Oil fume filter and range hood

Abstract

The present application relates to the technical field of oil fume purification, and discloses an oil fume filter. The oil fume filter includes: a main oil net, provided with one or more oil fume baffles flush with the net surface; two auxiliary oil nets, symmetrically arranged on both sides of the main oil net in the longitudinal direction and arranged at an angle to the main oil net. The oil fume filter provided by the embodiment of the present disclosure is provided with one or more oil fume baffles on the main oil net, and the oil fume baffles can change the oil fume absorption area of ​​the main oil net. Since the total negative pressure suction of the centrifugal fan remains unchanged, after the oil fume filter is assembled to the range hood, part of the negative pressure suction of the original main oil net can be dispersed to the auxiliary oil nets on both sides, so as to effectively improve the negative pressure suction at the auxiliary oil net, thereby enhancing the smoke suction and exhaust efficiency at the auxiliary oil net, and reducing the occurrence of problems such as "smoke leakage". The embodiment of the present disclosure also discloses a range hood.

Description

Technical Field

[0001] The present application relates to the technical field of oil fume purification, for example, to an oil fume filter and a range hood. Background Art

[0002] Range hoods are a popular range hood device in users' homes. They can speed up the discharge of pollutants such as oil smoke during cooking, thereby purifying the kitchen environment. The main components of oil smoke include tiny oil droplets and smoke. Existing range hoods generally use adsorption separation to separate oil droplets from smoke. That is, a high-power centrifugal motor generates negative pressure on the smoke inlet side of the range hood, so that air mixed with oil smoke is sucked into the range hood. In this process, the air will pass through the oil smoke filter of the range hood, and the oil smoke will be adhered to the fine mesh of the oil smoke filter, so as to retain the oil droplets and only allow smoke to pass through and be discharged.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0004] The oil fume filter generally adopts a structure combining a main oil net and a secondary oil net to cover the entire stove area, and the oil fume filter is mostly a main oil net in the middle facing the centrifugal fan. Therefore, the negative pressure force on the smoke inlet side of the main oil net is larger, while the negative pressure force of the secondary oil nets on both sides is smaller. This makes it easy for the oil fume generated in the stove area corresponding to the secondary oil net to not be attracted into the range hood due to the small negative pressure suction force, which is also called "smoke leakage", greatly affecting the exhaust effect of the range hood. Summary of the invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The disclosed embodiments provide an oil fume filter and a range hood to solve the technical problem of "smoke leakage" caused by low negative pressure suction at the auxiliary oil screens on both sides of the range hood in the related art.

[0007] In some embodiments, the oil fume filter comprises:

[0008] The main oil screen is provided with one or more oil fume baffles flush with the screen surface;

[0009] The two auxiliary oil nets are symmetrically arranged on both sides of the main oil net in the longitudinal direction and are arranged at an angle with the main oil net.

[0010] In some further embodiments, the range hood includes the oil fume filter as shown in the above embodiments.

[0011] The oil fume filter provided by the embodiment of the present disclosure can achieve the following technical effects:

[0012] The oil fume filter provided in the embodiment of the present disclosure is provided with one or more oil fume baffles on the main oil net. The oil fume baffles can change the oil fume absorption area of ​​the main oil net. Since the total negative pressure suction of the centrifugal fan remains unchanged, after the oil fume filter is assembled to the range hood, part of the negative pressure suction of the original main oil net can be dispersed to the auxiliary oil nets on both sides, so as to effectively improve the negative pressure suction at the auxiliary oil nets, thereby enhancing the smoke absorption and exhaust efficiency at the auxiliary oil nets and reducing the occurrence of problems such as "smoke leakage".

[0013] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0015] Figure 1 is a front view schematic diagram of the oil fume filter provided by an embodiment of the present disclosure;

[0016] Figure 2 yes Figure 1 A schematic diagram of the structure in direction A;

[0017] Figure 3 is a front schematic diagram of a range hood provided by an embodiment of the present disclosure;

[0018] Figure 4 It is a side schematic diagram of the range hood provided in the embodiment of the present disclosure.

[0019] Among them, 1. Oil fume filter; 11. Main oil net; 12. Auxiliary oil net; 13. Oil fume partition; 2. Range hood; 21. Centrifugal fan; 22. Hood; 3. Cooker. DETAILED DESCRIPTION

[0020] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0021] Figure 1is a front view of the oil fume filter provided by the embodiment of the present disclosure, Figure 2 yes Figure 1 Schematic diagram of the structure in direction A.

