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 an oil guide structure. An air inlet is formed in the bottom surface of the smoke collecting cavity; the oil guide structure is arranged in the smoke collecting cavity, the oil guide structure obliquely extends upwards from the position close to the bottom surface of the smoke collecting cavity, and the projection of the oil guide structure in the height direction of the range hood at least partially covers the air inlet; the end, away from the bottom face of the smoke collecting cavity, of the oil guide structure is provided with an extending part, the side, facing the air inlet, of the extending part is provided with an arc face, the arc face extends in the height direction of the extractor hood, and the circle center of the arc face is located on the side, away from the air inlet, of the oil guide structure. Therefore, flue gas flow entering from the air inlet can impact the surface of the oil guide structure, oil drops in the gas flow can make contact with the surface of the oil guide structure and are attached to the surface of the oil guide structure, the oil drops which are continuously accumulated and gathered together can flow downwards along the oil guide structure which is obliquely arranged, collection is completed, and therefore the grease precipitation rate of the range hood is increased.

Description

Technical Field

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

[0002] Most of the cooking oil added during the cooking process is captured by the range hood in the form of small oil droplets along with the airflow generated by the range hood. The high-speed rotation of the fan impeller throws it onto the wall of the volute, and then flows downward along the wall into the oil collecting box, thereby precipitating the small oil droplets in the oil fume and preventing it from being discharged into the atmosphere and polluting the environment.

[0003] However, due to the limited distance between every two blades on the impeller, there are always some small oil droplets that can be exhausted from the range hood without contacting the impeller, resulting in a low grease precipitation rate of the range hood. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a range hood in order to overcome the defect of low grease precipitation rate of the range hood in the prior art.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A range hood, comprising a smoke collecting chamber and an oil guiding structure; an air inlet is provided on the bottom surface of the smoke collecting chamber; the oil guiding structure is arranged inside the smoke collecting chamber, and the oil guiding structure extends obliquely upward from a position close to the bottom surface of the smoke collecting chamber, and the projection of the oil guiding structure in the height direction of the range hood at least partially covers the air inlet; an extension portion is provided at one end of the oil guiding structure away from the bottom surface of the smoke collecting chamber, and an arc surface is provided on the side of the extension portion facing the air inlet, the arc surface extends in the height direction of the range hood, and the center of the arc surface is located on the side of the oil guiding structure away from the air inlet.

[0007] In the present embodiment, the oil guiding structure extends upwardly at an angle from a position close to the bottom surface of the smoke collecting chamber, and the projection of the oil guiding structure in the height direction of the range hood at least partially covers the air inlet, so that the smoke airflow entering the smoke collecting chamber from the air inlet will impact the surface of the oil guiding structure. During the impact process of the smoke airflow, small oil droplets in the airflow will contact and adhere to the surface of the oil guiding structure. As the small oil droplets continue to accumulate, the gathered oil droplets will flow downward along the inclined oil guiding structure to complete the collection. In this way, the oil guiding structure has already precipitated some oil and grease before the smoke airflow enters the fan, and the overall oil precipitation rate of the range hood is improved.

[0008] In addition, the end of the oil guiding structure away from the bottom of the smoke collecting chamber, which is also the terminal where the small oil droplets move upward along the oil guiding structure under the action of the smoke airflow, is provided with an extension portion at this end of the oil guiding structure, and the side of the extension portion facing the air inlet is provided with an arc surface, the arc surface extends in the height direction of the range hood, and the center of the arc surface is located on the side of the oil guiding structure away from the air inlet, so that the oil guiding structure has a transition section at this end instead of a sudden cut-off. Therefore, when the small oil droplets move to the arc surface of the extension portion, based on the Coanda effect, the small oil droplets can still move upward along the arc surface and will not directly drip due to the sudden cut-off of the terminal of the oil guiding structure. When the fan is turned off or when the small oil droplets gather and cause the gravity to be too large, the small oil droplets can move downward along the arc surface, making it easy to collect the small oil droplets in a unified manner, reducing the possibility of small oil droplets dripping directly from the end of the oil guiding structure away from the bottom of the smoke collecting chamber, avoiding small oil droplets from dripping or splashing from the air inlet, and improving user experience.

