Range hood

Abstract

The utility model relates to a range hood, which comprises a casing, the smoke barrier assembly comprises a smoke barrier, the smoke barrier can be driven by a smoke barrier movement mechanism to overturn front and back so as to open and close the air inlet, and when the smoke barrier is in a state of opening the air inlet, a gap is formed between the rear side edge of the smoke barrier and the panel; the range hood further comprises a smoke leakage prevention device, the smoke leakage prevention device comprises an auxiliary smoke partition plate arranged on the edge of the rear side of the smoke barrier, the auxiliary smoke partition plate can be driven by a partition plate movement mechanism to deflect relative to the smoke barrier so as to shield the gap, and the partition plate movement mechanism is arranged on the machine shell. In the process that the smoke barrier opens the air inlet, the auxiliary smoke partition plate rotates along with the smoke barrier and is driven by the partition plate movement mechanism to deflect backwards relative to the smoke barrier to be opened. The smoke leakage prevention structure has the advantages of being capable of effectively solving the problem of smoke leakage at the gap of the smoke barrier and simple, stable and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen appliance technical field especially relates to a kind of range hood. BACKGROUND

[0002] Range hood is a kind of kitchen appliance that purifies kitchen environment.The front air inlet of the body of range hood is generally provided with smoke baffle that can be turned open and closed, when the smoke baffle is opened, in order to avoid interference with upper glass panel, a certain gap is left after opening, in the cooking environment of explosive frying or large amount of oil fume, oil fume will escape from the gap between the two, affect the effect of oil fume suction and reduce the cooking experience of user.

[0003] In order to solve the above technical problems, the application number CN202010669372.9 Chinese invention patent application discloses a kind of range hood, including shell, panel and smoke baffle assembly of being set in the front side of shell, smoke baffle assembly further includes anti-smoke running device, anti-smoke running device includes the partition plate of being set on smoke baffle and can be moved relative to smoke baffle to block gap.The partition plate is set on the side of smoke baffle towards shell, and can be driven by second drive mechanism and can move linearly along the extension direction of smoke baffle.Second drive mechanism is linear drive module, commonly used motor and rack gear combination, motor and screw rod combination, motor and worm gear combination, electric push rod and so on can be used.Although the scheme can reduce oil fume leakage to some extent, there are still certain technical defects in actual application: because it depends on linear drive module (such as motor and rack gear, screw rod combination), and is set on the back of smoke baffle, so it needs to reserve enough installation space on the back of smoke baffle, which leads to the increase of the overall thickness of the smoke baffle part, affecting the compactness of product design.On the other hand, the moving parts (such as rack, screw rod) of linear drive mechanism are long-term exposed to oil fume environment, which is easy to cause jam or wear due to oil accumulation, reducing the sensitivity and service life of the partition plate movement.

[0004] There are also existing range hoods that remove the original rotation center of the smoke baffle, increase a rotary hinge between the smoke baffle and the upper glass panel, and make the smoke baffle rotate around the hinge, so as to change the rotation center of the smoke baffle to achieve the problem of removing the gap between the two.This scheme also has certain shortcomings: the addition of rotary hinge between the smoke baffle and the upper glass panel makes the smoke baffle rotate around the hinge, although it changes the rotation center of the smoke baffle to achieve the problem of removing the gap between the two, but due to the change of the rotation center, firstly the height of the smoke baffle will be reduced, leading to the problem of reducing the negative pressure area, affecting the effect of oil fume suction;secondly, the height of the smoke baffle is reduced, the probability of blocking the user's line of sight is increased, affecting the user's operation.

[0005] Therefore, the existing range hood still needs to be further improved. UTILITY MODEL CONTENT

[0006] The utility model wants to solve the technical problem in the prior art, provide a kind of can effectively improve the problem of smoke running at the gap of smoke baffle, and the anti-smoke structure is simple, stable and reliable range hood.

