Range hood

Abstract

The application discloses a range hood, which comprises a box body, a first cover plate, a first transmission member, a driving member, a first structure part and a second structure part. The first transmission member comprises a first connecting rod, a second connecting rod, a third connecting rod and a push rod. The second connecting rod is rotationally connected with the first connecting part of the first connecting rod and the first structure part. The second connecting rod is connected with the first cover plate. The third connecting rod is rotationally connected with the second connecting part of the first connecting rod and the second structure part. The push rod is connected with the driving member and the third connecting rod. In the technical scheme, the connecting lines among the first connecting rod, the second connecting rod, the third connecting rod, the first structure part and the second structure part substantially form a four-connecting-rod mechanism. The push rod is connected between the driving member and the third connecting rod, the four-connecting-rod mechanism can be driven to operate through the push rod, and then the first cover plate can be closed or opened to the first smoke suction port, so that the four-connecting-rod mechanism and the driving member can be arranged in different areas, and the thinner design of the range hood can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical appliances, in particular to a range hood. BACKGROUND

[0002] The range hood works by using the principle of fluid dynamics, and the oil fume is sucked by the fan assembly installed in the inner cavity of the range hood. In order to ensure the cleanliness of the inner cavity, the range hood in the related art is provided with a cover plate which can open and close the smoke suction port, and an opening and closing mechanism which realizes the opening and closing of the cover plate. However, the range hood in the related art is designed unreasonably, resulting in a large size of the range hood. SUMMARY

[0003] The main purpose of the present application is to provide a range hood, which aims to solve the technical problem of the large size of the existing range hood.

[0004] In order to achieve the above purpose, the range hood provided by the present application comprises a box body, a first cover plate, a first transmission member, a driving member, a first structure part and a second structure part, the box body is formed with an inner cavity and a first smoke suction port communicated with the inner cavity, and the first cover plate is arranged corresponding to the first smoke suction port; the first structure part and the second structure part are arranged in the box body in a spaced manner, and the first transmission member comprises:

[0005] A first connecting rod comprising a first connecting part and a second connecting part arranged in a spaced manner;

[0006] A second connecting rod, one end of which is rotatably connected with the first connecting part, and the other end is rotatably connected with the first structure part; the second connecting rod is connected with the first cover plate;

[0007] A third connecting rod, one end of which is rotatably connected with the second connecting part, and the other end is rotatably connected with the second structure part; and

[0008] A push rod connected with the driving member and the third connecting rod, used for driving the third connecting rod to move under the driving of the driving member, so as to realize the switching of the first cover plate between a first position and a second position, the first cover plate closes the first smoke suction port in the first position, and the first cover plate opens the first smoke suction port in the second position.

[0009] In the technical scheme, the first connecting rod, the second connecting rod, the third connecting rod, the first structure part and the second structure part form a four-connecting-rod mechanism, the push rod is connected between the driving member and the third connecting rod, the four-connecting-rod mechanism can be driven to operate through the push rod, and then the first cover plate can be closed or opened to the first smoke suction port, compared with directly connecting the driving member and the four-connecting-rod mechanism, the arrangement direction between the driving member and the four-connecting-rod mechanism can be more diversified, and more use requirements can be met, for example, the four-connecting-rod mechanism and the driving member can be arranged in different areas, and the thinner design of the range hood can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0011] Figure 1 An embodiment of the range hood provided by the present application is shown in a perspective view when the first cover plate is in the first position and the second cover plate is in the second position.

[0012] Figure 2 An embodiment of the range hood provided by the present application is shown in a perspective view when the first cover plate is in the first position and the second cover plate is in the second position. Figure 1 An embodiment of the range hood provided by the present application is shown in a perspective view when the first cover plate is in the second position and the second cover plate is in the fourth position.

[0013] Figure 3 An embodiment of the range hood provided by the present application is shown in a perspective view when the first cover plate is in the second position and the second cover plate is in the fourth position. Figure 1 An embodiment of the range hood provided by the present application is shown in a perspective view of part of the structure when the first cover plate is in the second position and the second cover plate is in the fourth position.

[0014] Figure 4 An embodiment of the range hood provided by the present application is shown in a perspective view of part of the structure when the first cover plate is in the second position and the second cover plate is in the fourth position. Figure 1 An embodiment of the range hood provided by the present application is shown in a perspective view of part of the structure when the first cover plate is in the second position and the second cover plate is in the fourth position.

[0015] Figure 5 An embodiment of the range hood provided by the present application is shown in a perspective view of part of the structure when the first cover plate is in the second position and the second cover plate is in the fourth position. Figure 1 An embodiment of the range hood provided by the present application is shown in a projection view of the first smoke suction port, the second smoke suction port and the air inlet in the second plane.

[0016] Figure 6 An embodiment of the range hood provided by the present application is shown in a perspective view of part of the structure when the first cover plate is in the second position and the second cover plate is in the fourth position. Figure 1 An embodiment of the range hood provided by the present application is shown in a perspective view of part of the structure when the first cover plate is in the second position and the second cover plate is in the fourth position.

[0017] Figure 7 An embodiment of the range hood provided by the present application is shown in a perspective view of part of the structure when the first cover plate is in the second position and the second cover plate is in the fourth position. Figure 1 An embodiment of the range hood provided by the present application is shown in a perspective view of part of the structure when the first cover plate is in the second position and the second cover plate is in the fourth position.

[0018] Figure 8 A perspective view of a portion of the structure of another embodiment of the range hood provided by the present invention when the first cover plate is in the second position and the second cover plate is in the fourth position;

[0019] Figure 9 for Figure 8 A three-dimensional view of part of the structure of the range hood is shown.

[0020] Figure 10 for Figure 8 The diagram shows a partial structural view of the range hood when the first cover is in the first position and the second cover is in the third position.

[0021] Figure 11 for Figure 1 A perspective view of the transmission components and mounting bracket in the range hood is shown.

[0022] Figure 12 A perspective view of the first cover plate, the first mesh plate, and the connecting plate in another embodiment of the range hood provided by the present invention;

[0023] Figure 13 for Figure 12 The diagram shows a perspective view of the first cover plate, first mesh plate, connecting plate, second cover plate, and connecting structure of the range hood.

