Guide plate assembly for range hood and range hood

Abstract

The flow guide plate assembly is arranged in an exhaust fume collecting hood of the range hood and comprises a left flow guide plate, a right flow guide plate and a middle flow guide plate connected between the left flow guide plate and the right flow guide plate, and ventilation holes are formed in the middle flow guide plate. And the left guide plate, the right guide plate and the middle guide plate are integrated. The utility model has the advantages that the integrated structural design is adopted, so that the three components are not required to be welded and can be formed by bending or stretching. According to the integrated flow guide plate assembly, the types of parts are reduced, the material utilization rate is increased, the part material and material management cost is reduced, the part machining procedure is simplified, automatic production is facilitated, turnover transportation is facilitated, and the manufacturing cost and turnover transportation cost of the parts are reduced. And on the other hand, the three parts are combined into one part, so that the mold opening cost is reduced, the cost is reduced, and meanwhile, the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a deflector assembly for a range hood and a range hood. Background Art

[0002] A range hood is a kitchen appliance for purifying the kitchen environment. The range hood works based on the principle of fluid dynamics. It sucks and exhausts oil fumes through a centrifugal fan installed inside the range hood, and uses a filter screen to filter some oil particle. The centrifugal fan includes a volute, an impeller installed in the volute, and a motor for driving the impeller to rotate. When the impeller rotates, a negative pressure suction is generated at the center of the fan, sucking the oil fumes below the range hood into the fan, and after being accelerated by the fan, they are collected and guided by the volute to be discharged outdoors.

[0003] In order to improve the oil fume suction effect, in the existing range hoods, especially the near-suction range hoods, corresponding deflectors are arranged inside the lower box body for guiding. For example, a left deflector and a right deflector are correspondingly arranged on the left and right sides of the lower left box body. For example, a Chinese utility model patent application with the application number CN202122574231.1 (the authorized publication number: CN216790286U) discloses a range hood, which includes a smoke collecting hood and a fan frame arranged above the smoke collecting hood. A fan system is arranged inside the fan frame. The smoke collecting hood includes a top plate, a left side plate and a right side plate arranged at intervals left and right. The top plate is connected between the tops of the left side plate and the right side plate. The lower end of the fan frame passes through the top plate. The range hood further includes a deflector assembly, and the deflector assembly includes two first deflectors, one of the first deflectors extends between the lower left end of the fan frame and the left side plate, and the other first deflector extends between the lower right end of the fan frame and the right side plate.

[0004] However, the range hood in the above patent application still has certain deficiencies. Most of the deflector components in the above range hood are of a split structure, and the components need to be assembled by screw connection. It involves a wide variety of materials, complex processing procedures, and the manufacturing sites of each part are separated, occupying more turnover and transportation resources. The costs of part materials, management and manufacturing are also relatively high. Summary of the Utility Model

[0005] The first technical problem to be solved by the utility model is to provide a deflector assembly for a range hood that can effectively simplify the types of parts and processing procedures, facilitate turnover and transportation, and reduce production costs, in view of the current situation of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide a range hood applying the above deflector assembly, in view of the current situation of the prior art.

[0007] The technical solution adopted by the present utility model to solve the first technical problem is as follows: A deflector assembly for a range hood, which is arranged in the smoke collecting hood of the range hood, includes a left deflector, a right deflector, and an intermediate deflector connected between the left deflector and the right deflector. Ventilation holes are arranged on the intermediate deflector, and the above-mentioned left deflector, right deflector, and intermediate deflector are an integral part.

[0008] In order to ensure the deflector effect of the deflector assembly flowing from the left and right sides to the middle position in the smoke collecting hood, the intermediate deflector has a first side and a second side opposite to each other left and right. The left deflector is connected to the first side of the intermediate deflector and gradually slopes forward from right to left as a whole. The right deflector is connected to the second side of the intermediate deflector and gradually slopes forward from left to right as a whole.

[0009] In order to ensure the oil fume extraction effect, the corner position areas on the left and right sides of the smoke collecting hood should be blocked as much as possible. For this reason, the left deflector includes a first inclined plate and a first baffle connected to the first inclined plate and located above the left of the first inclined plate. The right side of the first inclined plate is connected to the first side of the intermediate deflector, and the whole of the first baffle slopes backward relative to the plane where the first inclined plate is located;

[0010] The right deflector includes a second inclined plate and a second baffle connected to the second inclined plate and located above the right of the second inclined plate. The right side of the second inclined plate is connected to the second side of the intermediate deflector, and the whole of the second baffle slopes backward relative to the plane where the second inclined plate is located.

