CN112710015A

CN112710015A - Fume exhaust fan

Info

Publication number: CN112710015A
Application number: CN202110029039.6A
Authority: CN
Inventors: 蔡帆; 叶冯旭; 俞挺
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-04-27
Anticipated expiration: 2041-01-11
Also published as: CN112710015B

Abstract

The invention discloses a range hood, which is a top-suction range hood and comprises a smoke collecting hood and a smoke guide plate assembly, wherein an air inlet is formed in the smoke collecting hood, the smoke guide plate assembly comprises a smoke guide plate arranged below the air inlet and an oil collecting part seamlessly arranged on the rear side of the smoke guide plate, the oil collecting part is sunken downwards from the top surface to form an oil collecting groove, a hanging frame for hanging the oil collecting part is arranged at the bottom of the smoke collecting hood, and the bottom end of the hanging frame is attached to the rear side of the top of the oil collecting part. Compared with the prior art, the invention has the advantages that: the bottom end of the hanging frame for hanging the oil collecting part is attached to the oil collecting part, so that a negative pressure area is prevented from being generated at the rear side, the problem of oil dripping after oil accumulation at the front side of the oil collecting part and the problem of wall hanging oil caused by the negative pressure area at the rear side are solved, meanwhile, the negative pressure area is optimized into three by four in the prior art, the air volume of each negative pressure area is improved, the oil smoke absorption effect of the three negative pressure areas is improved, the oil smoke escape of the left end, the right end and the front end of the oil smoke collecting cover is reduced, and the oil smoke absorption effect of the whole machine is.

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.

Currently, the common range hoods on the market include a top suction type, a side suction type and a bottom suction type. The top-suction type range hood adopts the oil smoke rising principle, generates a negative pressure area right above a cooking bench, sucks and exhausts naturally rising oil smoke generated during cooking, and has the advantages of fashionable and concise appearance, larger air volume, larger space suitability and capability of catching oil smoke far away from the cooking bench.

Referring to fig. 12 and 15, a conventional top-suction range hood includes a smoke collecting hood 1 ' and a fan frame 2 ' disposed above the smoke collecting hood 1 ', a smoke guide plate 4 ' disposed below an air inlet of the smoke collecting hood 1 ', and an oil cup 5 ' disposed at a bottom of a rear side of the smoke collecting hood 1 '. The oil cup 5 'is an independent component, and the installation mode is usually that the folded edges 51' at the left and right ends of the oil cup 5 'are clamped into the hook groove at the bottom of the smoke collecting hood 1'. Not only the distance between the hook grooves is small, and the two ends of the oil cup 5' need to be operated simultaneously, but also the visualization degree is extremely low in the installation process, and the whole installation is very laborious. When the oil cup 5 'is disassembled, due to the design that the hook groove is internally provided with the positioning and clamping structure for the upper folded edge 51' of the oil cup 5 ', the oil cup needs to be slightly forced outwards during disassembly, and the risk of oil splashing in the oil cup 5' caused by excessive force can exist. In addition, the oil cup 5' is usually formed by tailor welding and is in a slender groove shape, so that cleaning dead corners exist, and the oil cup is not easy to clean.

Referring to fig. 12 to 14, after the oil cup 5 'is installed, a gap exists between the oil cup and the smoke collecting hood 1' in the vertical direction, and a gap exists between the oil cup and the wall 100 in the front-rear direction. The air inlet is provided with the smoke guide plate 4 ', so that negative pressure generated by upward air suction of the fan system can be diffused to the periphery of the smoke guide plate 4 ', namely, negative pressure regions can be formed on the periphery of the smoke guide plate 4 ', and as shown by arrows in figure 12, smoke can be sucked in the front, the rear, the left and the right negative pressure regions. It is advantageous to suck the oil smoke in the left, right and front directions, but when the oil smoke is sucked in the rear direction, a part of the oil smoke will impact on the upper edge of the oil cup 5 ' along the smoke guide plate 4 ', and then be sucked from the gap between the smoke guide plate 4 ' and the oil cup 5 ', as shown by the arrow in fig. 14, because the gap is small, the speed of the oil smoke reaching the gap will decrease rapidly, the oil smoke will condense at the edge of the oil cup 5 ', and oil drops will form to drop along the oil cup onto the cooking bench for a little time. In addition, most of the oil smoke will follow the inclined plane at the front side of the oil cup 5 ', pass through the gap between the oil cup 5' and the wall 100, and then be sucked into the range hood through the gap between the oil cup 5 'and the smoke collecting hood 1', as shown by the arrow in fig. 13. However, when the oil smoke passes through the gap between the oil cup 5 'and the wall 100, the oil smoke will be rapidly reduced in speed, and the oil smoke will form a "traffic jam" state in the gap between the oil cup 5' and the wall 100, so that most of the oil smoke passing through the gap will be condensed on the wall 100, and after a long time, oil drops will appear on the wall, thereby causing the common phenomenon of wall oil hanging in the market.

