CN111609437A

CN111609437A - Ceiling type range hood

Info

Publication number: CN111609437A
Application number: CN201910133065.6A
Authority: CN
Inventors: 李志峰
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-02-22
Filing date: 2019-02-22
Publication date: 2020-09-01
Anticipated expiration: 2039-02-22
Also published as: CN111609437B

Abstract

The invention discloses a top-suction type range hood, which comprises a fume collecting hood and a box body, and is characterized in that: the collection petticoat pipe rotates with the box to be connected and in the collection petticoat pipe at least part upwards extends into the box, the axis of rotation of collection petticoat pipe extends in the left and right directions, the air intake that communicates in with the box is seted up to the bottom of collection petticoat pipe. By arranging the smoke collecting hood capable of turning up and down, the oil smoke suction inlet on the smoke collecting hood can descend in work, so that a negative pressure area is closer to a cooker; by turning over the smoke collecting hood, the smoke collecting cavity and the air inlet of the fan system form an optimized and seamless smoke inlet channel, so that energy loss is avoided, air quantity is increased, pneumatic noise is reduced, and air suction and attractive appearance are reduced.

Description

Ceiling type range hood

Technical Field

The invention relates to an oil fume purification device, in particular to a top suction type range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood of the top suction type utilizes the principle of hot gas rising to suck and discharge the naturally rising oil smoke generated during cooking, and has more and more extensive application due to the advantages of neatness, lightness, small occupied space and the like. However, due to the limitation of the installation height, the power source of the range hood is far away from the cooking bench, and the anti-interference capability and the smoke gathering capability of the range hood for the instantaneous large amount of oil smoke are poor, so that the problems of flow reduction, efficiency reduction of the range hood and the like are caused.

The existing top-suction range hood mainly adopts a net suction mode, a smoke guide plate circular suction mode and the like. The extractor hood disclosed in the chinese patent with application number 201820963736.2 comprises a housing and a filtering device, wherein the filtering device is mounted on the housing and comprises a support frame, a filter screen and a fastening frame, the filter screen is clamped between the support frame and the fastening frame, the filter screen is conical, and the support frame and the fastening frame are correspondingly conical; if chinese patent application No. 201820467703.9 discloses a lift lampblack absorber again, including lampblack absorber body and smoke deflector, the lampblack absorber body includes fan and control module, and the lampblack absorber still includes elevating system, and elevating system's lift distance is adjusted according to the work gear of fan to control module, and elevating system includes elevator motor, guide rail and sliding assembly, and sliding assembly cooperates with the guide rail and can move along the guide rail under elevator motor's drive, and sliding assembly's one end and this body coupling of lampblack absorber, the other end and smoke deflector are connected.

The negative pressure area of the net suction technology is only concentrated in the central area, the smoke guide plate circular suction technology can reduce the suction inlet of the range hood and effectively distribute the negative pressure area around the smoke collection cavity, but the smoke guide plate is far away from the smoke collection cavity, so that the path of oil smoke entering the smoke collection cavity is prolonged, the on-way loss is caused, the air volume is reduced, and the external interference is easy to cause. In addition, the traditional smoke inlet channel is not further optimized, and the oil smoke can generate vortex above the inner cavity of the range hood after entering, so that the flow is reduced, and the efficiency of the fan is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a ceiling type range hood aiming at the problems in the prior art, so that a negative pressure area is reduced, flow loss is reduced, and the oil smoke suction efficiency is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a top suction type range hood, includes collection petticoat pipe and box, its characterized in that: the collection petticoat pipe rotates with the box to be connected and in the collection petticoat pipe at least part upwards extends into the box, the axis of rotation of collection petticoat pipe extends in the left and right directions, the air intake that communicates in with the box is seted up to the bottom of collection petticoat pipe.

Preferably, the collection petticoat pipe includes whole transversely extending's first petticoat pipe and whole longitudinal extension's second petticoat pipe, first petticoat pipe at least part is located the box below, the second petticoat pipe at least part extends into in the box, smooth transition between first petticoat pipe and the second petticoat pipe, the air intake is seted up the bottom of first petticoat pipe, first petticoat pipe and second petticoat pipe form the collection cigarette chamber with air intake and box intercommunication.

For optimizing inlet air channel, avoid energy loss, improve the amount of wind, reduce pneumatic noise, the vertical fan that has arranged in the box, the fan includes the fan air intake towards the rear side, the air outlet that can dock with the fan air intake is opened to the second petticoat pipe front side, air outlet and collection smoke chamber intercommunication, the shape, the size of fan air intake and air outlet all match.

