Oil guide structure of range hood and range hood

Abstract

The utility model relates to an oil guide structure of a range hood and the range hood. The oil guide structure comprises a machine shell, the oil guide plate is arranged in the machine shell and used for guiding the received oil liquid to the inner wall of the machine shell; the wall of the machine shell is provided with a profiling which is recessed towards the interior of the machine shell, a convex hull which protrudes towards the interior of the machine shell is formed in the area, corresponding to the profiling, of the inner wall of the machine shell, and a gap is formed between the lower edge of the oil guide plate and an inner wall body of the machine shell. And the convex hull is positioned below the lower edge of the oil guide plate so as to receive oil dripping from the lower edge of the oil guide plate. The range hood has the advantages that a certain gap can be reserved between the lower edge of the oil guide plate and the inner wall body of the shell, the problem that noise is generated due to resonance between the oil baffle plate and the shell is solved, and the situation that oil directly drops onto a cooking bench from the oil guide plate, and consequently the use experience of a user is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to an oil guide structure of a range hood and the range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. The range hood works based on the principle of fluid dynamics. The centrifugal fan installed inside the range hood absorbs and exhausts the oil smoke, and uses a filter to filter out some grease particles. The centrifugal fan includes a volute, an impeller installed in the volute, and a motor that drives the impeller to rotate. When the impeller rotates, negative pressure suction is generated at the center of the fan, sucking the oil smoke under the range hood into the fan, and after being accelerated by the fan, it is collected by the volute and guided to be discharged outdoors.

[0003] The function of the range hood is to separate oil smoke. The range hood itself has a lot of oil stains, so the oil path treatment of the range hood is also a very important design to prevent the oil stains from dripping directly onto the countertop or pots, and to ensure that the oil stains separated by the range hood can be smoothly introduced into the oil cup. For example, the Chinese utility model patent application with application number CN202122573220.1 (authorization announcement number: CN216790285U) discloses a range hood, including a smoke hood and a fan frame arranged above the smoke hood, the bottom of the smoke hood is provided with a panel assembly, the panel assembly is provided with an air inlet, a filter is arranged at the air inlet, the filter is gradually inclined downward from front to back, an oil cup is arranged at the bottom of the rear side of the smoke hood, an upper guide plate is arranged in the front side of the smoke hood at the front side of the air inlet, the upper guide plate is gradually inclined downward from front to back, the front end of the upper guide plate can be connected to the front lower end of the fan frame, and the rear end of the upper guide plate extends to the front end of the filter.

[0004] However, the oil guide structure for extracting range fumes in the above patent application still has certain deficiencies. Generally speaking, the most ideal design of the oil circuit is that the oil on the upper part of the machine is received and guided by parts, so that it gradually flows down from the upper part and finally flows into the oil cup without flowing to the stove and affecting the user experience. However, in the actual production process, in order to avoid resonance caused by contact between parts and affect the machine noise problem, the parts used for diversion (such as oil guide plates) will have corresponding design gaps after assembly with the machine, or there will be assembly gaps due to deformation of parts, which will easily cause the oil to drip from the gap instead of flowing downstream, affecting the oil circuit quality.

[0005] Therefore, the oil guide structure of the existing range hood needs to be further improved. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide an oil guide structure for a range hood with a reasonable oil guide circuit design and capable of effectively reducing the resonance noise problem, in view of the current status of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a range hood using the above oil guide structure in view of the current status of the prior art.

[0008] The technical solution adopted by the utility model to solve the first technical problem is: an oil guide structure of a range hood, comprising:

[0009] chassis;

[0010] An oil guide plate is arranged in the casing and is used to guide the received oil to the inner wall of the casing;

[0011] The wall of the casing has a depression that is recessed toward the inside of the casing, and a bulge that protrudes toward the inside of the casing is formed on the inner wall of the casing in an area corresponding to the depression. There is a gap between the lower edge of the oil guide plate and the main body of the inner wall of the casing, and the bulge is located below the lower edge of the oil guide plate to receive the oil dripping from the lower edge of the oil guide plate.

[0012] In order to guide the oil to the inner wall of the casing, the oil guide plate is inclined from top to bottom toward the side where the side wall of the casing is located.

[0013] In order to better receive the oil dripping from the oil guide plate, the vertical projection of the lower edge of the oil guide plate falls on the convex hull.

[0014] As an improvement, the distance between the lower edge of the oil guide plate and the corresponding side wall of the housing is recorded as L, and the height of the convex bulge relative to the main part of the inner wall of the housing is recorded as L1, wherein 3mm≤L1-L≤10mm. The above structural parameter design can ensure that the oil dripping from the oil guide plate can fall on the convex bulge, and on the other hand, it can avoid the side wall of the housing from being pressed too deeply to affect the overall aesthetics and strength.

