CN116697428A

CN116697428A - Fume exhaust fan

Info

Publication number: CN116697428A
Application number: CN202210189011.3A
Authority: CN
Inventors: 李佳阳; 司徒叠强; 张弘昌; 陈建伟
Original assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2023-09-05

Abstract

The invention discloses a range hood, which comprises a shell and a fan assembly, wherein the shell is provided with an inner cavity, a first smoke suction port and a second smoke suction port, the second smoke suction port is arranged close to the plane of a cooking bench, and the first smoke suction port is used for being positioned at one side of the second smoke suction port far away from the plane of the cooking bench when in use; the fan assembly is arranged in the inner cavity of the shell, the fan assembly is provided with an air inlet, the area surrounded by the projection of the contour line of the air inlet on the first plane is a first area, the area surrounded by the projection of the contour line of the first smoking opening on the first plane is a second area, more than 10% of the first area is positioned in the second area, and the first plane is perpendicular to the rotation axis of the fan assembly. The invention can make the dimension of the range hood in the direction along the rotation axis of the fan assembly thinner, namely the distance between the front plate and the rear plate of the fan assembly and the shell can be smaller, thereby reducing the pressing sense when a user uses the range hood and improving the use experience of the user.

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 the range hood sucks and discharges the oil smoke through a fan assembly arranged in the inner cavity of the range hood. The range hood in the related art has the problems that the range hood is large in size, occupies more space of a cabinet, and brings great pressing feeling to cooking staff during use.

Disclosure of Invention

The invention mainly aims to provide a range hood, and aims to solve the problems that the range hood in the related art is large in size, occupies more space of a cabinet, and brings great pressing feeling to cooking staff during use.

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

the shell is provided with an inner cavity, and a first smoke suction port and a second smoke suction port which are communicated with the inner cavity, wherein the second smoke suction port is used for being arranged close to a hearth plane when in use, and the first smoke suction port is used for being positioned at one side of the second smoke suction port away from the hearth plane when in use; a kind of electronic device with high-pressure air-conditioning system

The fan assembly is arranged in the inner cavity of the shell, the fan assembly is provided with an air inlet, an area surrounded by projection of a contour line of the air inlet on a first plane is a first area, an area surrounded by projection of a contour line of the first smoking opening on the first plane is a second area, more than 10% of the first area is located in the second area, and the first plane is perpendicular to the rotation axis of the fan assembly.

According to the technical scheme, the position relationship between the first smoke suction port on the shell and the air inlet on the fan assembly is limited, and the position relationship between the first smoke suction port and the second smoke suction port relative to the plane of the cooking bench is limited when the first smoke suction port and the second smoke suction port are used, so that the range hood can be thinner in the dimension along the rotation axis direction of the fan assembly, namely, the distance between the front plate and the rear plate of the fan assembly and the shell can be smaller, further, the pressing sense of a user during use can be reduced, and the use experience of the user is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a perspective view of a first range hood according to an embodiment of the present invention;

fig. 2 is a projection view of an air inlet, a first smoke suction port and a second smoke suction port on a first plane in the range hood shown in fig. 1;

fig. 3 is a projection view of a second plate body on a first plate body in a second range hood according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of the range hood shown in fig. 3;

fig. 5 is a cross-sectional view of a third range hood according to an embodiment of the present invention;

fig. 6 is a front view of a fourth range hood according to an embodiment of the present invention;

fig. 7 is a front view of an alternative to the shield plate in the range hood provided in fig. 6;

fig. 8 is a perspective view of the range hood shown in fig. 7;

fig. 9 is a perspective view of a fifth range hood according to an embodiment of the present invention when a first cover closes a first smoke suction port and a second cover closes a second smoke suction port;

Fig. 10 is a perspective view of a portion of the range hood shown in fig. 9 in which a first cover opens a first smoke suction port and a second cover opens a second smoke suction port;

fig. 11 is a perspective view of the first transmission member, the second transmission member and the mounting frame when the first cover plate opens the first smoke suction port and the second cover plate opens the second smoke suction port in the range hood shown in fig. 9;

fig. 12 is a perspective view of fig. 11 at another view angle;

fig. 13 is a perspective view of an alternative to the first transmission member, the second transmission member and the mounting bracket of the range hood shown in fig. 9 with the first cover opening the first smoke evacuation port and the second cover opening the second smoke evacuation port;

FIG. 14 is a perspective view of the first transmission member and mounting bracket of FIG. 13;

FIG. 15 is a perspective view of the second transmission member and mounting bracket of FIG. 13;

FIG. 16 is a perspective view of the first drive member, the second drive member and the mounting bracket of FIG. 13 from another perspective;

fig. 17 is a perspective view of a part of a sixth range hood according to an embodiment of the present invention when a first cover opens a first smoke suction port and a second cover opens a second smoke suction port;

FIG. 18 is a perspective view of the first drive member, the second drive member and a portion of the mounting bracket of FIG. 17;

FIG. 19 is a schematic view of the working principle of the first and second transmission members and the mounting bracket of FIG. 17;

Fig. 20 is a perspective view of an alternative to the first transmission member, the second transmission member and the mounting bracket of the range hood shown in fig. 17 with the first cover opening the first smoke evacuation port and the second cover opening the second smoke evacuation port;

fig. 21 is a perspective view of the first transmission member, the second transmission member, and the mounting bracket of the range hood shown in fig. 20 when the first cover plate closes the first smoke suction port and the second cover plate closes the second smoke suction port;

FIG. 22 is a perspective view of the first drive member, the second drive member, the mounting bracket and the resilient member of FIG. 17;

fig. 23 is a perspective exploded view of a part of a seventh range hood according to an embodiment of the present invention when a first cover opens a first smoke suction port and a second cover opens a second smoke suction port;

FIG. 24 is a perspective view of the first cover plate, first net plate and connecting plate of FIG. 23;

fig. 25 is a perspective view of an eighth range hood according to an embodiment of the present invention when a first cover opens a first smoke suction port and a second cover opens a second smoke suction port;

fig. 26 is a perspective view of a ninth range hood according to an embodiment of the present invention when a first cover opens a first smoke suction port and a second cover opens a second smoke suction port;

fig. 27 is a perspective view of a tenth range hood according to an embodiment of the present invention when a first cover closes a first smoke suction port and a second cover closes a second smoke suction port;

Fig. 28 is a perspective view of the range hood shown in fig. 27 with the first lid opening the first smoke evacuation port and the second lid opening the second smoke evacuation port.

Reference numerals illustrate: 1. a range hood; 11. a housing; 111. an inner cavity; 112. a first smoke suction port; 1121. a second region; 113. a second smoking port; 1131. a third region; 114. a first plate body; 1141. a first edge; 1142. a second edge; 115. a second plate body; 1151. a third edge; 1152. a fourth edge; 116. a side plate; 1161. a first side plate; 1162. a second side plate; 117. a first deflector; 118. a second deflector; 119. a shielding plate; 110. a vent; 12. a fan assembly; 121. an air inlet; 1211. a first region; 1212. an axis of rotation; 122. a front plate; 123. a rear plate; 124. a safety net; 13. a first cover plate; 131. a first boundary line; 132. a first edge; 133. a second edge; 141. a first transmission member; 1411. a first link; 1412. a second link; 14121. a first sub-section; 14122. a second sub-section; 14123. a clamping protrusion; 1413. a third link; 14131. a third sub-section; 14132. a fourth sub-section; 14133. a first surface; 1414. a baffle; 14141. a first opening; 1415. a first push rod; 1416. a second push rod; 142. a second transmission member; 1421. a slide rail; 1422. a sliding part; 1423. a fourth link; 1424. a fifth link; 1425. a slide block; 1426. a third plate body; 14261. a third panel; 14262. a fourth panel; 1427. a fourth plate body; 1431. a first connection location; 1432. a second connection location; 1433. a third connection site; 1434. a fourth connection site; 1435. a fifth connection site; 1436. a sixth connection site; 1437. a seventh connection bit; 1438. an eighth connection bit; 144. a transmission rod; 15. a driving member; 151. a motor; 16. a mounting frame; 161. a first structure portion; 162. a second structure portion; 163. a limit structure; 164. a mounting plate; 1641. a first panel; 1642. a second panel; 165. a bracket; 1651. a first portion; 1652. a second portion; 1653. a bending part; 17. a second cover plate; 18. an elastic member; 191. a first screen; 1911. a mesh; 192. a connecting plate; 193. a smoke guiding cavity; 194. a first connector; 1941. a second connecting piece; 195. a second connector; 196. a second screen; 197. an oil cup; 198. a check valve; p, a hearth plane; a. a first plane; x, a first direction; y, central axis.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present application may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present application.

