Range hood smoke barrier movement mechanism

Abstract

A smoke barrier movement mechanism of a range hood comprises a smoke inlet cavity and a smoke barrier, an air inlet is formed in the front side of the smoke inlet cavity, the smoke barrier is arranged at the air inlet, and under driving of a driving mechanism, the smoke barrier can do oblique translational motion relative to the air inlet and can do oblique translational motion forwards and downwards to extend to the front side of the air inlet. The smoke baffle can move to be flush with a front side plate of the smoke inlet cavity so as to close the air inlet, and the smoke baffle can horizontally move towards the upper rear portion so as to be retracted to the rear side of the air inlet. The smoke barrier can move relative to the air inlet according to different working conditions, the smoke barrier moves to be flush with the front side plate of the smoke inlet cavity to close the air inlet during shutdown, and the smoke barrier obliquely translates forwards and downwards to extend to the front side of the air inlet under the working condition of large oil smoke, so that the negative pressure area is ensured to expand outwards and move downwards, the airflow at the air inlet is larger, the oil smoke suction effect is better, and the smoke suction efficiency is improved. And under the working condition of small oil smoke, the smoke baffle translates towards the rear upper part and retracts to the rear side of the air inlet, so that the problem of pot collision caused by too high cookware in the current soup cooking or cooking weak gear state is solved.

Description

Technical Field

[0001] The utility model relates to a range hood, in particular to a smoke baffle movement mechanism of the range hood. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families. In order to improve the fume extraction effect, the current common practice is to increase the area covered by the air inlet. For example, the Chinese utility model patent No. 202020176183.3 (authorization announcement No. CN211600839U) discloses a range hood, which includes a housing provided with a main air inlet, an air suction device installed on the housing, and an oil cup arranged at the bottom of the housing. The housing is also provided with an auxiliary air inlet spaced apart from the main air inlet, and a panel capable of opening and closing the auxiliary air inlet is pivotally connected to the housing, and the auxiliary air inlet includes a plurality of second mesh holes arranged in an array. In order to enable the air inlet to cover a larger area, the above-mentioned range hood has the entire front panel designed to be flippable, forming a thin range hood with a light and thin appearance. However, this type of range hood has the following problems: in order to prevent the panel from blocking the view when the range hood is working, the control panel needs to be flipped to open at a certain angle, but a small flip angle of the panel will result in a smaller smoke collection area of ​​the range hood and a poor smoke extraction effect; and when the flip angle of the panel increases, the distance between the smoke baffle and the person will become smaller, blocking the view and causing a sense of oppression to the user. In order to solve the above problems, as disclosed in the Chinese utility model patent with patent number 202121041391.3 (authorized public number CN 215863590U), the smoke baffle of the range hood opens and closes the air inlet in a translational manner, which can increase the distance between the user and the user in the open state, thereby reducing the risk of blocking the view, and the smoke collection cavity is enlarged, the smoke extraction effect is improved, and the two air inlets cooperate to adapt to different cooking conditions; the smoke baffle remains in a vertical state and translates, perpendicular to the horizontal direction, which can further reduce the risk of blocking the view, further enlarge the smoke collection cavity, and improve the smoke extraction effect. The smoke baffle of the range hood is always located on the outside of the air inlet under different oil fume working conditions and can only perform horizontal translational movement. Under heavy oil fume conditions, although the smoke collection area can be increased by moving the smoke baffle forward, the negative pressure area cannot move downward, and the oil fume extraction effect can be further improved. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a range hood smoke baffle movement mechanism which can drive the smoke baffle to perform oblique translational movement and can move to an adapted position according to different working conditions in response to the above-mentioned existing technical status.

[0004] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a smoke shield movement mechanism for a range hood, comprising a smoke inlet chamber and a smoke shield, an air inlet being opened on the front side of the smoke inlet chamber, and the smoke shield being arranged at the air inlet, and characterized in that: a driving mechanism is arranged in the smoke inlet chamber, and under the drive of the driving mechanism, the smoke shield can make oblique translational movement relative to the air inlet, the smoke shield can obliquely translate forward and downward and extend to the front side of the air inlet, the smoke shield can move to be flush with the front side plate of the smoke inlet chamber to close the air inlet, and the smoke shield can translate backward and upward and be retracted to the rear side of the air inlet.

[0005] Preferably, the smoke baffle is always in a vertical position during the oblique translation movement.