[0024] Figure 14 A perspective view of another embodiment of the range hood provided by the present invention when the first cover plate is in the first position and the second cover plate is in the second position;

[0025] Figure 15 for Figure 14 The image shown is a perspective view of the range hood with the first cover in the second position and the second cover in the fourth position.

[0026] Explanation of reference numerals: 1, range hood; 11, box body; 111, inner cavity; 112, first smoke suction port; 1121, second area; 113, second smoke suction port; 1131, third area; 114, ventilation port; 12, fan assembly; 121, rotation axis; 122, air inlet; 1221, first area; 123, front plate; 13, first cover plate; 131, first edge line; 132, second edge line; 133, third edge line; 134, first connecting piece; 1341, first piece body; 1342, second piece body; 141, first transmission member; 1411, first connecting rod; 14111, first surface; 1412, second connecting rod; 14121, avoidance interval; 1413, third connecting rod; 14131, second surface; 14132, third surface; 1414, push rod; 14141, first pushing part; 14142, second pushing part; 142, transmission rod; 1431, first connecting part; 1432, second connecting part; 1433, third connecting part; 1434, fourth connecting part; 1435, fifth connecting part; 1436, sixth connecting part; 1437, seventh connecting part; 1438, eighth connecting part; 144, second transmission member; 1441, sliding rail; 1442, sliding part; 14421, sliding block; 14422, first plate body; 14423, second plate body; 14424, first plate surface; 14425, second plate surface; 1443, fourth connecting rod; 1444, fifth connecting rod; 15, driving member; 16, second cover plate; 17, mounting frame; 171, first structure part; 172, second structure part; 173, limiting structure; 174, fourth surface; 175, fifth surface; 176, first part; 1761, first sub-surface; 1762, second sub-surface; 177, second part; 1771, third sub-surface; 1772, fourth sub-surface; 178, third part; 18, elastic member; 191, first mesh plate; 192, connecting plate; 193, smoke guide cavity; 194, second connecting piece; 1941, fourth piece body; 195, connecting structure; p, cooktop plane; a, second plane.

[0027] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0029] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications will also change accordingly.

[0030] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0031] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal communication of two elements or interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0033] Please refer to Figure 1 and Figure 2 The embodiments of the present application propose an extractor hood 1, which comprises a box body 11 and a fan assembly 12. The box body 11 is formed with an inner cavity 111 and a first smoke suction port 112 communicating with the inner cavity 111, and the fan assembly 12 is located in the inner cavity 111 and used to generate negative pressure suction force, so that oil fume can be sucked into the inner cavity 111 through the first smoke suction port 112, without causing the kitchen to be full of oil fume, thereby improving the user's experience when cooking.

[0034] The extractor hood 1 further comprises a first cover plate 13 arranged corresponding to the first smoke suction port 112, and the first cover plate 13 has a first position and a second position. In the first position, the first cover plate 13 closes the first smoke suction port 112, please refer to Figure 1 ; in the second position, the first cover plate 13 opens the first smoke suction port 112, please refer to Figure 2As shown, when the range hood 1 is idle, the first cover plate 13 can be in the first position to close the first smoke inlet 112, so as to avoid dust and the like from entering the inner cavity 111 of the cabinet 11 through the first smoke inlet 112, or avoid the fan assembly 12 from being exposed to damage. When the range hood 1 is working, the first cover plate 13 can be in the second position to open the first smoke inlet 112, so that the oil fume can be sucked into the inner cavity 111 through the first smoke inlet 112 after the fan assembly 12 is started.

[0035] Please refer to Figure 3 and Figure 4 The range hood 1 further comprises a first transmission member 141 and a driving member 15, the first transmission member 141 being connected to the driving member 15 and the first cover plate 13, and being configured to drive the first cover plate 13 to switch between the first position and the second position under the driving of the driving member 15.

[0036] Optionally, the first transmission member 141 can be configured to drive the first cover plate 13 to rotate relative to the opening end surface of the first smoke inlet 112 to close or open the first smoke inlet 112 when the driving member 15 is driven to move. That is, the first cover plate 13 is flipped to open and close the first smoke inlet 112, and compared with the first cover plate 13 being translated along a direction perpendicular to the opening central axis of the first smoke inlet 112 to open and close the first smoke inlet 112, the range hood 1 can be designed to be small in size.

[0037] For example, the inner plate surface of the first cover plate 13 has a first edge line 131 away from the cooktop plane p when in use, and the first cover plate 13 can be rotated about the first edge line 131 as the rotation axis to open and close the first smoke inlet 112. In this way, when in use, the range hood 1 is installed above the cooktop plane p, and the oil fume above the cooktop plane p in the second position can be blocked by the inner plate surface of the first cover plate 13 to enter the first smoke inlet 112, that is, the first cover plate 13 flipped to open can guide the transmission of the oil fume, and the smoke suction amount of the first smoke inlet 112 can be improved, and the use effect of the range hood 1 can be improved.

[0038] Optionally, please refer to Figure 6 and Figure 7, the range hood 1 can include a first structure 171 and a second structure 172 which are mounted in the cabinet 11 and are spaced apart. The first transmission member 141 can include a first connecting rod 1411, a second connecting rod 1412, a third connecting rod 1413 and a push rod 1414, the first connecting rod 1411 having a first connecting portion 1431 and a second connecting portion 1432 which are spaced apart. One end of the second connecting rod 1412 is rotatably connected to the first connecting portion 1431, and the other end is rotatably connected to the first structure 171. One end of the third connecting rod 1413 is rotatably connected to the second connecting portion 1432, and the other end is rotatably connected to the second structure 172. The second connecting rod 1412 is further connected to the first cover plate 13, and the push rod 1414 is connected to the third connecting rod 1413 and the driving member 15, for driving the third connecting rod 1413 and the second connecting rod 1412 to move under the driving of the driving member 15, so as to switch the first cover plate 13 between the first position and the second position.

