Range hood

Abstract

The utility model discloses a range hood which comprises a box body, a smoke inlet is formed in the front side of the box body, and the smoke inlet extends to the top of the box body; the smoke barrier assembly comprises a smoke barrier which is connected with the box body and can rotate relative to a fixed shaft of the box body, the smoke barrier can be at least in a first state and a second state, in the first state, the smoke barrier covers the smoke inlet, in the second state, the bottom of the smoke barrier is located on the front side of the top of the smoke barrier, and the smoke inlet is opened; the range hood is characterized in that on the same vertical plane extending in the front-back direction, the vertical distance between the rotating center of the smoke barrier and the top of the box body is d1, when the smoke barrier is in the second state, the vertical distance between the rotating center and the top of the smoke barrier is d2, and the requirement that d1 > = d2 > = 0 is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to an oil fume purification device, especially an oil fume extractor. BACKGROUND

[0002] The oil fume extractor has become one of the kitchen household electrical appliances in modern families. Usually, the oil fume extractor includes a top suction type and a side suction type. The oil fume extractor of the side suction type utilizes the vortex wind pressure principle to suck most of the oil fume close to the cooking bench in an arc form, which can reduce the adverse effect on human health, and the power source is close to the cooking bench, so that the suction effect of the power source is basically not reduced.

[0003] The existing side suction type oil fume extractor, such as the oil fume extractor with a side edge connecting rod driving flap disclosed in Chinese Patent No. 202220631630.9, includes an oil fume extractor body and a flap. The front side of the oil fume extractor body is provided with a smoke collecting hood. The top of the flap is hinged to the oil fume extractor body, and the flap is located on the outside of the smoke collecting hood. The smoke collecting hood has a recess. The bottom of the recess is provided with an air inlet.

[0004] For the side suction type oil fume extractor with the air inlet (smoke inlet) extending to the top of the box (smoke collecting hood), the top of the smoke baffle (flap) is higher than the top of the box after the smoke baffle is opened. In this movement state, in order to avoid movement interference, a large gap exists between the smoke baffle and the top of the box, which causes the oil fume to leak from the gap. In addition, in order to prevent the smoke baffle from interfering with the bottom of the cabinet or the cabinet door after being opened, a space is left for the smoke baffle during installation of the oil fume extractor, which causes a gap to exist between the bottom of the cabinet and the top of the box. This gap affects the appearance, is easy to accumulate dust, is not easy to clean, and causes trouble to the user. SUMMARY

[0005] The utility model solves the technical problem of the prior art, provides an oil fume extractor, reduces the smoke leakage, and reduces the cleaning difficulty.

[0006] The utility model adopts the technical scheme that an oil fume extractor includes:

[0007] A box, the front side of which is formed with a smoke inlet, and the smoke inlet extends to the top of the box;

[0008] A smoke baffle assembly, which includes a smoke baffle connected to the box and capable of rotating about the axis of the box. The smoke baffle can be at least in a first state and a second state. In the first state, the smoke baffle covers the smoke inlet. In the second state, the bottom of the smoke baffle is located in front of the top of the smoke baffle, and the smoke inlet is opened. The utility model is characterized in that:

[0009] On a vertical plane extending in the same front-back direction, the vertical distance between the rotation center of the smoke baffle and the top of the box is d1. When the smoke baffle is in the second state, the vertical distance between the rotation center and the top of the smoke baffle is d2, and d1≥d2≥0 is satisfied.

[0010] The smoke baffle rotates on a fixed axis relative to the cabinet. Due to this fixed-axis rotation, the smoke baffle will move upward when it moves from the first state to the second state. Therefore, the rotation center, the top of the cabinet, and the top of the smoke baffle are constrained when the smoke baffle is open, so that no matter whether the smoke baffle is in the first state or the second state, its top is not higher than the top of the cabinet. There is no need to leave a gap between the top of the cabinet and the cabinet, which reduces the difficulty of cleaning. Moreover, at the same opening angle, the gap between the top of the smoke baffle and the corresponding position of the cabinet is smaller, which can reduce smoke leakage.

