CN110594812B

CN110594812B - Fume exhaust fan

Info

Publication number: CN110594812B
Application number: CN201910837116.3A
Authority: CN
Inventors: 田涛
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2021-01-19
Anticipated expiration: 2039-09-05
Also published as: CN110594812A

Abstract

The invention discloses a range hood, which comprises a shell, a fan arranged in the shell and an air outlet cover arranged above the shell, wherein the shell comprises an air outlet plate, the air outlet plate comprises an annular mounting part, the fan comprises a volute, the air outlet plate and the air outlet cover are sealed through an integrated sealing gasket, the sealing gasket comprises a first gasket body tightly attached to the volute and a second gasket body tightly attached to the air outlet cover, the inner sides of the first gasket body and the second gasket body are connected with each other to form a whole, a sealing groove is formed between one side of the first gasket body, which is far away from the volute, and one side of the second gasket body, which is far away from the air outlet cover, and the mounting part of the air outlet plate is clamped in the sealing groove from. Compared with the prior art, the invention has the advantages that: through the integrated sealing gasket, two faces of the air outlet plate and the sealing interface of the sealing gasket are eliminated, the sealing effect is enhanced, the uniform sealing gasket section is arranged at the air outlet plate section of the air channel, the installation dislocation is reduced, and the improvement of the performance and the noise of the fan is promoted.

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 indispensable kitchen appliances in modern families, utilizes the fluid dynamics principle to work, inhales and exhausts oil smoke through a centrifugal fan arranged in the range hood, and uses a filter screen to filter partial grease particles. 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 collected by the volute and guided to be discharged out of a room.

Referring to fig. 10 and 11, the connection between the outlet hood 3 'and the outlet plate 11' of the housing of the range hood is mainly fixed by screws, wherein a layer of lower sealing gasket 41 'made of flexible materials such as rubber layer or foam is arranged between the volute 21' of the fan and the outlet plate 11 'of the housing for sealing, and another layer of upper sealing gasket 42' made of flexible materials such as rubber or foam is arranged between the outlet hood 3 'and the outlet plate 11' of the housing for sealing. Or the volute 21 'and the air outlet cover 3' can be directly connected on the shell without flexible material sealing.

The installation mode of the fan and the range hood shell has the following defects: 1. 4 sealing interfaces exist between the volute air outlet and the air outlet housing main body, the interfaces are easy to cause poor sealing, so that the phenomenon of smoke leakage or oil leakage is caused, wherein the oil fume overflows due to the two sealing interfaces of the air outlet housing and the air outlet plate of the range hood; 2. the installation is inconvenient: at present, sealing gaskets at the positions of a volute and an air outlet plate of a range hood are mostly installed and fixed by manufacturers, and the sealing gaskets at the positions of the air outlet cover and the air outlet plate of the range hood are installed and fixed when the range hood is installed, so that the installation and fixing procedures of the sealing gaskets are complex; 3. the air duct dislocation easily appears: present spiral case, sealed pad, play fan housing all lean on the screw fastening on the air outlet board of lampblack absorber, do not have accurate positioning basically when fixed, simultaneously because flexible sealed pad material is softer, take place the deformation displacement more easily to in resulting in the range hood wind channel, the dislocation appears arranging in several spare parts, whole wind channel wall is not lubricated, and then influences whole range hood's performance and noise.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the range hood aiming at the problems in the prior art, so that the sealing performance and the air duct quality are improved, and the performance of the whole range hood is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes casing, the fan of setting in the casing and sets up the air-out cover in the casing top, the casing includes air outlet plate, air outlet plate includes annular installation department, the fan includes spiral case, its characterized in that: volute and air outlet plate the air outlet plate seals through the sealed pad of integration between the fan housing, sealed pad includes and pastes tight sealed first pad body, pastes tight sealed second pad body with the fan housing with the volute, first pad body and second pad body are close to the inboard interconnect of oil smoke circulation position and form an organic whole, one side that the volute was kept away from to first pad body, second pad body form the seal groove between one side of keeping away from the fan housing, the installation department of air outlet plate is gone into in the seal groove from the outside card of seal groove.

Preferably, for forming smooth wind channel, be formed with the air outlet on the spiral case, go out the fan housing including the cover body with form the oral area that is close to air outlet board one side at the cover body, first pad body is cyclic annular, with the air outlet adaptation of spiral case, the second pad body also is cyclic annular, with the oral area adaptation.

