Oil screen device for range hood and range hood

Abstract

The utility model relates to an oil screen device for a range hood and the range hood, the oil screen device is used for being arranged at an air inlet on a shell of the range hood, and the oil screen device comprises an oil screen body, an oil screen cover and a filter screen, the power output end of the driving device is connected with the oil screen body and drives the oil screen body to adjust the posture, the oil screen body at least has a first state and a second state along with the change of the posture of the oil screen body, and the height of the oil screen body in the first state is different from that of the oil screen body in the second state. The posture of the oil screen body can be adjusted under the driving of the driving device, the heights of the oil screen body are different after the posture of the oil screen body is adjusted, and therefore the oil screen can adapt to cookware with different heights, for example, when the cookware is high, the height of the corresponding oil screen body can be increased, and the interference problem cannot occur.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to an oil net device for range hoods and the range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It can quickly extract the waste from stove combustion and the fumes generated during cooking and discharge them outdoors, improving the kitchen air environment.

[0003] For example, the top suction range hood disclosed in the Chinese invention patent application with application number CN201910770207.X (application publication number CN110454833A) includes a casing, a wind cabinet, a fume hood, an oil net and an oil cup. The wind cabinet is installed in the casing, an impeller is installed inside the wind cabinet, the fume hood is installed at the bottom of the casing, the oil net is installed at the air inlet of the fume hood, the oil cup is installed at the bottom of the oil net, and the wind cabinet is installed in the casing at an angle. The oil net installed under the fume hood is an inverted tower-type oil net. In order to obtain a good fume absorbing effect, the inverted tower-type oil net needs to have a certain depth, increase the smoke intake surface area, and be as close to the stove as possible to reduce fume escape.

[0004] However, since the oil net of the existing range hood, especially the inverted tower type oil net, is fixed relative to the smoke hood and the height is not adjustable, in some special cooking scenarios, the pots used are very high, such as the steamer for steaming buns, there may be interference between the pot and the oil net.

[0005] Therefore, the oil net device of the existing range hood needs to be further improved. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide an oil net device for a range hood with an oil net height that is flexibly adjustable to adapt to pots of different heights, in view of the current status of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a range hood with an oil net that is flexibly adjustable in height to adapt to pots of different heights in view of the current status of the prior art.

[0008] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: an oil net device for a range hood, which is used to be arranged at the air inlet on the casing of the range hood, comprising:

[0009] The oil screen body has air inlet holes distributed thereon;

[0010] Also includes:

[0011] A driving device, whose power output end is connected to the oil net body, drives the oil net body to adjust its posture. The oil net body has at least a first state and a second state as its posture changes. The oil net body in the first state has a different height from that in the second state.

[0012] The posture adjustment of the oil screen body can be achieved by lifting it up and down, but in order to simplify the structure of the driving device, the oil screen body is rotated around a horizontally extending axis and is arranged at the air inlet of the casing, and switches between the above-mentioned first state and second state as its rotation position changes.

[0013] In order to enable the oil net body to change its height through rotation adjustment, the oil net body includes an arc-shaped wall extending in the horizontal direction and having an arc-shaped cross-section, and a first end wall and a second end wall connected to two ports in the length direction of the arc-shaped wall. The first end wall, the second end wall and the arc-shaped wall jointly define an opening opposite to the arc-shaped wall. At least the arc-shaped wall is provided with air inlet holes, and the axis of rotation of the oil net body relative to the casing is arranged adjacent to the opening of the oil net body.

[0014] As an improvement, when the oil net body is in the first state, the opening of the oil net body faces upward, and the air inlet of the casing is exposed outside the oil net body;

[0015] When the oil net body is in the second state, the opening of the oil net body faces downward, and the oil net body is hidden in the casing.

[0016] By adopting the above design, the oil screen body can ensure a large filtering area in both the first state and the second state, without causing a significant impact on the air volume.

[0017] In order to make the oil screen body compatible with the air inlet in both the first state and the second state and avoid the problem of too large a gap between the oil screen body and the air inlet, the cross section of the arc wall is a semicircle.

[0018] In order to rotatably install the oil net body at the air inlet of the casing, the first end wall and the second end wall are respectively provided with a first rotating shaft and a second rotating shaft extending outward, the first rotating shaft and the second rotating shaft extend on the same straight line, and the straight line where the two are located is the axis of rotation of the oil net body relative to the casing, and the oil net body is rotatably connected to the air inlet of the casing through the first rotating shaft and the second rotating shaft.

[0019] In order to ensure the reliability of the rotational installation of the oil screen body, two rotating shaft seats arranged at intervals are provided at the air inlet of the housing, and the first rotating shaft and the second rotating shaft are rotatably arranged on the two rotating shaft seats respectively.