Preferably, the second petticoat pipe includes petticoat pipe preceding curb plate and petticoat pipe posterior lateral plate, the petticoat pipe preceding curb plate is located fan rear side and adjacent, the air outlet is seted up on the petticoat pipe preceding curb plate.

Preferably, first petticoat pipe includes petticoat pipe bottom plate and petticoat pipe roof, seal between the front end of petticoat pipe bottom plate and petticoat pipe roof, the bottom of petticoat pipe front side board is connected and smooth transition with the rear end of petticoat pipe roof, the bottom of petticoat pipe rear side board is connected and smooth transition with the rear end of petticoat pipe bottom plate, the air intake is seted up on the petticoat pipe bottom plate.

After the start work that targets in place for avoiding the collection petticoat pipe to rotate, have the clearance between box and the collection petticoat pipe and cause oil smoke gas stream to get into in the box from the collection petticoat pipe is outer, the petticoat pipe roof is by front and back to tilt up gradually, the box includes the box bottom plate, set up the opening that supplies the collection petticoat pipe to pass on the box bottom plate, the front bottom plate that the box bottom plate is located the opening front side also has near the open-ended, by the part of preceding gradual tilt up backward.

For making the collection petticoat pipe have great turned angle, the collection petticoat pipe includes the pivot that sets up in the bottom rear side, both ends rotate with the box respectively about the pivot and are connected, the front side at collection petticoat pipe is seted up to the air intake.

In order to automatically control the rotation of the smoke collecting hood, the smoke collecting hood further comprises a driving device for driving the first smoke collecting hood and the second smoke collecting hood to rotate.

Preferably, the driving device is an electric push rod which is arranged in the box body and is positioned outside the first smoke hood and the second smoke hood.

In order to guide the oil smoke to enter the smoke collecting cavity quickly, the air inlet is provided with a smoke guide plate.

Compared with the prior art, the invention has the advantages that: by arranging the smoke collecting hood capable of turning up and down, the oil smoke suction inlet on the smoke collecting hood can descend in work, so that a negative pressure area is closer to a cooker; by turning over the smoke collecting hood, the smoke collecting cavity and the air inlet of the fan system form an optimized and seamless smoke inlet channel, so that energy loss is avoided, air quantity is increased, pneumatic noise is reduced, and air suction and attractive appearance are reduced.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention in a closed state;

FIG. 2 is a cross-sectional view of the range hood of FIG. 1;

fig. 3 is an exploded schematic view of a range hood according to an embodiment of the present invention;

FIG. 4 is a schematic view of the operating status of the range hood according to the embodiment of the present invention;

fig. 5 is a sectional view of the range hood of fig. 4.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Referring to fig. 1 to 3, a ceiling type range hood includes a fume collecting hood 1, a box body 2 and a fan 3 disposed in the box body 2. For convenience of description, the following terms "front", "rear", "left", "right", "up" and "down" refer to the directions of the extractor hood relative to the user when in use.

The housing 2 comprises side walls 21, a housing bottom 22 and a top 23, which enclose a hollow housing structure. The fan 3 is disposed inside the case 2. In this embodiment, the fan 3 is a vertically arranged centrifugal fan, and includes a volute 31 and an impeller 32 disposed in the volute 31, the volute 31 is provided with a fan air inlet 311 and a fan air outlet 312, the fan air inlet 311 faces the rear side of the inside of the box 2, and the fan air outlet 312 is located at the top plate 23 of the box 2 to communicate with the outside of the box 2 to discharge oil smoke.

An opening 221 is opened on the case bottom plate 22 of the case 2, and the opening 221 extends in the left-right direction so that the part of the smoke collecting hood 1 passes through the opening 221 and enters the case 2. Thus, the case base 22 includes a front base 222 located on the front side of the opening 221 and a rear base 223 located on the rear side of the opening 221.