[0006] Preferably, when the smoke shield is extended to the front side of the air inlet, the lower edge of the smoke shield is lower than the lower edge of the air inlet. In this way, the negative pressure area expands outward and moves downward, the airflow at the air inlet is larger, the oil fume absorption effect is better, and it is suitable for heavy oil fume working conditions.

[0007] Preferably, an upper connecting plate is provided on the top of the smoke shield, and when the smoke shield is extended to the front side of the air inlet, the upper connecting plate is connected to the lower edge of the front side plate to close the air inlet gap between the upper edge of the smoke shield and the lower edge of the front side plate. In this way, oil smoke can only enter the air inlet through the bottom of the smoke shield.

[0008] When the smoke shield is retracted to the rear side of the air inlet, there is an upper air inlet gap between the upper edge of the smoke shield and the front side plate, and a lower air inlet gap between the lower edge of the smoke shield and the bottom plate of the smoke inlet chamber. In this way, oil smoke can enter the smoke inlet chamber through the air inlet gaps above and below the smoke shield. At this time, the air inlet gaps are usually small, which is suitable for small oil smoke conditions.

[0009] In order to enable the smoke shield to move to a suitable position under different working conditions, preferably, under a condition with heavy oil smoke, the smoke shield is translated obliquely forward and downward and extended to the front side of the air inlet, and under a condition with light oil smoke, the smoke shield is translated backward and upward and retracted to the rear side of the air inlet.

[0010] The driving mechanism can have a variety of structures. Preferably, the driving mechanism includes a driving member and a connecting rod assembly. The connecting rod assembly is connected between the power output end of the driving member and the smoke shield. Under the drive of the driving member, the smoke shield performs oblique translational movement relative to the air inlet through the connecting rod assembly.

[0011] The cam is connected to the smoke inlet chamber via a first rotation point, the second rotation point being connected to the third rotation point, the second rotation point extending from the first rotation point to the second rotation point, and the lower end of the first rotation point is connected to the third rotation point of the fixed seat. The line connecting the first rotation point and the second rotation point is parallel to the line connecting the third rotation point and the fourth rotation point. The first rotation point is arranged on the back of the smoke shield, and the third rotation point extends rearward and downward from the fourth rotation point to form a power input end, and the driving member acts on the power input end.

[0012] As a driving mode, the driving member is an electric push rod, and the electric push rod acts on the power input end to drive the third connecting rod to rotate relative to the fourth rotation point.

[0013] As another driving mode, the driving member is a motor and also includes a fourth connecting rod and a fifth connecting rod. The motor is arranged on one side of the fixed seat, and the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod and the fifth connecting rod are arranged on the other side of the fixed seat. The first end of the fifth connecting rod is installed on the output shaft of the motor, the first end of the fourth connecting rod is rotatably connected to the second end of the fifth connecting rod, and the second end of the fourth connecting rod is rotatably connected to the lower end of the power input end.

[0014] Compared with the existing design, the advantages of the utility model are: the smoke baffle of the range hood can make oblique translational movement relative to the air inlet under the drive of the driving mechanism, and the smoke baffle can move relative to the air inlet according to different working conditions. When the machine is shut down, the smoke baffle can move to be flush with the front side plate of the smoke inlet chamber to close the air inlet. Under the working condition of heavy oil smoke, the smoke baffle can be obliquely translated forward and downward and extend to the front side of the air inlet, ensuring that the negative pressure area expands outward and moves downward under the working condition of heavy oil smoke, the airflow at the air inlet is larger, and the oil fume extraction effect is better. Under the working condition of light oil smoke, the smoke baffle can be translated backward and upward and retracted to the rear side of the air inlet, which can solve the problem of pot touching caused by the pot being too high when making soup or steaming in a weak gear state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the embodiment of the utility model in the strong gear state;

[0016] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model when the air inlet is closed;

[0017] Figure 3 This is a schematic diagram of the structure of the embodiment of the utility model in a weak gear state;

[0018] Figure 4 for Figure 1 a cross-sectional view of the structure shown;

[0019] Figure 5 for Figure 2 a cross-sectional view of the structure shown;

[0020] Figure 6 for Figure 3 a cross-sectional view of the structure shown;

[0021] Figure 7 It is a schematic diagram of the local structure of an embodiment of the utility model in a weak gear state. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 7 As shown, the smoke shield movement mechanism of the range hood of this embodiment includes a smoke inlet chamber 1 and a smoke shield 2. An air inlet 3 is opened on the front side of the smoke inlet chamber 1. The smoke shield 2 is arranged at the air inlet 3. A driving mechanism 4 is arranged in the smoke inlet chamber 1. The smoke shield 2 can make an oblique translational movement relative to the air inlet 3 when driven by the driving mechanism 4. The smoke shield 2 is always in a vertical position during the oblique translational movement.

