CN217503760U - Fume exhaustor - Google Patents

Abstract

The invention discloses a range hood which comprises a box body, a fan assembly, a first cover plate, a transmission assembly and a driving piece, wherein a first smoke suction port is formed in the box body; the transmission assembly comprises a transmission rod and more than two first transmission pieces, and each first transmission piece is connected with the first cover plate and the transmission rod; the transmission rod is positioned on one side of the fan assembly in the box body, which is far away from the first smoke suction port, and is positioned on one side of the first smoke suction port, which is close to the plane of the cooking bench when the range hood is used; the driving piece is used for driving all the first driving pieces to move, and then the first cover plate is enabled to open the first smoke suction port or close the first smoke suction port. On one hand, the synchronous movement of the first transmission pieces can be realized, and the smooth opening and closing of the first cover plate are facilitated; on the other hand, the driving of a plurality of first transmission pieces can be realized through only one driving piece, and the production cost can be reduced. And the design position of the transmission rod is limited, so that the concealment of the transmission rod can be enhanced, and the influence of the arrangement position of the transmission rod on the arrangement of other structures in the box body is reduced.

Description

Fume exhaust fan

Technical Field

The invention relates to the field of electrical equipment, in particular to a range hood.

Background

The range hood works by utilizing the fluid dynamics principle, and oil smoke is sucked and discharged through a fan assembly arranged in the inner cavity of the range hood. In order to ensure the cleanness of an inner cavity and the like of the range hood in the related art, a cover plate capable of opening and closing the smoke suction port and an opening and closing mechanism for opening and closing the smoke suction port by the cover plate are arranged at the smoke suction port. However, the range hood in the related art has a huge body size due to the unreasonable design of the opening and closing mechanism.

SUMMERY OF THE UTILITY MODEL

The invention mainly aims to provide a range hood and aims to solve the technical problem that an existing range hood is large in size.

In order to achieve the above object, the range hood proposed by the present invention includes:

the box body is provided with an inner cavity and a first smoke suction port communicated with the inner cavity;

the fan assembly is positioned in the inner cavity;

a first cover plate having a first position in which the first cover plate closes the first smoking port and a second position in which the first cover plate opens the first smoking port;

the transmission assembly comprises a transmission rod and more than two first transmission pieces, the more than two first transmission pieces are arranged in the inner cavity at intervals, and each first transmission piece is connected with the first cover plate and the transmission rod; the transmission rod is positioned in the inner cavity and on one side of the fan assembly, which is far away from the first smoke suction port, and the transmission rod is also positioned on one side of the first smoke suction port, which is close to the plane of the cooking bench, when the range hood is used;

and the driving part is connected with the transmission rod and/or at least one first driving part and is used for driving all the first driving parts to move so as to switch the first cover plate between the first position and the second position.

In the technical scheme of the invention, the plurality of first transmission pieces connected with the first cover plate are designed, so that the opening and closing movement of the first cover plate is smoother compared with that of a single first transmission piece. The first transmission pieces are connected with the transmission rod, so that on one hand, the synchronous motion of the first transmission pieces can be realized, and the smooth opening and closing of the first cover plate are facilitated; on the other hand, the driving of a plurality of first transmission pieces can be realized through only one driving piece, and the production cost can be reduced. Design position through to the transfer line is injectd, can strengthen the disguise of transfer line, and compare in setting up the transfer line in the middle part of box, can reduce the influence that the position of arranging of transfer line arranged the fan subassembly in to the box etc. and arrange, realizes the more thinization design of lampblack absorber.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a perspective view of an embodiment of a range hood provided by the invention when a first cover plate is in a first position and a second cover plate is in a second position;

fig. 2 is a perspective view of the range hood shown in fig. 1 when the first cover plate is in the second position and the second cover plate is in the fourth position;

fig. 3 is a perspective view of a part of the structure of the range hood shown in fig. 1 when the first cover plate is in the second position and the second cover plate is in the fourth position;

fig. 4 is a perspective view of a part of the structure of the range hood shown in fig. 1 when the first cover plate is in the first position and the second cover plate is in the second position;

FIG. 5 is a projection view of the first smoke suction port, the second smoke suction port and the air inlet of the range hood shown in FIG. 1 on a second plane;

FIG. 6 is a perspective view of a transmission assembly, a driving member and a mounting bracket in the range hood shown in FIG. 1;

FIG. 7 is a schematic connection diagram of a first cover plate, a transmission assembly and a mounting rack in the range hood shown in FIG. 1;

fig. 8 is a perspective view of a partial structure of another range hood embodiment 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;

fig. 9 is a perspective view of a partial structure of the range hood shown in fig. 8;

fig. 10 is a perspective view of a part of the structure of the range hood shown in fig. 8 when the first cover plate is in the first position and the second cover plate is in the third position;

FIG. 11 is a perspective view of a drive assembly and mounting bracket in the range hood shown in FIG. 1;

FIG. 12 is a perspective view of a first cover plate, a first mesh plate and a connecting plate in another embodiment of a range hood provided by the invention;

fig. 13 is a perspective view of a first cover plate, a first mesh plate, a connecting plate, a second cover plate and a connecting structure in the range hood shown in fig. 12;

fig. 14 is a perspective view of another range hood embodiment 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;

fig. 15 is a perspective view of the range hood shown in fig. 14 when the first cover plate is in the second position and the second cover plate is in the fourth position.

