Range hood

Abstract

The utility model relates to a range hood which comprises a box body, an air inlet is formed in the front part of the box body; the smoke baffle assembly is arranged on the front portion of the box body and can open and close the air inlet, the smoke baffle assembly comprises a first smoke baffle and a second smoke baffle which are sequentially arranged from top to bottom, and the first smoke baffle is rotationally connected to the box body in the mode that the first smoke baffle can rotate around the axis extending left and right; the movement mechanism is provided with a first power output end used for being connected with the first smoke barrier and a second power output end used for being connected with the second smoke barrier, and the movement mechanism can transmit power to the first smoke barrier and the second smoke barrier at the same time, so that the first smoke barrier and the second smoke barrier can deflect front and back relative to the box body at the same time; when the smoke barrier assembly is in the initial opening process, the opening angle of the first smoke barrier relative to the box body is larger than the opening angle of the second smoke barrier relative to the box body. The smoke deflector assembly has the advantages that the opening angle of the smoke deflector assembly is reasonable, and the smoke deflector assembly can be stably kept in an open state.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. A range hood generally includes a housing, a fan system, and a smoke baffle. For example, a range hood disclosed in a Chinese patent with application number CN202020176183.3 includes a housing provided with a main air inlet, an air suction device installed on the housing, and an oil cup arranged at the bottom of the housing. The housing is also provided with an auxiliary air inlet spaced apart from the main air inlet, and a panel capable of opening and closing the auxiliary air inlet is pivotally connected to the housing, and the auxiliary air inlet includes a plurality of second mesh holes arranged in an array. In order to allow the air inlet to cover a larger area, the entire front panel is designed to be flippable to form a thin range hood with a light and thin appearance. However, this type of range hood has the following problems: 1. In order to prevent the panel from blocking the view when the range hood is working and to avoid the problem of pot hitting, the panel needs to be flipped open at a certain angle. However, controlling the flipping angle will result in a smaller smoke collecting area of ​​the range hood and a poor fume extraction effect. 2. In order to improve the fume extraction effect, when the flipping angle of the panel is increased, the distance between the smoke shield and the person becomes smaller, which blocks the view and gives the customer a sense of oppression.

[0003] In order to solve the above technical problems, a Chinese utility model patent application with application number CN202121082332.0 (authorization announcement number: CN215863591U) discloses a range hood, including a housing, an air inlet is formed on the front side of the housing, a smoke baffle assembly capable of opening or closing the air inlet is provided on the front side of the housing, and the smoke baffle assembly includes a first smoke baffle and a second smoke baffle arranged up and down, the first smoke baffle is rotatably connected to the housing and the second smoke baffle respectively, and the rotation axes of the first smoke baffle and the second smoke baffle extend in the left and right directions. By providing two smoke baffles rotatably connected to each other, the movement trajectory of oil smoke after entering the smoke gathering area can be effectively improved. While increasing the smoke gathering area, the curve of oil smoke entering the air inlet is made smoother, which can effectively improve the oil smoke extraction effect. After the range hood is turned on, the distance between the overall range hood and the user becomes larger, and the risk of blocking the line of sight becomes smaller.

[0004] However, the above-mentioned range hood with a two-stage smoke baffle assembly still has certain shortcomings. The power output end of the motion mechanism used to drive the action of the smoke baffle assembly in the patent application only acts on the first smoke baffle or the second smoke baffle, that is, one of the smoke baffles drives the other smoke baffle to move. This driving method makes the second smoke baffle basically in a vertical state or with a relatively small inclination angle after the smoke baffle assembly is finally opened. Although it avoids the problem of hitting the pot and blocking the line of sight, in the case of rapid rising of oil smoke, the purpose of collecting smoke cannot be achieved due to the small opening inclination angle of the second smoke baffle, resulting in the problem of oil smoke escaping in some cooking scenes. On the other hand, since the power output end of the motion mechanism only acts on one smoke baffle, the smoke baffle assembly in the open state is also not reliable, especially in the state of large air volume, and is prone to shaking. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood with a smoke baffle assembly having a reasonable opening angle and capable of being stably maintained in an open state without the problem of shaking.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a range hood, comprising:

[0007] A box body having an air inlet at the front;

[0008] a smoke shield assembly, arranged at the front of the box body and capable of opening and closing the air inlet, the smoke shield assembly comprising a first smoke shield and a second smoke shield arranged in sequence from top to bottom, the first smoke shield being rotatably connected to the box body in a manner that allows it to rotate around an axis extending left and right, and the upper edge of the second smoke shield being rotatably connected to the lower edge of the first smoke shield in a manner that allows it to rotate around an axis extending left and right;

[0009] A motion mechanism having a first power output end connected to the first smoke baffle and a second power output end connected to the second smoke baffle, the motion mechanism can simultaneously transmit power to the first smoke baffle and the second smoke baffle, so that the first smoke baffle and the second smoke baffle can simultaneously deflect forward and backward relative to the box body, wherein, when the smoke baffle assembly is in the initial opening process, the opening angle of the first smoke baffle relative to the box body is greater than the opening angle of the second smoke baffle relative to the box body.

