Oil screen device and range hood

Abstract

The oil screen device comprises a first oil screen and a second oil screen, the first oil screen and the second oil screen are sequentially arranged in the airflow direction of an air inlet, the first oil screen is provided with a first air inlet area and a second air inlet area, the first air inlet area and the second air inlet area are sequentially arranged in the first direction, and first air inlet holes are evenly distributed in the first air inlet area. The second oil screen is provided with a third air inlet area and a fourth air inlet area which are sequentially arranged along the first direction and are uniformly provided with second air inlet holes; the first driving device is used for driving the first oil screen to move in the first direction relative to the second oil screen, the second driving device is used for driving the second oil screen to move in the second direction relative to the first oil screen, and the first direction is perpendicular to the second direction. According to the oil screen device, the stroke can be dispersed in the first direction and the second direction, the installation space of the oil screen device is greatly saved, and the air volume adjusting process is more flexible.

Description

Technical Field

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

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. In most households, one side of the stove is working during cooking, producing a lot of oil smoke, while the other side produces very little or even no oil smoke. Traditional range hoods use a fixed oil net, which also makes the air inlet fixed. After the range hood is turned on, the entire oil net air inlet area is evenly inlet. Although the air volume of the whole machine is large, it is used to suck the entire stove area indiscriminately and fixedly. This results in half of the exhaust volume of the range hood sucking in clean ineffective air when one side of the burner is working and the other side is not working, or when the amount of oil smoke is relatively small, which seriously wastes the exhaust potential of the range hood itself, wastes energy, and also causes the disadvantage of high noise, resulting in a poor user experience.

[0003] To this end, the Chinese invention patent application with application number CN201810543014.6 discloses an oil net device for a range hood and a range hood, the oil net device comprising an outer oil net, at least two movable oil nets and a limiting plate, the outer oil net being arranged at the air inlet of the range hood, the at least two movable oil nets being respectively slidably arranged on both sides of the outer oil net in a horizontal direction and being located on the upper surface of the outer oil net, the limiting plate being fixedly connected to the outer oil net, and the limiting plate being tightly pressed against the upper surface of the at least movable oil net, when the movable oil net moves to one side of the outer oil net in a horizontal direction, the second air inlet hole on the movable oil net overlaps with the first air inlet hole on the outer oil net, and when the movable oil net moves to the other side of the outer oil net in a horizontal direction, the second air inlet hole on the movable oil net is staggered with the first air inlet hole on the outer oil net; the present invention can adjust the air intake volume of the left and right areas of the oil net according to the oil fume generated by the left and right stoves, so as to achieve efficient oil fume extraction and improve user experience.

[0004] However, the oil net device for the above-mentioned range hood still has certain shortcomings. The above-mentioned movable oil net is only adjusted in lateral movement. In order to meet the adjustment of different air intake air volume states, the movable oil net needs to be set with a larger lateral stroke, which inevitably increases the lateral movable space required for the movable oil net, thereby limiting the installation conditions of the oil net device and easily interfering with other components.

[0005] Therefore, the existing oil net device needs further improvement. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide an oil net device with a more flexible air volume adjustment process and capable of saving installation space in view of the current status of the prior art.

[0007] The second technical problem to be solved by the present invention is to provide a range hood using the oil net device according to 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 screen device for being arranged at the air inlet of the range hood, comprising a first oil screen and a second oil screen arranged in sequence along the air flow direction at the air inlet, the first oil screen having a first air inlet area and a second air inlet area arranged in sequence along the first direction and evenly distributed with first air inlet holes, the second oil screen having a third air inlet area and a fourth air inlet area arranged in sequence along the first direction and evenly distributed with second air inlet holes, the third air inlet area of ​​the second oil screen being opposite to the first air inlet area of ​​the first oil screen, the fourth air inlet area of ​​the second oil screen being opposite to the second air inlet area of ​​the first oil screen, and also comprising a first driving device for driving the first oil screen to move relative to the second oil screen in the second direction and a second driving device for driving the second oil screen to move relative to the first oil screen in the first direction, the first direction being perpendicular to the second direction, and the oil screen device having at least a first state, a second state and a third state as the relative positions of the first oil screen and the second oil screen change:

[0009] In the first state, at least part of the first air inlet holes on the first air inlet area of ​​the first oil net overlaps with at least part of the second air inlet holes on the third air inlet area of ​​the second oil net, and at least part of the first air inlet holes on the second air inlet area of ​​the first oil net overlaps with at least part of the second air inlet holes on the fourth air inlet area of ​​the second oil net;

