Range hood

Abstract

A range hood comprises an exhaust fume collecting hood, the bottom of the exhaust fume collecting hood is provided with an exhaust fume collecting cavity, and the exhaust fume collecting cavity is provided with a left side wall, a right side wall, a front side wall and a rear side wall, a flow guide wall is arranged at the top of the smoke collecting cavity and gradually inclines downwards from the left side edge and the right side edge to the center of the flow guide wall to be integrally in a V shape, the left side edge and the right side edge of the flow guide wall are connected with the upper edges of the left side wall and the right side wall of the corresponding smoke collecting cavity respectively, and a front air inlet is formed between the V-shaped front side edge of the flow guide wall and the corresponding front side wall. And a rear air inlet is formed between the V-shaped rear side edge of the flow guide wall and the corresponding rear side wall. The range hood is simple in structure and capable of guaranteeing the oil smoke suction effect, and due to the fact that the flow guide wall is in the V shape, oil drops adhering to the inner wall face and the outer wall face of the flow guide wall can flow downwards along the wall faces of the flow guide wall under the action of gravity of the oil drops to be collected to the center of the flow guide wall, and then collection and cleaning of the oil drops are facilitated. And the flow guide wall with the V-shaped structure is convenient to wipe and clean.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of kitchen appliances, and particularly relates to a range hood. BACKGROUND

[0002] Generally, the range hood includes top suction type and side suction type, the top suction type range hood utilizes the rising of oil fume to produce a negative pressure area above the cooking bench to suck and exhaust the oil fume generated during cooking. However, due to the installation height of the top suction type range hood being far away from the cooking bench, the oil fume is prone to escape to the surroundings during the rising process due to the interference of the external environment, which affects the oil fume suction effect. Therefore, a guide vane plate such as a butterfly plate is usually arranged at the air inlet of the top suction type range hood to improve the oil fume suction effect by utilizing the wall attachment effect. For example, the structures disclosed in the Chinese utility model patents with the application number CN202121316860.8 and the authorization announcement number CN216079941U, and the Chinese utility model patent with the application number CN202322337014.X and the authorization announcement number CN220541188U.

[0003] The existing guide vane plate is usually installed through a detachable structure such as a buckle. The oil droplets in the range hood fall onto the upper plate surface of the guide vane plate, and the user cleans the guide vane plate by detaching it. However, the oil droplets may splash and fall out when the guide vane plate is detached, and the size of the guide vane plate is generally larger than that of the household sink, which makes it difficult to clean the guide vane plate. At the same time, since the negative pressure cavity is in the middle of the smoke collecting cavity, the oil fume channel is from the periphery to the middle, which easily causes the surface of the smoke collecting cavity and the guide vane plate to be covered with oil, and the oil droplets to vertically fall and pollute the cooking appliance and the food in the pot. SUMMARY

[0004] The first technical problem to be solved by the utility model is to provide a range hood with simple structure and good oil fume suction effect.

[0005] The second technical problem to be solved by the utility model is to provide a range hood which is easy to clean.

[0006] The technical scheme adopted by the utility model to solve the above-mentioned first technical problem is as follows: a range hood, comprising:

[0007] A smoke collecting cover having a smoke collecting cavity at the bottom, the smoke collecting cavity having a left side wall, a right side wall and a front side wall and a rear side wall extending vertically and connecting the left and right side walls;

[0008] Characterized in that:

[0009] The top of the smoke collecting cavity has a flow guide wall, which is V-shaped as a whole with the left and right side edges of the flow guide wall being connected with the upper edges of the left and right side walls of the corresponding smoke collecting cavity respectively, the front side edge of the flow guide wall being connected with the front side wall of the corresponding smoke collecting cavity, and the rear side edge of the flow guide wall being connected with the rear side wall of the corresponding smoke collecting cavity.

[0010] The flow guide wall in the utility model can guide the upward flowing oil fume, so that the oil fume flows along the wall and is sucked into the smoke collecting cover through the front and rear air inlets, thereby ensuring the oil smoke suction effect.

