Range hood

Abstract

The application discloses a range hood, which comprises a first shell, a second shell and a first cover plate. The first shell is formed with a first inner cavity and a first smoke suction port. The second shell protrudes from the first plate body and is formed with a second inner cavity and a second smoke suction port. The first cover plate has a first position and a second position. In the second position, the first cover plate opens the first smoke suction port and is located on the side of the second plate body away from the first plate body. In the second position, the first cover plate, the first plate body and the second plate body form a smoke gathering cavity, which is communicated with the first smoke suction port and the second smoke suction port. The first cover plate can gather oil fume, so that the oil fume is easily introduced into the first inner cavity through the first smoke suction port and into the second inner cavity through the second smoke suction port. The inner plate surface of the opened first cover plate can guide the transmission of the oil fume, the smoke intake amount at the first smoke suction port and the second smoke suction port is increased, and the use effect of the range hood is improved.

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 problem of poor oil fume absorption effect. SUMMARY

[0003] The main purpose of the present application is to provide a range hood, which aims to improve the problem of poor smoke absorption effect of the range hood in the related art.

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

[0005] A first shell is formed with a first inner cavity and a first smoke suction port in communication with the first inner cavity, and the first shell comprises a first plate body, and the first smoke suction port is arranged on the first plate body;

[0006] A second shell is located on the side of the first smoke suction port of the first plate body away from the cooking bench plane and protrudes from the first plate body in use, and the second shell is formed with a second inner cavity in communication with the first inner cavity and a second smoke suction port in communication with the second inner cavity, and the second shell comprises a second plate body facing the cooking bench plane in use, and the second smoke suction port is arranged on the second plate body; and

[0007] A first cover plate has a first position and a second position, and the first cover plate closes the first smoke suction port in the first position; the first cover plate opens the first smoke suction port and is located on the side of the second smoke suction port of the second plate body away from the first plate body in the second position, and a smoke gathering cavity is formed between the first cover plate, the first plate body and the second plate body in the second position, and the smoke gathering cavity is in communication with the first smoke suction port and the second smoke suction port.

[0008] In the technical scheme of the present application, when the first cover plate is in the second position, the first cover plate can gather the oil fume, so that the oil fume can be gathered in the smoke gathering cavity, and then the oil fume can enter the first inner cavity through the first smoke suction port and enter the second inner cavity through the second smoke suction port. The inner plate surface of the opened first cover plate can guide the transmission of the oil fume, which can improve the smoke intake amount at the first smoke suction port and the second smoke suction port and improve the use effect of the range hood. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor.

[0010] Figure 1 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet.

[0011] Figure 2 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet. Figure 1 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet.

[0012] Figure 3 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet. Figure 1

[0013] The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet. Figure 4

[0014] The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet. Figure 5 Figure 4 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet.

[0015] Figure 6 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet.

[0016] Figure 7 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet.

[0017] Figure 8 Figure 1 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet.

[0018] Figure 9 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet. Figure 1

[0019] The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet. Figure 10 Figure 1 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet.

[0020] Figure 11 Figure 10 The first kind of range hood provided by the embodiment of the present application is shown in the perspective view when the first cover plate opens the first smoke inlet.

[0021] ​​​​Brief Description of Drawings: 1, range hood; 11, first housing; 111, first inner cavity; 112, first smoke suction port; 1121, second area; 113, smoke gathering cavity; 114, first plate body; 1141, seventh edge line; 1142, eighth edge line; 115, third plate body; 1151, ninth edge line; 1152, tenth edge line; 116, side plate; 1161, first side plate; 1162, second side plate; 117, first flow guide plate; 118, check valve; 1181, connecting plate; 1182, fifth edge line; 1183, sixth edge line; 119, mesh plate; 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 edge line; 132, second edge line; 133, first edge; 134, second edge; 14, second housing; 142, second smoke suction port; 143, second plate body; 1431, third edge line; 1432, fourth edge line; 144, fourth plate body; 145, fifth plate body; 146, sixth plate body; 147, seventh plate body; 148, third area; 151, first transmission member; 1511, first connecting rod; 1512, second connecting rod; 1513, third connecting rod; 15131, clamping convex; 1514, fourth connecting rod; 1515, fifth connecting rod; 15151, first surface; 1516, baffle; 15161, first opening; 152, driving member; 1521, motor; 1531, first connecting part; 1532, second connecting part; 154, transmission rod; 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, bending part; p, cooktop plane; a, second plane; x, first direction; y, central axis.

[0022] 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

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0024] 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 specific posture (as shown in the drawings), and if the specific posture changes, the direction indications will also change accordingly.

