Range hood

Abstract

The utility model provides a range hood and belongs to the technical field of kitchen appliances. The range hood comprises a smoke collecting cavity and a shielding structure, the shielding structure is arranged in the smoke collecting cavity, and an air inlet is formed in the bottom face of the smoke collecting cavity; the shielding structure at least comprises a filtering part and a connecting part, the filtering part is provided with a plurality of ventilation openings, the filtering part is arranged on an air inlet path of the air inlet and located between the air inlet and a draught fan of the extractor hood, and one end of the filtering part is fixed to the top face of the smoke collecting cavity through the connecting part. The shielding structure of the connecting part is fixed on the top surface of the smoke collecting cavity, so that the mounting position of the filtering part is raised to the maximum extent, the distance between the filtering part and the air inlet is increased to the maximum extent, the influence of the filtering part on inlet air is weakened, and the pressure loss is reduced. Although the distance between the filtering part and the air inlet is increased, most oil smoke can pass through the filtering part from the ventilation opening under the action of the fan, and light and small objects are blocked by the filtering part, so that the extractor hood with the small air inlet can be provided with a shielding structure for blocking the light and small objects.

Description

Technical Field

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

[0002] When the range hood is working, the airflow from the air inlet can easily suck small objects such as dry rags and paper scraps under the range hood into the fan system, which will hinder the rotation of the impeller and cause abnormal noise. However, when the air inlet size of the range hood is small, the air flow speed at the air inlet is generally large. At this time, if a structure is set to block small objects, it will cause a large pressure loss and affect the air volume of the whole machine. Therefore, in the prior art, when the air inlet size is small, the range hood is basically not equipped with a blocking structure, resulting in a range hood with a small air inlet size that always has the risk of sucking in small objects. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a range hood to overcome the defect in the prior art that a range hood with a smaller air inlet size is difficult to be provided with a blocking structure.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A range hood comprises a smoke collecting chamber and a shielding structure, wherein the shielding structure is arranged inside the smoke collecting chamber, and an air inlet is arranged on the bottom surface of the smoke collecting chamber;

[0006] The shielding structure at least includes a filter part and a connecting part, the filter part is provided with a plurality of ventilation holes, the filter part is arranged on the air inlet path of the air inlet and is located between the air inlet and the fan of the range hood, and one end of the filter part is fixed to the top surface of the smoke collecting chamber through the connecting part.

[0007] In this solution, the shielding structure is fixed to the top surface of the smoke collecting chamber through the connecting part, which raises the installation position of the filter part in the shielding structure to the maximum extent, increases the distance between the filter part and the air inlet to the maximum extent, weakens the influence of the filter part on the air intake, and reduces the pressure loss. Although the distance between the filter part and the air inlet increases, under the action of the fan, most of the oil smoke will pass through the filter part from the vent, and small objects will be blocked by the filter part, so that the range hood with a smaller air inlet size can also be appropriately provided with a shielding structure to block small objects.

[0008] Preferably, the other end of the filter portion extends obliquely toward the bottom surface of the smoke collecting chamber;

[0009] And / or, a projection of the filter portion in the height direction of the range hood covers the air inlet.

[0010] In this solution, one end of the filter is fixed to the top surface of the smoke collecting chamber, and the other end extends obliquely toward the bottom surface of the smoke collecting chamber, so that one end of the filter is raised and the other end is gathered toward the bottom surface of the smoke collecting chamber. The filter forms a cross-sectional posture of the air inlet path of the vent as much as possible, preventing oil smoke from flowing to the fan from places other than the filter, thereby reducing the filtering effect of the filter. In addition, since the air inlet is arranged on the bottom surface of the smoke collecting chamber, the air inlet path basically extends in the vertical direction, and the projection of the filter in the height direction of the range hood is arranged to cover the air inlet, so that the oil smoke can flow directly toward the filter, avoiding the oil smoke airflow from impacting other parts in the smoke collecting chamber, causing oil droplets to gather in other parts in the smoke collecting chamber, and avoiding other parts in the smoke collecting chamber from blocking the oil smoke airflow, thereby minimizing pressure loss.