The reference numbers illustrate: 1. a range hood; 11. a box body; 111. an inner cavity; 112. a first smoking port; 1121. a second region; 113. a second smoking port; 1131. a third region; 114. a vent; 12. a fan assembly; 121. a rotation axis; 122. an air inlet; 1221. a first region; 123. a front plate; 13. a first cover plate; 131. a first boundary line; 132. a second boundary line; 133. a third boundary line; 134. a first connecting piece; 1341. a first sheet body; 1342. a second sheet body; 14. a transmission assembly; 141. a first transmission member; 1411. a first link; 14111. a first surface; 1412. a second link; 14121. an avoidance interval; 1413. a third link; 14131. a second surface; 14132 a third surface; 1414. a push rod; 14141. a first pushing part; 14142. a second pushing portion; 142. a transmission rod; 1431. a first connection portion; 1432. a second connecting portion; 1433. a third connecting portion; 1434. a fourth connecting portion; 1435. a fifth connecting part; 1436. a sixth connecting portion; 1437. a seventh connecting portion; 1438. an eighth connecting portion; 144. a second transmission member; 1441. a slide rail; 1442. a sliding part; 14421. a slider; 14422. a first plate body; 14423. a second plate body; 14424. a first board surface; 14425. a second board surface; 1443. a fourth link; 1444. a fifth link; 15. a drive member; 16. a second cover plate; 17. a mounting frame; 171. a first structure portion; 172. a second structure portion; 173. a limiting structure; 174. a fourth surface; 175. a fifth surface; 176. a first portion; 1761. a first sub-surface; 1762. a second sub-surface; 177. a second portion; 1771. a third sub-surface; 1772. a fourth sub-surface; 178. a third portion; 18. an elastic member; 191. a first screen plate; 192. a connecting plate; 193. a smoke guide cavity; 194. a second connecting sheet; 1941. a fourth sheet body; 195. a connecting structure; p, a cooking bench plane; a. a second plane.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "connected", "fixed", and the like are to be understood broadly, for example, "fixed" may be fixedly connected, may be detachably connected, or may be integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 and fig. 2, an embodiment of the application provides a range hood 1, where the range hood 1 includes a box body 11 and a fan assembly 12. The box 11 is formed with an inner cavity 111 and a first smoke suction port 112 communicated with the inner cavity 111, and the fan assembly 12 is located in the inner cavity 111 and used for generating negative pressure suction force, so that oil smoke can be sucked into the inner cavity 111 through the first smoke suction port 112, and the kitchen cannot be filled with oil smoke, thereby improving the cooking experience of a user.

The range hood 1 further includes a first cover plate 13 disposed corresponding to the first smoke suction port 112, the first cover plate 13 has a first position and a second position, and the first smoke suction port 112 is closed by the first cover plate 13 at the first position, as shown in fig. 1; the second position, in which the first cover 13 opens the first smoking port 112, can be seen in fig. 2. For example, when the range hood 1 is idle, the first cover plate 13 may be in the first position to close the first smoke suction port 112, so as to prevent dust and the like from entering the inner cavity 111 of the box body 11 through the first smoke suction port 112, or prevent the fan assembly 12 from being exposed and damaged. When the range hood 1 works, the first cover plate 13 may be in the second position to open the first smoke suction port 112, so that the oil smoke can be sucked into the inner cavity 111 through the first smoke suction port 112 after the fan assembly 12 is started.

Referring to fig. 3 and 4, the range hood 1 further includes a transmission assembly 14 and a driving member 15, the transmission assembly 14 includes more than two first transmission members 141 and a transmission rod 142, and the more than two first transmission members 141 are disposed in the inner cavity 111 at intervals and are connected to the transmission rod 142, so as to achieve synchronous motion 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, and is used for driving all the first transmission members 141 to move, so that the first cover plate 13 is switched between the first position and the second position.

Optionally, the two or more first transmission members 141 and the transmission rod 142 may be fixedly connected together by means of snap fit, interference fit, welding, screwing, or the like, so as to synchronize the movement of the two or more first transmission members 141 and the transmission rod 142.

Alternatively, in an exemplary embodiment, 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 embodiment, one of the two or more first transmission members 141 and the transmission rod 142 is connected to the output shaft of the driving member 15. Further alternatively, a first transmission member 141 connected to the output shaft of the driving member 15 may be: among the plurality of first transmission members 141, one first transmission member 141 is located at an end portion.

The plurality of first transmission members 141 connected to the first cover plate 13 according to the present disclosure can make the opening and closing movement of the first cover plate 13 smoother compared to a single first transmission member. The plurality of first transmission pieces 141 are connected with the transmission rod 142, so that on one hand, the synchronous movement of the plurality of first transmission pieces 141 can be realized, and the smooth opening and closing of the first cover plate 13 are facilitated; on the other hand, the driving of the plurality of first transmission members 141 can be realized by only one driving member 15, and the production cost can be reduced.

Alternatively, the transmission rod 142 may be located in the inner cavity 111 of the box 11 and on a side of the fan assembly 12 away from the first smoke suction port 112, and the transmission rod 142 is also located on a 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 first smoke suction port 112 is provided on the front side of the housing 11, the transmission lever 142 is provided substantially on the rear side of the housing 11 and below the first smoke suction port 112. In this way, the concealing performance of the transmission rod 142 can be enhanced, and compared with the case where the transmission rod 142 is disposed in the middle of the case 11, the influence of the arrangement orientation of the transmission rod 142 on the arrangement of the structures such as the fan assembly 12 in the case 11 can be reduced.