[0010] As an improvement, the movement mechanism includes a driving member and a connecting rod assembly, the connecting rod assembly includes a first connecting rod, a second connecting rod and a third connecting rod, the first end of the first connecting rod is connected to the driving member and can swing back and forth under the drive of the driving member, the second end of the first connecting rod is rotatably connected to the first end of the second connecting rod with a straight line extending left and right as a rotation axis, the second end of the second connecting rod is rotatably connected to the second smoke shield with a straight line extending left and right as a rotation axis, the first end of the third connecting rod is rotatably connected to the middle part of the second connecting rod with a straight line extending left and right as a rotation axis, and the second end of the third connecting rod is rotatably connected to the first smoke shield with a straight line extending left and right as a rotation axis;

[0011] The second end of the third connecting rod constitutes the first power output end of the motion mechanism, and the second end of the second connecting rod constitutes the second power output end of the motion mechanism.

[0012] In order to realize the installation of the connecting rod assembly and the first smoke shield and the second smoke shield, a first mounting bracket is provided on the back of the first smoke shield, and a second mounting bracket is provided on the back of the second smoke shield. The second end of the third connecting rod is rotatably connected to the first mounting bracket, and the second end of the second connecting rod is rotatably connected to the second mounting bracket.

[0013] Generally speaking, the rotational connection point between the second connecting rod and the second smoke baffle can be fixed, but in order to ensure that when the smoke baffle assembly is opened to the extreme position, the angle between the first smoke baffle and the second smoke baffle can continue to increase and tend to 180°, thereby moving the smoke collecting area of ​​the smoke baffle assembly forward and further reducing the problem of oil smoke escape, the second mounting bracket is provided with a slide extending in the up and down directions, and the second end of the second connecting rod is provided with a pin shaft, and the pin shaft is slidably constrained in the slide way.

[0014] As an improvement, when the smoke shield assembly is in a closed state, the pin on the second connecting rod is located at the lower end of the slide, and when the smoke shield assembly is opened to the extreme position, the pin on the second connecting rod slides from bottom to top along the slide to the upper end of the slide, thereby forming a complete plate structure extending on the same plane.

[0015] As an improvement, the driving member is a driving motor, and the output shaft of the driving motor is drivingly connected to the first end of the first connecting rod, thereby driving the first connecting rod to deflect forward and backward with its first end as the rotation center.

[0016] In order to adapt to the movement trajectory of the connecting rod assembly, the box body includes a top plate and a rear side wall, and the driving member is arranged on the top plate or the rear side wall.

[0017] In order to ensure the overall aesthetics of the range hood when it is turned off, the housing also includes a front panel, the air inlet is arranged on the front panel, and the smoke baffle assembly covers the entire front panel and closes the air inlet when it is turned off.

[0018] As an improvement, the box body further comprises a front panel, and the front panel is provided with a clearance opening for the connecting rod assembly to pass through.

[0019] As an improvement, the box body also includes a front panel, which is vertically extended. When the smoke baffle assembly is in a closed state, the first smoke baffle and the second smoke baffle are also vertically extended, thereby forming a complete smoke baffle structure.

[0020] In order to realize the rotational connection between the first smoke shield and the second smoke shield, a fourth mounting bracket is further provided on the back side of the first smoke shield, and the fourth mounting bracket has a first connecting plate extending to the lower edge of the first smoke shield. A fifth mounting bracket is further provided on the back side of the second smoke shield, and the fifth mounting bracket has a second connecting plate extending to the upper edge of the second smoke shield. The first connecting plate is rotatably connected to the second connecting plate.

[0021] In order to ensure the stability of the rotation process between the first smoke shield and the second smoke shield, the fourth mounting bracket has at least two arranged in sequence in the left and right directions, and the fifth mounting bracket also has at least two corresponding ones.