[0025] In addition, the descriptions such as "first", "second" and the like in the present application are only for descriptive purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0026] 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 directly connected, or indirectly connected through intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] 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 skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0028] Please refer to Figure 1 and Figure 2 The embodiments of the present application propose an extractor hood 1, which comprises a first shell 11, a fan assembly 12, a first cover plate 13 and a second shell 14.

[0029] Specifically, the first shell 11 is formed with a first inner cavity 111 and a first smoke suction port 112 communicating with the first inner cavity 111, and the first shell 11 comprises a first plate body 114, and the first smoke suction port 112 is arranged on the first plate body 114. The second shell 14 is located on the side of the first smoke suction port 112 of the first plate body 114 away from the cooking bench plane p and protrudes from the first plate body 114 during use, and the second shell 14 is formed with a second inner cavity (not shown in the figure) communicating with the first inner cavity 111 and a second smoke suction port 142 communicating with the second inner cavity, and the second shell 14 comprises a second plate body 143 facing the cooking bench plane p during use, and the second smoke suction port 142 is arranged on the second plate body 143.

[0030] Optionally, the second shell 14 protrudes from the first plate body 114 in use. It can be understood that if a projection of an outer surface of the first plate body 114 on the cooking bench plane p is defined as a first projection, and a projection of the second shell 14 on the cooking bench plane p is defined as a second projection, the second projection can have a part located outside the first projection. The outer surface of the first plate body 114 refers to a surface of the first plate body 114 facing away from the first inner cavity 111, and the outside of the first projection refers to a side of the first projection away from the first inner cavity 111.

[0031] Preferably, if a contour line of the second smoke suction port 142 on the cooking bench plane p is defined as a third projection, the third projection can have a part located outside the first projection. This allows oil fume generated at the cooking bench plane p to more easily enter the second smoke suction port 142.

[0032] In combination with Figure 1 and Figure 2 , the first cover plate 13 has a first position and a second position. In the first position, the first cover plate 13 closes the first smoke suction port 112. In the second position, the first cover plate 13 opens the first smoke suction port 112. 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 prevent dust and the like from entering the first inner cavity 111 of the first shell 11 through the first smoke suction port 112, or to prevent the fan assembly 12 from being exposed and damaged. 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 oil fume can be sucked into the first inner cavity 111 through the first smoke suction port 112 after the fan assembly 12 is started.

[0033] Further preferably, in the second position, the first cover plate 13 can be located on a side of the second smoke suction port 142 of the second plate body 143 away from the first plate body 114, and a smoke gathering cavity 113 is formed between the first cover plate 13, the first plate body 114 and the second plate body 143 in the second position. The smoke gathering cavity 113 is in communication with the first smoke suction port 112 and the second smoke suction port 142. In the second position, the first cover plate 13 can have an effect of gathering oil fume, so that oil fume can be gathered in the smoke gathering cavity 113, and then enter the first inner cavity 111 through the first smoke suction port 112 and enter the second inner cavity through the second smoke suction port 142.

[0034] Optionally, in combination with Figure 1In the second position, the distance between the first edge line 131 of the first cover plate 13 close to the cooking table plane p and the first plane is greater than the distance between the second edge line 132 of the first cover plate 13 away from the cooking table plane p and the first plane in use, and the first plane is perpendicular to the opening central axis of the first smoke suction port 112 and located on the side of the first cover plate 13 close to the first smoke suction port 112. In this way, in the second position, the end of the smoke collection cavity 113 close to the cooking table plane p is wider, and the end away from the cooking table plane p is narrower, facilitating the oil fume generated at the cooking table plane p to enter the smoke collection cavity 113 through the wider opening, and ensuring the smoke entering amount. Moreover, the oil fume entering the smoke collection cavity 113 can be blocked by the inner plate surface of the opened first cover plate 13 to enter the first smoke suction port 112 and the second smoke suction port 142; that is, the opened first cover plate 13 can guide the transmission of the oil fume, and can improve the smoke entering amount at the first smoke suction port 112 and the second smoke suction port 142, and improve the use effect of the range hood 1.

[0035] Optionally, in combination with Figure 2 The second plate body 143 can be substantially a flat plate, and the included angle between the second plate body 143 and the cooking table plane p in use can be greater than or equal to 3°, and the third edge line 1431 of the second plate body 143 close to the first plate body 114 is located between the fourth edge line 1432 of the second plate body 143 away from the first plate body 114 and the cooking table plane p. In order to ensure that the oil fume can smoothly enter the first housing 11 and / or the second housing 14, and to ensure that the condensed oil will not drip. It should be noted that the second plate body 143 can also be substantially an arc-shaped plate, at this time, the second plate body 143 can be convexly arranged towards the direction close to the cooking table plane p, or can be convexly arranged towards the direction away from the cooking table plane p, and the embodiments of the present application do not make any limitation thereon.