[0007] The utility model adopts the technical scheme that the above technical problems are solved: a range hood, comprising:

[0008] Casing, the front side of the casing is equipped with air inlet, the front side of the casing is equipped with panel in the region corresponding to the air inlet upper side;

[0009] Smoke baffle assembly, including smoke baffle, the smoke baffle can be driven by smoke baffle movement mechanism and be flipped to open and close the air inlet, the rear side edge of the smoke baffle and the panel have gap between in the state that the smoke baffle is opened the air inlet;

[0010] It further includes anti-smoke device, the anti-smoke device includes the auxiliary smoke baffle of being equipped in the rear side edge of the smoke baffle, the auxiliary smoke baffle can be driven by baffle movement mechanism and be deflected to the smoke baffle to cover the gap, the baffle movement mechanism is equipped on the casing, in the process that the smoke baffle is opened the air inlet, the auxiliary smoke baffle is deflected to the smoke baffle backward by baffle movement mechanism and is opened while being rotated with the smoke baffle.

[0011] The "cover" in the "auxiliary smoke baffle covers the gap" described above does not require that the auxiliary smoke baffle completely block or close the above-mentioned gap, only the auxiliary smoke baffle can cover most of the above-mentioned gap area, so that the purpose of effectively improving the problem of smoke running at the gap of smoke baffle can be achieved.

[0012] The auxiliary smoke baffle of anti-smoke device can be deflected to the smoke baffle by baffle movement mechanism to cover the gap, thereby reducing the escape of oil fume from the gap between the smoke baffle and the panel. Among them, the baffle movement mechanism of anti-smoke device is arranged on the casing, and the auxiliary smoke baffle is deflected to the smoke baffle backward by baffle movement mechanism and is opened while being rotated with the smoke baffle, so that the smoke baffle does not need to be set with too many complex movement mechanisms on the back, which ensures the lightweight of the smoke baffle part, on the other hand, also avoids the influence on the service life and stability and reliability of the smoke baffle due to the contact of the back of the smoke baffle with oil fume because of the setting of the baffle movement mechanism.

[0013] Generally, the partition plate driving mechanism can be arranged on the smoke baffle or the machine shell. Preferably, the auxiliary smoke baffle is arranged along the length direction of the smoke baffle and has a first side edge and a second side edge opposite to each other. The first side edge of the auxiliary smoke baffle is rotatably connected to the rear side edge of the smoke baffle. The second side edge of the auxiliary smoke baffle is rotatably connected to the power output end of the partition plate driving mechanism.

[0014] As an improvement, during the closing process of the smoke baffle to the air inlet, the auxiliary smoke baffle is deflected forward relative to the smoke baffle and is driven by the partition plate driving mechanism to be folded while rotating with the smoke baffle. In the state that the smoke baffle closes the air inlet, the auxiliary smoke baffle is deflected and folded relative to the back of the smoke baffle, so that the structure is more compact and the space in the machine shell is avoided from being occupied.

[0015] The "rotatably connected" in the above "the first side edge of the auxiliary smoke baffle is rotatably connected to the rear side edge of the smoke baffle" can be understood as that the first side edge of the auxiliary smoke baffle and the rear side edge of the smoke baffle can rotate around the axis extending left and right, such as the pin shaft rotating connection mode. It can also be understood that the first side edge of the auxiliary smoke baffle can rotate around the axis extending left and right relative to the rear side edge of the smoke baffle while also being able to be twisted, such as the first side edge of the auxiliary smoke baffle being rotatably connected to the rear side edge of the smoke baffle through a flexible member. The flexible member can be connected to the first side edge of the auxiliary smoke baffle and the rear side edge of the smoke baffle by bonding, which effectively prevents the problem that the first side edge of the auxiliary smoke baffle and the rear side edge of the smoke baffle cannot be effectively attached due to the conventional rotating connection mode.

[0016] In order to effectively improve the smoke blocking effect, in the state that the smoke baffle is opened to the air inlet, the first side edge of the auxiliary smoke baffle is attached to the part of the back of the smoke baffle adjacent to the rear side edge, and the second side edge is attached to the panel.

[0017] In order to simplify the structure of the partition plate driving mechanism, the partition plate driving mechanism includes a partition plate driving motor and a first connecting rod assembly. The partition plate driving motor is arranged in the interior of the machine shell. The power input end of the first connecting rod assembly is connected to the power output shaft of the partition plate driving motor and can rotate under the driving of the partition plate driving motor. The power output end of the first connecting rod assembly is rotatably connected to the second side edge of the auxiliary smoke baffle.