[0011] Preferably, the angle between the filter portion and the top surface of the smoke collecting chamber is θ, and 20°≤θ≤60°.

[0012] In the present solution, through the above-mentioned structural form, the filter part is as close to the top surface of the smoke collecting chamber as possible, and away from the bottom surface (air inlet) of the smoke collecting chamber. Therefore, the filter part is set as flat as possible, increasing the contact area between the smoke airflow and the filter part, reducing the pressure loss, so as to further weaken the influence of the filter part on the incoming air and ensure that the incoming air volume is not affected.

[0013] Preferably, there is a gap between the filter portion and the bottom surface of the smoke collecting chamber.

[0014] In this solution, the above-mentioned structural form can prevent the filter part from coming into interference contact with the bottom surface of the smoke collecting chamber or from being deformed by collision during the installation process.

[0015] Preferably, the vent runs through a side of the filter part facing away from the air inlet from the side of the filter part facing the air inlet, and the vent is in the shape of a waist-shaped hole;

[0016] And / or, the plurality of ventilation openings are arranged sequentially along the first direction.

[0017] In this solution, the vent runs through the side of the filter unit facing the air inlet from the side of the filter unit facing away from the air inlet, so that the through direction of the vent is basically consistent with the air inlet path of the air inlet, which facilitates the smooth passage of smoke through the vent and reduces pressure loss; and compared with the shape of a circular hole, the overall structure of the vent is more narrow and long in the shape of a waist-shaped hole, which can increase the ventilation volume and reduce the number of openings. In addition, when multiple vents are arranged in sequence along the first direction, the overall structure is more regular and convenient for processing and manufacturing. When the vent is both waist-shaped and multiple vents are arranged in sequence along the first direction, the shielding portion can form a grid structure, which can form a better balance in ensuring the ventilation volume, forming an effective barrier to light and small objects, and ensuring the structural strength of the shielding portion.

[0018] Preferably, the projection of the connecting portion in the height direction of the range hood does not overlap with the air inlet;

[0019] And / or, a dimension of the connecting portion in the width direction of the range hood is d, 5mm≤d≤15mm.

[0020] In this solution, the projection of the connection part in the height direction of the range hood does not overlap with the air inlet, which can avoid the contact between the smoke flow and the connection part as much as possible, reduce the accumulation of oil droplets on the connection part, and once the oil droplets on the connection part accumulate and drip, it can also prevent the oil droplets from dripping directly from the air inlet to the stove. In addition, the dimension of the connection part in the width direction of the range hood is set to d, 5mm≤d≤15mm, and the width of the connection part is narrowed as much as possible to further reduce the accumulation of oil droplets on the connection part.

[0021] Preferably, the shielding structure further includes a partition, and the partition is arranged between the air inlet and the side wall of the smoke collecting chamber.

[0022] In the present solution, the partition part separates the side wall of the smoke collecting chamber from the air inlet through the above-mentioned structural form, so as to minimize the intersection of the airflow at the side wall of the smoke collecting chamber and the smoke airflow at the air inlet to form a vortex. The airflow vortex not only causes noise, but also creates resistance to the smoke airflow at the air inlet. Therefore, the provision of the partition part helps to reduce the airflow noise of the range hood and helps to increase the air volume.

[0023] Preferably, the smoke collecting chamber comprises a first side wall provided with a control panel, and the partition is arranged between the air inlet and the first side wall.

[0024] In the present embodiment, the first side wall with the control panel has a more complex structure and a more irregular surface. The noise generated by the smoke airflow impacting the first side wall is greater, and there is a risk of smoke entering the control panel and damaging the control panel. By arranging the partition between the air inlet and the first side wall, the partition can provide a certain degree of protection for the control panel while reducing the airflow noise.

[0025] Preferably, the partition is fixed to the top surface of the smoke collecting chamber through the connecting portion, and a gap is provided between the partition and the bottom surface of the smoke collecting chamber.

[0026] In this solution, the partition part is provided with an installation foundation in the smoke collecting chamber through the connecting part, and there is a gap between the partition part and the bottom surface of the smoke collecting chamber, which can prevent the partition part from interfering with the bottom surface of the smoke collecting chamber or causing collision and deformation during installation.

