Guide plate and range hood thereof

Abstract

The utility model discloses a guide plate and a range hood thereof, and the guide plate comprises a guide surface which is obliquely arranged in the vertical direction; the lower surrounding edge is arranged below the flow guide surface, the upper end of the lower surrounding edge is fixedly connected with the flow guide surface, and a cavity with a lower opening and a side opening is defined by the lower surrounding edge and the flow guide surface; and the upper folding edge is arranged above the side opening, and the lower end of the upper folding edge is fixedly connected with the flow guide surface. The guide plate disclosed by the utility model is simple in structure and beneficial to reducing production procedures and improving the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a guide plate and a range hood thereof. Background Art

[0002] A guide plate is generally provided above the sub-chamber of a multi-chamber range hood. The shape of the guide plate changes with the shape of the whole machine. When the new European shape is used, the guide plate is generally provided with multiple folded edges, which increases the working process and reduces production efficiency. At the same time, the folded edges will not only make the appearance of the whole machine uncoordinated, but also cause turbulence in the airflow of the sub-chamber, reducing the smoking capacity of the sub-chamber. Summary of the invention

[0003] The utility model aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the utility model provides a guide plate with a simple structure, which is conducive to reducing production processes and improving production efficiency. The utility model also provides a range hood.

[0004] According to the guide plate provided above, it is implemented by the following technical solution:

[0005] A guide plate comprises: a guide surface, which is arranged obliquely in the vertical direction; a lower surrounding edge, which is arranged below the guide surface and whose upper end is fixedly connected to the guide surface, the lower surrounding edge and the guide surface enclose a cavity with a lower opening and a side opening; and an upper folding edge, which is arranged above the side opening and whose lower end is fixedly connected to the guide surface.

[0006] In some embodiments, a gradually rounded corner is provided between the upper folding edge and the guide surface, and the gradually rounded corner includes a plurality of rounded corners of different sizes.

[0007] In some embodiments, the fillet radius of the gradually rounded corner gradually decreases from the middle to the front and rear sides, or the fillet radius of the gradually rounded corner gradually decreases from the front to the back or from the back to the front.

[0008] In some embodiments, the maximum fillet radius of the gradually rounded corner is 20 to 25 mm.

[0009] In some embodiments, a support reinforcement portion is provided on the upper folding edge.

[0010] In some embodiments, the support reinforcement portion includes a lateral profile arranged along the front-to-back direction.

[0011] In some embodiments, the support reinforcement portion further includes a front vertical profile and / or a rear vertical profile arranged in the up-down direction.

[0012] In some embodiments, the length of the rear vertical profile is greater than the length of the front vertical profile.

[0013] In some embodiments, the lower edge includes a side folded edge, a front folded edge and a rear folded edge, the side folded edge is formed by the end of the guide surface away from the side opening being bent downward and outward or inward, the front folded edge is formed by the front end of the guide surface being bent downward and outward or inward, and the rear folded edge is formed by the rear end of the guide surface being bent downward.

[0014] In some embodiments, a lug extending outward is integrally formed at the rear end of the side fold, and / or a gap-avoiding portion is provided on the front fold.

[0015] According to the range hood provided above, it is implemented through the following technical solutions:

[0016] A range hood, comprising: a smoke collecting hood, wherein two secondary air inlets spaced apart from each other are provided on the smoke inlet surface of the smoke collecting hood, and a mounting port is provided on the top of the smoke collecting hood; with a guide plate as described above, two guide plates are provided in the smoke collecting hood and are respectively arranged outside the two secondary air inlets, the two guide plates divide the interior of the smoke collecting hood into two smoke isolation chambers and a smoke collecting chamber located between the two smoke isolation chambers, the smoke collecting chambers are respectively connected to the secondary air inlets and the mounting port, and the guide plates are configured to guide the smoke flowing in from the secondary air inlets to the mounting port.

[0017] In some embodiments, the mounting opening has two side edges arranged opposite to each other, and the two side edges are detachably connected to the upper folded edges of the two guide plates respectively; the upper folded edges of the two guide plates are each provided with a support reinforcement portion, and the top of the support reinforcement portion is abutted against the bottom of the corresponding side edge.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] 1. The guide plate of the utility model comprises a guide surface, a lower surrounding edge and an upper folding edge. The lower surrounding edge and the guide surface are enclosed to form a cavity with a lower opening and a side opening. The upper folding edge is arranged above the side opening and is fixedly connected to the guide surface. Compared with the guide plate disclosed in CN115823634A, the folding edges of the guide plate are merged, so that the structure of the guide plate is simple, which is conducive to reducing production processes and improving production efficiency.