[0039] Optionally, in an exemplary scheme, the push rod 1414 can be a telescopic rod, at this time, the push rod 1414 can be deformed by extension and contraction under the action of the driving member 15; for example, when the push rod 1414 is elongated, the push rod 1414 can push the third connecting rod 1413 to rotate around the second structure 172 in a first direction, and then make the second connecting rod 1412 rotate around the first structure 171 in a second direction, so as to open the first cover plate 13 to the first smoke inlet 112; while when the push rod 1414 is shortened, the push rod 1414 can pull the third connecting rod 1413 to rotate around the second structure 172 in the opposite direction of the first direction, and then make the second connecting rod 1412 rotate around the first structure 171 in the opposite direction of the second direction, so as to close the first cover plate 13 to the first smoke inlet 112. Wherein, the first connecting rod 1411, the second connecting rod 1412, the third connecting rod 1413 and the first structure 171 and the second structure 172 can substantially constitute a four-bar linkage mechanism.

[0040] In another exemplary scheme, the push rod 1414 can include a first pushing portion 14141 and a second pushing portion 14142, the third connecting rod 1413 can include a third connecting portion 1433, a fourth connecting portion 1434 and a fifth connecting portion 1435, the third connecting portion 1433, the fourth connecting portion 1434 and the fifth connecting portion 1435 are connected to form a triangle, the third connecting portion 1433 is rotatably connected with the second connecting portion 1432, the fourth connecting portion 1434 is rotatably connected with the second structure portion 172, and the fifth connecting portion 1435 is rotatably connected with one end of the first pushing portion 14141, the other end of the first pushing portion 14141 is rotatably connected with one end of the second pushing portion 14142, and the other end of the second pushing portion 14142 is connected with the driving member 15. Among them, the first pushing portion 14141, the second pushing portion 14142, the part of the third connecting rod 1413 between the fourth connecting portion 1434 and the fifth connecting portion 1435, and the part between the end of the second pushing portion 14142 connected with the driving member 15 and the second structure portion 172 can together form another four-bar linkage mechanism. That is, the first transmission member 141 is roughly composed of two four-bar linkage mechanisms, and the two four-bar linkage mechanisms share the third connecting rod 1413, so as to simplify the structural design of the first transmission member 141 and facilitate assembly.

[0041] Optionally, the third connecting rod 1413 can be roughly triangular, and the third connecting portion 1433, the fourth connecting portion 1434 and the fifth connecting portion 1435 can be respectively arranged corresponding to the three corners of the triangle. Optionally, a triangular hole can be roughly formed in the third connecting rod 1413, and the third connecting portion 1433, the fourth connecting portion 1434 and the fifth connecting portion 1435 can be respectively arranged corresponding to the three corners of the triangular hole. Optionally, referring to Figure 8 to Figure 10 , the third connecting rod 1413 can also be roughly in the shape of a curved knife, and the specific shape of the third connecting rod 1413 is not limited in the embodiments of the present application.

[0042] Optionally, the second connecting rod 1412 can be roughly in the shape of a hook; specifically, the second connecting rod 1412 forms an avoiding interval 14121. In this way, when the first transmission member 141 drives the first cover plate 13 to flip open, the avoiding interval 14121 of the second connecting rod 1412 can avoid the box body 11, so that the movement of the first transmission member 141 is more smooth.

[0043] Optionally, the second connecting rod 1412 can be connected to the first cover plate 13 by the first connecting sheet 134. Specifically, the first connecting sheet 134 can include a first sheet body 1341 and a second sheet body 1342, the first sheet body 1341 can be attached to the inner plate surface of the first cover plate 13, the second sheet body 1342 can be connected to the first sheet body 1341 and extend in a direction away from the outer surface of the inner plate surface of the first cover plate 13, and the second connecting rod 1412 can be connected to the second sheet body 1342.

[0044] Optionally, the first connecting portion 1431 and the second connecting portion 1432 can be only part of the structure of the first connecting rod 1411. Specifically, the part of the structure of the first connecting rod 1411 can be defined as the first connecting portion 1431, and the part of the structure can be defined as the second connecting portion 1432, without the need to additionally provide the first connecting portion 1431 and the second connecting portion 1432, so as to simplify the structure of the range hood 1. Of course, the first connecting portion 1431 and / or the second connecting portion 1432 can also be structures different from the first connecting rod 1411, and the embodiments of the present application do not limit this.

[0045] Optionally, referring again to Figure 6 , the first connecting rod 1411 can have a first surface 14111, and the second connecting rod 1412, the third connecting rod 1413, and the push rod 1414 can be located on one side of the first surface 14111 of the first connecting rod 1411. The first surface 14111 can be substantially perpendicular to the inner plate surface of the first cover plate 13.

[0046] Optionally, the third connecting rod 1413 can have a second surface 14131 and a third surface 14132 distributed in opposite directions, the first connecting rod 1411 can be located on one side of the second surface 14131 of the third connecting rod 1413, and the push rod 1414 can be located on one side of the third surface 14132 of the third connecting rod 1413. Optionally, the third connecting rod 1413 and the second connecting rod 1412 can be arranged in the same layer. The thickness of the third connecting rod 1413 in the direction perpendicular to the second surface 14131 can be substantially equal to the thickness of the second connecting rod 1412 in the direction perpendicular to the second surface 14131.

[0047] Optionally, the first structure 171 and the second structure 172 can be directly mounted on the cabinet 11 to achieve fixation in the cabinet 11. At least one of the first structure 171 and the second structure 172 can also be mounted on the mounting bracket 17 in the cabinet 11, and the driving member 15 can also be mounted on the mounting bracket 17.

[0048] Optionally, the first structure 171 and the second structure 172 can be only part of the structure of the mounting frame 17. Specifically, part of the structure of the mounting frame 17 can be defined as the first structure 171, and part of the structure of the mounting frame 17 can be defined as the second structure 172, without additionally providing the first structure 171 and the second structure 172, so as to simplify the structure of the range hood 1. Of course, the first structure 171 and / or the second structure 172 can also be structures other than the mounting frame 17, and the embodiments of the present application do not make any limitation in this regard.

