CN111829037A

CN111829037A - Fume exhaust fan

Info

Publication number: CN111829037A
Application number: CN202010737941.9A
Authority: CN
Inventors: 徐梦玲; 徐敬龙
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2020-10-27
Anticipated expiration: 2040-07-28
Also published as: CN111829037B

Abstract

The invention discloses a range hood, which comprises a shell and a panel assembly arranged on the front side of the shell, wherein an air inlet is formed in the panel assembly, the range hood also comprises a noise reduction ring suction plate arranged on the front side of the panel assembly at intervals, the noise reduction ring suction plate corresponds to the air inlet, the noise reduction ring suction plate comprises a main body parallel to the front side of the panel assembly, the distance between the main body and the panel assembly is D1, the distance between the left side of the main body and the left side of the air inlet is D2, the distance between the right side of the main body and the right side of the air inlet is D3, the distance between the upper end of the main body and the upper end of the air inlet is D4, and the parameters meet: d1 is more than or equal to 25mm and less than or equal to 30mm, and D2/D1, D3/D1 and D4/D1 are all less than or equal to 0.5. Compared with the prior art, the invention has the advantages that: by arranging the distances D1, D2, D3 and D4 between the noise reduction ring suction plate and the panel component, a larger air inlet space is formed, oil smoke is sucked quickly, and the condition that a user blocks the sight when using the range hood can be avoided.

Description

Fume exhaust fan

Technical Field

The invention 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 absorbs most of oil smoke close to a cooking bench in an arc form by using a vortex air pressure principle, so that adverse effects on human health can be reduced, and the suction effect of a power source is basically not reduced because the power source is close to the cooking bench. The existing side-draft range hood, as disclosed in chinese patent with application number 201820315227.9, includes a housing, a fan, an air outlet, a decorative surrounding plate, an oil screen, an oil cup, an operating glass panel, a middle glass plate, a lower fixed glass plate, an electric push rod, two turning supports and a pivoting support, wherein a seat plate is arranged in the housing and fixedly connected with a top plate of an oil smoke collecting cavity, and a support plate passes through a guide hole and extends into the oil smoke collecting cavity; the main body of the electric push rod is fixed in the shell, the motor push rod is pivoted with a driving shaft hole of the driving rod part of the turning support on the left side, and the pivoting hole is coaxial with the shaft hole; the suspended end of the arc-shaped driven part is fixedly connected with the middle glass plate; the middle glass plate is fitted to the front surface of the cabinet between the operating glass panel and the lower fixing glass plate.

The range hood is used as a kitchen appliance necessary for families, the use comfort of the range hood is critical, and as mentioned above, in the existing range hood, a fan is usually directed to a user, and an inclined baffle is adopted, so that the fan has high noise and simultaneously shields the sight; the gas flow field has no accelerating channel, and is directly sucked into a fan system, so that the wind speed is low; and the oil drops of the smoke baffle are easy to drop, so that the cooking bench is polluted, even the cooked food is cooked, and poor user experience is brought.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a range hood aiming at the defects in the prior art, so that the oil smoke suction speed is improved, and the sight line is prevented from being shielded.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes casing and the panel components of setting in the casing front side, the air intake has been seted up on the panel components, its characterized in that: the range hood still sets up the ring suction disc that makes an uproar that falls in the panel subassembly front side including the interval, it corresponds with the air intake to make an uproar to fall the ring suction disc, fall the ring suction disc that makes an uproar and include the main part parallel with the front side of panel subassembly, interval between main part and the panel subassembly is D1, interval between main part left side and the air intake left side is D2, interval between main part right side and the air intake right side is D3, interval between main part upper end and the air intake upper end is D4, and above-mentioned parameter satisfies: d1 is more than or equal to 25mm and less than or equal to 30mm, and D2/D1, D3/D1 and D4/D1 are all less than or equal to 0.5.

In order to guide the condensed oil on the main body to flow downwards for collection, the noise reduction ring suction plate further comprises a guide folding edge, the guide folding edge is formed by bending the lower end of the main body backwards, and the guide folding edge gradually inclines downwards from front to back.

Preferably, the length of the flow guide folding edge of the noise reduction ring suction plate is A, and the requirement that A is more than or equal to 72 mm and is less than or equal to 78mm is met, and the included angle between the main body and the flow guide folding edge is B, and the requirement that B is more than or equal to 40 degrees and is less than or equal to 45 degrees is met.