[0015] In order to ensure that the oil dripping onto the bulge can be smoothly diverted downward, the bulge includes an upper inclined surface inclined from top to bottom toward the inside of the casing, a vertical surface extending downward from the bottom edge of the upper inclined surface, and a lower inclined surface connected to the bottom edge of the vertical surface and inclined from top to bottom toward the outside of the casing.

[0016] As an improvement, the angle formed by the upper inclined surface relative to the vertical surface is recorded as α, and the value range of α is: 20°≤α≤60°. The above angle design can avoid oil accumulation due to the oil not flowing down well due to the angle being too small, and can also avoid the oil flowing too fast due to the angle being too large and directly sliding down without flowing down along the side wall of the casing.

[0017] If the distance between the lower edge of the oil guide plate and the convex hull in the vertical direction is too small, contact may cause interference or resonance. If the distance is too large, the oil may move and fall during the process of dripping from the oil guide plate to the convex hull. Therefore, the distance between the two needs to be reasonably designed. The distance between the lower edge of the oil guide plate and the convex hull in the vertical direction is recorded as H, where the value range of H is: 3mm≤H≤10mm.

[0018] In order to adapt to the oil guide plate with a certain length, the convex hull is in the shape of a long strip extending in the horizontal direction. If the upper and lower dimensions of the long strip convex hull are too small, the vertical surface dimension is limited and the oil circuit cannot be well connected. If the upper and lower dimensions are too large, the appearance will be affected. Therefore, a reasonable design is required. Specifically, the upper and lower dimensions of the long strip convex hull are denoted as M, where 10mm≤M≤30mm.

[0019] In order to ensure that the oil guide plate is firmly fixed, the oil guide plate further has a connecting column extending toward the side wall of the casing near its lower edge, and the connecting column is connected to the side wall of the casing by a fastener.

[0020] As an improvement, the housing includes a fan rack, the top of the fan rack is provided with an air outlet plate, the oil guide plate is located in the fan rack, and the top of the oil guide plate is connected to the air outlet plate, and the side wall of the fan rack is correspondingly provided with the convex bump. It is conceivable that the oil guide plate can also be provided in the smoke hood, and the convex bump is correspondingly provided on the side wall of the smoke hood.

[0021] As a further improvement, an air outlet is provided on the air outlet plate, and an air guide cover with a diameter that gradually decreases from bottom to top is provided in the casing, the top port of the air guide cover is connected to the position of the air outlet of the air outlet plate, and the corresponding side wall of the air guide cover constitutes the oil guide plate.

[0022] The technical solution adopted by the utility model to solve the second technical problem is: a range hood, comprising the above-mentioned oil guide structure of the range hood.

[0023] Compared with the prior art, the advantages of the utility model are as follows: the profiling designed on the side wall of the casing enhances the structural strength of the casing and avoids noise generated by machine resonance. At the same time, the convex structure generated by the profiling on the inner wall of the casing is used to receive the oil dripping from the oil guide plate, so that the oil can flow smoothly downward along the inner wall of the casing. Such an oil path structure design allows a certain gap to be reserved between the lower edge of the oil guide plate and the main body of the inner wall of the casing, reducing the noise problem caused by resonance between the oil baffle plate and the casing, and avoiding the oil dripping directly from the oil guide plate onto the stove and affecting the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a three-dimensional structural schematic diagram of a range hood according to an embodiment of the utility model;

[0025] Figure 2 A three-dimensional cross-sectional view of a range hood according to an embodiment of the utility model;

[0026] Figure 3 A vertical cross-sectional view of a range hood according to an embodiment of the utility model;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0030] Figure 1-Figure 4 The oil guide structure of the range hood of the utility model and a preferred embodiment of the range hood are shown. The range hood includes a casing 1 and a centrifugal fan (not shown) arranged in the casing 1. The casing 1 generally includes a fan frame and a fume hood (not shown) arranged at the bottom of the fan frame. The inner cavity of the fan frame is connected to the inner cavity of the fume hood. The fume hood is provided with an air inlet, and external smoke can enter the fume hood through the air inlet. The centrifugal fan is arranged in the fan frame. When the centrifugal fan is in operation, negative pressure is generated, and external oil smoke can be sucked into the fume hood through the air inlet.

