Smoke collecting hood smoke barrier and range hood

Abstract

The utility model relates to the technical field of extractor hoods, in particular to an exhaust fume collecting hood smoke barrier and an extractor hood. The smoke collecting hood smoke barrier comprises a smoke barrier body and a flow guide part. The front side of the smoke barrier body faces the smoke inlet of the smoke collecting hood, and airflow turns at the front end of the smoke barrier body when entering the smoke collecting hood through the smoke inlet. The flow guide part is arranged on the side, facing the interior of the smoke collecting hood, of the smoke barrier body, a flow guide face is formed on the side, deviating from the smoke barrier body, of the flow guide part, the edge of one side of the flow guide face extends to the edge of the front side of the smoke barrier body, and the other side of the flow guide face extends towards the rear side of the smoke collecting hood and gradually inclines upwards. Therefore, when passing through the front side of the smoke barrier main body and turning backwards, the airflow flows along the flow guide surface which is inclined upwards, so that the turning direction of the airflow is guided through the flow guide surface, airflow turbulence caused by low-speed eddy current formed at the front end of the smoke barrier main body when the airflow turns is avoided, and the smoke suction effect of the range hood is ensured; and abnormal sound is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and in particular to a smoke baffle plate of a smoke collecting hood and a range hood. Background Art

[0002] With the improvement of people's quality of life, range hoods have become an indispensable appliance in the kitchen. They are usually installed above the kitchen stove to quickly exhaust the fumes generated during the cooking process.

[0003] The smoke hood of a range hood generally includes a smoke baffle and a flap. When the range hood is working, the flap can be flipped to open the smoke inlet of the range hood, so that the smoke can enter the smoke hood under the guidance of the smoke baffle. However, currently when the smoke passes through the smoke baffle and enters the smoke hood, a low-speed vortex is formed at the end of the smoke baffle, thereby causing airflow turbulence, reducing the smoke extraction effect of the range hood, and generating abnormal noise. Utility Model Content

[0004] The utility model aims to provide a smoke baffle for a smoke collecting hood, so as to avoid, to a certain extent, turbulence of airflow when entering the smoke collecting hood through the smoke baffle, thereby ensuring the smoke extraction effect of the range hood and avoiding abnormal noise.

[0005] The utility model provides a smoke shield for a smoke collecting hood, comprising a smoke shield main body;

[0006] The side of the smoke baffle body facing the smoke inlet of the smoke hood is the front side of the smoke baffle body, and the side of the smoke baffle body facing the inside of the smoke hood is provided with a guide member;

[0007] A side of the smoke baffle body that is away from the flow guide member forms a flow guide surface, one side edge of the flow guide surface extends to the front side edge of the smoke baffle body, and the other side of the flow guide surface extends backward and gradually tilts upward.

[0008] Furthermore, the guide member is integrally formed at the front edge of the smoke baffle body;

[0009] Alternatively, the flow guide is bonded to the smoke baffle body via a connecting plate.

[0010] Furthermore, the guide member is in the shape of an airfoil, a teardrop, or a plate-like structure bent in at least a quarter arc shape.

[0011] Furthermore, a backflow prevention fin is provided on one side of the guide surface away from the front edge of the smoke baffle body, one end of the backflow prevention fin is connected to the guide surface, and the other end of the backflow prevention fin extends backward and gradually tilts upward.

[0012] Furthermore, the windward surface of the backflow prevention fin is in an arched arc shape.

[0013] Furthermore, there are multiple backflow prevention fins, and the multiple backflow prevention fins are arranged at intervals from front to rear.

[0014] Further, the extension direction of the front side edge of the smoke deflector body is a first direction, and the smoke deflector body is provided with a plurality of flow guides, and the plurality of flow guides are arranged at intervals along the first direction.

[0015] Further, the length of the front side edge of the smoke baffle body in the first direction is L, the length of the air guide member in the first direction is d, and 0.1L≤d≤0.4L.

[0016] Further, the length of the flow guide member in the first direction is d, the interval between two adjacent flow guide members is h, and 0.2d≤h≤0.3d.