[0024] like Figure 1 and Figure 4 As shown, Figure 4 The direction indicated by the middle arrow A is the front side. An upper connecting plate 21 is provided on the top of the smoke shield 2. When the smoke shield 2 is obliquely translated forward and downward and extended to the front side of the air inlet 3, the upper connecting plate 21 is connected to the lower edge of the front side plate 11 to close the air inlet gap between the upper edge of the smoke shield 2 and the lower edge of the front side plate 11. The lower edge of the smoke shield 2 is lower than the lower edge of the air inlet 3. At this time, it is in a strong gear, the negative pressure area expands outward and moves downward, the airflow at the air inlet is larger, and the oil fume absorption effect is better, which is suitable for large oil fume conditions.

[0025] like Figure 3 and Figure 6 As shown, in the low-smoke working condition, the smoke shield 2 is in the weak gear and moves horizontally upward and backward and retracted to the rear side of the air inlet 3. At this time, there is an upper air inlet gap 51 between the upper edge of the smoke shield 2 and the front side plate 11, and there is a lower air inlet gap 52 between the lower edge of the smoke shield 2 and the bottom plate 12 of the smoke inlet chamber 1. This can solve the problem of pot collision caused by the pot being too high in the weak gear state of making soup or steaming.

[0026] like Figure 2 and Figure 5 As shown, when the machine is turned off, the smoke baffle 2 moves to be flush with the front side plate 11 of the smoke inlet chamber 1 to close the air inlet 3, and the overall appearance of the smoke inlet chamber 1 is more concise.

[0027] The driving mechanism 4 of this embodiment includes a driving member and a connecting rod assembly. The connecting rod assembly is connected between the power output end of the driving member and the smoke baffle 2. Under the drive of the driving member, the smoke baffle 2 performs an oblique translational motion relative to the air inlet 3 through the connecting rod assembly.

[0028] like Figures 4 to 7 As shown, a fixing seat 6 is installed inside the smoke inlet chamber 1 , the driving member is a motor 40 installed on one side of the fixing seat 6 , and the connecting rod assembly is arranged on the other side of the fixing seat 6 . The connecting rod assembly includes a first connecting rod 41, a second connecting rod 42, a third connecting rod 43, a fourth connecting rod 44 and a fifth connecting rod 45, wherein the first connecting rod 41 and the third connecting rod 43 are both arranged obliquely upward from the inside to the outside and are parallel to each other, and the first connecting rod 41 is arranged on the front side of the third connecting rod 43, and the second connecting rod 42 is arranged horizontally, the front end of the second connecting rod 42 and the upper end of the first connecting rod 41 are connected to the first rotation point, the rear end of the second connecting rod 42 and the upper end of the third connecting rod 43 are connected to the second rotation point, the lower end of the first connecting rod 41 is connected to the third rotation point of the fixed seat 6, and the lower part of the third connecting rod 43 is connected to the fourth rotation point of the fixed seat 6, and the line connecting the first rotation point and the second rotation point is parallel to the line connecting the third rotation point and the fourth rotation point. Thus, the first connecting rod 41, the second connecting rod 42, the third connecting rod 43 and the fixed seat 6 form a four-bar linkage.

[0029] The first rotation point is arranged at the back of the smoke shield 2, and the third connecting rod 43 extends from the fourth rotation point to the rear and downward to form a power input end. The first end of the fifth connecting rod 45 is mounted on the output shaft of the motor 40, the first end of the fourth connecting rod 44 is rotatably connected to the second end of the fifth connecting rod 45, and the second end of the fourth connecting rod 44 is rotatably connected to the lower end of the power input end.

[0030] In addition to the motor 40, the driving member 5 may also adopt an electric push rod or other mechanism. When the electric push rod is adopted, the fourth connecting rod and the fifth connecting rod may be omitted, and the power input end of the third connecting rod 43 may be installed on the output end of the electric push rod. The electric push rod acts on the power input end to drive the third connecting rod 43 to rotate relative to the fourth rotation point, and the oblique translation movement of the smoke shield 2 can also be realized.