In addition, there is also an integrated smoke guide plate, which integrates the oil cup on the smoke guide plate, but still cannot solve the above-mentioned problems of oil hanging and oil dripping.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a range hood which can avoid wall hanging oil and oil dripping and simultaneously overcome the defects in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, for the ceiling type range hood, includes collection petticoat pipe and smoke deflector subassembly, the air intake has been seted up on the collection petticoat pipe, the smoke deflector subassembly is including setting up the collection oil portion of smoke deflector and seamless setting in the smoke deflector rear side in the air intake below, collection oil portion is by top surface undercut formation oil catch bowl, its characterized in that: the bottom of collection petticoat pipe is provided with the stores pylon that is used for articulating the collection oil portion, the bottom laminating of stores pylon is in the top rear side of collection oil portion.

For avoiding having clean dead angle, be convenient for clean smoke deflector subassembly, smoke deflector and collection oil portion integrated into one piece, the stretch forming of oil trap.

In order to facilitate the grease on the smoke guide plate to flow into the oil collecting groove, the front side wall of the oil collecting groove is formed by the rear side of the smoke guide plate and gradually inclines downwards, and the smoke guide plate gradually inclines downwards from front to back.

In order to realize visual operation when leading cigarette board unit mount, be provided with the couple on the lateral wall of collection oil portion, be provided with on the stores pylon and supply the couple by preceding couple seat of hanging the access after, it can dismantle with collection petticoat pipe and be connected to lead cigarette board front side.

Preferably, the cooperation structure of couple and couple seat does, the couple includes couple frame and the hook portion of setting on the couple frame, hook portion is shaft-like and extends in left and right directions, it hangs the groove to have seted up in the couple seat, both ends and front end all run through the couple seat about hanging the groove.

Preferably, the connection structure can be dismantled to smoke deflector and collection petticoat pipe does, smoke deflector's upper surface front side is provided with to bump and detains, collection petticoat pipe inboard is provided with bumps and detains the seat, bump and detain the seat cooperation with bumping and detain and make smoke deflector and collection petticoat pipe can dismantle the connection.

In the grease of the convenient collection petticoat pipe rear side flowed into the oil trap along the stores pylon, the leading flank of stores pylon is provided with leads the oil strip, lead still by the preceding downward sloping of stores pylon front side when extending about the oil strip, the front end that leads the oil strip is located the oil trap top.

For avoiding the oil smoke from the clearance air inlet between collection petticoat pipe rear side below and the stores pylon, the stores pylon of being convenient for simultaneously fixes a position when the installation the top laminating of stores pylon is in the rear side of collection petticoat pipe bottom.

In order to facilitate observation of the oil level in the oil collecting tank and timely cleaning, an oil pointer is arranged on the front side wall of the oil collecting tank.

In order to facilitate preliminary filtration of oil smoke, a filter screen is arranged at the air inlet.

Compared with the prior art, the invention has the advantages that: the bottom end of the hanging frame hung with the oil collecting part is attached to the oil collecting part, so that a negative pressure area is prevented from being generated on the rear side, the problem of oil dripping after oil accumulation on the front side of the oil collecting part and the problem of wall hanging oil caused by the negative pressure area on the rear side are solved, and simultaneously, the air volume of each negative pressure area is improved, the oil smoke absorption effect of the three negative pressure areas is improved, the oil smoke escape of the left, right and front ends of the oil smoke collecting cover is reduced, and the oil smoke absorption effect of the whole machine is enhanced; the stores pylon sets up in the bottom of collection petticoat pipe, and the couple seat on the stores pylon is hung through the mode that articulates to the back by preceding to make the whole visual of installation process of collection oil portion, the installation is all very convenient with the dismantlement.