[0011] To ensure the overall coordination of the machine conforms to the form of a side-suction range hood, d1 also meets the following requirement: d1≤10mm.

[0012] To avoid exposing any gaps behind the top of the smoke baffle, when the smoke baffle is in its first state on the same vertical plane, a perpendicular line is drawn from the rotation center to the smoke baffle, and the top of the smoke baffle extends beyond any intersection point of this perpendicular line and the smoke baffle.

[0013] Furthermore, to achieve the fixed-axis rotation of the smoke baffle, the range hood also includes a motion mechanism for driving the smoke baffle. The motion mechanism includes a drive mechanism, a connecting rod, a connecting shaft, and a mounting bracket. The drive mechanism is mounted on the mounting bracket, which is fixed to the housing. The connecting rod is driven to rotate by the drive mechanism and is also used to connect with the smoke baffle. The connecting shaft is mounted on the mounting bracket and located at the front end of the mounting bracket. The smoke baffle is also rotatably connected to the mounting bracket via the connecting shaft. The point intercepted on any vertical plane by the central axis of the connecting shaft is denoted as the rotation center.

[0014] To cover the gap between the smoke baffle and the top of the housing when the smoke baffle is closed, a decorative strip is provided on the top front side of the housing. The decorative strip has a recessed clearance groove on the side facing the inside of the housing, and the connecting shaft of the motion mechanism is located in the clearance groove.

[0015] Preferably, when the smoke baffle is in the second state, the minimum horizontal distance between the front surface of the decorative strip and the smoke baffle is d3, and satisfies 0≤d3≤3mm.

[0016] For ease of processing, the central axis of the connecting shaft is located at the midpoint between the top and bottom of the decorative strip.

[0017] To avoid gaps between the smoke baffle and the side panels of the housing, the housing also includes a first side panel, a second side panel, and a back panel. There are two first side panels and two second side panels. The first side panels extend forward from the left and right ends of the back panel, respectively. The second side panel on the left extends to the right from the front end of the first side panel on the left, and the second side panel on the right extends to the right from the front end of the first side panel on the right. The smoke inlet is located between the two second side panels.

[0018] The connecting rod passes through the second side plate, and each second side plate has a pressed pattern formed by the front surface of the second side plate being recessed into the box.

[0019] A smoke baffle bracket is provided on the back side of the smoke baffle. The smoke baffle bracket is connected to the connecting rod and the connecting shaft respectively. When the smoke baffle is in the first state, the part of the smoke baffle bracket located in front of the second side plate is embedded in the mold.

[0020] Furthermore, the range hood also includes a panel assembly, which includes a panel and a panel support. The panel support covers the front side of the housing, and the panel is disposed on the front surface of the panel support. At least a portion of the panel support is recessed into the housing. The smoke inlet is located on the front side of the housing above the panel. When the smoke baffle is in the second state, the space between the smoke baffle and the front side of the panel support forms a smoke collection chamber, and the smoke inlet is located within the smoke collection chamber.

[0021] Furthermore, to prevent oil dripping from the top of the box from puncturing it, the panel support is provided with an opening, a filter screen is provided at the opening, and the panel support has flanges formed on the left and right sides of the opening. The flanges protrude into the box, and the filter screen and the flanges are formed as solid parts.