[0031] The fan frame generally includes a fan frame body 101 with an open front and a front cover plate 102 covering the front opening of the fan frame body 101. An air outlet plate 2 is provided at the top of the fan frame, and an air outlet 20 is provided on the air outlet plate 2. The air outlet 20 is connected to the outlet of the fan system, and exhausts the smoke through the air outlet cover 13 connected to the air outlet plate 2. An air guide cover 3 is also provided inside the fan frame, and the caliber of the air guide cover 3 gradually decreases from bottom to top. Specifically, the air guide cover 3 includes three side plates connected in sequence in the circumferential direction, and the three side plates correspond to the three side walls 10 of the fan frame body 101 in sequence. Each side plate is inclined from top to bottom toward one side of the side wall 10 of the fan frame, that is, it constitutes an oil guide plate 30. The top port of the air guide cover 3 is connected to the position where the air outlet of the air outlet plate 2 is located.

[0032] The oil guide plate 30 also has a connection column 31 extending toward the side wall 10 of the fan frame near its lower edge. The connection column 31 is connected to the side wall 10 of the fan frame by a fastener such as a screw. Two connection columns 31 may be provided. When fixed, the end of the connection column 31 abuts against the inner wall of the fan frame, and the screw may pass through the outside of the fan frame and connect to the connection column 31.

[0033] There is a certain gap 4 between the lower edge of each oil guide plate 30 and the inner wall body of the fan frame, that is, the lower edge of the oil guide plate 30 does not contact the inner wall body of the fan frame.

[0034] The wall of the fan frame body 101 of this embodiment has a protrusion 11 that is recessed toward the inside of the fan frame. The protrusion 11 is in the shape of a long strip extending in the left-right direction. A convex bump 12 that protrudes toward the inside of the casing 1 is formed in the area corresponding to the protrusion 11 on the inner wall of the fan frame. The convex bump 12 is also in the shape of a long strip extending in the horizontal direction and is located below the lower edge of the oil guide plate 30 to receive the oil dripping from the lower edge of the oil guide plate 30. The convex bump 12 is designed to be in the shape of a long strip in order to match the oil guide plate 30 having a certain length. In general, the length of the convex bump 12 should be extended as much as possible to reach or be slightly less than the length of the lower edge of the oil guide plate 30. If the upper and lower dimensions of the long strip-shaped convex hump 12 are too small, the size of its vertical surface 122 is limited and cannot be well connected to the oil circuit. If the upper and lower dimensions are too large, it will affect the appearance. Therefore, a reasonable design is required. Specifically, the upper and lower dimensions of the long strip-shaped convex hump 12 are denoted as M, where 10mm≤M≤30mm.

[0035] The convex bump 12 of this embodiment includes an upper inclined surface 121 inclined from top to bottom toward the inside of the wind frame, a vertical surface 122 extending downward from the bottom edge of the upper inclined surface 121, and a lower inclined surface 123 connected to the bottom edge of the vertical surface 122 and inclined from top to bottom toward the outside of the casing 1. Among them, the angle formed by the upper inclined surface 121 relative to the vertical surface 122 is recorded as α, and the value range of α is: 20°≤α≤60°. The above angle design can avoid the upper inclined surface 121 from accumulating oil due to the oil not being able to flow down well due to the angle being too small, and can also avoid the oil flowing too fast due to the angle being too large and directly sliding down without flowing down along the side wall 10 of the casing 1. Similarly, in order to ensure that the oil flows smoothly through the vertical surface 122 and the lower inclined surface 123 to the side wall 10 of the wind frame body 101, the size of the angle formed by the lower inclined surface 123 relative to the vertical is basically consistent with the above-mentioned α value.

[0036] like Figure 4 As shown, the vertical projection of the lower edge of the oil guide plate 30 falls on the convex hump 12 , specifically, falls on the upper inclined surface 121 of the convex hump 12 .

[0037] The distance between the lower edge of the oil guide plate 30 and the corresponding side wall 10 of the casing 1 is recorded as L, and the protruding height of the convex hump 12 relative to the main part of the inner wall of the casing 1 is recorded as L1, wherein 3mm≤L1-L≤10mm. On the one hand, this structural design can ensure that the oil dripping from the oil guide plate 30 can fall on the convex hump 12, and on the other hand, it can prevent the embossing 11 on the side wall 10 of the casing 1 from being too deep to affect the overall aesthetics and strength.

[0038] The distance between the lower edge of the oil guide plate 30 and the (upper edge of) convex hump 12 in the vertical direction is denoted as H. If the distance between the lower edge of the oil guide plate 30 and the convex hump 12 in the vertical direction is too small, contact may cause interference or resonance. If the distance is too large, the oil may move around and fall during the process of dripping from the oil guide plate 30 to the convex hump 12. Therefore, the distance between the two needs to be reasonably designed. Specifically, the value range of H is: 3mm≤H≤10mm.