Alternatively, the drive link 142 may be configured to be disposed between a first plane and the cooktop plane p, wherein the first plane is parallel to the cooktop plane p and the axis of rotation 121 of the fan assembly 12 lies within the first plane. For example, if the first smoke exhaust port 112 is disposed on the front side of the box 11, the transmission rod 142 is disposed on the rear side of the box 11 and below the first smoke exhaust port 112, and the transmission rod 142 corresponds to the lower half of the fan assembly 12 or is disposed at the bottom of the whole fan assembly 12, which is not limited in the embodiments of the present application.

Alternatively, referring to fig. 2 and 5, the fan assembly 12 has the air inlet 122, a projection of an outline of the air inlet 122 in a second plane a is a first region 1221, a projection of an outline of the first smoke suction opening 112 in the second plane a is a second region 1121, and at least a part of the first region 1221 is located in the second region 1121, and the second plane a is perpendicular to the rotation axis 121 of the fan assembly 12.

Alternatively, more than 10% of the first region 1221 may be located in the second region 1121. It can be roughly understood that: more than 10% of the area enclosed by the whole opening of the air inlet 122 is opposite to the first smoke absorbing opening 112, so as to ensure that the first smoke absorbing opening 112 has sufficient negative pressure suction force, and further ensure the oil smoke absorbing effect at the first smoke absorbing opening 112.

It should be noted that the fan assembly 12 includes a front plate 123 and a rear plate (not shown in the drawings) opposite to the front plate 123, the air inlet 122 is disposed on the front plate 123, the front plate 123 of the fan assembly 12 may be disposed toward the first smoke suction port 112, and the front plate 123 of the fan assembly 12 may also be disposed away from the first smoke suction port 112. When the front plate 123 of the fan assembly 12 is disposed toward the first smoke suction port 112, the range hood 1 can be designed to be thinner; when the front plate 123 of the fan assembly 12 is disposed away from the first smoke suction port 112, noise generated during the use of the range hood 1 can be reduced.

The box 11 may further be formed with a second smoking port 113 communicated with the inner cavity 111, the range hood 1 may further include a second cover plate 16 disposed corresponding to the second smoking port 113, the second cover plate 16 has a third position and a fourth position, the second cover plate 16 closes the second smoking port 113 in the third position, and the second cover plate 16 opens the second smoking port 113 in the fourth position.

Alternatively, 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 the second cover 16 closes the second smoking port 113 when the first cover 13 closes the first smoking port 112; when the first lid 13 opens the first smoking port 112, the second lid 16 opens the second smoking port 113.

It should be noted that the first cover 13 may also be located at the second position when the second cover 16 is located at the third position, and the first cover 13 may be located at the first position when the second cover 16 is located at the fourth position. The first cover 13 and the second cover 16 are opened asynchronously, and the opening of the first smoking port 112 or the opening of the second smoking port 113 can be flexibly adjusted according to specific requirements.

Optionally, a projection of the contour line of the second smoking port 113 in the second plane a defines a third area 1131, and at least a part of the first area 1221 is located in the third area 1131. Alternatively, the maximum dimension of the third region 1131 in a direction perpendicular to the cooktop plane p may be greater than or equal to 50 mm. The opening area of the second smoke exhaust 113 is ensured to be large enough for absorbing the oil smoke.

Alternatively, the axis of rotation 121 of the fan assembly 12 may be parallel to the cooktop plane p, in which case a second plane a perpendicular to the axis of rotation 121 would be perpendicular to the cooktop plane p. It should be noted that the rotation axis 121 of the fan assembly 12 may intersect the cooktop plane p, for example, an 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.

Alternatively, the first transmission member 141 can be used to rotate the first cover 13 relative to the opening end surface of the first smoking hole 112 to close the first smoking hole 112 or open the first smoking hole 112 when the driving member 15 drives the movement. That is, the first cover plate 13 is turned over to open and close the first smoke suction opening 112, and this scheme can realize the miniaturization design of the range hood 1 compared with the case that the first cover plate 13 is adopted to translate along the direction perpendicular to the central axis of the opening of the first smoke suction opening 112 to open and close the first smoke suction opening 112.

For example, the inner plate surface of the first cover 13 has a first boundary line 131 away from the cooking bench plane p in use, and the first cover 13 can rotate about the first boundary line 131 as a rotation axis to open and close the first smoke suction port 112. So, during the use, install lampblack absorber 1 in top of a kitchen range plane p top, the oil smoke of top of a kitchen range plane p top under the second position can receive blockking of the interior face of the first apron 13 of upset and enter into first smoke absorption mouth 112 in, promptly, the first apron 13 that the upset was opened can lead to the transmission of oil smoke, can promote the smoking volume of first smoke absorption mouth 112, promotes lampblack absorber 1's result of use.

Optionally, referring to fig. 6 and 7, the range hood 1 may include a first structure portion 171 and a second structure portion 172 installed in the box body 11 and spaced apart from each other. The first transmission element 141 may include a first link 1411, a second link 1412, a third link 1413 and a push rod 1414, wherein the first link 1411 has a first connection portion 1431 and a second connection portion 1432 which are spaced apart from each other. The second link 1412 has one end rotatably connected to the first connection portion 1431 and the other end rotatably connected to the first structure portion 171. The third link 1413 has one end rotatably connected to the second connection portion 1432 and the other end rotatably connected to the second structure portion 172. The second link 1412 is further connected to the first cover plate 13, and the push rod 1414 is connected to the driving member 15 and the third link 1413, and is used for pushing the third link 1413 and the second link 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.