Preferably, in order to reduce noise, the flow guide folding edge of the noise reduction ring suction plate is provided with a noise reduction hole.

Preferably, for the effect of holding together the cigarette for playing to discharge the oil smoke high-efficiently, panel components includes the panel support, be formed with on the panel support by the sunken cigarette chamber that holds together backward forward, the front end that holds together the cigarette chamber forms the air intake, on the panel support, be located hold together the cigarette chamber rear side and open and be equipped with the through-hole that supplies the oil smoke to pass through, in the casing, be located the panel components rear side and be provided with fan system.

Furthermore, in order to form an airflow accelerating channel, the oil smoke is quickly drained to a fan system of the main box body, the front side of the fan system is tightly attached to the rear side of the part of the panel support forming the smoke collecting cavity, an air inlet ring is arranged at an air inlet of the fan system, and the air inlet ring is fixed at a through hole of the panel support.

Further, for the convenience of rectification and filtration, the air inlet circle includes annular installation department, the centre of installation department is provided with the filter screen, the installation department is fixed with panel support's through-hole periphery, the filter screen is whole protruding forward, the interval between foremost end and the main part of the filter screen of air inlet circle is D5 to satisfy 15 and be less than or equal to D5 and be less than or equal to 20 mm.

To facilitate effective control of the generation of vortices and avoid flow squeal, the body of the noise reduction ring suction plate has a first center a1, the air inlet ring has a second center a2, the fan system has a third center A3, the second center a2 of the air inlet ring is located below and to the right of the first center a1 of the body of the noise reduction ring suction plate, and the third center A3 of the fan system is located above and to the right of the first center a1 of the body of the noise reduction ring suction plate.

In order to guide condensed oil, the flow guide folding edge is at least provided with a backward bent folding edge at the bottom end, so that a first oil guide groove is formed at the bottom end at least, a first oil leakage hole is formed in the folding edge at the bottom end, a second oil guide groove which is sunken downwards is formed in the front side of the bottom of the smoke gathering cavity of the panel support, a second oil leakage hole is formed in the bottom of the second oil guide groove, and an oil cup is arranged at the bottom of the shell.

In the oil smoke gets into fan system for the guide, the production of effective control vortex, air inlet circle is still including setting up the water conservancy diversion portion at the installation department internal periphery, water conservancy diversion portion backward, along the installation department axial extend into in the air inlet of fan system, the periphery wall of water conservancy diversion portion in axial ascending projection, by the installation department to inside the fan system, be inside bellied arc.

Compared with the prior art, the invention has the advantages that: by arranging the distances D1, D2, D3 and D4 between the noise reduction ring suction plate and the panel component, a larger air inlet space is formed, oil smoke is sucked quickly, and the condition that a user blocks the sight when using the range hood can be avoided; through the arrangement of the length A and the angle B of the flow guide folding edge of the noise reduction ring suction plate, grease condensed on the noise reduction ring suction plate and the upper edge of the panel support can flow to the oil cup, and the grease is prevented from dropping on a cooking bench and polluting cooked food; through the arrangement of the distance D5 between the air inlet ring and the noise reduction ring suction plate and the design of the relative position of the air inlet ring and the fan system, air flow can be smoothly led into the air inlet second position of the flow field from the air inlet first position of the flow field; an airflow accelerating channel is formed by interaction of a smoke collecting deep cavity of the panel bracket and the air inlet ring, oil smoke is quickly guided to a fan system in the shell, and squeaking is avoided; the arc edge design of the air inlet ring can guide oil smoke gas flow into a fan system, and effectively control the generation of vortex; through the setting of the relative position relationship of the air inlet ring, the fan system and the noise reduction ring suction plate, the air flow can be smoothly led into the air inlet second position of the flow field from the air inlet first position of the flow field along the double-path clockwise spiral, so that the generation of vortex can be effectively controlled, and the generation of air flow squeal can be avoided.