The smoke collecting hood 1 includes an integral transversely extending first hood 11 and an integral longitudinally extending second hood 12, and the first hood 11 and the second hood 12 may be integrally formed. The first smoke cage 11 comprises a smoke cage bottom plate 111 and a smoke cage top plate 112 positioned above the smoke cage bottom plate 111, the smoke cage bottom plate 111 and the front end of the smoke cage top plate 112 are closed, as in the embodiment, a front baffle 113 is further arranged, and the top end and the bottom end of the front baffle 113 are respectively connected with the smoke cage top plate 112 and the smoke cage bottom plate 111. An air inlet 114 is formed in the front side of the smoke hood bottom plate 111, the air inlet 114 extends in the left-right direction, and a smoke guide plate 4 is arranged at the air inlet 114 and plays the same role as the existing smoke guide plate. The hood top plate 112 is gradually inclined upward from front to back, and the front bottom plate 222 of the box bottom plate 22 also has a portion adjacent to the opening 221, which is gradually inclined upward from front to back, whereby the front-to-back width of the opening 221 of the box bottom plate 22 can be made as small as possible so as to keep close contact with the hood 1 during rotation of the hood 1 and prevent the smoke from entering the box 2 from the gap between the hood 1 and the front bottom plate 222. Preferably, the angled portion of the front floor 222 conforms to the hood top panel 112. The hood bottom 111 may also be inclined gradually upward from the front to the rear.

The first hood 11 is located at least partially below the cabinet 2 and the second hood 12 is located at least partially within the cabinet 2. The second smoke hood 12 comprises a smoke hood front side plate 121 and a smoke hood rear side plate 122 located on the rear side of the smoke hood front side plate 121, wherein the bottom end of the smoke hood front side plate 121 is connected with and in smooth transition with the rear end of the smoke hood top plate 112, the bottom end of the smoke hood rear side plate 122 is connected with and in smooth transition with the rear end of the smoke hood bottom plate 111, and the smoke hood front side plate 121 is gradually inclined backwards from bottom to top and is connected with the smoke hood front side plate 121 on the top end. The angle between the hood front panel 121 and the hood top panel 112 is preferably 103 °. The first hood 11 and the second hood 12 form a smooth smoke collecting chamber 13. The hood front side plate 121 is located on the rear side of the fan 3 and adjacent to the fan 3, and the hood rear side plate 122 is located farther from the fan 3 than the hood front side plate 121.

A rotating shaft 14 is arranged at the connection position of the hood bottom plate 111 of the first hood 11 and the hood rear side plate 122 of the second hood 12, and the rotating shaft 14 is positioned at the outer sides of the first hood 11 and the second hood 12. Thus, the distance between the rotary shaft 14 and the intake vent 114 is large enough so that the hood 1 can be rotated by a maximum angle to lower the intake vent 114 as much as possible. The left and right sides of the rear bottom plate 223 of the box bottom plate 22 are respectively provided with a bearing 224, and the left and right ends of the rotating shaft 14 are respectively rotatably connected with the bearings 224, so that the rotating shaft 14 is rotatably connected with the box bottom plate 22 of the box 2, that is, the smoke collecting hood 1 is rotatably connected with the box 2, and the rotating shaft of the smoke collecting hood 1 is positioned at the bottom of the rear side of the smoke collecting hood 1. The rotating shaft 14 is closely attached to the front end of the rear base plate 223 to prevent oil smoke from entering the cabinet 2 through the gap between the rotating shaft 14 and the rear base plate 223.

The fume collecting hood 1 further includes a driving device 15 disposed on the rear side wall 21 of the box 2 and located above the rotating shaft 14, and the driving device can drive the first fume hood 11 and the second fume hood 12 of the fume collecting hood 1 to turn over. In this embodiment, the driving device 15 is an electric push rod, the electric push rod extends obliquely, an output end of the electric push rod is connected with the hood rear side plate 122 of the second hood 12 of the fume collecting hood 1, and the connection position is located above the rotating shaft 14. The electric push rod is arranged outside the smoke collecting cover 1, so that the service life cannot be shortened due to frequent contact of the driving device 15 in the smoke collecting cavity 13 and the oil smoke, which flows out of the smoke collecting cover 1 due to the fact that the driving device 15 penetrates through the smoke collecting cover 1, in the smoke collecting cavity 13.

An air outlet 123 is formed in the hood front side plate 121 of the second hood 12, and the shape, size and position of the air outlet 123 are matched with the fan air inlet 311 of the fan 3, so that the second hood is in butt joint with the range hood during operation. The smoke collection chamber 13 communicates with the air inlet 114 and the air outlet 123.