Alternatively, in an exemplary embodiment, the pushing rod 1414 can be a telescopic rod, and in this case, the pushing rod 1414 can be deformed by the driving member 15; for example, when the pushing rod 1414 is extended, the pushing rod 1414 can push the third link 1413 to rotate around the second structure portion 172 in the first direction, and then the second link 1412 rotates around the first structure portion 171 in the second direction, so as to open the first smoking port 112 through the first cover 13; when the pushing rod 1414 is shortened, the pushing rod 1414 can pull the third link 1413 to rotate around the second structure portion 172 in the opposite direction of the first direction, so as to make the second link 1412 rotate around the first structure portion 171 in the opposite direction of the second direction, so as to achieve the effect that the first cover plate 13 closes the first smoking port 112. The first link 1411, the second link 1412, the third link 1413, and the portion between the first structure 171 and the second structure 172 may substantially form a four-bar linkage.

In another exemplary scheme, the push rod 1414 may include a first pushing portion 14141 and a second pushing portion 14142, in which case, the third link 1413 may 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 to the second connecting portion 1432, the fourth connecting portion 1434 is rotatably connected to the second structure portion 172, the fifth connecting portion 1435 may be rotatably connected to one end of the first pushing portion 14141, the other end of the first pushing portion 14141 is rotatably connected to one end of the second pushing portion 14142, and the other end of the second pushing portion 14142 is connected to the driving member 15. The first pushing portion 14141, the second pushing portion 14142, the third link 1413 between the fourth connecting portion 1434 and the fifth connecting portion 1435, and the second pushing portion 14142 between the end of the driving element 15 and the second structure portion 172 may form another four-bar linkage mechanism. That is, the first transmission member 141 is substantially composed of two four-bar linkages, and the two four-bar linkages share the third link 1413, so that the structural design of the first transmission member 141 can be simplified, and the assembly is more convenient.

Alternatively, the third link 1413 may be substantially triangular, and the third connection portion 1433, the fourth connection portion 1434, and the fifth connection portion 1435 may be disposed corresponding to three corners of the triangle, respectively. Alternatively, the third link 1413 may have a substantially triangular hole formed therein, and the third connection part 1433, the fourth connection part 1434, and the fifth connection part 1435 may be disposed to correspond to three corners of the triangular hole, respectively. Alternatively, referring to fig. 8 to 10, the third link 1413 may be substantially in the shape of a curved knife, and the embodiment of the present application does not limit the specific shape of the third link 1413.

Alternatively, the second link 1412 may be generally hook-shaped; specifically, the second link 1412 defines an escape interval 14121. In this way, when the first transmission element 141 drives the first cover 13 to flip open, the escape section 14121 of the second link 1412 can avoid the case 11, so that the movement of the first transmission element 141 is smoother.

Alternatively, the connection of the second link 1412 to the first cover plate 13 may be: the second link 1412 is connected to the first cover plate 13 via the first connecting piece 134. Specifically, the first connecting piece 134 may include a first sheet 1341 and a second sheet 1342, the first sheet 1341 may be attached to the inner surface of the first cover plate 13, the second sheet 1342 may be connected to the first sheet 1341 and extend to bend toward the direction away from the outer surface of the inner surface of the first cover plate 13, and the second connecting rod 1412 may be connected to the second sheet 1342.

Alternatively, the first connection portion 1431 and the second connection portion 1432 may be only partial structures in the first link 1411. Specifically, a partial structure of the first link 1411 may be defined as the first connection part 1431, and a partial structure may be defined as the second connection part 1432, without additionally providing the first connection part 1431 and the second connection part 1432, so as to simplify the structure of the range hood 1. Of course, the first connection portion 1431 and/or the second connection portion 1432 may also have a structure different from that of the first connection rod 1411, and the embodiment of the present application is not limited thereto.

Alternatively, referring again to fig. 6, the first link 1411 may have a first surface 14111, and the second link 1412, the third link 1413, and the push rod 1414 may be located on a side of the first surface 14111 of the first link 1411. The first surface 14111 may be substantially perpendicular to the inner plate surface of the first cover plate 13.

Alternatively, the third link 1413 can have a second surface 14131 and a third surface 14132 that are opposite, the first link 1411 can be located on the side of the third link 1413 where the second surface 14131 is located, and the pushrod 1414 can be located on the side of the third link 1413 where the third surface 14132 is located. Alternatively, the third link 1413 and the second link 1412 may be disposed in the same layer. A thickness of the third link 1413 in a direction perpendicular to the second surface 14131 may be substantially equal to a thickness of the second link 1412 in a direction perpendicular to the second surface 14131.

Alternatively, the first structure portion 171 and the second structure portion 172 may be directly mounted on the case 11 to achieve fixation in the case 11. At least one of the first structure 171 and the second structure 172 may be attached to the mounting bracket 17 in the housing 11, and the driver 15 may be attached to the mounting bracket 17.

Alternatively, the first structure part 171 and the second structure part 172 may be only partial structures in the mounting frame 17. Specifically, a partial structure of the mounting bracket 17 may be defined as the first structure part 171, and a partial structure may be defined as the second structure part 172, without additionally providing the first structure part 171 and the second structure part 172, so as to simplify the structure of the range hood 1. Of course, the first structure portion 171 and/or the second structure portion 172 may also be a structure different from the mounting frame 17, and the embodiment of the present application is not limited thereto.

Optionally, a limiting structure 173 may be disposed on the mounting frame 17, and the limiting structure 173 may be used to limit the movement of the first cover 13 to the first position and/or the second position, so that the first cover 13 is opened to the first position and/or the second position more precisely.