[0022] Compared with the prior art, the advantages of this utility model are as follows: the smoke baffle rotates on a fixed axis relative to the cabinet. Due to the fixed axis rotation, the smoke baffle will move upward when it moves from the first state to the second state. Therefore, the rotation center, the top of the cabinet, and the top of the smoke baffle are constrained for the state when the smoke baffle is open, so that no matter whether the smoke baffle is in the first state or the second state, its top is not higher than the top of the cabinet. There is no need to leave a gap between the top of the cabinet and the cabinet, which reduces the difficulty of cleaning. Moreover, at the same opening angle, the gap between the top of the smoke baffle and the corresponding position of the cabinet is smaller, which can reduce smoke escape. 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 side view of the range hood in the open state according to an embodiment of the present utility model;

[0025] Figure 3 for Figure 2 A magnified schematic diagram of part I;

[0026] Figure 4 This is a schematic diagram of the decorative strip, smoke baffle assembly, and their movement mechanism of the range hood according to an embodiment of the present utility model;

[0027] Figure 5 for Figure 4 A magnified schematic diagram of part II;

[0028] Figure 6 for Figure 1 A schematic diagram of the concealed smoke baffle assembly of a range hood;

[0029] Figure 7 This is a schematic diagram of the panel support of the range hood according to an embodiment of the present utility model;

[0030] Figure 8 This is a schematic diagram of the range hood in the off state according to an embodiment of the present utility model;

[0031] Figure 9 This is a sectional side view of the range hood in the closed state according to an embodiment of the present invention;

[0032] Figure 10 for Figure 9 A magnified schematic diagram of part III. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] See Figures 1-10 A range hood, a side-suction range hood, includes a housing 1, a fan frame 2 connected to the housing 1, a fan (not shown) disposed in the fan frame 2, a panel assembly 4, a smoke baffle assembly 5, and a filter screen 6.

[0036] The front side of the housing 1 ("front side" refers to the side of the range hood closest to the user when installed, hereinafter the same) is open. The panel assembly 4 is located on the front side of the housing 1. The panel assembly 4 includes a panel 41 and a panel bracket 42. The panel bracket 42 covers the open front side of the housing 1, and the panel 41 is located on the front surface of the panel bracket 42. The panel bracket 42 is recessed into the housing 1 at least in the portion corresponding to the panel 41, which can be used to collect smoke. The portion of the open front side of the housing 1 above the panel 41 constitutes the smoke inlet 11. The smoke inlet 11 extends upward to the top of the front side of the housing 1 (a certain installation gap is allowed, such as the space occupied by the panel bracket 42, or the space occupied by the decorative strip 7 described below). The panel bracket 42 has an opening 421. The fumes drawn in from the smoke inlet 11 are accelerated by the recessed portion of the panel bracket 42 and enter the interior of the housing 1 through the opening 421, and are discharged upward by the fan.

[0037] The smoke baffle assembly 5 includes a smoke baffle 51 and a smoke baffle bracket 52 disposed on the back side of the smoke baffle 51. The smoke baffle 51 can be in at least a first state and a second state. In the first state, it covers the smoke inlet 11, thereby closing the smoke inlet 11. In the second state, the smoke inlet 11 is opened. The space between the smoke baffle 51 and the front side of the panel bracket 42 forms a smoke collecting chamber Q, and the smoke inlet 11 is located in the smoke collecting chamber Q. The back side of the smoke baffle 51 refers to the side of the smoke baffle 51 facing the inside of the housing 1 when the smoke baffle 51 is in the first state.