[0011] As an improvement, the connection line at the position where the first baffle is connected to the first inclined plate slopes upward from left to right, and the connection line at the position where the second baffle is connected to the second inclined plate slopes upward from right to left.

[0012] In order to prevent air leakage at the top position of the air inlet of the smoke collecting hood and affect the oil fume extraction effect, the top of the first baffle also has a first extension plate extending forward, and the top of the second baffle also has a second extension plate extending forward.

[0013] Generally speaking, the intermediate deflector can be a plate structure extending on the same plane. However, in order to be adaptively connected to the deflectors on the left and right sides, ensure the deflector effect, and ensure the air intake volume, the intermediate deflector includes a first plate, a second plate located below the left of the first plate, and a third plate located below the right of the first plate. The second plate slopes backward relative to the plane where the first plate is located as a whole, and the third plate slopes backward relative to the plane where the first plate is located as a whole. The left side of the second plate is also the first side of the intermediate deflector, and the right side of the third plate is also the second side of the intermediate deflector.

[0014] As an improvement, the connection line at the position where the second plate is connected to the first plate slopes upward from right to left, and the connection line at the position where the third plate is connected to the first plate slopes upward from left to right.

[0015] In order to ensure smooth air intake at the intermediate deflector, the ventilation holes arranged on the first plate are denoted as the first ventilation holes, and each of the first ventilation holes is a strip-shaped hole extending vertically.

[0016] The ventilation holes arranged on the second plate are denoted as the second ventilation holes, and each of the second ventilation holes is a strip-shaped hole sloping upward from left to right.

[0017] The ventilation holes arranged on the third plate are denoted as the third ventilation holes, and each of the third ventilation holes is a strip-shaped hole sloping upward from right to left.

[0018] For the convenience of fixing to external components, the top of the first plate has a first flanging that folds backward and extends for connecting to the casing of the range hood or the centrifugal fan. The bottom of the second plate has a second flanging that folds backward and extends, and a second connection hole for the fastener to pass through is provided on the second flanging. The bottom of the third plate has a third flanging that folds backward and extends, and a third connection hole for the fastener to pass through is provided on the third flanging.

[0019] The technical solution adopted by the present utility model to solve the second technical problem is: a range hood, including a smoke collecting hood, an air inlet is provided on the front side of the smoke collecting hood, and further includes the deflector assembly for the above-mentioned range hood. The deflector assembly is arranged in the smoke collecting hood and is opposite to the air inlet.

[0020] As an improvement, the air inlet is a strip-shaped opening extending along the left-right direction of the smoke collecting hood. The intermediate deflector is opposite to the middle area in the left-right direction of the air inlet, the left deflector is opposite to the left area of the air inlet, and the right deflector is opposite to the right area of the air inlet.

[0021] Compared with the prior art, the advantages of the present utility model are as follows: the left deflector, the intermediate deflector, and the right deflector of the deflector assembly adopt an integrated structural design, so that the three components do not need to be welded and can be realized only by bending or stretching. Such an integrated deflector assembly reduces the types of parts, improves the material utilization rate, reduces the part material and material management costs, simplifies the part processing procedures, facilitates automated production, is convenient for turnover and transportation, and reduces the manufacturing cost and turnover and transportation cost of the parts. On the other hand, the three components are combined into one component, reducing the mold opening cost, lowering the cost, and at the same time improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic perspective view of the deflector assembly according to an embodiment of the present utility model;

[0023] Figure 2 Schematic perspective view of the range hood according to an embodiment of the present utility model;

[0024] Figure 3 Schematic perspective view of the range hood according to an embodiment of the present utility model after removing the oil screen at the air inlet;

[0025] Figure 4 Schematic perspective view of the range hood according to an embodiment of the present utility model after removing components such as the fan frame. Detailed implementation manners

[0026] The present utility model will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0027] In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present utility model. However, these terms are used herein only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed by the present utility model can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