[0011] In order to better guide the oil fume, preferably, the flow guide wall has a bottom wall located in the center, and the inclined walls are extended upward from the left and right edges of the bottom wall in a posture of being away from each other, the upward inclination angles of the two inclined walls are both 4-6°, and the upper edges of the two inclined walls are the left and right side edges of the flow guide wall.

[0012] Preferably, the width of the flow guide wall in the front-rear direction gradually increases from the center to the left and right sides, so that the flow passage area of the front air inlet gradually decreases from the center to the left and right sides, and the flow passage area of the rear air inlet gradually decreases from the center to the left and right sides.

[0013] Preferably, the left and right side edges of the flow guide wall are connected with the left and right side walls of the corresponding smoke collecting cavity as an integral piece.

[0014] In the above-mentioned scheme, in order to further solve the second technical problem and facilitate the collection of oil drops on the flow guide wall, preferably, the flow guide wall is downward inclined as a whole from front to rear.

[0015] Preferably, the flow guide wall is downward inclined as a whole from front to rear by 15-17°.

[0016] Further, an oil cup is arranged below the smoke collecting cover, and the cup opening of the oil cup faces upward and is opposite to the rear side edge of the flow guide wall.

[0017] Preferably, the V-shaped front side edge of the flow guide wall is bent upward to form a front side turnup; the V-shaped rear side edge of the flow guide wall is bent upward to form a rear side turnup. The design of the front side turnup and the rear side turnup can guide the oil fume to flow upward.

[0018] Preferably, the upward extending length of the front side turnup is 3-5 mm; the upward extending length of the rear side turnup is 3-5 mm. The upward extending length of the front side turnup and the rear side turnup is less than the diameter of the oil droplet, so that the design of the turnup does not affect the flow of the oil droplet.

[0019] In order to better guide the oil fume to flow upward while not affecting the flow of the oil droplet, preferably, the front side turnup and the flow guide wall are arranged at an obtuse angle, and the front side turnup is inclined to the vertical plane by 14-20°; the rear side turnup and the flow guide wall are arranged at an obtuse angle, and the rear side turnup is inclined to the vertical plane by 14-20°.

[0020] In the above scheme, a front flow guide is further included, which is arranged above the front air inlet and has a first flow guide plate extending upward from back to front, and a second flow guide plate extending downward and forward from the upper edge of the first flow guide plate, the upper end joint of the first flow guide plate and the second flow guide plate is located at the rear side of the front air inlet, and the first flow guide plate is provided with front filter mesh holes.

[0021] And / or, a rear flow guide is further included, which is arranged above the rear air inlet and has a third flow guide plate extending upward from front to rear, and a fourth flow guide plate extending downward and rearward from the upper edge of the third flow guide plate, the upper end joint of the third flow guide plate and the fourth flow guide plate is arranged away from the rear air inlet, and the fourth flow guide plate is provided with rear filter mesh holes.

[0022] The first flow guide plate and the second flow guide plate in the front flow guide are used for bidirectional flow guide, the first flow guide plate is relatively close to the fan system of the range hood, and the front filter mesh holes on the first flow guide plate are used for main air inlet. And because the upper end joint of the first flow guide plate and the second flow guide plate is located at the rear side of the front air inlet, the oil droplet falling from the upper end joint and the first flow guide plate can be caught by the inner wall surface of the flow guide wall, and then flow along the inner wall surface of the flow guide wall to the center and the rear side to be collected in one place.

[0023] The third flow guide plate and the fourth flow guide plate in the rear flow guide are used for bidirectional flow guide, the fourth flow guide plate is relatively far away from the fan system of the range hood, and the rear filter holes on the fourth flow guide plate are used for auxiliary air inlet. And because the upper end joint of the third flow guide plate and the fourth flow guide plate is arranged away from the rear air inlet, the oil droplet at the upper end joint can be prevented from falling through the rear air inlet.

[0024] Preferably, the upper joint of the third and fourth guide vanes is located on the rear side of the rear air inlet.