[0038] In this embodiment, the smoke baffle 51 can rotate relative to the housing 1 about an axis extending in the left-right direction of the range hood (i.e., the left-right direction of the range hood relative to the user in its installed state). In the second state, the bottom of the smoke baffle 51 is located in front of its top. For this purpose, the range hood also includes a motion mechanism for driving the smoke baffle 51. The motion mechanism includes a drive mechanism 81, a connecting rod 82, a connecting shaft 83, and a mounting bracket 84. The drive mechanism 81 is mounted on the mounting bracket 84, which is fixed to the housing 1, specifically to the top of the housing 1 in this embodiment. One end of the connecting rod 82 is connected to the output end of the drive mechanism 81 and is driven to rotate by the drive mechanism 81. The other end of the connecting rod 82 is connected to the smoke baffle bracket 52. The connecting shaft 83 is mounted on the mounting bracket 84 and is located at the front end of the mounting bracket 84, approximately aligned with the front top of the top of the housing 1. The smoke baffle bracket 52 is rotatably connected to the mounting bracket 84 via a connecting shaft 83. The connection between the smoke baffle bracket 52 and the connecting shaft 83 can be such that the connecting part of the smoke baffle bracket 52 is sleeved on the outer circumference of the connecting shaft 83. This allows the connecting shaft 83 to be fixed relative to the mounting bracket 84, while the smoke baffle bracket 52 can rotate relative to the connecting shaft 83, or vice versa. The smoke baffle bracket 52 and the connecting shaft 83 are relatively fixed and rotate synchronously. The central axis of the connecting shaft 83 serves as the rotation center of the smoke baffle 51. For ease of description, in this invention, the central axis of the connecting shaft 83 is considered to be in any vertical plane S (e.g., ...). Figure 1 As shown, the point intercepted on the range hood is denoted as the rotation center O (the characteristics of the rotation center O described below are satisfied by any point on the central axis of the connecting shaft 83). This vertical plane S is a plane extending in the front-to-back direction, and... Figure 2 The cross-sections shown are parallel or on the same plane.

[0039] On the same vertical plane S, the vertical distance between the rotation center O and the top of the housing 1 is d1 (i.e., the height difference between the two). When the smoke baffle 51 is in the second state, the vertical distance between the rotation center O and the top of the smoke baffle 51 is d2 (i.e., the height difference between the two), and d1≥d2≥0 is satisfied. When d1=d2, the smoke baffle 51 is flush with the top of the housing 1. On the same vertical plane, when the smoke baffle 51 is in the first state, a perpendicular line h is drawn from the rotation center O to the smoke baffle 51 (the smoke baffle 51 is a flat plate of uniform thickness, so a line perpendicular to any surface of the smoke baffle 51 can be drawn). The top of the smoke baffle 51 extends beyond any intersection point of the perpendicular line h and the smoke baffle 51 to block the gap between the smoke baffle 51 and the top of the housing 1. "Exceeding" means that the perpendicular line h passes through the smoke baffle 51 rather than being outside the smoke baffle 51. Preferably, d1≤10mm to ensure the overall appearance of the machine. When d1 = 10mm, when the smoke baffle 51 is in the first state, the vertical distance between the smoke baffle 51 and the vertical line h is no greater than 7.7mm.

[0040] In other words, the smoke baffle 51 rotates about a fixed axis relative to the cabinet 1. Due to this rotation, the smoke baffle 51 will move upwards when it moves from the first state to the second state. Therefore, the constraint of d1≥d2≥0 is required to ensure that the top of the smoke baffle 51 is not higher than the top of the cabinet 1, regardless of whether it is in the first or second state. When the smoke baffle 51 changes from the first state to the second state, the top of the smoke baffle 51 moves upwards, but still does not exceed the top of the cabinet 1, eliminating the need for a gap between the top of the cabinet and the cabinet, thus reducing cleaning difficulty. Under this constraint, when the smoke baffle 51 is opened to the same angle, the gap between the smoke baffle 51 and the top front side of the cabinet 1 is smaller than the gap between the smoke baffle 51 and the top front side of the cabinet 1 when the smoke baffle 51 exceeds the top of the cabinet 1, thereby reducing the risk of smoke escaping through this gap. The more the top of the smoke baffle 51 extends beyond the vertical line h and any intersection point with the smoke baffle 51, the smaller the gap is when the smoke baffle 51 is in the second state, and the lower the risk of smoke escaping.

