Linkage mechanism of oil filter screen and smoke barrier

Abstract

An oil filter screen and smoke barrier linkage mechanism comprises a smoke inlet cavity, a smoke barrier and an oil filter screen arranged on the rear side of the smoke barrier, a smoke inlet is formed in the front side of the smoke inlet cavity, the smoke barrier is arranged at the smoke inlet, the smoke barrier is vertically arranged, the oil filter screen is obliquely arranged downwards from front to back and rotationally connected with the smoke barrier, and the oil filter screen and smoke barrier linkage mechanism further comprises a connecting rod assembly and a driving part. The driving piece drives the smoke barrier to do translational motion through the connecting rod assembly so as to open and close the smoke inlet, and the oil filter screen can rotate relative to the smoke barrier along with the translational motion of the smoke barrier. According to the oil filter screen and smoke barrier linkage mechanism, the driving piece drives the smoke barrier to do translational motion through the connecting rod assembly so as to open and close the smoke inlet, the oil filter screen can rotate relative to the smoke barrier along with the translational motion of the smoke barrier, linkage of the oil filter screen and the smoke barrier is achieved, the inclination angle of the oil filter screen can be adjusted, and when the range hood does not work, the oil filter screen can rotate relative to the smoke barrier. And the inclination angle of the oil filter screen is larger, so that residual oil stains on the oil filter screen are easier to fall off.

Description

Technical Field

[0001] The utility model relates to an oil fume purification device, in particular to a linkage mechanism of an oil filter net and a smoke baffle. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families. Range hoods work based on the principle of fluid dynamics. A centrifugal fan installed inside the range hood absorbs and exhausts oil smoke, and uses a filter to filter out some grease particles. The centrifugal fan includes a volute, an impeller installed in the volute, and a motor that drives the impeller to rotate. When the impeller rotates, negative pressure suction is generated at the center of the fan, sucking the oil smoke under the range hood into the fan. After being accelerated by the fan, it is collected by the volute and guided to be discharged outdoors.

[0003] At present, various low-suction range hoods have been disclosed in the prior art, such as the "A Range Hood" disclosed in the Chinese utility model patent with patent number 202020066610.2 (authorization announcement number CN 21822584 U), in which the lower part of the shell of the range hood has a vertically extending smoke inlet chamber, and a smoke inlet connected to the smoke inlet chamber is opened on the front side wall of the lower part of the shell, and a smoke baffle extending forward horizontally or obliquely is arranged along the upper edge of the smoke inlet. Its smoke inlet is horizontally advanced, and there is an upwardly inclined guide plate inside. The oil in the channel can drip on the guide plate and then flow into the oil cup. However, the smoke inlet of this ultra-thin range hood is generally too close to the wall, and the negative pressure area is small and it is easy to leak smoke; at the same time, there is no oil filter to filter the oil smoke. Long-term use will cause oil to accumulate inside the volute and on the impeller, which is easy to destroy the dynamic balance of the impeller itself, thereby producing abnormal noise. Another example is the Chinese utility model patent with patent number 202122778232.8 (authorization announcement number CN 216557281 U), which discloses a range hood. The range hood is provided with a smoke baffle on the front side wall, and a first air inlet is opened on the front side wall. The smoke baffle can flip to open and close the first air inlet. A second air inlet is opened on the rear side wall. A filtering device is installed on the second air inlet. The filtering device includes a first filter screen and a second filter screen. The first filter screen and the second filter screen are fixed installation structures. When the smoke baffle is flipped, the filter screen cannot be flipped synchronously. The range hood receives oil stains through the filter screen, and the oil stains on the filter screen flow down by relying on the slope of the filter screen itself. The inclination angle of the filter screen is small, and the resistance overcome by the oil stains when falling is large, and it is not easy to fall off the filter screen. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a linkage mechanism between an oil filter and a smoke shield, wherein the inclination angle of the oil filter can be adjusted synchronously with the movement of the smoke shield during the power on and off process in response to the above-mentioned existing technical status.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: an oil filter and smoke baffle linkage mechanism, including a smoke inlet chamber, a smoke baffle and an oil filter arranged on the rear side of the smoke baffle, a smoke inlet port is opened on the front side of the smoke inlet chamber, the smoke baffle plate is arranged at the smoke inlet port, and is characterized in that: the smoke baffle plate is vertically arranged, the oil filter is inclined downward from front to back and is rotatably connected to the smoke baffle plate, and also includes a connecting rod assembly and a driving member, the driving member drives the smoke baffle plate to perform translational motion through the connecting rod assembly to open and close the smoke inlet, and the oil filter can rotate relative to the smoke baffle plate with the translational motion of the smoke baffle plate.