[0036] The first housing 11 further comprises a third plate body 115 arranged opposite to the first plate body 114, wherein the third plate body 115 can be used to be attached to the wall surface in use of the range hood 1. Optionally, the maximum distance between the second housing 14 and the third plate body 115 in the direction perpendicular to the third plate body 115 is less than or equal to 450 mm. The maximum distance between the second housing 14 and the third plate body 115 can be the distance between the point on the second housing 14 farthest from the third plate body 115 and the third plate body 115. Since the maximum thickness of the range hood 1 will be formed at the second housing 14 in the direction perpendicular to the third plate body 115, by limiting the size, it is beneficial to design the range hood 1 to be thinner, and to avoid the problem of head collision. Preferably, the maximum distance between the second housing 14 and the third plate body 115 in the direction perpendicular to the third plate body 115 is less than or equal to 350 mm.

[0037] Optionally, the second shell 14 can comprise a fourth plate body 144 disposed opposite to the first shell 11, the second plate body 143 is located between the first shell 11 and the fourth plate body 144, and the second shell 14 can further comprise a fifth plate body 145, a sixth plate body 146 and a seventh plate body 147 located between the first shell 11 and the fourth plate body 144, the fifth plate body 145 is spaced apart from the second plate body 143, the sixth plate body 146 and the seventh plate body 147 are oppositely disposed, and the sixth plate body 146 is connected between one end of the fifth plate body 145 and one end of the second plate body 143, and the seventh plate body 147 is connected between the other end of the fifth plate body 145 and the other end of the second plate body 143.

[0038] Optionally, the second plate body 143, the fourth plate body 144, the fifth plate body 145, the sixth plate body 146 and the seventh plate body 147 can all be flat plates. The sixth plate body 146 can be substantially trapezoidal, and the upper base of the trapezoid is connected to the fourth plate body 144, and the lower base of the trapezoid is connected to the first shell 11. The seventh plate body 147 can be substantially trapezoidal, and the upper base of the trapezoid is connected to the fourth plate body 144, and the lower base of the trapezoid is connected to the first shell 11. Optionally, the sixth plate body 146 and the seventh plate body 147 can also be substantially parallelogram or any other arbitrary shape, and the embodiments of the present application do not make any limitation in this regard.

[0039] Optionally, in combination with Figure 1 , in the direction perpendicular to the third plate body 115, the maximum distance between the first cover plate 13 in the second position and the third plate body 115 is greater than or equal to 350 mm. Among them, the maximum distance between the first cover plate 13 in the second position and the third plate body 115 can be the distance between the farthest point on the first cover plate 13 in the second position and the third plate body 115. By limiting this distance, the opening range of the first cover plate 13 can be limited, and the amount of smoke at the first smoke inlet 112 and the second smoke inlet 142 can be guaranteed. Preferably, in the direction perpendicular to the third plate body 115, the maximum distance between the first cover plate 13 in the second position and the third plate body 115 is greater than or equal to 400 mm.

[0040] The fan assembly 12 is located in the first inner cavity 111, and the fan assembly 12 has an air inlet 121 for generating a negative pressure suction force to enable the oil fume to be sucked into the first inner cavity 111 through the first smoke inlet 112 and / or into the second inner cavity through the second smoke inlet 142, without causing the kitchen to be filled with oil fume, so as to improve the user's experience when cooking.

[0041] In order to ensure that the range hood 1 has a better oil fume absorption effect, please combine Figure 1 and Figure 3If the projection of the outline of the air inlet 121 of the fan assembly 12 on the second plane a is defined as a first area 1211, and the projection of the outline of the first smoke inlet 112 on the second plane a is defined as a second area 1121, more than 80% of the first area 1211 can be located in the second area 1121 in the second position. The second plane a is perpendicular to the rotation axis 1212 of the fan assembly 12.

[0042] More than 80% of the first area 1211 located in the second area 1121 can be roughly understood as: more than 80% of the area surrounded by the entire opening of the air inlet 121 will be opposite to the first smoke inlet 112, so as to ensure that the first smoke inlet 112 has sufficient negative pressure suction, thereby ensuring the oil fume absorption effect of the first smoke inlet 112.

[0043] Optionally, the rotation axis 1212 of the fan assembly 12 can be parallel to the cooktop plane p, at this time, the second plane a perpendicular to the rotation axis 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, that is, 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.

[0044] Optionally, the range hood 1 can have a first working mode and a second working mode. In the first working mode, the first smoke inlet 112 is closed and the second smoke inlet 142 is opened, which can be combined with Figure 2 In the second working mode, the first smoke inlet 112 is opened and the second smoke inlet 142 is opened, which can be combined with Figure 1 In the first working mode, the oil fume mainly enters the second inner cavity through the second smoke inlet 142 and is finally discharged; optionally, the first working mode can be operated during cooking such as steaming, which has less oil fume, and / or the first working mode can be operated when cooking is not performed to purify indoor air. In the second working mode, the oil fume can enter the first inner cavity 111 through the first smoke inlet 112 and enter the second inner cavity through the second smoke inlet 142; optionally, the second working mode can be operated during cooking such as stir-frying, which has more oil fume.