[0041] The motion mechanism of the smoke baffle 51 includes an active end and a driven end. The structure of the active end is as described above. There are two smoke baffle supports 52, which are respectively arranged on the left and right sides of the smoke baffle 51. The connecting rod 82 of the active end is connected to one of the smoke baffle supports 52 on the smoke baffle 51. Compared with the active end, the driven end does not have a drive mechanism 81, but the other structures are the same. Its connecting rod 82 is connected to the other smoke baffle support 52 on the smoke baffle 51.

[0042] A decorative strip 7 is provided on the top front side of the housing 1. A recessed clearance groove 71 is formed on the side of the decorative strip 7 facing inwards from the housing 1, within which the connecting shaft 83 of the motion mechanism can be located. The larger d1 is, the greater the height of the decorative strip 7; therefore, the upper limit of d1 is 10mm to avoid the overall coordination of the machine no longer conforming to the appearance of a side-suction range hood. The top of the panel bracket 42 is close to the lower end of the decorative shaft 7. When the smoke baffle 51 is in the second state, the minimum horizontal distance between the front surface of the decorative strip 7 and the smoke baffle 51 is d3, and satisfies 0≤d3≤3mm to control smoke escape and ensure better smoke extraction. To facilitate the processing of the clearance groove 71 of the decorative strip 7, the central axis of the connecting shaft 83 is located at the midpoint between the top and bottom of the decorative strip 7 (i.e., on the same vertical plane S, the rotation center O is located at the midpoint in the vertical direction of the decorative strip 7).

[0043] See Figure 6The housing 1 also includes a first side panel 12, a second side panel 13, and a back panel 14. The first side panel 12 has two panels spaced apart from each other, extending forward from the left and right ends of the back panel 14, respectively. The second side panel 13 also has two panels spaced apart from each other, with the left side panel 13 extending to the right from the front end of the left side panel 12, and the right side panel 13 extending to the right from the front end of the right side panel 12. The second side panels 13 are located above the panel 41, and the aforementioned smoke inlet 11 is located between the two second side panels 13.

[0044] The position of the second side plate 13 corresponds to the position of the smoke baffle bracket 52, and the connecting rod 82 can pass through the second side plate 13. Each second side plate 13 has a molding 131 formed on it. The molding 131 is formed by recessing the front surface of the second side plate 13 into the housing 1. When the smoke baffle 51 is in the first state, the part of the smoke baffle bracket 52 located on the front side of the second side plate 13 can be embedded in the molding 131, thereby reducing the gap between the smoke baffle 51 and the second side plate 13. The smoke baffle 51 can be flush with the panel 41.

[0045] The opening 421 on the panel bracket 42 is typically rectangular, and the filter 6 is positioned at this opening 421. The panel bracket 42 has flanges 422 formed on the left and right edges of the opening 421, protruding into the housing 1. The filter 6 and the flanges 422 correspond to a solid portion 61, which is designed to be opposite to the opening in the filter 6, meaning it is not perforated. Thus, oil dripping downwards from the left and right sides inside the fan bracket 2 can be caught by the flanges 422, while the presence of the solid portion 61 prevents oil from dripping down from the filter 6, thereby avoiding oil dripping onto the stovetop.

Claims

1. A range hood, comprising: The box (1) has a smoke inlet (11) formed on its front side, and the smoke inlet (11) extends to the top of the box (1); A smoke baffle assembly (5) includes a smoke baffle (51) connected to a housing (1) and rotatable relative to the housing (1) on a fixed axis. The smoke baffle (51) can be in at least a first state and a second state. In the first state, the smoke baffle (51) covers the smoke inlet (11). In the second state, the bottom of the smoke baffle (51) is located in front of its top, and the smoke inlet (11) is open. The smoke baffle assembly (5) is characterized by the following features: On a vertical plane (S) extending in the same front-back direction, the vertical distance between the rotation center (O) of the smoke baffle (51) and the top of the box (1) is d1. When the smoke baffle (51) is in the second state, the vertical distance between the rotation center (O) and the top of the smoke baffle (51) is d2, and d1≥d2≥0 is satisfied.