[0009] Preferably, the top surface of the smoke collecting cavity is connected to a fan cavity, and one end of the oil guiding structure away from the bottom surface of the smoke collecting cavity has a protrusion, and the protrusion extends to the inside of the fan cavity.

[0010] In the present solution, since the smoke gas flow will flow from the air inlet at the bottom of the smoke collecting chamber to the fan chamber at the top of the smoke collecting chamber, the protrusion of the oil guiding structure at the end away from the bottom of the smoke collecting chamber extends to the interior of the fan chamber, thereby increasing the extension length of the oil guiding structure. As a result, the path of the smoke gas flow along the oil guiding structure will be extended, and more small oil droplets can be contacted and adhered, thereby improving the grease precipitation rate of the oil guiding structure.

[0011] In addition, the oil guiding structure extends upward at an angle from a position close to the bottom surface of the smoke collecting chamber, and extends to the interior of the fan chamber at one end away from the bottom surface of the smoke collecting chamber, so that the oil guiding structure divides the space in the smoke collecting chamber, specifically, separates the side wall of the smoke collecting chamber from the air inlet, thereby preventing the smoke airflow flowing in from the air inlet from attracting the air in the irregular space at the side wall of the smoke collecting chamber to generate a vortex. The airflow vortex not only causes noise, but also generates resistance to the smoke airflow at the air inlet. Therefore, the setting of the oil guiding structure also helps to reduce the airflow noise of the range hood and helps to increase the air volume.

[0012] Preferably, the extending portion is arranged at an end portion of the protruding portion.

[0013] In the present solution, since the protrusion extends into the interior of the fan cavity and is located at the far end where the flue gas flows along the oil guide structure, the extension portion is arranged at the end of the protrusion, so that the role of the extension portion can be fully exerted and the process of arranging the extension portion at other positions of the oil guide structure is saved, thereby facilitating manufacturing.

[0014] Preferably, a fan is provided inside the fan cavity, and a projection of the protrusion in the height direction of the range hood at least partially covers the fan.

[0015] In the present solution, the flue gas flows into the fan cavity and eventually into the fan. By arranging the projection of the protrusion in the height direction of the range hood to at least partially cover the fan, the length of the protrusion is further extended, and the flue gas flow is prevented to the greatest extent from directly flowing into the fan without contacting the oil guide structure, thereby further improving the grease precipitation rate of the oil guide structure.

[0016] Preferably, a connection port is formed at the connection point between the smoke collecting chamber and the fan chamber, and the protrusion is spaced a predetermined distance from the inner peripheral wall of the connection port.

[0017] In this solution, the protrusion is prevented from contacting the connection port by the above-mentioned structural form, thereby preventing the airflow from causing the oil guide structure to vibrate and collide with the smoke collecting chamber or the fan chamber when the range hood is working, thereby preventing noise or damage.

[0018] Preferably, in the height direction of the range hood, the oil guiding structure is in an arc shape, and the center of the oil guiding structure is located on a side of the oil guiding structure close to the air inlet.

[0019] In the present solution, the oil guide structure, which extends obliquely upward and is arc-shaped in the height direction of the range hood, forms a relatively regular, gradually expanding flow channel with the bottom surface of the smoke collecting chamber. Compared with the original sudden flow channel of the smoke collecting chamber, the present solution can effectively reduce the flow resistance of the smoke airflow, increase the air volume, and increase the wind speed, thereby improving the rate and efficiency of the oil guide structure in capturing oil droplets.

[0020] Preferably, a gap is provided between one end of the oil guiding structure close to the bottom surface of the smoke collecting chamber and the bottom surface of the smoke collecting chamber.

[0021] In this solution, the above-mentioned structural form can prevent the oil guide structure from interfering with the bottom surface of the smoke collecting chamber or from deforming due to collision during installation or when the range hood is in operation. If the gap between the oil guide structure and the bottom surface of the smoke collecting chamber is too small, the ability to avoid contact will be weakened; if the gap is too large, the risk of smoke escaping from the gap without contacting the oil guide structure will increase, and the ability of the oil guide structure to separate the space in the smoke collecting chamber will also be weakened, so it is most appropriate to set the gap distance between 2mm and 5mm.