When the range hood is closed, the second hood 12 is in a substantially vertical state, and at this time, the air outlet 123 is far away from the fan inlet 311 of the fan 3. When the range hood works, referring to fig. 4 and 5, the output end of the electric push rod extends out to push the second smoke cage 12 to rotate forwards, and meanwhile, the first smoke cage 11 is driven to rotate downwards until the rear end part of the front bottom plate 222 of the box bottom plate 22 is abutted with the front side plate 121 of the smoke cage of the second smoke cage 12, so that the gap between the smoke collecting hood 1 and the front end part of the opening 221 on the box bottom plate 22 is closed. At this moment, the hood front side plate 121 of the second hood 12 rotates to a vertical state, the air outlet 123 on the second hood 12 is butted and completely attached with the fan air inlet 311 of the fan 3, the smoke guiding capacity of the smoke collecting cavity 13 is realized, the oil smoke is smoothly sucked, conducted and discharged to the fan 3, and the air inlet 114 on the first hood 11 is turned downwards, so that the suction inlet of the range hood is integrally reduced, the negative pressure zone is closer to a cooker, the smoke control capacity is improved, and the oil smoke suction effect is improved. Preferably, the rotation angle of the smoke collecting hood 1 may be 20 °. After the use, the electric push rod moves reversely to drive the smoke collecting hood 1 to rotate reversely.

Claims

1. The utility model provides a top suction type range hood, includes collection petticoat pipe (1) and box (2), its characterized in that: collection petticoat pipe (1) rotate with box (2) be connected and collection petticoat pipe (1) at least part upwards extends into in box (2), the axis of rotation of collection petticoat pipe (1) extends in the left and right directions, air intake (113) with intercommunication in box (2) are seted up to the bottom of collection petticoat pipe (1).

2. The ceiling-mounted range hood according to claim 1, wherein: collection petticoat pipe (1) is including whole transversely extending's first petticoat pipe (11) and whole longitudinal extension's second petticoat pipe (12), first petticoat pipe (11) at least part is located box (2) below, second petticoat pipe (12) at least part extends into in box (2), smooth transition between first petticoat pipe (11) and second petticoat pipe (12), air intake (113) are seted up the bottom of first petticoat pipe (11), form in first petticoat pipe (11) and second petticoat pipe (12) with air intake (113) and box (2) interior collection cigarette chamber (13) of intercommunication.

3. The ceiling-mounted range hood according to claim 2, wherein: vertical fan (3) of having arranged in box (2), fan (3) are including fan air intake (311) towards the rear side, second petticoat pipe (12) front side is opened and is equipped with air outlet (123) that can dock with fan air intake (311), air outlet (123) and collection smoke chamber (13) intercommunication, the shape, the size of fan air intake (311) and air outlet (123) all match.

4. The ceiling-mounted range hood according to claim 3, wherein: the second petticoat pipe (11) are including petticoat pipe preceding curb plate (121) and petticoat pipe posterior lateral plate (122), petticoat pipe preceding curb plate (121) are located fan (3) rear side and adjacent, air outlet (123) are seted up on petticoat pipe preceding curb plate (121).

5. The ceiling-mounted range hood according to claim 4, wherein: first petticoat pipe (11) are including petticoat pipe bottom plate (111) and petticoat pipe roof (112), seal between the front end of petticoat pipe bottom plate (111) and petticoat pipe roof (112), the bottom of petticoat pipe front side board (121) is connected and smooth transition with the rear end of petticoat pipe roof (112), the bottom of petticoat pipe rear side board (122) is connected and smooth transition with the rear end of petticoat pipe bottom plate (111), air intake (114) are seted up on petticoat pipe bottom plate (111).

6. The ceiling-mounted range hood according to claim 5, wherein: the petticoat pipe roof (112) is by preceding backward tilt up gradually, box (2) are including box bottom plate (22), offer opening (221) that supply collection petticoat pipe (1) to pass on box bottom plate (22), box bottom plate (222) that box bottom plate (22) are located opening (221) front side also have be close to opening (221), by the portion of preceding backward tilt up gradually.

7. The ceiling-mounted range hood according to any one of claims 2 to 6, wherein: the collection petticoat pipe (1) includes pivot (14) that set up in the bottom rear side, both ends rotate with box (2) respectively about pivot (14) and are connected, the front side at collection petticoat pipe (1) is seted up in air intake (113).

8. The ceiling-mounted range hood according to any one of claims 2 to 6, wherein: the fume collecting hood (1) further comprises a driving device (15) for driving the first fume hood (11) and the second fume hood (12) to rotate.

9. The ceiling-mounted range hood according to claim 8, wherein: the driving device (15) is an electric push rod which is arranged in the box body (2) and positioned outside the first smoke hood (11) and the second smoke hood (12).

10. The ceiling-mounted range hood according to any one of claims 1 to 6, wherein: and a smoke guide plate (4) is arranged at the air inlet (114).