Filter net of range hood, air intake system of range hood and range hood

Abstract

The present invention provides a filter net for a range hood, comprising: a mounting plate, suitable for mounting on the output shaft of a motor; a rim, arranged around the mounting plate; a plurality of blades, radially arranged between the mounting plate and the rim with the center of the mounting plate as the center of the circle, the root of the blade being mounted on the mounting plate, the end of the blade being mounted on the rim, and the projection of the root of at least one blade and the adjacent blade on the outer peripheral wall of the mounting plate being spaced apart in the axial direction of the mounting plate, and / or the projection of the end on the outer peripheral wall of the mounting plate being spaced apart in the axial direction of the mounting plate. The total area of ​​the blades can be increased as much as possible, thereby increasing the contact area between the oil smoke and the filter net, thereby filtering as much oil smoke as possible and reducing the oil smoke from entering the range hood. When rotating under the drive of the motor, it has the function of air supply and pressure increase, and can ensure the oil smoke absorption effect.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to a filter screen of a range hood, an air intake system of the range hood and the range hood. Background Art

[0002] As an indispensable household appliance in the kitchen, the range hood has made an outstanding contribution to creating a clean kitchen environment. At present, most of the range hoods on the market use porous oil nets to filter and intercept oil fumes, but this solution has certain disadvantages. Although most of the oil fumes are isolated and filtered out, some oil fume particles still enter the air duct and are discharged to the outside. Over time, oil particles will adhere to the motor and impeller, causing the motor load to increase and the speed to decrease, which not only reduces the suction power of the range hood and affects the life of the whole machine, but also aggravates the outdoor environmental pollution.

[0003] In the prior art, a dynamic filter is installed at the air inlet of the range hood, and the rotation of the dynamic filter is used to mechanically collide with large oil droplets and oil particles, thereby being retained and captured; under the action of centrifugal force, the oil particles fall to the edge of the dynamic filter and accumulate, and flow downward into the oil collection pool. However, the contact area between the dynamic filter and the oil smoke in the prior art is small, and the oil smoke that can be filtered is small. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the dynamic filter in the prior art that it can filter less oil smoke, thereby providing a filter with a range hood, an air intake system of the range hood and a range hood that can filter more oil smoke.

[0005] In order to solve the above technical problems, the present invention provides a filter screen for a range hood, comprising:

[0006] A mounting plate adapted to be mounted on an output shaft of the motor;

[0007] A rim, arranged around the mounting plate;

[0008] A plurality of blades are radially arranged between the mounting disk and the rim with the center of the mounting disk as the center of the circle, the roots of the blades are mounted on the mounting disk, the ends of the blades are mounted on the rim, and the projections of the roots of at least one blade and the adjacent blades on the outer peripheral wall of the mounting disk are offset in the axial direction of the mounting disk, and / or the projections of the ends on the outer peripheral wall of the mounting disk are offset in the axial direction of the mounting disk.

[0009] The projections of the roots or ends of any two adjacent blades on the outer peripheral wall of the mounting plate are offset in the axial direction of the mounting plate.

[0010] The projections of the roots of two adjacent blades on the outer peripheral wall of the mounting plate are flush in the axial direction of the mounting plate, and the projections of the ends of the blades on the outer peripheral wall of the mounting plate are staggered in the axial direction of the mounting plate.

[0011] The angle between the blade surface and the air inlet surface of the range hood is less than 90°.

[0012] The longitudinal section of at least one of the blades is arc-shaped.

[0013] The cross section of at least one of the blades is arc-shaped.

[0014] The wheel rim is provided with an oil guide hole.

[0015] At least one oil guide hole is provided in an area on the rim corresponding to between two adjacent blades.

[0016] The present invention further provides an air intake system for a range hood, comprising the filter screen of the range hood and a motor, wherein the mounting plate is mounted on an output shaft of the motor.

[0017] The air inlet system comprises a volute and a wind wheel installed in the volute, the wind wheel is installed on the output shaft of the motor, and the mounting plate is installed at the air inlet of the wind wheel.