Referring to fig. 1, an embodiment of the present application provides a range hood 1, where the range hood 1 includes a housing 11 and a fan assembly 12. The housing 11 is formed with an inner chamber 111, and a first smoke suction port 112 and a second smoke suction port 113 communicating with the inner chamber 111. The fan assembly 12 is located in the inner cavity 111, the fan assembly 12 has an air inlet 121 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/or the second smoke suction port 113, and the kitchen is not filled with the oil smoke, so that the cooking experience of a user can be improved.

Specifically, the second smoke absorbing port 113 is configured to be located close to the cooktop plane p in use, and the first smoke absorbing port 112 is configured to be located on a side of the second smoke absorbing port 113 away from the cooktop plane p in use. For example, the range hood 1 is placed above the cooking bench plane p when in use, the first smoke suction port 112 and the second smoke suction port 113 on the range hood 1 are both located above the cooking bench plane p, and the first smoke suction port 112 is located above the second smoke suction port 113.

In order to ensure that the range hood 1 has a better oil smoke absorbing effect, referring to fig. 1 and 2, if an area surrounded by the projection of the contour line of the air inlet 121 of the fan assembly 12 on the first plane a is defined as a first area 1211, an area surrounded by the projection of the contour line of the first air suction opening 112 on the first plane a is defined as a second area 1121, and more than 10% of the first area 1211 may be located in the second area 1121. Wherein the first plane a is perpendicular to the rotational axis 1212 of the fan assembly 12.

More than 10% of the first region 1211 is located within the second region 1121, which can be generally understood as: more than 10% of the area surrounded by the whole opening of the air inlet 121 is opposite to the first smoke suction port 112, so as to ensure that the first smoke suction port 112 has enough negative pressure suction force, and further ensure the oil smoke absorption effect at the first smoke suction port 112.

Alternatively, if a region surrounded by the projection of the contour line of the second smoke exhaust 113 on the first plane a is defined as the third region 1131, the maximum dimension h1 of the third region 1131 in the direction perpendicular to the hob plane p may be greater than or equal to 50mm. In this way, the opening area of the second smoke suction port 113 can be ensured to be large enough to facilitate the absorption of the smoke. Alternatively, at least a portion of the first region 1211 may be located within the third region 1131.

Alternatively, the axis of rotation 1212 of the fan assembly 12 may be parallel to the cooktop plane p, in which case the first plane a perpendicular to the axis of rotation 1212 would be perpendicular to the cooktop plane p. It should be noted that, the rotation axis 1212 of the fan assembly 12 may also intersect the cooking bench plane p, for example, an acute angle between the rotation axis 1212 of the fan assembly 12 and the cooking bench 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.

Optionally, referring again to fig. 1, the housing 11 includes a first plate 114 and a second plate 115 disposed on opposite sides of the fan assembly 12 along a direction of a rotational axis 1212 of the fan assembly 12, and the first plate 114 may have a first smoke suction port 112 and a second smoke suction port 113 disposed thereon. The first smoke suction port 112 and the second smoke suction port 113 are designed on the same plate body, so that the processing and the manufacturing are convenient. Alternatively, the first plate 114 and the second plate 115 may be substantially parallel. The first plate 114 and the second plate 115 are substantially flat plates.

The housing 11 may further include a side plate 116 connected between the first plate 114 and the second plate 115, and the first plate 114, the second plate 115, and the side plate 116 may collectively enclose the cavity 111.

Optionally, in an exemplary embodiment, referring to fig. 3, the outer contour of the inner surface of the first plate 114 may have a first edge 1141 and a second edge 1142 that are oppositely disposed along the first direction x, the projected pattern of the outer contour of the inner surface of the second plate 115 on the inner surface of the first plate 114 may have a third edge 1151 and a fourth edge 1152 that are oppositely disposed along the first direction x, the third edge 1151 may be located between the first edge 1141 and the second edge 1142, and the fourth edge 1152 may be located between the first edge 1141 and the second edge 1142. Wherein the first direction x is perpendicular to the rotational axis 1212 of the fan assembly 12 and parallel to the cooktop plane p. In this way, the width dimension of the inner cavity 111 of the housing 11 along the first direction x at the first plate 114 is smaller than the dimension along the first direction x at the second plate 115, which is beneficial to the ventilation of the air flow in the range hood 1.

Alternatively, in the first direction x, the spacing between the third and fourth lines 1151 and 1152 may be at least 60mm smaller than the spacing between the first and second lines 1141 and 1142.

Optionally, referring to fig. 4, the side plate 116 may include a first side plate 1161 and a second side plate 1162 spaced apart along the first direction x, and an angle between the first side plate 1161 and the first plate 114 may be greater than or equal to 30 ° and less than 90 °. The angle between the second plate 1162 and the first plate 114 may be greater than or equal to 30 ° and less than 90 °.

In another exemplary embodiment, referring to fig. 5, the range hood 1 may include at least one first deflector 117, the first deflector 117 being located in the inner cavity 111 of the housing 11, the first deflector 117 being located at one side of the fan assembly 12 along the first direction x; one end of the first deflector 117 is connected to an edge of the first plate 114 on one side of the fan assembly 12 in the first direction x, and the other end extends toward a direction approaching the second plate 115; and the distance between the first deflector 117 and the rotation axis 1212 gradually decreases in the direction from the first plate 114 to the second plate 115.

When the first guide plate 117 is arranged in the range hood 1, the structural adjustment of the inner cavity 111 can be realized by means of the first guide plate 117, so that the diversity of the structural design of the side plate 116 can be realized. For example, this can be achieved by means of the first deflector 117: the width dimension of the interior cavity 111 of the housing 11 at the first plate 114 in the first direction x is smaller than the dimension at the second plate 115 in the first direction x.

Alternatively, the number of the first deflectors 117 may be two, and the two first deflectors 117 are distributed on two opposite sides of the fan assembly 12 along the first direction x, so that the air intake on two sides of the fan assembly 12 is approximately balanced, and the oil smoke absorbing effect on two sides of the fan assembly 12 is approximately balanced.

Optionally, referring to fig. 1 again, the range hood 1 includes at least one second deflector 118, the second deflector 118 is located in the inner cavity 111 of the housing 11, the second deflector 118 is located at one side of the fan assembly 12 along the first direction x, one end of the second deflector 118 is connected to an edge of the first plate 114 near the cooking bench plane p, and the other end extends towards a direction near the second plate 115; and the distance between the second deflector 118 and the rotation axis 1212 gradually decreases in the direction from the first plate 114 to the second plate 115. Through the arrangement, the negative pressure at the second smoke suction port 113 close to the hearth plane p can be regulated and controlled, so that the lampblack can enter the second smoke suction port 113 more easily. Further alternatively, the angle between the second baffle 118 and the cooktop plane p may be greater than or equal to 30 ° and less than or equal to 60 °.