[0028] Figures 1-4 A preferred embodiment of the deflector assembly for the range hood and the range hood of the present utility model is shown. The range hood includes a housing and a centrifugal fan 14 provided in the housing. The housing generally includes a fan frame 11 and a smoke collecting hood 12 provided at the bottom of the fan frame 11. The inner cavity of the fan frame 11 is communicated with the inner cavity of the smoke collecting hood 12. An air inlet 120 is provided on the front side wall of the smoke collecting hood 12, and external smoke can enter the smoke collecting hood 12 through the air inlet 120. The centrifugal fan 14 is provided in the fan frame 11. When the centrifugal fan 14 operates, a negative pressure is generated, and external oil fume can be sucked into the smoke collecting hood 12 through the air inlet 120. An oil screen 13 is also provided at the air inlet 120 of the smoke collecting hood 12 for filtering oil fume. A smoke baffle 15 that can deflect forward and backward relative to the smoke collecting hood 12 is further provided at the front of the smoke collecting hood 12. The smoke baffle 15 is connected to the main body of the smoke collecting hood 12 through a hinge movement mechanism, and can specifically deflect forward to open the above-mentioned air inlet 120 and deflect backward to block and close the above-mentioned air inlet 120. The hinge movement mechanism for driving the deflection of the smoke baffle 15 can adopt a conventional hinge movement mechanism in the prior art and will not be elaborated herein.

[0029] The air inlet 120 of the smoke collecting hood 12 in this embodiment is a strip-shaped opening extending in the left-right direction.

[0030] A flow guiding plate assembly is further provided in the smoke collecting hood 12. The flow guiding plate assembly includes a left flow guiding plate 20, a right flow guiding plate 30, and an intermediate flow guiding plate 40 connected between the left flow guiding plate 20 and the right flow guiding plate 30. Among them, ventilation holes are arranged on the intermediate flow guiding plate 40. The above-mentioned left flow guiding plate 20, right flow guiding plate 30, and intermediate flow guiding plate 40 are integral parts, and can be realized by stretch forming or bending processing.

[0031] Generally speaking, the intermediate flow guiding plate 40 can be a plate body structure extending on the same plane. However, in order to be adaptively connected with the flow guiding plates on the left and right sides, ensure the flow guiding effect, and ensure the air inlet volume, the intermediate flow guiding plate 40 in this embodiment includes a first plate 41, a second plate 42 located at the lower left of the first plate 41, and a second plate 42 located at the lower right of the first plate 41. As Figure 1 shown in, the first plate 41 is an inverted triangular structure with a larger upper part and a smaller lower part. The connection line at the position where the second plate 42 is connected to the first plate 41 slopes upward from right to left. Correspondingly, both the second plate 42 and the third plate 43 are triangular structures with a larger lower part and a smaller upper part. The connection line at the position where the third plate 43 is connected to the first plate 41 slopes upward from left to right.

[0032] The second plate 42 is inclined backward relative to the plane where the first plate 41 is located as a whole. The left side edge of the second plate 42, that is, the first side edge 401 constituting the intermediate flow guiding plate 40, is connected to the left flow guiding plate 20. The third plate 43 is inclined backward relative to the plane where the first plate 41 is located as a whole. The right side edge of the third plate 43, that is, the second side edge 402 constituting the intermediate flow guiding plate 40, is connected to the right flow guiding plate 30.

[0033] The intermediate deflector 40 is distributed with ventilation holes. Specifically, ventilation holes are provided on the first plate 41, the second plate 42 and the third plate 43 of the intermediate deflector 40, but the arrangement modes of the ventilation holes of the three are different. Specifically, the ventilation holes arranged on the first plate 41 are denoted as the first ventilation holes 412, the ventilation holes arranged on the second plate 42 are denoted as the second ventilation holes 422, and the ventilation holes arranged on the third plate 43 are denoted as the third ventilation holes 432. Considering that the flowing directions of the airflows in the regions where the first plate 41, the second plate 42 and the third plate 43 are located are different. For example, the airflow in the region where the first plate 41 is located is mainly the airflow entering from the front of the air inlet 120 of the smoke collecting hood 12, while the airflow in the region where the second plate 42 is located is mainly the airflow deflected by the left deflector 20, and the airflow in the region where the third plate 43 is located is mainly the airflow deflected by the right deflector 30. Therefore, each of the first ventilation holes 412 on the first plate 41 is a strip-shaped hole extending vertically, each of the second ventilation holes 422 on the second plate 42 is a strip-shaped hole inclined upward from left to right, and each of the third ventilation holes 432 on the third plate 43 is a strip-shaped hole inclined upward from right to left.