[0020] 2. By providing a gradual fillet between the guide surface and the upper folded edge, the airflow from the secondary air inlet of the fume hood can quickly transition to the installation port of the fume hood, reducing turbulence and ensuring that the oil smoke at the secondary air inlet does not escape;

[0021] 3. By adding a support reinforcement part to the upper folded edge, it is beneficial to improve the strength of the upper folded edge itself, and secondly, it can provide reliable support for the side of the installation port or the side plate of the bellows assembly, so that the side of the installation port or the side plate of the bellows assembly can press the guide plate tightly against the inner surface of the smoke inlet surface of the smoke hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the guide plate in Example 1 of the utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the guide plate in Example 1 of the utility model. Figure 2 ;

[0024] Figure 3 is a cross-sectional view of the guide plate in Example 1 of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the guide plate in Embodiment 2 of the present utility model;

[0026] Figure 5 It is a structural schematic diagram of the range hood in Embodiment 3 of the present utility model;

[0027] Figure 6 This is a cross-sectional view of the range hood in Embodiment 3 of the present utility model. Figure 1 ;

[0028] Figure 7 This is a cross-sectional view of the range hood in Embodiment 3 of the present utility model. Figure 2 .

[0029] In the figure: 1-guide plate, 10-cavity, 11-guide surface, 121-side fold, 122-front fold, 1221-air avoidance part, 123-rear fold, 13-upper fold, 131-support reinforcement part, 14-gradient fillet; 2-smoke hood, 21-secondary air inlet, 22-installation port, 221-side; 3-oil net. DETAILED DESCRIPTION

[0030] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0031] Example 1

[0032] refer to Figure 1-3, this embodiment provides a guide plate, the guide plate 1 includes a guide surface 11, a lower surrounding edge (not shown in the figure) and an upper folding edge 13, and the guide surface 11 is arranged obliquely in the vertical direction. The lower surrounding edge is arranged below the guide surface 11 and its upper end is fixedly connected to the guide surface 11. The lower surrounding edge and the guide surface 11 are enclosed to form a cavity 10 with a lower opening and a side opening. When the oil smoke flows into the cavity 10 from the lower opening, the guide surface 11 can quickly guide the oil smoke to the side opening to reduce the generation of turbulence. The upper folding edge 13 is arranged above the side opening, and the lower end of the upper folding edge 13 is fixedly connected to the guide surface 11, and the upper end is used to connect with the smoke hood. In this embodiment, the upper folding edge 13 can not only prevent the oil smoke from flowing from the side opening to the top of the guide surface 11, but also can be used to reliably support the side of the smoke hood or the side plate of the bellows assembly. It can be seen that compared with the guide plate disclosed in CN115823634A, the guide plate of this embodiment has a simpler structure by merging the folded edges, which is conducive to reducing production processes and improving production efficiency.

[0033] Furthermore, the guide surface 11 is arranged to face forward and tilt upward, and the guide surface 11 is arranged to face the upper fold edge 13 and tilt upward, so that the guide surface 11 can guide the oil smoke or airflow, which is beneficial to reduce turbulence.

[0034] Furthermore, the lower edge includes a side fold 121, a front fold 122 and a rear fold 123. In the present embodiment, the side fold 121 is in an "L" shape, which is formed by bending downward and outward at one end of the flow guide surface 11 away from the side opening or the upper fold 13. Of course, the side fold 121 can also be designed to be formed by bending downward and inward at one end of the flow guide surface 11 away from the side opening or the upper fold 13. Among them, the vertical section of the side fold 121 serves as a flow blocking surface, which is used to prevent the oil smoke in the cavity 10 from flowing to the side of the side fold 121 away from the side opening; and the horizontal section of the side fold 121 serves as a side flange, which is used to connect or abut with the inner surface of the smoke inlet surface of the smoke hood.

