Range hood

Abstract

The utility model relates to a range hood, which comprises a box body, an air inlet and an air outlet, the smoke barrier assembly is arranged on the front portion of the box body and can open and close the air inlet, the smoke barrier assembly comprises a first smoke barrier and a second smoke barrier which are sequentially arranged from top to bottom, the first smoke barrier is rotationally connected to the box body in the mode that the first smoke barrier can rotate around the axis extending leftwards and rightwards, and the second smoke barrier is rotationally connected to the box body in the mode that the second smoke barrier can rotate around the axis extending leftwards and rightwards. The upper edge of the second smoke barrier is rotatably connected to the lower edge of the first smoke barrier in a manner of rotating around an axis extending left and right; a flexible shielding piece is arranged on the back face of at least one of the first smoke barrier and the second smoke barrier, and the flexible shielding piece extends and shields a gap between the first smoke barrier and the second smoke barrier. The smoke blocking device has the advantages that after the gap between the two smoke blocking plates is blocked by the flexible blocking piece, smoke is prevented from escaping from the gap between the two smoke blocking plates, and the use experience of a user is improved.

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. When it is turned open, there will inevitably be a gap between the lower edge of the first smoke baffle and the upper edge of the second smoke baffle. In this way, the rising smoke will leak from the gap when flowing to the gap between the two smoke baffles, causing smoke leakage problems and affecting the user experience. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood capable of effectively avoiding the problem of smoke leakage at the rotating connection gap of the smoke baffle assembly in view of the current status of the prior art.

[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 flexible shielding member is provided on the back side of at least one of the first smoke shield and the second smoke shield. The flexible shielding member extends and shields the gap between the first smoke shield and the second smoke shield.

[0010] Generally speaking, there can be one flexible shielding member, that is, it is separately arranged on the first smoke shield or the second smoke shield, or there can be two flexible shielding members, that is, the two flexible shielding members are respectively arranged on the first smoke shield and the second smoke shield. When the smoke shield assembly is opened, the flexible shielding member on the first smoke shield is abutted against the flexible shielding member on the second smoke shield to block the gap between the two smoke shields. Preferably, the flexible shielding member is arranged on the back side of the first smoke shield, and partially extends to the lower edge of the first smoke shield, contacting the back side of the upper edge of the second smoke shield.

[0011] The flexible shielding member may be a flexible rubber member, a sponge or other deformable member. Preferably, in order to achieve the function of sound absorption and noise reduction, the flexible shielding member is a sponge.

[0012] In order to further ensure the noise reduction effect, a protective cover is also provided on the back of the first smoke shield, and the protective cover and the back of the first smoke shield together define a noise reduction chamber. The main body of the sponge is arranged in the noise reduction chamber, and the protective cover is also provided with noise reduction holes that are connected with the noise reduction chamber.

[0013] As an improvement, the side of the noise reduction chamber facing the lower edge of the first smoke baffle has an opening for the sponge to extend out.

[0014] In order to ensure the smoke-collecting effect, especially to adapt to the flexible shielding member and ensure its sealing effect at the gap between the two smoke baffles, when the smoke baffle assembly is in an open state, 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, so that the smoke baffle assembly as a whole has a bent plate structure.

[0015] In order to drive the smoke baffle assembly to open and avoid the interference between the smoke baffle assembly and the cookware during the opening process, it also includes:

[0016] 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.

[0017] 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;

[0018] 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.

[0019] 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.

[0020] 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.

[0021] In order to further ensure the aesthetics of the smoke shield assembly when it is in a closed state, the box body also includes a front panel, which is vertically extended. When the smoke shield assembly is in a closed state, the first smoke shield and the second smoke shield are also vertically extended, thereby forming a complete smoke shield structure.

[0022] 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.

[0023] 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.

