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 comprises a first smoke barrier and a second smoke barrier which are sequentially arranged from top to bottom; the power output end of the driving part acts on the second smoke barrier, so that the second smoke barrier and the first smoke barrier can be driven to deflect front and back relative to the box body; the limiting piece is connected between the box body and the first smoke barrier and used for limiting the opening angle of the first smoke barrier relative to the box body; the damping part allows the second smoke barrier to continue to deflect forwards relative to the first smoke barrier after the first smoke barrier and the second smoke barrier are opened together to a set angle, so that the smoke barrier assembly has the following open state that the opening angle of the second smoke barrier relative to the box body is larger than the opening angle of the first smoke barrier relative to the box body. The range hood has the advantages that the problem of interference with cookware in the opening process can be avoided, and the smoke gathering area can be enlarged as much as possible in the opening state, so that the lampblack escape problem is reduced.

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 for purifying the kitchen environment. A range hood generally includes a box body, a fan system and a smoke baffle. For example, a range hood disclosed in a Chinese patent with the application number 202020176183.3 includes a housing provided with a main air inlet, a suction device installed on the housing and an oil cup provided at the bottom of the housing. The housing is also provided with an auxiliary air inlet spaced from the main air inlet, and a panel that can open and close the auxiliary air inlet is pivotally connected to the housing. The auxiliary air inlet includes a plurality of second mesh holes arranged in an array. In order to enable the air inlet to cover a larger area, the entire front panel is designed to be flip-up, forming a thin range hood with a thin and light appearance. However, such a range hood has the following problems: 1. In order to prevent the panel from blocking the line of sight and avoid hitting the pot when the range hood is working, it is necessary to control the flipping angle of the panel. However, controlling the flipping angle will result in a smaller smoke-gathering area of the range hood and a poor smoke extraction effect; 2. In order to improve the smoke extraction effect, when the flipping angle of the panel is increased, the distance between the smoke baffle and the person will become smaller, blocking the line of sight and giving customers a sense of depression.

[0003] In order to solve the above technical problems, a Chinese utility model patent application with the application number CN202121082332.0 (the authorized publication number is: CN215863591U) discloses a range hood, including a box body, an air inlet is formed at the front side of the box body, and a smoke baffle assembly capable of opening or closing the air inlet is arranged at the front side of the box body. 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 box body and the second smoke baffle respectively, and the rotation axes of the first smoke baffle and the second smoke baffle extend in the left-right direction. By providing two mutually rotatable smoke baffles, the movement trajectory of the oil fume after entering the smoke-gathering area can be effectively improved. While increasing the smoke-gathering area, the curve of the oil fume entering the air inlet becomes smoother, which can effectively improve the smoke extraction effect. The overall distance between the range hood and the user becomes larger after it is opened, 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 deficiencies. After the smoke baffle assembly is finally opened, its second smoke baffle is basically in a vertical state or has a relatively small inclination angle. In this way, although the problems of hitting the pot and blocking the line of sight are avoided, in the case of rapid rise of oil fumes, due to the too small opening inclination angle of the second smoke baffle, the purpose of gathering oil fumes cannot be achieved, resulting in oil fume escape problems in some cooking scenarios. For example, when vegetables or water are just put into the pot, the amount of oil fumes is large and the rising speed is fast. Due to the relatively small oil fume gathering area, on the side of the pot edge far from the wall, the rising oil fumes will easily escape within a short time when the vegetables are put into the pot. Another example is when tossing the stir-fry pan away from the stove, the pot is far from the center of the stove, and the edge of the pot on the side far from the wall will exceed the lower edge of the second smoke baffle. When the suction force of the range hood is insufficient, it is also easy for the oil fumes to escape.

[0005] Therefore, the existing range hoods still need to be further improved. Summary of the Utility Model

[0006] The technical problem to be solved by the present utility model is to provide a range hood that can not only avoid interference with the cooking utensils during the opening process, but also can increase the oil fume gathering area as much as possible in the opened state so as to reduce the oil fume escape problem, in view of the current situation of the existing technology.

[0007] The technical solution adopted by the present utility model to solve the above technical problems is as follows:

[0008] A range hood, comprising:

[0009] A box body, which has an air inlet at its front part;

[0010] A smoke baffle assembly, which is arranged at the front part of the box body and can open and close the air inlet. The smoke baffle assembly includes a first smoke baffle and a second smoke baffle arranged in sequence from top to bottom. The first smoke baffle is rotatably connected to the box body with an axis extending left and right as the rotation center, and the upper edge of the second smoke baffle is rotatably connected to the lower edge of the first smoke baffle;

[0011] A driving member, which has a power output end, and the power output end of the driving member acts on the second smoke baffle, so as to drive the second smoke baffle and the first smoke baffle to deflect forward and backward relative to the box body;

[0012] A limiting member, which is connected between the box body and the first smoke baffle and is used to limit the opening angle of the first smoke baffle relative to the box body;

[0013] A damping member, which acts between the first smoke baffle and the second smoke baffle to increase the rotational resistance of the second smoke baffle relative to the first smoke baffle, so that after the first smoke baffle and the second smoke baffle can be opened together to a set angle, the second smoke baffle is allowed to continue to deflect forward relative to the first smoke baffle, and the smoke baffle assembly has the following opened state:

[0014] The opening angle of the second smoke baffle relative to the box body is greater than the opening angle of the first smoke baffle relative to the box body.