[0010] In the second state, at least part of the first air inlet holes on the first air inlet area of ​​the first oil net overlaps with at least part of the second air inlet holes on the third air inlet area of ​​the second oil net, and the first air inlet holes on the second air inlet area of ​​the first oil net are staggered with the second air inlet holes on the fourth air inlet area of ​​the second oil net;

[0011] In the third state, the first air inlet holes on the first air inlet area of ​​the first oil net are staggered with the second air inlet holes on the third air inlet area of ​​the second oil net, and at least part of the first air inlet holes on the second air inlet area of ​​the first oil net overlap with at least part of the second air inlet holes on the fourth air inlet area of ​​the second oil net.

[0012] As an improvement, each first air inlet hole on the first air inlet area of ​​the first oil net constitutes a first air inlet hole unit, each second air inlet hole on the third air inlet area of ​​the second oil net constitutes at least two second air inlet hole units arranged sequentially in the first direction, each first air inlet hole on the second air inlet area of ​​the first oil net constitutes at least two first air inlet hole units arranged sequentially in the second direction, and each second air inlet hole on the fourth air inlet area of ​​the second oil net constitutes at least two second air inlet hole units arranged sequentially in the second direction;

[0013] When the first oil net and the second oil net move relative to each other in the first direction, the first air inlet hole units of the first air inlet area of ​​the first oil net can overlap with the second air inlet hole units on the third air inlet area of ​​the second oil net in sequence, and the first air inlet hole units of the second air inlet area of ​​the first oil net can overlap or be staggered with the second air inlet hole units of the fourth air inlet area of ​​the second oil net;

[0014] When the first oil net and the second oil net move relative to each other in the second direction, the first air inlet hole unit of the first air inlet area of ​​the first oil net overlaps with or is staggered with one of the second air inlet hole units on the third air inlet area of ​​the second oil net, and at least one of the first air inlet hole units in the second air inlet area of ​​the first oil net can overlap with at least one of the second air inlet hole units in the fourth air inlet area of ​​the second oil net.

[0015] The second air inlet holes in the two or more second air inlet hole units arranged sequentially in the first direction on the third air inlet area of ​​the above-mentioned second oil net are not completely independent, that is, there may be partial overlap. For example, part of the second air inlet holes in one of the second air inlet hole units on the third air inlet area of ​​the second oil net also constitute part of the second air inlet holes in another second air inlet hole unit. Similarly, the same is true for two or more second air inlet hole units arranged sequentially in the second direction on the fourth air inlet area of ​​the second oil net and two or more first air inlet hole units arranged sequentially in the second direction on the second air inlet area of ​​the first oil net.

[0016] As an improvement, the shape and size of the first air inlet hole on the first oil net are the same as the shape and size of the second air inlet hole on the second oil net.

[0017] As an improvement, the first air inlet hole on the first oil net and the second air inlet hole on the second oil net are circular holes, elliptical holes, square holes or diamond holes.

[0018] As an improvement, the first driving device is a first linear driving mechanism, the power output end of the first linear driving mechanism is connected to the first oil network, and the second driving device is a second linear driving mechanism, the power output end of the second linear driving mechanism is connected to the second oil network.

[0019] As an improvement, the first linear drive mechanism includes a first electric push rod, the power output shaft of the first electric push rod is connected to the first oil net, and the second linear drive mechanism includes a second electric push rod, the power output shaft of the second electric push rod is connected to the second oil net. It is conceivable that the first linear drive mechanism and the second linear drive structure can also adopt other conventional linear motion mechanisms such as a drive motor and a screw slider assembly.

[0020] The technical solution adopted by the utility model to solve the above second technical problem is: a range hood, including a casing, the casing is provided with an air inlet, an oil net is arranged at the air inlet, and the oil net adopts the above oil net device.

[0021] As an improvement, the range hood is a top-suction range hood or a near-suction range hood.