[0025] To better guide the flow of oil fumes, preferably, the inclination angle of the first, second, third, and fourth guide plates relative to the horizontal plane is greater than 14°. This inclination angle also facilitates the flow of oil droplets.

[0026] Preferably, the front wall of the smoke collection chamber slopes backward from bottom to top. This facilitates the flow of oily fumes from the inlet.

[0027] Preferably, the front guide component also has a U-shaped part disposed above the front sidewall of the smoke collection chamber, and encloses a space for installing a lighting lamp between itself and the front sidewall of the smoke collection chamber. Correspondingly, at least a portion of the front sidewall of the smoke collection chamber is a light-transmitting wall that allows light to pass through. The cooperation between the U-shaped part and the front sidewall of the smoke collection chamber can prevent the lighting lamp from being contaminated by oil fumes. At the same time, since the front sidewall of the smoke collection chamber is a light-transmitting wall and slopes backward from bottom to top, the lighting lamp can illuminate the space below the range hood while preventing the light from shining directly into people's eyes.

[0028] Compared with existing technologies, the advantages of this invention are as follows: The guide wall in this invention can guide the upward flow of oily fumes, allowing the oily fumes to flow along the wall and be drawn into the smoke collection hood from the front and rear air inlets. In other words, this invention combines the smoke collection chamber and the butterfly plate into one unit, eliminating the need for a separate butterfly plate. Furthermore, because the guide wall is V-shaped, oil droplets adhering to the inner and outer surfaces of the guide wall can flow downwards along the wall surface under their own gravity and collect in the center of the guide wall, thus facilitating the collection and cleaning of oil droplets. The V-shaped structure of the guide wall in this invention also makes it easy to wipe and clean. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0030] Figure 2 This is a front view of an embodiment of the present utility model;

[0031] Figure 3 This is a structural schematic diagram from another perspective of an embodiment of the present invention (oil cup omitted);

[0032] Figure 4 This is a longitudinal sectional view of an embodiment of the present utility model (the sectional view is a vertical plane extending from front to back);

[0033] Figure 5 for Figure 4 Enlarged view of section A in the middle;

[0034] Figure 6 for Figure 4 Enlarged view of section B;

[0035] Figure 7 is another longitudinal sectional view (the section is a vertical plane extending front and back) of an embodiment of the present application;

[0036] Figure 8 is a perspective exploded view of a partial structure of an embodiment of the present application. DETAILED DESCRIPTION

[0037] The present application will be further described in detail below with reference to the embodiments of the drawings.

[0038] As shown in Figures 1-8 , it is a preferred embodiment of a range hood of the present application, which comprises a smoke collecting hood 1, an oil cup 2, a front flow guide 3, a rear flow guide 4, a fan frame 5 and a fan system 6.

