Range hood

Abstract

The application discloses a range hood, which comprises a shell and a fan assembly. The shell is formed with an inner cavity, a first smoke suction port and a second smoke suction port. The second smoke suction port is arranged close to a cooktop plane. The first smoke suction port is used to be located on the side away from the cooktop plane of the second smoke suction port during use. The fan assembly is arranged in the inner cavity of the shell. The fan assembly has an air inlet. The projection of the contour line of the air inlet on a first plane forms a first area. The projection of the contour line of the first smoke suction port on the first plane forms a second area. More than 10% of the first area is located in the second area. The first plane is perpendicular to the rotation axis of the fan assembly. The range hood can be made thinner in the direction of the rotation axis of the fan assembly, that is, the distance between the front plate and the rear plate of the fan assembly and the shell can be made smaller, thereby reducing the sense of oppression of the user during use and improving the user experience.

Description

TECHNICAL FIELD

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

[0002] The range hood is worked by using the principle of fluid dynamics, and the oil fume is sucked by the fan assembly installed in the inner cavity of the range hood. The range hood in the related art has the problems of large size, occupying more cabinet space, and causing great compression to the cooking personnel during use. SUMMARY

[0003] The main purpose of the present application is to provide a range hood, which aims to improve the problems of large size, occupying more cabinet space, and causing great compression to the cooking personnel during use of the range hood in the related art.

[0004] To achieve the above-mentioned purpose, the range hood provided by the present application comprises:

[0005] a housing formed with an inner cavity, a first smoke suction port and a second smoke suction port communicated with the inner cavity, the second smoke suction port being arranged close to the cooking bench plane during use, and the first smoke suction port being arranged on the side of the second smoke suction port away from the cooking bench plane during use; and

[0006] a fan assembly arranged in the inner cavity of the housing, the fan assembly having an air inlet, the projection of the contour line of the air inlet on a first plane forming a first area, the projection of the contour line of the first smoke suction port on the first plane forming a second area, more than 10% of the first area being located in the second area, and the first plane being perpendicular to the rotation axis of the fan assembly.

[0007] In the technical scheme of the present application, by limiting the positional relationship between the first smoke suction port on the housing and the air inlet on the fan assembly, and limiting the positional relationship between the first smoke suction port and the second smoke suction port relative to the cooking bench plane during use, the size of the range hood in the direction of the rotation axis of the fan assembly can be made thinner, i.e. the distance between the front plate and the rear plate of the fan assembly and the housing can be made smaller, thereby reducing the compression of the user during use and improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0009] Figure 1 A perspective view of a first range hood according to an embodiment of the present application is provided.

[0010] Figure 2 A perspective view of a first range hood according to an embodiment of the present application is provided. Figure 1 A projection view of an air inlet, a first smoke inlet and a second smoke inlet of the range hood on a first plane is shown.

[0011] Figure 3 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 application is provided.

[0012] Figure 4 A cross-sectional view of the range hood is shown. Figure 3 A cross-sectional view of the range hood is shown.

[0013] Figure 5 A cross-sectional view of a third range hood according to an embodiment of the present application is provided.

[0014] Figure 6 A front view of a fourth range hood according to an embodiment of the present application is provided.

[0015] Figure 7 A front view of an alternative scheme of a shielding plate in the range hood is provided. Figure 6 A front view of an alternative scheme of a shielding plate in the range hood is provided.

[0016] Figure 8 A perspective view of the range hood is shown. Figure 7 A perspective view of the range hood is shown.

[0017] Figure 9 A perspective view of a fifth range hood according to an embodiment of the present application when a first cover plate closes a first smoke inlet and a second cover plate closes a second smoke inlet is provided.

[0018] Figure 10 A perspective view of part of the structure of the range hood when the first cover plate opens the first smoke inlet and the second cover plate opens the second smoke inlet is shown. Figure 9 A perspective view of part of the structure of the range hood when the first cover plate opens the first smoke inlet and the second cover plate opens the second smoke inlet is shown.

[0019] Figure 11 A perspective view of the first transmission member, the second transmission member and the mounting frame of the range hood when the first cover plate opens the first smoke inlet and the second cover plate opens the second smoke inlet is shown. Figure 9 A perspective view of the first transmission member, the second transmission member and the mounting frame of the range hood when the first cover plate opens the first smoke inlet and the second cover plate opens the second smoke inlet is shown.

[0020] Figure 12 A perspective view from another angle is shown. Figure 11

[0021] A perspective view of an alternative scheme of the first transmission member, the second transmission member and the mounting frame of the range hood when the first cover plate opens the first smoke inlet and the second cover plate opens the second smoke inlet is shown. Figure 13 Figure 9 A perspective view of an alternative scheme of the first transmission member, the second transmission member and the mounting frame of the range hood when the first cover plate opens the first smoke inlet and the second cover plate opens the second smoke inlet is shown.

[0022] ​Figure 14 is Figure 13 is a perspective view of the first transmission member and the mounting frame in the first state;

[0023] Figure 15 is Figure 13 is a perspective view of the second transmission member and the mounting frame in the second state;

[0024] Figure 16 is Figure 13 is a perspective view of the first transmission member, the second transmission member and the mounting frame in another view;

[0025] Figure 17 is a perspective view of part of the structure of the sixth range hood according to the embodiment of the present application when the first cover plate opens the first smoke suction port and the second cover plate opens the second smoke suction port;

[0026] Figure 18 is Figure 17 is a perspective view of the first transmission member, the second transmission member and part of the mounting frame;

[0027] Figure 19 is Figure 17 is a schematic diagram of the working principle of the first transmission member, the second transmission member and the mounting frame;

[0028] Figure 20 is Figure 17 is a perspective view of the first transmission member, the second transmission member and the mounting frame in an alternative solution of the range hood when the first cover plate opens the first smoke suction port and the second cover plate opens the second smoke suction port;

[0029] Figure 21 is Figure 20 is a perspective view of the first transmission member, the second transmission member and the mounting frame in the range hood when the first cover plate closes the first smoke suction port and the second cover plate closes the second smoke suction port;

[0030] Figure 22 is Figure 17 is a perspective view of the first transmission member, the second transmission member, the mounting frame and the elastic member;

[0031] Figure 23 is a perspective exploded view of part of the structure of the seventh range hood according to the embodiment of the present application when the first cover plate opens the first smoke suction port and the second cover plate opens the second smoke suction port;

[0032] Figure 24 is Figure 23 is a perspective view of the first cover plate, the first mesh plate and the connecting plate;

[0033] Figure 25 is a perspective view of the eighth range hood according to the embodiment of the present application when the first cover plate opens the first smoke suction port and the second cover plate opens the second smoke suction port;

[0034] Figure 26 is a perspective view of a ninth range hood according to an embodiment of the application with the first cover open to the first air inlet and the second cover open to the second air inlet;

[0035] Figure 27 is a perspective view of a tenth range hood according to an embodiment of the application with the first cover closed to the first air inlet and the second cover closed to the second air inlet;

[0036] Figure 28 is Figure 27 is a perspective view of a ninth range hood according to an embodiment of the application with the first cover open to the first air inlet and the second cover open to the second air inlet.