[0022] Preferably, the oil guiding structure is further connected to at least one connecting portion, and the oil guiding structure is fixed to the inner wall surface of the smoke collecting chamber through the connecting portion.

[0023] In this solution, the oil guide structure can be stably arranged in the smoke collecting chamber by setting the connecting part.

[0024] Preferably, the top surface of the smoke collecting chamber is connected to a fan chamber, and the end of the oil guiding structure away from the bottom surface of the smoke collecting chamber has a protrusion extending to the interior of the fan chamber; along the length direction of the range hood, the protrusion is located in the middle position of the oil guiding structure, and the number of the connecting parts is two, and the two connecting parts are respectively connected to both sides of the protrusion.

[0025] In this solution, the protrusion is located in the middle of the oil guide structure, and the two connecting parts are respectively connected to the two sides of the protrusion, so that the connection force of the oil guide structure is balanced, which is conducive to ensuring the connection stability of the oil guide structure.

[0026] Preferably, the bottom surface of the smoke collecting chamber is inclined in the height direction of the range hood, and the bottom of the bottom surface of the smoke collecting chamber in the height direction of the range hood is connected to an oil receiving box.

[0027] In the present solution, the bottom surface of the smoke collecting chamber is inclined in the height direction of the range hood, so as to directly shield the smoke generated directly below the smoke collecting chamber during cooking and suck it into the smoke collecting chamber; the bottom of the bottom surface of the smoke collecting chamber is connected to the oil collecting box, so that the oil droplets flow into the oil collecting box along the inclined bottom surface of the smoke collecting chamber under the action of gravity to complete the collection.

[0028] The positive and progressive effects of the utility model are:

[0029] In the utility model, the oil guiding structure extends upwardly at an angle from a position close to the bottom surface of the smoke collecting chamber, and the projection of the oil guiding structure in the height direction of the range hood at least partially covers the air inlet, so that the smoke airflow entering the smoke collecting chamber from the air inlet will impact the surface of the oil guiding structure. During the impact process of the smoke airflow, small oil droplets in the airflow will contact and adhere to the surface of the oil guiding structure. As the small oil droplets continue to accumulate, the gathered oil droplets will flow downward along the inclined oil guiding structure to complete the collection. In this way, the oil guiding structure has already precipitated some oil and grease before the smoke airflow enters the fan, and the overall oil precipitation rate of the range hood is improved.

[0030] In addition, the end of the oil guiding structure away from the bottom of the smoke collecting chamber, which is also the terminal where the small oil droplets move upward along the oil guiding structure under the action of the smoke airflow, is provided with an extension portion at this end of the oil guiding structure, and the side of the extension portion facing the air inlet is provided with an arc surface, the arc surface extends in the height direction of the range hood, and the center of the arc surface is located on the side of the oil guiding structure away from the air inlet, so that the oil guiding structure has a transition section at this end instead of a sudden cut-off. Therefore, when the small oil droplets move to the arc surface of the extension portion, based on the Coanda effect, the small oil droplets can still move upward along the arc surface and will not directly drip due to the sudden cut-off of the terminal of the oil guiding structure. When the fan is turned off or when the small oil droplets gather and cause the gravity to be too large, the small oil droplets can move downward along the arc surface, making it easy to collect the small oil droplets in a unified manner, reducing the possibility of small oil droplets dripping directly from the end of the oil guiding structure away from the bottom of the smoke collecting chamber, avoiding small oil droplets from dripping or splashing from the air inlet, and improving user experience. 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 The figure is a schematic cross-sectional view of a range hood according to a preferred embodiment of the present invention.

[0033] Figure 3 for Figure 2 Detailed enlarged structural diagram of part A.

[0034] Figure 4 The figure is a schematic diagram of the three-dimensional structure of the smoke collecting chamber according to a preferred embodiment of the utility model.

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

[0036] Figure 6 It is a side structural schematic diagram of the oil guide structure of a preferred embodiment of the utility model.

[0037] Figure 7 for Figure 6 Detailed enlarged structural diagram of part B.