Optionally, referring to fig. 6, the range hood 1 may further include a shielding plate 119, where the shielding plate 119 is located in the inner cavity 111 and is disposed corresponding to the second smoke exhaust 113, and the shielding plate 119 shields the fan assembly 12 along the direction of the rotation axis 1212. So that when the range hood 1 is used by a user, the part of the fan assembly 12 at the second smoke suction port 113 is shielded by the shielding plate 19, and the range hood is better in aesthetic property. Alternatively, to secure the smoking effect at the second smoking port 113, the area of the second smoking port 113 corresponding to the shielding plate 119 may be less than or equal to 40% of the total area of the second smoking port 113.

Further alternatively, the spacing between the shielding plate 119 and the first side plate 1161 may be substantially equal to the spacing between the shielding plate 119 and the second side plate 1162. The shielding plate 119 is approximately distributed in the middle, and the attractiveness of the range hood 1 is improved.

Alternatively, referring to fig. 6 to 8, the shielding plate 119 may have a substantially rectangular shape, a trapezoidal shape, or the like. When the shielding plate 119 is substantially trapezoidal, an upper bottom of the trapezoid may be disposed near the hearth plane p, and a lower bottom of the trapezoid may be located at a side of the upper bottom away from the hearth plane p. The shielding plate 119 may be any other shape, and the embodiment of the present application is not limited thereto.

Alternatively, referring to fig. 4 and 5 again, the fan assembly 12 includes a front plate 122, a rear plate 123 disposed opposite to the front plate 122, and the air inlet 121 is disposed on the front plate 122. To enhance the safety performance of the fan assembly 12, the fan assembly 12 may further include a safety net 124, and the safety net 124 may be disposed at the front plate 122 and cover the air inlet 121. Alternatively, the middle portion of the safety net 124 may be convex toward a direction away from the front plate 122.

Alternatively, the rotational axis 1212 of the fan assembly 12 may be spaced apart from the central axis y of the housing 11. Preferably, the spacing between the axis of rotation 1212 of the fan assembly 12 and the central axis y of the housing 11 is less than or equal to 100mm. The distance between the rotation axis 1212 and the central axis y is controlled within 100mm, so that smoking difference of the left side and the right side of the fan assembly 12 can be reduced on the premise of meeting the installation requirement.

Optionally, referring again to fig. 6, the range hood 1 further includes a check valve 198, the check valve 198 being located at the top of the housing 11. Optionally, a distance h2 between the left end point of the check valve 198 and the central axis y of the range hood 1 is less than or equal to 250mm; preferably less than or equal to 200mm. Optionally, the distance between the right end point of the check valve 198 and the central axis y of the range hood 1 is less than or equal to 250mm; preferably less than or equal to 200mm. Therefore, the whole machine equipment can be adapted to the existing cabinet structure, the European style changing user does not need to adjust the cabinet, and the suitability is stronger.

Optionally, the range hood 1 further includes a first cover plate 13 disposed corresponding to the first smoke suction port 112, where the first cover plate 13 has a first position and a second position, and the first cover plate 13 closes the first smoke suction port 112 in the first position, see fig. 9; in the second position, the first cover 13 opens the first smoking opening 112, see fig. 8. For example, when the range hood 1 is idle, the first cover 13 may be in the first position to close the first smoke exhaust 112, so as to prevent dust and the like from entering the inner cavity 111 of the housing 11 through the first smoke exhaust 112, or prevent the fan assembly 12 from being damaged due to exposure. When the range hood 1 works, the first cover plate 13 can 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.

Further, in the second position, a distance between a side line of the first cover 13 near the second smoke suction port 113 and the second plane b may be greater than a distance between a side line of the first cover 13 far from the second smoke suction port 113 and the second plane b, where the second plane b is perpendicular to the opening central axis of the first smoke suction port 112 and is located at one side of the first cover 13 near the first smoke suction port 112. Thus, in the second position, a smoke gathering section can be formed between the first cover plate 13 and the first plate 114, and one end of the smoke gathering section, which is close to the second smoke suction port 113, is wider, and one end, which is far away from the second smoke suction port 113, is narrower; it can be understood that the end of the smoke collecting section, which is close to the hearth plane p, is wider, and the end, which is far away from the hearth plane p, is narrower, so that the smoke generated at the hearth plane p can enter the smoke collecting section through a wider opening, and the smoke inlet amount is ensured. And the oil smoke entering the smoke gathering section can be blocked by the inner plate surface of the opened first cover plate 13 so as to enter the first smoke suction port 112; that is, the opened first cover plate 13 can guide the oil smoke transmission, so that the smoke inlet amount at the first smoke suction port 112 can be improved, and the using effect of the range hood 1 can be improved.

It should be noted that, the space distance between the safety net 124 on the fan assembly 12 and the housing 11 and the first cover 13 in any state may be greater than or equal to 2mm, so as to ensure the normal operation of the range hood 1 and avoid scratch.

Referring to fig. 10, the range hood 1 may further include a first transmission member 141 and a driving member 15, where the first transmission member 141 is connected to the driving member 15 and the first cover 13, and is configured to drive the first cover 13 to switch between a first position and a second position under the driving of the driving member 15.

Alternatively, the first transmission member 141 may be configured to rotate the first cover 13 relative to the opening end surface of the first smoke suction port 112 when the driving member 15 drives to move, so as to close the first smoke suction port 112 or open the first smoke suction port 112. That is, the first cover 13 is turned over to open and close the first smoke suction port 112, so that the range hood 1 can be miniaturized compared with the case where the first cover 13 is translated in the direction perpendicular to the central axis of the opening of the first smoke suction port 112 to open and close the first smoke suction port 112. For example, the inner surface of the first cover plate 13 has a first boundary line 131 far from the cooking bench plane p, and the first cover plate 13 can rotate about the first boundary line 131 as a rotation axis to open and close the first smoke suction port 112.

In a first exemplary embodiment, the first transmission member 141 may be substantially in the form of a four bar linkage to transmit rotation of the first cover plate 13. Specifically, referring to fig. 11 and 12, the range hood 1 may include a first structure portion 161 and a second structure portion 162 installed in the housing 11 and spaced apart from each other. The first transmission member 141 may include a first link 1411, a second link 1412 and a third link 1413, wherein the first link 1411 has a first connection position 1431 and a second connection position 1432 which are spaced apart; one end of the second link 1412 is rotatably connected to the first link 1411 at a first connection position 1431, and the other end is rotatably connected to the first structure portion 161; one end of the third link 1413 is rotatably connected to the second connecting portion 1432 of the first link 1411, and the other end is rotatably connected to the second structure portion 162. One of the first link 1411, the second link 1412 and the third link 1413 may be provided with the first cover plate 13, and the other of the first link 1411, the second link 1412 and the third link 1413 may be connected with an output shaft of the driving member 15, for rotating under the driving of the driving member 15, so that the first cover plate 13 rotates relative to an opening end surface of the first smoke suction port 112, thereby realizing that the first cover plate 13 closes the first smoke suction port 112 or opens the first smoke suction port 112.

Wherein, one of the first link 1411, the second link 1412 and the third link 1413 mounts the first cover plate 13, which may be: any one of the first link 1411, the second link 1412, and the third link 1413 is attached to the first cover 13 and connected thereto by screws or the like. In the embodiment of the present application, the first link 1411 is attached to the first cover 13 and connected by a screw. The other of the first link 1411, the second link 1412, and the third link 1413 is connected to the output shaft of the driving member 15, and may be: any one of the first connection position 1431 of the first link 1411, the second connection position 1432 of the first link 1411, the second link 1412 near the first connection position 1431, the second link 1412 near the first structure portion 161, the third link 1413 near the second connection position 1432, and the third link 1413 near the second structure portion 162 is fixedly connected with the output shaft of the driving member 15, so as to be driven by the output shaft of the driving member 15 to rotate. In the embodiment of the present application, the second connecting rod 1412 is fixedly connected to the output shaft of the driving member 15 near the first structural portion 161.