[0049] Optionally, the mounting frame 17 can be provided with a limiting structure 173, which can be used to limit the movement of the first cover plate 13 to the first position and / or the second position, so that the first cover plate 13 is more accurately opened to the first position and / or the second position.

[0050] Optionally, the limiting structure 173 of the mounting frame 17 can be a folded edge. Specifically, the edge of the mounting frame 17 can be folded to form the limiting structure 173, which is used to limit the limit position of the second pushing part 14142 along the clockwise rotation of the output shaft of the driving member 15 and the limit position along the counterclockwise rotation. That is, the limiting structure 173 can limit the movement of the first cover plate 13 to the first position, and also limit the movement of the first cover plate 13 to the second position.

[0051] Optionally, in an exemplary scheme, referring to Figure 3 , Figure 4 and Figure 6 , the mounting frame 17 can be substantially in the form of a plate structure, and the mounting frame 17 can have a fourth surface 174 and a fifth surface 175 distributed in opposite directions. The push rod 1414 and the third connecting rod 1413 in the first transmission member 141 can be located on one side of the fourth surface 174 of the mounting frame 17, and the first connecting rod 1411 and the second connecting rod 1412 in the first transmission member 141 can be located on one side of the fifth surface 175 of the mounting frame 17.

[0052] Optionally, in another exemplary scheme, in combination with Figure 8 to Figure 10The mounting rack 17 can be substantially a bent plate. Specifically, the mounting rack 17 can include a first portion 176 and a second portion 177 which are spaced apart, the first portion 176 has a first sub-face 1761 facing the second portion 177 and a second sub-face 1762 opposite to the first sub-face 1761, the second portion 177 has a third sub-face 1771 facing the first portion 176 and a fourth sub-face 1772 opposite to the third sub-face 1771, the first link rod 1411, the second link rod 1412 and the third link rod 1413 are located between the first sub-face 1761 and the third sub-face 1771, and the push rod 1414 is located on the side of the third sub-face 1771 of the second portion 177. The first structure 171 and the second structure 172 are connected to the first portion 176, and the driving member 15 is connected to the second portion 177. Optionally, the mounting rack 17 further includes a third portion 178 connected between the first portion 176 and the second portion 177.

[0053] Optionally, the number of the first transmission members 141 can be one or more. When the number of the first transmission members 141 is more than one, the plurality of first transmission members 141 are spaced apart in the inner cavity 111 and connected by the transmission rod 142, for realizing synchronous movement under the driving of the transmission rod 142. The driving member 15 is connected to the transmission rod 142 and / or at least one first transmission member 141, for driving all the first transmission members 141 to move, so that the first cover plate 13 switches between the first position and the second position.

[0054] Optionally, the plurality of first transmission members 141 and the transmission rod 142 can be fixedly connected together by snap fit, interference fit, welding, screwing or the like, to realize synchronous movement of the two or more first transmission members 141 and the transmission rod 142.

[0055] Optionally, in an exemplary scheme, the transmission rod 142 is connected to the output shaft of the driving member 15 among the two or more first transmission members 141 and the transmission rod 142. In another exemplary scheme, one of the first transmission members 141 is connected to the output shaft of the driving member 15 among the two or more first transmission members 141 and the transmission rod 142. Further optionally, the one first transmission member 141 connected to the output shaft of the driving member 15 can be one of the plurality of first transmission members 141 located at the end.

[0056] The present application designs the plurality of first transmission members 141 connected to the first cover plate 13, which can make the opening and closing movement of the first cover plate 13 more smooth compared with a single first transmission member. The plurality of first transmission members 141 are connected to the transmission rod 142, which can realize synchronous movement of the plurality of first transmission members 141 on the one hand, and is beneficial to the smooth opening and closing of the first cover plate 13; on the other hand, the plurality of first transmission members 141 can be driven by only one driving member 15, which can reduce the production cost.

[0057] For example, when the number of the first transmission members 141 is two, the inner plate surface of the first cover plate 13 has a second edge line 132 and a third edge line 133, which can be located on opposite sides of the first edge line 131, and the two first transmission members 141 can be located on the side of the second edge line 132 of the first cover plate 13 and the side of the third edge line 133 of the first cover plate 13 respectively, and the driving member 15 can be arranged and connected with one of the first transmission members 141, and the two first transmission members 141 are connected through the transmission rod 142. By arranging the first transmission members 141 on both sides of the first cover plate 13, the stability of the first cover plate 13 during movement can be improved.

[0058] The two ends of the transmission rod 142 can be respectively installed on the two first transmission members 141 to realize the synchronous movement of the two first transmission members 141. The two first transmission members 141 are the same in structure and can be arranged in a mirror image. Alternatively, when the number of the first transmission members 141 is two, the number of the mounting frames 17 can also be two, and each mounting frame 17 corresponds to one first transmission member 141.

[0059] Alternatively, please refer to Figure 2 and Figure 5 The fan assembly 12 has an air inlet 122, and the projection of the contour line of the air inlet 122 in the second plane a is a first area 1221, and the projection of the contour line of the first smoke inlet 112 in the second plane a is a second area 1121, at least part of the first area 1221 is located in the second area 1121, and the second plane a is perpendicular to the rotation axis 121 of the fan assembly 12.

[0060] Alternatively, more than 10% of the first area 1221 can be located in the second area 1121. It can be generally understood that more than 10% of the area surrounded by the entire opening of the air inlet 122 will be opposite to the first smoke inlet 112, so as to ensure that the first smoke inlet 112 has sufficient negative pressure suction, thereby ensuring the oil fume absorption effect of the first smoke inlet 112.

[0061] It should be noted that the fan assembly 12 includes a front plate 123 and a rear plate (not shown in the figure) arranged opposite to the front plate 123, the front plate 123 is provided with an air inlet 122, the front plate 123 of the fan assembly 12 can be arranged towards the first smoke inlet 112, and the front plate 123 of the fan assembly 12 can also be arranged away from the first smoke inlet 112. When the front plate 123 of the fan assembly 12 is arranged towards the first smoke inlet 112, the range hood 1 can be designed to be thinner; when the front plate 123 of the fan assembly 12 is arranged away from the first smoke inlet 112, the noise generated during use of the range hood 1 can be reduced.