[0018] It also includes a safety isolation net arranged on the outside of the volute.

[0019] The present invention also provides a range hood, comprising the air intake system of the range hood.

[0020] The technical solution of the present invention has the following advantages:

[0021] 1. The filter screen of a range hood provided by the present invention has a total area of ​​the blades increased as much as possible, and the contact area between the oil smoke and the filter screen is increased, so that as much oil smoke as possible is filtered and the oil smoke entering the interior of the range hood is reduced. When the filter screen rotates under the drive of a motor, it has the function of air supply and pressure increase, and can ensure the oil smoke absorption effect.

[0022] 2. The filter screen of a range hood provided by the present invention has the projections of the roots or ends of any two adjacent blades on the outer peripheral wall of the mounting plate offset in the axial direction of the mounting plate, which can further increase the total area of ​​the blades and ensure the contact area between the oil smoke and the filter screen, thereby filtering as much oil smoke as possible.

[0023] 3. The filter screen of a range hood provided by the present invention is characterized in that the projections of the roots of two adjacent blades on the outer peripheral wall of the mounting plate are flush in the axial direction of the mounting plate, and the projections of the ends of the blades on the outer peripheral wall of the mounting plate are staggered in the axial direction of the mounting plate. The structure is compact and the blades can be easily installed between the mounting plate and the rim in an orderly manner.

[0024] 4. The filter screen of a range hood provided by the present invention has a blade surface and an angle between the blade surface and the air inlet surface of the range hood that is less than 90°. The inclined arrangement of the blades can effectively increase the interception of oil smoke and prevent the oil smoke from entering the interior of the range hood.

[0025] 5. In the filter screen of a range hood provided by the present invention, the longitudinal section of at least one blade is arc-shaped. This design increases the collision area between the blade and the oil fume, further improving the oil fume filtering effect.

[0026] 6. In the filter screen of a range hood provided by the present invention, the cross section of at least one blade is arc-shaped, which further increases the collision area between the blade and the oil fume, thereby further improving the oil fume filtering effect.

[0027] 7. The present invention provides a filter screen for a range hood, wherein at least one oil guide hole is provided on the rim in an area corresponding to between two adjacent blades, and the filtered oil is thrown out from the oil guide hole during the rotation of the filter screen, so that the intercepted oil is conveniently collected.

[0028] 8. The present invention provides an air intake system for a range hood, comprising the filter screen of the range hood and a motor, wherein the mounting plate is mounted on the output shaft of the motor. The air intake system can filter more oil smoke and has a good air intake effect.

[0029] 9. The present invention provides an air intake system for a range hood, the air intake system comprising a volute and a wind wheel installed in the volute, the wind wheel being installed on the output shaft of the motor, and the mounting plate being installed at the air inlet of the wind wheel, with a simple and compact structure.

[0030] 10. The air intake system of a range hood provided by the present invention further comprises a safety isolation net arranged on the outside of the volute to prevent the filter from injuring the user when rotating.

[0031] 11. The present invention provides a range hood, comprising the above-mentioned air intake system for the range hood, and the range hood can filter more oil smoke and has a good air intake effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 This is a schematic structural diagram of a filter screen of a range hood provided in Embodiment 1 of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the filter screen in the replaceable embodiment in Embodiment 1;

[0035] Figure 3 It is a front view of an air intake system of a range hood provided in Embodiment 2 of the present invention;

[0036] Figure 4 This is a schematic structural diagram of an air intake system of a range hood provided in Embodiment 2 of the present invention;

[0037] Figure 5 for Figure 4 A schematic diagram of the structure of the air intake system equipped with a safety isolation net;

[0038] Description of reference numerals:

[0039] 1-blade; 2-rim; 3-mounting plate; 4-oil guide hole; 5-wind wheel; 6-volute; 7-motor; 8-output shaft; 9-safety isolation net. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] Example 1

[0045] This embodiment provides a filter screen for a range hood, such as Figure 1 , including a mounting plate 3, a rim 2, and a plurality of blades 1 radially arranged between the mounting plate 3 and the rim 2 with the mounting plate 3 as the center.