[0020] As an improvement, considering that the stove burners are arranged at intervals on the left and right, in order to adapt to this, the oil net body is extended and arranged in the left and right directions.

[0021] In order to simplify the structure of the driving device, the driving device includes a driving motor and a gear transmission assembly drivingly connected to the output shaft of the driving motor, and the power output end of the gear transmission assembly is connected to the oil net body.

[0022] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a range hood, comprising a casing and an oil net, wherein the casing is provided with an air inlet, the oil net is arranged at the air inlet, and the oil net adopts the above-mentioned oil net device.

[0023] Compared with the prior art, the advantages of the utility model are as follows: the oil net body can be adjusted in posture under the drive of the driving device, and the height of the oil net body is different after the posture adjustment, so it can adapt to pots of different heights. For example, when the height of the pot is high, the height of the corresponding oil net body can be adjusted higher, and there will be no interference problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the range hood according to an embodiment of the utility model (the opening of the oil screen body faces upward);

[0025] Figure 2 This is a front view of a range hood according to an embodiment of the utility model (the opening of the oil screen body faces upward);

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the range hood according to an embodiment of the utility model (the opening of the oil screen body faces downward);

[0027] Figure 4 It is a three-dimensional structural schematic diagram of the driving device and the oil screen body of the range hood according to the embodiment of the utility model. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] 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.

[0030] Figure 1-Figure 4 The oil net device of the range hood and a preferred embodiment of the range hood of the utility model are shown. The range hood includes a casing 10 and a centrifugal fan arranged in the casing 10. The casing 10 generally includes a fan frame 11 and a fume hood 12 arranged at the bottom of the fan frame 11. The inner cavity of the fan frame 11 is connected with the inner cavity of the fume hood 12. An air inlet is provided at the bottom of the fume hood 12, and external smoke can enter the fume hood 12 through the air inlet. The centrifugal fan is arranged in the fan frame 11. When the centrifugal fan is in operation, negative pressure is generated, and external oil smoke can be sucked into the fume hood 12 through the air inlet. An oil net device is also provided at the air inlet of the fume hood 12 for filtering oil smoke.

[0031] The oil net device includes an oil net body 20 and a driving device. The oil net body 20 includes an arc-shaped wall 21 extending in the horizontal direction and having an arc-shaped cross section, and a first end wall 22 and a second end wall 23 connected to two ports in the length direction of the arc-shaped wall 21. Preferably, the cross section of the arc-shaped wall 21 is semicircular, and correspondingly, the first end wall 22 and the second end wall 23 are semicircular. The first end wall 22, the second end wall 23 and the two opposite sides of the arc-shaped wall 21 jointly define an opening 200 opposite to the arc-shaped wall 21. Air inlet holes 210 are distributed on the arc-shaped wall 21 of the oil net body 20.

[0032] The oil net body 20 extends in the left-right direction and is arranged at the air inlet at the bottom of the fume hood 12, wherein the air inlet at the bottom of the fume hood 12 is a rectangular shape adapted to the oil net body 20. A rotating shaft seat 13 is provided on both the left and right sides of the bottom air inlet of the fume hood 12, and a bearing can be provided in the rotating shaft seat 13. A first rotating shaft 221 and a second rotating shaft 231 extending outward are respectively provided on the first end wall 22 and the second end wall 23 of the oil net body 20, and the first rotating shaft 221 and the second rotating shaft 231 extend on the same straight line and are correspondingly inserted into the bearings of the two rotating shaft seats 13. The above-mentioned first rotating shaft 221 and the second rotating shaft 231 are both close to the opening 200 of the oil net body 20, that is, the center line of the arc wall 21 adjacent to the oil net body 20. The straight line where the first rotating shaft 221 and the second rotating shaft 231 are located is the axis of rotation of the oil net body 20 relative to the housing 10.

[0033] The driving device includes a driving motor 31 and a gear transmission assembly 32 connected to the output shaft of the driving motor 31. The driving motor 31 is fixed on the housing 10. The gear transmission assembly 32 includes a first gear 321 and a second gear 322 meshing with each other, and the first gear 321 and the second gear 322 are both rotatably arranged on the housing 10 through gear shafts extending left and right. The output shaft of the driving motor 31 is connected to the gear shaft of the first gear 321, so as to drive the first gear 321 to rotate. The gear shaft of the second gear 322 is connected to the second rotating shaft 231 on the second end wall 23 of the oil net body 20. When the driving motor 31 is in motion, the power can be transmitted to the oil net body 20 through the gear transmission assembly, so as to drive the oil net body 20 to adjust its posture, wherein the oil net body 20 has at least a first state and a second state as its posture changes, and the height of the oil net body 20 in the first state is different from that in the second state.