[0045] Optionally, the first plate body 114 and the third plate body 115 can be 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 and the third plate body 115 can be substantially parallel. The first plate body 114 and the third plate body 115 can be substantially flat plates.

[0046] The first shell 11 can further include a side plate 116 connected between the first plate body 114 and the third plate body 115, and the first plate body 114, the third plate body 115 and the side plate 116 can jointly define the first inner cavity 111.

[0047] Optionally, in an exemplary scheme, referring to Figure 4 , the outer contour line of the inner plate surface of the first plate body 114 can have a seventh edge line 1141 and an eighth 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 third plate body 115 on the inner plate surface of the first plate body 114 can have a ninth edge line 1151 and a tenth edge line 1152 distributed opposite to each other along the first direction x, the ninth edge line 1151 can be located between the seventh edge line 1141 and the eighth edge line 1142, and the tenth edge line 1152 can be located between the seventh edge line 1141 and the eighth 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 first inner cavity 111 of the first shell 11 along the first direction x at the first plate body 114 is smaller than the dimension along the first direction x at the third plate body 115, which is conducive to the flow of air in the range hood 1.

[0048] Optionally, along the first direction x, the spacing between the ninth edge line 1151 and the tenth edge line 1152 can be at least 60mm smaller than the spacing between the seventh edge line 1141 and the eighth edge line 1142.

[0049] Optionally, referring to Figure 5 , the side plate 116 can include a first side plate 1161 and a second side plate 1162 spaced apart along the first direction x. 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 side plate 1162 and the first plate body 114 can be greater than or equal to 30° and less than 90°.

[0050] In another exemplary scheme, referring to Figure 6 , the range hood 1 can include at least one first flow guide plate 117, the first flow guide plate 117 is located in the first inner cavity 111 of the first 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 third plate body 115; and in the direction from the first plate body 114 to the third plate body 115, the spacing between the first flow guide plate 117 and the rotation axis 1212 gradually decreases.

[0051] When the first flow guide plate 117 is arranged in the range hood 1, the first flow guide plate 117 can be used to adjust the structure of the first inner cavity 111 and diversify the structure design of the side plate 116. For example, the first flow guide plate 117 can be used to make the width dimension of the first inner cavity 111 of the first shell 11 along the first direction x at the first plate body 114 smaller than the dimension along the first direction x at the third plate body 115.

[0052] Optionally, the number of the first flow guide plate 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 substantially balanced, and the oil fume absorption effect on both sides of the fan assembly 12 is substantially balanced.

[0053] Optionally, 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. Optionally, the rotation axis 1212 of the fan assembly 12 can be parallel to the central axis y of the first shell 11. Preferably, the distance between the rotation axis 1212 of the fan assembly 12 and the central axis y of the first 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 difference in smoke absorption on the left and right sides of the fan assembly 12 while meeting the installation requirements.

[0054] To improve the safety performance of the fan assembly 12, the fan assembly 12 can further include a safety net 124, which 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 away from the front plate 122.

[0055] It should be noted that the space distance between the safety net 124 on the fan assembly 12 and the first shell 11 and the first cover plate 13 in any state can be greater than or equal to 2 mm to ensure the normal operation of the range hood 1 and avoid scratching. Optionally, please refer to Figure 7 , the range hood 1 can further include a mesh plate 119 arranged at the first smoke suction port 112, and the mesh plate 119 can be connected to the first shell 11. Optionally, the space distance between the safety net 124 on the fan assembly 12 and the mesh plate 119 can be greater than or equal to 2 mm to ensure the normal operation of the range hood 1 and avoid scratching.

[0056] Optionally, please refer to Figure 7 and Figure 8, the range hood 1 further comprises a check valve 118 located at the top of the first housing 11. Specifically, the check valve can have a connecting plate 1181 connected to the first housing 11, the connecting plate 1181 having a fifth edge line 1182 and a sixth edge line 1183 distributed away from each other along the first direction x, the spacing h1 between the fifth edge line 1182 and the middle axis y being less than or equal to 250 mm; preferably less than or equal to 200 mm. Optionally, the spacing between the sixth edge line 1183 and the middle axis y 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 there is no need to adjust the cabinet for European users, and the adaptability is stronger.

[0057] Please refer to Figure 9 , the range hood 1 can further comprise a first transmission member 151 and a driving member 152, the first transmission member 151 being connected to the driving member 152 and the first cover plate 13, for driving the first cover plate 13 to switch between the first position and the second position under the driving of the driving member 152.