The first structure portion 161 and the second structure portion 162 may be directly attached to the housing 11. At least one of the first structure portion 161 and the second structure portion 162 may be mounted on the mounting frame 16 in the housing 11, and the driving member 15 may be mounted on the mounting frame 16.

Alternatively, the first and second structural portions 161 and 162 may be only partial structures in the mounting frame 16. Specifically, a part of the structure of the mounting bracket 16 may be defined as the first structure portion 161, and a part of the structure may be defined as the second structure portion 162 without additionally providing the first structure portion 161 and the second structure portion 162, so as to simplify the structure of the range hood 1. Of course, the first structure portion 161 and/or the second structure portion 162 may also be a structure different from the mounting frame 16, which is not limited by the embodiment of the present application.

Optionally, a limiting structure 163 (shown in fig. 13) may be provided on the mounting frame 16, and the limiting structure 163 may be used to limit the movement of the first cover 13 to the second position, so that the first cover 13 is more accurately opened to the second position.

Alternatively, the limiting structure 163 may be a flange. That is, the stopper 163 is formed by partially folding the mounting frame 16. The limit structure 163 may be provided corresponding to the second link 1412 and/or the third link 1413. Optionally, a catch may be provided on the second link 1412 and/or the third link 1413, which when moved to abut the limit structure 163, indicates that the first cover 13 is moved to the second position. Alternatively, the movement of the first cover plate 13 to the first position is indicated when, of the edges of the inner plate surface of the first cover plate 13, a portion of the edges close to the hob plane p contacts the opening end surface of the first smoke suction port 112.

In a second exemplary embodiment, referring to fig. 13 to 16, the structure of the present embodiment is substantially the same as that of the first embodiment, except that: in the first scheme, the first link 1411, the second link 1412, and the third link 1413 of the first transmission 141 constitute a four-bar linkage together with the mount 16. In this embodiment, the first transmission member 141 and the mounting frame 16 may together form a six-bar mechanism to realize rotation transmission of the first cover 13.

Specifically, the second link 1412 may be split to include a first sub-portion 14121 and a second sub-portion 14122 distributed along a length direction thereof, one end of the first sub-portion 14121 is rotatably connected to the first connecting position 1431 of the first link 1411, the other end of the first sub-portion 14121 is rotatably connected to one end of the second sub-portion 14122, and the other end of the second sub-portion 14122 is rotatably connected to the first structural portion 161. The third link 1413 may be split into a third sub-portion 14131 and a fourth sub-portion 14132 distributed along a length direction thereof, one end of the third sub-portion 14131 is rotatably connected to the second connection position 1432 of the first link 1411, the other end of the third sub-portion 14131 is rotatably connected to one end of the fourth sub-portion 14132, and the other end of the fourth sub-portion 14132 is rotatably connected to the second structure portion 162. The middle portion of the first sub-portion 14121 is also rotatably coupled to the middle portion of the fourth sub-portion 14132. At this time, the first cover plate 13 is mounted on the first link 1411, and one end of the second sub-portion 14122 away from the first sub-portion 14121 or one end of the fourth sub-portion 14132 away from the third sub-portion 14131 is connected to the output shaft of the driving member 15.

Taking the example that the end of the second sub-portion 14122 away from the first sub-portion 14121 is connected to the output shaft of the driving member 15, when the first cover 13 is switched from the first state to the second state, the second sub-portion 14122 not only drives the end of the third sub-portion 14131 away from the fourth sub-portion 14132 to move towards the outside of the first smoking opening 112, but also drives the end of the first sub-portion 14121 away from the second sub-portion 14122 to move towards the outside of the first smoking opening 112 under the driving of the driving member 15. That is, when the first cover 13 is switched from the first position to the second position, the first connecting position 1431 and the second connecting position 1432 of the first link 1411 connected to the first cover 13 are both moved toward the outside of the first smoke suction port 112 by the driving of the driving member 15, so that the first cover 13 is not easily blocked by the housing 11 in the process of moving outward, and even if the inner plate surface of the first cover 13 is attached to the opening end surface of the first smoke suction port 112 in the first position, the first cover 13 can be smoothly opened, and the structural compactness of the range hood 1 can be improved.

Optionally, the fourth sub-portion 14132 has a first surface 14133 and a second surface (not shown) that are oppositely disposed along the rotation axis direction thereof, and the first link 1411, the third sub-portion 14131, and the first sub-portion 14121 are all located on a side of the first surface 14133 of the fourth sub-portion 14132. The first transmission member 141 may further include a baffle 1414, the baffle 1414 being located on the same side of the first sub-portion 14121 as the fourth sub-portion 14132 and being connected to the first link 1411. The fourth sub-portion 14132 and the baffle 1414 are disposed on one side, and the first link 1411, the third sub-portion 14131 and the first sub-portion 14121 are disposed on one side, so that when the range hood 1 is assembled, the side on which the baffle 1414 and the fourth sub-portion 14132 are disposed is directed toward the outside of the range hood 1, and the side on which the first link 1411, the third sub-portion 14131 and the first sub-portion 14121 are disposed is disposed on the inside, and can be shielded by the baffle 1414, so that the structure is more attractive. It should be noted that the second sub-portion 14122 may be located on the same side as the fourth sub-portion 14132 and the baffle 1414, which is not limited in the embodiment of the present application.

Alternatively, the thickness of the fourth sub-portion 14132, the thickness of the baffle 1414, and the thickness of the second sub-portion 14122 may be approximately equal. The thickness of the third sub-portion 14131 and the thickness of the first sub-portion 14121 can be approximately equal, so that the thickness of the first transmission member 141 is relatively thin and light, and the structure is relatively neat and compact. The thickness of the fourth sub-portion 14132 may be a thickness dimension along a direction perpendicular to the first surface 14133, and the thickness of the baffle 1414, the thickness of the second sub-portion 14122, the thickness of the third sub-portion 14131, and the thickness of the first sub-portion 14121 may be thickness dimensions along a direction perpendicular to the first surface 14133, respectively.

Further alternatively, the baffle 1414 may be provided with a first opening 14141, and the fourth sub-portion 14132 is rotatably connected to one end of the third sub-portion 14131 so as to extend to the first opening 14141. The fourth sub-portion 14132 is extended to the first opening 14141 of the baffle 1414, so that when the first cover plate 13 is opened, a gap between the baffle 1414 and the fourth sub-portion 14132 can be reduced, a clamping phenomenon can be avoided, the safety of the range hood 1 is improved, and meanwhile, the range hood has a certain aesthetic property.

Optionally, the limit structure 163 of the mounting bracket 16 may be provided corresponding to the second sub-portion 14122 and/or the fourth sub-portion 14132. In the embodiment of the present application, the limiting structure 163 is disposed corresponding to the second sub-portion 14122, and the second sub-portion 14122 is provided with the clamping protrusion 14123, and when the clamping protrusion 14123 of the second sub-portion 14122 moves to abut against the limiting structure 163, it indicates that the first cover 13 moves to the second position.

In a third exemplary scenario, referring to fig. 17-20, the present scenario is substantially identical to the first scenario in structure, except that: in the first scheme, the first link 1411, the second link 1412, and the third link 1413 of the first transmission 141 constitute a four-bar mechanism together with the mount 16, and one of the first link 1411, the second link 1412, and the third link 1413 is connected with the output shaft of the driving member 15. In this embodiment, the first transmission member 141 further includes a pushing member, and one of the first link 1411, the second link 1412, and the third link 1413 is connected to the output shaft of the driving member 15 through the pushing member.