[0018] Considering that the main material of the smoke baffle plate is mostly glass, plastic and other materials, it is not suitable to directly set the corresponding rotating connection part, in order to facilitate the rotating connection with the first connecting rod assembly and the smoke baffle plate, the auxiliary smoke baffle plate comprises a smoke baffle plate body and auxiliary connecting rods arranged at the two ends of the length direction of the smoke baffle plate body, the two auxiliary connecting rods are arranged along the width direction of the auxiliary smoke baffle plate, the first ends of the two auxiliary connecting rods are rotatably connected to the rear side edges of the smoke baffle plate through the left and right extending first pin shafts, and the second end of one of the auxiliary connecting rods is rotatably connected to the power output end of the first connecting rod assembly through the left and right extending second pin shaft.

[0019] In order to realize the firm installation of the auxiliary connecting rod and the smoke baffle plate body, installation grooves are respectively arranged on the two auxiliary connecting rods, and the left and right ends of the smoke baffle plate body are inserted into the installation grooves.

[0020] Considering that the main material of the smoke baffle plate is mostly glass, plastic and other materials, it is not suitable to directly set the corresponding rotating connection part, in order to facilitate the rotating connection with the first connecting rod assembly and the smoke baffle plate, the auxiliary smoke baffle plate comprises a smoke baffle plate body and auxiliary connecting rods arranged at the two ends of the length direction of the smoke baffle plate body, the two auxiliary connecting rods are arranged along the width direction of the auxiliary smoke baffle plate, the first ends of the two auxiliary connecting rods are rotatably connected to the rear side edges of the smoke baffle plate through the left and right extending first pin shafts, and the second end of one of the auxiliary connecting rods is rotatably connected to the power output end of the first connecting rod assembly through the left and right extending second pin shafts.

[0021] As an improvement, the first connecting rod assembly comprises a first connecting rod and a second connecting rod, the first end of the first connecting rod is connected to the power output shaft of the smoke baffle plate driving motor and can be driven to rotate by the smoke baffle plate driving motor, the second end of the first connecting rod is rotatably connected to the first end of the second connecting rod, and the second end of the second connecting rod is rotatably connected to the second side edge of the auxiliary smoke baffle plate.

[0022] In order to avoid the interference problem between the second connecting rod and the panel during movement, and to ensure that the second side edge of the auxiliary smoke baffle plate can be as close as possible to the front wall surface of the panel under the driving of the second connecting rod, the second connecting rod is configured as a hook-shaped structure with an opening facing the lower edge of the panel.

[0023] As an improvement, the smoke baffle plate movement mechanism comprises a smoke baffle plate driving motor, a second connecting rod assembly and a rocker, the second connecting rod assembly comprises a third connecting rod and a fourth connecting rod, the rocker has two left and right spaced apart rockers, the left and right sides of the rear side edges of the smoke baffle plate are rotatably connected to the cabinet through the two rockers, the first end of the third connecting rod is connected to the output shaft of the smoke baffle plate driving motor and can be driven to rotate by the smoke baffle plate driving motor, the second end of the third connecting rod is rotatably connected to the first end of the fourth connecting rod, and the second end of the fourth connecting rod is rotatably connected to the rocker.

[0024] As an improvement, the smoke plate movement mechanism comprises a smoke plate driving motor, a second linkage assembly and a rocker, the second linkage assembly comprises a third linkage and a fourth linkage, the rocker has two left and right spaced rockers, the left and right sides of the rear side edge of the smoke baffle are respectively connected with the machine shell through the two rockers, the first end of the third linkage is connected with the output shaft of the smoke plate driving motor and can be driven to rotate by the smoke plate driving motor, the second end of the third linkage is rotatably connected with the first end of the fourth linkage, and the second end of the fourth linkage is rotatably connected with the rocker.

[0025] In order to reduce the number of driving mechanisms and simplify the structure of the smoke baffle mounting portion of the range hood, the smoke plate driving motor and the partition plate driving motor are the same motor.