[0017] The utility model also provides a range hood, comprising any one of the above-mentioned smoke collecting hood and smoke baffle plates.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The smoke baffle of the smoke hood provided by the utility model comprises a smoke baffle body and a guide member arranged on the smoke baffle body. The smoke baffle body has opposite front and rear sides, and the smoke baffle body is used to be arranged below the smoke hood of the range hood, the rear side of the smoke baffle body faces the rear side of the smoke hood and is connected to the outer shell of the smoke hood, and the front side of the smoke baffle body faces the front side of the smoke hood and forms a smoke inlet of the smoke hood between the outer shell of the smoke hood. The smoke hood is provided with a flap at the smoke inlet, and the flap can be flipped to open or close the smoke inlet; when the flap is flipped to open the smoke inlet, under the action of the fan of the range hood, the oil fume airflow below the smoke hood can enter the smoke hood through the smoke inlet, and the airflow will turn to the rear of the smoke baffle body at the front side of the smoke baffle body, and then flow upward into the smoke collecting cavity of the smoke hood.

[0020] The guide member is arranged on the side of the smoke baffle body facing the inside of the smoke hood, that is, the guide member is located above the smoke baffle body, and a guide surface is formed on the side of the guide member facing away from the smoke baffle body, one edge of the guide surface extends to the front edge of the smoke baffle body, and the other side of the guide surface extends to the rear side of the smoke hood and gradually tilts upward; that is, the guide surface is inclined, the side of the guide surface facing the front side of the smoke hood is the front side of the guide surface, the side of the guide surface facing the rear side of the smoke hood is the rear side of the guide surface, the rear side of the guide surface is higher than the front side of the guide surface, and the front edge of the guide surface extends to the front edge of the smoke baffle body.

[0021] Therefore, when the airflow turns backward after passing through the front side of the smoke baffle body, the airflow will flow along the guide surface inclined upward to guide the turning of the airflow through the guide surface, thereby avoiding the formation of low-speed vortex at the front end of the smoke baffle body when the airflow turns and causing airflow flow disorder, thereby ensuring the smoke extraction effect of the range hood and avoiding the generation of abnormal noise.

[0022] The utility model also provides a range hood, comprising the above-mentioned smoke collecting hood and smoke baffle, so the range hood also has the beneficial effects of the smoke collecting hood and smoke baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of the smoke shield of the smoke collecting hood provided by the embodiment of the utility model on the range hood from a first viewing angle;

[0025] Figure 2 A schematic structural diagram of a flow guide member of a smoke baffle of a smoke collecting hood provided in an embodiment of the utility model;

[0026] Figure 3 Another structural schematic diagram of the flow guide member of the smoke baffle of the smoke collecting hood provided in an embodiment of the utility model;

[0027] Figure 4 A schematic diagram of the structure of the smoke deflector of the smoke hood provided by the embodiment of the utility model with anti-backflow fins;

[0028] Figure 5 A schematic diagram of multiple flow guides of a smoke baffle of a smoke collecting hood provided in an embodiment of the utility model.

[0029] Reference numerals:

[0030] 1-smoke collecting hood, 2-smoke baffle body, 3-flap, 4-flow guide, 41-connecting plate, 42-backflow prevention fin, a-first direction. DETAILED DESCRIPTION

[0031] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0032] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0033] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Refer to the following Figures 1 to 5 A smoke baffle plate for a smoke hood and a range hood according to some embodiments of the present application are described.

[0037] The present application provides a smoke shield for a smoke collecting hood, such as Figure 1 As shown, the smoke baffle of the smoke collecting hood includes a smoke baffle body 2 and a flow guide 4 arranged on the smoke baffle body 2.

[0038] The smoke baffle body 2 has opposite front and rear sides. The smoke baffle body 2 is used to be arranged below the smoke hood 1 of the range hood. The rear side of the smoke baffle body 2 faces the rear side of the smoke hood 1 and is connected to the outer shell of the smoke hood 1. The front side of the smoke baffle body 2 faces the front side of the smoke hood 1 and forms a smoke inlet of the smoke hood 1 between the outer shell of the smoke hood 1. The smoke hood 1 is provided with a flap 3 at the smoke inlet, and the flap 3 can be flipped to open or close the smoke inlet; when the flap 3 is flipped to open the smoke inlet, under the action of the fan of the range hood, the oil smoke airflow below the smoke hood 1 can enter the smoke hood 1 through the smoke inlet, and the airflow will turn to the rear of the smoke baffle body 2 at the front side of the smoke baffle body 2, and then flow upward into the smoke collecting cavity of the smoke hood 1.