Drawings

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

FIG. 2 is a side view of the range hood according to the embodiment of the present invention in an installed state;

FIG. 3 is an enlarged view of a portion I of FIG. 2;

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

FIG. 5 is an enlarged view of portion II of FIG. 4;

FIG. 6 is an enlarged view of a portion III of FIG. 4;

fig. 7 is a schematic view of a hidden part of a smoke guide plate assembly of the range hood according to the embodiment of the invention;

fig. 8 is a schematic view of a part of a smoke guide plate of the range hood according to the embodiment of the invention;

fig. 9 is a schematic view of a rack of a range hood according to an embodiment of the present invention;

FIG. 10 is an enlarged view of a portion III of FIG. 9;

fig. 11 is a schematic view of a disassembled state of a smoke guide plate assembly of the range hood according to the embodiment of the invention;

FIG. 12 is a schematic view of a prior art extractor hood;

fig. 13 is a side view showing an installation state of a range hood according to the prior art;

FIG. 14 is an enlarged view of a portion IV of FIG. 13;

fig. 15 is a schematic view of an oil cup of a range hood in the prior art.

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 ceiling range hood, and includes a fume collecting hood 1, a fan frame 2 disposed above the fume collecting hood 1, and a fan system 3 disposed in the fan frame 2, wherein the fan system 3 is preferably a centrifugal fan.

The inner side of the smoke collecting cover 1 is provided with a smoke collecting cavity 11 which is concave upwards from the bottom surface, the joint of the top of the smoke collecting cover 1 and the fan frame 2 is provided with an air inlet 12, the air inlet 12 enables the smoke collecting cavity 11 to be communicated with the internal fluid of the fan frame 2, so that the oil smoke collected in the smoke collecting cavity 11 enters the fan frame 2 through the air inlet 12 and is discharged by the fan system 3. A filter screen 13 may be disposed at the air inlet 12 to primarily filter the oil smoke.

The smoke guide plate assembly 4 is arranged below the air inlet 12, and the smoke guide plate assembly 4 can be positioned in the smoke collection cavity 11 or partially extend to the lower part of the smoke collection cavity 11. Referring to fig. 3, 4 and 8, the smoke guide plate assembly 4 includes a smoke guide plate 41 and an oil collecting portion 42 which are integrally formed, the smoke guide plate 41 is gradually inclined downward from front to back, the oil collecting portion 42 is seamlessly disposed at the rear side of the smoke guide plate 41, the oil collecting portion 42 includes an oil collecting groove 421 formed by a top surface recessed downward, and the front side wall of the oil collecting groove 421 is formed by a rear side of the smoke guide plate 41 being inclined rearward and gradually downward. The oil collecting portion 42 is deeply stretched to form a deep groove, and the oil collecting groove 421 is formed, oil drops filtered by the range hood fall onto the smoke guide plate 41, and because the smoke guide plate 41 is obliquely installed, the oil drops flow into the oil collecting groove 421 along the surface of the smoke guide plate 41, and the oil collecting groove 421 replaces the function of an oil cup in the prior art. Meanwhile, an oil pointer 422 is arranged on the front side wall of the oil collecting tank 421 so as to observe the oil level in the oil collecting tank 421, so that the smoke guide plate assembly 4 can be detached in time, accumulated oil in the oil collecting tank 421 can be cleaned, and the smoke guide plate 41 and the oil collecting tank 421 can be cleaned.

The front side of the upper surface of the smoke guide plate 41 is provided with a latch 43, the inner side of the rear side wall of the oil collecting part 42 is provided with a hook 44, preferably, the latch 43 is provided with two latches which are respectively arranged at the left side and the right side of the smoke guide plate 41, and the hook 44 is provided with two latches which are respectively arranged at the left side and the right side of the oil collecting part 42. The latch 43 and the hook 44 can be fixed to the smoke guide plate 41 and the oil collecting portion 42 by laser welding. The hook 44 includes a hook frame 441 and a hook portion 442 provided on the hook frame 441, the hook portion 442 is rod-shaped and extends in the left-right direction, that is, the hook portion 442 of the left hook 44 extends rightward from the connection with the hook frame 441, the hook portion 442 of the right hook 44 extends leftward from the connection with the hook frame 441, and the two hook portions 442 extend toward each other.