[0026] Compared with the prior art, the advantages of the utility model are:

[0027] 1. The auxiliary smoke baffle of the anti-smoke running device can be driven by the partition plate movement mechanism to deflect relative to the smoke baffle and thereby block the gap, thereby reducing the escape of oil fume from the gap between the smoke baffle and the panel. The partition plate movement mechanism of the anti-smoke running device is arranged on the machine shell and drives the auxiliary smoke baffle to deflect backward relative to the smoke baffle while rotating with the smoke baffle, so that the smoke baffle does not need to be provided with too many complex movement mechanisms on the back surface, ensuring the lightweight of the smoke baffle portion, and on the other hand, avoiding the influence of the contact of the back surface of the smoke baffle with oil fume on the service life and stable reliability of the smoke baffle.

[0028] 2. The partition plate driving motor of the anti-smoke running device and the smoke plate driving motor of the smoke baffle share the same motor, and in the case that no driving mechanism such as a motor is increased, the opening and closing of the smoke baffle and the auxiliary smoke baffle are driven by the same motor, effectively simplifying the structure without the need for additional expensive and bulky driving devices.

[0029] 3. The arrangement of the auxiliary smoke baffle does not affect the smooth rotation of the smoke baffle and does not change the rotation center of the smoke baffle, improves the oil fume suction effect while not affecting the operation of the user, and improves the cooking experience of the user. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a three-dimensional structure schematic view of the range hood of the utility model embodiment;

[0031] Figure 2 It is a left view of the range hood of the utility model embodiment, the left side plate of the machine shell is omitted, and the smoke baffle is in an open air inlet state;

[0032] Figure 3The utility model discloses a three -dimensional structure schematic diagram of range hood of embodiment of the utility model, has spared the left side board of casing, and the smoke baffle is in the opening air inlet state.

[0033] Figure 4 The utility model discloses a three -dimensional structure schematic diagram of range hood of embodiment of the utility model, has spared the left side board of casing, and the smoke baffle is in the closing air inlet state. DETAILED DESCRIPTION

[0034] The utility model will be described further in detail below in combination with the drawings.

[0035] In the description and claims of the utility model, directional terms such as "front", "back", "up", "down", "left", "right", "side", "top", "bottom" and the like are used to describe various example structural parts and elements of the utility model, but these terms are used herein only for the purpose of convenience of description and are determined based on the example orientation shown in the drawings. Since the disclosed embodiments of the utility model can be arranged in different directions, these directional terms are only for illustration and should not be considered as limitation, for example, "up" and "down" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

[0036] Figures 1-4 A preferred embodiment of the range hood of the utility model is shown.

[0037] Referring to Figure 1 , the range hood comprises a casing 10 and a centrifugal fan arranged in the casing 10, the casing 10 generally comprises a fan frame 101 and a smoke collecting hood 102 arranged at the bottom of the fan frame 101, and the inner cavity of the fan frame 101 is in communication with the inner cavity of the smoke collecting hood 102. An air inlet 100 is formed on the front side wall of the smoke collecting hood 102, and external smoke gas can enter the smoke collecting hood 102 through the air inlet 100. A centrifugal fan (not shown) is arranged in the fan frame 101, and the centrifugal fan generates negative pressure when operating, so that external oil fume can be sucked into the smoke collecting hood 102 through the air inlet 100. An oil screen is further arranged at the air inlet 100 of the smoke collecting hood 102, for filtering oil fume. An oil cup 12 is arranged at the bottom of the smoke collecting hood 102, and the oil cup 12 is a left-right extending strip, for receiving oil stains flowing down from the smoke collecting hood 102. A smoke baffle 2 capable of deflecting forward and backward relative to the smoke collecting hood 102 is further arranged at the front part of the smoke collecting hood 102, specifically, the smoke baffle 2 is connected to the main body of the smoke collecting hood 102 through a smoke baffle movement mechanism, and specifically can deflect forward to open the above-mentioned air inlet 100 and deflect backward to shield and close the above-mentioned air inlet 100.

