CN215863618U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises a smoke collecting hood, wherein the smoke collecting hood comprises a hood body, the hood body is upwards sunken from the bottom to form a smoke collecting cavity, an air inlet is formed in the hood body, the air inlet is positioned at the top of the smoke collecting cavity, the parts of the top of the hood body, which are positioned at the left side and the right side of the air inlet, are in a shape of transversely extending, the positions of the top of the hood body, which are positioned at the left side and the right side of the air inlet, are respectively provided with a profiling, and the profiling is formed by downwards sunken part of the hood body; a filter screen is arranged in the smoke collection cavity and can receive oil liquid dripped from the lower surface of the pressing mold. Compared with the prior art, the utility model has the advantages that: the wall surface at the top of the smoke collection cavity is designed with a downward sunken compression mould, so that oil condensed on the wall surface can flow downwards along the compression mould and can drop downwards onto the filter screen, an oil way under the local promotion space of the smoke collection cavity of the top-suction type range hood is realized, and the oil at the top of the smoke collection cavity can be prevented from dropping onto a cooking bench while a large ventilation area is ensured.

Description

Fume exhaust fan

Technical Field

The utility model relates to an oil fume purification device, in particular to a range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

The side-draft range hood generally comprises a side draft type range hood and a top draft type range hood, and because the surface slope of the smoke collection cavity is large, oil condensed in the smoke collection cavity can smoothly flow into the oil cup along the surface of the smoke collection cavity. The top-suction type range hood, disclosed in the chinese patent with the application number 201910770207.X, includes a casing, a wind cabinet, a smoke collecting hood, an oil mesh and an oil cup, wherein the wind cabinet is installed in the casing, an impeller is installed in the wind cabinet, the smoke collecting hood is installed at the bottom of the casing, the oil mesh is installed at an air inlet of the smoke collecting hood, and the oil cup is installed at the bottom of the oil mesh.

The existing top-suction type range hood has the potential safety hazard of oil dripping because the whole thickness of the smoke collection cavity is thin, so that a plane with a large inclination angle cannot be formed for guiding oil.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a range hood to avoid oil dripping aiming at the defects in the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes the collection petticoat pipe, the collection petticoat pipe is including the cover body, the cover body is upwards sunken by the bottom and is formed with collection smoke chamber, the air intake has been seted up on the cover body, the air intake is located the top in collection smoke chamber, its characterized in that: the parts, positioned on the left side and the right side of the air inlet, of the top of the cover body are in a transversely extending shape, the positions, positioned on the left side and the right side of the air inlet, of the top of the cover body are respectively provided with a profiling, and the profiling is formed by downwards sinking one part of the cover body; a filter screen is arranged in the smoke collection cavity and can receive oil liquid dripped from the lower surface of the pressing mold.

Preferably, each of the left and right sides of the cover has at least two profiling, respectively, the profiling being juxtaposed in the left-right direction.

In order to facilitate the filter screen to receive oil dropped by the profiling, the filter screen comprises at least two meshes, each mesh is in a long strip shape and extends in the front-back direction, each mesh is arranged at intervals in the left-right direction, the part between the adjacent meshes forms an oil guide groove, the profiling corresponds to the oil guide groove, and the lowest point of the profiling is positioned above the corresponding oil guide groove.

In order to ensure that the filter screen can catch the dropped oil and avoid the oil drops from overflowing or splashing, the pressing die is provided with a straight transition region at the bottom, the width of the transition region in the left-right direction is D1, the width of the oil guide groove in the left-right direction is D2, and D2 > D1 is met.

In order to avoid the overflow of oil, the meshes are flanged holes with the left and right sides turned upwards.

Preferably, in order to facilitate the oil to flow downwards along the profiling, the profiling is in a V shape, and the included angles between the left side surface and the right side surface of the profiling and the horizontal direction are both 10-40 degrees.

Preferably, in order to ensure the consistency of the appearance of the smoke collecting hood and facilitate the arrangement of a control panel, a lighting device and the like on the smoke collecting hood, the hood body comprises an inner hood and an outer hood arranged outside the inner hood, the inner hood is formed by upwards sinking the bottom of the inner hood into the smoke collecting cavity, and the profiling is formed on the inner hood.