Specifically, referring to fig. 18 and 19, the second link 1412 mounts the first cover plate 13, the pushing member includes a first push rod 1415 and a second push rod 1416, the first push rod 1415 is rotatably connected with a third connection position 1433 of the third link 1413, the third connection position 1433, a fourth connection position 1434 of the third link 1413 rotatably connected with a second connection position 1432 of the first link 1411, and a fifth connection position 1435 of the third link 1413 rotatably connected with the second structure portion 162 form a triangle; one end of the second push rod 1416 is rotatably connected with one end of the first push rod 1415 away from the third connection position 1433, and the other end is connected with an output shaft of the driving member 15.

The second push rod 1416 is driven by the output shaft of the driving member 15 to push the first push rod 1415 to move, and the first push rod 1415 further drives the third link 1413 to rotate around the fifth connection position 1435, so that the second link 1412 forming a four-link mechanism together with the third link 1413 rotates around the first structure portion 161, thereby opening and closing the first smoking port 112 by the first cover plate 13.

Alternatively, the third link 1413 may be generally of a tripod type with a hollow interior; referring to fig. 20, the third link 1413 may be generally curved knife shaped; the embodiment of the present application is not limited to the specific shape of the third link 1413.

Alternatively, in connection with fig. 18, the spacing structure 163 of the mounting bracket 16 may be a flange. Specifically, the edge portion of the mounting frame 16 may be bent to form a limiting structure 163, and the limiting structure 163 is used for limiting the limiting position of the second push rod 1416 rotating clockwise and counterclockwise along with the output shaft of the driving member 15.

Alternatively, the mounting frame 16 may have a substantially plate-like structure. The mounting frame 16 has a fifth plate surface and a sixth plate surface which are distributed oppositely, and the first push rod 1415, the second push rod 1416 and the third connecting rod 1413 can be positioned on one side of the mounting frame 16 where the fifth plate surface is positioned; the first link 1411, the second link 1412, and the driving member 15 in the first transmission member 141 may be located at a side of the sixth plate surface of the mounting frame 16.

Alternatively, second link 1412 may be substantially hooked such that second link 1412 defines a back-out region. Therefore, when the first transmission member 141 drives the first cover plate 13 to turn over and open, the avoiding section at the second connecting rod 1412 can avoid the casing 11, so that the movement of the first transmission member 141 is smoother.

Optionally, referring to fig. 8 and 9 again, the range hood 1 further includes a second cover plate 17 corresponding to the second smoke exhaust port 113, where the second cover plate 17 has a third position and a fourth position, and the second cover plate 17 closes the second smoke exhaust port 113 in the third position, see fig. 9; in the four positions the second cover 17 opens the second smoking opening 113, see fig. 8. For example, when the range hood 1 is at rest, the second cover plate 17 may be in the third position to close the second smoke suction port 113, so as to prevent dust and the like from entering the inner cavity 111 of the housing 11 through the second smoke suction port 113, or prevent the fan assembly 12 from being exposed to damage. And when the range hood 1 works, the second cover plate 17 can be in the fourth position to open the second smoke suction port 113, so that the oil smoke can be sucked into the inner cavity 111 through the second smoke suction port 113 after the fan assembly 12 is started.

Alternatively, the first cover 13 is in the first position when the second cover 17 is in the third position, and the first cover 13 is in the second position when the second cover 17 is in the fourth position. So that when the first cover plate 13 closes the first smoking opening 112, the second cover plate 17 closes the second smoking opening 113; when the first cover 13 opens the first smoking opening 112, the second cover 17 opens the second smoking opening 113.

It should be noted that, when the second cover 17 is in the third position, the first cover 13 may be in the second position, and when the second cover 17 is in the fourth position, the first cover 13 may be in the first position. The opening of the first cover plate 13 and the second cover plate 17 is asynchronous, so that 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.

It should be noted that, the space distance between the safety net 124 on the fan assembly 12 and the second cover plate 17 in any state should be greater than or equal to 2mm, so as to ensure the normal operation of the range hood 1 and avoid scratch.

Referring to fig. 10 again, the range hood 1 may further include a second transmission member 142, where the second transmission member 142 is connected to the driving member 15 and the second cover 17, and is configured to switch the second cover 17 between the third position and the fourth position under the driving of the driving member 15.

Alternatively, the second transmission member 142 may be configured to drive the second cover 17 to move in a direction perpendicular to the central axis of the opening of the second smoke suction port 113 when the driving member 15 drives to move, so as to close the second smoke suction port 113 or open the second smoke suction port 113. Alternatively, the second cover plate 17 may be moved in a direction approaching the first cover plate 13 to effect opening of the second smoking openings 113, and moved in a direction away from the first cover plate 13 to effect closing of the second smoking openings 113.

The first smoke suction port 112 and the second smoke suction port 113 may be independent from each other, that is, the first smoke suction port 112 and the second smoke suction port 113 do not communicate. The first and second smoking openings 112, 113 may also communicate to form a through-hole, with a portion of the through-hole being defined as the first smoking opening 112 and a portion being defined as the second smoking opening 113. When the first smoke absorbing port 112 and the second smoke absorbing port 113 are connected to form a through hole, if the first driving member 141 drives the first cover 13 to rotate about the first boundary line 131, the second driving member 142 drives the second cover 17 to move along the direction close to the first cover 13, at this time, the exposed area of the through hole on the side of the second cover 17 close to the first cover 13 may be defined as the first smoke absorbing port 112, and the exposed area of the through hole on the side of the second cover 17 far from the first cover 13 may be defined as the second smoke absorbing port 113.

Alternatively, the second transmission member 142 may be substantially a crank block mechanism to achieve the moving driving of the second cover 17. Specifically, referring to fig. 11, the second transmission member 142 may include a sliding rail 1421, a sliding portion 1422, a fourth link 1423, and a fifth link 1424, where the sliding rail 1421 is disposed on the mounting rack 16 and extends along a direction perpendicular to the central axis of the opening of the second smoking port 113. The sliding portion 1422 is connected to the sliding rail 1421 and can slide along the length direction of the sliding rail 1421, and the second cover 17 is mounted on the sliding portion 1422. One end of the fourth link 1423 is rotationally connected with the sliding portion 1422, the other end is rotationally connected with one end of the fifth link 1424, the other end of the fifth link 1424 is connected with the output shaft of the driving member 15, and the fifth link 1424 is used for rotating under the driving of the driving member 15, so that the second cover plate 17 slides along the length direction of the sliding rail 1421 along with the sliding portion 1422, and further the second cover plate 17 closes the second smoke suction port 113 or opens the second smoke suction port 113.

Further alternatively, in one possible solution, the sliding portion 1422 may include a sliding block 1425, a third plate 1426, and a fourth plate 1427, where the sliding block 1425 is located in the sliding rail 1421 and can slide along the length direction of the sliding rail 1421. The third plate 1426 has a third plate 14261 and a fourth plate 14262 that are distributed opposite to each other, the slider 1425 is located on a side of the third plate 1426 where the third plate 14261 is located and is connected to the third plate 1426, and the second cover 17 is located on a side of the third plate 1426 where the fourth plate 14262 is located and is connected to the third plate 1426. The fourth plate 1427 is connected to the third plate 1426 and extends in a direction away from the fourth plate 14262 toward the third plate 14261, and the fourth plate 1427 is rotatably connected to the fourth link 1423. That is, the sliding block 1425 and the fourth plate 1427 are disposed on the side of the third plate 14261 of the third plate 1426, so that the size of the sliding portion 1422 along the direction perpendicular to the third plate 14261 can be reduced, and the compactness of the sliding portion 1422 can be improved.