In order to avoid the situation that the deformation of the flexible material is insufficient due to surface contact and the sealing effect cannot be achieved, the mouth part of the air outlet cover comprises a first side wall and a second side wall, the first side wall and the second side wall extend from the end part, close to the air outlet plate, of the cover body towards the direction of the air outlet plate, the first side wall and the second side wall are annular, the second side wall is arranged on the periphery of the first side wall at intervals, the first side wall and the second side wall are closed between the sides far away from the air outlet plate, and a groove facing the opening of the air outlet plate is formed between the first side wall and the second side wall; the sealing pad is still including setting up the boss that is close to air-out cover one side at the second pad body, the boss also is cyclic annular, thereby the shape and the recess adaptation of boss, the recess can be gone into to the card, the second pad body is located the corresponding tip butt that the part of boss inside and outside both sides is close to the air outlet board with first lateral wall, second lateral wall respectively.

For the leakproofness of reinforcing with the installation of air-out cover, the recess is kept away from one side of wind outlet plate and is formed with the ribbing towards the extension of wind outlet plate, the ribbing wholly is located inside the recess and compresses tightly with the boss.

Preferably, for guaranteeing better sealed effect, sealed pad adopts rubber to make, the height of first lateral wall and second lateral wall equals, the difference in height of beading and first lateral wall is h, and the value range of h is 1.0 ~ 3.0 mm.

Preferably, for the location of when fan, air-out cover, sealed pad installation for being convenient for, the installation department is sunken towards the spiral case, the installation department inboard is formed with the export that corresponds with the air outlet of spiral case.

Preferably, the location when being convenient for sealed the installation of filling up and the fastening after the installation, sealed the bight that fills up and be close to air outlet board one side, be provided with the reference column that extends to air outlet board direction, the locating hole has been seted up to the installation department relevant position of air outlet board, the reference column can be gone into in the locating hole and realize the location of sealed relative air outlet board of filling up.

Compared with the prior art, the invention has the advantages that: by arranging the integrated sealing gasket, two surfaces of the air outlet plate and the sealing interface of the sealing gasket are eliminated, the sealing effect is enhanced, the production and assembly can be in place at one time, and the secondary installation is eliminated; the section of the air outlet plate of the air duct is a uniform sealing gasket section, so that the mounting dislocation is reduced, the air duct is improved, and the performance and the noise of the fan are improved; the sealing of the sealing gasket and the air outlet cover is realized through the three-way-shaped sealing structure, the condition that the deformation of a flexible material is insufficient due to surface contact and the sealing effect cannot be achieved is avoided, the better sealing effect can be ensured, the side walls on the two sides can play a role in guiding the installation of the sealing gasket when the air outlet cover is installed, the air outlet cover is easier to install in place in one step, the installation precision of the air outlet cover is increased, the cross section dislocation of the inner side of the air duct is avoided, and the air duct performance is improved; the sealing gasket can be fixed after being installed by adopting the inner contour positioning of the air outlet plate and the clamping of the sealing gasket and the outer positioning formed by matching the positioning column and the positioning hole on the periphery.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention (hiding a panel commonly used in range hoods);

FIG. 2 is a cross-sectional view of a range hood in accordance with an embodiment of the present invention;

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

fig. 4 is a schematic view of an air outlet cover of the range hood according to the embodiment of the present invention;

fig. 5 is a schematic view (from top to bottom) of a gasket of the range hood according to the embodiment of the present invention;

fig. 6 is a schematic view (from bottom to top) of a gasket of the range hood according to the embodiment of the present invention;

FIG. 7 is a cross-sectional view of a gasket of the range hood according to the embodiment of the present invention;

FIG. 8 is an enlarged view of portion II of FIG. 7;

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

FIG. 10 is a sectional view of a volute, an air outlet housing and an air outlet plate of a range hood of the prior art;

fig. 11 is an enlarged view of a part iii of fig. 10.

Detailed Description

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

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 invention and to simplify the description, and 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 are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 and 2, a range hood, in the embodiment, taking a side-draft range hood as an example, includes a housing 1, a fan 2 disposed in the housing 1, and an air outlet hood 3 disposed above the housing 1.

The fan 2 includes a scroll casing 21 and an impeller 22 disposed in the scroll casing 21, an air inlet 211 and an air outlet 212 are formed on the scroll casing 21, wherein the air inlet 211 faces to the front side and is used for sucking the oil smoke rising during cooking, and the air outlet 212 faces upward and is used for discharging the filtered oil smoke.

The casing 1 comprises an outlet plate 11 located on the whole of the casing 1 near the top, the outlet plate 11 being a flat plate extending in a transverse direction, preferably in a horizontal plane. Referring to fig. 9, the outlet plate 11 is formed with an annular mounting portion 111 recessed toward the scroll casing 21, and an outlet 112 corresponding to the outlet 212 of the scroll casing 21 is formed inside the mounting portion 111.