2. The range hood according to claim 1, characterized in that: d1 also satisfies: d1≤10mm.

3. The range hood according to claim 1, characterized in that: When the smoke baffle (51) is in the first state on the same vertical plane (S), the rotation center (O) draws a perpendicular line (h) to the smoke baffle (51), and the top of the smoke baffle (51) extends beyond any intersection point of the perpendicular line (h) and the smoke baffle (51).

4. The range hood according to claim 1, characterized in that: The range hood also includes a motion mechanism for driving the smoke baffle (51). The motion mechanism includes a drive mechanism (81), a connecting rod (82), a connecting shaft (83), and a mounting bracket (84). The drive mechanism (81) is mounted on the mounting bracket (84), which is fixed to the housing (1). The connecting rod (82) is driven to rotate by the drive mechanism (81). The connecting rod (82) is also used to connect with the smoke baffle (51). The connecting shaft (83) is mounted on the mounting bracket (84) and located at the front end of the mounting bracket (84). The smoke baffle (51) is also rotatably connected to the mounting bracket (84) through the connecting shaft (83). The point intercepted by the central axis of the connecting shaft (83) on any vertical plane (S) is denoted as the rotation center (O).

5. The range hood according to claim 4, characterized in that: A decorative strip (7) is provided on the top front side of the box (1). A recessed clearance groove (71) is formed on the side of the decorative strip (7) facing the inside of the box (1). The connecting shaft (83) of the motion mechanism is located in the clearance groove (71).

6. The range hood according to claim 5, characterized in that: When the smoke baffle (51) is in the second state, the minimum horizontal distance between the front surface of the decorative strip (7) and the smoke baffle (51) is d3, and satisfies 0≤d3≤3mm.

7. The range hood according to claim 5, characterized in that: The central axis of the connecting shaft (83) is located at the midpoint between the top and bottom of the decorative strip (7).

8. The range hood according to claim 4, characterized in that: The housing (1) also includes a first side plate (12), a second side plate (13) and a back plate (14). There are two first side plates (12) and two second side plates (13). The first side plates (12) extend forward from the left and right ends of the back plate (14). The second side plate (13) on the left extends to the right from the front end of the first side plate (12) on the left. The second side plate (13) on the right extends to the right from the front end of the first side plate (12) on the right. The smoke inlet (11) is located between the two second side plates (13). The connecting rod (82) passes through the second side plate (13), and each second side plate (13) has a pressing pattern (131) formed thereon. The pressing pattern (131) is formed by recessing the front surface of the second side plate (13) into the box (1). A smoke baffle bracket (52) is provided on the back side of the smoke baffle (51). The smoke baffle bracket (52) is connected to the connecting rod (82) and the connecting shaft (83) respectively. When the smoke baffle (51) is in the first state, the part of the smoke baffle bracket (52) located in front of the second side plate (13) is embedded in the molded form (131).

9. The range hood according to claim 1, characterized in that: The range hood also includes a panel assembly (4), which includes a panel (41) and a panel bracket (42). The panel bracket (42) covers the front side of the housing (1). The panel (41) is disposed on the front surface of the panel bracket (42). The panel bracket (42) is recessed into the housing (1) at least in the portion corresponding to the panel (41). The smoke inlet (11) is located on the front side of the housing (1) above the panel (41). When the smoke baffle (51) is in the second state, the space between the smoke baffle (51) and the front side of the panel bracket (42) forms a smoke collection chamber (Q), and the smoke inlet (11) is located in the smoke collection chamber (Q).

10. The range hood according to claim 9, characterized in that: The panel support (42) has an opening (421), and a filter screen (6) is provided at the opening (421). The panel support (42) has flanges (422) formed on the left and right sides of the opening (421). The flanges (422) protrude into the box (1). The filter screen (6) and the flanges (422) are respectively formed as solid parts (61).

Images