[0058] Optionally, the first transmission member 151 can be used to drive the first cover plate 13 to rotate relative to the opening end surface of the first smoke suction port 112 when the driving member 152 drives the movement, so as to close or open the first smoke suction port 112. That is, the first cover plate 13 realizes the opening and closing of the first smoke suction port 112 by turning over, and compared with the scheme of realizing the opening and closing of the first smoke suction port 112 by translating the first cover plate 13 along the direction perpendicular to the opening middle axis of the first smoke suction port 112, the scheme can realize the miniaturization design of the range hood 1. For example, the inner plate surface of the first cover plate 13 has a second edge line 132 away from the cooktop plane p, and the first cover plate 13 can rotate about the second edge line 132 as the rotation axis to realize the opening and closing of the first smoke suction port 112.

[0059] Optionally, the first transmission member 151 can be substantially a six-bar linkage mechanism to drive the rotation of the first cover plate 13. Specifically, please refer to Figure 10, the range hood 1 can include a first structure portion 161 and a second structure portion 162 mounted in the first housing 11 and spaced apart. The first transmission member 151 can include a first connecting rod 1511 having a first connecting portion 1531 and a second connecting portion 1532 spaced apart, a second connecting rod 1512, a third connecting rod 1513, a fourth connecting rod 1514, and a fifth connecting rod 1515. One end of the second connecting rod 1512 is rotationally connected to the first connecting portion 1531 of the first connecting rod 1511, and the other end is rotationally connected to one end of the third connecting rod 1513, and the other end of the third connecting rod 1513 is rotationally connected to the first structure portion 161. One end of the fourth connecting rod 1514 is rotationally connected to the second connecting portion 1532 of the first connecting rod 1511, and the other end is rotationally connected to one end of the fifth connecting rod 1515, and the other end of the fifth connecting rod 1515 is rotationally connected to the second structure portion 162. The middle portion of the fifth connecting rod 1515 is also rotationally connected to the middle portion of the second connecting rod 1512.

[0060] The first connecting rod 1511 is connected to the first cover plate 13, and the third connecting rod 1513 is connected to the first structure portion 161 at the driving member 152 or the fifth connecting rod 1515 is connected to the second structure portion 162 at the driving member 152, so that under the driving of the driving member 152, the first cover plate 13 switches between the first position and the second position.

[0061] If the third connecting rod 1513 is connected to the first structure portion 161 at the driving member 152, when the first cover plate 13 switches from the first position to the second position, under the driving of the driving member 152, the third connecting rod 1513 not only drives the second connecting rod 1512 to move away from one end of the third connecting rod 1513 to the outside of the first smoke inlet 114, but also drives the fourth connecting rod 1514 to move away from one end of the fifth connecting rod 1515 to the outside of the first smoke inlet 114. That is, when the first cover plate 13 switches from the first position to the second position, under the driving of the driving member 152, the first connecting portion 1531 and the second connecting portion 1532 of the first connecting rod 1511 connected to the first cover plate 13 will move towards the outside of the first smoke inlet 114, so that the first cover plate 13 can not be easily hindered by the first housing 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 114, the first cover plate 13 can be smoothly opened, and the structural compactness of the range hood 1 can be improved.

[0062] The first connecting rod 1511 connected with the first cover plate 13 can be that the first connecting rod 1511 is attached to the first cover plate 13 and connected by screws or the like. The third connecting rod 1513 connected with the first structure part 161 or the fifth connecting rod 1515 connected with the second structure part 162 can be fixedly connected with the output shaft of the driving member 152, so as to be able to rotate under the driving of the output shaft of the driving member 152. In the embodiment of the present application, the third connecting rod 1513 connected with the first structure part 161 is fixedly connected with the output shaft of the driving member 152.

[0063] Optionally, the fifth connecting rod 1515 has a first surface 15151 facing the second connecting rod 1512, and the second connecting rod 1512 and the fourth connecting rod 1514 can be located on one side of the first surface 15151 of the fifth connecting rod 1515. Optionally, the second connecting rod 1512 has a second surface (not shown in the figure) facing the fifth connecting rod 1515, and the fifth connecting rod 1515 and the third connecting rod 1513 can be located on one side of the second surface of the second connecting rod 1512. So that the second connecting rod 1512, the third connecting rod 1513, the fourth connecting rod 1514 and the fifth connecting rod 1515 are relatively compact in the direction perpendicular to the first surface 15151, which is beneficial to the miniaturization of the first transmission member 151.