[0034] The top of the first plate 41 has a first flanging 411 extending backward and folded, and a clamping groove is formed on the first flanging 411, which can be connected with Figure 4 the buckle on the volute 140 of the centrifugal fan 14 as shown. The bottom of the second plate 42 has a second flanging 421 extending backward and folded, and a second connection hole (not shown) for a fastener (such as a screw) to pass through is formed on the second flanging 421. The bottom of the third plate 43 has a third flanging 431 extending backward and folded, and a third connection hole (not shown) for a fastener (such as a screw) to pass through is formed on the third flanging 431.

[0035] The left deflector 20 of this embodiment is connected to the first side 401 of the middle deflector 40 and is gradually inclined forward from right to left as a whole. The left deflector 20 includes a first inclined plate 21 and a first baffle 22 that is connected to the first inclined plate 21 and is located above and to the left of the first inclined plate 21. Among them, the right side of the first inclined plate 21 is connected to the first side 401 of the middle deflector 40 (that is, the left side of the second plate 42). The whole of the first baffle 22 of the left deflector 20 is inclined backward relative to the plane where the first inclined plate 21 is located, and the top of the first baffle 22 also has a first extension plate 23 extending forward. Thus, after the deflector assembly is installed in the smoke collecting hood 12, the corner position area (non-main air inlet area) in the upper left corner of the smoke collecting hood 12 can be blocked or occupied by the first baffle 22 and the first extension plate 23, reducing the flow dead angle and ensuring the smoothness of smoke suction and discharge. Similarly, the right deflector 30 is also designed in this way. Specifically, the right deflector 30 is connected to the second side 402 of the middle deflector 40 and is gradually inclined forward from left to right as a whole. The right deflector 30 includes a second inclined plate 31 and a second baffle 32 that is connected to the second inclined plate 31 and is located above and to the right of the second inclined plate 31. Among them, the left side of the second inclined plate 31 is connected to the second side 402 of the middle deflector 40 (that is, the right side of the third plate 43). The whole of the second baffle 32 of the right deflector 30 is inclined backward relative to the plane where the second inclined plate 31 is located, and the top of the second baffle 32 also has a second extension plate 33 extending forward. Thus, after the deflector assembly is installed in the smoke collecting hood 12, the corner position area (non-main air inlet area) in the upper right corner of the smoke collecting hood 12 can be blocked or occupied by the second baffle 32 and the second extension plate 33, reducing the flow dead angle and ensuring the smoothness of smoke suction and discharge.

[0036] After the deflector assembly is installed in place in the smoke collecting hood 12, the deflector assembly is opposite to the air inlets 120 arranged horizontally on the left and right. Among them, the middle deflector 40 is opposite to the middle area in the left-right direction of the air inlets 120, the left deflector 20 is opposite to the left area of the air inlets 120, and the right deflector 30 is opposite to the right area of the air inlets 120.

[0037] The left deflector 20, the middle deflector 40, and the right deflector 30 of the deflector assembly of this embodiment adopt an integrated structural design, so that these three components do not need to be welded and can be realized only by bending or stretching. Such an integrated deflector assembly reduces the types of parts, improves the material utilization rate, reduces the part material and material management costs, simplifies the part processing procedures, facilitates automated production, is convenient for turnover and transportation, and reduces the manufacturing cost and turnover and transportation cost of the parts. On the other hand, the three components are combined into one component, reducing the mold opening cost, lowering the cost, and at the same time improving the assembly efficiency.

Claims

1. A guide plate assembly for a range hood, arranged in a fume collecting hood (12) of the range hood, characterized in that: The invention comprises a left guide plate (20), a right guide plate (30) and an intermediate guide plate (40) connected between the left guide plate (20) and the right guide plate (30), wherein the intermediate guide plate (40) is provided with ventilation holes, and the left guide plate (20), the right guide plate (30) and the intermediate guide plate (40) are an integral part.

