 2 is in the first state, the front end of the main body 22 is higher than the bottom plate 25. The space between the two side plates is used to house all or part of a motion mechanism (not shown, such as a connecting rod, crank, gear, etc.) as a base for mounting the motion mechanism.

[0047] In this embodiment, the upper housing assembly 1 includes a decorative panel 14 located at the bottom and a mounting frame 15 located on the upper surface of the decorative panel 14. A lighting device 16 is installed at the mounting frame 15. The rear end of the mounting frame 15 has an upwardly bent flange 151, which can be used for airflow guidance and also to enhance its own strength. The flange 151 corresponds to the main body 22 of the air inlet 2. At least part of the front end of each first side plate 23 and the bottom plate 25 of the air inlet 2 have a notch 251 formed by the rearward recess of the respective front end of the first side plate 23 and the bottom plate 25. When the air inlet 2 is in the first state, the front end of the base plate 25 located outside the notch 251 and the front end of the second side plate 24 are above the mounting frame 15. The rear edge of the notch 251 is located behind the mounting frame 15 and close to the mounting frame 14. The front end of the main body 22 is also located above the mounting frame 15. At the same time, the first side plate 23, the base plate 25, and the second side plate 24 correspond to the outer side (left or right) of the flange 151. When the air inlet 2 is in the second state, the front end of the base plate 25 located outside the notch 251 and the second side plate 24 are located behind the mounting frame 15 and close to the flange 151. Compared with the first state, the distance between the rear edge of the notch 251 and the rear end of the mounting frame 15 increases. The front end of the main body 22 can also be located behind the flange 151 and close to the flange 151. By forming notches 251 with the air inlet 2 adjacent to the left and right ends of the flange 151, interference between the air inlet 2 and the flange 151 during movement can be avoided. The aforementioned crank 32 passes through the base plate 25 (see...) Figure 1 Of course, the bottom plate 25 and the first side plate 23 of the air inlet 2 may also need to form clearance gaps 251 due to other internal structures (such as oil guides, flow guides, etc.) within the upper housing assembly 1.

[0048] As can be seen from the above, since the air inlet 2 is in the second state, the notch 251 is fully exposed or has a large exposed area. Therefore, when the range hood is working, oil fumes will enter this area. After a large amount of oil fumes accumulates, they will condense here and cause oil dripping. To this end, this utility model also provides a smoke-blocking component, which includes a baffle 41, a baffle bracket 42, and a torsion spring 43. The baffle bracket 42 is fixed to the bottom of the upper housing component 1, such as to the mounting frame 15. A rotating shaft 411 is formed at the front end of the baffle 41, which is rotatably connected to the baffle bracket 42. The rotating shaft 411 rotates in the left and right direction of the range hood. The torsion spring 43 is set on the rotating shaft 411, with one free end abutting against the baffle bracket 42 and the other free end abutting against the baffle 41, so that the baffle 41 maintains a downward rotation trend. The shape and size of the baffle 41 are adapted to the notch 251.

[0049] When the air inlet 2 is in the first state, part of the baffle 41 overlaps with the rear part of the base plate 25 located behind the notch 251 and is pushed upward. When the air inlet 2 gradually moves to the second state, under the action of the torsion spring 43, the baffle 41 rotates downward, thereby blocking the notch 251 of the air inlet 2.

[0050] Alternatively, the torsion spring 43 can be omitted. The baffle 41 can be movably connected to the first side plate 23 (or the bottom plate 25), or the movement of the baffle 41 can be achieved by forced interference (friction or structural interference) between the surfaces of the baffle 41 and the first side plate 23. Alternatively, a separate drive mechanism can be provided, as long as the baffle 41 can be rotated.

[0051] The aforementioned air inlet 2, smoke baffle 3, and fan can all be controlled by a voice module. A controller, a voice receiving module, and a voice parsing module can be installed on the range hood. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the corresponding drive mechanisms of the air inlet 2, smoke baffle 3, and fan to perform corresponding operations, thereby realizing intelligent control of the range hood and improving the user experience.