[0022] Compared with the prior art, the advantages of the utility model are as follows: since the motion mechanism acts on the first smoke baffle and the second smoke baffle respectively through two power output ends, the initial opening angle of the two smoke baffles can be controlled. When the smoke baffle assembly is opened to a certain set position (such as the lower edge of the second smoke baffle is close to the cooker), the opening angle of the first smoke baffle is greater than the opening angle of the second smoke baffle, that is, the smoke baffle is a bent plate structure as a whole, thereby avoiding the second smoke baffle from extending forward at this position as much as possible, so that the smoke baffle assembly can smoothly pass over the cooker when opened to avoid interference; on the other hand, since the first smoke baffle and the second smoke baffle are both connected to the motion mechanism, they are relatively firm in the open state and are not prone to shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the range hood according to Embodiment 1 of the present utility model;

[0024] Figure 2 This is a left side view of the range hood of Example 1 of the utility model (the left side wall of the box is omitted);

[0025] Figure 3This is a left side view of the range hood of Example 2 of the utility model (the left side wall of the box is omitted, and the smoke baffle assembly is in an initially opened state);

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the range hood according to an embodiment of the utility model (the left side wall of the box is omitted);

[0027] Figure 5 It is a left side view of the range hood of Example 2 of the utility model (the left side wall of the box is omitted, and the smoke baffle assembly is opened to the extreme position). DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0030] Example 1

[0031] Figure 1-Figure 2 A preferred embodiment of the utility model is shown, the range hood includes a housing 10, a fan system 50, a smoke baffle assembly and a motion mechanism for driving the smoke baffle assembly to open and close. The fan system 50 is arranged in the housing 10, and generally adopts a centrifugal fan. The housing 10 includes a front panel 11, a rear side wall 13, a left side wall (not shown), a right side wall (not shown), a bottom plate (not shown) and a top plate 12, and the front panel 11 is opposite to the rear side wall 13 in the front-to-back direction. The front panel 11 is basically arranged vertically, and an air inlet 110 is opened on it, and the air inlet port of the fan system 50 arranged in the housing 10 is opposite to the air inlet 110 on the front panel 11.

[0032] An oil cup 60 extending left and right is also provided on the rear side of the bottom plate of the box body 10, and the oil cup 60 is used to collect the oil stains dripping from the body.

[0033] See also Figure 1The smoke baffle assembly is arranged at the front of the box body 10, and specifically includes a first smoke baffle 21 and a second smoke baffle 22 arranged sequentially from top to bottom. The top of the first smoke baffle 21 is rotatably connected to the box body 10, and the second smoke baffle 22 is rotatably connected to the lower part of the first smoke baffle 21. Specifically, the first smoke baffle 21 is rotatably connected to the top plate 12 of the box body 10 with the axis extending left and right as the rotation center, and the upper edge of the second smoke baffle 22 is rotatably connected to the lower edge of the first smoke baffle 21. When the smoke baffle assembly is in a closed state, the first smoke baffle 21 and the second smoke baffle 22 both extend vertically, thereby forming a complete cover plate, covering the front panel 11 of the box body 10, and closing the air inlet 110 on the front panel 11 at the same time.

[0034] See also Figure 3 A third mounting bracket 33 is provided on the bottom wall of the top plate 12 of the box body 10 (i.e., a side wall facing the inside of the box body 10), and the back of the first smoke baffle 21 is rotatably connected to the third mounting bracket 33 at a position adjacent to the upper edge thereof through a hinge 35. Specifically, a first mounting bracket 31 is provided on the back of the first smoke baffle 21, and the hinge 35 is connected to the first mounting bracket 31.

[0035] A fourth mounting bracket 36 is also provided on the back of the first smoke baffle 21, and the fourth mounting bracket 36 has a first connecting plate 360 ​​extending to the lower edge of the first smoke baffle 21. A fifth mounting bracket 37 is also provided on the back of the second smoke baffle 22, and the fifth mounting bracket 37 has a second connecting plate 370 extending to the upper edge of the second smoke baffle 22, wherein the first connecting plate 360 ​​and the second connecting plate 370 are rotatably connected by a connecting shaft extending left and right, and the position where the two are rotatably connected corresponds to the position where the lower edge of the first smoke baffle 21 and the upper edge of the second smoke baffle 22 are connected. Further, in order to ensure the reliability of the rotatable connection between the first smoke baffle 21 and the second smoke baffle 22, the fourth mounting bracket 36 of this embodiment has two arranged in sequence in the left and right directions, and the fifth mounting bracket 37 also has two corresponding ones.