[0064] Optionally, in combination with Figure 10 and Figure 11 , the first transmission member 151 can further include a baffle 1516, which can be located on the side of the second surface of the second connecting rod 1512 and connected with the first connecting rod 1511. By arranging the fifth connecting rod 1515 and the baffle 1516 on one side, when assembling the range hood 1, the side where the baffle 1516 and the fifth connecting rod 1515 are located can be arranged towards the outside of the range hood 1, so that the second connecting rod 1512 and the fourth connecting rod 1514 are located on the inside and can be shielded by the baffle 1516, and the structure is more beautiful.

[0065] Optionally, the thickness of the fifth connecting rod 1515 and the thickness of the baffle 1516 can be substantially equal. The thickness of the second connecting rod 1512 and the thickness of the fourth connecting rod 1514 can be substantially equal, so that the thickness of the first transmission member 151 is relatively thin and the structure is relatively neat and compact. The thickness of the fifth connecting rod 1515 can be the thickness dimension in the direction perpendicular to the first surface 15151, and the thickness of the baffle 1516, the thickness of the second connecting rod 1512, the thickness of the third connecting rod 1513 and the thickness of the fourth connecting rod 1514 can be the thickness dimensions in the direction perpendicular to the first surface 15151, respectively.

[0066] Further optionally, the baffle 1516 can be provided with a first opening 15161, and one end of the fifth connecting rod 1515 extending to the first opening 15161 is rotationally connected to the fourth connecting rod 1514. By extending the fifth connecting rod 1515 to the first opening 15161 of the baffle 1516, the gap between the baffle 1516 and the fifth connecting rod 1515 when the first cover plate 13 is opened can be reduced, the hand pinching phenomenon can be avoided, the safety of the range hood 1 can be improved, and the range hood 1 also has a certain aesthetic property.

[0067] Optionally, the first connecting portion 1531 and the second connecting portion 1532 can be only part of the structure of the first connecting rod 1511. Specifically, part of the structure of the first connecting rod 1511 can be defined as the first connecting portion 1531, and part of the structure can be defined as the second connecting portion 1532, without the need to additionally provide the first connecting portion 1531 and the second connecting portion 1532, so as to simplify the structure of the range hood 1. Of course, the first connecting portion 1531 and / or the second connecting portion 1532 can also be structures different from the first connecting rod 1511, and the embodiments of the present application do not limit this.

[0068] Optionally, the first structure portion 161 and the second structure portion 162 can be directly mounted on the first shell 11 to achieve fixation in the first shell 11. At least one of the first structure portion 161 and the second structure portion 162 can also be mounted on the mounting bracket 16 in the first shell 11, and the driving member 152 can also be mounted on the mounting bracket 16.

[0069] Optionally, the first structure portion 161 and the second structure portion 162 can be only 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 portion 161, and part of the structure can be defined as the second structure portion 162, without the need to additionally provide 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 can also be structures different from the mounting bracket 16, and the embodiments of the present application do not limit this.

[0070] Optionally, the mounting bracket 16 can be provided with a limiting structure 163, 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.

[0071] 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 third connecting rod 1513 and / or the fifth connecting rod 1515. Optionally, a clamping protrusion can be arranged on the third connecting rod 1513 and / or the fifth connecting rod 1515. When the clamping protrusion moves to abut against the limiting structure 163, it indicates that the first cover plate 13 moves to the second position. In the embodiment of the present application, the limiting structure 163 is arranged corresponding to the third connecting rod 1513, and the third connecting rod 1513 is provided with a clamping protrusion 15131. When the clamping protrusion 15131 moves to abut against the limiting structure 163, it indicates that the first cover plate 13 moves to the second position.

[0072] Optionally, in the edge of the inner plate surface of the first cover plate 13, when the part of the edge close to the cooktop plane p contacts the opening end surface of the first smoke suction port 114, it indicates that the first cover plate 13 moves to the first position.

[0073] Optionally, the mounting frame 16 can include a mounting plate 164 and a support 165. The mounting plate 164 is arranged corresponding to the first smoke suction port 112. The mounting plate 164 can be substantially in the form of a plate structure parallel to the opening central axis of the first smoke suction port 112. The driving member 152, the first structure 161 and the second structure 162 are arranged on the plate surface of the mounting plate 164.

[0074] Further optionally, the mounting plate 164 can have a first plate surface 1641 and a second plate surface 1642 distributed in opposite directions. The first structure 161, the second structure 162 and the first transmission member 151 can be located on the side of the first plate surface 1641 of the mounting plate 164. The driving member 152 and the support 165 can be located on the side of the second plate surface 1642 of the mounting plate 164.

[0075] The support 165 can include a first part 1651 arranged corresponding to the first smoke suction port 112, and a second part 1652 connected to the first part 1651. The first part 1651 is connected to the mounting plate 164. The second part 1652 close to the first plate body 114 can be substantially bent to form a bent part 1653 in a direction away from the second plate surface 1642 to the first plate surface 1641. At this time, the bent part 1653 can be connected to the first plate body 114.