Alternatively, the retaining structure 173 of the mounting bracket 17 may be a flap. Specifically, an edge portion of the mounting bracket 17 may be bent to form a limiting structure 173, and the limiting structure 173 is used for limiting a limit position of the second pushing portion 14142 rotating with the output shaft of the driving member 15 in a clockwise direction and a limit position of the second pushing portion 14142 rotating with the output shaft in a counterclockwise direction. That is, the limiting structure 173 may limit the movement of the first cover 13 to the first position, and may also limit the movement of the first cover 13 to the second position.

Alternatively, in another exemplary version, in conjunction with fig. 8-10, mounting bracket 17 may be generally in the form of a bent plate; specifically, the mounting bracket 17 may include a first portion 176 and a second portion 177 spaced apart from each other, the first portion 176 has a first sub-surface 1761 facing the second portion 177 and a second sub-surface 1762 opposite to the first sub-surface 1761, the second portion 177 has a third sub-surface 1771 facing the first portion 176 and a fourth sub-surface 1772 opposite to the third sub-surface 1771, the first link 1411, the second link 1412 and the third link 1413 are located between the first sub-surface 1761 and the third sub-surface 1771, and the push rod 1414 is located on a side of the second portion 177 where the third sub-surface 1771 is located. 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 bracket 17 further includes a third portion 178 connected between the first portion 176 and the second portion 177.

The transmission assembly 14 further includes a second transmission member 144 connected to the second cover 16, and 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 16 to switch between the third position and the fourth position.

Alternatively, the number of the second transmission members 144 may be one or more, and when the number of the second transmission members 144 is more than one, the number of the second transmission members 144 may be equal to that of the first transmission members 141, and each of the second transmission members 144 is disposed corresponding to one of the first transmission members 141.

Alternatively, the second transmission member 144 can be used to drive the second cover 16 to move in a direction perpendicular to the central axis of the opening of the second smoking opening 113 when the driving member 15 drives the second smoking opening 113, so as to close the second smoking opening 113 or open the second smoking opening 113. Alternatively, in use, the second smoking opening 113 may be disposed near the cooktop plane p, and the first smoking opening 112 may be disposed at a side of the second smoking opening 113 away from the cooktop plane p, at which time, the second cover 16 may be moved in a direction away from the cooktop plane p to open the second smoking opening 113, and moved in a direction near the cooktop plane p to close the second smoking opening 113.

It should be noted that the first smoking port 112 and the second smoking port 113 may be independent from each other, that is, the first smoking port 112 and the second smoking port 113 are not communicated. The first smoking port 112 and the second smoking port 113 may also be connected to form a through hole, and a portion of the through hole is defined as the first smoking port 112 and a portion is defined as the second smoking port 113. When the first smoke absorbing opening 112 and the second smoke absorbing opening 113 are communicated to form a through hole, please refer to fig. 1 and fig. 2 again, if the first transmission member 141 drives the first cover plate 13 to rotate by using the first boundary line 131 as a rotation axis, the second transmission member 144 drives the second cover plate 16 to move in a direction away from the cooking bench plane p, at this time, an exposed area of the through hole on a side of the second cover plate 16 away from the cooking bench plane p may be defined as the first smoke absorbing opening 112, and an exposed area of the second cover plate 16 close to the cooking bench plane p may be defined as the second smoke absorbing opening 113.

Alternatively, the second transmission member 144 may be substantially a crank-slider mechanism to achieve the moving drive of the second cover plate 16. Specifically, referring to fig. 11, the second transmission member 144 may include a slide rail 1441, a sliding portion 1442, a fourth link 1443, and a fifth link 1444, wherein the slide rail 1441 is disposed on the mounting frame 17 in the box 11 and extends in a direction perpendicular to the central axis of the opening of the second smoking port 113. The sliding part 1442 is connected to the sliding rail 1441 and can slide along the length direction of the sliding rail 1441, and the second cover 16 is installed on the sliding part 1442. One end of the fourth link 1443 is rotatably connected to the sliding portion 1442, the other end of the fourth link 1443 is rotatably connected to one end of the fifth link 1444, the other end of the fifth link 1444 is connected to an output shaft of the driving member 15, and the fifth link 1444 is configured to rotate under the driving of the driving member 15, so that the second cover 16 slides along the length direction of the sliding rail 1441 along with the sliding portion 1442, and the second cover 16 is further configured to close the second smoking opening 113 or open the second smoking opening 113.

Further optionally, the sliding part 1442 includes a slider 14421, a first plate 14422 and a second plate 14423, and the slider 14421 is located in the sliding rail 1441 and can slide along the length direction of the sliding rail 1441. The first panel 14422 has the first face 14424 and the second face 14425 that distribute mutually, and the second apron 16 is located the one side that the second face 14425 of first panel 14422 belongs to and connects first panel 14422. The second plate 14423 is connected to the first plate 14422 and extends toward the first plate 14424 away from the second plate 14425; the first plate 14422 and the sliding block 14421 are located on two opposite sides of the second plate 14423 in a direction parallel to the first plate 14424, the second plate 14423 is connected with the sliding block 14421, and the second plate 14423 is rotatably connected with the fourth link 1443. Along the direction that is parallel to first face 14424, distribute first plate 14422 and slider 14421 in the opposite both sides of second plate 14423, can reduce the size of sliding part 1442 along the direction that is perpendicular to first face 14424, promote the compactness of sliding part 1442.