[0022] Compared with the prior art, the advantages of the utility model are as follows: the first oil net and the second oil net of the oil net device can not only move relative to each other in the first direction but also move relative to each other in the second direction. By changing the phase position of the two in the first direction and the second direction, the air intake state of the air inlet at the position of the oil net device can be flexibly adjusted, such as the single-sided air intake state on the left and right sides and the simultaneous air intake state on both sides can be flexibly switched. Compared with the prior art method of only controlling one oil net to move in a single direction to achieve air intake state adjustment, the oil net device can disperse the stroke in the first direction and the second direction, which greatly saves the installation space of the oil net device and makes the air intake state adjustment process more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view of a range hood according to an embodiment of the utility model;

[0024] Figure 2 This is an exploded view of the oil screen device according to an embodiment of the utility model;

[0025] Figure 3 This is a front view of the oil screen device of the utility model embodiment in the first state;

[0026] Figure 4 This is a front view of the oil screen device of the utility model embodiment in the second state;

[0027] Figure 5 This is a front view of the oil screen device according to the embodiment of the utility model in the third state. 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 5 A preferred embodiment of the oil net device and the range hood of the utility model is shown. The range hood includes a casing 1 and a centrifugal fan 13 arranged in the casing 1. The casing 1 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 (not shown) is provided on 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 of this embodiment includes a first oil net 21 and a second oil net 22 arranged in sequence along the air flow direction at the air inlet, and the first oil net 21 and the second oil net 22 can be stacked together. Among them, the first oil net 21 and the second oil net 22 are both rectangular extending left and right, and the length and width dimensions are basically the same. The first oil net 21 has a first air inlet area 211 and a second air inlet area 212 arranged in sequence along the first direction A1 and distributed with first air inlet holes. The second oil net 22 has a third air inlet area 221 and a fourth air inlet area 222 arranged in sequence along the first direction A1 and distributed with second air inlet holes. The third air inlet area 221 of the second oil net 22 is opposite to the first air inlet area 211 of the first oil net 21, and the fourth air inlet area 222 of the second oil net 22 is opposite to the second air inlet area 212 of the first oil net 21.

[0032] The first oil net 21 is driven by the first driving device to move relative to the second oil net 22 along the second direction A2, and the second oil net 22 is driven by the second driving device to move relative to the first oil net 21 along the first direction A1. The first direction A1 is perpendicular to the second direction A2. Figure 1Taking the top suction range hood shown as an example, the first direction A1 mentioned above can be understood as the left-right direction, and the second direction A2 mentioned above can be understood as the front-back direction. The first driving device can adopt a first linear driving mechanism, preferably, the first linear driving mechanism includes a first electric push rod 31, and the power output shaft of the first electric push rod 31 is connected to the first oil net 21. The second driving device can adopt a second linear driving mechanism, preferably, the second linear driving mechanism includes a second electric push rod 32, and the power output shaft of the second electric push rod 32 is connected to the second oil net 22.

[0033] Each first air inlet hole on the first air inlet area 211 of the first oil net 21 constitutes a first air inlet hole unit 210, and each first air inlet hole on the second air inlet area 212 of the first oil net 21 constitutes at least two first air inlet hole units 210 arranged in sequence in the second direction A2. Each second air inlet hole on the third air inlet area 221 of the second oil net 22 constitutes at least two second air inlet hole units 220 arranged in sequence in the first direction A1, and each second air inlet hole on the fourth air inlet area 222 of the second oil net 22 constitutes at least two second air inlet hole units 220 arranged in sequence in the second direction A2. Figure 2 The first air inlet area 211 of the first oil net 21 shows a first air inlet hole unit 210, the second air inlet area 212 shows two first air inlet hole units 210 arranged sequentially in the second direction A2, the third air inlet area 221 of the second oil net 22 shows two second air inlet hole units 220 arranged sequentially along the first direction A1, and the fourth air inlet area 222 shows two second air inlet hole units 220 arranged sequentially along the second direction A2. The second air inlet holes in the two or more second air inlet hole units 220 arranged in sequence in the first direction A1 on the third air inlet area 221 of the second oil net 22 mentioned above are not completely independent, that is, there may be partial overlap. For example, part of the second air inlet holes in one of the second air inlet hole units 220 on the third air inlet area 221 of the second oil net 22 also constitute part of the second air inlet holes in another second air inlet hole unit 220. Similarly, the two or more second air inlet hole units 220 arranged in sequence in the second direction A2 on the fourth air inlet area 222 of the second oil net 22 and the two or more first air inlet hole units 210 arranged in sequence in the second direction A2 on the second air inlet area 212 of the first oil net 21 are also the same, and they will not be repeated.

[0034] The oil screen device of this embodiment has at least a first state, a second state and a third state as the relative positions of the first oil screen 21 and the second oil screen 22 change:

[0035] In the first state, the first air inlet hole unit 210 on the first air inlet area 211 of the first oil net 21 overlaps with one of the second air inlet hole units 220 on the third air inlet area 221 of the second oil net 22, and the two first air inlet hole units 210 on the second air inlet area 212 of the first oil net 21 overlap with the two second air inlet hole units 220 on the fourth air inlet area 222 of the second oil net 22. In this state, the left and right sides of the oil net device are in an open state and can both absorb and exhaust oil fumes.