[0062] The box body 11 can also be formed with a second smoke inlet 113 communicating with the inner cavity 111. Optionally, the projection of the contour line of the second smoke inlet 113 in the second plane a encloses a third area 1131, and at least part of the first area 1221 is located in the third area 1131. Optionally, the maximum dimension of the third area 1131 in the direction perpendicular to the cooktop plane p can be greater than or equal to 50 mm. The opening area of the second smoke inlet 113 is ensured to be large enough to facilitate oil fume absorption.

[0063] Optionally, the rotation axis 121 of the fan assembly 12 can be parallel to the cooktop plane p, at this time, the second plane a perpendicular to the rotation axis 121 will be perpendicular to the cooktop plane p. It should be noted that the rotation axis 121 of the fan assembly 12 can also intersect the cooktop plane p, for example, the acute angle between the rotation axis 121 of the fan assembly 12 and the cooktop plane p is greater than or equal to 60° and less than 90°, so as to reduce the precision requirement during assembly and facilitate assembly.

[0064] The range hood 1 can also include a second cover plate 16 corresponding to the second smoke inlet 113, the second cover plate 16 has a third position and a fourth position, in the third position, the second cover plate 16 closes the second smoke inlet 113, and in the fourth position, the second cover plate 16 opens the second smoke inlet 113.

[0065] Optionally, the first cover plate 13 is in the first position when the second cover plate 16 is in the third position, and the first cover plate 13 is in the second position when the second cover plate 16 is in the fourth position. So that when the first cover plate 13 closes the first smoke inlet 112, the second cover plate 16 closes the second smoke inlet 113; when the first cover plate 13 opens the first smoke inlet 112, the second cover plate 16 opens the second smoke inlet 113.

[0066] It should be noted that the first cover plate 13 can also be in the second position when the second cover plate 16 is in the third position, and the first cover plate 13 can be in the first position when the second cover plate 16 is in the fourth position. So that the first cover plate 13 and the second cover plate 16 are not synchronized in opening, and the opening of the first smoke inlet 112 or the opening of the second smoke inlet 113 can be flexibly adjusted according to specific needs.

[0067] Optionally, referring to Figure 3 and Figure 4 The range hood 1 further comprises a second transmission member 144 connected to the second cover plate 16, the second transmission member 144 is further connected to at least one of the first transmission member 141, the transmission rod 142 and the driving member 15, for driving the second cover plate 16 to switch between the third position and the fourth position.

[0068] Optionally, the number of the second transmission member 144 can be one or more, when the number of the second transmission member 144 is more than one, the number of the second transmission member 144 can be equal to the number of the first transmission member 141, and each second transmission member 144 corresponds to one first transmission member 141. For example, when the number of the first transmission member 141 is two, the number of the second transmission member 144 can also be two, each second transmission member 144 corresponds to one first transmission member 141, and the two second transmission members 144 are also transmissionally connected through the transmission rod 142. Optionally, the two second transmission members 144 are the same in structure, and the two second transmission members 144 can be arranged in a mirror image.

[0069] Optionally, the transmission rod 142 can be located in the inner cavity 111 of the cabinet 11 and on the side of the fan assembly 12 away from the first smoke suction port 112, and the transmission rod 142 is also located on the side of the first smoke suction port 112 close to the cooktop plane p when the range hood 1 is in use. For example, if the front side of the cabinet 11 is provided with the first smoke suction port 112, the transmission rod 142 is arranged on the rear side of the cabinet 11 and below the first smoke suction port 112. In this way, the concealment of the transmission rod 142 can be enhanced, and compared with arranging the transmission rod 142 in the middle of the cabinet 11, the arrangement direction of the transmission rod 142 can reduce the influence on the arrangement of the fan assembly 12 and other structures in the cabinet 11.

[0070] Optionally, the transmission rod 142 can be arranged between a first plane and the cooktop plane p, wherein the first plane is parallel to the cooktop plane p and the rotation axis 121 of the fan assembly 12 is located in the first plane. For example, if the front side of the cabinet 11 is provided with the first smoke suction port 112, the transmission rod 142 is arranged on the rear side of the cabinet 11 and below the first smoke suction port 112, and the transmission rod 142 corresponds to the lower half of the fan assembly 12 or is located at the bottom of the entire fan assembly 12, which is not limited in the embodiments of the present application.

[0071] The transmission rod 142 is designed to be located below the rear side of the fan assembly 12 and below the rear side of the first smoke suction port 112, so that the two or more first transmission members 141 and second transmission members 144 connected to the transmission rod 142 can realize the thinner design of the range hood 1 on the basis of driving the first cover plate 13 and the second cover plate 16 to move.

[0072] Optionally, the second transmission member 144 can be used to drive the second cover plate 16 to move in a direction perpendicular to the opening central axis of the second smoke port 113 when the driving member 15 is driven to move, so as to close or open the second smoke port 113. Optionally, in use, the second smoke port 113 can be arranged close to the cooktop plane p, and the first smoke port 112 can be arranged on a side of the second smoke port 113 away from the cooktop plane p, at this time, the second cover plate 16 can be moved away from the cooktop plane p to achieve the opening of the second smoke port 113, and be moved close to the cooktop plane p to achieve the closing of the second smoke port 113.

[0073] It should be noted that the first smoke port 112 and the second smoke port 113 can be independent of each other, that is, the first smoke port 112 and the second smoke port 113 are not communicated. The first smoke port 112 and the second smoke port 113 can also be communicated to form a through hole, and part of the through hole is defined as the first smoke port 112 and part of the through hole is defined as the second smoke port 113. When the first smoke port 112 and the second smoke port 113 are communicated to form a through hole, if the first transmission member 141 drives the first cover plate 13 to rotate substantially with the first edge line 131 as the rotation axis, and the second transmission member 144 drives the second cover plate 16 to move away from the cooktop plane p, at this time, the area of the through hole exposed on a side of the second cover plate 16 away from the cooktop plane p can be defined as the first smoke port 112, and the area of the through hole exposed on a side of the second cover plate 16 close to the cooktop plane p can be defined as the second smoke port 113.