[0022] like Figure 1 and 2 As shown, the embodiment of the present disclosure provides an oil fume filter, which includes a main oil net 11 and two auxiliary oil nets 12; here, one of the types of range hoods applicable to the oil fume filter in the embodiment of the present disclosure is a top-suction range hood, and the hood of the top-suction range hood is generally rectangular. Therefore, in order to cover the larger oil fume suction range of the hood itself, the overall shape of the main oil net 11 is also designed to be the same rectangular shape. Here, the direction of the long side of the main oil net 11 is defined as the longitudinal direction, and the direction of the short side is the transverse direction; the two auxiliary oil nets 12 are symmetrically arranged on both sides of the longitudinal direction of the main oil net 11, and are arranged at an angle to the main oil net 11. The oil fume filter has an overall three-fold inverted trapezoidal structure, wherein the main oil net 11 corresponds to the main oil fume suction area of ​​the stove, and the two auxiliary oil nets 12 correspond to the oil fume suction areas on both sides of the main oil fume suction area, so that the oil fume filter can cover most of the stove area and ensure the oil fume suction effect.

[0023] In some embodiments not shown in the figures, the oil fume filter is composed of a main oil net and two auxiliary oil nets, wherein the main oil net and the two auxiliary oil nets are arc-shaped nets with the same or different curvatures, and the overall structure of the oil fume filter composed of three oil nets is approximately arc-shaped. Here, the three-fold inverted trapezoidal and arc-shaped oil fume filters can be selected according to the type of the range hood or the specific oil fume extraction requirements of the range hood.

[0024] In some optional embodiments, the main oil net 11 and the two auxiliary oil nets 12 are an integrated structure, such as the main oil net 11 and the auxiliary oil nets 12 are integrally stamped from the same sheet metal, or are formed by plastic injection molding. The integrated structure can ensure the connection strength between the main oil net 11 and the two auxiliary oil nets 12, reduce the probability of fracture at the connection position between the main oil net 11 and the auxiliary oil net 12, and thus allow the oil fume filter to have a longer service life.

[0025] In this embodiment, the main oil net 11 is provided with an oil fume baffle 13 which is flush with the net surface. The oil fume baffle 13 can change the oil fume absorption area of ​​the main oil net 11. Since the total negative pressure suction of the centrifugal fan remains unchanged, after the oil fume filter is assembled to the range hood, part of the negative pressure suction of the original main oil net 11 can be dispersed to the auxiliary oil nets 12 on both sides, so as to effectively improve the negative pressure suction at the auxiliary oil net 12, thereby enhancing the smoke absorption and exhaust efficiency at the auxiliary oil net 12 and reducing the occurrence of problems such as "smoke leakage".

[0026] Optionally, the shape of the oil fume partition 13 includes but is not limited to a rectangular, square, circular, elliptical, diamond, triangular, etc. In the embodiment of the present disclosure, the oil fume partition 13 in a rectangular shape is mainly used as an example.

[0027] In some optional embodiments, the main oil net 11 and the oil fume baffle 13 are an integrated structure. Here, the main oil net 11 and the oil fume baffle 13 belong to the same plate. After demarcating the area of ​​the oil fume baffle 13, other areas of the main oil net 11 are processed to form densely arranged flow holes for smoke to pass through, and the flow holes are arranged around the oil fume baffle 13.

[0028] Optionally, there is one oil fume baffle 13, which is located in the middle of the main oil net 11, so that the negative pressure suction force reduced at the main oil net 11 can be evenly distributed to the auxiliary oil nets 12 on both sides, so that the oil fume suction efficiency at the auxiliary oil nets 12 on both sides is more uniform and stable. Another option is that there are multiple oil net baffles, such as 2, 3, 5, etc., and multiple oil fume baffles 13 are symmetrically arranged on the main oil net 11, which can also achieve the effect of evenly distributing the negative pressure suction force; here, multiple oil net baffles can be arranged in sequence and symmetrically along the longitudinal or transverse direction of the main oil net 11, for example Figure 1 The main oil net 11 shown is provided with two oil net partitions, which are respectively arranged on both sides of the longitudinal direction of the main oil net 11 and symmetrical along the center line, so that the periphery of the two oil net partitions and the flow holes in the middle can still ensure the normal passage of flue gas.

[0029] In some optional embodiments, in order to ensure that the dispersed negative pressure suction can effectively improve the oil fume absorption effect at the auxiliary oil net 12, by also reducing the adverse effects of the oil fume absorption area and the reduction of the amount of smoke absorption of the main oil net 11 caused by the provision of the oil fume baffle 13, when the number of the oil fume baffles 13 is two, the oil fume baffles 13 and the main oil net 11 satisfy the following relationship:

[0030] 0.85≤c / L<0.90, d1=d2 and 0.12≤d1 / A 主 <0.18,

[0031] Among them, Figure 1 As shown, L is the length of the main oil net 11 in the transverse direction, c is the length of the oil fume partition 13 in the transverse direction of the main oil net 11, d1 is the distance between the oil fume partition 13 and the auxiliary oil net 12 on the corresponding side, d2 is the distance between the two oil fume partitions 13 in the longitudinal direction of the main oil net 11, A 主 It is the length of the main oil screen 11 in the longitudinal direction.