[0027] Preferably, the shielding structure is an integrally formed structure.

[0028] In this solution, the one-piece shielding structure reduces the connection process between different parts, is easy to manufacture and has better structural strength.

[0029] The positive and progressive effects of the utility model are:

[0030] In the utility model, the shielding structure is fixed to the top surface of the smoke collecting chamber through the connecting part, which raises the installation position of the filter part in the shielding structure to the maximum extent, increases the distance between the filter part and the air inlet to the maximum extent, weakens the influence of the filter part on the air intake, and reduces the pressure loss. Although the distance between the filter part and the air inlet is increased, under the action of the fan, most of the oil smoke will pass through the filter part from the vent, and small objects will be blocked by the filter part, so that the range hood with a smaller air inlet size can also be appropriately provided with a shielding structure to block small objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a three-dimensional structural schematic diagram of a range hood according to a preferred embodiment of the utility model.

[0032] Figure 2 It is a schematic diagram of the three-dimensional structure inside the smoke collecting chamber of the range hood according to the preferred embodiment of the utility model.

[0033] Figure 3 The figure is a schematic cross-sectional view of a range hood according to a preferred embodiment of the present invention.

[0034] Figure 4 for Figure 3 Enlarged schematic diagram of part A.

[0035] Figure 5 It is a schematic diagram of the three-dimensional structure of the shielding structure of a preferred embodiment of the utility model.

[0036] Description of reference numerals:

[0037] Smoke chamber 100

[0038] The first side wall 110

[0039] Control Panel111

[0040] Air inlet 120

[0041] Shielding structure 200

[0042] Filter unit 210

[0043] Vent 211

[0044] Connecting part 220

[0045] Partition 230

[0046] Fan 300

[0047] First direction B

[0048] Width direction X

[0049] Length direction Y

[0050] Height direction Z DETAILED DESCRIPTION

[0051] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0052] like Figure 1-Figure 5 As shown, this embodiment provides a range hood, which includes a smoke collecting chamber 100 and a shielding structure 200. The shielding structure 200 is arranged inside the smoke collecting chamber 100, and the bottom surface of the smoke collecting chamber 100 is provided with an air inlet 120; the shielding structure 200 at least includes a filter part 210 and a connecting part 220, the filter part 210 is provided with a plurality of ventilation holes 211, the filter part 210 is arranged on the air inlet path of the air inlet 120 and is located between the air inlet 120 and the fan 300 of the range hood, and one end of the filter part 210 is fixed to the top surface of the smoke collecting chamber 100 through the connecting part 220.

[0053] The shielding structure 200 is fixed to the top surface of the smoke collecting chamber 100 through the connecting part 220, which raises the installation position of the filter part 210 in the shielding structure 200 to the maximum extent, increases the distance between the filter part 210 and the air inlet 120 to the maximum extent, weakens the influence of the filter part 210 on the air intake, and reduces the pressure loss. Although the distance between the filter part 210 and the air inlet 120 increases, under the action of the fan 300, most of the oil smoke will pass through the filter part 210 from the vent 211, and small objects will be blocked by the filter part 210, so that the range hood with a smaller air inlet 120 can also be appropriately provided with a shielding structure 200 that blocks small objects.

[0054] Furthermore, if Figure 3 and Figure 4 As shown, the other end of the filter portion 210 extends obliquely toward the bottom surface of the smoke collecting chamber 100 .

[0055] Thus, one end of the filter part 210 is fixed to the top surface of the smoke collecting chamber 100, and the other end is obliquely extended toward the bottom surface of the smoke collecting chamber 100, so that one end of the filter part 210 is raised and the other end is gathered toward the bottom surface of the smoke collecting chamber 100. The filter part 210 forms a cross-sectional posture of the air inlet path of the vent 211 as much as possible, preventing oil smoke from flowing to the fan 300 from outside the filter part 210 and reducing the filtering effect of the filter part 210.

[0056] like Figure 4As shown, the angle between the filter part 210 and the top surface of the smoke collecting chamber 100 is θ, and in this embodiment θ=20°, so that the filter part 210 is as close to the top surface of the smoke collecting chamber 100 as possible, and away from the bottom surface (the air inlet 120) of the smoke collecting chamber 100. Therefore, the filter part 210 is set as flat as possible, increasing the contact area between the smoke airflow and the filter part 210, reducing the pressure loss, so as to further weaken the influence of the filter part 210 on the incoming air, and ensure that the incoming air volume is not affected.