[0039] The profile 11 designed on the side wall 10 of the casing 1 enhances the structural strength of the casing 1 and avoids noise caused by machine resonance. At the same time, the convex bump 12 structure generated by the profile 11 on the inner wall 10 of the casing 1 is used to receive the oil dripping from the oil guide plate 30, so that the oil can smoothly flow downward along the inner wall 10 of the casing 1. Such an oil path structure design allows a certain gap 4 to be reserved between the lower edge of the oil guide plate 30 and the inner wall body of the casing 1, thereby reducing the noise problem caused by resonance between the oil baffle plate and the casing 1, and also avoiding the oil dripping directly from the oil guide plate 30 onto the stove and affecting the user experience.

[0040] On the basis of the above embodiments, other embodiments can be obtained by replacing and improving the relevant technical features. For example, the housing 1 is not limited to the fan frame, but can also be a fume hood of a range hood or other box structures as an air duct, that is, the oil guide structure of this embodiment is not limited to being set on the fan frame, but can also be set on other box structures of the range hood suitable for arranging the oil path.

Claims

1. An oil guide structure for a range hood, comprising: Housing (1); An oil guide plate (30) is disposed in the casing (1) and is used to guide the received oil to the inner wall of the casing (1); The invention is characterized in that: the wall of the casing (1) has a protrusion (11) which is recessed toward the inside of the casing (1); a bulge (12) which protrudes toward the inside of the casing (1) is formed on the inner wall of the casing (1) in an area corresponding to the protrusion (11); a gap (4) is provided between the lower edge of the oil guide plate (30) and the main body of the inner wall of the casing (1); the bulge (12) is located below the lower edge of the oil guide plate (30) to receive the oil dripping from the lower edge of the oil guide plate (30).

2. The oil guide structure of the range hood according to claim 1, characterized in that: The oil guide plate (30) is inclined from top to bottom toward the side where the side wall (10) of the casing (1) is located.

3. The oil guide structure of the range hood according to claim 1, characterized in that: The vertical projection of the lower edge of the oil guide plate (30) falls on the convex hull (12).

4. The oil guide structure of the range hood according to claim 3, characterized in that: The distance between the lower edge of the oil guide plate (30) and the corresponding side wall (10) of the casing (1) is recorded as L, and the protruding height of the convex bump (12) relative to the main part of the inner wall of the casing (1) is recorded as L1, wherein 3mm≤L1-L≤10mm.

5. The oil guide structure of the range hood according to claim 3, characterized in that: The convex bump (12) comprises an upper inclined surface (121) inclined from top to bottom toward the inside of the housing (1), a vertical surface (122) extending downward from the bottom edge of the upper inclined surface (121), and a lower inclined surface (123) connected to the bottom edge of the vertical surface (122) and inclined from top to bottom toward the outside of the housing (1).

6. The oil guide structure of the range hood according to claim 5, characterized in that: The angle formed by the upper inclined surface (121) relative to the vertical surface (122) is denoted as α, and the value range of α is: 20°≤α≤60°.

7. The oil guide structure of a range hood according to any one of claims 1 to 6, characterized in that: The distance between the lower edge of the oil guide plate (30) and the convex hump (12) in the vertical direction is recorded as H, wherein the value range of H is: 3mm≤H≤10mm.

8. The oil guide structure of a range hood according to any one of claims 1 to 6, characterized in that: The convex hull (12) is in the shape of a long strip extending in the horizontal direction, and the upper and lower dimensions of the long strip convex hull (12) are denoted as M, wherein 10 mm≤M≤30 mm.

9. The oil guide structure of a range hood according to any one of claims 1 to 6, characterized in that: The oil guide plate (30) also has a connecting column (31) extending toward the side wall (10) of the casing (1) at a position adjacent to its lower edge, and the connecting column (31) is connected to the side wall (10) of the casing (1) via a fastener.

10. The oil guide structure of a range hood according to any one of claims 1 to 6, characterized in that: The housing (1) comprises a fan frame, the top of which is provided with an air outlet plate (2), the oil guide plate (30) is located in the fan frame, and the top of the oil guide plate (30) is connected to the air outlet plate (2), and the convex bump (12) is correspondingly provided on the side wall (10) of the fan frame.

11. The oil guide structure of the range hood according to claim 10, characterized in that: The air outlet plate (2) is provided with an air outlet, and the housing (1) is provided with an air guide cover (3) whose diameter gradually decreases from bottom to top, and the top port of the air guide cover (3) is connected to the position where the air outlet of the air outlet plate (2) is located, and the corresponding side wall (10) of the air guide cover (3) constitutes the oil guide plate (30).

12. A range hood, characterized in that: The invention comprises the oil guide structure of a range hood according to any one of claims 1 to 11.

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