[0038] Description of reference numerals:

[0039] Smoke chamber 100

[0040] Air Inlet 110

[0041] Front Panel 120

[0042] Back panel 130

[0043] Oil guide structure 200

[0044] Protrusion 210

[0045] Extension 220

[0046] Arc surface 221

[0047] Connecting part 230

[0048] Fan cavity 300

[0049] Fan 310

[0050] Entrance 311

[0051] Connection port 320

[0052] Oil box 400

[0053] Length direction X

[0054] Width direction Y

[0055] Height direction Z DETAILED DESCRIPTION

[0056] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0057] like Figure 1-Figure 7 As shown, this embodiment provides a range hood, which includes a smoke collecting chamber 100 and an oil guide structure 200. An air inlet 110 is provided on the bottom surface of the smoke collecting chamber 100, and the oil guide structure 200 is provided inside the smoke collecting chamber 100. The oil guide structure 200 extends obliquely upward from a position close to the bottom surface of the smoke collecting chamber 100, and the projection of the oil guide structure 200 in the height direction Z of the range hood at least partially covers the air inlet 110.

[0058] The oil guiding structure 200 extends upwardly at an angle from a position close to the bottom surface of the smoke collecting chamber 100, and the projection of the oil guiding structure 200 in the height direction Z of the range hood at least partially covers the air inlet 110, so that the upward-flowing smoke airflow entering the smoke collecting chamber 100 from the air inlet 110 will impact the surface of the oil guiding structure 200. During the impact process of the smoke airflow, small oil droplets in the airflow will contact and adhere to the surface of the oil guiding structure 200. As the small oil droplets continue to accumulate, the gathered oil droplets will flow downward along the inclined oil guiding structure 200 to complete the collection. In this way, the oil guiding structure 200 has already precipitated some oil before the smoke airflow enters the fan 310, and the overall oil precipitation rate of the range hood is improved.

[0059] It can be understood that after the smoke flow hits the surface of the oil guide structure 200, it will flow obliquely upward along the surface of the oil guide structure 200. The longer the oil guide structure 200 is, the more grease can be precipitated. In addition, the more comprehensive the shielding of the air inlet 110 by the oil guide structure 200 is, the more oil droplets can be captured. When the oil guide structure 200 extends obliquely upward and the projection in the height direction Z can cover the air inlet 110, the longer the oil guide structure 200 is, the more comprehensive the shielding of the air inlet 110 is. Therefore, in this embodiment, the extension length of the oil guide structure 200 is preferably such that the projection of the oil guide structure 200 in the height direction Z of the range hood completely covers the air inlet 110, so as to obtain a better grease precipitation effect. In other optional embodiments, the projection of the oil guide structure 200 in the height direction Z can also be adjusted to partially cover the air inlet 110 according to actual needs.

[0060] Furthermore, the top surface of the smoke collecting chamber 100 is connected to the fan chamber 300 , and the end of the oil guide structure 200 away from the bottom surface of the smoke collecting chamber 100 has a protrusion 210 , and the protrusion 210 extends to the inside of the fan chamber 300 .

[0061] Since the smoke flow will flow from the air inlet 110 on the bottom surface of the smoke collecting chamber 100 to the fan chamber 300 on the top surface of the smoke collecting chamber 100, the protrusion 210 of the oil guiding structure 200 at the end away from the bottom surface of the smoke collecting chamber 100 extends to the inside of the fan chamber 300, further increasing the extension length of the oil guiding structure 200. As a result, the path of the smoke flow along the oil guiding structure 200 will be longer, and more small oil droplets can be contacted and adhered, thereby improving the grease precipitation rate of the oil guiding structure 200.

[0062] Furthermore, a fan 310 is disposed inside the fan cavity 300 , and a projection of the protrusion 210 in the height direction Z of the range hood at least partially covers the fan 310 .

[0063] The smoke flow flows into the fan chamber 300 and eventually flows into the fan 310. By arranging the projection of the protrusion 210 in the height direction Z of the range hood to at least partially cover the fan 310, the length of the protrusion 210 is further extended, and the smoke flow is prevented to the greatest extent from not contacting the oil guide structure 200 and directly flowing into the fan 310, thereby further improving the grease precipitation rate of the oil guide structure 200.