Further alternatively, the fourth link 1443, the slide rail 1441, and the slider 14421 may be located on the same side of the second plate 14423 in a direction parallel to the first plate 14424.

Alternatively, referring to fig. 9 and 11, the second pushing portion 14142 of the first transmission member 141 and the fifth connecting rod 1444 of the second transmission member 144 may share the same component. Specifically, if the second pushing portion 14142 and the fifth link 1444 share the same component, the fifth link 1444 may include a sixth connecting portion 1436, a seventh connecting portion 1437, and an eighth connecting portion 1438 that are spaced apart, the sixth connecting portion 1436 is rotatably connected to an end of the fourth link 1443 away from the sliding portion 1442, the seventh connecting portion 1437 is connected to the driving member 15, the eighth connecting portion 1438 is rotatably connected to an end of the first pushing portion 14141 away from the fifth connecting portion 1435, and a portion of the fifth link 1444 between the seventh connecting portion 1437 and the eighth connecting portion 1438 constitutes the second pushing portion 14142.

Alternatively, the sixth connection portion 1436, the seventh connection portion 1437, and the eighth connection portion 1438 may be located on the same straight line, or may form a triangle, which is not limited in this embodiment of the application. A pitch of the sixth to seventh connection parts 1436 to 1437 may be greater than a pitch of the eighth to seventh connection parts 1438 to 1437.

Optionally, the range hood 1 may further include an elastic member 18, and the elastic member 18 may extend along a length direction of the sliding rail 1441 and have two ends respectively connected to the mounting frame 17 and the sliding portion 1442. The sliding 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 acting force required by the driving member 15 to maintain the balance of the second cover plate 16 can be reduced, and the driving member 15 with small size and low cost can be selected. Alternatively, the elastic members 18 may be distributed in a vertical direction to maximally counteract the gravity of the second cover plate 16, thereby reducing the use cost of the driving member 15. The elastic member 18 may be any deformable member such as a spring, which is not limited in the embodiments of the present application.

Optionally, referring to fig. 12 and fig. 13, in an exemplary scheme, the range hood 1 may include a first mesh plate 191 and a connecting plate 192, the first mesh plate 191 is located on one side of an inner plate surface of the first cover plate 13, and a plurality of mesh holes 1911 are disposed 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 encloses with the first mesh plate 191 and the first cover plate 13 to form a smoke guide cavity 193, the smoke guide cavity 193 is communicated with the inner cavity 111 of the box body 11, the first mesh plate 191 is positioned in the box body 11 when the first cover plate 13 is positioned at the first position, the first mesh plate 191 is positioned outside the box body 11 when the first cover plate 13 is positioned at the second position, and the first smoke suction port 112 is communicated with the outside through meshes 1911.

Further alternatively, the first net plate 191 and the connecting plate 192 may be a unitary structure. The range hood 1 may further include a second connection piece 194, and the second connection piece 194 is connected between the connection plate 192 and the first cover plate 13. More specifically, the second connecting piece 194 may include a third piece (not shown) attached to the inner surface of the first cover 13 and a fourth piece 1941 attached to the outer peripheral surface of the connecting plate 192, and the third piece and the fourth piece 1941 are connected to connect the first mesh plate 191, the connecting plate 192 and the first cover 13.

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

Alternatively, when the first cover plate 13 is in the second position, the angle between the plate surface of the first mesh plate 191 and the cooking bench plane p may be greater than or equal to 12 ° and less than or equal to 20 °. Specifically, when the first cover plate 13 is in the second position, of the plate surface edge lines of the first mesh plate 191, an edge line close to the opening end surface of the first smoking port 112 may be located between an edge line far from the opening end surface of the first smoking port 112 and the cooktop plane p. It can be understood that: when the first cover plate 13 is in the second position, the plate surface of the first net plate 191 is opened obliquely upward instead of obliquely downward.

In still another exemplary scheme, referring to fig. 14 and 15, the range hood 1 may include a first mesh plate 191, the first mesh plate 191 is provided with a plurality of meshes, and the first mesh plate 191 is disposed corresponding to the first smoke suction port 112 and connected to the box body 11. The first smoking inlet 112 at the second position is communicated with the outside through the meshes on the first mesh plate 191. Because the first net plate 191 is connected with the box body 11, when the first cover plate 13 is switched between the first position and the second position, the first net plate 191 does not move along with the first cover plate 13, the requirement of driving force on the driving part 15 can be reduced, and the driving part 15 with small size and low cost can be selected. And the first screen plate 191 is directly connected with the box body 11, so that the structural stability of the first screen plate 191 after long-term use can be ensured, and falling off, scratching and the like are avoided.

Alternatively, the first net plate 191 may be connected to the mounting frame 17 inside the housing 11, thereby achieving the mounting of the first net plate 191 at the first smoking port 112.

Optionally, the range hood 1 may further include a second net plate (not shown in the figure) disposed at the second smoke suction port 113, the second net plate may be provided with meshes, and the second net plate may be connected to the box body 11. Alternatively, the second net plate can be connected to the mounting frame 17 in the box body 11, so as to realize the mounting of the second net plate at the second smoking port 113.

In another exemplary embodiment, no mesh plate may be disposed at each of the first smoke suction port 112 and the second smoke suction port 113, so that the oil smoke can directly enter the inner cavity 111 through the first smoke suction port 112 and the second smoke suction port 113.