[0032] For example, assuming that the length A of the main oil screen 11 in the longitudinal direction is 主The length L in the transverse direction is 60 cm, and the length L in the transverse direction is 40 cm. According to the above relationship of 0.85≤c / L<0.90, it can be calculated that the length c of the oil fume partition 13 in the transverse direction ranges from 34 cm to 36 cm, and according to d1=d2 and 0.12≤d1 / A 主 <0.18, it can be seen that the distance d1 between the oil fume partition 13 and the auxiliary oil net 12 on its corresponding side and the distance d2 between the two oil fume partitions 13 in the longitudinal direction of the main oil net 11 are both in the range of 7.2cm~10.8cm. It can be further calculated that the length range of the oil fume partition 13 in the longitudinal direction is 13.8cm~19.2cm.

[0033] In some other optional embodiments, in order to ensure the overall oil fume absorbing effect of the oil fume filter, in the longitudinal direction of the main oil net 11, the length of the main oil net 11 and the length of the auxiliary oil net 12 satisfy the following relationship:

[0034] 4≤A 主 / A 副 <5,

[0035] Among them, Figure 2 As shown, A 主 is the length of the main oil screen 11, A 副 is the length of the auxiliary oil net 12. It should be noted that A 副 It is the length of the vertical projection of the auxiliary oil net 12 on the plane where the main oil net 11 is located.

[0036] For example, assuming that the length A of the main oil screen 11 in the longitudinal direction is 主 is 60cm, then according to the above relationship 4≤A 主 / A 副 <5, you can settle and get A 副 The length of the vertical projection of the auxiliary oil net 12 on the plane where the main oil net 11 is located ranges from 12 cm to 15 cm.

[0037] In some other optional embodiments, Figure 2 Shown Figure 1 Schematic diagram of the structure in direction A, the front and rear edges of the auxiliary oil net 12 are not in the same plane in direction A, and the front edge of the auxiliary oil net 12 is to be located further outward. Generally, since the front edge of the auxiliary oil net 12 corresponds to the front of the range hood, the front half of the auxiliary oil net 12 with the above design can cover a larger range in front of the side of the range hood, thereby reducing the escape of oil smoke to the user through the front of the side of the range hood and improving the user experience.

[0038] Therefore, in this embodiment, in the transverse direction of the main oil net 11, the angles between the front and rear edges of the auxiliary oil net 12 and the main oil net 11 satisfy the following relationship:

[0039] ∠θ1>∠θ2,

[0040] Wherein, ∠θ1 is a first angle between the front edge of the auxiliary oil net 12 and the main oil net 11 , and ∠θ2 is a second angle between the rear edge of the auxiliary oil net 12 and the main oil net 11 .

[0041] Optionally, the second angle ∠θ2 between the rear edge of the auxiliary oil net 12 and the main oil net 11 satisfies the following relationship:

[0042] 130°≤∠θ2<170°.

[0043] For example, when ∠θ2 takes a value of 130°, correspondingly, since ∠θ1>∠θ2, ∠θ1 can take a value of 140°, 145°, etc.; for another example, when ∠θ2 takes a value of 160°, ∠θ1 can take a value of 165°, 168°, etc.

[0044] In some optional embodiments, a plurality of flow holes for smoke to pass through are provided on the main oil net 11 and the auxiliary oil net 12. Since the oil fume baffle 13 provided on the main oil net 11 can increase the negative pressure suction force at the auxiliary oil net 12, in order to improve the oil fume suction efficiency at the auxiliary oil net 12, the aperture of the flow holes provided on the auxiliary oil net 12 is greater than or equal to the aperture of the flow holes provided on the main oil net 11. For example, if the aperture of the flow holes on the main oil net 11 is 1.5 mm to 3 mm, the aperture of the corresponding flow holes on the auxiliary oil net 12 can be set to 3.5 mm to 4.5 mm, so that the oil fume in the corresponding area of ​​the auxiliary oil net 12 can be more easily inhaled.