[0006] Preferably, a fixing seat is installed inside the smoke inlet chamber, the driving member is installed on the fixing seat, and the connecting rod assembly is installed on the fixing seat, the smoke baffle and the oil filter.

[0007] Preferably, under the drive of the driving member, the smoke baffle moves forward and downward to open the smoke inlet, and moves backward and upward to close the smoke inlet. With this arrangement, when the machine is turned on, the negative pressure area expands outward and moves downward, the airflow at the smoke inlet is larger, and the smoke absorbing effect is better.

[0008] The connecting rod assembly can have a variety of structures, and the connecting rod assembly includes a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod and the third connecting rod are both inclined upward from the inside to the outside and parallel to each other, and the first connecting rod is arranged at the front side of the third connecting rod, the front end of the second connecting rod and the upper end of the first connecting rod are connected to the first rotation point, the rear end of the second connecting rod and the upper end of the third connecting rod are connected to the second rotation point, the lower end of the first connecting rod is connected to the third rotation point of the fixed seat, and the lower part of the third connecting rod is connected to the fourth 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 left and right sides of the oil filter net are fixed on the first connecting rod on the corresponding side, the first rotation point is arranged on the back of the smoke baffle, the third connecting rod extends backward and downward from the fourth rotation point to form the power input end, and the driving member acts on the power input end. Thus, the connecting rod assembly constitutes a four-bar linkage, and the driving member drives the smoke baffle to translate smoothly while realizing the synchronous flipping of the oil filter net.

[0009] Further preferably, the second connecting rod is arranged horizontally.

[0010] 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.

[0011] 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 the outside 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 inside 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.

[0012] In order to facilitate the oil on the oil filter to slide off, the oil filter is tilted at an angle of 5° to 15° relative to the vertical plane, and the tilt angle of the oil filter when the smoke inlet is closed is greater than that when the smoke inlet is open. With this arrangement, when the range hood is working, the oil filter tilts inwards to receive the oil dripping from above, and allows the oil to flow to the oil cup through its own tilt angle. When the range hood is not working, the oil filter shrinks with the smoke baffle, and the tilt angle is larger. The gravity component of the oil of the same weight is greater, which can better overcome the friction force, making it easier for the oil remaining on the oil filter to fall off.

[0013] Further preferably, an oil cup is installed below the oil filter, and a spray device is installed above the oil filter, with the water spray port of the spray device facing the oil filter. In this way, the oil on the oil filter can flow into the oil cup, and the oil filter can also be cleaned by the spray device in the closed state, thereby improving the cleanliness of the oil filter.

[0014] Compared with the existing design, the advantages of the utility model are: the linkage mechanism of the oil filter screen and the smoke shield plate includes a smoke inlet chamber, a smoke shield plate, an oil filter screen, a connecting rod assembly and a driving member; the smoke shield plate is vertically arranged, the oil filter screen is inclined downward from front to back and is rotatably connected to the smoke shield plate; the driving member drives the smoke shield plate to perform translational motion through the connecting rod assembly to open and close the smoke inlet; the oil filter screen can rotate relative to the smoke shield plate with the translational motion of the smoke shield plate, thereby realizing the linkage between the oil filter screen and the smoke shield plate, so that the inclination angle of the oil filter screen can be adjusted; when the range hood is not working, the inclination angle of the oil filter screen is larger, so that the oil stains remaining on the oil filter screen are easier to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model when the smoke inlet is open;

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

[0017] Figure 3 for Figure 1 a cross-sectional view of the structure shown;

[0018] Figure 4 for Figure 2 a cross-sectional view of the structure shown;

[0019] Figure 5 This is a schematic diagram of the structure of an embodiment of the utility model when the smoke baffle is in an open state;