The sealing gaskets 4 are arranged among the air outlet plate 11, the volute 21 and the air outlet cover 3, and one sealing gasket 4 is used for replacing two sealing gaskets (the sealing gasket between the volute and the air outlet plate and the sealing gasket between the air outlet cover and the air outlet plate) in the prior art, so that the sealing requirements of the two parts are met, the production and the assembly can be in place at one time, and the secondary installation is eliminated. The air outlet 211 of the volute casing 21, the middle of the sealing gasket 4, the opening 112 in the middle of the mounting part 111 of the air outlet plate 11 and the inside of the air outlet cover 3 jointly form an air duct.

Referring to fig. 3 to 9, the sealing gasket 4 is preferably made of rubber, and includes a first pad 41, a second pad 42 and a boss 43 which are integrally formed, and the outlet hood 3 includes a hood body 31 and a mouth 32 formed at one end of the hood body 31 near the outlet plate 11. Wherein, the first cushion body 41 is arranged near the volute casing 21, and the second cushion body 42 is arranged near the wind outlet casing 3. The first pad 41 is annular, the shape of which is matched with the air outlet 211 of the volute 21 so as to be installed with the volute 21, and the inner side of the first pad 41 is used for oil smoke to pass through; the second pad 42 is also annular, and the shape of the second pad is matched with the mouth 32 of the air-out cover 3 so as to be installed with the air-out cover 3, and the inner side of the second pad 42 is used for oil smoke to pass through.

The inner side of the first pad 41 and the inner side of the second pad 42 (the side close to the oil smoke circulation position) are integrally connected to each other. A sealing groove 44 is formed between one side of the first cushion body 41 far away from the volute casing 21 and one side of the second cushion body 42 far away from the air outlet housing 3, so that the formed sealing groove 44 is closed at the inner side and is opened at the outer side. The mounting portion 111 of the outlet plate 11 is inserted into the sealing groove 44 from the outside of the sealing groove 44 to form the inner contour positioning of the gasket 4, thereby completing the primary positioning of the gasket 4. Moreover, the connecting structure changes the original three layers (the volute and the air outlet plate sealing gasket, the air outlet cover and the air outlet plate sealing gasket and the air outlet plate) into the uniform sealing gasket 4 section at the section of the air outlet plate 11 of the air duct, reduces installation dislocation, improves the air duct and further promotes the improvement of the performance and the noise of the fan.

The mouth portion 32 of the wind outlet cover 3 includes a first side wall 321 and a second side wall 322 extending from the end portion of the cover body 31 close to the wind outlet plate 11 toward the wind outlet plate 11, the first side wall 321 and the second side wall 322 are annular, the second side wall 322 is disposed at the periphery of the first side wall 321 at intervals, and the first side wall 321 and the second side wall 322 are closed between the sides far away from the wind outlet plate 11. The first and

second side walls

321 and 322 form therebetween a groove 323 opening toward the outlet plate 11. The boss 43 of the sealing gasket 4 is also annular and is arranged on one side of the second cushion body 42 close to the air outlet cover 3, the shape of the boss 43 is matched with the groove 323, and the boss 43 can be clamped into the groove 323. The side of the groove 323 facing away from the outlet plate 11 is extended toward the outlet plate 11 to form a rib 324 for pressing against the boss 43. The rib 324 is integrally located inside the groove 323, that is, does not protrude from the two side walls, the height difference between the rib 324 and the first side wall 321 (or the second side wall 322, the height of the two side walls is the same) is h, the range of the h is preferably 1.0-3.0 mm, and here, the height refers to the dimension of the range hood in the vertical direction when the range hood is in a use state. The portions of the second pad 42 located on the inner and outer sides of the boss 43 abut against the corresponding ends of the first and

second side walls

321 and 322 close to the outlet plate 11.

The sealing gasket 4 is provided with positioning columns 45 extending towards the direction of the air outlet plate 11 at the corners, preferably four corners, on one side of the air outlet plate 11, the positioning columns 45 correspond to the outside of the air outlet 212 of the volute 21, positioning holes 113 are formed in the corresponding positions of the mounting portion 111 of the air outlet plate 11, and the positioning columns 45 can be clamped into the positioning holes 113, so that the outer positioning of the sealing gasket is realized. The inner contour positioning and the outer positioning enable the gasket 4 to be fixed after installation without the aid of other materials (such as double-sided adhesive tape, etc.).

Three sealing structures are formed by the matching of the boss 43 and the pressing rib 324 and the matching of the second cushion body 42 and the two side wall end parts, and the sealing effect is achieved by the compression deformation of the sealing gasket 4 at the sealing position. This structure has two advantages, one of which is the sealing property: the deformation of the boss 43 is greater than that of the second cushion body 42, so that a better sealing effect can be ensured, and the thickness of the flexible material at the boss 43 is greater than that of the second cushion body 42, so that the stress condition of three seals is basically consistent although the deformation at three positions is inconsistent, and the stress of the surface of the whole air outlet cover 3 matched with the sealing gasket 4 is uniform; the second is installation: when the air outlet cover 3 is installed, the groove 323 of the air outlet cover 3 is matched with the boss 43, and the two side walls can guide the boss 43, so that the air outlet cover can be installed in place more easily.