Claims

1. A range hood, comprising: Upper housing assembly (1); An air inlet (2) is movable relative to the upper housing assembly (1) and has a first state and a second state in which it is exposed above the bottom of the upper housing assembly (1), wherein when the air inlet (2) is in the second state, the front end of the air inlet (2) is positioned lower and further back than in the first state; characterized in that: The front end of the air inlet (2) has a notch (251) formed therein. When the air inlet (2) is in the second state, the notch (251) is at least partially exposed to the upper housing assembly (1). The range hood also includes a smoke-blocking component, which includes a baffle (41) that can rotate relative to the upper housing assembly (1). When the air inlet (2) is in the second state, the baffle (41) flips down to cover the notch (251).

2. The range hood according to claim 1, characterized in that: The smoke-blocking assembly also includes a baffle bracket (42) and a torsion spring (43). The baffle bracket (42) is fixed to the upper housing assembly (1). A pivot (411) is formed at the front end of the baffle (41). The pivot (411) is rotatably connected to the baffle bracket (42). The torsion spring (43) is mounted on the pivot (411). The two free ends of the torsion spring (43) abut against the baffle (41) and the baffle bracket (42) respectively, so that the baffle (41) maintains a downward rotation trend.

3. The range hood according to claim 1, characterized in that: The air intake body (2) includes a main body (22) on which a smoke inlet (21) is formed. When the air intake body (2) is in the second state, the smoke inlet (21) is at least partially exposed on the upper housing assembly (1). The notch (251) is formed on the left and right sides of the main body (22).

4. The range hood according to claim 3, characterized in that: The upper housing assembly (1) includes a decorative panel (14) located at the bottom and a mounting frame (15) disposed on the upper surface of the decorative panel (14). The rear end of the mounting frame (15) is formed with an upwardly bent flange (151). The flange (151) corresponds to the main body (22). The notch (251) corresponds to the left and right sides of the flange (151). The baffle (41) is rotatably connected to the mounting frame (15). When the air inlet (2) is in the first state, the front end of the main body (22) is located above the flange (151), and the rear edge of the notch (251) is located behind the mounting frame (15); when the air inlet (2) is in the second state, the front end of the main body (22) is located behind the flange (151), and at this time the distance between the notch (251) and the rear end of the mounting frame (15) is greater than the distance when the air inlet (2) is in the first state.

5. The range hood according to claim 3, characterized in that: The air inlet (2) further includes a first side plate (23), a second side plate (24), and a bottom plate (25). There are two first side plates (23) and they are disposed on the left and right sides of the main body (22). There are also two second side plates (24). Each second side plate (24) corresponds to one first side plate (23). The second side plate (24) is disposed on the outside of the first side plate (23). The bottom plate (25) is connected between the bottom of the first side plate (23) and the corresponding second side plate (24). The notch (251) is formed by the front end of each first side plate (23) of the air inlet (2) and at least part of the front end of the bottom plate (25). The notch (251) is formed by the rearward indentation of the front end of each of the first side plate (23) and the bottom plate (25).

6. The range hood according to claim 5, characterized in that: The range hood also includes a smoke baffle (3). When the air inlet (2) is in the second state, the smoke baffle (3) opens on the front side of the air inlet (2) and forms a smoke collection chamber (Q) between the air inlet (2) and the air inlet (2).

7. The range hood according to claim 6, characterized in that: The smoke baffle (3) is rotatably connected to the bottom of the upper housing assembly (1) via a crank (32) that passes through the bottom plate (25).

8. The range hood according to claim 1, characterized in that: The range hood also includes a smoke baffle (3). When the air inlet (2) is in the second state, the smoke baffle (3) opens on the front side of the air inlet (2) and forms a smoke collection chamber (Q) between the air inlet (2) and the air inlet (2).

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