[0064] Specifically, if Figure 1-Figure 3As shown, the smoke collecting chamber 100 in this embodiment is generally close to a cubic shape, and along the width direction Y of the smoke collecting chamber 100, the oil guide structure 200 extends from a position close to the front panel 120 toward the direction of the rear back panel 130. As the oil guide structure 200 extends obliquely upward from a position close to the bottom surface of the smoke collecting chamber 100, the oil guide structure 200 (projection) blocks the air inlet 110, gradually extends to the top surface of the smoke collecting chamber 100, and finally extends into the fan chamber 300.

[0065] In this embodiment, the inlet 311 of the fan 310 is located on the side of the fan 310 facing the rear panel 130, and the projection 210 continues to extend upward from the position of entering the fan cavity 300, and the projection in the height direction Z of the range hood partially covers the fan 310, so that the oil guide structure 200 is more conducive to guiding the smoke to the position of the rear panel 130 and then enter the inlet 311 of the fan 310. In other optional embodiments, the inlet 311 of the fan 310 can also be set on the side of the fan 310 facing the front panel 120, and the projection of the projection 210 in the height direction Z of the range hood partially covers the fan 310, which can also form a certain obstruction to the flow path of the smoke entering the fan cavity 300 and capture more oil droplets.

[0066] In other optional embodiments, when the inlet 311 of the fan 310 is located on the side of the fan 310 facing the back panel 130, the projection of the protrusion 210 in the height direction Z of the range hood can also be arranged to completely cover the fan 310, so that the oil guide structure 200 directly guides the smoke flow into the inlet 311 of the fan 310. At this time, the protrusion 210 can also form a certain obstruction to the smoke flow path entering the inlet 311 of the fan 310, thereby capturing more oil droplets.

[0067] Of course, in order to ensure that the air inlet 110 is shielded, in the length direction X of the smoke collecting chamber 100 , the length of the oil guiding structure 200 is the same as or at least close to the length of the smoke collecting chamber 100 .

[0068] In addition, since the oil guide structure 200 extends upwardly from a position close to the bottom surface of the smoke collecting chamber 100 and the end away from the bottom surface of the smoke collecting chamber 100 extends to the inside of the fan chamber 300, the oil guide structure 200 not only has a role in precipitating grease, but also divides the space in the smoke collecting chamber 100, such as Figure 2 and Figure 3 As shown, the oil guide structure 200 separates the front panel 120 of the smoke collecting chamber 100 from the air inlet 110, preventing the smoke flow flowing in from the air inlet 110 from attracting the air in the irregular space at the front panel 120 to generate a vortex. The air flow vortex not only causes noise, but also creates resistance to the smoke flow at the air inlet 110. Therefore, the setting of the oil guide structure 200 also helps to reduce the airflow noise of the range hood and helps to increase the air volume.

[0069] It can be understood that the extension length of the oil guide structure 200 and the extension along the width direction Y of the smoke collecting chamber 100 in this embodiment are both preferred solutions. In other optional implementations, the oil guide structure 200 can also select other suitable extension lengths and extension directions according to the specific structure of the smoke collecting chamber 100.

[0070] like Figure 3 As shown, in this embodiment, an extension portion 220 is provided at one end of the oil guide structure 200 away from the bottom surface of the smoke collecting chamber 100, and an arc surface 221 is provided on the side of the extension portion 220 facing the air inlet 110. The arc surface 221 extends in the height direction Z of the range hood, and the center of the arc surface 221 is located on the side of the oil guide structure 200 away from the air inlet 110.

[0071] The end of the oil guiding structure 200 away from the bottom of the smoke collecting chamber 100, that is, the terminal where the small oil droplets move upward along the oil guiding structure 200 under the action of the smoke airflow, is provided with the extension part 220 as described above, so that the oil guiding structure 200 has a transition section at this end instead of a sudden cut-off. Thus, when the small oil droplets move to the arc surface 221 of the extension part 220, based on the Coanda effect, the small oil droplets can still move upward along the arc surface 221 instead of directly dripping due to the sudden cut-off of the terminal of the oil guiding structure 200. When the fan 310 is turned off or when the small oil droplets gather and cause the gravity to be too large, the small oil droplets can move downward along the arc surface 221, so that the small oil droplets are easy to collect uniformly, reducing the possibility of small oil droplets dripping directly from the end of the bottom of the oil guiding structure 200 away from the smoke collecting chamber 100, avoiding small oil droplets from dripping or splashing from the air inlet 110, and improving the user experience.