[0039] The guide member 4 is arranged on the side of the smoke baffle body 2 facing the inside of the smoke hood 1, that is, the guide member 4 is located above the smoke baffle body 2, and a guide surface is formed on the side of the guide member 4 facing away from the smoke baffle body 2, one side edge of the guide surface extends to the front edge of the smoke baffle body 2, and the other side of the guide surface extends to the rear side of the smoke hood 1 and gradually tilts upward; that is, the guide surface is inclined, the side of the guide surface facing the front side of the smoke hood 1 is the front side of the guide surface, the side of the guide surface facing the rear side of the smoke hood 1 is the rear side of the guide surface, the rear side of the guide surface is higher than the front side of the guide surface, and the front side edge of the guide surface extends to the front side edge of the smoke baffle body 2.

[0040] Therefore, when the airflow turns backward after passing through the front side of the smoke baffle body 2, the airflow will flow along the guide surface inclined upward to guide the turning of the airflow through the guide surface, thereby avoiding the formation of low-speed vortex at the front end of the smoke baffle body 2 when the airflow turns and causing airflow flow disorder, thereby ensuring the smoking effect of the range hood and avoiding the generation of abnormal noise.

[0041] In this embodiment, preferably, the flow guiding surface is an inclined straight surface, or the flow guiding surface is an upwardly arched arc surface.

[0042] By making the guide surface inclined and arched upward, the flow resistance of the airflow when passing through the guide member 4 can be reduced to a certain extent, and the impact of the airflow on the guide member 4 can be reduced to avoid the generation of abnormal noise. At the same time, it can also further avoid the airflow from being turbulent at the front end of the smoke baffle body 2 and affecting the smoking effect of the range hood.

[0043] Further preferably, the guide member 4 is in an overall airfoil shape, a teardrop shape, or a plate-like structure that is curved in at least a quarter arc shape.

[0044] Figure 2 The guide member 4 is a plate-shaped structure that is bent in the shape of at least 1 / 4 of a circle. Figure 3 A teardrop-shaped flow guide 4 is shown.

[0045] In one embodiment of the present application, preferably, Figure 4 As shown, the guide surface of the guide member 4 is also provided with a backflow prevention fin 42. Specifically, the backflow prevention fin 42 is provided on the side of the guide surface away from the front edge of the smoke baffle body 2, that is, the backflow prevention fin 42 is located on the rear side of the guide surface, and the backflow prevention fin 42 is also inclined, so that one end of the backflow prevention fin 42 is connected to the guide surface, and the other end of the backflow prevention fin 42 extends backward and upward.

[0046] Further preferably, a plurality of backflow prevention fins 42 are provided on the guide surface, and the plurality of backflow prevention fins 42 are sequentially spaced from front to back.

[0047] By providing an inclined anti-backflow fin 42 on the rear side of the guide surface, backflow due to a change in pressure gradient when the airflow passes through the guide member 4 can be avoided, so that the airflow passes through the guide member 4 smoothly and abnormal noise is avoided.

[0048] In this embodiment, preferably, the windward surface of the backflow prevention fin 42 is in an arched arc shape, so as to reduce the flow resistance of the backflow prevention fin 42 to the airflow, so that the airflow can pass through the guide member 4 smoothly.

[0049] Further preferably, the curvature of the arcuate windward surface of the anti-backflow fin 42 is consistent with the curvature of the arcuate guide surface of the guide member 4, so as to effectively prevent the backflow of the airflow due to the change of pressure gradient when passing through the guide member 4, and avoid the generation of abnormal noise.

[0050] In one embodiment of the present application, preferably, regarding the connection between the smoke baffle body 2 and the guide member 4 , the guide member 4 is formed integrally at the front edge of the smoke baffle body 2 .

[0051] Or, if Figure 5 As shown, the guide member 4 is provided with a connecting plate 41, and the guide member 4 is connected to the smoke baffle body 2 through the connecting plate 41; for example, the guide member 4 is bonded to the smoke baffle body 2 through the connecting plate 41, so that the smoke baffle body 2 made of glass and the guide member 4 with the connecting plate 41 made of metal (for example, stainless steel or aluminum) can be processed separately, and then the two can be assembled, thereby making the processing simpler and assembling easier, and the guide member 4 can also be retrofitted to the smoke baffle of the existing range hood.

[0052] In this embodiment, preferably, the flow guide 4 and the connecting plate 41 are integrally formed.