[0020] Figure 6 It is a schematic diagram of the structure of an embodiment of the utility model when the smoke baffle is in a closed state. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 6 As shown, the oil filter and smoke baffle linkage mechanism of this embodiment is applied to a range hood, and includes a smoke inlet chamber 1, a smoke baffle 2, an oil filter 3, a connecting rod assembly 4, a driving member 5 and a fixing seat 6. Figure 3 The direction indicated by the middle arrow A is forward, a smoke inlet 11 is opened on the front side of the smoke inlet chamber 1, a smoke baffle 2 is arranged at the smoke inlet 11 and is arranged vertically, an oil filter 3 is arranged on the rear side of the smoke baffle 2, the oil filter 3 is arranged obliquely downward from front to back and is rotatably connected with the smoke baffle 2, a fixing seat 6 is installed inside the smoke inlet chamber 1, a driving member 5 is installed on the fixing seat 6, and a connecting rod assembly 4 is installed on the fixing seat 6, the smoke baffle 2 and the oil filter 3. The driving member 5 drives the smoke baffle 2 to translate through the connecting rod assembly 4, the smoke baffle 2 translates forward and downward to open the smoke inlet 11, and the smoke baffle 2 translates backward and downward to close the smoke inlet 11. The oil filter 3 can rotate relative to the smoke baffle 2 as the smoke baffle 2 moves in translation. The inclination angle of the oil filter 3 when the smoke inlet 11 is closed is greater than the inclination angle of the oil filter 3 when the smoke inlet 11 is open. In this embodiment, when the smoke inlet 11 is closed, the inclination angle of the oil filter 3 relative to the vertical plane is 5° to 15°, preferably 10°.

[0023] In this embodiment, there are two connecting rod assemblies 4 and they are arranged on the left and right sides of the oil filter 3. Each connecting rod assembly 4 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. 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 inner side of the corresponding side fixing seat 6. Among them, the first connecting rod 41 and the third connecting rod 43 are arranged obliquely upward from the inside to the outside and are parallel to each other, and the second connecting rod 42 is arranged horizontally. The first connecting rod 41 is arranged on the front side of the third connecting rod 43, and the left and right sides of the oil filter 3 are fixed on the first connecting rod 41 on the corresponding side. The front end of the second link 42 is connected to the upper end of the first link 41 at the first rotation point, the first rotation point is arranged at the back of the smoke baffle 2, the rear end of the second link 42 is connected to the upper end of the third link 43 at the second rotation point, the lower end of the first link 41 is connected to the third rotation point of the fixing seat 6, the lower part of the third link 43 is connected to the fourth rotation point of the fixing 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, thus, the first link 41, the second link 42, the third link 43 and the fixing seat 6 form a four-bar mechanism. The third link 43 extends backward and downward from the fourth rotation point to form a power input end. The driving member 5 of this embodiment is a motor, and the driving member 5 is arranged on the outer side of the fixing seat 6. The first end of the fifth link 45 is installed on the output shaft of the motor, the first end of the fourth link 44 is rotatably connected to the second end of the fifth link 45, and the second end of the fourth link 44 is rotatably connected to the lower end of the power input end.

[0024] In addition, in order to collect the oil dripping from the oil filter, an oil cup is installed below the oil filter 3. In order to clean the oil filter, a spray device 7 is installed above the oil filter 3, and the water spray port 71 of the spray device faces downward. The cleaning liquid sprayed from the water spray port 71 can clean the oil filter, and the cleaned sewage flows into the oil cup.

[0025] When the machine is turned on, driven by the motor, the fifth connecting rod 45 drives the fourth connecting rod, the third connecting rod 43, the second connecting rod 42 and the first connecting rod 41 to rotate synchronously in turn, thereby driving the translational movement of the smoke baffle 2 and the flipping movement of the oil filter 3. The smoke baffle 2 and the oil filter 3 are synchronously linked. The smoke baffle 2 is always in a vertical position during the movement, and the inclination angle of the oil filter 3 gradually decreases. The smoke baffle 2 and the oil filter 3 form a smoke collecting area on the front side of the smoke inlet 11, so that the negative pressure area expands outward and moves downward, the airflow at the smoke inlet is larger, and the oil fume absorption effect is better. At this time, the oil filter 3 is tilted inward, which can receive the oil dripping from above, and make the oil flow to the oil cup through its own inclination angle. When shutting down the machine, the motor drives the connecting rod assembly 4 to move, thereby driving the translational movement of the smoke baffle 2 and the flipping movement of the oil filter 3. The smoke baffle 2 and the oil filter 3 are synchronously linked. The smoke baffle 2 is always in a vertical position during the movement, and the inclination angle of the oil filter 3 gradually increases. When the smoke inlet 11 is completely closed, the inclination angle of the oil filter 3 is the largest. With a larger inclination angle, the gravity component of oil stains of the same weight is greater, which can better overcome the friction force, thereby making the oil stains remaining on the oil filter easier to fall off.