[0037] Explanation of reference numerals: 1, range hood; 11, housing; 111, inner cavity; 112, first smoke suction port; 1121, second area; 113, second smoke suction port; 1131, third area; 114, first plate body; 1141, first edge line; 1142, second edge line; 115, second plate body; 1151, third edge line; 1152, fourth edge line; 116, side plate; 1161, first side plate; 1162, second side plate; 117, first flow guide plate; 118, second flow guide plate; 119, shielding plate; 110, ventilation port; 12, fan assembly; 121, air inlet; 1211, first area; 1212, rotation axis; 122, front plate; 123, rear plate; 124, safety net; 13, first cover plate; 131, first boundary line; 132, first edge; 133, second edge; 141, first transmission member; 1411, first connecting rod; 1412, second connecting rod; 14121, first sub-part; 14122, second sub-part; 14123, clamping protrusion; 1413, third connecting rod; 14131, third sub-part; 14132, fourth sub-part; 14133, first surface; 1414, baffle plate; 14141, first opening; 1415, first push rod; 1416, second push rod; 142, second transmission member; 1421, slide rail; 1422, sliding part; 1423, fourth connecting rod; 1424, fifth connecting rod; 1425, sliding block; 1426, third plate body; 14261, third plate surface; 14262, fourth plate surface; 1427, fourth plate body; 1431, first connecting position; 1432, second connecting position; 1433, third connecting position; 1434, fourth connecting position; 1435, fifth connecting position; 1436, sixth connecting position; 1437, seventh connecting position; 1438, eighth connecting position; 144, transmission rod; 15, driving member; 151, motor; 16, mounting frame; 161, first structure part; 162, second structure part; 163, limiting structure; 164, mounting plate; 1641, first plate surface; 1642, second plate surface; 165, bracket; 1651, first part; 1652, second part; 1653, bent part; 17, second cover plate; 18, elastic member; 191, first mesh plate; 1911, mesh hole; 192, connecting plate; 193, smoke guiding cavity; 194, first connecting member; 1941, second connecting piece; 195, second connecting member; 196, second mesh plate; 197, oil cup; 198, check valve; p, cooktop plane; a, first plane; x, first direction; y, central axis.

[0038] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0039] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0040] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications also change accordingly.

[0041] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0042] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0044] Please refer to Figure 1 The embodiment of the present application provides an extractor hood 1, which comprises a shell 11 and a fan assembly 12. The shell 11 is formed with an inner cavity 111, a first smoke suction port 112 and a second smoke suction port 113 which communicate with the inner cavity 111. The fan assembly 12 is located in the inner cavity 111, and the fan assembly 12 has an air inlet 121 for generating negative pressure suction force, so that oil fume can be sucked into the inner cavity 111 through the first smoke suction port 112 and / or the second smoke suction port 113, without causing the kitchen to be full of oil fume, thereby improving the experience of the user when cooking.

[0045] Specifically, the second smoke suction port 113 is configured to be arranged close to the cooktop plane p in use, and the first smoke suction port 112 is configured to be arranged on the side of the second smoke suction port 113 away from the cooktop plane p in use. For example, the range hood 1 is arranged above the cooktop plane p in use, and the first smoke suction port 112 and the second smoke suction port 113 are both arranged above the cooktop plane p, and the first smoke suction port 112 is arranged above the second smoke suction port 113.

[0046] To ensure that the range hood 1 has a better oil fume suction effect, please refer to Figure 1 and Figure 2 If the area surrounded by the projection of the profile line of the air inlet 121 of the fan assembly 12 on the first plane a is defined as the first area 1211, and the area surrounded by the projection of the profile line of the first smoke suction port 112 on the first plane a is defined as the second area 1121, more than 10% of the first area 1211 can be located in the second area 1121. The first plane a is perpendicular to the rotation axis 1212 of the fan assembly 12.

[0047] More than 10% of the first area 1211 located in the second area 1121 can be roughly understood as: more than 10% of the area surrounded by the entire opening of the air inlet 121 will be directly opposite the first smoke suction port 112, so as to ensure that the first smoke suction port 112 has sufficient negative pressure suction force, thereby ensuring the oil fume suction effect of the first smoke suction port 112.

[0048] Optionally, if the area surrounded by the projection of the profile line of the second smoke suction port 113 on the first plane a is defined as the third area 1131, the maximum dimension h1 of the third area 1131 in the direction perpendicular to the cooktop plane p can be greater than or equal to 50 mm. In this way, the opening area of the second smoke suction port 113 can be ensured to be large enough, so as to facilitate oil fume suction. Optionally, at least part of the first area 1211 can be located in the third area 1131.

[0049] Optionally, the rotation axis 1212 of the fan assembly 12 can be parallel to the cooktop plane p, at this time, the first plane a perpendicular to the rotation axis 1212 will be perpendicular to the cooktop plane p. It should be noted that the rotation axis 1212 of the fan assembly 12 can also intersect with the cooktop plane p, for example, the acute angle between the rotation axis 1212 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.

[0050] Optionally, please refer to Figure 1The housing 11 comprises a first plate body 114 and a second plate body 115 distributed on opposite sides of the fan assembly 12 along the direction of the rotation axis 1212 of the fan assembly 12, and the first plate body 114 can be provided with a first smoke suction port 112 and a second smoke suction port 113. Designing the first smoke suction port 112 and the second smoke suction port 113 on the same plate body facilitates processing and manufacturing. Optionally, the first plate body 114 and the second plate body 115 can be substantially parallel. The first plate body 114 and the second plate body 115 are substantially flat plates.

[0051] The housing 11 can further comprise a side plate 116 connected between the first plate body 114 and the second plate body 115, and the first plate body 114, the second plate body 115 and the side plate 116 can collectively enclose the inner cavity 111.

[0052] Optionally, in an exemplary scheme, referring to Figure 3 The outer contour line of the inner plate surface of the first plate body 114 can have a first edge line 1141 and a second edge line 1142 distributed opposite to each other along the first direction x, and the projection pattern of the outer contour line of the inner plate surface of the second plate body 115 on the inner plate surface of the first plate body 114 can have a third edge line 1151 and a fourth edge line 1152 distributed opposite to each other along the first direction x, the third edge line 1151 can be located between the first edge line 1141 and the second edge line 1142, and the fourth edge line 1152 can be located between the first edge line 1141 and the second edge line 1142. Wherein, the first direction x is perpendicular to the rotation 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 body 114 is smaller than the dimension along the first direction x at the second plate body 115, which facilitates the airflow circulation in the range hood 1.

[0053] Optionally, along the first direction x, the spacing between the third edge line 1151 and the fourth edge line 1152 can be at least 60mm smaller than the spacing between the first edge line 1141 and the second edge line 1142.

[0054] Optionally, referring to Figure 4 The side plate 116 can comprise a first side plate 1161 and a second side plate 1162 spaced apart along the first direction x, and the included angle between the first side plate 1161 and the first plate body 114 can be greater than or equal to 30° and less than 90°. The included angle between the second plate body 1162 and the first plate body 114 can be greater than or equal to 30° and less than 90°.

[0055] In another exemplary scheme, referring to Figure 5, the range hood 1 can include at least one first flow guide plate 117, the first flow guide plate 117 is located in the inner cavity 111 of the shell 11, and the first flow guide plate 117 is located on one side of the fan assembly 12 along the first direction x; one end of the first flow guide plate 117 is connected to an edge of the first plate body 114 located on one side of the fan assembly 12 along the first direction x, and the other end extends towards the direction close to the second plate body 115; and in the direction from the first plate body 114 to the second plate body 115, the distance between the first flow guide plate 117 and the rotation axis 1212 gradually decreases.

[0056] When the first flow guide plate 117 is arranged in the range hood 1, the structure adjustment of the inner cavity 111 can be realized by means of the first flow guide plate 117, and the diversification of the side plate 116 structure design can be realized. For example, by means of the first flow guide plate 117, the width dimension of the inner cavity 111 of the shell 11 at the first plate body 114 along the first direction x can be smaller than the dimension along the first direction x at the second plate body 115.

[0057] Optionally, the number of first flow guide plates 117 can be two, and the two first flow guide plates 117 are distributed on opposite sides of the fan assembly 12 along the first direction x, so that the air inlet amount on both sides of the fan assembly 12 is approximately balanced, and the oil fume absorption effect on both sides of the fan assembly 12 is approximately balanced.