Optionally, referring to fig. 3 and 4 again, the range hood 1 may further include a connection structure 195, and the connection structure 195 is connected between the second cover plate 16 and the second transmission member 144. More specifically, the connecting structure 195 may be attached and connected to the inner plate surface of the second cover plate 16, and the connecting structure 195 may be connected to the sliding portion 1442 of the second transmission member 144.

Alternatively, the driving member 15 may include a motor, and an output shaft of the driving member 15 may correspond to an output shaft of the motor. The motor has a first state and a second state, the first state drives the first transmission member 141 to move so that the first cover plate 13 is located at the first position, the second state drives the first transmission member 141 to move so that the first cover plate 13 is located at the second position, and when the motor is switched from the first state to the second state, the rotation stroke of the output shaft of the motor can be greater than or equal to 85 degrees and less than or equal to 95 degrees. The rotation stroke of the output shaft of the motor will influence the rotation stroke of the first cover plate 13 when being switched from the first position to the second position, namely, the opening degree of the first cover plate 13 to the first smoking port 112 is influenced, the rotation stroke of the output shaft of the motor is reasonably limited, and the good smoking effect of the first smoking port 112 can be ensured on the premise of reducing the power consumption of the motor.

Alternatively, when the first cover 13 is switched from the first position to the second position, the rotational stroke of the first cover 13 around the first boundary line 131 may be greater than or equal to 65 ° and less than or equal to 75 °. Alternatively, when the second lid 16 is switched from the third position to the fourth position, the movement stroke of the second lid 16 in the direction perpendicular to the central axis of the opening of the second smoking port 113 may be greater than or equal to 100mm and less than or equal to 110 mm.

Alternatively, the number of the first transmission members 141 may be two, the inner plate surface of the first cover 13 may have a second boundary line 132 and a third boundary line 133, the second boundary line 132 and the third boundary line 133 may be located on two opposite sides of the first boundary line 131, and the two first transmission members 141 are respectively located on one side of the second boundary line 132 of the first cover 13 and one side of the third boundary line 133 of the first cover 13.

The driving member 15 may be disposed corresponding to one of the first transmission members 141 and connected to one of the first transmission members 141, and the two first transmission members 141 are in transmission connection with each other through the transmission rod 142. Through setting up first transmission member 141 in the both sides of first apron 13, can promote the stationarity of first apron 13 motion in-process.

Both ends of the transmission rod 142 can be respectively mounted 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 identical in structure, and the two first transmission members 141 may be arranged substantially in a mirror image. Alternatively, when the number of the first transmission members 141 is two, the number of the mounting brackets 17 may also be two, and each of the mounting brackets 17 is disposed corresponding to one of the first transmission members 141.

Alternatively, the number of the second transmission members 144 may also be two, each second transmission member 144 is disposed corresponding to one first transmission member 141, and the two second transmission members 144 are also in transmission connection via the transmission rod 142. Alternatively, the two second transmission members 144 have the same structure, and the two second transmission members 144 may be arranged substantially in a mirror image.

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 exhaust 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 a thinner design of the range hood 1 on the basis of realizing the movement of driving the first cover plate 13 and the second cover plate 16.

Optionally, referring to fig. 1 again, the outer plate surface of the first cover plate 13 at the first position and the outer plate surface of the second cover plate 16 at the third position may be located on the same plane, so as to improve the appearance smoothness and the aesthetic property of the range hood 1, and facilitate cleaning.

Optionally, a gap between the first cover plate 13 and the second cover plate 16 at the first position may be greater than or equal to 3mm and less than or equal to 5mm, so as to reduce the gap between the first cover plate 13 and the second cover plate 16 on the premise of ensuring smooth opening and closing of the first cover plate 13.

It should be noted that the first smoke suction port 112 and/or the second smoke suction port 113 may be opened not only during cooking to suck smoke, but also during uncooked to purify the indoor air. Of course, the box 11 may be additionally provided with a vent 114 to purify the indoor air through the vent 114, which is not limited in the embodiment of the present application.

In an exemplary aspect, the ventilation opening 114 may be in communication with the first and/or second smoke suction ports 112 and 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 may be in communication with the outside through the ventilation opening 114. Optionally, referring to fig. 14 and 15, when the vent 114 is communicated with the first smoke exhaust port 112 and the first mesh plate 191 is disposed at the first smoke exhaust port 112, the first mesh plate 191 may also extend to the vent 114, so that the vent 114 is communicated with the outside through the mesh holes 1911 of the first mesh plate 191, thereby improving the safety of the range hood 1. Optionally, when the ventilation opening 114 is communicated with the second smoking opening 113, and a second mesh plate is arranged at the second smoking opening 113, the second mesh plate may also extend to the ventilation opening 114. In another exemplary arrangement, in conjunction with FIG. 1, the ventilation opening 114 can be separate from the first smoking opening 112 and separate from the second smoking opening 113. The ventilation opening 114 may include a plurality of small holes arranged at intervals to improve safety of the range hood 1.

Alternatively, the ventilation opening 114 may be located on a side of the first smoke suction opening 112 away from the cooktop plane p, or may be located on a side of the second smoke suction opening 113 close to the cooktop plane p, and the specific arrangement orientation of the ventilation opening 114 is not limited in the embodiments of the present application.

It should be noted that the ventilation opening 114 may not be provided on the range hood 1, so that the range hood 1 is approximately in a sealed state when the first cover plate 13 is at the first position and the second cover plate 16 is at the third position.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the specification and drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.