[0036] In the second state, the first air inlet hole unit 210 on the first air inlet area 211 of the first oil net 21 overlaps with another second air inlet hole unit 220 on the third air inlet area 221 of the second oil net 22, and the two first air inlet hole units 210 on the second air inlet area 212 of the first oil net 21 and the two second air inlet hole units 220 on the fourth air inlet area 222 of the second oil net 22 are staggered. In this state, the left side of the oil net device is in an open state and can absorb and exhaust oil fumes, while the right side is in a closed state and cannot absorb and exhaust oil fumes.

[0037] In the third state, the first air inlet hole unit 210 on the first air inlet area 211 of the first oil net 21 and the two second air inlet hole units 220 on the third air inlet area 221 of the second oil net 22 are staggered, and a first air inlet hole unit 210 on the second air inlet area 212 of the first oil net 21 overlaps with a second air inlet hole unit 220 on the fourth air inlet area 222 of the second oil net 22. In this state, the right side of the oil net device is in an open state and can absorb and exhaust oil fumes, while the left side is in a closed state and cannot absorb and exhaust oil fumes.

[0038] When the oil net device is in the second state and the third state mentioned above, closing one side of the oil net device can increase the flow on the other side (increase the negative pressure). When the fan speed is constant, the negative pressure on the other side can be increased by closing the smoke outlet on one side. When the fan speed is not increased (the fan noise remains unchanged), the smoke extraction effect can also be improved. This is suitable for the scenario of cooking on one side of the stove.

[0039] Combination Figure 3 and Figure 4 The second driving device drives the second oil screen 22 along Figure 3 Move in the direction of the arrow, the oil screen device can be Figure 3 The first state shown in FIG. Figure 4 The second state shown in . Figure 3 and Figure 5 The first driving device drives the first oil screen 21 along Figure 5 Move in the direction of the arrow, the oil screen device can be Figure 3 The first state shown in FIG. Figure 5 The third state shown in .

[0040] The range hood of this embodiment further includes a first cooking state recognition sensor 141 and a second cooking state recognition sensor 142 disposed on the left and right sides of the bottom of the fume collecting hood 12. The first cooking state recognition sensor 141, the second cooking state recognition sensor 142, and the first driving device and the second driving device are all electrically connected to the controller of the range hood. The controller of the range hood can control the first driving device and the second driving device to operate and switch the oil net device to a corresponding state according to the cooking state signal transmitted by the first cooking state recognition sensor 141 and the second cooking state recognition sensor 142. For example, when the first cooking state recognition sensor 141 and the second cooking state recognition sensor 142 detect that there is cooking operation on both the left and right sides of the stove, the controller controls the first driving device and the second driving device to operate and adjusts the oil net device to the corresponding first state, so that both the left and right sides can absorb and exhaust oil fumes. When the first cooking state identification sensor 141 and the second cooking state identification sensor 142 detect that cooking operation is performed only on the left side or only on the right side of the stove, the controller controls the first driving device and the second driving device to operate, and adjusts the oil net device to the corresponding second state or third state, so that the oil net device can absorb and exhaust oil fumes on one side.

[0041] The first cooking status recognition sensor 141 and the second cooking status recognition sensor 142 of this embodiment can be an oil smoke concentration sensor or an image detection device for identifying whether there is oil smoke in the corresponding area. A temperature detection structure can also be used to detect whether the corresponding burner is in use by judging the temperature.

[0042] The oil net device of this embodiment can be applied to both top-suction range hoods and close-suction range hoods.