[0036] The motion mechanism includes a driving member 40 and a connecting rod assembly. The driving member 40 is a driving motor, which is fixed to the bottom wall of the top plate 12 of the box body 10 through a bracket. The connecting rod assembly includes a first connecting rod 41, a second connecting rod 42 and a third connecting rod 43. The first end of the first connecting rod 41 is connected to the output shaft of the driving motor and can swing back and forth under the drive of the driving motor. The second end of the first connecting rod 41 is rotatably connected to the first end of the second connecting rod 42 through a rotating shaft extending left and right, and the second end of the second connecting rod 42 is rotatably connected to the second smoke baffle 22 through a rotating shaft extending left and right. Specifically, a second mounting bracket 32 ​​is provided on the back of the second smoke baffle 22, and the second end of the second connecting rod 42 is rotatably connected to the second mounting bracket 32. The first end of the third connecting rod 43 is rotatably connected to the middle part of the second connecting rod 42 through a rotating shaft extending left and right, and the second end of the third connecting rod 43 is rotatably connected to the first mounting bracket 31 on the back of the first smoke baffle 21 through a rotating shaft extending left and right. The second end of the third connecting rod 43 constitutes the first power output end of the motion mechanism, and the second end of the second connecting rod 42 constitutes the second power output end of the motion mechanism.

[0037] The front panel 11 of the box body 10 is also provided with a clearance opening 111 extending in the up and down direction for the above-mentioned connecting rod assembly to pass through, wherein the clearance opening 111 is located on the side of the front panel 11 in the left and right directions, that is, avoiding the air inlet 110 located in the middle position of the front panel 11.

[0038] When the driving motor rotates forward and backward, the driving motor transmits power to the first smoke baffle 21 and the second smoke baffle 22 through the connecting rod assembly. Since the motion mechanism acts on the first smoke baffle 21 and the second smoke baffle 22 respectively through two power output ends, the initial opening angle of the two smoke baffles can be controlled. When the smoke baffle assembly is opened to a certain set position (such as the lower edge of the second smoke baffle 22 is close to the cookware), the opening angle of the first smoke baffle 21 is greater than the opening angle of the second smoke baffle 22, that is, the smoke baffle is a bent plate structure as a whole, so that the second smoke baffle 22 can be avoided from extending forward at this position as much as possible, so that the smoke baffle assembly can smoothly pass over the cookware when opened to avoid interference. On the other hand, since the first smoke baffle 21 and the second smoke baffle 22 are both connected to the motion mechanism, they are relatively firm in the open state and are not prone to shaking problems.

[0039] Example 2

[0040] See also Figure 3-Figure 5The difference between this embodiment and the first embodiment is that the rotation connection point between the second connecting rod 42 and the second smoke baffle 22 is not fixed but movable. Specifically, the second mounting bracket 32 ​​is provided with a slideway 320 extending in the up-down direction, that is, the extension direction of the slideway 320 is substantially consistent with the width direction of the second smoke baffle 22. A pin 420 is provided at the second end of the second connecting rod 42, and the pin 420 can be slidably constrained in the slideway 320. When the smoke damper assembly is in a closed state and when it is initially opened, the pin 420 on the second connecting rod 42 is located at the lower end of the slide 320. When the smoke damper assembly is opened to a position close to the limit, the pin 420 on the second connecting rod 42 slides from bottom to top along the slide 320 to the upper end of the slide 320, thereby enabling the second smoke damper 22 to be further opened relative to the first smoke damper 21, that is, the first smoke damper 21 and the second smoke damper 22 can form a complete plate structure extending on the same plane. This can further move the smoke gathering area of ​​the smoke damper assembly forward and effectively reduce the problem of oil smoke escape.

[0041] In addition, to match the movement process of the connecting rod assembly of this embodiment, the driving motor is connected to the rear side wall 13 of the box body 10 through a bracket.

Claims

1. A range hood, comprising: The box body (10) has an air inlet (110) at the front; A smoke shield assembly is arranged at the front of the box body (10) and is capable of opening and closing the air inlet (110), the smoke shield assembly comprising a first smoke shield (21) and a second smoke shield (22) which are arranged in sequence from top to bottom, the first smoke shield (21) being rotatably connected to the box body (10) in a manner that allows it to rotate around an axis extending left and right, and the upper edge of the second smoke shield (22) being rotatably connected to the lower edge of the first smoke shield (21) in a manner that allows it to rotate around an axis extending left and right; The invention is characterized in that it also includes: A motion mechanism having a first power output end connected to the first smoke baffle (21) and a second power output end connected to the second smoke baffle (22), the motion mechanism being capable of simultaneously transmitting power to the first smoke baffle (21) and the second smoke baffle (22), so that the first smoke baffle (21) and the second smoke baffle (22) can simultaneously deflect forward and backward relative to the box body (10), wherein, when the smoke baffle assembly is in the initial opening process, the opening angle of the first smoke baffle (21) relative to the box body (10) is greater than the opening angle of the second smoke baffle (22) relative to the box body (10).