The smoke guide plate assembly 4 further includes a latch seat 45 and a hanger 46, referring to fig. 4 to 10, the latch seat 45 is disposed at a position corresponding to the latch 43 inside the smoke collecting hood 1, and the mating manner of the latch seat 45 and the latch 43 is the prior art, for example, refer to the installation structure of the flow guide plate of the range hood disclosed in the chinese patent with the application number of 201320774440.3 of the present applicant. The hanging rack 46 is arranged below the bottom of the rear side of the fume collecting hood 1 and is fixedly connected. The hanging rack 46 is long and extends in the left-right direction, and the hanging rack 46 can be fixedly connected with the bottom of the rear side of the smoke collecting hood 1 at the top. The hanger 46 is provided with a hanger seat 47, a hanging groove 471 can be opened in the hanger seat 47, and the left end, the right end and the front end of the hanging groove 471 penetrate through the hanger seat 47.

Alternatively, other detachable connection modes, such as insertion connection, magnetic attraction, etc., may also be adopted between the smoke guide plate 41 and the smoke collecting cover 1. In addition, instead of the hook 44 being disposed on the rear sidewall, the hook seat 47 may be disposed at a corresponding position of the hanger 46, and the hook 44 may be disposed on the sidewalls on the left and right sides of the oil sump 421.

When the smoke guide plate assembly 4 is installed, the hook portion 441 of the hook 44 can be firstly hooked into the hanging groove 471 of the hook seat 47, for example, the hook portion 441 can be clipped into the hanging groove 471 from the front side to the back side, and since the position of the hanging rack 46 is lower than the bottom of the smoke collecting hood 1, in this installation step, the positions of the hook 44 and the hook seat 47 can be clearly seen for visual installation. Then, the front end of the smoke guide plate 41 is lifted upwards, the latch 43 is installed in the latch seat 45, and blind installation can be realized in the process without positioning. That is, the whole installation process only needs to put the hook 44 into the hook seat 47 of the hanger 46 and then to be directly buckled up, so as to complete the whole installation. The whole installation process is high in visualization degree, and operation can be conveniently and quickly carried out.

When the smoke guide plate assembly 4 needs to be disassembled, referring to fig. 11, the latch 43 at the front end of the smoke guide plate 41 is first pulled out downwards from the latch seat 45 and then rotated downwards. Through the size design of the hook 44, the hanging rack 46 and the hook seat 47, the smoke guide plate 41 is ensured to rotate downwards by a certain angle, for example, 18 degrees in the embodiment, the rear end of the oil collecting part 42 touches the wall 100, so that the smoke guide plate cannot rotate downwards any more, and a positioning effect is achieved. In this way, the accumulated oil in the oil collecting groove 421 cannot be directly poured out due to the overlarge inclination angle under the condition that the smoke guide plate 41 and the oil collecting part 42 are inclined by a small angle (maximum 18 degrees), and the visualization of the whole dismounting process is also ensured by the certain inclination angle.

The integrated structure of the smoke guide plate 41 and the oil collecting part 42 cancels the folding edges at the left end and the right end of the original independent oil cup (the folding edges serve as a hook), and avoids the risk of hurting hands caused by touching the folding edges in the cleaning process. Meanwhile, the smoke guide plate 41 and the oil collecting part 42 are integrally formed in a stretching mode, and the oil collecting groove 421 is large in space and convenient to clean.

The bottom end of the hanging frame 46 is attached to the rear side of the top of the oil collecting part 42, and the term "attachment" means that the gap between the hanging frame and the oil collecting part is smaller than 1mm, negative pressure is easily generated at the position due to too large gap, and a rear side negative pressure area can reappear, so that 4 existing areas of the negative pressure area generated by the smoke guide plate 41 and the oil collecting part 42 are optimized into 3 areas (left, right and front), the problem of oil dripping after oil accumulation on the oil collecting part 42 or the front inclined plane of the oil cup caused by the original rear side negative pressure area and the problem of wall hanging oil are solved, meanwhile, the negative pressure area is optimized into 3 areas from the original 4 areas, so that the negative pressure of each area is increased compared with the original area, the oil smoke absorption effect of the 3 areas is increased, the oil smoke escape of the left, right and front ends of the oil smoke collecting cover 1 is reduced.