[0024] Compared with the prior art, the utility model has the following advantages: after the two smoke shields of the smoke shield assembly are opened relative to the box body, the flexible shielding member arranged on the back of at least one of the two smoke shields can extend and shield the gap between the first smoke shield and the second smoke shield, preventing smoke from escaping from the gap between the two smoke shields, thereby improving the user experience. In the preferred embodiment, the sponge in the noise reduction chamber arranged on the back of the smoke shield is used as a flexible shielding member, which achieves the purpose of shielding and sealing (the gap between the two smoke shields) while also realizing the function of sound absorption and noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of a range hood according to an embodiment of the utility model;

[0026] Figure 2 This is a left side view of the range hood of the embodiment of the utility model (the left side wall of the box is omitted);

[0027] Figure 3 It is a three-dimensional structural schematic diagram of the range hood of the embodiment of the utility model from another angle;

[0028] Figure 4 It is a vertical cross-sectional view of the range hood according to an embodiment of the utility model cut along the front-to-back direction. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] 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.

[0031] Figure 1-Figure 4 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 receive the oil stains dripping from the box body 10 .

[0033] See also Figure 1 The 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 2 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] See also Figure 4 Generally, when the smoke baffle assembly is in the open state, there will be a gap 20 between the lower edge of the first smoke baffle 21 and the upper edge of the second smoke baffle 22. In order to prevent the fumes from escaping here, a flexible shielding member 71 is further provided on the back of the first smoke baffle 21 of the present embodiment, wherein the flexible shielding member 71 is selected to be a sponge. A protective cover 72 is further provided on the back of the first smoke baffle 21. The protective cover 72 and the back of the first smoke baffle 21 jointly define a noise reduction chamber 73 extending in the left and right directions. The noise reduction chamber 73 has an opening 74 on the side facing the lower edge of the first smoke baffle 21, and the main body of the sponge is arranged in the noise reduction chamber 73, and a part of it extends through the above-mentioned opening 74 and contacts with the upper edge of the second smoke baffle 22. More specifically, when the smoke baffle assembly is in the open state, 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, and the angle between the first smoke baffle 21 and the second smoke baffle 22 is basically an obtuse angle, that is, the smoke baffle assembly as a whole is a bent plate structure. Since the opening angle of the second smoke baffle 22 relative to the box body 10 is smaller than the opening angle of the first smoke baffle 21 relative to the box body 10, the second smoke baffle 22 will also squeeze the sponge to a certain extent, further ensuring the sealing effect of the sponge at the gap 20 between the two smoke baffles, and preventing smoke from leaking there. The protective cover 72 is also distributed with noise reduction holes 720 that are connected to the noise reduction chamber 73, which are combined with the sponge 71 in the noise reduction chamber 73 on the back of the smoke baffle to achieve the sound absorption and noise reduction function.

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: a flexible shielding member (71) is provided on the back side of at least one of the first smoke shield (21) and the second smoke shield (22), and the flexible shielding member (71) extends and shields the gap (20) between the first smoke shield (21) and the second smoke shield (22).

2. The range hood according to claim 1, characterized in that: The flexible shielding member (71) is arranged on the back side of the first smoke shield (21), and partially extends to the lower edge of the first smoke shield (21) to contact the back side of the upper edge of the second smoke shield (22).

3. The range hood according to claim 2, characterized in that: The flexible shielding member (71) is a sponge.

4. The range hood according to claim 3, characterized in that: A protective cover (72) is also provided on the back of the first smoke baffle (21), and the protective cover (72) and the back of the first smoke baffle (21) together define a noise reduction chamber (73), the main body of the sponge is arranged in the noise reduction chamber (73), and noise reduction holes (720) that are connected to the noise reduction chamber (73) are also distributed on the protective cover (72).

5. The range hood according to claim 4, characterized in that: The noise reduction chamber (73) has an opening (74) on one side facing the lower edge of the first smoke baffle (21) for the sponge to extend out.

6. The range hood according to claim 1, characterized in that: When the smoke baffle assembly is in an open state, 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), so that the smoke baffle assembly as a whole presents a bent plate structure.

7. The range hood according to any one of claims 1 to 6, characterized in that 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).

8. The range hood according to claim 7, 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.

9. The range hood according to claim 8, 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.

10. The range hood according to any one of claims 1 to 6, 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).

11. The range hood according to any one of claims 1 to 6, 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.

12. The range hood according to any one of claims 1 to 6, 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).

13. The range hood according to claim 12, 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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