[0015] As an improvement, the damping member is a spring, the first end of which is connected to the first smoke baffle and the other end is connected to the second smoke baffle.

[0016] For the convenience of installing the spring, a first mounting bracket is provided on the back surface of the first smoke baffle, a second mounting bracket is provided on the back surface of the second smoke baffle, and the spring is connected between the first mounting bracket and the second mounting bracket.

[0017] Generally speaking, the above-mentioned limiting member can be a flexible rope, a spring or a connecting rod assembly. Preferably, the limiting member includes a first connecting rod and a second connecting rod. The first end of the first connecting rod is rotatably connected to the box body, the second end is rotatably connected to the first end of the second connecting rod, and the second end of the second connecting rod is rotatably connected to the first mounting bracket.

[0018] For the convenience of installing the first connecting rod on the box body, the box body includes a top plate, and the first end of the first connecting rod is connected to the bottom wall of the top plate.

[0019] As an improvement, the box body includes a top plate, and a third mounting bracket is provided on the bottom wall of the top plate. The first smoke baffle is rotatably connected to the third mounting bracket.

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

[0021] To ensure the stability of the rotation between the first smoke baffle and the second smoke baffle, at least two of the fourth mounting brackets are arranged in sequence in the left-right direction, and the fifth mounting brackets also correspondingly have at least two.

[0022] To ensure the aesthetics of the range hood in the shutdown state, the box body includes a front panel, the air inlet is provided on the front panel, and when the smoke baffle assembly is in the closed state, it covers the whole of the front panel.

[0023] Generally speaking, the driving member can adopt various motion mechanisms or electric push rods that can drive the first smoke baffle to deflect back and forth and are connected to a transmission assembly. Preferably, the driving member is an electric push rod, which has a telescopic rod that can perform linear expansion and contraction. The main body of the electric push rod is rotatably arranged on the rear side wall of the box body, and the end of the telescopic rod passes through the front panel and is rotatably connected to the back surface of the second smoke baffle.

[0024] Compared with the prior art, the advantages of the present utility model are as follows: Under the action of the damping member, the first smoke baffle and the second smoke baffle can deflect forward together. After the two deflect to a set angle, the first smoke baffle can be maintained at the set angle under the action of the limiting member (that is, it cannot continue to open forward), while the second smoke baffle can continue to deflect forward relative to the first smoke baffle under the drive of the driving member to a larger deflection angle. Since the first smoke baffle is restricted to a relatively small opening angle, during the process of the second smoke baffle continuing to open, the rotation radius of its lower edge is relatively small (compared with the entire smoke baffle in the prior art) and is far from the cookware, so the problem of hitting the pot will not occur. On this basis, the lower edge of the second smoke baffle can also extend forward as much as possible, increasing the smoke collection area and reducing the problem of oil fume escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural view of the range hood according to an embodiment of the present utility model (the smoke baffle assembly is in an open state);

[0026] Figure 2 is a left view of the range hood according to an embodiment of the present utility model (the smoke baffle assembly is in a state during the opening process, and the opening angles of the first smoke baffle and the second smoke baffle are the same);

[0027] Figure 3 is a left view of the range hood according to an embodiment of the present utility model (the smoke baffle assembly is in an open state);

[0028] Figure 4 is a three-dimensional structural view of the range hood according to an embodiment of the present utility model (the smoke baffle assembly is in an open state). DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The present utility model will be further described in detail below in conjunction with the embodiments of the drawings.

[0030] In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present utility model. However, the use of these terms herein is only for the purpose of convenient description and is determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed by the present utility model can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

[0031] Figures 1-4 Fig. shows a preferred embodiment of the present utility model. The range hood includes a box body 10, a fan system 60, and a smoke baffle assembly. The fan system 60 is disposed inside the box body 10, and generally a centrifugal fan is adopted. The box body 10 includes a front panel 11, a rear side wall 12, a left side wall (not shown), a right side wall (not shown), a bottom plate (not shown), and a top plate 13. The front panel 11 and the rear side wall 12 are opposite in the front-rear direction. The front panel 11 is basically vertically arranged, and an air inlet 110 is formed thereon. The air inlet port of the fan system 60 disposed inside the box body 10 is opposite to the air inlet 110 on the front panel 11.