[0038] Referring to Figure 2The air inlet 100 of the cabinet 10 of the embodiment is provided with a panel 11 made of glass. When the smoke baffle 2 is opened by the smoke baffle movement mechanism to open the air inlet 100, a gap a is formed between the rear side edge 20 of the smoke baffle 2 and the panel 11.

[0039] The smoke baffle movement mechanism includes a smoke baffle driving motor, a second connecting rod assembly, and two left-right symmetrical rocker arms 31. The second connecting rod assembly includes a third connecting rod 32 and a fourth connecting rod 33. The smoke baffle driving motor is fixed to the inside of the cabinet 10 by a fixing frame, and its output shaft is connected to the first end of the third connecting rod 32 so as to drive the third connecting rod 32 to swing. The second end of the third connecting rod 32 is rotatably connected to the first end of the fourth connecting rod 33 by a pin shaft, and the second end of the fourth connecting rod 33 is hingedly connected to the middle part of one of the rocker arms 31. One end of each of the two rocker arms 31 is hingedly connected to the inner side of the upper part of the air inlet 100 of the cabinet 10 (which can be hingedly connected to the fixing frame for fixing the smoke baffle driving motor), and the other end is fixedly connected to the smoke baffle support 21 at the left and right ends of the back of the smoke baffle 2. When the smoke baffle driving motor is started, the rocker arms 31 are driven to swing by the connecting rod assembly, thereby realizing the overturning movement of the smoke baffle 2. The overturning axis of the smoke baffle 2 relative to the cabinet 10 extends in the left-right direction.

[0040] Referring to Figures 2-4 The anti-smoke running device includes an auxiliary smoke baffle 4 and a baffle movement mechanism. The auxiliary smoke baffle 4 is a long strip-shaped plate and is arranged along the rear side edge 20 of the smoke baffle 2. The baffle movement mechanism includes a baffle driving motor 43 (which shares the same motor with the smoke baffle driving motor) and a first connecting rod assembly. The first connecting rod assembly includes a first connecting rod 44 and a second connecting rod 45. The first end of the first connecting rod 44 is fixed to the output shaft of the baffle driving motor 43 and can also reciprocate and deflect under the driving of the baffle driving motor 43. The second end of the first connecting rod 44 is hingedly connected to the first end of the second connecting rod 45, and the second end of the second connecting rod 45 is connected to the second side edge 412 of the auxiliary smoke baffle 4 by a pin shaft. When the smoke baffle 2 is opened, the baffle driving motor 43 (i.e. the smoke baffle driving motor) also drives the first connecting rod 44 to rotate, thereby driving the second connecting rod 45 to push the second side edge 412 of the auxiliary smoke baffle 4 to deflect backward, so that the auxiliary smoke baffle 4 is unfolded and its second side edge 412 is attached to the front wall of the panel 11, covering most of the gap between the smoke baffle 2 and the panel 11, thereby solving the problem of smoke running from the gap in harsh cooking environments such as stir-frying. When the smoke baffle 2 is closed, the baffle driving motor 43 (i.e. the smoke baffle driving motor) is reversed, the auxiliary smoke baffle 4 is deflected forward to fold and is attached to the back of the smoke baffle 2, thereby keeping the structure compact and avoiding occupying space.

[0041] Considering that the deflection stroke of the auxiliary smoke baffle 4 is relatively short, the length of the first connecting rod 44 does not need to be too large, and can be adjusted according to the actual opening angle of the smoke baffle 2 and the fit with the panel 11. At the same time, in order to avoid interference between the second connecting rod 45 and the panel 11 during movement and to ensure that the second side edge 412 of the auxiliary smoke baffle 4 can be as close as possible to the front wall of the panel 11 under the driving of the second connecting rod 45, the second connecting rod 45 of the embodiment is configured as a hook-shaped structure with an opening facing the lower edge of the panel 11.