Alternatively, the mounting frame 16 may include a mounting plate 164 and a bracket 165, where the mounting plate 164 is disposed corresponding to the first smoke suction port 112, the mounting plate 164 may be substantially in a plate structure parallel to the central axis of the opening of the first smoke suction port 112, and the driving member 15, the first structure portion 161, and the second structure portion 162 are disposed on the board surface of the mounting plate 164.

Further alternatively, referring to fig. 11 and 12, the mounting plate 164 may have a first plate surface 1641 and a second plate surface 1642 that are disposed opposite to each other, and the first structure portion 161, the second structure portion 162, and the first transmission member 141 may be located on a side of the first plate surface 1641 of the mounting plate 164. The driving member 15 and the bracket 165 may be located on a side of the second plate surface 1642 of the mounting plate 164.

The bracket 165 may include a first portion 1651 disposed corresponding to the first smoke-absorbing mouth 112 and a second portion 1652 disposed corresponding to the second smoke-absorbing mouth 113, where the first portion 1651 is connected to the mounting plate 164, the second portion 1652 is connected to the first portion 1651, and a portion of the second portion 1652 near the second smoke-absorbing mouth 113 may be bent substantially toward the first plate surface 1641 away from the second plate surface 1642 to form a bending portion 1653. At this time, the sliding rail 1421 of the second transmission member 142 may be mounted on the bending portion 1653 of the second portion 1652.

In yet another possible solution, referring to fig. 22, the sliding portion 1422 includes a sliding block 1425, a third plate 1426, and a fourth plate 1427, where the sliding block 1425 is located in the sliding rail 1421 and can slide along the length direction of the sliding rail 1421. The third plate 1426 has a third plate 14261 and a fourth plate 14262 that are opposite to each other, and the second cover 17 is located on a side of the third plate 1426 where the fourth plate 14262 is located and is connected to the third plate 1426. The fourth plate 1427 is connected to the third plate 1426 and extends in a bending manner in a direction away from the fourth plate 14262 toward the third plate 14261; along the direction parallel to the third plate surface 14261, the third plate body 1426 and the sliding block 1425 are located on two opposite sides of the fourth plate body 1427, the fourth plate body 1427 is connected with the sliding block 1425, and the fourth plate body 1427 is rotatably connected with the fourth connecting rod 1423. The third plate 1426 and the sliding blocks 1425 are distributed on two opposite sides of the fourth plate 1427 along the direction parallel to the third plate 14261, so that the size of the sliding portion 1422 along the direction perpendicular to the third plate 14261 can be reduced, and the structural compactness of the sliding portion 1422 is improved.

Further alternatively, the fourth link 1423, the slide rail 1421, and the slider 1425 may be located on the same side of the fourth plate 1427 in a direction parallel to the third plate 14261.

Alternatively, when the first transmission member 141 adopts the third embodiment, referring to fig. 20 and 21, the second push rod 1416 may share the same component with the fifth link 1424 of the second transmission member 142. Specifically, if the second push rod 1416 and the fifth link 1424 share the same component, the component has a sixth connection position 1436, a seventh connection position 1437, and an eighth connection position 1438 that are spaced apart from each other, where the sixth connection position 1436 is connected to the output shaft of the driving member 15, and where the seventh connection position 1437 is rotatably connected to the end of the first push rod 1415 remote from the third link 1413, such that a portion between the sixth connection position 1436 and the seventh connection position 1437 is configured as the second push rod 1416. The eighth connecting position 1438 is rotatably connected to an end of the fourth link 1423 remote from the sliding portion 1422 such that a portion between the sixth connecting position 1436 and the eighth connecting position 1438 is configured as the fifth link 1424.

Further alternatively, the sixth connection bit 1436, the seventh connection bit 1437, and the eighth connection bit 1438 may be located on the same line, or may form a triangle, which is not limited by the embodiment of the present application.

Optionally, referring to fig. 22, the range hood 1 may further include an elastic member 18, where the elastic member 18 may extend along a length direction of the sliding rail 1421 and two ends of the elastic member are respectively connected to the mounting frame 16 and the sliding portion 1422. The sliding portion 1422 is connected to the mounting rack 16 through the elastic member 18, so that the gravity of the second transmission member 142 and the second cover 17 can be transferred to the mounting rack 16 through the elastic member 18, so that the acting force required by the driving member 15 to maintain the balance of the second cover 17 can be reduced, and the driving member 15 with a small size and low cost can be selected. Alternatively, the elastic members 18 may be distributed in a vertical direction to be able to maximally offset the gravity of the second cover 17, 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 this embodiment of the present application.

Alternatively, the first transmission member 141 and the second transmission member 142 are each connected to the output shaft of the driving member 15. So that the same driving piece 15 can drive the first driving piece 141 and the second driving piece 142 to move simultaneously, thereby realizing the switching of the first cover plate 13 between the first position and the second position and the switching of the second cover plate 17 between the third position and the fourth position. In an embodiment of the present application, the third link 1413 of the first transmission member 141 and the fifth link 1424 of the second transmission member 142 may each be connected to the output shaft of the driving member 15.

Alternatively, referring to fig. 23 and 24, in one possible solution, the range hood 1 may include a first screen 191 and a connection plate 192, where the first screen 191 is located on a side of an inner plate surface of the first cover 13, and a plurality of mesh holes 1911 are provided on the first screen 191. The connecting plate 192 is connected between the first screen 191 and the first cover 13, and encloses with the first screen 191 and the first cover 13 to form a smoke guiding cavity 193, the smoke guiding cavity 193 is communicated with the inner cavity 111 of the housing 11, the first screen 191 is located in the housing 11 when the first cover 13 is in the first position, the first screen 191 is located outside the housing 11 when the first cover 13 is in the second position, and the first smoke suction port 112 is communicated with the outside through the mesh 1911.

Further alternatively, the first net plate 191 and the connection plate 192 may be of a unitary structure. The range hood 1 may further include a first link 194, the first link 194 being connected between the connection plate 192 and the first cover plate 13. More specifically, the first connector 194 may include a first connector piece (not shown) that is attached to the inner plate surface of the first cover plate 13, and a second connector piece 1941 that is attached to the outer circumferential surface of the connector plate 192, and the first connector piece is connected to the second connector piece 1941.

The first connection 194 may also be connected with the first transmission member 141 to achieve connection of the first cover 13 with the first transmission member 141. More specifically, the first connector 194 may be connected with the baffle 1414 to enable connection of the first cover 13 with the first transmitting member 141.

Alternatively, when the first cover plate 13 is in the second position, the included angle between the plate surface of the first screen 191 and the hob 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, an edge line near the opening end surface of the first smoke suction port 112 may be located between an edge line far from the opening end surface of the first smoke suction port 112 and the hob plane p, among edge lines of the plate surface of the first screen 191. It can be understood that: when the first cover 13 is in the second position, the panel surface of the first screen 191 is obliquely opened upward, not obliquely opened downward.

In still another possible solution, referring to fig. 25 and 26, a first screen 191 may be disposed corresponding to the first smoking port 112 and connected to the housing 11. The first smoke suction port 112 in the second position communicates with the outside through the mesh 1911 of the first screen 191. Because the first screen 191 is connected to the housing 11, when the first cover 13 is switched between the first position and the second position, the first screen 191 does not move along with the first cover 13, so that the driving force requirement on the driving member 15 can be reduced, and the driving member 15 with small size and low cost can be selected. And the first screen 191 is directly connected with the shell 11, so that the structural stability of the first screen 191 after long-term use can be ensured, and falling off, scratch and the like are avoided.

Alternatively, the first screen 191 may be connected to the mounting frame 16 in the housing 11, thereby achieving the mounting of the first screen 191 at the first smoking port 112.