2. The guide plate assembly for a range hood according to claim 1, characterized in that: The middle guide plate (40) has a first side (401) and a second side (402) which are opposite to each other on the left and right sides. The left guide plate (20) is connected to the first side (401) of the middle guide plate (40) and is gradually inclined forward from right to left as a whole. The right guide plate (30) is connected to the second side (402) of the middle guide plate (40) and is gradually inclined forward from left to right as a whole.

3. The guide plate assembly for a range hood according to claim 2, characterized in that: The left guide plate (20) comprises a first inclined plate (21) and a first baffle plate (22) connected to the first inclined plate (21) and located at the upper left of the first inclined plate (21); the right side of the first inclined plate (21) is connected to the first side (401) of the middle guide plate (40); and the first baffle plate (22) is tilted backwards as a whole relative to the plane where the first inclined plate (21) is located; The right guide plate (30) comprises a second inclined plate (31) and a second baffle plate (32) connected to the second inclined plate (31) and located to the upper right of the second inclined plate (31); the right side edge of the second inclined plate (31) is connected to the second side edge (402) of the middle guide plate (40); and the second baffle plate (32) as a whole is inclined backward relative to the plane where the second inclined plate (31) is located.

4. The guide plate assembly for a range hood according to claim 3, characterized in that: The connecting line at the connecting position of the first baffle plate (22) and the first inclined plate (21) is inclined upward from left to right, and the connecting line at the connecting position of the second baffle plate (32) and the second inclined plate (31) is inclined upward from right to left.

5. The guide plate assembly for a range hood according to claim 3, characterized in that: The top of the first baffle plate (22) also has a first extension plate (23) extending forward, and the top of the second baffle plate (32) also has a second extension plate (33) extending forward.

6. The guide plate assembly for a range hood according to claim 2, characterized in that: The intermediate guide plate (40) comprises a first plate (41), a second plate (42) located to the lower left of the first plate (41), and a third plate (43) located to the lower right of the first plate (41); the second plate (42) is generally inclined backward relative to the plane where the first plate (41) is located; the third plate (43) is generally inclined backward relative to the plane where the first plate (41) is located; the left side of the second plate (42) also constitutes a first side (401) of the intermediate guide plate (40); and the right side of the third plate (43) also constitutes a second side (402) of the intermediate guide plate (40).

7. The guide plate assembly for a range hood according to claim 6, characterized in that: The connecting line at the connecting position of the second plate (42) and the first plate (41) is inclined upward from right to left, and the connecting line at the connecting position of the third plate (43) and the first plate (41) is inclined upward from left to right.

8. The guide plate assembly for a range hood according to claim 6, characterized in that: The ventilation holes arranged on the first plate (41) are referred to as first ventilation holes (412), and each of the first ventilation holes (412) is a strip-shaped hole extending upward and downward; The ventilation holes arranged on the second plate (42) are referred to as second ventilation holes (422), and each of the second ventilation holes (422) is a strip-shaped hole inclined upward from left to right; The ventilation holes arranged on the third plate (43) are referred to as third ventilation holes (432), and each of the third ventilation holes (432) is a strip-shaped hole inclined upward from right to left.

9. The guide plate assembly for a range hood according to claim 6, characterized in that: The top of the first plate (41) has a first flange (411) that is folded and extended backwards for connecting to the housing of the range hood or the centrifugal fan (14); the bottom of the second plate (42) has a second flange (421) that is folded and extended backwards, and a second connecting hole for a fastener to pass through is formed on the second flange (421); the bottom of the third plate (43) has a third flange (431) that is folded and extended backwards, and a third connecting hole for a fastener to pass through is formed on the third flange (431).

10. A range hood, comprising a fume collecting hood (12), wherein an air inlet (120) is provided on the front side of the fume collecting hood (12), wherein: It also comprises a guide plate assembly for the range hood according to any one of claims 1 to 9, wherein the guide plate assembly is arranged in the fume collecting hood (12) and is opposite to the air inlet (120).

11. The range hood according to claim 10, characterized in that: The air inlet (120) is a strip-shaped opening extending in the left-right direction of the smoke hood (12); the middle guide plate (40) is opposite to the middle area of ​​the air inlet (120) in the left-right direction; the left guide plate (20) is opposite to the left area of ​​the air inlet (120); and the right guide plate (30) is opposite to the right area of ​​the air inlet (120).

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