[0032] At the rear side of the bottom plate of the box body 10, an oil cup 61 extending left and right is further provided, and the oil cup 61 is used to receive the oil stains dripping from the machine body.

[0033] See Figure 1 , the smoke baffle assembly is disposed at the front part of the box body 10, and specifically includes a first smoke baffle 21 and a second smoke baffle 22 arranged in sequence 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 13 of the box body 10 with an 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 the closed state, both the first smoke baffle 21 and the second smoke baffle 22 extend vertically, thereby forming a complete smoke baffle to cover the front panel 11 of the box body 10 and simultaneously close the air inlet 110 on the front panel 11.

[0034] See Figure 3, a third mounting bracket 33 is provided on the bottom wall of the top plate 13 of the box body 10 (i.e., the side wall facing the inside of the box body 10). An integrally arcuate connecting arm 36 is further provided on the back surface of the first smoke baffle 21 near its upper edge. The first end of the connecting wall is connected to the back surface of the first smoke baffle 21, and the second end is rotatably connected to the third mounting bracket 33 through a pin shaft extending left and right. Specifically, a first mounting bracket 31 is provided on the back surface of the first smoke baffle 21, and the first end of the above-mentioned connecting wall is connected to the first mounting bracket 31.

[0035] A fourth mounting bracket 34 is further provided on the back surface of the first smoke baffle 21. The fourth mounting bracket 34 has a first connecting plate extending to the lower edge of the first smoke baffle 21. A fifth mounting bracket 35 is further provided on the back surface of the second smoke baffle 22. The fifth mounting bracket 35 has a second connecting plate extending to the upper edge of the second smoke baffle 22. Among them, the first connecting plate and the second connecting plate are rotatably connected through a pin shaft extending left and right, and the position of their rotational connection is correspondingly located at the position where the lower edge of the first smoke baffle 21 is connected to the upper edge of the second smoke baffle 22. Further, in order to ensure the reliability of the rotational connection between the first smoke baffle 21 and the second smoke baffle 22, there are two fourth mounting brackets 34 arranged in sequence in the left-right direction in this embodiment, and there are also two corresponding fifth mounting brackets 35.

[0036] An electric push rod 40 (i.e., a driving member) is further provided in the box body 10. Driven by the electric push rod 40, the smoke baffle assembly approaches and moves away from the front panel 11 of the box body 10, so as to open the air inlet 110 on the front panel 11. The main body of the electric push rod 40 is installed on the rear side wall 12 of the box body 10 through a hinge seat 42, so that it can deflect downward or upward. The electric push rod 40 has a telescopic rod 41 that can move linearly. The telescopic rod 41 passes through the front panel 11 and is rotatably connected to the back surface of the second smoke baffle 22. Specifically, the installation position of the electric push rod 40 on the box body 10 is set on the left or right, so as to avoid interference with the main air inlet area of the front smoke baffle.

[0037] A second mounting bracket 32 is further provided on the back surface of the second smoke baffle 22. Among them, the end of the telescopic rod 41 of the electric push rod 40 is rotatably connected to the second mounting bracket 32, and the axis of relative rotation between the two extends in the left-right direction.

[0038] A limiting member is further provided between the box body 10 and the first smoke baffle 21 for limiting the opening angle of the first smoke baffle 21 relative to the box body 10. Specifically, the limiting member includes a first connecting rod 51 and a second connecting rod 52. The first end of the first connecting rod 51 is rotatably connected to the bottom wall of the top plate 13 of the box body 10, the second end is rotatably connected to the first end of the second connecting rod 52, and the second end of the second connecting rod 52 is rotatably connected to the first mounting bracket 31. The rotation axis of the first connecting rod 51 relative to the box body 10, the rotation axis of the first connecting rod 51 relative to the second connecting rod 52, and the rotation axis of the second connecting rod 52 relative to the first smoke baffle 21 all extend in the left-right direction. To simplify the installation structure, the second connecting rod 52 is rotatably connected to the pin shaft where the fourth mounting bracket 34 of the first smoke baffle 21 and the fifth mounting bracket 35 of the second smoke baffle 22 are rotatably connected.

[0039] A damping member is further provided between the first smoke baffle 21 and the second smoke baffle 22. Specifically, the damping member is preferably a spring 70. The first end of the spring 70 is connected to the first mounting bracket 31 on the back surface of the first smoke baffle 21, and the second end is connected to the second mounting bracket 32 on the back surface of the second smoke baffle 22. Among them, when the smoke baffle assembly is in the state of closing the front panel 11 of the box body 10, the first smoke baffle 21 and the second smoke baffle 22 extend in the same plane. At this time, the above spring 70 is in a natural state or a slightly stretched state. In this way, driven by the driving member, the first smoke baffle 21 and the second smoke baffle 22 can deflect forward together by the same angle.

