A range hood

Abstract

The utility model discloses a kind of range hood, comprising: upper box body assembly;Air inlet body, it can be moved relative to upper box body assembly;Smoke baffle, it can be rotated relative to upper box body assembly;And movement mechanism, it includes driving mechanism and connecting rod mechanism, the driving mechanism and air inlet body transmission connection, the connecting rod mechanism includes first connecting rod, second connecting rod, third connecting rod and fourth connecting rod, the third connecting rod is respectively upper box body assembly rotary connection and with smoke baffle fixed;The one end of the first connecting rod is rotatably connected with upper box body assembly, the other end of the first connecting rod is rotatably connected with the one end of second connecting rod, the other end of the second connecting rod is rotatably connected with third connecting rod, the one end of the fourth connecting rod is fixed with second connecting rod, the other end of the fourth connecting rod is directly or indirectly fixed with air inlet body, so that the second connecting rod, fourth connecting rod and air inlet body are connected as a whole.

Description

Technical Field

[0001] This utility model relates to an oil fume purification device, and more particularly to an oil fume extractor. Background Technology

[0002] Chinese cooking produces a lot of oil fumes. To maintain a clean kitchen environment and protect human health, range hoods have become an indispensable appliance in modern family kitchens. As the usage rate of range hoods increases, people are paying more and more attention to their fume extraction efficiency. If the distance between the range hood's air inlet and the area where the fumes are generated is large, the fume extraction path is longer, and the extraction time is increased, making it easier for fumes to escape during cooking. On the other hand, if the installation height of the range hood is lowered and the air inlet is placed as close to the source of the fumes as possible, the negative pressure will expand downwards, which can improve the fume extraction efficiency, but it will result in a smaller cooking space. The cook's head may accidentally hit the fume hood. In addition, a lower installation height will also affect the view and the overall appearance of the kitchen.

[0003] To address this, a lift-type range hood has been invented, where the air intake can rise and fall; it descends when the machine is on and rises when it is off. For example, Chinese Patent Application No. 202510702119.1 discloses a linkage-type range hood that uses a multi-link mechanism to link the air intake and the baffle plate, as well as control the trajectory of the air intake. However, this design has the following problems: too many hinge points in the moving mechanism may increase processing steps and costs; moreover, too many hinge points also increase the risk points during movement, resulting in poor reliability.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a range hood that reduces connection points, reduces processing difficulty, and lowers costs.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a range hood, comprising:

[0007] Upper housing assembly;

[0008] The air intake element can move relative to the upper housing assembly;

[0009] The smoke baffle, which can rotate relative to the upper housing assembly; and

[0010] The motion mechanism includes a drive mechanism and a linkage mechanism. The drive mechanism is connected to the air inlet body. The linkage mechanism includes a first linkage, a second linkage, a third linkage, and a fourth linkage. The third linkage is rotatably connected to the upper housing assembly and fixed to the smoke baffle.

[0011] Its features are:

[0012] One end of the first connecting rod is rotatably connected to the upper housing assembly, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to the third connecting rod, one end of the fourth connecting rod is fixed to the second connecting rod, and the other end of the fourth connecting rod is directly or indirectly fixed to the air inlet, so that the second connecting rod, the fourth connecting rod and the air inlet are connected as a whole.

[0013] Therefore, the opening and closing function of the smoke baffle and the air inlet is realized through a simple four-bar linkage mechanism, which reduces the processing difficulty and manufacturing cost. Moreover, compared with fixing the second link and the air inlet into a single piece, it is more reasonable in terms of processing economy to separate the second link, the fourth link and the air inlet. This avoids the second link and the air inlet forming a large single component, which would have to connect to other links and the third link on the smoke baffle in a limited space, and the shape would be more complicated due to avoidance reasons.

[0014] Furthermore, the drive mechanism is connected to the rear side of the air inlet body, and the front end of the air inlet body is directly or indirectly fixed to the fourth link so that the air inlet body can move to a suitable working position.

[0015] Furthermore, to facilitate driving the air inlet, the driving mechanism is an electric push rod, and the output end of the driving mechanism extends and retracts in the vertical direction and is rotatably connected to the air inlet.

[0016] Preferably, the center of the rotatable connection between the third link and the upper housing assembly is the first rotatable connection point, and the center of the rotatable connection between the second link and the third link is the second rotatable connection point. The second rotatable connection point rotates around the first rotatable connection point along the axis extending in the left and right direction of the range hood, thereby enabling the air intake body to achieve storage when the machine is turned off and wall-mounted movement when it is turned on as much as possible.

[0017] Furthermore, to facilitate the connection between the air inlet body and the upper housing assembly and the linkage mechanism, the linkage mechanism also includes a fifth link, which is fixed to the bottom of the air inlet body and is connected to the upper housing assembly and the fourth link respectively.