[0074] Optionally, the second transmission member 144 can be substantially a crank slider mechanism to achieve the driving of the movement of the second cover plate 16. Specifically, referring to Figure 11 , the second transmission member 144 can include a slide rail 1441, a sliding part 1442, a fourth connecting rod 1443 and a fifth connecting rod 1444, the slide rail 1441 is arranged on the mounting frame 17 in the box body 11 and extends in a direction perpendicular to the opening central axis of the second smoke port 113. The sliding part 1442 is connected to the slide rail 1441 and can slide along the length direction of the slide rail 1441, and the second cover plate 16 is mounted on the sliding part 1442. One end of the fourth connecting rod 1443 is rotationally connected to the sliding part 1442, and the other end is rotationally connected to one end of the fifth connecting rod 1444, and the other end of the fifth connecting rod 1444 is connected to the output shaft of the driving member 15. The fifth connecting rod 1444 is used to rotate under the driving of the driving member 15, so that the second cover plate 16 slides with the sliding part 1442 along the length direction of the slide rail 1441, and then the second cover plate 16 closes or opens the second smoke port 113.

[0075] Further optionally, the sliding part 1442 comprises a sliding block 14421, a first plate body 14422 and a second plate body 14423. The sliding block 14421 is located in the slide rail 1441 and can slide along the length direction of the slide rail 1441. The first plate body 14422 has a first plate surface 14424 and a second plate surface 14425 which are located at opposite sides. The second cover plate 16 is located at the side of the second plate surface 14425 of the first plate body 14422 and is connected to the first plate body 14422. The second plate body 14423 is connected to the first plate body 14422 and extends in a direction away from the second plate surface 14425 of the first plate surface 14424. In the direction parallel to the first plate surface 14424, the first plate body 14422 and the sliding block 14421 are located at opposite sides of the second plate body 14423. The second plate body 14423 is connected to the sliding block 14421 and the second plate body 14423 is rotationally connected to the fourth connecting rod 1443. In the direction parallel to the first plate surface 14424, the first plate body 14422 and the sliding block 14421 are distributed at opposite sides of the second plate body 14423, which can reduce the size of the sliding part 1442 in the direction perpendicular to the first plate surface 14424 and improve the structural compactness of the sliding part 1442.

[0076] Further optionally, in the direction parallel to the first plate surface 14424, the fourth connecting rod 1443, the slide rail 1441 and the sliding block 14421 can be located at the same side of the second plate body 14423.

[0077] Optionally, referring to Figure 9 and Figure 11 the second pushing part 14142 in the first transmission member 141 can share the same part with the fifth connecting rod 1444 in the second transmission member 144. Specifically, if the second pushing part 14142 and the fifth connecting rod 1444 share the same part, the fifth connecting rod 1444 can comprise a sixth connecting part 1436, a seventh connecting part 1437 and an eighth connecting part 1438 which are arranged at intervals. The sixth connecting part 1436 is rotationally connected to the fourth connecting rod 1443 at an end away from the sliding part 1442. The seventh connecting part 1437 is connected to the driving member 15. The eighth connecting part 1438 is rotationally connected to the first pushing part 14141 at an end away from the fifth connecting part 1435. The part of the fifth connecting rod 1444 between the seventh connecting part 1437 and the eighth connecting part 1438 constitutes the second pushing part 14142.

[0078] Optionally, the sixth connecting part 1436, the seventh connecting part 1437 and the eighth connecting part 1438 can be located on the same straight line or can form a triangle. The present application does not make any limitation on this. The distance between the sixth connecting part 1436 and the seventh connecting part 1437 can be greater than the distance between the eighth connecting part 1438 and the seventh connecting part 1437.

[0079] Optionally, the range hood 1 can further include an elastic member 18, which can extend along the length direction of the slide rail 1441 and has two ends connected to the mounting frame 17 and the slide part 1442 respectively. The slide part 1442 is connected to the mounting frame 17 through the elastic member 18, so that the gravity of the second transmission member 144 and the second cover plate 16 can be transmitted to the mounting frame 17 through the elastic member 18, the force required by the driving member 15 to maintain the balance of the second cover plate 16 can be reduced, and then a driving member 15 with small size and low cost can be selected. Optionally, the elastic member 18 can be distributed in the vertical direction to maximize the offset of the gravity of the second cover plate 16 and reduce the use cost of the driving member 15. The elastic member 18 can be any component that can be deformed, such as a spring, and the embodiments of the present application do not make any limitation on this.

[0080] Optionally, referring to Figure 12 and Figure 13 In an exemplary scheme, the range hood 1 can include a first mesh plate 191 and a connecting plate 192. The first mesh plate 191 is located on the side of the inner plate surface of the first cover plate 13, and a plurality of mesh holes 1911 are arranged on the first mesh plate 191. The connecting plate 192 is connected between the first mesh plate 191 and the first cover plate 13 and forms a smoke guide cavity 193 with the first mesh plate 191 and the first cover plate 13. The smoke guide cavity 193 is in communication with the inner cavity 111 of the cabinet 11. When the first cover plate 13 is in the first position, the first mesh plate 191 is located in the cabinet 11. When the first cover plate 13 is in the second position, the first mesh plate 191 is located outside the cabinet 11, and the first smoke suction port 112 is in communication with the outside through the mesh holes 1911.

[0081] Further optionally, the first mesh plate 191 and the connecting plate 192 can be an integral structure. The range hood 1 can further include a second connecting piece 194 connected between the connecting plate 192 and the first cover plate 13. More specifically, the second connecting piece 194 can include a third piece (not shown in the figure) abutting the inner plate surface of the first cover plate 13 and a fourth piece 1941 abutting the outer peripheral surface of the connecting plate 192. The third piece and the fourth piece 1941 are connected to realize the connection of the first mesh plate 191, the connecting plate 192 and the first cover plate 13.