[0057] In other optional embodiments, θ=60° can be set. Although the filter portion 210 is slightly away from the top surface of the smoke collecting chamber 100, when the filter portion 210 is extended to a position close to the bottom surface of the smoke collecting chamber 100 in order to ensure the blocking effect of the filter portion 210 on light and small objects, the angle θ between the filter portion 210 and the top surface of the smoke collecting chamber 100 is set to 60°. This can shorten the total extension length of the filter portion 210 and save materials.

[0058] In other optional embodiments, θ=40° may be set to balance the need for smoothly setting the filter portion 210 and the need for shortening the extension length.

[0059] Of course, in practice, the specific value of θ is not limited to the above three examples, and any value between 20° and 60° is acceptable.

[0060] In addition, in this embodiment, the projection of the filter portion 210 in the height direction Z of the range hood covers the air inlet 120 .

[0061] like Figure 1 and Figure 3 As shown, since the air inlet 120 is arranged on the bottom surface of the smoke collecting chamber 100, the air inlet path basically extends in the upward direction. The projection of the filter part 210 in the height direction Z of the range hood covers the air inlet 120, which can make the oil smoke flow directly toward the filter part 210, thereby preventing the oil smoke airflow from impacting other parts in the smoke collecting chamber 100 and causing oil droplets to gather in other parts in the smoke collecting chamber 100, and avoiding other parts in the smoke collecting chamber 100 from blocking the oil smoke airflow, thereby minimizing pressure loss.

[0062] In this embodiment, it is preferred that the other end of the filter 210 extends obliquely toward the bottom surface of the smoke collecting chamber 100 and the projection of the filter 210 in the height direction Z of the range hood covers the air inlet 120. However, it is understandable that in other optional embodiments, it is also possible to choose to only set the other end of the filter 210 to extend obliquely toward the bottom surface of the smoke collecting chamber 100 or the projection of the filter 210 in the height direction Z of the range hood to cover the air inlet 120 according to conditions such as actual installation space and ventilation effect requirements. For example, only when the projection of the filter 210 in the height direction Z of the range hood covers the air inlet 120, the filter 210 can be set horizontally without tilting.

[0063] Specifically, Figure 4 and Figure 5 As shown, the vent 211 in this embodiment passes through the filter 210 from the side facing the air inlet 120 to the side facing away from the air inlet 120. Therefore, the through direction of the vent 211 is substantially consistent with the air inlet path of the air inlet 120, which facilitates the smooth passage of smoke through the vent 211 and reduces pressure loss.

[0064] Preferably, the ventilation opening 211 in this embodiment is in the shape of a waist-shaped hole. Compared with the shape of a round hole, the overall structure of the waist-shaped ventilation opening 211 is narrower and longer, which can increase the ventilation volume and reduce the number of openings.

[0065] In addition, the plurality of ventilation openings 211 in this embodiment are sequentially arranged along the first direction B, so that the overall structure of the filter unit 210 is more regular and is easy to process and manufacture.

[0066] When the vents 211 are waist-shaped and multiple vents 211 are arranged in sequence along the first direction B, the shielding portion can form a grid structure, which can achieve a better balance in ensuring ventilation volume, effectively blocking light and small objects, and ensuring the structural strength of the shielding portion.

[0067] like Figure 5 As shown, the first direction B in this embodiment is selected as the long side direction of the shielding portion. In other optional embodiments, the first direction B may also be the wide side direction, diagonal direction or other direction of the shielding portion; the specific shape of the vent 211 may also be set to a circle or other irregular shape according to actual conditions, and the arrangement of the vent 211 may also be set to a nonlinear arrangement.

[0068] In this embodiment, the projection of the connecting portion 220 in the height direction Z of the range hood does not overlap with the air inlet 120 .