[0042] Considering that the main body of the smoke baffle 4 is made of glass, plastic or other materials, it is not suitable to directly set a corresponding rotating connection part, in order to facilitate the rotating connection with the first connecting rod assembly and the smoke baffle 2, the auxiliary smoke baffle 4 of the embodiment includes a smoke baffle main body 41 and two auxiliary connecting rods 42 arranged at the two ends of the length direction of the smoke baffle main body 41. The two auxiliary connecting rods 42 extend along the width direction of the auxiliary smoke baffle 4, and the length of the auxiliary connecting rod 42 is basically the same as the width of the smoke baffle main body 41. Two installation grooves 420 are respectively formed on the two auxiliary connecting rods 42, which can accommodate the left and right ends of the smoke baffle main body 41. The installation groove 420 is a strip-shaped groove formed along the length direction of the auxiliary connecting rod 42, which can be a through groove or a closed groove. The two ends of the length direction of the smoke baffle main body 41 are provided with insertion ends 413, and the width of the insertion end 413 is slightly smaller than the width of the smoke baffle main body 41. Thus, the end of the smoke baffle main body 41 is correspondingly formed with a movable gap 4130 on both sides of the insertion end 413. After the insertion end 413 of the smoke baffle main body 41 is inserted into the installation groove 420 of the auxiliary connecting rod 42, a fixed pin 423 can be used to connect the auxiliary connecting rod 42 and the insertion end 413 of the smoke baffle main body 41, thereby achieving firm installation of the auxiliary connecting rod 42 and the smoke baffle main body 41.

[0043] The first end of the two auxiliary connecting rods 42 and the rear side edge 20 of the smoke baffle 2 are rotatably connected by the left and right extending first pin shafts 421, and the second end of one of the two auxiliary connecting rods 42 and the end of the second connecting rod 45 are rotatably connected by the left and right extending second pin shafts 422. Considering that the main body of the smoke baffle 2 is mainly made of glass, in order to facilitate the rotating connection with the auxiliary connecting rod 42, the back of the smoke baffle 2 is provided with two rotating bases 22 arranged at intervals, and the first end of the two auxiliary connecting rods 42 are rotatably connected to the two rotating bases 22 respectively. The rotating base 22 can be installed on the back of the smoke baffle 2 by adhesive bonding.

[0044] The smoke baffle 2, the auxiliary smoke baffle 4, the first connecting rod assembly, the second connecting rod assembly and the rocker 31 of the embodiment are matched to form a multi-connecting rod combined structure driven by the same driving motor, so that the auxiliary smoke baffle 2 moves together with the smoke baffle 2, eliminates the gap when the smoke baffle 2 is opened, and is retracted into the cavity when the smoke baffle 2 is closed, realizes the opening and retraction of the auxiliary smoke baffle 2 without increasing any driving mechanism, and does not affect the appearance and movement of the whole machine.

[0045] The range hood of the embodiment has the following advantages:

[0046] 1. The auxiliary smoke baffle 4 of the anti-smoke running device can be deflected relative to the smoke baffle 2 by the baffle movement mechanism to block the gap, thereby reducing the escape of oil smoke from the gap between the smoke baffle 2 and the panel 11. The baffle movement mechanism of the anti-smoke running device is provided on the cabinet 10 and drives the auxiliary smoke baffle 4 to deflect backward relative to the smoke baffle 2 while rotating with the smoke baffle 2, so that the smoke baffle 2 does not need to be excessively concentrated with complex movement mechanisms, ensuring the lightweight of the smoke baffle 2, and on the other hand, avoiding the influence of the back surface of the smoke baffle 2 contacting the oil smoke due to the setting of the baffle movement mechanism, affecting its service life and stable reliability.

[0047] 2. The baffle driving motor 43 of the anti-smoke running device and the smoke baffle driving motor of the smoke baffle 2 share the same motor, and in the case of not increasing the driving mechanism such as the motor, the opening and closing of the smoke baffle 2 and the auxiliary smoke baffle 4 are driven by the same motor, effectively simplifying the structure without the need for additional expensive and bulky driving devices.

[0048] 3. The setting of the auxiliary smoke baffle 4 does not affect the smooth rotation of the smoke baffle 2, and does not change the rotation center of the smoke baffle 2, which improves the oil smoke suction effect and improves the cooking experience of the user without affecting the user operation.