[0035] The front fold 122 is in an "L" shape, which is formed by the front end of the guide surface 11 bending downward and outward. Of course, the front fold 122 can also be designed to be formed by the front end of the guide surface 11 bending downward and inward. Among them, the vertical section of the front fold 122 serves as a flow blocking surface, which is used to prevent the oil smoke in the cavity 10 from flowing to the front side of the front fold 122; and the transverse section of the front fold 122 serves as a front flange, which is used to detachably abut against the inner surface of the smoke inlet surface of the smoke hood. The rear fold 123 is formed by the rear end of the guide surface 11 bending downward, which is used to prevent the oil smoke in the cavity 10 from flowing to the rear side of the rear fold 123, and is also used to detachably abut against the back plate of the smoke hood.

[0036] Furthermore, a lug 1211 extending outward is integrally formed at the rear end of the side fold 121, and the lug 1211 is configured to be detachably connected to the smoke hood. A void portion 1221 arranged near the side opening is provided on the front fold 122, and the void portion 1221 respectively penetrates the horizontal section of the front fold 122 and the lower end of the vertical section of the front fold 122, and is used for the internal flange of the smoke hood to pass through.

[0037] Furthermore, a support reinforcement portion 131 is provided on the upper folding edge 13, and the support reinforcement portion 131 is stamped from a local integral part of the upper folding edge 13 toward the side away from the guide surface 11. In the present embodiment, the support reinforcement portion 131 is configured to strengthen the strength of the upper folding edge 13 itself, and is also used to support the side 221 of the mounting port 22 of the smoke hood 2, or to support the lower end of the side panel of the bellows assembly.

[0038] In this embodiment, the support reinforcement portion 131 includes a transverse profile arranged along the front-to-back direction, which is used to improve the strength of the upper fold 13 and to reliably support the side edge 221 of the mounting opening 22 of the smoke hood 2. Figure 6 The support reinforcement portion 131 further includes a front vertical profile and a rear vertical profile arranged in the up-down direction to strengthen the strength of the upper flange 13, wherein the length of the rear vertical profile is greater than the length of the front vertical profile. In other embodiments, the front vertical profile and / or the rear vertical profile may be omitted.

[0039] refer to Figure 1-3 The guide plate 1 also includes a gradual fillet 14. A gradual fillet 14 is provided between the upper folded edge 13 and the guide surface 11. The gradual fillet 14 includes a plurality of fillets of different sizes, so that the airflow flowing in from the secondary air inlet of the smoke hood can be quickly transitioned to the installation port of the smoke hood, reducing the generation of turbulence, which is beneficial to further improve the smoking capacity at the secondary air inlet and ensure that the oil smoke at the secondary air inlet does not escape.

[0040] In this embodiment, the fillet radius of the gradually rounded corner 14 gradually decreases from the middle to the front and back sides, wherein the maximum fillet radius of the gradually rounded corner 14 is 20 to 25 mm. In other embodiments, the fillet radius of the gradually rounded corner 14 can be designed to gradually decrease from the front to the back, or from the back to the front.

[0041] Example 2

[0042] refer to Figure 4 The difference between this embodiment and embodiment 1 is that the gradual fillet 14 on the guide plate 1 is omitted, so that the structure of the guide plate 1 is simpler and easier to process and manufacture.

[0043] Example 3

[0044] refer to Figure 5-7This embodiment provides a range hood, comprising a smoke hood 2, a guide plate as described in Embodiment 1 or 2, an oil net 3 and a bellows assembly. The smoke hood 2 has a smoke inlet surface arranged from back to front and tilted upward, a main air inlet and two secondary air inlets 21 arranged at intervals on the left and right are provided on the smoke inlet surface of the smoke hood 2, the main air inlet is located between the two secondary air inlets 21, and an oil net 3 is detachably installed at the main air inlet. An installation opening 22 is provided at the top of the smoke hood 2, and a bellows assembly is detachably installed at the installation opening 22.

[0045] Two guide plates 1 are provided in the smoke hood 2, which are respectively arranged outside the two secondary air inlets 21 and connected to the smoke hood 2. The two guide plates 1 divide the interior of the smoke hood 2 into two smoke isolation chambers and a smoke collecting chamber located between the two smoke isolation chambers. The smoke collecting chambers are respectively connected to the secondary air inlets 21 and the installation port 22. Each guide plate 1 is configured to quickly guide the smoke flowing in from the secondary air inlet 21 to the installation port 22. In this embodiment, the height between the front end of the guide surface 11 and the smoke inlet surface of the smoke hood 2 is less than the height between the rear end of the guide surface 11 and the smoke inlet surface of the smoke hood 2, and presents a gradual change, see Figure 7 The height between the guide surface 11 away from the mounting port 22 and the smoke inlet surface of the smoke hood 2 is less than the height between the guide surface 11 close to the mounting port 22 and the smoke inlet surface of the smoke hood 2, and presents a gradual change, see Figure 6 .