[0039] The side of the smoke hood 1 facing the user is the front side. The smoke hood 1 is hollow inside, and the bottom of the smoke hood 1 has a smoke collecting cavity 10 opening downward, which has a vertically extending left side wall 11, a right side wall 12, and a front side wall 13 and a rear side wall 14 connecting the left and right side walls. The front side wall 13 is inclined backward from bottom to top, and the rear side wall 14 is inclined forward from bottom to top. At the same time, the top of the smoke collecting cavity 10 has a flow guide wall 15, which is inclined downward as a whole from front to back by 15-17° (the inclination angle a can be any value between 15-17°, such as 15°, 16°, 17°, etc.), so that the oil droplets on the flow guide wall can flow downward along the wall surface under the action of their own gravity. At the same time, the flow guide wall 15 is inclined downward from its left and right side edges to the center and forms a V shape as a whole. Specifically, the flow guide wall 15 has a bottom wall 151 in the center, and the inclined walls 152 extend upward from the left and right edges of the bottom wall 151 in a diverging manner. The upward inclination angle of the two inclined walls 152 is 4-6° (the inclination angle b can be any value between 4-6°, such as 4°, 5°, 6°, etc.), and the upper edges of the two inclined walls 152, as the left and right side edges of the flow guide wall 15, are connected to the upper edges of the corresponding left and right side walls of the smoke collecting cavity 10 to form an integrated joint. The V-shaped front side edge of the flow guide wall 15 is bent upward to form a front side flange 153, and forms a front air inlet 10a with the corresponding front side wall 13. The upward extension length H1 of the front side flange 153 is 3-5 mm, the front side flange 153 and the flow guide wall 15 are arranged at an obtuse angle, and the front side flange 153 is inclined to the vertical plane by 14-20° (H1 can be any value between 3-5 mm, such as 3 mm, 4 mm, 5 mm, etc., and the inclination angle c of the front side flange 153 to the vertical plane can be any value between 14-20°, such as 14°, 15°, 17°, 19°, 20°, etc.). The V-shaped rear side edge of the flow guide wall 15 is bent upward to form a rear side flange 154, and forms a rear air inlet 10b with the corresponding rear side wall 14. The upward extension length H2 of the rear side flange 154 is 3-5 mm, the rear side flange 154 and the flow guide wall 15 are arranged at an obtuse angle, and the rear side flange 154 is inclined to the vertical plane by 14-20° (H2 can be any value between 3-5 mm, such as 3 mm, 4 mm, 5 mm, etc., and the inclination angle d of the rear side flange 154 to the vertical plane can be any value between 14-20°, such as 14°, 15°, 17°, 19°, 20°, etc.). At this time, the flow guide wall 15 can guide the upward flowing oil fume flow, so that the oil fume flow flows along the wall and is sucked into the smoke hood from the front and rear air inlets.Meanwhile, the width of the flow guide wall 15 in the front-rear direction gradually increases from the center to the left and right sides, and the flow passage area of the front air inlet 10a gradually decreases from the center to the left and right sides, and the flow passage area of the rear air inlet 10b gradually decreases from the center to the left and right sides, thereby facilitating the suction of oil fumes at the left and right sides and the center into the front and rear air inlets, and reducing the risk of oil fume escape. When the range hood is working, the oil droplets on the inner and outer walls of the flow guide wall flow downward and to the center of the flow guide wall under the action of their own gravity and converge in one place, thereby facilitating the collection and cleaning of oil droplets on the flow guide wall, and only the outer wall of the flow guide wall and the oil cup need to be wiped during daily cleaning, and the user experience is good. At the same time, the flow guide wall can guide the upward flowing oil fume gas flow, so that the oil fume gas flow flows along the wall and is sucked into the smoke collecting hood from the front and rear air inlets.

[0040] Meanwhile, as in the prior art, the front, rear, left and right side walls of the cover body of the smoke collecting hood surround the periphery of the smoke collecting cavity, and the lower edges of the front, rear, left and right side walls of the cover body are respectively connected with the lower edges of the front, rear, left and right side walls of the corresponding smoke collecting cavity 10 to form the internal space 100 of the smoke collecting hood 1, and the internal space 100 is connected with the outside through the front and rear air inlets. And as shown in Figure 3 The rear side wall of the cover body is provided with an oil leakage hole 101 at the joint with the rear side wall of the smoke collecting cavity 10, so as to allow the oil droplets in the internal space 100 of the smoke collecting hood to fall down.

[0041] In order to collect oil droplets, the above-mentioned oil cup 2 is arranged below the smoke collecting hood 1, and the cup opening of the oil cup 2 faces upward and is opposite to the V-shaped rear side edge of the flow guide wall 15 and the oil leakage hole 100, so as to be able to receive the oil droplets flowing down from the flow guide wall and the oil droplets in the internal space 100 of the smoke collecting hood.

[0042] The above-mentioned fan frame 5 and fan system 6 are both prior art, and the fan frame 5 is arranged above the smoke collecting hood 1 and is connected with the inside thereof. The fan system 6 is a centrifugal fan of the prior art, which is arranged in the fan frame 5 and is used to drive the oil fume gas flow to enter the smoke collecting hood and the fan frame from the front and rear air inlets, and to be discharged from the air outlet at the top of the fan frame 5.