Optionally, the range hood 1 may further include a second screen 196 disposed at the second smoke suction port 113, and the second screen 196 may be connected to the housing 11. Alternatively, the second screen 196 may be coupled to the mounting bracket 16 within the housing 11, thereby enabling the mounting of the second screen 196 at the second smoking opening 113.

In still another possible solution, referring to fig. 27 and 28, no mesh plate may be disposed at the first smoke suction port 112 and the second smoke suction port 113, so that the 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. 24 again, the range hood 1 may further include a second connecting member 195, where the second connecting member 195 is connected between the second cover 17 and the second transmission member 142. More specifically, the second connecting piece 195 may be attached and connected to the inner plate surface of the second cover 17, and the second connecting piece 195 may be connected to the sliding portion 1422 of the second transmission piece 142.

Alternatively, the driving member 15 may include a motor 151, and an output shaft of the driving member 15 may correspond to an output shaft of the motor 151. The motor 151 has a first state in which the motor 151 drives the first driving part 141 to move so that the first cover plate 13 is located at the first position, and a second state in which the motor 151 drives the first driving part 141 to move so that the first cover plate 13 is located at the second position, and when the motor 151 is switched from the first state to the second state, a rotation stroke of an output shaft of the motor 151 may be greater than or equal to 85 ° and less than or equal to 95 °. The rotation stroke of the output shaft of the motor 151 will affect the rotation stroke of the first cover plate 13 when the first position is switched to the second position, that is, the opening degree of the first cover plate 13 to the first smoke suction port 112 is affected, and the rotation stroke of the output shaft of the motor 151 is reasonably limited, so that the good smoke suction effect at the first smoke suction port 112 can be ensured on the premise of reducing the power consumption of the motor 151.

Alternatively, the rotational travel of the first cover plate 13 about the first boundary line 131 may be greater than or equal to 65 ° and less than or equal to 75 ° when the first cover plate 13 is switched from the first position to the second position. Alternatively, the movement stroke of the second cover 17 in the direction perpendicular to the opening central axis of the second smoking port 113 may be greater than or equal to 100mm and less than or equal to 110mm when the second cover 17 is switched from the third position to the fourth position.

Alternatively, the number of the first driving members 141 may be two, and the inner plate surface of the first cover plate 13 has a first edge 132 and a second edge 133 that are distributed oppositely, and the two first driving members 141 are respectively located on one side of the first edge 132 of the first cover plate 13 and one side of the second edge 133 of the first cover plate 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 connected by a transmission rod 144. By arranging the first transmission members 141 on both sides of the first cover plate 13, the stability of the first cover plate 13 in the moving process can be improved.

Both ends of the driving rod 144 may be respectively mounted on the two first driving members 141 to achieve synchronous movement of the two first driving members 141. The two first transmission members 141 are identical in structure, and the two first transmission members 141 may be arranged in a substantially mirror image. Alternatively, when the number of the first transmission members 141 is two, the number of the mounting frames 16 may be two, and each mounting frame 16 is provided corresponding to one first transmission member 141.

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

The drive rod 144 is positioned within the interior cavity 111. Alternatively, the transmission rod 144 may be disposed corresponding to the first cover 13, see fig. 10. It should be noted that the transmission rod 144 may also be disposed corresponding to the second cover 17, referring to fig. 17, which is not limited in this embodiment of the present application. Alternatively, the drive rod 144 may be located on a side of the fan assembly 12 proximate to the first cover plate 13 or on a side of the fan assembly 12 proximate to the second cover plate 17, and the drive rod 144 may be located on a side of the fan assembly 12 distal to the first cover plate 13 or on a side of the fan assembly 12 distal to the second cover plate 17. The design of the drive rod 144 is varied and can be flexibly adjusted to suit specific needs.

Optionally, referring to fig. 27 again, the outer surface of the first cover 13 in the first position and the outer surface of the second cover 17 in the third position may be located on the same plane, so as to improve the flatness and the aesthetic property of the appearance of the range hood 1, and facilitate cleaning.

Alternatively, the gap between the first cover plate 13 in the first position and the second cover plate 17 in the third position may be greater than or equal to 3mm and less than or equal to 5mm, so as to achieve smaller gap between the first cover plate 13 and the second cover plate 17 on the premise of ensuring that the first cover plate 13 can be opened and closed smoothly.

The first smoke suction port 112 and/or the second smoke suction port 113 may be opened not only to suck the smoke during cooking but also to purify the indoor air when not cooking. Of course, the housing 11 may be additionally provided with a ventilation opening 110 to purify indoor air through the ventilation opening 110, which is not limited in the embodiment of the present application. Optionally, when the ventilation opening 110 is provided on the casing 11, the range hood 1 may be automatically operated at a given gear in a preset manner by a user, so as to improve the air quality of the kitchen environment. Alternatively, the total ventilation area of the ventilation openings 110 should be less than or equal to 10% of the total ventilation area of the other ventilation openings in the normal operation state of the whole range hood 1. The total ventilation area of the whole range hood 1 in the normal operation state may include the sum of the ventilation areas of the first smoke suction port 112 and the second smoke suction port 113.

In an exemplary scenario, with reference to fig. 9, the ventilation opening 110 may be in communication with the first smoke suction opening 112 and/or the second smoke suction opening 113, and the range hood 1 may be in communication with the outside through the ventilation opening 110 when the first cover plate 13 is in the first position and the second cover plate 17 is in the third position. Optionally, when the vent 110 is communicated with the first smoking port 112 and the first screen 191 is disposed at the first smoking port 112, the first screen 191 may also extend to the vent 110, so that the vent 110 is communicated with the outside through the mesh 1911 on the first screen 191, and the safety of the range hood 1 is improved. Alternatively, when the ventilation opening 110 communicates with the second smoking opening 113 and the second mesh plate 196 is provided at the second smoking opening 113, the second mesh plate 196 may also extend to the ventilation opening 110. In another exemplary scenario, referring to fig. 27 and 28, the vent 110 may be independent of the first smoking port 112 and independent of the second smoking port 113. The ventilation opening 110 may include a plurality of small holes arranged at intervals to improve the safety performance of the range hood 1.

Alternatively, the vent 110 may be located on a side of the first smoke absorbing port 112 away from the cooking bench plane p, or may be located on a side of the second smoke absorbing port 113 close to the cooking bench plane p, and the specific placement of the vent 110 is not limited in the embodiment of the present application. Note that, the ventilation opening 110 may not be provided in the range hood 1, so that the range hood 1 is substantially in a sealed state when the first cover 13 is in the first position and the second cover 17 is in the third position.

Optionally, the range hood 1 may further include an oil cup 197, where the oil cup 197 is located at the bottom of the housing 11.

Referring again to fig. 1-5, in one embodiment, the front plate 122 of the fan assembly 12 is disposed proximate the first plate 114 of the housing 11. Thus, after the oil smoke enters the inner cavity 111 of the shell 11 through the first smoke suction port 112 and the second smoke suction port 113 on the first plate 114, the oil smoke can timely enter the air inlet 121 of the fan assembly 12, and the oil smoke absorption speed is high and the absorption efficiency is high; and the structure of the range hood 1 can be made thinner.

Further alternatively, in one embodiment shown in fig. 1-5, more than 15% of the first region 1211 may be located within the second region 1121. Preferably, more than 20% of the first region 1211 may be located within the second region 1121. Alternatively, the maximum dimension h1 of the third region 1131 in the direction perpendicular to the cooktop plane p may be greater than or equal to 80mm.