[0018] Furthermore, to facilitate the rotatable connection between the third link and the upper housing assembly, the motion mechanism also includes a mounting base and a pin. The mounting base is located on the inner side of the bottom of the upper housing assembly, and the pin passes through the third link, thereby enabling the third link to be rotatably connected to the upper housing assembly.

[0019] Furthermore, the upper housing assembly serves as the frame of the motion mechanism, and the upper housing assembly includes side plates extending forward and backward, with one end of the first connecting rod rotatably connected to the side plate of the upper housing assembly.

[0020] Furthermore, to improve the synchronicity and stability of the two sides when the air intake moves, the linkage mechanism has two sets, which are respectively arranged on the left and right sides of the air intake.

[0021] Furthermore, to reduce the size when the range hood is off while ensuring the fume extraction effect when it is on, the bottom surface of the upper housing assembly is provided with an opening for the air inlet to enter and exit. When the range hood is in the off state, the air inlet is housed inside the upper housing assembly. When the range hood is in the on state, at least part of the air inlet is exposed downwards from the opening onto the upper housing assembly.

[0022] Furthermore, when the range hood is in the closed state, the smoke baffle is closed at the opening; when the range hood is in the open state, a smoke-gathering chamber is formed between the smoke baffle and the air inlet. Thus, when the range hood is turned off, it achieves a completely flat surface, reducing the size and cleaning difficulty, while when the range hood is turned on, it can better gather smoke and improve the smoke extraction effect.

[0023] Compared with the prior art, the advantages of this utility model are as follows: the opening and closing function of the smoke baffle and the air inlet is realized through a simple four-bar linkage mechanism, which reduces the processing difficulty and manufacturing cost. Moreover, compared with fixing the second link and the air inlet into a single integral part, it is more reasonable in terms of processing economy to separate the second link, the fourth link and the air inlet. This avoids the second link and the air inlet forming a large whole component, which would have to connect to other links and the third link on the smoke baffle in a limited space, and the shape would be more complicated due to avoidance reasons. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the range hood in the off state according to an embodiment of the present utility model;

[0025] Figure 2 This is a sectional side view of the range hood in the closed state according to an embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view (section and...) of the range hood in the closed state according to an embodiment of the present invention. Figure 2 parallel);

[0027] Figure 4 This is a schematic diagram of the linkage mechanism and mounting base of the range hood according to an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the linkage mechanism of the range hood according to an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the range hood in the open state according to an embodiment of the present utility model;

[0030] Figure 7 This is a cross-sectional side view of the range hood in the open state according to an embodiment of the present utility model. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0033] See Figures 1 to 7 A range hood includes an upper housing assembly 1, an air inlet 2, and a smoke baffle 3.

[0034] The upper housing assembly 1 includes an outer housing 11 and a fan frame 12 connected to the outer housing 11. The lower end of the fan frame 12 may be partially located inside the outer housing 11, and the fan frame 12 is used to house the fan 4.

[0035] The upper housing assembly 1 can be installed inside the kitchen cabinet. Since the width of the fan frame 12 usually needs to be compatible with the width of the fan, the fan frame 12 does not need to be large. However, the air inlet 2 needs to be larger to accommodate a standard household double burner. For these reasons, the upper housing assembly 1 is divided into an outer housing 11 and a fan frame 12. If the optimization of air intake efficiency is not considered, an integrated upper housing assembly 1 can also be used.

[0036] The air inlet 2 has a smoke inlet 21 formed on its front side, which can move relative to the upper housing assembly 1, thus having a first state and a second state. See also Figure 1and Figure 2 When the air inlet 2 is in the first state, the air inlet 2 is at least partially hidden and housed within the upper housing assembly 1, and is located below the fan. In this embodiment, the air inlet 2 is completely housed within the upper housing assembly 1 at this time; see also Figure 6 and Figure 7 When the air inlet 2 is in the second state, the air inlet 2 is at least partially below the bottom of the upper housing assembly 1 and exposed above the upper housing assembly 1, and the smoke inlet 21 is below the bottom surface of the upper housing assembly 1 and exposed above the upper housing assembly 1. In this embodiment, the front of the air inlet 2 is gradually inclined downward from front to back, and the smoke inlet 21 is almost completely exposed. The "front" of the air inlet 2 mentioned above refers to the side of the air inlet 2 facing the user when it is in the second state.

[0037] Alternatively, the air inlet 2 can also be a plate, which, in the second state, is at least partially located below the upper housing assembly 1, so that the fumes can surround the periphery of the air inlet 2 or rise from the front side of the air inlet 2 and enter the interior of the upper housing assembly 1 through the opening 13 at the bottom of the upper housing assembly 1 as described below.