[0043] As Figures 4-8As shown, the above-mentioned front flow guide 3 is arranged in the inside space 100 of the smoke hood above the front air inlet 10a, and has a first flow guide plate 31 extending left and right and inclined upward from back to front, and a second flow guide plate 32 extending downward and forward from the upper edge of the first flow guide plate 31. The upper end joint of the first flow guide plate 31 and the second flow guide plate 32 is located at the rear side of the front air inlet 10a, the first flow guide plate 31 is relatively close to the fan system 6, and the first flow guide plate 31 is distributed with front filter mesh holes 310 as the main air inlet. The rear flow guide 4 is arranged in the inside space 100 of the smoke hood above the rear air inlet 10b, and has a third flow guide plate 41 extending left and right and inclined upward from front to back, and a fourth flow guide plate 42 extending downward and backward from the upper edge of the third flow guide plate 41. The upper end joint of the third flow guide plate 41 and the fourth flow guide plate 42 is located at the rear side of the rear air inlet 10b to avoid the rear air inlet 10b, and the fourth flow guide plate 42 is relatively far away from the fan system 6, and the fourth flow guide plate 42 is distributed with rear filter mesh holes 420 as the auxiliary air inlet. In this embodiment, the inclination angle e of the first flow guide plate 31, the second flow guide plate 32, the third flow guide plate 41 and the fourth flow guide plate 42 relative to the horizontal plane is greater than 14°. It is beneficial to guide the oil fume flow and facilitate the flow of oil droplets to finally collect in the oil cup, avoiding the vertical dripping of oil droplets to the kitchen table. For details, see Figure 7 .

[0044] At the same time, in order to better constrain the front and rear flow guides, two support plates 7 with hollow holes are vertically arranged in the inside space 100 of the smoke hood in this embodiment. The plate surfaces of the two support plates 7 are opposite to each other and the upper ends are fixed relative to the fan frame 5, and the two support plates 7 are located between the front and rear flow guides and are fixed relative to the front and rear flow guides. Specifically, the lower edge of the first flow guide plate 31 of the front flow guide 3 extends upward to form a front folding edge 311, which is attached to the front side edges of the two support plates 7 and constrained together with them. The lower edge of the third flow guide plate 41 of the rear flow guide 4 extends upward to form a rear folding edge 411, which is attached to the rear side edges of the two support plates 7 and constrained together with them. The lower edge of the fourth flow guide plate 42 is supported on the joint of the rear side wall of the cover body and the rear side wall of the smoke collecting cavity 10.

[0045] As shown in Figures 6-8 , the front flow guide 3 also has a few-shaped part 34 arranged above the front side wall 13 of the smoke collecting cavity and constrained together with the front side wall 13, and a space 340 for installing a lighting lamp is enclosed between the front side wall 13 and the front side wall 13 of the smoke collecting cavity. The front side wall 13 of the smoke collecting cavity is a light-transmitting wall for light to pass through.

[0046] In the description and claims of the present application, terms are used to generally refer to the relative position of one part to another part. These terms are used only for the convenience of specific orientation in the description and claims, and are not intended to limit the scope of the present application. For example, the terms "upper", "lower", "right", "left", "front", "back", "side", "top", "bottom" and the like are used only for the convenience of specific orientation in the description and claims, and are not intended to limit the scope of the present application. These terms are used only for the convenience of specific orientation in the description and claims, and are not intended to limit the scope of the present application.

[0047] In the description and claims of the present application, the term "vertical" is used to mean substantially in the up-down direction, and is not limited to only the vertical direction, but can also be slightly inclined relative to the vertical direction.

Claims

1. A range hood comprising: a hood (1) having a hood cavity (10) at the bottom, the hood cavity (10) having a vertically extending left side wall (11), a right side wall (12), and a front side wall (13) and a rear side wall (14) connecting the left and right side walls; characterized in that: the top of the hood cavity (10) has a flow guide wall (15) that is V-shaped as a whole with the left and right side edges of the flow guide wall (15) respectively joined to the upper edges of the corresponding left and right side walls of the hood cavity (10), and the V-shaped front side edge of the flow guide wall (15) and the corresponding front side wall (13) form a front air inlet (10a), and the V-shaped rear side edge of the flow guide wall (15) and the corresponding rear side wall (14) form a rear air inlet (10b).