[0058] Optionally, referring again to Figure 1 , the range hood 1 includes at least one second flow guide plate 118, the second flow guide plate 118 is located in the inner cavity 111 of the shell 11, and the second flow guide plate 118 is located on one side of the fan assembly 12 along the first direction x, one end of the second flow guide plate 118 is connected to an edge of the first plate body 114 close to the cooktop plane p, and the other end extends towards the direction close to the second plate body 115; and in the direction from the first plate body 114 to the second plate body 115, the distance between the second flow guide plate 118 and the rotation axis 1212 gradually decreases. Through the above arrangement, the negative pressure at the second smoke suction port 113 close to the cooktop plane p can be regulated to make the oil fume more easily enter the second smoke suction port 113. Further optionally, the included angle between the second flow guide plate 118 and the cooktop plane p can be greater than or equal to 30° and less than or equal to 60°.

[0059] Optionally, referring to Figure 6, the range hood 1 can further include a shielding plate 119, the shielding plate 119 is located in the inner cavity 111 and is arranged corresponding to the second smoke suction port 113, and the shielding plate 119 shields the fan assembly 12 in the direction of the rotation axis 1212. So that the part of the fan assembly 12 at the second smoke suction port 113 is shielded by the shielding plate 19 when the user uses the range hood 1, and the appearance is better. Optionally, in order to ensure the smoke suction effect at the second smoke suction port 113, the area of the region of the second smoke suction port 113 corresponding to the shielding plate 119 can be less than or equal to 40% of the total area of the second smoke suction port 113.

[0060] Further, optionally, the distance between the shielding plate 119 and the first side plate 1161 can be substantially equal to the distance between the shielding plate 119 and the second side plate 1162. So that the shielding plate 119 is substantially centrally distributed, and the appearance of the range hood 1 is improved.

[0061] Optionally, referring to Figures 6 to 8 , the shielding plate 119 can be substantially rectangular, trapezoidal or the like. When the shielding plate 119 is substantially trapezoidal, the upper base of the trapezoid can be arranged close to the cooking bench plane p, and the lower base of the trapezoid can be located on the side away from the cooking bench plane p. It should be noted that the shielding plate 119 can also be selected in any other shape, and the embodiments of the present application do not limit this.

[0062] Optionally, referring to Figure 4 and Figure 5 , the fan assembly 12 includes a front plate 122 and a rear plate 123 arranged opposite to the front plate 122, and the air inlet 121 is arranged on the front plate 122. In order to improve the safety performance of the fan assembly 12, the fan assembly 12 can further include a safety net 124, and the safety net 124 can be arranged at the front plate 122 and cover the air inlet 121. Optionally, the middle part of the safety net 124 can be convexly arranged towards the direction away from the front plate 122.

[0063] Optionally, the rotation axis 1212 of the fan assembly 12 can be arranged at intervals with the central axis y of the shell 11. Preferably, the distance between the rotation axis 1212 of the fan assembly 12 and the central axis y of the shell 11 is less than or equal to 100 mm. Controlling the distance between the rotation axis 1212 and the central axis y within 100 mm can reduce the smoke suction difference on the left and right sides of the fan assembly 12 on the premise of meeting the installation requirements.

[0064] Optionally, referring to Figure 6The range hood 1 further comprises a check valve 198 located at the top of the housing 11. Optionally, the 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 250 mm; preferably, less than or equal to 200 mm. 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 250 mm; preferably, less than or equal to 200 mm. In this way, the whole machine device can be adapted to the existing cabinet structure, and the user of the European style does not need to adjust the cabinet, and the adaptability is stronger.

[0065] Optionally, the range hood 1 further comprises a first cover plate 13 arranged corresponding to the first smoke suction port 112, the first cover plate 13 having a first position and a second position. In the first position, the first cover plate 13 closes the first smoke suction port 112, which can be seen from Figure 9 ; in the second position, the first cover plate 13 opens the first smoke suction port 112, which can be seen from Figure 8 . For example, when the range hood 1 is idle, the first cover plate 13 can be in the first position to close the first smoke suction port 112, so as to avoid dust and the like entering the inner cavity 111 of the housing 11 through the first smoke suction port 112, or to avoid the fan assembly 12 being exposed to cause damage. When the range hood 1 is working, the first cover plate 13 can be in the second position to open the first smoke suction port 112, so that the oil fume can be sucked into the inner cavity 111 through the first smoke suction port 112 after the fan assembly 12 is started.

[0066] Further, in the second position, the distance between the edge line of the first cover plate 13 close to the second smoke suction port 113 and the second plane b can be greater than the distance between the edge line of the first cover plate 13 away from the second smoke suction port 113 and the second plane b, and the second plane b is perpendicular to the opening central axis of the first smoke suction port 112 and located at the side of the first cover plate 13 close to the first smoke suction port 112. In this way, in the second position, a smoke gathering interval can be formed between the first cover plate 13 and the first plate body 114, and the end of the smoke gathering interval close to the second smoke suction port 113 is wider, and the end away from the second smoke suction port 113 is narrower. It can be understood that the end of the smoke gathering interval close to the cooking bench plane p is wider, and the end away from the cooking bench plane p is narrower, so that the oil fume generated at the cooking bench plane p can enter the smoke gathering interval through the wider opening, and the amount of smoke entering is ensured. The oil fume entering the smoke gathering interval can be blocked by the inner plate surface of the opened first cover plate 13 and then enter the first smoke suction port 112; that is, the opened first cover plate 13 can guide the transmission of the oil fume, and the amount of smoke at the first smoke suction port 112 can be improved, and the use effect of the range hood 1 can be improved.

[0067] 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 plate 13 in any state can be greater than or equal to 2 mm, so as to ensure the normal operation of the range hood 1 and avoid scratching.

[0068] Please refer to Figure 10 The range hood 1 can further include a first transmission member 141 and a driving member 15, the first transmission member 141 connecting the driving member 15 and the first cover plate 13, for switching the first cover plate 13 between the first position and the second position under the driving of the driving member 15.

[0069] Optionally, the first transmission member 141 can be used to rotate the first cover plate 13 relative to the opening end surface of the first smoke inlet 112 to close or open the first smoke inlet 112 when the driving member 15 is driven to move. That is, the first cover plate 13 is flipped to open and close the first smoke inlet 112, and this scheme can realize the miniaturization design of the range hood 1 compared with the scheme that the first cover plate 13 is translated along a direction perpendicular to the opening central axis of the first smoke inlet 112 to open and close the first smoke inlet 112. For example, the inner plate surface of the first cover plate 13 has a first boundary line 131 away from the cooktop plane p, and the first cover plate 13 can be rotated about the first boundary line 131 as the rotation axis to open and close the first smoke inlet 112.

[0070] In the first exemplary scheme, the first transmission member 141 can be a four-bar linkage mechanism to drive the rotation of the first cover plate 13. Specifically, please refer to Figure 11 and Figure 12 The range hood 1 can include a first structure 161 and a second structure 162 installed in the housing 11 and spaced apart. The first transmission member 141 can include a first connecting rod 1411, a second connecting rod 1412, and a third connecting rod 1413, the first connecting rod 1411 having a first connecting site 1431 and a second connecting site 1432 spaced apart; one end of the second connecting rod 1412 is rotatably connected to the first connecting site 1431 of the first connecting rod 1411, and the other end is rotatably connected to the first structure 161; one end of the third connecting rod 1413 is rotatably connected to the second connecting site 1432 of the first connecting rod 1411, and the other end is rotatably connected to the second structure 162. One of the first connecting rod 1411, the second connecting rod 1412, and the third connecting rod 1413 can be installed with the first cover plate 13, and the other of the first connecting rod 1411, the second connecting rod 1412, and the third connecting rod 1413 can be connected with the output shaft of the driving member 15, for being rotated under the driving of the driving member 15, so that the first cover plate 13 is rotated relative to the opening end surface of the first smoke inlet 112, and the first cover plate 13 closes or opens the first smoke inlet 112.