Drawings

Fig. 1 is a schematic structural diagram of a range hood according to an embodiment of the present invention;

FIG. 2 is a front view of a range hood according to an embodiment of the present invention;

FIG. 3 is a side view of a range hood in accordance with an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a range hood in accordance with an embodiment of the present invention;

FIG. 5 is a front view of a hidden noise reduction ring suction plate of the range hood according to the embodiment of the present invention;

FIG. 6 is a front view of a panel assembly of a range hood according to an embodiment of the present invention;

fig. 7 is a front view of a panel bracket of a panel assembly of a range hood according to an embodiment of the present invention;

FIG. 8 is a schematic view of a noise reduction ring suction plate of the range hood according to the embodiment of the present invention;

fig. 9 is a schematic view of an air inlet ring of the range hood according to the embodiment of the 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 4, a range hood is a side-draft range hood, and includes a housing 1, a panel assembly 2 disposed at a front side of the housing 1, and a fan system 3 disposed in the housing 1, wherein an air inlet 21 is formed on the panel assembly 2, and a noise reduction ring suction plate 4 is disposed at the air inlet 21.

Referring to fig. 4 to 7, the panel assembly 2 includes a panel bracket 22 and a panel 23 disposed at the front side of the panel bracket 22, a smoke collecting cavity 221 recessed from front to back is formed on the panel bracket 22, the front end of the smoke collecting cavity 221 forms the air inlet 21, and a through hole 222 is formed on the panel bracket 22 and located at the back side of the smoke collecting cavity 221. The panel 23 is opened at a position corresponding to the smoke collection chamber 221, so that the entire panel 23 is formed in a zigzag shape and fixed to the panel holder 22 by means of bonding or the like. The noise reduction ring suction plate 4 is arranged at intervals on the front side of the panel 23 and on the front side of the air inlet 21, so that a gap between the noise reduction ring suction plate 4 and the panel assembly 2 forms a ring suction passage for oil smoke to enter.

Referring to fig. 8, the noise reduction ring suction plate 4 includes a main body 41 and a guide folding edge 42, the guide folding edge 42 is formed by bending the lower end of the main body 41 backward, and the guide folding edge 42 is gradually extended downward from the front to the back. The guide folding edge 42 is provided with noise reduction holes 421, in this embodiment, the noise reduction holes 421 are respectively disposed on the left and right sides of the guide folding edge 42, and each side has three noise reduction holes 421. The guide folding edge 42 is provided with a folding edge 422 which is bent backwards at least at the bottom end, in this embodiment, including the bottom end and the left and right sides, so that at least a first oil guide groove 423 is formed at the bottom end, and a first oil leakage hole 424 is formed on the folding edge 422 at the bottom end, so that condensed oil collected in the first oil guide groove 423 flows downwards and is finally collected in the oil cup 6 at the bottom of the housing 1.

The panel bracket 22 is formed with a second oil guiding groove 223 depressed downwards at the front side of the bottom of the smoke gathering cavity 221, and a second oil leaking hole 224 is formed at the bottom of the second oil guiding groove 223, so that the condensed oil collected in the second oil guiding groove 223 flows downwards and is finally collected in the oil cup 6 at the bottom of the housing 1.

The front side of the fan system 3 is tightly attached to the rear side of the part of the panel bracket 22 forming the smoke collecting cavity 221, an air inlet ring 5 is arranged at an air inlet of the fan system 3, and the air inlet ring 5 is fixed at the through hole 222 of the panel bracket 22. Referring to fig. 4 and 9, the air inlet ring 5 includes an annular mounting portion 51 and a flow guiding portion 52 disposed on an inner periphery of the mounting portion 51, the flow guiding portion 52 extends backward into the air inlet of the blower system 3, and a filter screen 53 is disposed in the middle of the mounting portion 51. The mounting portion 51 is fixed to the front side periphery of the through hole 222 of the panel bracket 22. The filter net 53 is integrally protruded forwards, preferably, is in a spherical crown shape, and not only plays a role of filtering, but also plays a role of noise reduction. The screen 53 has a plurality of R-corner diamond mesh openings 531 arranged thereon, the total area of the mesh openings 531 being S2, where 0.1 × 3.14 × C < S2<0.125 × 3.14 × C, C being the diameter of the through-holes 222 of the panel bracket 22. The diversion part 52 extends backwards into an air inlet of the fan system 3 along the axial direction of the installation part 51, and the projection of the outer peripheral wall of the diversion part 52 in the axial direction is in an inward convex arc shape towards the inside of the fan system 3 through the installation part 51. In the present embodiment, it is preferable that the axial height of the flow guiding portion 52 is 6mm, and the radius of the arc is 30mm, so as to perform a flow guiding function and effectively control the generation of the vortex.