[0069] In this way, the smoke flow can be avoided from contacting the connecting portion 220 as much as possible, the oil droplet aggregation of the connecting portion 220 can be weakened, and once the oil droplets on the connecting portion 220 are gathered and dripped, the oil droplets can be prevented from dripping directly from the air inlet 120 to the stove.

[0070] Specifically, Figure 4 As shown, in the width direction X of the range hood, the connecting portion 220 is located on the side of the air inlet 120 away from the fan 300, that is, the projection of the connecting portion 220 in the height direction Z of the range hood is located outside the side of the air inlet 120 away from the fan 300, so that under the action of the fan 300, the flow path of the oil smoke can avoid the connecting portion 220 as much as possible.

[0071] like Figure 2 and Figure 3 As shown, the smoke collecting chamber 100 is roughly in a cubic shape. In order to ensure the connection strength, the extension distance of the connecting portion 220 in the length direction Y of the range hood is basically consistent with the length of the smoke collecting chamber 100; the size of the connecting portion 220 in the width direction X of the range hood is d, and in this embodiment d=5mm. The width of the connecting portion 220 is narrow, which can further weaken the aggregation of oil droplets on the connecting portion 220.

[0072] In other optional embodiments, d may be set to 15 mm. While reducing the aggregation of oil droplets on the connecting portion 220, the slightly widened connecting portion 220 can ensure its own structural strength and avoid breakage.

[0073] In other optional embodiments, d=10 mm may be set to balance the need to reduce the aggregation of oil droplets on the connecting portion 220 and the need to ensure the structural strength of the connecting portion 220 .

[0074] Of course, in practice, the specific value of d is not limited to the above three examples, and any value between 5 mm and 15 mm is acceptable.

[0075] In this embodiment, a mounting hole is opened on the connecting portion 220 so that the connecting portion 220 is detachably connected to the top surface of the smoke collecting chamber 100 by screws or bolts; in other optional implementations, the connecting portion 220 can also be connected to the top surface of the smoke collecting chamber 100 by other methods such as bonding or clamping.

[0076] Furthermore, the shielding structure 200 further includes a partition 230 , and the partition 230 is disposed between the air inlet 120 and the side wall of the smoke collecting chamber 100 .

[0077] Through the above-mentioned structural form, the partition 230 separates the side wall of the smoke collecting chamber 100 from the air inlet 120, and minimizes the intersection of the airflow at the side wall of the smoke collecting chamber 100 and the smoke airflow at the air inlet 120 to form a vortex. The airflow vortex not only causes noise, but also creates resistance to the smoke airflow at the air inlet 120. Therefore, the setting of the partition 230 helps to reduce the airflow noise of the range hood and helps to increase the air volume.

[0078] like Figure 3 and Figure 4 As shown, the smoke collecting chamber 100 includes a first side wall 110 provided with a control panel 111 , and the partition 230 is provided between the air inlet 120 and the first side wall 110 .

[0079] The first side wall 110 provided with the control panel 111 has a more complex structure and a more irregular surface. The noise generated by the smoke airflow impacting the first side wall 110 is greater, and there is a risk that the smoke enters the control panel 111 and damages the control panel 111. By arranging the partition 230 between the air inlet 120 and the first side wall 110, the partition 230 can reduce the airflow noise while providing a certain degree of protection for the control panel 111.

[0080] Specifically, the first side wall 110 in the present embodiment is located on the side of the air inlet 120 away from the fan 300 in the width direction X of the range hood, thereby forming a semi-enclosed cavity between the top surface of the smoke collecting chamber 100, the first side wall 110 and the bottom surface of the smoke collecting chamber 100; along the width direction X of the range hood, the partition 230 and the filter part 210 in the shielding structure 200 are respectively arranged on both sides of the connecting part 220, wherein the partition 230 is close to the first side wall 110, and the filter part 210 is close to the fan 300, so that the shielding structure 200 covers the top of the air inlet 120. On the one hand, it can filter light and small objects through the filter part 210, and on the other hand, it can prevent the airflow at the first side wall 110 from merging with the airflow entering from the air inlet 120 to form a vortex through the partition 230.

[0081] In other optional embodiments, the partition 230 may also be disposed between the air inlet 120 and other side walls of the smoke collecting chamber 100 ; based on the change in the location of the partition 230 , the relative position between the partition 230 and the filter 210 may also be adaptively adjusted.