In order to facilitate the carrying of oil on the filter screen, an oil cup is arranged at the bottom of the rear side of the smoke collecting hood, and the rear end of the filter screen is positioned above the oil cup.

Preferably, in order to facilitate the oil on the filter screen to flow into the oil cup, the filter screen is inclined downwards from front to back, the inclination angle of the filter screen relative to the horizontal direction is alpha 2, and 12.5 degrees to alpha 2 degrees is satisfied, and the inclination angle is less than or equal to 25 degrees.

Compared with the prior art, the utility model has the advantages that: the wall surface at the top of the smoke collection cavity is designed with the compression mold which is sunken downwards, so that oil condensed on the wall surface can flow downwards along the compression mold and can drop downwards onto the filter screen, an oil way under the local space of the smoke collection cavity of the top-suction type range hood is realized, a large ventilation area can be ensured, and meanwhile, the oil at the top of the smoke collection cavity can be prevented from dropping onto a cooking bench through a single-layer screen.

Drawings

FIG. 1 is a schematic view of a range hood according to an embodiment of the present invention;

fig. 2 is a sectional view (left-right direction section) of a hidden fan frame of the range hood according to the embodiment of the present invention;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is an enlarged view of a portion I of FIG. 3;

FIG. 5 is a schematic view of a portion of the smoke collection hood of the range hood in accordance with the embodiment of the present invention;

fig. 6 is a sectional view (front-rear section) of a hidden fan frame of a range hood according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 5, a range hood, which is a ceiling range hood, includes a fume collecting hood 1 and a fan frame 2 disposed above the fume collecting hood 1, and a fan system (not shown) is disposed in the fan frame 2.

The smoke collecting cover 1 comprises an inner cover 11 and an outer cover 12 arranged outside the inner cover 11, the inner cover 11 and the outer cover 12 form a cover body, the inner cover 11 is upwards sunken from the bottom to form a smoke collecting cavity 13, an air inlet 14 is formed in the cover body, and the air inlet 14 is located at the top of the smoke collecting cavity 13, namely the connection position of the smoke collecting cover 1 and the fan frame 2. The air inlet 14 fluidly communicates the smoke collection chamber 13 with the interior of the air frame 2, so that the oil smoke can enter the air frame 2 from the smoke collection chamber 13 through the air inlet 14 and be discharged by the fan system in the air frame 2. The top of the outer cover 12 is preferably horizontal and the top of the inner cover 11 is generally horizontal. The cover may also comprise only the inner cover 11.

The top of the inner cover 11 (the top of the smoke collection chamber 13) is located on the left and right sides of the air inlet 14 and is generally in a laterally extending shape, where the lateral extension is a state where the inner cover is not inclined or is nearly horizontal with respect to the horizontal direction. Because the inner cover 11 cannot be made into an inclined shape to guide oil due to the limitation of the whole thickness of the smoke collecting hood 1, the profiling 15 are respectively arranged at the left and right sides of the air inlet 14 at the top of the inner cover 11, and the profiling 15 is formed by sinking a part of the inner cover 11 downwards, so that the oil condensed by the inner cover 11 can be gathered on the bottom curve of the profiling 15. The profiling 15 on each side can be one, preferably at least two, and are arranged side by side in the left-right direction to form a regular array structure. In the present embodiment, the longitudinal section of the die 15 is substantially V-shaped, each die 15 is formed in a zigzag shape as a whole, and the included angles between the left and right side faces and the horizontal direction are both α 1, and preferably, α 1 is in a range of 10 ° to 40 °. α 1 may be equal or unequal on the left and right sides. The profiling 15 has a flat, smooth transition region 151 at the bottom.

Alternatively, the whole of each die 15 may be formed into a wave shape, a sine wave shape, or the like.