[0034] See also Figure 1 When the oil net body 20 is in the first state, the opening 200 of the oil net body 20 faces upward, and the oil net body 20 exposes the air inlet of the housing 10, that is, at least most of the oil net body 20 is located below the plane where the air inlet is located. Figure 3 , when the oil net body 20 is in the second state, the opening 200 of the oil net body 20 faces downward, and the oil net body 20 is hidden in the housing 10, that is, the entire or most of the oil net body 20 is located above the plane where the air inlet is located. In this embodiment, regardless of whether the oil net body 20 is in the first state or the second state, the two opposite sides of the arc wall 21 of the oil net body 20 and the sides of the first end wall 22 and the second end wall 23 can be correspondingly fitted with the four sides of the air inlet of the housing 10, thereby avoiding the problem of too large a gap between the oil net body 20 and the air inlet. On the other hand, the above-mentioned structural design of the oil net body 20 ensures that the oil net body 20 has a large filtering area in both the first state and the second state, and will not have a significant impact on the air volume.

[0035] The oil net body 20 can be adjusted in posture under the drive of the driving device. After the posture adjustment, the height of the oil net body 20 is different, so it can adapt to cookware of different heights. For example, when the height of the cookware is relatively low, the corresponding oil net body 20 can be adjusted to the first state, so that the oil net body as a whole moves downward, close to the smoke source, and improves the oil fume absorption effect; if the height of the cookware is relatively high, the corresponding oil net body 20 can be adjusted to the second state, and the height of the oil net body from the stove is increased to avoid interference with the cookware.

Claims

1. An oil net device for a range hood, used to be arranged at an air inlet on a housing (10) of the range hood, comprising: An oil screen body (20) having air inlet holes (210) distributed thereon; The invention is characterized in that it also includes: A driving device, whose power output end is connected to the oil net body (20) and drives the oil net body (20) to adjust its posture. The oil net body (20) has at least a first state and a second state as its posture changes. The oil net body (20) in the first state has a different height from the oil net body (20) in the second state.

2. The oil screen device for a range hood according to claim 1, characterized in that: The oil net body (20) is rotatable around a horizontally extending axis and is disposed at the air inlet of the housing (10), and switches between the first state and the second state as its rotational position changes.

3. The oil screen device for a range hood according to claim 2, characterized in that: The oil net body (20) comprises an arc-shaped wall (21) extending in the horizontal direction and having an arc-shaped cross section, and a first end wall (22) and a second end wall (23) connected at two ends in the length direction of the arc-shaped wall (21); the first end wall (22), the second end wall (23) and the arc-shaped wall (21) jointly define an opening (200) opposite to the arc-shaped wall (21); at least the arc-shaped wall (21) is provided with air inlet holes (210); and the axis of rotation of the oil net body (20) relative to the housing (10) is arranged adjacent to the opening (200) of the oil net body (20).

4. The oil screen device for a range hood according to claim 3, characterized in that: When the oil net body (20) is in the first state, the opening (200) of the oil net body (20) faces upward, and the air inlet of the casing (10) is exposed outside the oil net body (20); When the oil net body (20) is in the second state, the opening (200) of the oil net body (20) faces downward, and the oil net body (20) is hidden in the casing (10).

5. The oil screen device for a range hood according to claim 3, characterized in that: The cross section of the arc-shaped wall (21) is a semicircle.

6. The oil screen device for a range hood according to claim 3, characterized in that: A first rotating shaft (221) and a second rotating shaft (231) extending outward are respectively provided on the first end wall (22) and the second end wall (23); the first rotating shaft (221) and the second rotating shaft (231) extend on the same straight line, and the straight line on which the first rotating shaft (221) and the second rotating shaft (231) are located is the axis of rotation of the oil net body (20) relative to the casing (10); the oil net body (20) is rotatably connected to the air inlet of the casing (10) via the first rotating shaft (221) and the second rotating shaft (231).

7. The oil screen device for a range hood according to claim 6, characterized in that: Two rotating shaft seats (13) arranged at intervals are provided at the air inlet of the housing (10), and the first rotating shaft (221) and the second rotating shaft (231) are rotatably arranged on the two rotating shaft seats (13) respectively.

8. The oil screen device for a range hood according to claim 3, characterized in that: The oil net body (20) is arranged to extend in the left-right direction.

9. The oil screen device for a range hood according to any one of claims 1 to 8, characterized in that: The driving device comprises a driving motor (31) and a gear transmission assembly (32) drivingly connected to an output shaft of the driving motor (31); a power output end of the gear transmission assembly (32) is connected to the oil net body (20).

10. A range hood, comprising a housing (10) and an oil net, wherein the housing (10) is provided with an air inlet, and the oil net is arranged at the air inlet, wherein: The oil net adopts the oil net device for range hoods as described in any one of claims 1 to 9.

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