[0046] The mounting plate 3 is suitable for being mounted on the output shaft 8 of the motor 7. When the motor 7 rotates, the mounting plate 3 is driven to rotate, thereby driving the blade 1 to rotate. The rim 2 is arranged around the mounting plate 3.

[0047] A plurality of blades 1 are radially arranged between the mounting disk 3 and the rim 2 with the center of the mounting disk 3 as the center of the circle, the root of the blade 1 is mounted on the mounting disk, the end of the blade 1 is mounted on the rim 2, and the projection of the root of at least one blade 1 on the outer peripheral wall of the mounting disk 3 is offset in the axial direction of the mounting disk 3 with that of an adjacent blade 1, or the projection of the end on the outer peripheral wall of the mounting disk is offset in the axial direction of the mounting disk.

[0048] In this embodiment, the projections of the ends of any two adjacent blades 1 on the outer peripheral wall of the mounting plate 3 are offset in the axial direction of the mounting plate. Of course, as a convertible embodiment, the projections of the roots of any two adjacent blades 1 on the outer peripheral wall of the mounting plate 3 are offset in the axial direction of the mounting plate.

[0049] like Figure 1 As shown, the projections of the roots of two adjacent blades 1 on the outer peripheral wall of the mounting disk 3 are flush in the axial direction of the mounting disk 3, and the projections of the ends of the blades 1 on the outer peripheral wall of the mounting disk 3 are offset in the axial direction of the mounting disk 3. In an alternative embodiment, the projections of the roots of two adjacent blades 1 on the outer peripheral wall of the mounting disk 3 are offset in the axial direction of the mounting disk 3, and the projections of the ends of the blades 1 on the outer peripheral wall of the mounting disk 3 are flush in the axial direction of the mounting disk 3.

[0050] The angle between the surface of each blade 1 and the air inlet surface of the range hood is less than 90°, that is, the blade 1 is arranged tilted, which can effectively increase the interception of oil smoke and prevent the oil smoke from entering the interior of the range hood. Figure 1 As shown, the cross-sectional area and the longitudinal section of the blade 1 are both arc-shaped. Compared with the straight-line design, this design increases the area where the blade 1 collides with the oil fume, further improving the oil fume filtering effect.

[0051] The oil intercepted and filtered by the oil smoke will be thrown onto the rim 2 due to the centrifugal force during the rotation of the filter. In order to facilitate the collection of the oil, at least one oil guide hole 4 is provided on the rim 2 in the area corresponding to the area between two adjacent blades 1. After the oil flows out along the oil guide hole 4, it will enter the oil guide groove of the range hood.

[0052] The filter of this embodiment can increase the total area of ​​blades 1 as much as possible, and increase the contact area between oil smoke and the filter, so as to filter as much oil smoke as possible and reduce the oil smoke entering the range hood. When it rotates driven by the motor 7, it has the function of air supply and pressure increase, and can ensure the oil smoke absorption effect.

[0053] In an alternative embodiment, if Figure 2 As shown, the blades 1 are divided into at least two groups, each group of blades 1 is installed on the same layer of the mounting disk 3, and the blades 1 of different groups are installed on different layers. The blades 1 of two adjacent layers are staggered with each other, and the projections of the roots and ends of two adjacent blades 1 in different groups on the outer peripheral wall of the mounting disk are staggered in the axial direction of the mounting disk.

[0054] In an alternative embodiment, one or more oil guide holes 4 are provided on the rim 2 along the circumferential direction of the rim 2 .

[0055] In an alternative embodiment, the longitudinal section or the cross section of the blade 1 is arc-shaped, or neither is arc-shaped.