[0072] Specifically, Figure 6 and Figure 7 As shown, the extension portion 220 is disposed at the end of the protrusion 210 .

[0073] Since the protrusion 210 extends to the interior of the fan cavity 300, the protrusion 210 is located at the far end where the smoke flow flows along the oil guide structure 200. The extension portion 220 is arranged at the end of the protrusion 210, so that the function of the extension portion 220 can be fully exerted, and the process of setting the extension portion 220 at other positions of the oil guide structure 200 is saved, which facilitates manufacturing.

[0074] In this embodiment, the radius r of the arc surface 221 is set to r=5 mm, and the height h thereof protruding from the end of the oil guide structure 200 is set to h=5 mm. In other optional embodiments, the radius r of the arc surface 221 and the height h thereof protruding from the end of the oil guide structure 200 can be set to any value less than 5 mm (greater than 0 mm).

[0075] like Figure 3 and Figure 6 As shown, in this embodiment, in the height direction Z of the range hood, the oil guiding structure 200 is in an arc shape, and the center of the oil guiding structure 200 is located on a side of the oil guiding structure 200 close to the air inlet 110 .

[0076] The oil guiding structure 200, which extends obliquely upward and is in an arc shape in the height direction Z of the range hood, forms a relatively regular, gradually expanding flow channel with the bottom surface of the smoke collecting chamber 100. Compared with the original sudden flow channel of the smoke collecting chamber 100, this solution can effectively reduce the flow resistance of the smoke airflow, increase the air volume, and increase the wind speed, thereby improving the rate and efficiency of the oil guiding structure 200 in capturing oil droplets.

[0077] In other optional embodiments, the oil guiding structure 200, or the surface of the oil guiding structure 200 facing the air inlet 110, may also be configured to have an irregular arc shape with undulations.

[0078] In addition, there is a gap between one end of the oil guide structure 200 close to the bottom surface of the smoke collecting chamber 100 and the bottom surface of the smoke collecting chamber 100 . The distance of the gap is d. In this embodiment, d=5 mm is selected.

[0079] The above structure can prevent the oil guide structure 200 from being in interference contact or deformed by collision with the bottom surface of the smoke collecting chamber 100 during installation or when the range hood is in operation. If the gap between the oil guide structure 200 and the bottom surface of the smoke collecting chamber 100 is too small, the ability to avoid contact will be weakened. Therefore, in this embodiment, d=5mm is selected to ensure that the oil guide structure 200 and the bottom surface of the smoke collecting chamber 100 do not touch each other.

[0080] If the gap between one end of the oil guiding structure 200 close to the bottom of the smoke collecting chamber 100 and the bottom of the smoke collecting chamber 100 is too large, the risk of smoke escaping from the gap without contacting the oil guiding structure 200 will increase, and the ability of the oil guiding structure 200 to separate the space in the smoke collecting chamber 100 will also be weakened. Therefore, in other optional embodiments, the distance d of the gap can also be set to 2 mm.

[0081] In other optional embodiments, the gap distance d may also be set to 3 mm to balance the need to avoid collision between the oil guiding structure 200 and the bottom surface of the smoke collecting chamber 100 and the need to ensure that the oil guiding structure 200 separates the space in the smoke collecting chamber 100 .

[0082] Of course, in practice, the specific value of d is not limited to the above three examples, and any value between 2 mm and 5 mm is acceptable.

[0083] Furthermore, if Figure 4As shown, the connection point of the smoke collecting chamber 100 and the fan chamber 300 forms a connection port 320, and the protrusion 210 is spaced a predetermined distance from the inner peripheral wall of the connection port 320. Therefore, on the basis of ensuring that there is enough flow area of ​​smoke airflow at the connection port, the protrusion 210 and the connection port 320 do not contact each other, so as to prevent the oil guide structure 200 from vibrating due to the airflow when the range hood is working and colliding with the smoke collecting chamber 100 or the fan chamber 300, thereby generating noise or damage.

[0084] In addition, if Figure 5 and Figure 6 As shown, the oil guiding structure 200 is further connected to at least one connecting portion 230 , and the oil guiding structure 200 is fixed to the inner wall surface of the smoke collecting chamber 100 via the connecting portion 230 .