2. The range hood according to claim 1, characterized in that: The motion mechanism comprises a driving member (40) and a connecting rod assembly, wherein the connecting rod assembly comprises a first connecting rod (41), a second connecting rod (42) and a third connecting rod (43), wherein the first end of the first connecting rod (41) is connected to the driving member (40) and can swing back and forth under the drive of the driving member (40), the second end of the first connecting rod (41) and the first end of the second connecting rod (42) are rotationally connected with a straight line extending left and right as a rotation axis, the second end of the second connecting rod (42) and the second smoke baffle (22) are rotationally connected with a straight line extending left and right as a rotation axis, the first end of the third connecting rod (43) and the middle part of the second connecting rod (42) are rotationally connected with a straight line extending left and right as a rotation axis, and the second end of the third connecting rod (43) and the first smoke baffle (21) are rotationally connected with a straight line extending left and right as a rotation axis; The second end of the third connecting rod (43) constitutes the first power output end of the motion mechanism, and the second end of the second connecting rod (42) constitutes the second power output end of the motion mechanism.

3. The range hood according to claim 2, characterized in that: A first mounting bracket (31) is provided on the back of the first smoke shield (21), a second mounting bracket (32) is provided on the back of the second smoke shield (22), a second end of the third connecting rod (43) is rotatably connected to the first mounting bracket (31), and a second end of the second connecting rod (42) is rotatably connected to the second mounting bracket (32).

4. The range hood according to claim 3, characterized in that: The second mounting bracket (32) is provided with a slideway (320) extending in the up-down direction, and the second end of the second connecting rod (42) is provided with a pin shaft (420), and the pin shaft (420) is slidably constrained in the slideway (320).

5. The range hood according to claim 4, characterized in that: When the smoke shield assembly is in a closed state, the pin shaft (420) on the second connecting rod (42) is located at the lower end of the slideway (320); when the smoke shield assembly is opened to the extreme position, the pin shaft (420) on the second connecting rod (42) slides from bottom to top along the slideway (320) to the upper end of the slideway (320), thereby forming a complete plate structure extending on the same plane.

6. The range hood according to claim 2, characterized in that: The driving member (40) is a driving motor, the output shaft of which is drivingly connected to the first end of the first connecting rod (41), thereby driving the first connecting rod (41) to deflect forward and backward with its first end as the rotation center.

7. The range hood according to claim 2, characterized in that: The box body (10) comprises a top plate (12) and a rear side wall (13), and the driving member (40) is arranged on the top plate (12) or the rear side wall (13).

8. The range hood according to claim 2, characterized in that: The box body (10) further comprises a front panel (11), the air inlet (110) being arranged on the front panel (11), and the smoke shield assembly, in a closed state, covers the entire front panel (11) and closes the air inlet (110).

9. The range hood according to claim 2, characterized in that: The box body (10) further comprises a front panel (11), and the front panel (11) is provided with a clearance opening (111) for the connecting rod assembly to pass through.

10. The range hood according to claim 1, characterized in that: The box body (10) further comprises a front panel (11), wherein the front panel (11) is vertically extended. When the smoke baffle assembly is in a closed state, the first smoke baffle (21) and the second smoke baffle (22) are also vertically extended, thereby forming a complete smoke baffle structure.

11. The range hood according to any one of claims 1 to 10, characterized in that: A fourth mounting bracket (36) is also provided on the back of the first smoke shield (21), and the fourth mounting bracket (36) has a first connecting plate (360) extending to the lower edge of the first smoke shield (21). A fifth mounting bracket (37) is also provided on the back of the second smoke shield (22), and the fifth mounting bracket (37) has a second connecting plate (370) extending to the upper edge of the second smoke shield (22). The first connecting plate (360) is rotatably connected to the second connecting plate (370).

12. The range hood according to claim 11, characterized in that: The fourth mounting bracket (36) has at least two arranged in sequence in the left-right direction, and the fifth mounting bracket (37) also has at least two corresponding ones.

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