[0071] The first connecting rod 1411, the second connecting rod 1412 and the third connecting rod 1413 are one of which is installed with the first cover plate 13, which can be that any one of the first connecting rod 1411, the second connecting rod 1412 and the third connecting rod 1413 is attached to the first cover plate 13 and connected by screws or the like. In the embodiment of the application, the first connecting rod 1411 is attached to the first cover plate 13 and connected by screws. The other of the first connecting rod 1411, the second connecting rod 1412 and the third connecting rod 1413 is connected with the output shaft of the driving member 15, which can be that any one of the first connecting position 1431 of the first connecting rod 1411, the second connecting position 1432 of the first connecting rod 1411, the first connecting rod 1412 close to the first structure 161, the second connecting rod 1412 close to the first structure 161, the third connecting rod 1413 close to the second connecting position 1432, and the third connecting rod 1413 close to the second structure 162 is fixedly connected with the output shaft of the driving member 15, so as to be able to rotate under the driving of the output shaft of the driving member 15. In the embodiment of the application, the second connecting rod 1412 close to the first structure 161 is fixedly connected with the output shaft of the driving member 15.

[0072] It should be noted that the first structure 161 and the second structure 162 can be directly installed on the housing 11. At least one of the first structure 161 and the second structure 162 can also be installed on the mounting bracket 16 in the housing 11, and the driving member 15 can also be installed on the mounting bracket 16.

[0073] Alternatively, the first structure 161 and the second structure 162 can only be part of the structure of the mounting bracket 16. Specifically, part of the structure of the mounting bracket 16 can be defined as the first structure 161, and part of the structure can be defined as the second structure 162, without the need to additionally provide the first structure 161 and the second structure 162, so as to simplify the structure of the range hood 1. Of course, the first structure 161 and / or the second structure 162 can also be structures different from the mounting bracket 16, and the embodiment of the application does not limit this.

[0074] Alternatively, the mounting bracket 16 can be provided with a limiting structure 163 Figure 13 which is shown in FIG. 16), which can be used to limit the movement of the first cover plate 13 to the second position, so that the first cover plate 13 is more accurately opened to the second position.

[0075] Optionally, the limiting structure 163 can be a folded edge. That is, the limiting structure 163 is formed by folding a part of the mounting frame 16. The limiting structure 163 can be arranged corresponding to the second connecting rod 1412 and / or the third connecting rod 1413. Optionally, a clamping protrusion can be arranged on the second connecting rod 1412 and / or the third connecting rod 1413. When the clamping protrusion is moved to abut against the limiting structure 163, it indicates that the first cover plate 13 is moved to the second position. Optionally, in the edge of the inner plate surface of the first cover plate 13, when the part of the edge close to the cooking platform plane p contacts the opening end surface of the first smoke suction port 112, it indicates that the first cover plate 13 is moved to the first position.

[0076] In the second exemplary scheme, referring to Figures 13 to 16 , the structure in this scheme is basically the same as that in the first scheme, except that in the first scheme, the first connecting rod 1411, the second connecting rod 1412 and the third connecting rod 1413 of the first transmission member 141 together with the mounting frame 16 form a four-connecting-rod mechanism. In this embodiment, the first transmission member 141 and the mounting frame 16 together can form a six-connecting-rod mechanism to achieve the rotational transmission of the first cover plate 13.

[0077] Specifically, the second connecting rod 1412 can be split into a first sub-portion 14121 and a second sub-portion 14122 distributed along the length direction thereof. One end of the first sub-portion 14121 is rotationally connected with the first connecting position 1431 of the first connecting rod 1411, and the other end of the first sub-portion 14121 is rotationally connected with one end of the second sub-portion 14122. The other end of the second sub-portion 14122 is rotationally connected with the first structure portion 161. The third connecting rod 1413 can be split into a third sub-portion 14131 and a fourth sub-portion 14132 distributed along the length direction thereof. One end of the third sub-portion 14131 is rotationally connected with the second connecting position 1432 of the first connecting rod 1411, and the other end of the third sub-portion 14131 is rotationally connected with one end of the fourth sub-portion 14132. The other end of the fourth sub-portion 14132 is rotationally connected with the second structure portion 162. The middle portion of the first sub-portion 14121 is further rotationally connected with the middle portion of the fourth sub-portion 14132. At this time, the first connecting rod 1411 is mounted with the first cover plate 13, and the second sub-portion 14122 away from one end of the first sub-portion 14121 or the fourth sub-portion 14132 away from one end of the third sub-portion 14131 is connected with the output shaft of the driving member 15.

[0078] If the output shaft of the driving member 15 is connected to the end of the second sub-portion 14122 away from the first sub-portion 14121, when the first cover plate 13 is switched from the first state to the second state, under the driving of the driving member 15, the second sub-portion 14122 will not only drive the third sub-portion 14131 to move away from the end of the fourth sub-portion 14132 to the outside of the first smoke inlet 112, but also drive the first sub-portion 14121 to move away from the end of the second sub-portion 14122 to the outside of the first smoke inlet 112. That is, when the first cover plate 13 is switched from the first position to the second position, under the driving of the driving member 15, the first connecting position 1431 and the second connecting position 1432 of the first connecting rod 1411 connected to the first cover plate 13 will both move towards the outside of the first smoke inlet 112, so that the first cover plate 13 can not be easily hindered by the shell 11 during the outward movement, that is, even if the inner plate surface of the first cover plate 13 in the first position is attached to the opening end surface of the first smoke inlet 112, the first cover plate 13 can still be smoothly opened, and the structural compactness of the range hood 1 can be improved.

[0079] Optionally, the fourth sub-portion 14132 has a first surface 14133 and a second surface (not shown in the figure) distributed in opposite directions along the rotation axis thereof, and the first connecting rod 1411, the third sub-portion 14131 and the first sub-portion 14121 are all located on the side of the first surface 14133 of the fourth sub-portion 14132. The first transmission member 141 can further include a baffle 1414 located on the same side of the fourth sub-portion 14132 as the first sub-portion 14121 and connected to the first connecting rod 1411. By arranging the fourth sub-portion 14132 and the baffle 1414 on one side and arranging the first connecting rod 1411, the third sub-portion 14131 and the first sub-portion 14121 on the other side, when the range hood 1 is assembled, the side where the baffle 1414 and the fourth sub-portion 14132 are located can be arranged towards the outside of the range hood 1, and the side where the first connecting rod 1411, the third sub-portion 14131 and the first sub-portion 14121 are located can be arranged on the inside and can be shielded by the baffle 1414, so that the structure is more beautiful. It should be noted that the second sub-portion 14122 can also be located on the same side as the fourth sub-portion 14132 and the baffle 1414, and the present application does not limit this.

[0080] Optionally, the thickness of the fourth sub-portion 14132, the thickness of the baffle 1414 and the thickness of the second sub-portion 14122 can be substantially equal. The thickness of the third sub-portion 14131 and the thickness of the first sub-portion 14121 can be substantially equal, so that the thickness dimension of the first transmission member 141 is relatively thin, and the structure is neat and compact. The thickness of the fourth sub-portion 14132 can be the thickness dimension in the 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 can be the respective thickness dimensions in the direction perpendicular to the first surface 14133.

[0081] Further optionally, the baffle 1414 can be provided with a first opening 14141, and one end of the fourth sub-portion 14132 extending to the first opening 14141 is rotationally connected to the third sub-portion 14131. By extending the fourth sub-portion 14132 to the first opening 14141 of the baffle 1414, the gap between the baffle 1414 and the fourth sub-portion 14132 when the first cover plate 13 is opened can be reduced, the pinch hand phenomenon can be avoided, the safety of the range hood 1 can be improved, and the appearance can also be improved.