Alternatively, in one embodiment shown in fig. 1 to 5, if the range hood 1 includes the first cover plate 13, in the first position, the projection area of the first cover plate 13 in the first plane a is a fourth area, and a line of the fourth area away from the second smoke exhaust port 113 is located on a side of the first area 1211 away from the second smoke exhaust port 113. Wherein, a border of the fourth region away from the second smoking opening 113 may be an upper border of the fourth region. Ensuring that the air intake 121 has a sufficient direct exposed area prevents excessive noise and air performance degradation due to excessive shielded area of the fan assembly 12. Further alternatively, a line of the fourth region away from the second smoking port 113 may be located on the side of the volute of the fan assembly 12 away from the second smoking port 113.

Alternatively, in one embodiment shown in fig. 1-5, the spacing between the front plate 122 and the first plate 114 is greater than or equal to 20mm and less than or equal to 50mm. Alternatively, the distance between the rear plate 123 and the second plate body 115 is greater than or equal to 15mm and less than or equal to 40mm.

In another embodiment, the front plate 122 on the fan assembly 12 is disposed proximate the second plate 115 of the housing 11. In this embodiment, the front plate 122 provided with the air inlet 121 and the first plate 114 provided with the first smoke suction port 112 and the second smoke suction port 113 are arranged in a back direction, so that noise of the range hood 1 in the use process can be reduced, and the use experience of a user can be improved. Optionally, a maximum dimension h1 of the third region 1131 in a direction perpendicular to the cooktop plane p is greater than or equal to 70mm. Preferably, the maximum dimension h1 of the third region 1131 in a direction perpendicular to the cooktop plane p is greater than or equal to 100mm. Optionally, in the first position, a projection area of the first cover plate 13 in the first plane a is a fourth area, and a line of the fourth area away from the second smoke suction port 113 is located at a side of the first line in the first area 1211 away from the second smoke suction port 113; the distance between the first straight line and a line of the first region 1211 distant from the second smoke suction port 113 in a direction perpendicular to the hob plane p is 20mm. Alternatively, the distance between the rear plate 123 and the first plate body 114 is greater than or equal to 25mm and less than or equal to 60mm; and/or, the spacing between the front plate 122 and the second plate body 115 is greater than or equal to 10mm and less than or equal to 30mm.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.

Claims

1. A range hood, comprising:

the shell is provided with an inner cavity, and a first smoke suction port and a second smoke suction port which are communicated with the inner cavity, wherein the second smoke suction port is used for being arranged close to a hearth plane when in use, and the first smoke suction port is used for being positioned at one side of the second smoke suction port away from the hearth plane when in use; and

2. The range hood of claim 1, wherein the area enclosed by the projection of the contour line of the second smoke port on the first plane is a third area, and the maximum dimension of the third area in the direction perpendicular to the plane of the cooking bench is greater than or equal to 50mm.

3. The range hood of claim 1, wherein the housing includes a first plate positioned on one side of the fan assembly along the axis of rotation, the first plate having the first and second smoke suction ports thereon, the air inlet of the fan assembly being positioned on a side of the fan assembly adjacent the first plate.

4. A range hood according to claim 3, wherein,

more than 15% of the first region is located within the second region; and/or

The area surrounded by the projection of the contour line of the second smoking opening on the first plane is a third area, and the maximum size of the third area in the direction perpendicular to the plane of the cooking bench is more than or equal to 80mm.

5. The range hood of claim 1, wherein the housing includes a first plate positioned on a side of the fan assembly along the rotational axis, the first plate having the first and second smoke suction ports thereon, the air inlet of the fan assembly being positioned on a side of the fan assembly facing away from the first plate.

6. The range hood of claim 5 wherein the area enclosed by the projection of the contour line of the second smoke port onto the first plane is a third area, and the maximum dimension of the third area in the direction perpendicular to the plane of the cooking bench is greater than or equal to 70mm.

7. The range hood of claim 1, further comprising:

the first cover plate is arranged corresponding to the first smoking opening and is provided with a first position and a second position, the first cover plate closes the first smoking opening in the first position, and the first cover plate opens the first smoking opening in the second position; under the second position, the interval between the first apron is close to the limit of second smoking mouth and the second plane is greater than the first apron is kept away from the limit of second smoking mouth with the interval between the second plane, the second plane perpendicular to the opening axis of first smoking mouth just is located the first apron is close to one side of first smoking mouth.

8. The range hood according to claim 7, wherein the housing comprises a first plate positioned on one side of the fan assembly in the direction of the rotational axis, the first plate being provided with the first smoke suction port and the second smoke suction port, the air inlet of the fan assembly being positioned on one side of the fan assembly adjacent to the first plate,

and under the first position, a projection area of the first cover plate in the first plane is a fourth area, and a side line of the fourth area, which is far away from the second smoking port, is positioned at one side of the first area, which is far away from the second smoking port.

9. The range hood of claim 7, wherein the housing includes a first plate positioned on a side of the fan assembly along the rotational axis, the first plate having the first and second smoke suction ports thereon, the air intake of the fan assembly being positioned on a side of the fan assembly facing away from the first plate,

in the first position, a projection area of the first cover plate in the first plane is a fourth area, and a line of the fourth area away from the second smoking port is positioned at one side of the first line in the first area away from the second smoking port; the distance between the first straight line and a side line of the first area, which is far away from the second smoking opening, is 20mm in the direction perpendicular to the hearth plane.

10. The range hood according to claim 1, wherein the housing comprises a first plate body and a second plate body which are distributed on two opposite sides of the fan assembly along the rotation axis direction, the first plate body is provided with the first smoke suction port and the second smoke suction port, the fan assembly is provided with a front plate provided with the air inlet and a rear plate arranged opposite to the front plate,

The front plate of the fan assembly is arranged close to the first plate body, and the distance between the front plate and the first plate body is larger than or equal to 20mm and smaller than or equal to 50mm; and/or

The front plate of the fan assembly is arranged close to the first plate body, and the distance between the rear plate and the second plate body is larger than or equal to 15mm and smaller than or equal to 40mm; and/or

The rear plate of the fan assembly is arranged close to the first plate body, and the distance between the rear plate and the first plate body is greater than or equal to 25mm and less than or equal to 60mm; and/or

The back plate of the fan assembly is arranged close to the first plate body, and the distance between the front plate and the second plate body is greater than or equal to 10mm and less than or equal to 30mm.

11. The range hood of claim 1 wherein the housing includes first and second plates disposed on opposite sides of the fan assembly along the rotational axis, the first plate having the first and second smoke-absorbing ports disposed thereon, the range hood further comprising:

at least one first deflector located in the interior cavity of the housing, the first deflector being located on one side of the fan assembly along a first direction that is perpendicular to the rotational axis direction and parallel to the cooktop plane; one end of the first guide plate is connected to one edge of the first plate body, which is located at one side of the fan assembly along the first direction, the other end of the first guide plate extends towards the direction close to the second plate body, the first guide plate points to the second plate body, and the distance between the first guide plate and the rotation axis is gradually reduced.

12. The range hood of claim 1 wherein the housing includes first and second plates disposed on opposite sides of the fan assembly along the rotational axis, the first plate having the first and second smoke-absorbing ports disposed thereon, the range hood further comprising:

at least one second deflector located in the interior cavity of the housing, the second deflector being located on one side of the fan assembly along a first direction that is perpendicular to the rotational axis direction and parallel to the cooktop plane; one end of the second guide plate is connected to one edge of the first plate body, which is close to the plane of the cooking bench, the other end of the second guide plate extends towards the direction, which is close to the second plate body, and the first plate body points to the second plate body, so that the distance between the second guide plate and the rotating axis is gradually reduced.

13. The range hood of claim 1, further comprising:

the shielding plate is positioned in the inner cavity of the shell and corresponds to the second smoking port; the shielding plate shields the fan assembly along the rotation axis direction of the fan assembly.