In order to further expand the air intake area, a filter screen 3 is arranged in the smoke collection cavity 13, and the filter screen 3 extends left and right to nearly fully occupy the smoke collection cavity 13. The filter net 3 is preferably a grid net, the filter net 3 includes at least two net holes 31, each net hole 31 is elongated and extends in the front-rear direction, each net hole 31 is arranged at intervals in the left-right direction, the net holes 31 are flanged holes (the left and right sides are flanged upwards), so that the part between the adjacent net holes 31 constitutes the oil guide groove 32. Referring to fig. 6, the screen 3 is gradually inclined downward from the front to the rear. The inclination angle of the filter screen 3 relative to the horizontal direction is alpha 2, and the preferred interval is more than or equal to 12.5 degrees and less than or equal to alpha 2 and less than or equal to 25 degrees. An oil cup 4 is arranged at the bottom of the rear side of the smoke collecting hood 1, and the rear end of the filter screen 3 is positioned above the oil cup 4, so that the filter screen 3 can guide oil of the filter screen into the oil cup 4.

Referring to fig. 2-4, each die 15 has an oil guide groove 32, and the lowest point of the die 15 is located above the corresponding oil guide groove 32, so that the oil on the lower surface of the top of the smoke collection chamber 13 can be just guided to the filter screen 3. The width (the size in the left-right direction) of the transition region 151 of the die form 15 is D1, the width (the size in the left-right direction) of the oil guide groove 32 is D2, and in order to ensure that the filter screen 3 can receive the dripped oil and avoid the oil drops from overflowing or splashing, the requirements that D2 is greater than D1, and preferably that D2 is greater than or equal to D1+5mm are met.

Claims (9)

1. The utility model provides a range hood, includes collection petticoat pipe (1), collection petticoat pipe (1) is including the cover body, the cover body is upwards sunken by the bottom and is formed with collection smoke chamber (13), air intake (14) have been seted up on the cover body, air intake (14) are located the top of collection smoke chamber (13), its characterized in that: the parts, positioned on the left side and the right side of the air inlet (14), of the top of the cover body are in a transversely extending shape, the positions, positioned on the left side and the right side of the air inlet (14), of the top of the cover body are respectively provided with a profiling (15), and the profiling (15) is formed by downwards sinking one part of the cover body; be provided with filter screen (3) in collection smoke chamber (13), oil that die mould (15) lower surface drippage can be accepted in filter screen (3).

2. The range hood of claim 1, wherein: each of the left and right sides of the cover body is provided with at least two profiling (15), and the profiling (15) are arranged in parallel in the left-right direction.

3. The range hood of claim 1 or 2, wherein: the filter screen (3) comprises at least two meshes (31), each mesh (31) is long-strip-shaped and extends in the front-rear direction, each mesh (31) is arranged at intervals in the left-right direction, the part between every two adjacent meshes (31) forms an oil guide groove (32), the compression type (15) corresponds to the oil guide groove (32), and the lowest point of the compression type (15) is positioned above the corresponding oil guide groove (32).

4. The range hood of claim 3, wherein: the profiling (15) has a straight transition region (151) at the bottom, the width of the transition region (151) in the left-right direction is D1, the width of the oil guide groove (32) in the left-right direction is D2, and D2 > D1 is satisfied.

5. The range hood of claim 3, wherein: the meshes (31) are flanging holes with upward flanging at the left side and the right side.

6. The range hood of claim 1 or 2, wherein: the profiling (15) is V-shaped, and the included angles between the left side surface and the right side surface of the profiling (15) and the horizontal direction are both 10-40 degrees.

7. The range hood of claim 1 or 2, wherein: the cover body comprises an inner cover (11) and an outer cover (12) arranged outside the inner cover (11), the inner cover (11) is upwards sunken from the bottom to form the smoke collection cavity (13), and the profiling (15) is formed on the inner cover (11).

8. The range hood of claim 1 or 2, wherein: an oil cup (4) is arranged at the bottom of the rear side of the smoke collecting hood (1), and the rear end of the filter screen (3) is positioned above the oil cup (4).

9. The range hood of claim 8, wherein: the filter screen (3) is gradually inclined downwards from front to back, the inclination angle of the filter screen (3) relative to the horizontal direction is alpha 2, and the alpha 2 is more than or equal to 12.5 degrees and less than or equal to 25 degrees.

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