[0082] Optionally, the limiting structure 163 of the mounting frame 16 can be provided corresponding to the second sub-portion 14122 and / or the fourth sub-portion 14132. In the embodiment of the application, the limiting structure 163 is provided corresponding to the second sub-portion 14122, and the second sub-portion 14122 is provided with a clamping protrusion 14123. 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 plate 13 moves to the second position.

[0083] In a third exemplary scheme, please refer to Figures 17 to 20 The structure of the present scheme is basically the same as that of the first scheme, and the difference lies in that in the first scheme, the first link 1411, the second link 1412 and the third link 1413 of the first transmission member 141 constitute a four-bar linkage mechanism together with the mounting frame 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 the present scheme, 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 with the output shaft of the driving member 15 through the pushing member.

[0084] Specifically, please refer to Figure 18 and Figure 19The second connecting rod 1412 is installed with the first cover plate 13. The pushing member includes a first pushing rod 1415 and a second pushing rod 1416. The first pushing rod 1415 is rotationally connected with a third connecting position 1433 of the third connecting rod 1413. The third connecting position 1433, the third connecting rod 1413, a fourth connecting position 1434 rotationally connecting the second connecting position 1432 of the first connecting rod 1411, and a fifth connecting position 1435 rotationally connecting the second structure 162 form a triangle. One end of the second pushing rod 1416 is rotationally connected with an end of the first pushing rod 1415 away from the third connecting position 1433, and the other end is connected with an output shaft of the driving member 15.

[0085] The second pushing rod 1416 drives the first pushing rod 1415 to move under the driving of the output shaft of the driving member 15. The first pushing rod 1415 further drives the third connecting rod 1413 to rotate around the fifth connecting position 1435, so that the second connecting rod 1412, which forms a four-connecting-rod mechanism together with the third connecting rod 1413, rotates around the first structure 161, so as to realize the opening and closing of the first cover plate 13 and the first smoking port 112.

[0086] Optionally, the third connecting rod 1413 can be substantially in the shape of a hollow triangular stand. Figure 20 Optionally, the third connecting rod 1413 can be substantially in the shape of a curved knife.

[0087] Optionally, the third connecting rod 1413 can be substantially in the shape of a curved knife. Figure 18 Optionally, the limiting structure 163 of the mounting bracket 16 can be a folded edge. Specifically, the edge of the mounting bracket 16 can be bent to form the limiting structure 163. The limiting structure 163 is used for limiting the limit positions of the second pushing rod 1416 rotating clockwise and counterclockwise along with the output shaft of the driving member 15.

[0088] Optionally, the mounting bracket 16 can be substantially in the shape of a plate structure. The mounting bracket 16 has a fifth plate surface and a sixth plate surface distributed in opposite directions. The first pushing rod 1415, the second pushing rod 1416, and the third connecting rod 1413 can be located on one side of the fifth plate surface of the mounting bracket 16. The first connecting rod 1411, the second connecting rod 1412, and the driving member 15 in the first transmission member 141 can be located on one side of the sixth plate surface of the mounting bracket 16.

[0089] Optionally, the second connecting rod 1412 can be substantially in the shape of a curved hook, so that the second connecting rod 1412 forms an avoiding interval. In this way, when the first transmission member 141 drives the first cover plate 13 to open, the avoiding interval at the second connecting rod 1412 can avoid the shell 11, so that the movement of the first transmission member 141 is more smooth.

[0090] Optionally, please refer to Figure 8 and Figure 9, the range hood 1 further comprises a second cover plate 17 arranged corresponding to the second smoke suction port 113, the second cover plate 17 has a third position and a fourth position, in the third position, the second cover plate 17 closes the second smoke suction port 113, please refer to Figure 9 ; in the fourth position, the second cover plate 17 opens the second smoke suction port 113, please refer to Figure 8 . For example, when the range hood 1 is idle, the second cover plate 17 can be in the third position to close the second smoke suction port 113, so as to avoid dust and the like entering the inner cavity 111 of the shell 11 through the second smoke suction port 113, or to avoid damage caused by exposure of the fan assembly 12. When the range hood 1 is working, the second cover plate 17 can be in the fourth position to open the second smoke suction port 113, so that the oil fume can be sucked into the inner cavity 111 through the second smoke suction port 113 after the fan assembly 12 is started.

[0091] Optionally, the first cover plate 13 is in the first position when the second cover plate 17 is in the third position, and the first cover plate 13 is in the second position when the second cover plate 17 is in the fourth position. So that when the first cover plate 13 closes the first smoke suction port 112, the second cover plate 17 closes the second smoke suction port 113; when the first cover plate 13 opens the first smoke suction port 112, the second cover plate 17 opens the second smoke suction port 113.

[0092] It should be noted that the first cover plate 13 can also be in the second position when the second cover plate 17 is in the third position, and the first cover plate 13 can be in the first position when the second cover plate 17 is in the fourth position. So that the first cover plate 13 and the second cover plate 17 are not synchronized in opening, and the opening of the first smoke suction port 112 or the opening of the second smoke suction port 113 can be flexibly adjusted according to specific needs.

[0093] 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 scratching.

[0094] Please refer to Figure 10 , the range hood 1 can further comprise a second transmission member 142, the second transmission member 142 is connected to the driving member 15 and the second cover plate 17, and is used to switch the second cover plate 17 between the third position and the fourth position under the driving of the driving member 15.

[0095] Optionally, the second transmission member 142 can be used to drive the second cover plate 17 to move in a direction perpendicular to the opening central axis of the second smoke suction port 113 to close or open the second smoke suction port 113 when the driving member 15 drives the movement. Optionally, the second cover plate 17 can move towards the first cover plate 13 to realize the opening of the second smoke suction port 113, and move away from the first cover plate 13 to realize the closing of the second smoke suction port 113.

[0096] It should be noted that the first smoking port 112 and the second smoking port 113 can be independent of each other, i.e., 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 can also be communicated to form a through hole, and part of the through hole is defined as the first smoking port 112 and part of the through hole is defined as the second smoking port 113. When the first smoking port 112 and the second smoking port 113 are communicated to form a through hole, if the first transmission member 141 drives the first cover plate 13 to rotate substantially with the first boundary line 131 as the rotation axis, and the second transmission member 142 drives the second cover plate 17 to move in the direction close to the first cover plate 13, at this time, the area exposed in the through hole on the side of the second cover plate 17 close to the first cover plate 13 can be defined as the first smoking port 112, and the area exposed on the side of the second cover plate 17 away from the first cover plate 13 can be defined as the second smoking port 113.

[0097] Optionally, the second transmission member 142 can be substantially a crank slider mechanism to achieve the driving of the movement of the second cover plate 17. Specifically, referring to Figure 11 , the second transmission member 142 can include a sliding rail 1421, a sliding part 1422, a fourth connecting rod 1423 and a fifth connecting rod 1424. The sliding rail 1421 is arranged on the mounting frame 16 and extends in a direction perpendicular to the opening central axis of the second smoking port 113. The sliding part 1422 is connected to the sliding rail 1421 and can slide along the length direction of the sliding rail 1421, and the second cover plate 17 is mounted on the sliding part 1422. One end of the fourth connecting rod 1423 is rotationally connected to the sliding part 1422, and the other end is rotationally connected to one end of the fifth connecting rod 1424. The other end of the fifth connecting rod 1424 is connected to the output shaft of the driving member 15, and the fifth connecting rod 1424 is used to rotate under the driving of the driving member 15 to make the second cover plate 17 slide along the length direction of the sliding rail 1421 with the sliding part 1422, thereby achieving the closing or opening of the second smoking port 113 by the second cover plate 17.