[0026] In addition to using a motor, the driving member 5 can also use an electric push rod or other mechanism. When using an electric push rod, the fourth connecting rod and the fifth connecting rod can be omitted, and the power input end of the third connecting rod can be installed on the output end of the electric push rod. The synchronous action of the translation of the above-mentioned smoke baffle 2 and the flipping of the oil filter 3 can also be achieved.

[0027] 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. An oil filter and smoke baffle linkage mechanism, comprising a smoke inlet chamber (1), a smoke baffle (2) and an oil filter (3) arranged at the rear side of the smoke baffle (2), a smoke inlet opening (11) being opened at the front side of the smoke inlet chamber (1), the smoke baffle (2) being arranged at the smoke inlet opening (11), characterized in that: The smoke baffle (2) is arranged vertically, the oil filter net (3) is arranged obliquely downward from front to back and is rotatably connected to the smoke baffle (2), and also includes a connecting rod assembly (4) and a driving member (5). The driving member (5) drives the smoke baffle (2) to perform translational movement through the connecting rod assembly (4) to open and close the smoke inlet (11), and the oil filter net (3) can rotate relative to the smoke baffle (2) as the smoke baffle (2) moves in translation.

2. The oil filter and smoke baffle linkage mechanism according to claim 1, characterized in that: A fixing seat (6) is installed inside the smoke inlet chamber (1), the driving member (5) is installed on the fixing seat (6), and the connecting rod assembly (4) is installed on the fixing seat (6), the smoke baffle (2) and the oil filter (3).

3. The oil filter and smoke baffle linkage mechanism according to claim 2, characterized in that: Driven by the driving member (5), the smoke baffle (2) moves forward and downward to open the smoke inlet (11), and moves backward and upward to close the smoke inlet (11).

4. The oil filter and smoke baffle linkage mechanism according to claim 3, characterized in that: The connecting rod assembly (4) comprises a first connecting rod (41), a second connecting rod (42) and a third connecting rod (43), 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), the front end of the second connecting rod (42) and the upper end of the first connecting rod (41) are connected to a 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 a second rotation point, and the lower end of the first connecting rod (41) is connected to the The third connecting rod (43) is connected to the third rotating point of the fixed seat (6), and the lower part of the third connecting rod (43) is connected to the fourth rotating point of the fixed seat (6). The line connecting the first rotating point and the second rotating point is parallel to the line connecting the third rotating point and the fourth rotating point. The left and right sides of the oil filter (3) are fixed on the first connecting rod (41) on the corresponding side. The first rotating point is set on the back of the smoke baffle (2). The third connecting rod (43) extends from the fourth rotating point to the rear and downward to form a power input end, and the driving member (5) acts on the power input end.

5. The oil filter and smoke baffle linkage mechanism according to claim 4, characterized in that: The second connecting rod (42) is arranged horizontally.

6. The oil filter and smoke baffle linkage mechanism according to claim 4, characterized in that: The driving member (5) 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.

7. The oil filter and smoke baffle linkage mechanism according to claim 4, characterized in that: The driving member (5) is a motor and further includes a fourth connecting rod (44) and a fifth connecting rod (45). The motor is arranged on the outside of the fixing seat (6). 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 inside of the fixing seat (6). The first end of the fifth connecting rod (45) is installed on the output shaft of the motor. The first end of the fourth connecting rod (44) is rotatably connected to the second end of the fifth connecting rod (45). The second end of the fourth connecting rod (44) is rotatably connected to the lower end of the power input end.

8. The oil filter and smoke baffle linkage mechanism according to claim 4, characterized in that: When the smoke inlet (11) is in a closed state, the inclination angle of the oil filter (3) relative to the vertical plane is 5° to 15°, and the inclination angle of the oil filter (3) when the smoke inlet (11) is in a closed state is greater than the inclination angle of the oil filter (3) when the smoke inlet (11) is in an open state.

9. The oil filter and smoke baffle linkage mechanism according to any one of claims 1 to 8, characterized in that: An oil cup is installed below the oil filter (3), and a spray device (7) is installed above the oil filter (3), with a water spray port (71) of the spray device (7) facing the oil filter (3).

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