[0046] See also Figure 6 The mounting opening 22 has two side edges 221 arranged opposite to each other. The two side edges 221 are formed by bending the top plate of the smoke hood 2 downward, and the two side edges 221 are detachably connected to the upper folding edges 13 of the two guide plates. In addition, the upper folding edges 13 of the two guide plates are each provided with a support reinforcement portion 131, and the top of the support reinforcement portion 131 abuts against the bottom of the corresponding side edge 221, so that the side edge 221 of the smoke hood 2 is reliably supported by the support reinforcement portion 131, the side edge 221 of the smoke hood 2 is lowered, and the anti-fall deformation capability of the smoke hood 2 can be enhanced.

[0047] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A guide plate, characterized in that: include: The guide surface (11) is arranged obliquely in the vertical direction; a lower surrounding edge, which is arranged below the guide surface (11) and whose upper end is fixedly connected to the guide surface (11), wherein the lower surrounding edge and the guide surface (11) are combined to form a cavity (10) having a lower opening and a side opening; and An upper folding edge (13) is arranged above the side opening and the lower end of the upper folding edge is fixedly connected to the guide surface (11).

2. A guide plate according to claim 1, characterized in that: A gradually changing fillet (14) is provided between the upper folding edge (13) and the guide surface (11), and the gradually changing fillet (14) comprises a plurality of fillets of different sizes.

3. A guide plate according to claim 2, characterized in that: The fillet radius of the gradually changing fillet (14) gradually decreases from the middle to the front and rear sides, or the fillet radius of the gradually changing fillet (14) gradually decreases from the front to the back or from the back to the front.

4. A guide plate according to claim 3, characterized in that: The maximum fillet radius of the gradually changing fillet (14) is 20 to 25 mm.

5. A guide plate according to any one of claims 1 to 4, characterized in that: A support reinforcement portion (131) is provided on the upper folding edge (13).

6. A guide plate according to claim 5, characterized in that: The support reinforcement portion (131) includes a transverse profile arranged along the front-rear direction.

7. A guide plate according to claim 6, characterized in that: The support reinforcement portion (131) further comprises a front vertical profile and / or a rear vertical profile arranged in the up-down direction.

8. A guide plate according to claim 7, characterized in that: The length of the rear vertical profile is greater than the length of the front vertical profile.

9. The guide plate according to claim 1, characterized in that: The lower surrounding edge comprises a side folded edge (121), a front folded edge (122) and a rear folded edge (123); the side folded edge (121) is formed by bending one end of the guide surface (11) away from the side opening downward and outward or inward; the front folded edge (122) is formed by bending the front end of the guide surface (11) downward and outward or inward; and the rear folded edge (123) is formed by bending the rear end of the guide surface (11) downward.

10. A guide plate according to claim 9, characterized in that: A lug (1211) extending outward is integrally formed at the rear end of the side fold (121), and / or a space avoidance portion (1221) is provided on the front fold (122).

11. A range hood, characterized in that: include: A smoke collecting hood (2), wherein two secondary air inlets (21) are arranged at intervals on the left and right sides of the smoke inlet surface of the smoke collecting hood (2), and a mounting opening (22) is provided on the top of the smoke collecting hood (2); and A guide plate as claimed in any one of claims 1 to 10, wherein two guide plates are provided in the smoke hood (2) and are respectively arranged outside the two secondary air inlets (21), the two guide plates divide the interior of the smoke hood (2) into two smoke isolation chambers and a smoke collecting chamber located between the two smoke isolation chambers, the smoke collecting chambers are respectively connected to the secondary air inlets (21) and the mounting port (22), and the guide plates are configured to guide the smoke flowing in from the secondary air inlets (21) to the mounting port (22).

12. The range hood according to claim 11, characterized in that: The installation opening (22) has two side edges (221) arranged opposite to each other, and the two side edges (221) are respectively detachably connected to the upper folding edges (13) of the two guide plates; the upper folding edges (13) of the two guide plates are each provided with a support reinforcement portion (131), and the top of the support reinforcement portion (131) is in contact with the bottom of the corresponding side edge (221).

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