[0098] Further optionally, in one possible implementation, the sliding part 1422 can include a sliding block 1425, a third plate body 1426 and a fourth plate body 1427. The sliding block 1425 is located in the slide rail 1421 and can slide along the length direction of the slide rail 1421. The third plate body 1426 has a third plate surface 14261 and a fourth plate surface 14262 located at opposite sides. The sliding block 1425 is located at one side of the third plate surface 14261 of the third plate body 1426 and is connected to the third plate body 1426. The second cover plate 17 is located at one side of the fourth plate surface 14262 of the third plate body 1426 and is connected to the third plate body 1426. The fourth plate body 1427 is connected to the third plate body 1426 and is bent and extended away from the fourth plate surface 14262 towards the third plate surface 14261. The fourth plate body 1427 is rotationally connected to the fourth connecting rod 1423. That is, the sliding block 1425 and the fourth plate body 1427 are both arranged at one side of the third plate surface 14261 of the third plate body 1426. In this way, the size of the sliding part 1422 in the direction perpendicular to the third plate surface 14261 can be reduced, and the structural compactness of the sliding part 1422 can be improved.

[0099] Optionally, the mounting rack 16 can include a mounting plate 164 and a bracket 165. The mounting plate 164 is arranged corresponding to the first smoking port 112. The mounting plate 164 can have a plate structure substantially parallel to the opening central axis of the first smoking port 112. The driving member 15, the first structural part 161 and the second structural part 162 are arranged on the plate surface of the mounting plate 164.

[0100] Further optionally, in combination with Figure 11 and Figure 12 , the mounting plate 164 can have a first plate surface 1641 and a second plate surface 1642 located at opposite sides. The first structural part 161, the second structural part 162 and the first transmission member 141 can be located at one side of the first plate surface 1641 of the mounting plate 164. The driving member 15 and the bracket 165 can be located at one side of the second plate surface 1642 of the mounting plate 164.

[0101] The bracket 165 can include a first part 1651 arranged corresponding to the first smoking port 112 and a second part 1652 arranged corresponding to the second smoking port 113. The first part 1651 is connected to the mounting plate 164. The second part 1652 is connected to the first part 1651. The part of the second part 1652 close to the second smoking port 113 can be bent to form a bent part 1653 substantially away from the second plate surface 1642 towards the first plate surface 1641. At this time, the slide rail 1421 of the second transmission member 142 can be mounted on the bent part 1653 of the second part 1652.

[0102] In yet another possible implementation, referring to Figure 22The sliding part 1422 comprises a sliding block 1425, a third plate body 1426 and a fourth plate body 1427. The sliding block 1425 is located in the slide rail 1421 and can slide along the length direction of the slide rail 1421. The third plate body 1426 has a third plate surface 14261 and a fourth plate surface 14262 which are located at opposite sides. The second cover plate 17 is located at the side of the fourth plate surface 14262 of the third plate body 1426 and is connected to the third plate body 1426. The fourth plate body 1427 is connected to the third plate body 1426 and extends in a direction away from the fourth plate surface 14262 of the third plate surface 14261. In the direction parallel to the third plate surface 14261, the third plate body 1426 and the sliding block 1425 are located at opposite sides of the fourth plate body 1427. The fourth plate body 1427 is connected to the sliding block 1425 and the fourth plate body 1427 is rotationally connected to the fourth connecting rod 1423. In the direction parallel to the third plate surface 14261, the third plate body 1426 and the sliding block 1425 are distributed at opposite sides of the fourth plate body 1427. This can reduce the size of the sliding part 1422 in the direction perpendicular to the third plate surface 14261 and improve the structural compactness of the sliding part 1422.

[0103] Further optionally, in the direction parallel to the third plate surface 14261, the fourth connecting rod 1423, the slide rail 1421 and the sliding block 1425 can be located at the same side of the fourth plate body 1427.

[0104] Optionally, when the first transmission member 141 adopts the third scheme, please refer to Figure 20 and Figure 21 The second push rod 1416 can share the same component with the fifth connecting rod 1424 of the second transmission member 142. Specifically, if the second push rod 1416 and the fifth connecting rod 1424 share the same component, the component has a sixth connecting site 1436, a seventh connecting site 1437 and an eighth connecting site 1438 which are spaced apart from each other. The sixth connecting site 1436 is connected to the output shaft of the driving member 15. The seventh connecting site 1437 is rotationally connected to the end of the first push rod 1415 away from the third connecting rod 1413, so that the part between the sixth connecting site 1436 and the seventh connecting site 1437 constitutes the second push rod 1416. The eighth connecting site 1438 is rotationally connected to the end of the fourth connecting rod 1423 away from the sliding part 1422, so that the part between the sixth connecting site 1436 and the eighth connecting site 1438 constitutes the fifth connecting rod 1424.

[0105] Further optionally, the sixth connecting site 1436, the seventh connecting site 1437 and the eighth connecting site 1438 can be located on the same straight line or can form a triangle. The embodiments of the present application do not make any limitation in this regard.

[0106] Optionally, please refer to Figure 22The range hood 1 can further include an elastic member 18, which can extend along the length direction of the slide rail 1421 and has two ends connected to the mounting frame 16 and the slide part 1422, respectively. The slide part 1422 is connected to the mounting frame 16 through the elastic member 18. In this way, the gravity of the second transmission member 142 and the second cover plate 17 can be transmitted to the mounting frame 16 through the elastic member 18, so that the force required by the driving member 15 to maintain the balance of the second cover plate 17 can be reduced, and then a driving member 15 with small size and low cost can be selected. Alternatively, the elastic member 18 can be distributed in the vertical direction to maximize the offset of the gravity of the second cover plate 17 and reduce the use cost of the driving member 15. The elastic member 18 can be any component that can be deformed, such as a spring, and the embodiments of the present application do not make any limitation in this regard.

[0107] Alternatively, the first transmission member 141 and the second transmission member 142 are both connected to the output shaft of the driving member 15. In this way, the same driving member 15 can drive the first transmission member 141 and the second transmission member 142 to move at the same time, so as to realize 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 the embodiments of the present application, the third connecting rod 1413 of the first transmission member 141 and the fifth connecting rod 1424 of the second transmission member 142 can be connected to the output shaft of the driving member 15.

[0108] Alternatively, referring to Figure 23 and Figure 24 In a feasible solution, the range hood 1 can include a first mesh plate 191 and a connecting plate 192. The first mesh plate 191 is located on the side of the inner plate surface of the first cover plate 13, and a plurality of mesh holes 1911 are arranged on the first mesh plate 191. The connecting plate 192 is connected between the first mesh plate 191 and the first cover plate 13 and encloses the first mesh plate 191, the first cover plate 13 and the connecting plate 192 to form a smoke guide cavity 193. The smoke guide cavity 193 is in communication with the inner cavity 111 of the shell 11. When the first cover plate 13 is in the first position, the first mesh plate 191 is located in the shell 11. When the first cover plate 13 is in the second position, the first mesh plate 191 is located outside the shell 11, and the first smoke suction port 112 is in communication with the outside through the mesh holes 1911.

[0109] Further alternatively, the first mesh plate 191 and the connecting plate 192 can be an integrated structure. The range hood 1 can further include a first connecting member 194 connected between the connecting plate 192 and the first cover plate 13. More specifically, the first connecting member 194 can include a first connecting piece (not shown in the figure) attached to the inner plate surface of the first cover plate 13 and a second connecting piece 1941 attached to the outer peripheral surface of the connecting plate 192. The first connecting piece and the second connecting piece 1941 are connected.

[0110] The first connecting member 194 can also be connected with the first transmission member 141 to realize the connection of the first cover plate 13 and the first transmission member 141. More specifically, the first connecting member 194 can be connected with the baffle 1414 to realize the connection of the first cover plate 13 and the first transmission member 141.