[0076] Optionally, the driving member 152 can include a motor 1521, and an output shaft of the driving member 152 can correspond to an output shaft of the motor 1521. The motor 1521 has a first state and a second state. In the first state, the motor 1521 drives the first transmission member 151 to move so that the first cover plate 13 is located at the first position. In the second state, the motor 1521 drives the first transmission member 151 to move so that the first cover plate 13 is located at the second position. When the motor 1521 is switched from the first state to the second state, a rotation stroke of the output shaft of the motor 1521 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 1521 will affect the rotation stroke of the first cover plate 13 when the first cover plate 13 is switched from the first position to the second position, that is, affect the opening degree of the first smoking port 112 by the first cover plate 13. Reasonable limitation of the rotation stroke of the output shaft of the motor 1521 can ensure good smoking effect at the first smoking port 112 on the premise of reducing the power consumption of the motor 1521.

[0077] Optionally, when the first cover plate 13 is switched from the first position to the second position, a rotation stroke of the first cover plate 13 around the second edge line 132 can be greater than or equal to 65° and less than or equal to 75°.

[0078] Optionally, referring again to Figure 9 , the number of the first transmission members 151 can be two. The inner plate surface of the first cover plate 13 has a first edge 133 and a second edge 134 distributed oppositely. The two first transmission members 151 are respectively located on one side of the first edge 133 of the first cover plate 13 and one side of the second edge 134 of the first cover plate 13.

[0079] The driving member 152 can be provided corresponding to and connected with one of the first transmission members 151, and the two first transmission members 151 are drivingly connected through a transmission rod 154. By providing the first transmission member 151 on both sides of the first cover plate 13, the stability of the first cover plate 13 during movement can be improved.

[0080] The two ends of the transmission rod 154 can be respectively installed on the two first transmission members 151 to realize synchronous movement of the two first transmission members 151. The two first transmission members 151 are the same in structure and can be arranged substantially in mirror image. Optionally, when the number of the first transmission members 151 is two, the number of the mounting frames 16 can also be two, and each mounting frame 16 corresponds to one first transmission member 151.

[0081] The transmission rod 154 is located in the first inner cavity 111. Optionally, the transmission rod 154 can be arranged corresponding to the first cover plate 13. Optionally, the transmission rod 154 can be located on the side of the fan assembly 12 close to the first cover plate 13, or on the side of the fan assembly 12 away from the first cover plate 13. The design form of the transmission rod 154 has diversity, which can be flexibly adjusted according to specific needs.

[0082] It should be noted that the second smoke suction port 142 can not only be opened to suck in oil fume during cooking, but also be opened to purify indoor air when not cooking. Of course, a ventilation port (not shown in the figure) can also be additionally arranged on the first shell 11 to purify indoor air, and the present application embodiment does not make any limitation thereon. Optionally, when the ventilation port is arranged on the first shell 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 should be less than or equal to 10% of the total ventilation area of other ventilation under the normal operation state of the entire range hood 1. The total ventilation area of other ventilation under the normal operation 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 142. The ventilation port can include a plurality of small holes arranged at intervals to improve the safety performance of the range hood 1.

[0083] Please refer again to Figures 1-8 In an exemplary scheme, the front plate 122 of the fan assembly 12 is arranged close to the first plate body 114 of the first shell 11. In this way, the oil fume can be timely introduced into the air inlet 121 of the fan assembly 12 after entering the first inner cavity 111 through the first smoke suction port 112 on the first plate body 114 and entering the second inner cavity through the second smoke suction port 142, 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.

[0084] Optionally, in Figures 1-8 In a scheme shown in the figure, the projection area of the second shell 14 in the second plane a is a third area 148, and the side line of the third area 148 close to the cooktop plane p is located on the side of the first area 1211 away from the cooktop plane p. The side line of the third area 148 close to the cooktop plane p can be the lower side line of the third area 148. In this way, the air inlet 121 can be ensured to have sufficient direct exposure area, so as to prevent additional noise and air performance deterioration caused by excessive shielding area of the fan assembly 12. Further optionally, the side line of the third area 148 close to the cooktop plane p can be located on the side of the volute of the fan assembly 12 away from the cooktop plane p.

[0085] Optionally, in Figures 1-8In one of the shown solutions, 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 back plate 123 and the third plate body 115 is greater than or equal to 15 mm and less than or equal to 40 mm.

[0086] In another exemplary solution, the front plate 122 on the fan assembly 12 is arranged close to the third plate body 115 of the first housing 11. This solution 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. Optionally, the projection area of the second housing 14 in the second plane a is the third area 148, the third area 148 is located on a side line of the cooktop plane p away from the first straight line in the first area 1211; in the direction perpendicular to the cooktop plane p, the distance between the first straight line and the side line of the first area 1211 away from the cooktop plane p is 20 mm. Optionally, the distance between the back 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 distance between the front plate 122 and the third plate body 115 is greater than or equal to 10 mm and less than or equal to 30 mm.