Referring to fig. 2 and 4 again, the noise reduction ring suction plate 4 is located at the first position of the flow field intake air, the main body 41 of the noise reduction ring suction plate 4 is parallel to the panel 23, the distance between the main body 41 of the noise reduction ring suction plate 4 and the panel 23 (the distance from the main body 41 to the panel 23 in the vertical direction) is D1, the distance between the left side of the main body 41 of the noise reduction ring suction plate 4 and the left side of the air inlet 21 (the horizontal distance in the left-right direction) is D2, the distance between the right side of the main body 41 and the right side of the air inlet 21 is D3 (the horizontal distance in the left-right direction), and the distance between the upper end of the main body 41 and the upper end of the air inlet 21 (the distance in the oblique direction. The above parameters satisfy: d1 is more than or equal to 25mm and less than or equal to 30mm, and D2/D1, D3/D1 and D4/D1 are all less than or equal to 0.5.

The length of the guide folding edge 42 of the noise reduction ring suction plate 4 is A (the size between the upper end and the lower end), and satisfies that A is more than or equal to 72 and less than or equal to 78mm, the included angle between the main body 41 and the guide folding edge 42 is B, and satisfies that B is more than or equal to 40 degrees and less than or equal to 45 degrees. The total area of the noise reduction holes 421 on the guide folding edge 42 is S1, and satisfies that S1 is less than or equal to 40cm³. The air inlet ring 5 is located at a second position of air inlet of the flow field, the distance (the distance from the main body 41 in the vertical direction) between the foremost end of the filter screen 53 of the air inlet ring 5 and the main body 41 is D5, and D5 is more than or equal to 15 and less than or equal to 20 mm. In the mounted state, the main body 41 of the noise reduction ring suction plate has a first center a1, the air inlet ring 5 has a second center a2, the fan system 3 has a third center A3, the second center a2 of the air inlet ring 5 is located at the lower right of the first center a1 of the main body 41 of the noise reduction ring suction plate, and the third center A3 of the fan system 3 is located at the upper right of the first center a1 of the main body 41 of the noise reduction ring suction plate 4.

Through the arrangement of the parameters D1, D2, D3 and D4, a larger air inlet space is formed, oil smoke is sucked quickly, and the condition that a user blocks the sight when using the range hood is avoided; through the parameter D5, the relative position relation setting of the air inlet ring 5 and the noise reduction ring suction plate 4 and the relative position relation setting of the fan system 3 and the noise reduction ring suction plate 4, the air flow can be smoothly and spirally introduced into the flow field air inlet second position from the flow field air inlet first position. Referring to fig. 2 and 4, when the range hood is in operation, for the parallel surface of the main body 41 of the noise reduction ring suction plate 4, the peripheral air flow uniformly enters the center of the gap between the main body 41 and the air inlet ring 5 (corresponding to the first center a1 of the main body 41), and clockwise enters the second center a2 of the air inlet ring 5 from right to bottom, and then enters the third center A3 of the fan system 3 from top to bottom along with the movement of the impeller of the fan system 3, and then is discharged by the air outlet cover 7 (connected with the air outlet of the fan system 3), so as to form a first clockwise spiral path L1. For the vertical plane of the main body 41 of the noise reduction sucking ring plate 4, the air flow enters the second center a2 from the center of the gap between the main body 41 and the air inlet ring 5 (corresponding to the first center a1 of the main body 41) downwards, then enters the third center A3 of the fan system 3 upwards along with the movement of the impeller of the fan system 3, and is discharged by the air outlet cover 7, so as to form a second clockwise spiral path L2. The guide part 52 of the air inlet ring 5 enables air flow to flow along the volute molded line of the fan system 3 in an accelerating way, the meshes 531 enable the air flow to be in order and proper, the rectification effect is achieved, noise can be effectively reduced, the generation of vortex can be effectively controlled through double-clockwise spiral suction, air flow whistling is avoided, an air flow accelerating channel is formed through the interaction of the smoke collecting cavity 221 of the panel support 22 and the air inlet ring 5, and oil smoke is quickly guided into the fan system of the main box body.

Through the setting of length A and contained angle B of the water conservancy diversion hem 42 of the noise reduction ring suction plate 4, can make the grease that condenses on the upper edge of noise reduction ring suction plate 4 and panel assembly 2 flow into the hem, lead into the second oil guide groove 223 of following under panel support 22 through the leading-in first oil leak hole 424 of water conservancy diversion hem 42 to flow to oil cup 6 through second oil leak hole 224, prevent that the grease from dripping the top of a kitchen range, polluting the food at the culinary art.