[0038] The range hood also includes a smoke baffle 3, which is located at the bottom of the upper housing assembly 1. In this embodiment, the bottom surface of the upper housing assembly 1 has an opening 13, and a plate 14 is located in front of the opening 13. The air inlet 2 enters and exits the upper housing assembly 1 through the opening 13. When the range hood is closed, the air inlet 2 can be completely retracted into the upper housing assembly 1, at which time the smoke baffle 3 can close the opening 13. The plate 14 can be used for decoration or as a mounting base for some functional components, such as for installing lighting devices. The smoke baffle 3 can be installed with the upper housing assembly 1 at the plate 14.

[0039] To drive the movement of the air inlet 2 and the smoke baffle 3, the range hood also includes a motion mechanism, which includes a drive mechanism 51 and a linkage mechanism. The drive mechanism 51 is a linear drive module, which can be any existing mechanism capable of outputting linear movement, preferably an electric push rod. It is installed inside the upper housing assembly 1, and its output end can extend and retract vertically. The output end is connected to the air inlet 2 to drive the air inlet 2 to rise and fall. The drive mechanism 51 can be connected to the middle position of the air inlet 2 along the left-right direction of the range hood (the left-right direction is the width direction of the range hood; in the normal installation state, when the user faces the range hood, the width direction is the left-right direction for the user) (allowing for certain errors due to manufacturing and assembly). Preferably, the drive mechanism 51 is rotatably mounted to the upper housing assembly 1, and the output end of the drive mechanism 51 is rotatably connected to the air inlet 2.

[0040] There are two sets of linkage mechanisms, respectively located on the left and right sides of the air inlet body 2 ("left" and "right" refer to the orientation of the user facing the range hood when it is normally installed). Each set of linkage mechanisms includes a first linkage 521, a second linkage 522, a third linkage 523, a fourth linkage 524, and a fifth linkage 525. One end of the first linkage 521 is rotatably connected to the upper housing assembly 1, and the other end is rotatably connected to one end of the second linkage 522. The other end of the second linkage 522 is rotatably connected to the third linkage 523. The third linkage 523 is a crank, one end of which is rotatably connected to the upper housing assembly 1, and the other end is fixed to the smoke baffle 3. The second linkage 522 connects to the portion between the two ends of the third linkage 523. The upper housing assembly 1 serves as the frame of the entire linkage mechanism. One end of the first linkage 521 can be rotatably connected to the side plate 15 of the upper housing assembly 1. The side plate 15 extends along the front-to-back direction of the range hood. The side plate 15 is adapted to the linkage mechanism and there are two of them. It can be an independent component or part of the outer housing 11. The side plate 15 is located on the inner side of the left and right side walls of the outer housing 11.

[0041] The motion mechanism also includes a mounting base 53 disposed on the plate 14. The mounting base 53 is located on the upper surface of the plate 14, and the third link 524 can be rotatably connected to the plate 14 via a pin 531.

[0042] The rotation axes of all the above-mentioned rotating connections extend along the left-right direction of the range hood. Preferably, each of the above-mentioned rotating connections is a hinge.

[0043] The air inlet 2 and the second connecting rod 522 are directly or indirectly fixed, so that they move synchronously. To facilitate the connection between the air inlet 2 and the second connecting rod 522, in this embodiment, the aforementioned fifth connecting rod 525 is provided on the air inlet 2. The fifth connecting rod 525 can be fixed to the bottom inside the air inlet 2, and its front and rear extension depth is approximately the same as the depth of the air inlet 2. One end of the fourth connecting rod 524 is fixed to the portion between the two ends of the second connecting rod 522, and the other end of the fourth connecting rod 524 is fixed to the front end of the fifth connecting rod 525.

[0044] The center of the connection between the third link 523 and the upper housing assembly 1 is denoted as the first rotating connection point A (a rotating connection point refers to any point on the axis of the connecting shaft used for rotating connection, the same below). The first rotating connection point A is located on the central axis of the pin 531. The center of the connection between the second link 522 and the third link 523 is denoted as the second rotating connection point B (the rotation center of the air inlet 2). The smoke baffle 3 rotates around the first rotating connection point A, and the second rotating connection point B rotates around the first rotating connection point A. That is, the air inlet 2 rotates around the first rotating connection point A in a non-fixed axis manner.

[0045] If the second connecting rod 522 and the air inlet 2 are directly fixed or integrally formed into a single part, the entire component will be very large. Moreover, it will be necessary to connect other connecting rods and the third connecting rod on the smoke baffle within a limited space, and the shape will be more complex due to space avoidance and other reasons. Therefore, it is more reasonable from the perspective of processing economy to separate the second connecting rod 522, the fourth connecting rod 524, the fifth connecting rod 525 and the air inlet 2 into several parts, and it can better ensure processing accuracy.