[0053] In one embodiment of the present application, preferably, the front side edge of the smoke shield body 2 has an extension direction along the first direction a, and a plurality of guide members 4 are provided on the smoke shield body 2 at intervals along the first direction a, so that the plurality of guide members 4 guide the airflow passing through the front end of the smoke shield body 2, thereby avoiding airflow turbulence at the front end of the smoke shield body 2.

[0054] Of course, the air guide 4 may also be an integral body with a relatively large length, so that it can extend from one side of the front edge of the smoke baffle body 2 to the other side.

[0055] In this embodiment, preferably, for a plurality of spaced-apart guide members 4, each guide member 4 is bonded to the smoke baffle body 2 via its own connecting plate 41; or, a plurality of guide members 4 are connected to the same connecting plate 41 and bonded to the smoke baffle body 2 via the connecting plate 41.

[0056] In this embodiment, preferably, for a plurality of flow guides 4 arranged at intervals, the length of each flow guide 4 in the first direction a is d, the length of the front edge of the smoke baffle body 2 in the first direction a is L, d and L satisfy: 0.1L≤d≤0.4L; the spacing between two adjacent flow guides 4 in the first direction a is h, h and d satisfy: 0.2d≤h≤0.3d. Thus, the plurality of flow guides 4 can work together to guide the airflow passing through the front end of the smoke baffle body 2, and avoid turbulence of the airflow at the front end of the smoke baffle body 2.

[0057] The present application also provides a range hood, comprising the smoke baffle of the smoke collecting hood of any of the above embodiments.

[0058] In this embodiment, the range hood includes a smoke collecting hood and a smoke shield, so the range hood has all the beneficial effects of the smoke collecting hood and the smoke shield, which will not be described in detail here.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A smoke shield for a smoke collecting hood, characterized in that: It comprises a smoke baffle body (2); The side of the smoke baffle body (2) facing the smoke inlet of the smoke collecting hood (1) is the front side of the smoke baffle body (2), and the side of the smoke baffle body (2) facing the inside of the smoke collecting hood (1) is provided with a flow guide (4); The side of the guide member (4) facing away from the smoke baffle body (2) forms a guide surface, one side edge of the guide surface extends to the front side edge of the smoke baffle body (2), and the other side of the guide surface extends backward and gradually tilts upward.

2. The smoke shield of the smoke collecting hood according to claim 1, characterized in that: The flow guide (4) is integrally formed at the front edge of the smoke baffle body (2); Alternatively, the flow guide (4) is bonded to the smoke baffle body (2) via a connecting plate (41).

3. The smoke shield of the smoke collecting hood according to claim 1, characterized in that: The flow guide (4) is in the form of an airfoil, a teardrop, or a plate-like structure bent in at least a quarter arc shape.

4. The smoke shield of the smoke collecting hood according to claim 1, characterized in that: A backflow prevention fin (42) is provided on one side of the guide surface away from the front edge of the smoke baffle body (2), one end of the backflow prevention fin (42) is connected to the guide surface, and the other end of the backflow prevention fin (42) extends backward and gradually tilts upward.

5. The smoke shield of the smoke collecting hood according to claim 4, characterized in that: The windward surface of the backflow prevention fin (42) is in an arched arc shape.

6. The smoke shield of the smoke collecting hood according to claim 4, characterized in that: The number of the backflow prevention fins (42) is multiple, and the multiple backflow prevention fins (42) are arranged at intervals from front to rear.

7. The smoke shield of the smoke collecting hood according to claim 1, characterized in that: The extension direction of the front side edge of the smoke baffle body (2) is a first direction (a), and the smoke baffle body (2) is provided with a plurality of guide members (4), and the plurality of guide members (4) are arranged at intervals along the first direction (a).

8. The smoke shield of the smoke collecting hood according to claim 7, characterized in that: The length of the front edge of the smoke baffle body (2) in the first direction (a) is L, the length of the flow guide (4) in the first direction (a) is d, and 0.1L≤d≤0.4L.

9. The smoke shield of the smoke collecting hood according to claim 7, characterized in that: The length of the flow guide (4) in the first direction (a) is d, the distance between two adjacent flow guides (4) is h, and 0.2d≤h≤0.3d.

10. A range hood, characterized in that: The smoke shield of the smoke collecting hood comprises the smoke shield of any one of claims 1 to 9.

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