2. The hood according to claim 1, characterized in that: the flow guide wall (15) has a bottom wall (151) in the center, and inclined walls (152) extending upward from the left and right edges of the bottom wall (151) in a diverging manner, the upward inclination angles of the two inclined walls (152) are both 4-6°, and the upper edges of the two inclined walls (152) are the left and right side edges of the flow guide wall (15).

3. The hood according to claim 1, characterized in that: the width of the flow guide wall (15) in the front-rear direction gradually increases from the center to the left and right sides, so that the flow area of the front air inlet (10a) gradually decreases from the center to the left and right sides, and the flow area of the rear air inlet (10b) gradually decreases from the center to the left and right sides.

4. The hood according to claim 1, characterized in that: the left and right side edges of the flow guide wall (15) are connected to the corresponding left side wall (11) and right side wall (12) of the hood cavity (10) as an integral piece.

5. The hood according to claim 1, characterized in that: the flow guide wall (15) as a whole is inclined downward from front to rear.

6. The hood according to claim 5, characterized in that: the flow guide wall (15) as a whole is inclined downward by 15-17° from front to rear.

7. The hood according to claim 5, characterized in that: an oil cup (2) is further included, which is arranged below the hood (1) with the cup opening upward and opposite to the V-shaped rear side edge of the flow guide wall (15).

8. The hood according to claim 5, characterized in that: the V-shaped front side edge of the flow guide wall (15) is bent upward to form a front side flange (153), and the V-shaped rear side edge of the flow guide wall (15) is bent upward to form a rear side flange (154).

9. The hood according to claim 8, characterized in that: the upward extension length of the front side flange (153) is 3-5 mm, and the upward extension length of the rear side flange (154) is 3-5 mm.

10. The hood according to claim 8, characterized in that: the front side flange (153) is arranged at an obtuse angle with the flow guide wall (15), and the front side flange (153) is inclined by 14-20° relative to the vertical plane, and the rear side flange (154) is arranged at an obtuse angle with the flow guide wall (15), and the rear side flange (154) is inclined by 14-20° relative to the vertical plane.

11. The hood according to any one of claims 5 to 10, characterized in that: The front flow guide (3) is arranged above the front air inlet (10a) and has a first flow guide plate (31) extending upwardly from back to front, a second flow guide plate (32) extending downwardly and forwardly from the upper edge of the first flow guide plate (31), and an upper end joint (33) of the first flow guide plate (31) and the second flow guide plate (32) located at the rear side of the front air inlet (10a), wherein the first flow guide plate (31) is provided with front filter mesh holes (310); The rear flow guide (4) is arranged above the rear air inlet (10b) and has a third flow guide plate (41) extending upwardly from front to rear, a fourth flow guide plate (42) extending downwardly and rearwardly from the upper edge of the third flow guide plate (41), and an upper end joint (43) of the third flow guide plate (41) and the fourth flow guide plate (42) arranged away from the rear air inlet (10b), wherein the fourth flow guide plate (42) is provided with rear filter mesh holes (420).

12. The hood according to claim 11, characterized in that: The first flow guide plate (31), the second flow guide plate (32), the third flow guide plate (41), and the fourth flow guide plate (42) have an inclination angle greater than 14° with respect to the horizontal plane.

13. The hood according to claim 11, characterized in that: The front side wall (13) of the smoke collecting cavity (10) is inclined rearwardly from bottom to top.

14. The hood according to claim 13, characterized in that: The front flow guide (3) further has a U-shaped component (34) arranged above the front side wall (13) of the smoke collecting cavity and enclosing a space (340) for mounting a lighting lamp with the front side wall (13) of the smoke collecting cavity, and correspondingly, at least a part of the front side wall (13) of the smoke collecting cavity is a light-transmitting wall for light to pass through.

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