The integrated sealing gasket replaces the existing two sealing gasket structures, eliminates two surfaces of the air outlet plate and the sealing interface of the sealing gasket, achieves the effect of sealing enhancement, enables production and assembly to be in place at one time, and eliminates secondary installation; the section of the air outlet plate of the air duct is a uniform sealing gasket section, so that the mounting dislocation is reduced, the air duct is improved, and the performance and the noise of the fan are improved; the sealing of the sealing gasket and the air outlet cover is realized through the three-way-shaped sealing structure, the condition that the deformation of a flexible material is insufficient due to surface contact and the sealing effect cannot be achieved is avoided, the better sealing effect can be ensured, the side walls on the two sides can play a role in guiding the installation of the sealing gasket when the air outlet cover is installed, the air outlet cover is easier to install in place in one step, the installation precision of the air outlet cover is increased, the cross section dislocation of the inner side of the air duct is avoided, and the air duct performance is improved; the concave-convex matching structure of the air outlet cover and the sealing gasket is used for positioning the inner contour of the clamping of the air outlet plate and the sealing gasket and positioning the outer periphery of the air outlet cover and the sealing gasket by matching the positioning column and the positioning hole, so that the sealing gasket can be fixed after being installed.

Claims

1. The utility model provides a range hood, includes casing (1), sets up fan (2) in casing (1) and sets up air-out cover (3) in casing (1) top, casing (1) includes air outlet plate (11), air outlet plate (11) are including annular installation department (111), fan (2) include spiral case (21), its characterized in that: the oil smoke exhaust ventilator is characterized in that the volute (21) and the air outlet plate (11), the air outlet plate (11) and the air outlet cover (3) are sealed through an integrated sealing gasket (4), the sealing gasket (4) comprises a first gasket body (41) tightly sealed with the volute (21) and a second gasket body (42) tightly sealed with the air outlet cover (3), the inner sides of the first gasket body (41) and the second gasket body (42) close to the oil smoke circulation position are connected with each other to form a whole, a sealing groove (44) is formed between one side of the first gasket body (41) far away from the volute (21) and one side of the second gasket body (42) far away from the air outlet cover (3), and the mounting part (111) of the air outlet plate (11) is clamped into the sealing groove (44) from the outer side of the sealing groove (44); an air outlet (212) is formed in the volute (21), the air outlet cover (3) comprises a cover body (31) and an opening (32) formed in one side, close to the air outlet plate (11), of the cover body (31), the first cushion body (41) is annular and is matched with the air outlet (212) of the volute (21), and the second cushion body (42) is also annular and is matched with the opening (32); the mouth part (32) of the air outlet cover (3) comprises a first side wall (321) and a second side wall (322) which extend from the end part, close to the air outlet plate (11), of the cover body (31) towards the direction of the air outlet plate (11), the first side wall (321) and the second side wall (322) are annular, the second side wall (322) is arranged on the periphery of the first side wall (321) at intervals, the first side wall (321) and the second side wall (322) are closed between the sides far away from the air outlet plate (11), and a groove (323) which is opened towards the air outlet plate (11) is formed between the first side wall (321) and the second side wall (322); the sealing gasket (4) further comprises a boss (43) arranged on one side, close to the air outlet cover (3), of the second gasket body (42), the boss (43) is also annular, the shape of the boss (43) is matched with the groove (323) so that the boss can be clamped into the groove (323), and parts, located on the inner side and the outer side of the boss (43), of the second gasket body (42) are respectively abutted to corresponding end parts, close to the air outlet plate (11), of the first side wall (321) and the second side wall (322); one side of the groove (323) far away from the air outlet plate (11) extends towards the air outlet plate (11) to form a pressing rib (324), and the pressing rib (324) is integrally positioned in the groove (323) and is pressed with the boss (43).

2. The range hood of claim 1, wherein: the sealing gasket (4) is made of rubber, the height of the first side wall (321) is equal to that of the second side wall (322), the height difference between the pressing rib (324) and the first side wall (321) is h, and the value range of h is 1.0-3.0 mm.

3. The range hood of claim 1 or 2, wherein: the installation part (111) is sunken towards the volute (21), and an outlet (112) corresponding to an air outlet (212) of the volute (21) is formed on the inner side of the installation part (111).

4. The range hood of claim 1 or 2, wherein: sealed corner that fills up (4) and be close to air outlet plate (11) one side, be provided with reference column (45) that extend to air outlet plate (11) direction, locating hole (113) have been seted up to installation department (111) relevant position of air outlet plate (11), reference column (45) can block into in locating hole (113) and realize sealed location of filling up (4) relative air outlet plate (11).