[0049] On the basis of the above embodiments, other embodiments can be obtained by replacing and improving the related technical features. For example, the partition driving motor 43 and the smoke plate driving motor can be independent driving motors, that is, they do not share the same driving motor. The partition driving motor 43 and the smoke plate driving motor are synchronized and linked through the controller. Among them, the smoke plate movement mechanism is replaced by an electric push rod, a pneumatic cylinder, a magnetic linear motor or a worm gear mechanism. Of course, the partition movement mechanism can also use a linear motion mechanism such as an electric push rod. When an electric push rod is used, one end of the electric push rod is fixed inside the cabinet 10, and the other end is connected to the second side edge 412 of the auxiliary smoke partition plate 4 through a universal joint. When the smoke baffle 2 is opened, the electric push rod is elongated, pushing the auxiliary smoke partition plate 4 to deflect backward to fit the panel 11; when it is closed, the electric push rod is retracted, driving the auxiliary smoke partition plate 4 to fold. For another example, the first side edge 411 of the auxiliary smoke partition plate 4 is bonded to the back side edge 20 of the smoke baffle 2 through a flexible connecting piece, rather than a simple rotary connection mode of rotating around an axis. The flexible connecting piece can be made of high-temperature-resistant silicone and attached to the first side edge 411 of the auxiliary smoke partition plate 4 in a bonded manner. Of course, the auxiliary smoke partition plate 4 can be made of high-temperature-resistant silicone, coated glass or flame-retardant plastic to enhance oil resistance and durability. For another example, the auxiliary smoke partition plate 4 of the present embodiment is not only provided with one (which is basically consistent with the length direction of the smoke baffle 2), but also can adopt a segmented structure. The auxiliary smoke partition plate 4 is composed of multiple independent plate bodies connected by elastic connecting bands (such as high-temperature-resistant silicone pieces). Each plate body is provided with an auxiliary connecting rod 42 at both ends. The first end of the auxiliary connecting rod 42 is connected to the back of the smoke baffle 2 through a rotating base 22, and the second end is hinged to the connecting rod assembly of the partition movement mechanism. When the smoke baffle 2 is opened, the segmented plate bodies form a continuous curved surface under the action of the connecting rod, tightly fit the arc edge of the panel 11, suitable for special-shaped panel 11 structure, and improve the smoke partition adaptability.

Claims

1. A range hood, comprising: a casing (10), a front side of the casing (10) being provided with an air inlet (100), the front side of the casing (10) being provided with a panel (11) corresponding to a region above the air inlet (100); a smoke baffle assembly, comprising a smoke baffle (2), the smoke baffle (2) being able to be flipped up and down by a smoke baffle moving mechanism to open and close the air inlet (100), in a state where the smoke baffle (2) opens the air inlet (100), a gap is formed between a rear side edge (20) of the smoke baffle (2) and the panel (11); characterized in that the range hood further comprises a smoke leakage prevention device, the smoke leakage prevention device comprising an auxiliary smoke baffle (4) arranged at the rear side edge (20) of the smoke baffle (2), the auxiliary smoke baffle (4) being able to be deflected relative to the smoke baffle (2) by a baffle moving mechanism to block the gap, the baffle moving mechanism being arranged on the casing (10), in a process where the smoke baffle (2) opens the air inlet (100), the auxiliary smoke baffle (4) is deflected backward relative to the smoke baffle (2) by the baffle moving mechanism while rotating with the smoke baffle (2) to be opened.

2. The hood according to claim 1, characterized in that: The auxiliary smoke baffle (4) extends along a length direction of the smoke baffle (2) and has a first side edge (411) and a second side edge (412) opposite to each other, the first side edge (411) of the auxiliary smoke baffle (4) is rotatably attached to the rear side edge (20) of the smoke baffle (2), and the second side edge (412) of the auxiliary smoke baffle (4) is rotatably connected to a power output end of the baffle moving mechanism.

3. The hood according to claim 2, characterized in that: In a state where the smoke baffle (2) opens the air inlet (100), the first side edge (411) of the auxiliary smoke baffle (4) abuts against a portion of a back surface of the smoke baffle (2) adjacent to the rear side edge (20), and the second side edge (412) abuts against the panel (11).