[0045] In some other optional embodiments, in addition to changing the aperture diameter of the flow holes of the main and auxiliary oil nets 12 as adopted in the previous embodiment, the oil fume absorption efficiency at the auxiliary oil net 12 can also be improved by changing the density of the flow holes between the main and auxiliary oil nets 12. In this embodiment, the density of the flow holes opened on the auxiliary oil net 12 is greater than or equal to the density of the flow holes opened on the main oil net 11.

[0046] Figure 3 is a front view of a range hood provided by an embodiment of the present disclosure, Figure 4 It is a side schematic diagram of the range hood provided in the embodiment of the present disclosure.

[0047] like Figure 3 and 4 As shown, the embodiment of the present disclosure further provides a range hood 2, which includes the oil fume filter 1 of any one of the aforementioned multiple embodiments.

[0048] The range hood 2 using the oil fume filter 1 is arranged above the stove 3. When the user uses the stove 3 to cook, the centrifugal fan 21 runs so that the lower area of ​​the range hood 2 becomes a suction area, and the negative pressure suction is used to attract the oil fume into the range hood 2. The oil fume filter 1 is designed so that the negative pressure suction generated by the centrifugal fan 21 is more dispersed to the auxiliary oil nets on both sides, so as to effectively improve the negative pressure suction at the auxiliary oil nets, thereby enhancing the smoke suction and exhaust efficiency at the auxiliary oil nets, and reducing the occurrence of problems such as "smoke leakage".

[0049] In some optional embodiments, the oil fume filter 1 is arranged on the air inlet surface of the hood 22 of the range hood 2. In order to improve the oil fume filter 1's oil fume absorbing effect on the space in front of the range hood 2 (where the user is located), the oil fume filter 1 is tilted relative to the air inlet surface of the hood 22 in this embodiment, and the angle between the main oil net of the oil fume filter and the air inlet surface of the hood 22 satisfies the following relationship:

[0050] 3°≤∠β<8°,

[0051] Among them, Figure 4 As shown, ∠β is the angle between the main oil screen of the oil fume filter 1 and the plane of the smoke hood 22.

[0052] By arranging the oil fume filter 1 on the air inlet surface of the range hood 22 at the above-mentioned angle, the occurrence of oil fume "escaping" to the front of the range hood 2 can be reduced, thereby improving the user experience.

[0053] It should be understood that the present invention is not limited to the processes and structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A fume filter, characterized in that: include: The main oil net is provided with two oil fume baffles flush with the net surface, and the two oil fume baffles are symmetrically arranged on the main oil net; Two auxiliary oil nets are symmetrically arranged on both sides of the main oil net in the longitudinal direction and are arranged at an angle with the main oil net; the aperture of the flow holes provided on the auxiliary oil net is greater than or equal to the aperture of the flow holes provided on the main oil net; The oil fume baffle and the main oil net satisfy the following relationship: 0.85≤c / L<0.90, d1=d2 and 0.12≤d1 / A 主 <0.18, Wherein, L is the transverse length of the main oil net, c is the transverse length of the oil fume baffle in the main oil net, d1 is the distance between the oil fume baffle and the auxiliary oil net on its corresponding side, d2 is the distance between the two oil fume baffles in the longitudinal direction of the main oil net, A 主 It is the length of the main oil net in the longitudinal direction.

2. The oil fume filter according to claim 1, characterized in that: In the longitudinal direction of the main oil net, the length of the main oil net and the length of the auxiliary oil net satisfy the following relationship: 4≤A 主 / A 副 <5 , Among them, A 主 A is the length of the main oil screen in the longitudinal direction, 副 It is the length of the vertical projection of the auxiliary oil network on the plane where the main oil network is located.

3. The oil fume filter according to claim 1, characterized in that: In the transverse direction of the main oil net, the angles between the front and rear edges of the auxiliary oil net and the main oil net satisfy the following relationship: ∠θ1>∠θ2, Wherein, ∠θ1 is a first angle between the front edge of the auxiliary oil net and the main oil net, and ∠θ2 is a second angle between the rear edge of the auxiliary oil net and the main oil net.

4. The oil fume filter according to claim 3, characterized in that: The ∠θ2 satisfies the following relationship: 130°≤∠θ2<170°.

5. The oil fume filter according to claim 1, characterized in that: The density of the flow holes formed on the auxiliary oil network is greater than or equal to the density of the flow holes formed on the main oil network.

6. A range hood, characterized in that: It comprises the oil fume filter as described in any one of claims 1 to 5.

7. The range hood according to claim 6, characterized in that: The oil fume filter cover is arranged on the air inlet surface of the hood of the range hood, and the angle between the main oil net of the oil fume filter and the air inlet surface of the hood satisfies the following relationship: 3°≤∠β＜8°， Wherein, ∠β is the angle between the main oil net of the oil fume filter and the fume hood plane.

Images