Claims (10)

1. A range hood, comprising:

the box body is provided with an inner cavity and a first smoke suction port communicated with the inner cavity;

the fan assembly is positioned in the inner cavity;

a first cover plate having a first position in which the first cover plate closes the first smoking port and a second position in which the first cover plate opens the first smoking port;

the transmission assembly comprises a transmission rod and more than two first transmission pieces, the more than two first transmission pieces are arranged in the inner cavity at intervals, and each first transmission piece is connected with the first cover plate and the transmission rod; the transmission rod is positioned in the inner cavity and on one side of the fan assembly, which is far away from the first smoke suction port, and the transmission rod is also positioned on one side of the first smoke suction port, which is close to the plane of the cooking bench, when the range hood is used;

and the driving part is connected with the transmission rod and/or at least one first driving part and is used for driving all the first driving parts to move so as to switch the first cover plate between the first position and the second position.

2. The range hood of claim 1, wherein the drive link is for being disposed between a first plane and the cooktop plane, the first plane being parallel to the cooktop plane and the axis of rotation of the fan assembly being located within the first plane.

3. The range hood according to claim 1, wherein the fan assembly is provided with an air inlet, an area surrounded by a projection of a contour line of the air inlet in a second plane is a first area, an area surrounded by a projection of a contour line of the first smoke suction opening in the second plane is a second area, at least part of the first area is located in the second area, and the second plane is perpendicular to a rotation axis of the fan assembly.

4. The range hood of claim 1, wherein the box body is further formed with a second smoke suction port communicated with the inner cavity, the range hood further comprises a second cover plate, and the transmission assembly further comprises:

and the second transmission piece is connected with the second cover plate, is also connected with at least one of the first transmission piece, the transmission rod and the driving piece and is used for driving the second cover plate to be switched between a third position and a fourth position, the second cover plate closes the second smoking hole in the third position, and the second cover plate opens the second smoking hole in the fourth position.

5. A range hood as set forth in claim 4, wherein the number of said second transmission members is equal to the number of said first transmission members, and each of said second transmission members is provided corresponding to one of said first transmission members; and/or

When the range hood is used, the second smoke suction port is arranged close to the plane of the cooking bench, and the first smoke suction port is positioned on one side, far away from the plane of the cooking bench, of the second smoke suction port; and/or

The inner plate surface of the first cover plate is provided with a first boundary line which is far away from the cooking bench plane when in use, and the first transmission piece is used for driving the first cover plate to rotate around the first boundary line when the driving piece drives to move so as to close the first smoke suction port or open the first smoke suction port; and/or

The second transmission part is used for driving the second cover plate to move along the direction perpendicular to the axis of the opening of the second smoking port when the driving part drives to move so as to close the second smoking port or open the second smoking port.

6. The range hood according to claim 4, wherein the first transmission member is connected to the driving member, the range hood further comprises a first structure portion and a second structure portion which are arranged in the box body at intervals, and the first transmission member comprises:

the first connecting rod comprises a first connecting part and a second connecting part which are arranged at intervals;

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

one end of the third connecting rod is rotatably connected with the second connecting part, and the other end of the third connecting rod is rotatably connected with the second structure part;

and the push rod is connected with the driving piece and the third connecting rod and used for pushing the third connecting rod and the second connecting rod to move under the driving of the driving piece so as to realize the switching of the first cover plate between the first position and the second position.

7. The range hood according to claim 6, wherein the third link comprises a third connecting portion, a fourth connecting portion and a fifth connecting portion, the third connecting portion, the fourth connecting portion and the fifth connecting portion are connected to form a triangle, the third connecting portion is rotatably connected with the second connecting portion, and the fourth connecting portion is rotatably connected with the second structural portion;

the push rod comprises a first pushing portion and a second pushing portion, one end of the first pushing portion is rotatably connected with the fifth connecting portion, the other end of the first pushing portion is rotatably connected with one end of the second pushing portion, and the other end of the second pushing portion is connected with the driving piece.

8. A range hood as claimed in claim 7, characterized in that said second transmission member comprises:

the sliding rail is arranged in the box body and extends along the direction vertical to the central axis of the opening of the second smoking port;

the sliding part is connected with the sliding rail and can slide along the length direction of the sliding rail, and the second cover plate is installed on the sliding part;

one end of the fourth connecting rod is rotatably connected with the sliding part; and

and one end of the fifth connecting rod is rotatably connected with the end, far away from the sliding part, of the fourth connecting rod, the other end of the fifth connecting rod is connected with the driving part and is used for rotating under the driving of the driving part so as to enable the second cover plate to slide along the length direction of the sliding rail along with the sliding part, and further the second cover plate is closed or opened at the second smoking port.

9. The range hood according to claim 8, wherein the fifth link includes a sixth connecting portion, a seventh connecting portion and an eighth connecting portion which are arranged at intervals, the sixth connecting portion is rotatably connected to an end of the fourth link, which is away from the sliding portion, the seventh connecting portion is connected to the driving member, the eighth connecting portion is rotatably connected to an end of the first pushing portion, which is away from the fifth connecting portion, and a portion of the fifth link, which is located between the seventh connecting portion and the eighth connecting portion, constitutes the second pushing portion.

10. A range hood as set forth in claim 1, wherein said first cover plate has a first edge line, a second edge line and a third edge line on its inner plate surface, said first edge line is located on a side of said first cover plate away from said cooktop plane when in use, said second edge line and said third edge line are located on opposite sides of said first edge line, said first transmission members are two in number, and said two first transmission members are respectively located on a side of said first cover plate where said second edge line is located and on a side of said first cover plate where said third edge line is located, said transmission rod is connected between said two first transmission members.

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