[0111] Optionally, when the first cover plate 13 is in the second position, the included angle between the plate surface of the first mesh plate 191 and the cooktop plane p can 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, the edge line of the plate surface of the first mesh plate 191, which is close to the opening end surface of the first smoke suction port 112, can be located between the edge line of the opening end surface of the first smoke suction 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 mesh plate 191 is opened obliquely upward rather than obliquely downward.

[0112] In yet another possible implementation, referring to Figure 25 and Figure 26 , the first mesh plate 191 can be arranged corresponding to the first smoke suction port 112 and connected with the housing 11. In the second position, the first smoke suction port 112 is communicated with the outside through the mesh holes 1911 on the first mesh plate 191. Since the first mesh plate 191 is connected with the housing 11, when the first cover plate 13 is switched between the first position and the second position, the first mesh plate 191 will not move with the first cover plate 13, which can reduce the driving force requirement of the driving member 15, and thus a small-size and low-cost driving member 15 can be selected. Moreover, since the first mesh plate 191 is directly connected with the housing 11, the structural stability of the first mesh plate 191 after long-term use can be ensured, and falling off or scratching can be avoided.

[0113] Optionally, the first mesh plate 191 can be connected with the mounting frame 16 in the housing 11, so as to realize the installation of the first mesh plate 191 at the first smoke suction port 112.

[0114] Optionally, the range hood 1 can further include a second mesh plate 196 arranged at the second smoke suction port 113, and the second mesh plate 196 can be connected with the housing 11. Optionally, the second mesh plate 196 can be connected with the mounting frame 16 in the housing 11, so as to realize the installation of the second mesh plate 196 at the second smoke suction port 113.

[0115] In yet another possible implementation, referring to Figure 27 and Figure 28 , no mesh plate can be arranged at the first smoke suction port 112 and the second smoke suction port 113, so that the oil fume can directly enter the inner cavity 111 through the first smoke suction port 112 and the second smoke suction port 113.

[0116] Optionally, referring again to Figure 24The range hood 1 can further include a second connecting member 195 connected between the second cover plate 17 and the second transmission member 142. More specifically, the second connecting member 195 can be attached to the inner plate surface of the second cover plate 17 and connected to the sliding portion 1422 of the second transmission member 142.

[0117] Optionally, the driving member 15 can include a motor 151, and the output shaft of the driving member 15 can correspond to the output shaft of the motor 151. The motor 151 has a first state and a second state. In the first state, the motor 151 drives the first transmission member 141 to move so that the first cover plate 13 is located at the first position. In the second state, the motor 151 drives the first transmission member 141 to move so that the first cover plate 13 is located at the second position. When the motor 151 is switched from the first state to the second state, the rotation stroke of the output shaft of the motor 151 can be greater than or equal to 85° and less than or equal to 95°. The rotation stroke of the output shaft of the motor 151 will affect the rotation stroke of the first cover plate 13 when it is switched from the first position to the second position, that is, the opening degree of the first cover plate 13 to the first smoke inlet 112. Reasonable limitation of the rotation stroke of the output shaft of the motor 151 can ensure good smoking effect at the first smoke inlet 112 on the premise of reducing the power consumption of the motor 151.

[0118] Optionally, when the first cover plate 13 is switched from the first position to the second position, the rotation stroke of the first cover plate 13 around the first boundary line 131 can be greater than or equal to 65° and less than or equal to 75°. Optionally, when the second cover plate 17 is switched from the third position to the fourth position, the movement stroke of the second cover plate 17 in the direction perpendicular to the central axis of the opening of the second smoke inlet 113 can be greater than or equal to 100 mm and less than or equal to 110 mm.

[0119] Optionally, the number of the first transmission members 141 can be two, and the inner plate surface of the first cover plate 13 has a first edge 132 and a second edge 133 distributed oppositely. The two first transmission members 141 are respectively located on the side of the first edge 132 of the first cover plate 13 and the side of the second edge 133 of the first cover plate 13.

[0120] The driving member 15 can be provided corresponding to one of the first transmission members 141 and connected to one of the first transmission members 141. The two first transmission members 141 are drivingly connected through the transmission rod 144. By providing the first transmission member 141 on both sides of the first cover plate 13, the stability of the first cover plate 13 during movement can be improved.

[0121] The two ends of the transmission rod 144 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 the same in structure, and the two first transmission members 141 can be arranged in a mirror image. Optionally, when the number of the first transmission members 141 is two, the number of the mounting frames 16 can also be two, and each mounting frame 16 is provided with a first transmission member 141.

[0122] Optionally, the number of the second transmission members 142 can also be two, and each second transmission member 142 is provided with a first transmission member 141, and the two second transmission members 142 are also connected by the transmission rod 144. Optionally, the two second transmission members 142 are the same in structure, and the two second transmission members 142 can be arranged in a mirror image.

[0123] The transmission rod 144 is located in the inner cavity 111. Optionally, the transmission rod 144 can be provided with the first cover plate 13, please refer to Figure 10 . It should be noted that the transmission rod 144 can also be provided with the second cover plate 17, please refer to Figure 17 , and the embodiments of the present application do not make any limitation on this. Optionally, the transmission rod 144 can be located on the side of the fan assembly 12 close to the first cover plate 13 or the side of the fan assembly 12 close to the second cover plate 17, and the transmission rod 144 can also be located on the side of the fan assembly 12 away from the first cover plate 13 or the side of the fan assembly 12 away from the second cover plate 17. The design form of the transmission rod 144 has diversity, and can be flexibly adjusted according to specific needs.

[0124] Optionally, please refer to Figure 27 , the outer plate surface of the first cover plate 13 in the first position and the outer plate surface of the second cover plate 17 in the third position can be located in the same plane to improve the appearance flatness and aesthetics of the range hood 1, and facilitate cleaning.

[0125] Optionally, the gap between the first cover plate 13 in the first position and the second cover plate 17 in the third position can be greater than or equal to 3 mm and less than or equal to 5 mm, so as to realize the miniaturization of the 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 smoothly opened and closed.

[0126] It should be noted that the first smoke suction port 112 and / or the second smoke suction port 113 can be opened not only during cooking to suck in the oil fume, but also when not cooking to purify the indoor air. Of course, the housing 11 can also be additionally provided with the ventilation port 110 to purify the indoor air through the ventilation port 110, and the embodiments of the present application do not make any limitation in this regard. Optionally, when the ventilation port 110 is provided on the housing 11, the range hood 1 can be periodically automatically operated at a given gear under the pre-setting of the user to improve the air quality of the kitchen environment. Optionally, the total ventilation area of the ventilation port 110 should be less than or equal to 10% of the total ventilation area of the other ventilation under the normal operating state of the entire range hood 1. Among them, the total ventilation area of the other ventilation under the normal operating state of the entire range hood 1 can include the sum of the ventilation areas of the first smoke suction port 112 and the second smoke suction port 113.

[0127] In an exemplary scheme, in combination with Figure 9 The ventilation port 110 can be in communication with the first smoke suction port 112 and / or the second smoke suction port 113, and the range hood 1 can be in communication with the outside through the ventilation port 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 ventilation port 110 is in communication with the first smoke suction port 112 and the first smoke suction port 112 is provided with the first mesh plate 191, the first mesh plate 191 can also extend to the ventilation port 110, so that the ventilation port 110 is in communication with the outside through the mesh holes 1911 on the first mesh plate 191, and the safety of the range hood 1 is improved. Optionally, when the ventilation port 110 is in communication with the second smoke suction port 113 and the second smoke suction port 113 is provided with the second mesh plate 196, the second mesh plate 196 can also extend to the ventilation port 110. In another exemplary scheme, in combination with Figure 27 and Figure 28 The ventilation port 110 can be independent of the first smoke suction port 112 and independent of the second smoke suction port 113. The ventilation port 110 can include a plurality of small holes arranged at intervals to improve the safety performance of the range hood 1.