[0087] 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 hood comprises: a first housing formed with a first inner cavity and a first smoke inlet communicating with the first inner cavity, the first housing comprising a first plate body, the first plate body being provided with the first smoke inlet; a second housing, the second housing being located on a side of the first plate body away from a cooking platform plane and protruding from the first plate body in use, the second housing being formed with a second inner cavity communicating with the first inner cavity and a second smoke inlet communicating with the second inner cavity, the second housing comprising a second plate body facing the cooking platform plane in use, the second plate body being provided with the second smoke inlet; and a first cover plate having a first position and a second position, the first cover plate closing the first smoke inlet in the first position, the first cover plate opening the first smoke inlet and being located on a side of the second plate body away from the first plate body in the second position, and a smoke collection cavity being formed between the first cover plate, the first plate body and the second plate body in the second position, the smoke collection cavity communicating with the first smoke inlet and the second smoke inlet. In the second position, a distance between a first edge line of the first cover plate close to the cooking platform plane and a first plane is greater than a distance between a second edge line of the first cover plate away from the cooking platform plane and the first plane in use, the first plane being perpendicular to a central axis of an opening of the first smoke inlet and being located on a side of the first cover plate close to the first smoke inlet.

2. The range hood of claim 1, wherein An included angle between the second plate body and the cooking platform plane in use is greater than or equal to 3°, and a third edge line of the second plate body close to the first plate body is located between a fourth edge line of the second plate body away from the first plate body and the cooking platform plane.

3. The range hood according to claim 1, wherein The first housing comprises a third plate body opposite to the first plate body, 4. The range hood according to claim 1, wherein a maximum distance between the second housing and the third plate body in a direction perpendicular to the third plate body is less than or equal to 450 mm; and / or, a maximum distance between the first cover plate and the third plate body in the second position in the direction perpendicular to the third plate body is greater than or equal to 350 mm. The range hood further comprises:

5. The range hood according to claim 1, wherein a fan assembly located in the first inner cavity, the fan assembly having an air inlet, a projection of an outline of the air inlet on a second plane forming a first area, a projection of the first smoke inlet on the second plane forming a second area, and more than 80% of the first area being located in the second area in the second position, the second plane being perpendicular to a rotation axis of the fan assembly. The range hood comprises a first working mode and a second working mode, the first smoke inlet being closed and the second smoke inlet being opened in the first working mode, and the first smoke inlet being opened and the second smoke inlet being opened in the second working mode.

6. The range hood according to claim 1, wherein The range hood further comprises:

7. The range hood according to claim 1, wherein a fan assembly located in the first inner cavity, the fan assembly comprising a front plate facing the first plate body, the front plate being provided with the air inlet. The fan assembly further comprises a rear plate opposite to the front plate, and the first housing further comprises a third plate body opposite to the first plate body.

8. The range hood of claim 7, wherein, ​ The distance between the front plate and the first plate body is greater than or equal to 10 mm and less than or equal to 50 mm; and / or, the distance between the back plate and the third plate body is greater than or equal to 15 mm and less than or equal to 40 mm.

9. The range hood according to claim 1, wherein The range hood further comprises a fan assembly located in the first inner cavity, the housing further comprises a third plate body disposed opposite to the first plate body, the first plate body and the third plate body are distributed on opposite sides of the fan assembly along the direction of the rotation axis of the fan assembly, and the range hood further comprises: At least one first flow guide plate located in the first inner cavity, the first flow guide plate is located on one side of the fan assembly along a first direction, the first direction is perpendicular to the rotation axis and parallel to the cooktop plane, one end of the first flow guide plate is connected to an edge of the first plate body on the side of the fan assembly along the first direction, and the other end of the first flow guide plate extends towards the third plate body; and the distance between the first flow guide plate and the rotation axis gradually decreases in the direction from the first plate body to the third plate body.

10. The range hood according to claim 1, wherein The range hood further comprises a fan assembly located in the first inner cavity, the fan assembly has a rotation axis, the first housing has a central axis parallel to the rotation axis, The distance between the rotation axis and the central axis is less than or equal to 100 mm; and / or, the range hood further comprises a check valve, the check valve has a connecting plate connected to the first housing, the connecting plate has a fifth edge line and a sixth edge line distributed opposite to each other along a first direction, the first direction is perpendicular to the rotation axis and parallel to the cooktop plane, the distance between the fifth edge line and the central axis is less than or equal to 250 mm, and the distance between the sixth edge line and the central axis is less than or equal to 250 mm.

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