[0082] When the range hood 1 includes the first mesh plate 191, the connecting plate 192 and the second connecting piece 194, the first transmission member 141 of the range hood 1 can be connected with the second connecting piece 194 to realize the connection of the first transmission member 141 and the first cover plate 13 without additionally arranging the first connecting piece 1341. More specifically, the second connecting rod 1412 of the first transmission member 141 can be connected with the second connecting piece 194.

[0083] Optionally, the first mesh plate 191 can be connected to the mounting frame 17 in the hood 11, so as to be installed at the first smoke inlet 112.

[0084] In yet another exemplary scheme, referring to Figure 14 and Figure 15 The hood 1 can include a first mesh plate 191 provided with a plurality of mesh holes, the first mesh plate 191 being arranged corresponding to the first smoke inlet 112 and connected to the hood 11. The first smoke inlet 112 is in communication with the outside through the mesh holes of the first mesh plate 191 in the second position. Since the first mesh plate 191 is connected to the hood 11, the first mesh plate 191 will not move with the first cover plate 13 when the first cover plate 13 is switched between the first position and the second position, which can reduce the driving force requirement of the driving member 15, and thus a small-size and low-cost driving member 15 can be selected. Moreover, since the first mesh plate 191 is directly connected to the hood 11, the structural stability of the first mesh plate 191 after long-term use can be ensured, and the first mesh plate 191 can be prevented from falling off or being scratched.

[0085] Optionally, the first mesh plate 191 can be connected to the mounting frame 17 in the hood 11, so as to be installed at the first smoke inlet 112.

[0086] Optionally, the hood 1 can further include a second mesh plate (not shown in the figure) arranged at the second smoke inlet 113, the second mesh plate being provided with mesh holes and connected to the hood 11. Optionally, the second mesh plate can be connected to the mounting frame 17 in the hood 11, so as to be installed at the second smoke inlet 113.

[0087] In yet another exemplary scheme, the first smoke inlet 112 and the second smoke inlet 113 can be arranged without mesh plates, so that the oil fume can directly enter the inner cavity 111 through the first smoke inlet 112 and the second smoke inlet 113.

[0088] Optionally, the hood 1 can further include a connecting structure 195 connected between the second cover plate 16 and the second driving member 144. More specifically, the connecting structure 195 can be attached to and connected with the inner plate surface of the second cover plate 16, and the connecting structure 195 can be connected with the sliding portion 1442 of the second driving member 144.

[0089] Optionally, the driving member 15 can comprise a motor, and an output shaft of the driving member 15 can correspond to an output shaft of the motor. The motor has a first state and a second state. In the first state, the motor drives the first transmission member 141 to move so that the first cover plate 13 is located at the first position. In the second state, the motor drives the first transmission member 141 to move so that the first cover plate 13 is located at the second position. When the motor is switched from the first state to the second state, a rotation stroke of the output shaft of the motor can be greater than or equal to 85° and less than or equal to 95°. The rotation stroke of the output shaft of the motor will affect the rotation stroke of the first cover plate 13 when the first cover plate 13 is switched from the first position to the second position, that is, affect the opening degree of the first smoking port 112 by the first cover plate 13. Reasonable limitation on the rotation stroke of the output shaft of the motor can ensure good smoking effect at the first smoking port 112 on the premise of reducing power consumption of the motor.

[0090] Optionally, when the first cover plate 13 is switched from the first position to the second position, a rotation stroke of the first cover plate 13 around the first edge line 131 can be greater than or equal to 65° and less than or equal to 75°. Optionally, when the second cover plate 16 is switched from the third position to the fourth position, a moving stroke of the second cover plate 16 in a direction perpendicular to the opening central axis of the second smoking port 113 can be greater than or equal to 100 mm and less than or equal to 110 mm.

[0091] Optionally, referring again to Figure 1 , the outer plate surface of the first cover plate 13 in the first position and the outer plate surface of the second cover plate 16 in the third position can be located in the same plane to improve the appearance flatness and aesthetics of the range hood 1 and facilitate cleaning.

[0092] Optionally, a gap between the first cover plate 13 in the first position and the second cover plate 16 in the third position can be greater than or equal to 3 mm and less than or equal to 5 mm to realize smaller gap between the first cover plate 13 and the second cover plate 16 on the premise of ensuring that the first cover plate 13 can be smoothly opened and closed.

[0093] It should be noted that the first smoking port 112 and / or the second smoking port 113 can not only be opened to suck in oil fumes during cooking, but also be opened to purify indoor air when not cooking. Of course, a ventilation port 114 can also be additionally provided on the cabinet 11 to purify indoor air through the ventilation port 114, and the present application embodiment does not make any limitation thereon.

[0094] In an exemplary scheme, the ventilation port 114 can be in communication with the first smoking port 112 and / or the second smoking port 113, and when the first cover plate 13 is in the first position and the second cover plate 16 is in the third position, the range hood 1 can be in communication with the outside through the ventilation port 114. Optionally, referring to Figure 14 and Figure 15When the ventilation opening 114 is in communication with the first smoke suction opening 112, and the first mesh plate 191 is arranged at the first smoke suction opening 112, the first mesh plate 191 can also extend to the ventilation opening 114, so that the ventilation opening 114 is in communication with the outside through the mesh holes 1911 of the first mesh plate 191, and the safety of the range hood 1 is improved. Alternatively, when the ventilation opening 114 is in communication with the second smoke suction opening 113, and the second mesh plate is arranged at the second smoke suction opening 113, the second mesh plate can also extend to the ventilation opening 114. In another exemplary scheme, in combination with Figure 1 The ventilation opening 114 can be independent of the first smoke suction opening 112, and independent of the second smoke suction opening 113. The ventilation opening 114 can include a plurality of small holes arranged at intervals, so as to improve the safety performance of the range hood 1.

[0095] Alternatively, the ventilation opening 114 can be located on the side of the first smoke suction opening 112 away from the cooking bench plane p, or located on the side of the second smoke suction opening 113 close to the cooking bench plane p, and the specific arrangement position of the ventilation opening 114 is not limited in the embodiments of the present application.