4. The hood according to claim 2, characterized in that: In a process where the smoke baffle (2) closes the air inlet (100), the auxiliary smoke baffle (4) is deflected forward relative to the smoke baffle (2) by the baffle moving mechanism while rotating with the smoke baffle (2) to be closed.

5. The hood according to claim 2, characterized in that: The baffle moving mechanism comprises a baffle driving motor (43) and a first linkage assembly, the baffle driving motor is arranged inside the casing (10), a power input end of the first linkage assembly is connected to a power output shaft of the baffle driving motor and is able to rotate under the driving of the baffle driving motor (43), and a power output end of the first linkage assembly is rotatably connected to the second side edge (412) of the auxiliary smoke baffle (4).

6. The hood according to claim 5, characterized in that: The auxiliary smoke baffle (4) comprises a smoke baffle body (41) and auxiliary connecting rods (42) arranged at the two ends of the smoke baffle body (41) in the length direction, the two auxiliary connecting rods (42) are arranged in the width direction of the auxiliary smoke baffle (4), the first ends of the two auxiliary connecting rods (42) are rotatably connected to the rear side edge (20) of the smoke baffle (2) through first left and right extending pin shafts (421), and the second end of one of the auxiliary connecting rods (42) is rotatably connected to the power output end of the first connecting rod assembly through a second left and right extending pin shaft (422).

7. The hood according to claim 6, characterized in that: Two mounting grooves (420) are respectively arranged on the two auxiliary connecting rods (42) and can accommodate the left and right ends of the smoke baffle body (41).

8. The hood according to claim 6, characterized in that: The rear side edge (20) of the back of the smoke baffle (2) is further provided with two rotating bases (22) arranged at intervals, and the first ends of the two auxiliary connecting rods (42) are rotatably connected to the two rotating bases (22).

9. The hood according to claim 5, characterized in that: The first connecting rod assembly comprises a first connecting rod (44) and a second connecting rod (45), the first end of the first connecting rod (44) is connected to the power output shaft of the smoke baffle driving motor (43) and can be driven to rotate by the smoke baffle driving motor (43), the second end of the first connecting rod (44) is rotatably connected to the first end of the second connecting rod (45), and the second end of the second connecting rod (45) is rotatably connected to the second side edge (412) of the auxiliary smoke baffle (4).

10. The hood according to claim 9, characterized in that: The second connecting rod (45) is configured in a curved hook structure with an opening facing the lower edge of the panel (11).

11. The hood according to any one of claims 1-4, characterized in that: The smoke baffle movement mechanism comprises a smoke baffle driving motor, a second connecting rod assembly and a rocker (31), the second connecting rod assembly comprises a third connecting rod (32) and a fourth connecting rod (33), the rocker (31) has two left and right spaced apart rockers, the left and right sides of the rear side edge (20) of the smoke baffle (2) are rotatably connected to the cabinet (10) through the two rockers (31), the first end of the third connecting rod (32) is connected to the output shaft of the smoke baffle driving motor and can be driven to rotate by the smoke baffle driving motor, the second end of the third connecting rod (32) is rotatably connected to the first end of the fourth connecting rod (33), and the second end of the fourth connecting rod (33) is rotatably connected to the rocker (31).

12. The hood according to any one of claims 5-10, characterized in that: The smoke baffle movement mechanism comprises a smoke baffle driving motor, a second connecting rod assembly and a rocker (31), the second connecting rod assembly comprises a third connecting rod (32) and a fourth connecting rod (33), the rocker (31) has two left and right spaced apart rockers, the left and right sides of the rear side edge (20) of the smoke baffle (2) are rotatably connected to the cabinet (10) through the two rockers (31), the first end of the third connecting rod (32) is connected to the output shaft of the smoke baffle driving motor and can be driven to rotate by the smoke baffle driving motor, the second end of the third connecting rod (32) is rotatably connected to the first end of the fourth connecting rod (33), and the second end of the fourth connecting rod (33) is rotatably connected to the rocker (31).

13. The hood according to claim 12, characterized in that: The smoke plate driving motor is the same motor as the partition plate driving motor (43).

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