[0031] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A smoke baffle movement mechanism for a range hood, comprising a smoke inlet chamber (1) and a smoke baffle (2), wherein an air inlet (3) is provided at the front side of the smoke inlet chamber (1), and the smoke baffle (2) is arranged at the air inlet (3), characterized in that: A driving mechanism (4) is provided in the smoke inlet chamber (1). When driven by the driving mechanism (4), the smoke baffle (2) can make an oblique translational movement relative to the air inlet (3). The smoke baffle (2) can be obliquely translated forward and downward and extend to the front side of the air inlet (3). The smoke baffle (2) can be moved to be flush with the front side plate (11) of the smoke inlet chamber (1) to close the air inlet (3). The smoke baffle (2) can be translated backward and upward and retracted to the rear side of the air inlet (3).

2. The range hood smoke baffle movement mechanism according to claim 1, characterized in that: The smoke baffle (2) is always in a vertical position during the oblique translation movement.

3. The range hood smoke baffle movement mechanism according to claim 1, characterized in that: When the smoke baffle (2) is extended to the front side of the air inlet (3), the lower edge of the smoke baffle (2) is lower than the lower edge of the air inlet (3).

4. The range hood smoke baffle movement mechanism according to claim 3, characterized in that: An upper connecting plate (21) is provided on the top of the smoke shield (2); when the smoke shield (2) is extended to the front side of the air inlet (3), the upper connecting plate (21) is connected to the lower edge of the front side plate (11) to close the air inlet gap between the upper edge of the smoke shield (2) and the lower edge of the front side plate (11).

5. The range hood smoke baffle movement mechanism according to claim 1, characterized in that: When the smoke shield (2) is retracted to the rear side of the air inlet (3), an upper air inlet gap (51) exists between the upper edge of the smoke shield (2) and the front side plate (11), and a lower air inlet gap (52) exists between the lower edge of the smoke shield (2) and the bottom plate (12) of the smoke inlet chamber (1).

6. The range hood smoke baffle movement mechanism according to claim 1, characterized in that: Under heavy oil smoke conditions, the smoke shield (2) moves obliquely and horizontally forward and downward and extends to the front side of the air inlet (3); under light oil smoke conditions, the smoke shield (2) moves horizontally backward and upward and retracts to the rear side of the air inlet (3).

7. The smoke baffle movement mechanism for a range hood according to any one of claims 1 to 6, characterized in that: The driving mechanism (4) comprises a driving member and a connecting rod assembly, wherein the connecting rod assembly is connected between the power output end of the driving member and the smoke baffle (2), and under the drive of the driving member, the smoke baffle (2) performs an oblique translation movement relative to the air inlet (3) through the connecting rod assembly.

8. The range hood smoke baffle movement mechanism according to claim 7, characterized in that: A fixing seat (6) is installed inside the smoke inlet chamber (1), the driving member is installed on the fixing seat (6), the connecting rod assembly comprises a first connecting rod (41), a second connecting rod (42) and a third connecting rod (43), the first connecting rod (41) and the third connecting rod (43) are both arranged obliquely upward from the inside to the outside and are parallel to each other, and the first connecting rod (41) is arranged on the front side of the third connecting rod (43), the second connecting rod (42) is arranged horizontally, the front end of the second connecting rod (42) is connected to the upper end of the first connecting rod (41) at a first rotation point, and the second connecting rod (42) is arranged on the front side of the third connecting rod (43). The rear end of the first connecting rod (42) and the upper end of the third connecting rod (43) are connected to the second rotation point, the lower end of the first connecting rod (41) is connected to the third rotation point of the fixed seat (6), and the lower part of the third connecting rod (43) is connected to the fourth rotation point of the fixed seat (6). The line connecting the first rotation point and the second rotation point is parallel to the line connecting the third rotation point and the fourth rotation point. The first rotation point is arranged on the back of the smoke shield (2). The third connecting rod (43) extends from the fourth rotation point to the rear and downward to form a power input end, and the driving member acts on the power input end.

9. The range hood smoke baffle movement mechanism according to claim 8, characterized in that: The driving member is an electric push rod, which acts on the power input end to drive the third connecting rod (43) to rotate relative to the fourth rotation point.

10. The range hood smoke baffle movement mechanism according to claim 8, characterized in that: The driving member is a motor (40), and also includes a fourth connecting rod (44) and a fifth connecting rod (45). The motor (40) is arranged on one side of the fixed seat (6), and the first connecting rod (41), the second connecting rod (42), the third connecting rod (43), the fourth connecting rod (44) and the fifth connecting rod (45) are arranged on the other side of the fixed seat (6). The first end of the fifth connecting rod (45) is installed on the output shaft of the motor (40), the first end of the fourth connecting rod (44) is rotatably connected to the second end of the fifth connecting rod (45), and the second end of the fourth connecting rod (44) is rotatably connected to the lower end of the power input end.

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