[0040] The working process of the smoke baffle assembly of the range hood in this embodiment is as follows:

[0041] The electric push rod 40 is started, and the telescopic rod 41 extends. Under the action of the damping member, the first smoke baffle 21 and the second smoke baffle 22 can deflect forward together. After the two deflect to a set angle, the first smoke baffle 21 can be kept at the set angle under the action of the limiting member (that is, it cannot continue to open forward), and the second smoke baffle 22 can continue to deflect forward relative to the first smoke baffle 21 under the drive of the electric push rod 40 to a larger deflection angle. Since the first smoke baffle 21 is limited to a relatively small opening angle, during the process of the second smoke baffle 22 continuing to open, the rotation radius of its lower edge is relatively small (compared with the entire smoke baffle in the prior art) and is far from the cookware, so the problem of hitting the pot will not occur. On this basis, the lower edge of the second smoke baffle 22 can also extend forward as much as possible, increasing the smoke collection area and reducing the problem of oil fume escape.

Claims

1. An oil fume extractor, comprising: A box body (10) having an air inlet (110) at its front part; A smoke baffle assembly disposed at the front part of the box body (10) and capable of opening and closing the air inlet (110). The smoke baffle assembly includes a first smoke baffle (21) and a second smoke baffle (22) sequentially arranged from top to bottom. The first smoke baffle (21) is rotatably connected to the box body (10) with an 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); A driving member having a power output end, and the power output end of the driving member acts on the second smoke baffle (22) so as to drive the second smoke baffle (22) and the first smoke baffle (21) to deflect forward and backward relative to the box body (10); It is characterized by further comprising: A limiting member connected between the box body (10) and the first smoke baffle (21) for limiting the opening angle of the first smoke baffle (21) relative to the box body (10); A damping member acting between the first smoke baffle (21) and the second smoke baffle (22) to increase the rotational resistance of the second smoke baffle (22) relative to the first smoke baffle (21), so that after the first smoke baffle (21) and the second smoke baffle (22) are opened together to a set angle, the second smoke baffle (22) is allowed to continue to deflect forward relative to the first smoke baffle (21), and the smoke baffle assembly has the following open state: The opening angle of the second smoke baffle (22) relative to the box body (10) is greater than the opening angle of the first smoke baffle (21) relative to the box body (10).

2. The range hood according to claim 1, characterized in that: The damping member is a spring (70), and the first end of the spring (70) is connected to the first smoke baffle (21), and the other end is connected to the second smoke baffle (22).

3. The range hood according to claim 2, wherein: A first mounting bracket (31) is provided on the back surface of the first smoke baffle (21), a second mounting bracket (32) is provided on the back surface of the second smoke baffle (22), and the spring (70) is connected between the first mounting bracket (31) and the second mounting bracket (32).

4. The range hood according to claim 3, wherein: The limiting member includes a first connecting rod (51) and a second connecting rod (52). The first end of the first connecting rod (51) is rotatably connected to the box body (10), the second end is rotatably connected to the first end of the second connecting rod (52), and the second end of the second connecting rod (52) is rotatably connected to the first mounting bracket (31).

5. The range hood according to claim 4, characterized in that: The box body (10) includes a top plate (13), and the first end of the first connecting rod (51) is connected to the bottom wall of the top plate (13).

6. The range hood according to any one of claims 1 to 3, characterized in that: The box body (10) includes a top plate (13), and a third mounting bracket (33) is provided on the bottom wall of the top plate (13). The first smoke baffle (21) is rotatably connected to the third mounting bracket (33).

7. The range hood according to any one of claims 1 to 3, characterized in that: The back surface of the first smoke baffle (21) is further provided with a fourth mounting bracket (34), and the fourth mounting bracket (34) has a first connecting plate extending to the lower edge of the first smoke baffle (21). The back surface of the second smoke baffle (22) is further provided with a fifth mounting bracket (35), and the fifth mounting bracket (35) has a second connecting plate extending to the upper edge of the second smoke baffle (22). The first connecting plate is rotatably connected to the second connecting plate.

8. The range hood according to claim 7, wherein: There are at least two fourth mounting brackets (34) arranged in sequence in the left-right direction, and there are also at least two corresponding fifth mounting brackets (35).

9. The range hood according to any one of claims 1 to 3, characterized in that: The box body (10) includes a front panel (11), and the air inlet (110) is arranged on the front panel (11). When the smoke baffle assembly is in the closed state, it covers the whole of the front panel (11).

10. The range hood according to claim 9, wherein: The driving member is an electric push rod (40), and the electric push rod (40) has a telescopic rod (41) capable of linear telescopic movement. The main body of the electric push rod (40) is rotatably arranged on the rear side wall (12) of the box body (10), and the end of the telescopic rod (41) passes through the front panel (11) and is rotatably connected to the back surface of the second smoke baffle (22).

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