[0082] In this embodiment, the partition 230 is fixed to the top surface of the smoke collecting chamber 100 through the connecting portion 220 , and a gap is provided between the partition 230 and the bottom surface of the smoke collecting chamber 100 .

[0083] The partition 230 is installed in the smoke collecting chamber 100 through the connecting portion 220, and there is a gap between the partition 230 and the bottom surface of the smoke collecting chamber 100, which can prevent the partition 230 from interfering with the bottom surface of the smoke collecting chamber 100 or causing collision and deformation during installation.

[0084] Specifically, the height of the gap between the partition 230 and the bottom surface of the smoke collecting chamber 100 is h, and this embodiment selects h=5mm. In other optional embodiments, the height of the gap between the partition 230 and the bottom surface of the smoke collecting chamber 100 can also be set to any value below 3mm or 5mm according to actual assembly requirements.

[0085] In addition, there is a gap between the filter part 210 and the bottom surface of the smoke collecting chamber 100 to prevent the filter part 210 from coming into interference contact with the bottom surface of the smoke collecting chamber 100 or from being deformed by collision during the installation process.

[0086] In this embodiment, the shielding structure 200 is an integrally formed structure, which reduces the connection process between different parts, is easy to manufacture and has better structural strength.

[0087] like Figure 5 As shown, the connection part 220 in this embodiment is planar, and the filter part 210 and the partition part 230 extend from both sides of the connection part 220 respectively, so that the connection part 220 is easy to connect. Figure 1 In this embodiment, there are two air inlets 120, which are respectively located on both sides of the smoke collecting chamber 100 along the length direction Y. In order to ensure the connection strength and cover both air inlets 120, the length of the filter part 210 and the partition part 230 in this embodiment is the same as that of the connecting part 220. In other optional embodiments, along the length direction Y of the smoke collecting chamber 100, the filter part 210 and the partition part 230 can also be only arranged at the position of the air inlet 120 to save materials.

[0088] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A range hood, characterized in that: It comprises a smoke collecting chamber and a shielding structure, wherein the shielding structure is arranged inside the smoke collecting chamber, and an air inlet is arranged on the bottom surface of the smoke collecting chamber; The shielding structure at least includes a filter part and a connecting part, the filter part is provided with a plurality of ventilation holes, the filter part is arranged on the air inlet path of the air inlet and is located between the air inlet and the fan of the range hood, and one end of the filter part is fixed to the top surface of the smoke collecting chamber through the connecting part.

2. The range hood according to claim 1, characterized in that: The other end of the filter portion extends obliquely toward the bottom surface of the smoke collecting chamber; And / or, a projection of the filter portion in the height direction of the range hood covers the air inlet.

3. The range hood according to claim 2, characterized in that: The included angle between the filter portion and the top surface of the smoke collecting chamber is θ, and 20°≤θ≤60°.

4. The range hood according to claim 2, characterized in that: A gap is provided between the filter portion and the bottom surface of the smoke collecting chamber.

5. The range hood according to claim 1, characterized in that: The vent runs through the filter part from a side facing the air inlet to a side facing away from the air inlet, and the vent is in the shape of a waist-shaped hole; And / or, the plurality of ventilation openings are arranged sequentially along the first direction.

6. The range hood according to claim 1, characterized in that: The projection of the connecting portion in the height direction of the range hood does not overlap with the air inlet; And / or, a dimension of the connecting portion in the width direction of the range hood is d, 5mm≤d≤15mm.

7. The range hood according to claim 1, characterized in that: The shielding structure further includes a partition, and the partition is arranged between the air inlet and the side wall of the smoke collecting chamber.

8. The range hood according to claim 7, characterized in that: The smoke collecting chamber comprises a first side wall provided with a control panel, and the partition is arranged between the air inlet and the first side wall.

9. The range hood according to claim 7, characterized in that: The partition is fixed to the top surface of the smoke collecting chamber through the connecting portion, and a gap is provided between the partition and the bottom surface of the smoke collecting chamber.

10. The range hood according to any one of claims 1 to 9, characterized in that: The shielding structure is an integrally formed structure.

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