[0056] Example 2

[0057] This embodiment provides an air intake system for a range hood, such as Figures 3 to 5 As shown, it includes the filter screen of the range hood provided in the above embodiment, and a motor 7, and the mounting plate 3 is mounted on the output shaft 8 of the motor 7.

[0058] The air intake system comprises a volute 6 and a wind wheel 5 installed in the volute 6, the wind wheel 5 is installed on the output shaft 8 of the motor 7, the mounting plate 3 is installed at the air inlet of the wind wheel 5, the output shaft 8 of the motor 7 is installed with both the wind wheel 5 and the filter screen, the structure is simple and compact, and the installation is convenient for users. Figure 3 As shown, the mounting plate 3 is mounted on the end of the output shaft 8 of the motor 7 and fixed by a locking nut. Figure 5 As shown, a safety isolation net 9 is also provided on the outside of the volute 6 to prevent the filter from hurting the user when rotating.

[0059] In this embodiment, only one filter screen as provided in the above embodiment may be installed, or a plurality of filter screens may be installed in a stacked manner.

[0060] The air intake system can filter more oil smoke and has a good air intake effect.

[0061] Example 3

[0062] This embodiment provides a range hood, including the air intake system of the range hood provided in Embodiment 2. The range hood can filter more oil smoke and has a good air intake effect.

[0063] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A filter screen for a range hood, characterized in that: include: Mounting plate (3), adapted to be mounted on the output shaft (8) of the motor (7); A rim (2) arranged around the mounting plate (3); A plurality of blades (1) are radially arranged between the mounting disk (3) and the rim (2) with the center of the mounting disk (3) as the center of the circle, the root of the blade (1) being mounted on the mounting disk (3), the end of the blade (1) being mounted on the rim (2), and the projection of the root of at least one blade (1) on the outer peripheral wall of the mounting disk (3) being offset in the axial direction of the mounting disk (3) from that of an adjacent blade (1), and / or the projection of the end on the outer peripheral wall of the mounting disk (3) being offset in the axial direction of the mounting disk (3).

2. The filter screen of a range hood according to claim 1, characterized in that: Projections of the roots or ends of any two adjacent blades (1) on the outer peripheral wall of the mounting plate (3) are offset in the axial direction of the mounting plate (3).

3. The filter screen of a range hood according to claim 1, characterized in that: The projections of the roots of two adjacent blades (1) on the outer peripheral wall of the mounting plate (3) are flush in the axial direction of the mounting plate (3), and the projections of the ends of the blades (1) on the outer peripheral wall of the mounting plate (3) are offset in the axial direction of the mounting plate (3).

4. The filter screen of a range hood according to claim 1, characterized in that: The included angle between the blade surface of the blade (1) and the air inlet surface of the range hood is less than 90°.

5. The filter screen of a range hood according to claim 1, characterized in that: The longitudinal cross-section of at least one of the blades (1) is arc-shaped.

6. The filter screen of a range hood according to claim 5, characterized in that: The cross section of at least one of the blades (1) is arc-shaped.

7. A filter screen for a range hood according to any one of claims 1 to 6, characterized in that: The wheel rim (2) is provided with an oil guide hole (4).

8. The filter screen of a range hood according to claim 7, characterized in that: At least one oil guide hole (4) is provided in a region on the wheel rim (2) corresponding to between two adjacent blades (1).

9. An air intake system for a range hood, characterized in that: It comprises a filter screen of a range hood according to any one of claims 1 to 8, and a motor (7), wherein the mounting plate (3) is mounted on an output shaft (8) of the motor (7).

10. The air intake system of a range hood according to claim 9, characterized in that: The air intake system comprises a volute (6) and a wind wheel (5) installed in the volute (6); the wind wheel (5) is installed on an output shaft (8) of the motor (7); and the mounting plate (3) is installed at the air inlet of the wind wheel (5).

11. The air intake system of a range hood according to claim 10, characterized in that: It also includes a safety isolation net (9) arranged outside the volute (6).

12. A range hood, characterized in that: An air intake system for a range hood comprising any one of claims 9-11.

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