Claims

1. The utility model provides a range hood, includes casing (1) and panel components (2) of setting in casing (1) front side, air intake (21), its characterized in that have been seted up on panel components (2): the range hood still includes that the interval ground sets up the ring that falls of falling at panel subassembly (2) front side and inhales board (4), it inhales board (4) and air intake (21) to fall the ring of falling, fall the ring and inhale board (4) and include main part (41) parallel with the front side of panel subassembly (2), interval between main part (41) and panel subassembly (2) is D1, interval between main part (41) left side and air intake (21) left side is D2, interval between main part (41) right side and air intake (21) right side is D3, interval between main part (41) upper end and air intake (21) upper end is D4, above-mentioned parameter satisfies: d1 is more than or equal to 25mm and less than or equal to 30mm, and D2/D1, D3/D1 and D4/D1 are all less than or equal to 0.5.

2. The range hood of claim 1, wherein: the noise reduction ring suction plate (4) further comprises a flow guide folding edge (42), the flow guide folding edge (42) is formed by bending the lower end of the main body (41) backwards, and the flow guide folding edge (42) gradually inclines downwards and extends forwards and backwards.

3. The range hood of claim 2, wherein: the length of the flow guide folding edge (42) of the noise reduction ring suction plate (4) is A, and satisfies that A is more than or equal to 72 and is less than or equal to 78mm, and the included angle between the main body (41) and the flow guide folding edge (42) is B, and satisfies that B is more than or equal to 40 degrees and is less than or equal to 45 degrees.

4. The range hood of claim 2, wherein: and a noise reduction hole (421) is formed in the flow guide folding edge (42) of the noise reduction ring suction plate (4).

5. The range hood of claim 1, wherein: panel components (2) are including panel support (22), be formed with on panel support (22) by the sunken cigarette chamber (221) that hold together in the front backward, the front end that holds together cigarette chamber (221) forms air intake (21), panel support (22) are gone up, are located to hold together cigarette chamber (221) rear side and have been opened through-hole (222) that supply the oil smoke to pass through, casing (1) inside, be located panel components (2) rear side and be provided with fan system (3).

6. The range hood of claim 5, wherein: the front side of the fan system (3) is attached to the rear side of the part, forming the smoke collecting cavity (221), of the panel support (22), an air inlet ring (5) is arranged at an air inlet of the fan system (3), and the air inlet ring (5) is fixed to a through hole (222) of the panel support (22).

7. The range hood of claim 6, wherein: air inlet circle (5) include annular installation department (51), the centre of installation department (51) is provided with filter screen (53), installation department (51) are fixed with through-hole (222) periphery of panel support (22), filter screen (53) are whole protruding forward, the interval between foremost end and main part (41) of filter screen (53) of air inlet circle (5) is D5 to satisfy 15 and be less than or equal to D5 and be less than or equal to 20 mm.

8. The range hood of claim 6, wherein: the main body (41) of the noise reduction ring suction plate has a first center A1, the air inlet ring (5) has a second center A2, the fan system (3) has a third center A3, the second center A2 of the air inlet ring (5) is located at the lower right of the first center A1 of the main body (41) of the noise reduction ring suction plate, and the third center A3 of the fan system (3) is located at the upper right of the first center A1 of the main body (41) of the noise reduction ring suction plate (4).

9. The range hood of claim 5, wherein: the water conservancy diversion hem (42) are provided with turn-ups (422) of buckling backward at the bottom at least, form first oil groove (423) of leading at the bottom at least from this, lie in and seted up first oil leak hole (424) on turn-ups (422) of bottom, panel support (22) are formed with oil groove (223) are led to the second of undercut in the bottom front side of holding together cigarette chamber (221), second oil leak hole (224) have been seted up to the bottom of oil groove (223) is led to the second, casing (1) bottom is provided with oil cup (6).

10. The range hood of claim 7, wherein: air inlet circle (5) are still including setting up water conservancy diversion portion (52) at installation department (51) internal week, water conservancy diversion portion (52) backward, along installation department (51) axial extension in the air inlet of fan system (3), the periphery wall of water conservancy diversion portion (52) is at axial ascending projection, by installation department (51) to fan system (3) inside, be inside bellied arc.