Claims

1. An oil net device, used for being arranged at the air inlet of a range hood, comprising a first oil net (21) and a second oil net (22) arranged in sequence along the air flow direction at the air inlet, the first oil net (21) having a first air inlet area (211) and a second air inlet area (212) arranged in sequence along a first direction (A1) and both having first air inlet holes distributed thereon, the second oil net (22) having a third air inlet area (221) and a fourth air inlet area (222) arranged in sequence along the first direction (A1) and both having second air inlet holes distributed thereon, the third air inlet area (221) of the second oil net (22) being opposite to the first air inlet area (211) of the first oil net (21), the fourth air inlet area (222) of the second oil net (22) being opposite to the second air inlet area (212) of the first oil net (21), characterized in that: The invention also comprises a first driving device for driving the first oil net (21) to move relative to the second oil net (22) along a second direction (A2) and a second driving device for driving the second oil net (22) to move relative to the first oil net (21) along a first direction (A1), wherein the first direction (A1) is perpendicular to the second direction (A2), and the oil net device has at least a first state, a second state and a third state as the relative positions of the first oil net (21) and the second oil net (22) change: In a first state, at least part of the first air inlet holes on the first air inlet area (211) of the first oil net (21) overlaps with at least part of the second air inlet holes on the third air inlet area (221) of the second oil net (22), and at least part of the first air inlet holes on the second air inlet area (212) of the first oil net (21) overlaps with at least part of the second air inlet holes on the fourth air inlet area (222) of the second oil net (22); In the second state, at least part of the first air inlet holes on the first air inlet area (211) of the first oil net (21) overlaps with at least part of the second air inlet holes on the third air inlet area (221) of the second oil net (22), and the first air inlet holes on the second air inlet area (212) of the first oil net (21) and the second air inlet holes on the fourth air inlet area (222) of the second oil net (22) are arranged in a staggered manner; In a third state, the first air inlet holes on the first air inlet area (211) of the first oil net (21) and the second air inlet holes on the third air inlet area (221) of the second oil net (22) are arranged in a staggered manner, and at least part of the first air inlet holes on the second air inlet area (212) of the first oil net (21) overlaps with at least part of the second air inlet holes on the fourth air inlet area (222) of the second oil net (22).

2. The oil screen device according to claim 1, characterized in that: Each first air inlet hole on the first air inlet area (211) of the first oil net (21) constitutes a first air inlet hole unit (210); each second air inlet hole on the third air inlet area (221) of the second oil net (22) constitutes at least two second air inlet hole units (220) arranged in sequence in the first direction (A1); each first air inlet hole on the second air inlet area (212) of the first oil net (21) constitutes at least two first air inlet hole units (210) arranged in sequence in the second direction (A2); each second air inlet hole on the fourth air inlet area (222) of the second oil net (22) constitutes at least two second air inlet hole units (220) arranged in sequence in the second direction (A2); When the first oil net (21) and the second oil net (22) move relative to each other in a first direction (A1), the first air inlet hole units (210) of the first air inlet area (211) of the first oil net (21) can overlap with the second air inlet hole units (220) on the third air inlet area (221) of the second oil net (22) in sequence, and the first air inlet hole units (210) of the second air inlet area (212) of the first oil net (21) can overlap with or be staggered with the second air inlet hole units (220) of the fourth air inlet area (222) of the second oil net (22); When the first oil net (21) and the second oil net (22) move relative to each other in the second direction (A2), the first air inlet hole unit (210) of the first air inlet area (211) of the first oil net (21) and one of the second air inlet hole units (220) on the third air inlet area (221) of the second oil net (22) are overlapped or arranged in a staggered manner, and at least one of the first air inlet hole units (210) of the second air inlet area (212) of the first oil net (21) can overlap with at least one of the second air inlet hole units (220) of the fourth air inlet area (222) of the second oil net (22).

3. The oil screen device according to claim 1, characterized in that: The shape and size of the first air inlet hole on the first oil net (21) are the same as the shape and size of the second air inlet hole on the second oil net (22).

4. The oil screen device according to claim 3, characterized in that: The first air inlet hole on the first oil net (21) and the second air inlet hole on the second oil net (22) are circular holes, elliptical holes, square holes or diamond holes.

5. The oil screen device according to any one of claims 1 to 4, characterized in that: The first drive device is a first linear drive mechanism, the power output end of the first linear drive mechanism is connected to the first oil net (21), and the second drive device is a second linear drive mechanism, the power output end of the second linear drive mechanism is connected to the second oil net (22).

6. The oil screen device according to claim 5, characterized in that: The first linear drive mechanism comprises a first electric push rod (31), the power output shaft of the first electric push rod (31) is connected to the first oil net (21), and the second linear drive mechanism comprises a second electric push rod (32), the power output shaft of the second electric push rod (32) is connected to the second oil net (22).

7. A range hood, comprising a housing (1), wherein the housing (1) is provided with an air inlet, wherein an oil net is provided at the air inlet, wherein: The oil net adopts the oil net device according to any one of claims 1 to 6.

8. The range hood according to claim 7, characterized in that: The range hood is a top suction range hood or a close suction range hood.

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