[0046] See Figure 2 and Figure 7 When the range hood is turned on from the off state, the output end of the drive mechanism 51 extends downward, causing the rear end of the air inlet 2 to rotate downward. The first connecting rod 521 rotates clockwise relative to the upper housing assembly 1, pulling the second connecting rod 522 to swing backward and downward, thereby driving the third connecting rod 523 to rotate counterclockwise, which in turn drives the smoke baffle 3 to open. At the same time, due to the movement of the second connecting rod 522, the air inlet 2 fixed to it swings backward and downward, realizing the opening of the air inlet 2.

[0047] Thus, the opening and closing of the smoke baffle 3 in conjunction with the air inlet 2 is achieved through a simple four-bar linkage mechanism (upper housing assembly 1, first link 521, second link 522, and third link 523). This reduces processing difficulty and manufacturing costs.

[0048] The aforementioned air inlet 2, smoke baffle 3, and fan 4 can all be controlled by a voice module. A controller, a voice receiving module, and a voice parsing module can be installed on the range hood. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the corresponding drive mechanisms of the air inlet 2, smoke baffle 3, and fan 4 to perform corresponding operations, thereby realizing intelligent control of the range hood and improving the user experience.

Claims

1. A range hood, comprising: Upper housing assembly (1); The air inlet (2) can move relative to the upper housing assembly (1); The smoke baffle (3) is rotatable relative to the upper housing assembly (1); and The motion mechanism includes a drive mechanism (51) and a linkage mechanism. The drive mechanism (51) is connected to the air inlet (2) in a transmission manner. The linkage mechanism includes a first link (521), a second link (522), a third link (523) and a fourth link (524). The third link (523) is rotatably connected to the upper housing assembly (1) and fixed to the smoke baffle (3). Its features are: One end of the first connecting rod (521) is rotatably connected to the upper housing assembly (1), the other end of the first connecting rod (521) is rotatably connected to one end of the second connecting rod (522), the other end of the second connecting rod (522) is rotatably connected to the third connecting rod (523), one end of the fourth connecting rod (524) is fixed to the second connecting rod (522), and the other end of the fourth connecting rod (524) is directly or indirectly fixed to the air inlet (2), so that the second connecting rod (522), the fourth connecting rod (524) and the air inlet (2) are connected as a whole.

2. The range hood according to claim 1, characterized in that: The drive mechanism (51) is connected to the rear side of the air inlet (2), and the front end of the air inlet (2) is directly or indirectly fixed to the fourth link (524).

3. The range hood according to claim 2, characterized in that: The drive mechanism (51) is an electric push rod. The output end of the drive mechanism (51) extends and retracts in the vertical direction and is rotatably connected to the air inlet (2).

4. The range hood according to claim 3, characterized in that: The center of the rotatable connection between the third link (523) and the upper housing assembly (1) is the first rotatable connection point (A), and the center of the rotatable connection between the second link (522) and the third link (523) is the second rotatable connection point (B). The second rotatable connection point (B) rotates around the first rotatable connection point (A) along the axis extending in the left and right direction of the range hood.

5. The range hood according to claim 2, characterized in that: The linkage mechanism also includes a fifth link (525), which is fixed at the bottom inside the air inlet (2) and is connected to the upper housing assembly (1) and the fourth link (524) respectively.

6. The range hood according to any one of claims 1 to 5, characterized in that: The motion mechanism also includes a mounting base (53) and a pin (531). The mounting base (53) is located on the inner side of the bottom of the upper housing assembly (1), and the pin (531) passes through the third link (523), thereby making the third link (523) rotatably connected to the upper housing assembly (1).

7. The range hood according to any one of claims 1 to 5, characterized in that: The upper housing assembly (1) includes a side plate (15) extending forward and backward, and one end of the first connecting rod (521) is rotatably connected to the side plate (15) of the upper housing assembly (1).

8. The range hood according to any one of claims 1 to 5, characterized in that: The linkage mechanism has two sets, which are respectively located on the left and right sides of the air inlet (2).

9. The range hood according to any one of claims 1 to 5, characterized in that: The bottom surface of the upper housing assembly (1) is provided with an opening (13) for the air inlet (2) to enter and exit. When the range hood is in the closed state, the air inlet (2) is housed in the upper housing assembly (1). When the range hood is in the open state, the air inlet (2) is exposed downward from the opening (13) to the upper housing assembly (1).

10. The range hood according to claim 9, characterized in that: When the range hood is in the closed state, the smoke baffle (3) is closed at the opening (13); when the range hood is in the open state, a smoke collection chamber (Q) is formed between the smoke baffle (3) and the air inlet (2).

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