[0128] Optionally, the ventilation port 110 can be located on the side of the first smoke suction port 112 away from the cooktop plane p, or on the side of the second smoke suction port 113 close to the cooktop plane p, and the embodiments of the present application do not make any limitation on the specific setting position of the ventilation port 110. It should be noted that the range hood 1 can also be provided without the ventilation port 110, so that the range hood 1 is in a substantially closed state when the first cover plate 13 is in the first position and the second cover plate 17 is in the third position.

[0129] Optionally, the range hood 1 can also include an oil cup 197 located at the bottom of the housing 11.

[0130] Please refer again to Figures 1 to 5In an embodiment, the front plate 122 of the fan assembly 12 is arranged close to the first plate body 114 of the housing 11. In this way, the oil fume can enter the air inlet 121 of the fan assembly 12 in time after entering the inner cavity 111 of the housing 11 through the first smoke suction port 112 and the second smoke suction port 113 on the first plate body 114, so that the oil fume absorption speed is fast and the absorption efficiency is high; and the structure of the range hood 1 can be made thinner.

[0131] Further optionally, in Figures 1-5 In an embodiment shown in FIG. 11, more than 15% of the first area 1211 can be located in the second area 1121. Preferably, more than 20% of the first area 1211 can be located in the second area 1121. Optionally, the maximum dimension h1 of the third area 1131 in the direction perpendicular to the plane p of the cooking bench can be greater than or equal to 80 mm.

[0132] Optionally, in Figures 1-5 In an embodiment shown in FIG. 11, if the range hood 1 includes the first cover plate 13, the projection area of the first cover plate 13 in the first plane a at the first position is a fourth area, and the edge line of the fourth area away from the second smoke suction port 113 is located on the side of the first area 1211 away from the second smoke suction port 113. The edge line of the fourth area away from the second smoke suction port 113 can be the upper edge line of the fourth area. This ensures that the air inlet 121 has sufficient direct exposure area, preventing additional noise and air performance deterioration due to excessive shielding area of the fan assembly 12. Further optionally, the edge line of the fourth area away from the second smoke suction port 113 can be located on the side of the volute of the fan assembly 12 away from the second smoke suction port 113.

[0133] Optionally, in Figures 1-5 In an embodiment shown in FIG. 11, the distance between the front plate 122 and the first plate body 114 is greater than or equal to 20 mm and less than or equal to 50 mm. Optionally, the distance between the rear plate 123 and the second plate body 115 is greater than or equal to 15 mm and less than or equal to 40 mm.

[0134] In another embodiment, the front plate 122 on the fan assembly 12 is arranged close to the second plate body 115 of the housing 11. This embodiment can reduce the noise of the range hood 1 during use and improve the user experience, because the front plate 122 provided with the air inlet 121 is arranged away from the first plate body 114 provided with the first smoke inlet 112 and the second smoke inlet 113. Optionally, the maximum dimension h1 of the third region 1131 in the direction perpendicular to the cooktop plane p is greater than or equal to 70 mm. Preferably, the maximum dimension h1 of the third region 1131 in the direction perpendicular to the cooktop plane p is greater than or equal to 100 mm. Optionally, in the first position, the projection area of the first cover plate 13 in the first plane a is a fourth region, and the side line of the fourth region away from the second smoke inlet 113 is located on a first straight line away from the second smoke inlet 113 in the first region 1211; in the direction perpendicular to the cooktop plane p, the spacing between the first straight line and the side line of the first region 1211 away from the second smoke inlet 113 is 20 mm. Optionally, the spacing between the rear plate 123 and the first plate body 114 is greater than or equal to 25 mm and less than or equal to 60 mm; and / or, the spacing between the front plate 122 and the second plate body 115 is greater than or equal to 10 mm and less than or equal to 30 mm.

[0135] The above description is only the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A range hood characterized by, The range enclosed by the contour line of the air inlet on the first plane is a first area, the range enclosed by the contour line of the first smoke outlet on the first plane is a second area, and more than 10% of the first area is located in the second area. The shell includes a first plate body and a second plate body distributed on opposite sides of the fan assembly along the rotation axis direction, the first plate body is provided with the first smoke outlet and the second smoke outlet, and the shell further includes a side plate connected between the first plate body and the second plate body. The side plate includes a first side plate and a second side plate spaced apart along a first direction, and the side plate further includes a third side plate and a fourth side plate opposite to each other, the third side plate connects the first side plate and the second side plate, and the fourth side plate connects the first side plate and the second side plate. The third side plate is farther away from the cooktop plane than the fourth side plate. The range enclosed by the contour line of the second smoke outlet on the first plane is a third area, and the maximum dimension of the third area in the direction perpendicular to the cooktop plane is greater than or equal to 50 mm. The air inlet of the fan assembly is located on the side of the fan assembly close to the first plate body.

4. The range enclosed by the contour line of the air inlet on the first plane is a first area, the range enclosed by the contour line of the first smoke outlet on the first plane is a second area, and more than 10% of the first area is located in the second area. ​ ​ 2. The range hood of claim 1, wherein, ​ 3. The range hood according to claim 1, wherein ​ ​ ​ A third area surrounded by a projection of a contour line of the second smoking port on the first plane has a maximum dimension in a direction perpendicular to the cooktop plane greater than or equal to 80 mm.

5. The range hood according to claim 1, wherein The air inlet of the fan assembly is located on a side of the fan assembly facing away from the first plate body.

6. The range hood of claim 5, wherein, A third area surrounded by a projection of a contour line of the second smoking port on the first plane has a maximum dimension in a direction perpendicular to the cooktop plane greater than or equal to 70 mm.

7. The range hood according to claim 1, wherein Further comprising: A first cover plate is arranged corresponding to the first smoking port, the first cover plate has a first position and a second position, the first cover plate closes the first smoking port in the first position, and the first cover plate opens the first smoking port in the second position; in the second position, a distance between an edge of the first cover plate close to the second smoking port and a second plane is greater than a distance between an edge of the first cover plate away from the second smoking port and the second plane, and the second plane is perpendicular to a central axis of the opening of the first smoking port and located on a side of the first cover plate close to the first smoking port.

8. The range hood of claim 7, wherein, The air inlet of the fan assembly is located on a side of the fan assembly close to the first plate body, In the first position, a projection area of the first cover plate in the first plane is a fourth area, and an edge of the fourth area away from the second smoking port is located on a side of the first area away from the second smoking port.

9. The range hood of claim 7, wherein, The air inlet of the fan assembly is located on a side of the fan assembly facing away from the first plate body, In the first position, a projection area of the first cover plate in the first plane is a fourth area, and an edge of the fourth area away from the second smoking port is located on a side of a first straight line in the first area away from the second smoking port; in a direction perpendicular to the cooktop plane, a distance between the first straight line and an edge of the first area away from the second smoking port is 20 mm.

10. The range hood according to claim 1, wherein The fan assembly has a front plate on which the air inlet is arranged, 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 a distance between the front plate and the first plate body is greater than or equal to 20 mm and less than or equal to 50 mm; and / or The front plate of the fan assembly is arranged close to the first plate body, and a distance between the rear plate and the second plate body is greater than or equal to 15 mm and less than or equal to 40 mm; and / or The rear plate of the fan assembly is arranged close to the first plate body, and a distance between the rear plate and the first plate body is greater than or equal to 25 mm and less than or equal to 60 mm; and / or The rear plate of the fan assembly is arranged close to the first plate body, and a distance between the front plate and the second plate body is greater than or equal to 10 mm and less than or equal to 30 mm.

11. The range hood according to claim 1, wherein Further comprising: A shielding plate is arranged in the inner cavity of the housing and corresponding to the second smoking port; the shielding plate shields the fan assembly in a direction of the rotation axis of the fan assembly.

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