[0096] It should be noted that the ventilation opening 114 can also not be arranged on the range hood 1, so that when the first cover plate 13 is in the first position and the second cover plate 16 is in the third position, the range hood 1 is in a substantially closed state.

[0097] The above description is only the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made according to the content of the specification and drawings of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A range hood characterized by, The oil fume exhaust fan comprises a box, a first cover plate, a first transmission member, a driving member, a first structure part and a second structure part, the box is formed with an inner cavity and a first smoking port communicated with the inner cavity, and the first cover plate is arranged corresponding to the first smoking port; the first structure part and the second structure part are arranged in the box in a spaced manner; the first transmission member comprises: a first connecting rod comprising a first connecting part and a second connecting part arranged in a spaced manner; a second connecting rod, one end of which is rotationally connected with the first connecting part, and the other end of which is rotationally connected with the first structure part; the second connecting rod connects the first cover plate; a third connecting rod comprising a third connecting part, a fourth connecting part and a fifth connecting part, the third connecting part, the fourth connecting part and the fifth connecting part are connected to form a triangle, the third connecting part is rotationally connected with the second connecting part, and the fourth connecting part is rotationally connected with the second structure part; and a push rod comprising a first pushing part and a second pushing part, one end of the first pushing part is rotationally connected with the fifth connecting part, the other end of the first pushing part is rotationally connected with one end of the second pushing part, and the other end of the second pushing part is connected with the driving member, so as to drive the third connecting rod to move under the driving of the driving member, so as to realize the switching of the first cover plate between a first position and a second position, the first cover plate closes the first smoking port in the first position, and the first cover plate opens the first smoking port in the second position.

2. The range hood of claim 1, wherein, The third connecting rod is in a triangular shape, and the third connecting part, the fourth connecting part and the fifth connecting part are arranged corresponding to three angles of the triangular shape respectively; and / or The third connecting rod is provided with a triangular hole, and the third connecting part, the fourth connecting part and the fifth connecting part are arranged corresponding to three angles of the triangular hole respectively.

3. The range hood according to claim 1, wherein The first connecting rod has a first surface, and the second connecting rod, the third connecting rod and the push rod are located on one side of the first surface of the first connecting rod; and / or The third connecting rod has a second surface and a third surface distributed in opposite directions, the first connecting rod is located on one side of the second surface of the third connecting rod, and the push rod is located on one side of the third surface of the third connecting rod.

4. The range hood according to claim 1, wherein The oil fume exhaust fan further comprises a mounting frame, the mounting frame is located in the inner cavity and connected with the box, and the first structure part, the second structure part and the driving member are connected with the mounting frame.

5. The range hood of claim 4, wherein, The mounting frame has a fourth surface and a fifth surface distributed in opposite directions, the third connecting rod and the push rod are located on one side of the fourth surface of the mounting frame, and the first connecting rod and the second connecting rod are located on one side of the fifth surface of the mounting frame; and / or The mounting frame has a fourth surface and a fifth surface distributed in opposite directions, the third connecting rod and the push rod are located on one side of the fourth surface of the mounting frame, and the first connecting rod and the second connecting rod are located on one side of the fifth surface of the mounting frame; and / or The mounting frame comprises a first part and a second part arranged in a spaced manner, the first part has a first sub-face facing the second part and a second sub-face distributed opposite to the first sub-face, the second part has a third sub-face facing the first part and a fourth sub-face distributed opposite to the third sub-face, the third sub-face is arranged in a spaced manner with the first sub-face, the first connecting rod, the second connecting rod and the third connecting rod are all located between the first sub-face and the third sub-face, the push rod is located on the side of the third sub-face of the second part; the first structure part and the second structure part are both connected to the first part, the driving member is connected to the second part; and / or The mounting frame is provided with a limiting structure, when the first transmission member moves to abut against the limiting structure in a first direction under the driving of the driving member, the first cover plate is in the first position; and / or, when the first transmission member moves to abut against the limiting structure in the opposite direction of the first direction under the driving of the driving member, the first cover plate is in the second position.

6. The range hood according to claim 1, wherein The box is further formed with a second smoke suction port in communication with the inner cavity, and the range hood further comprises: A second cover plate corresponding to the second smoke suction port; A second transmission member connected to the second cover plate and the driving member, for switching the second cover plate between a third position and a fourth position under the driving of the driving member, the second cover plate closes the second smoke suction port in the third position, and the second cover plate opens the second smoke suction port in the fourth position.

7. The range hood of claim 6, wherein The second transmission member comprises: A sliding rail arranged in the box and extending in a direction perpendicular to the opening axis of the second smoke suction port; A sliding part connected to the sliding rail and slidable along the length direction of the sliding rail, the second cover plate is mounted on the sliding part; A fourth connecting rod rotationally connected to one end of the sliding part; and A fifth connecting rod rotationally connected to one end of the fourth connecting rod away from the sliding part and connected to the other end of the driving member, for rotating under the driving of the driving member to make the second cover plate slide along the length direction of the sliding rail with the sliding part to close or open the second smoke suction port.

8. The range hood of claim 7, wherein, The fifth connecting rod comprises a sixth connecting part, a seventh connecting part and an eighth connecting part arranged in a spaced manner, the sixth connecting part is rotationally connected to one end of the fourth connecting rod away from the sliding part, the seventh connecting part is connected to the driving member, the eighth connecting part is rotationally connected to one end of the first push part away from the fifth connecting part, and the part of the fifth connecting rod between the seventh connecting part and the eighth connecting part constitutes the second push part.

9. The range hood according to claim 1, wherein The inner plate surface of the first cover plate has a first edge line, a second edge line and a third edge line, the first edge line is located on the side of the first cover plate away from the cooking table plane during use, the second edge line and the third edge line are located on the opposite sides of the first edge line, the number of the first transmission members is two, and the two first transmission members are respectively located on the side of the second edge line of the first cover plate and the side of the third edge line of the first cover plate, the driving member is provided corresponding to and connected with one of the first transmission members, and the two first transmission members are transmissionally connected through a transmission rod.

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