[0085] Specifically, in this embodiment, along the length direction X of the range hood, the protrusion 210 is located in the middle position of the oil guide structure 200, and there are two connecting parts 230. The two connecting parts 230 are respectively connected to the two sides of the protrusion 210 to balance the connection force of the oil guide structure 200, which is beneficial to ensure the connection stability of the oil guide structure 200.

[0086] In this embodiment, two connecting parts 230 are connected to the top surface of the smoke collecting chamber 100 by screws. In other optional embodiments, the connecting parts 230 may also be connected by other connection methods such as snap connection and bonding; the setting position of the connecting parts 230 and the connection position with the smoke collecting chamber 100 may be adjusted according to actual conditions.

[0087] Furthermore, the bottom surface of the smoke collecting chamber 100 is inclined in the height direction Z of the range hood, and the bottom of the bottom surface of the smoke collecting chamber 100 in the height direction Z of the range hood is connected to the oil receiving box 400 .

[0088] In the height direction Z of the range hood, the bottom surface of the smoke collecting chamber 100 is inclined, so as to directly shield the smoke generated directly below the smoke collecting chamber 100 during cooking and suck it into the smoke collecting chamber 100; the bottom of the bottom surface of the smoke collecting chamber 100 is connected to the oil collecting box 400, so that after the oil droplets slide down from the oil guide structure 200 under the action of gravity, they can flow into the oil collecting box 400 along the inclined bottom surface of the smoke collecting chamber 100 to complete collection.

[0089] 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 includes a smoke collecting chamber and an oil guiding structure; The bottom surface of the smoke collecting chamber is provided with an air inlet; The oil guide structure is arranged inside the smoke collecting chamber, and the oil guide structure extends obliquely upward from a position close to the bottom surface of the smoke collecting chamber, and the projection of the oil guide structure in the height direction of the range hood at least partially covers the air inlet; An extension portion is provided at one end of the oil guide structure away from the bottom surface of the smoke collecting chamber, and an arc surface is provided on the side of the extension portion facing the air inlet. The arc surface extends in the height direction of the range hood, and the center of the arc surface is located on the side of the oil guide structure away from the air inlet.

2. The range hood according to claim 1, characterized in that: The top surface of the smoke collecting cavity is connected with a fan cavity, and one end of the oil guide structure away from the bottom surface of the smoke collecting cavity has a protrusion, and the protrusion extends to the inside of the fan cavity.

3. The range hood according to claim 2, characterized in that: The extending portion is disposed at an end portion of the protruding portion.

4. The range hood according to claim 2, characterized in that: A fan is arranged inside the fan cavity, and a projection of the protrusion in the height direction of the range hood at least partially covers the fan.

5. The range hood according to claim 2, characterized in that: A connection port is formed at the connection point between the smoke collecting chamber and the fan chamber, and a predetermined distance is provided between the protruding portion and the inner peripheral wall of the connection port.

6. The range hood according to claim 1, characterized in that: In the height direction of the range hood, the oil guiding structure is in an arc shape, and the center of the oil guiding structure is located on a side of the oil guiding structure close to the air inlet.

7. The range hood according to claim 1, characterized in that: A gap is formed between one end of the oil guide structure close to the bottom surface of the smoke collecting chamber and the bottom surface of the smoke collecting chamber.

8. The range hood according to claim 1, characterized in that: The oil guide structure is further connected to at least one connecting portion, and the oil guide structure is fixed to the inner wall surface of the smoke collecting chamber through the connecting portion.

9. The range hood according to claim 8, characterized in that: The top surface of the smoke collecting cavity is connected to a fan cavity, and one end of the oil guide structure away from the bottom surface of the smoke collecting cavity has a protrusion extending into the interior of the fan cavity; Along the length direction of the range hood, the protrusion is located in the middle of the oil guide structure, and the number of the connecting parts is two, and the two connecting parts are respectively connected to the two sides of the protrusion.

10. The range hood according to claim 1, characterized in that: The bottom surface of the smoke collecting chamber is inclined in the height direction of the range hood, and the bottom of the bottom surface of the smoke collecting chamber in the height direction of the range hood is connected to an oil receiving box.

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