The top end of the hanger 46 is attached to the rear side of the bottom of the smoke collecting hood 1, so that the generation of a gap is avoided, and the lampblack re-enters the air inlet 12 from the space between the hanger 46 and the smoke collecting hood 1, in addition, the hanger 46 can be accurately positioned when being installed on the smoke collecting hood 1, and the forward or backward movement of the hanger 46 is avoided.

Referring to fig. 3, 6 and 7, the front side surface of the hanging rack 46 is provided with the oil guiding strips 48, the oil guiding strips 48 also extend in the left-right direction, the oil guiding strips 48 are also gradually inclined downwards from the front side of the hanging rack 46 to the front, and the front ends of the oil guiding strips 48 are positioned above the oil collecting grooves 421. Therefore, the oil at the rear end of the smoke collecting hood 1 flows onto the hanging frame 46, flows onto the oil guide strips 48 along the wall of the hanging frame 46, and finally is guided into the oil collecting tank 421 through the oil guide strips 48, so that the problems of oil dripping and oil leakage are avoided, and the flow path of the oil is shown by arrows in fig. 6. The position and the length that lead the setting of oil strip 48 all cooperate with the easy dismounting of leading cigarette board 41 and collection oil portion 42, have still guaranteed under the circumstances of realizing leading oil that lead cigarette board 41 and collection oil portion 42 easy dismounting.

Claims

1. The utility model provides a range hood, for the top suction formula range hood, includes collection petticoat pipe (1) and leads cigarette board subassembly (4), air intake (12) have been seted up on collection petticoat pipe (1), lead cigarette board subassembly (4) including setting up at guide cigarette board (41) of air intake (12) below and seamless setting oil collection portion (42) leading cigarette board (41) rear side, oil collection portion (42) form oil catch bowl (421), its characterized in that by the top surface undercut: the bottom of collection petticoat pipe (1) is provided with stores pylon (46) that are used for articulating collection oil portion (42), the bottom laminating of stores pylon (46) is in the top rear side of collection oil portion (42).

2. The range hood of claim 1, wherein: the smoke guide plate (41) and the oil collecting part (42) are integrally formed, and the oil collecting groove (421) is formed in a stretching mode.

3. The range hood of claim 2, wherein: the front side wall of the oil collecting groove (421) is formed by the rear side of the smoke guide plate (41) inclining backwards and downwards gradually, and the smoke guide plate (41) inclines downwards gradually from the front to the rear.

4. The range hood according to any one of claims 1 to 3, wherein: be provided with couple (44) on the lateral wall of collection oil portion (42), be provided with on stores pylon (46) and supply couple (44) by preceding couple seat (47) of hanging the access after, smoke deflector (41) front side and collection petticoat pipe (1) can be dismantled and be connected.

5. The range hood of claim 4, wherein: the hook (44) comprises a hook frame (441) and a hook portion (442) arranged on the hook frame (441), the hook portion (442) is rod-shaped and extends in the left-right direction, a hanging groove (471) is formed in the hook seat (47), and the left end, the right end and the front end of the hanging groove (471) penetrate through the hook seat (47).

6. The range hood of claim 4, wherein: the upper surface front side of smoke deflector (41) is provided with and bumps knot (43), collection petticoat pipe (1) inboard is provided with and bumps knot seat (45), bump knot (43) and the cooperation of bumping knot seat (45) make smoke deflector (41) and collection petticoat pipe (1) can dismantle the connection.

7. The range hood according to any one of claims 1 to 3, wherein: the oil guide strip (48) is arranged on the front side face of the hanging rack (46), the oil guide strip (48) extends left and right and is inclined downwards forwards from the front side of the hanging rack (46) gradually, and the front end of the oil guide strip (48) is located above the oil collecting groove (421).

8. The range hood according to any one of claims 1 to 3, wherein: the top end of the hanging rack (46) is attached to the rear side of the bottom of the smoke collecting cover (1).

9. The range hood according to any one of claims 1 to 3, wherein: and an oil pointer (422) is arranged on the front side wall of the oil collecting tank (421).

10. The range hood according to any one of claims 1 to 3, wherein: and a filter screen (13) is arranged at the air inlet (12).