CN113639283B

CN113639283B - Fume exhaust fan

Info

Publication number: CN113639283B
Application number: CN202110831651.5A
Authority: CN
Inventors: 王磊; 施旭娜
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-10-21
Anticipated expiration: 2041-07-22
Also published as: CN113639283A

Abstract

The invention discloses a range hood, which comprises an upper box body and a lower box body, wherein the upper box body is fixedly arranged, the lower box body can lift relative to the upper box body, the lower box body at least wraps the periphery of the upper box body at the top, and a gap is formed between the wrapped position and the upper box body, and the range hood is characterized in that: the outer side periphery of the upper box body and the inner side wall of the lower box body, which is wrapped on the outer periphery of the upper box body, are provided with sealing components, the outer side periphery of the upper box body and the inner side wall of the lower box body, which is wrapped on the outer periphery of the upper box body, are provided with bulges, when the lower box body is lifted relative to the upper box body, the sealing components and the bulges can be in a joint state to seal a gap between the upper box body and the lower box body, and the sealing components and the bulges can also be in a longitudinally staggered state to enable the upper box body and the lower box body to be in clearance fit.

Description

Cooking fume exhauster

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.

In order to reduce a negative pressure area or an air inlet and improve the oil smoke absorption effect, the conventional range hood is provided with a lifting structure. The lifting structure and the oil way solving method mainly comprise the following three modes:

1. the diversion component (the rectifying plate, the smoke guide plate and the like) goes up and down: a range hood as disclosed in the chinese patent with application number 201811419513.0, comprising: the range hood body is provided with an air suction port; the smoke guide plates are provided with at least two smoke guide plates and are combined to cover the air suction ports; and the lifting mechanism is arranged between the smoke guide plate and the range hood body and drives the smoke guide plate to move between the exhaust inlet and the cooking bench. This kind of structure is limited to the promotion effect of smoking cigarette effect, forms certain oil storage space through the hem of smoke deflector self moreover usually, when fluid is more, can have the risk of overflowing.

2. Lifting the whole machine: for example, the combination of the electric lifter and the movable hanger of the range hood disclosed in the Chinese patent with the application number of 200920127994.8 comprises a motor, a gearbox and the movable hanger which are sequentially connected, wherein the motor and the gearbox are connected with a gearbox steel wire rope, and the hanger and the range hood are hung at the lower end. The whole machine with the structure completely descends, the influence on the oil path is avoided, the oil path is similar to a fixed form and is collected by the oil collecting cup at the bottom, but the lifting mode further compresses the operation space of a user, meanwhile, the distance between the fan and the user is reduced after the oil path descends, the noise is further increased, and the user experience is reduced.

3. The smoke collecting cavity is lifted: the range hood disclosed in chinese patent application No. 20201039762.5 of the present applicant comprises a movable component, a fixed component and a moving mechanism for manually driving the movable component to ascend and descend relative to the fixed component, wherein the movable component comprises a smoke collecting hood, the fixed component comprises a fan frame, the movable component further comprises a moving frame disposed above the smoke collecting hood, an air inlet is formed in the smoke collecting hood, the lower end of the moving frame is connected to the periphery of the air inlet, and the moving frame covers the periphery of the fan frame. To this kind of over-and-under type structure of box on lower box cladding, for avoiding interfering, can have certain clearance between two boxes, lead to the leakproofness to be lacked, the fluid that the fan system was thrown away can not pass through lower box and drip, consequently often needs the design of two oil cups just can satisfy the demand of gathering oil, nevertheless sets up the exquisite degree that two oil cups not only can reduce the complete machine, still greatly increased the clear degree of difficulty of user.

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, which can provide better sealing performance, improve the range hood effect and solve the problem of an oil path under a single oil collecting device.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes the last box of fixed setting and the lower box that the box goes up and down relatively, the box has clearance, its characterized in that at least at the periphery of last box and between the position of parcel and last box at the top parcel down: the outer side periphery of the upper box body and the inner side wall of the lower box body, which is wrapped on the outer periphery of the upper box body, are provided with sealing components, the outer side periphery of the upper box body and the inner side wall of the lower box body, which is wrapped on the outer periphery of the upper box body, are provided with bulges, when the lower box body is lifted relative to the upper box body, the sealing components and the bulges can be in a joint state to seal a gap between the upper box body and the lower box body, and the sealing components and the bulges can also be in a longitudinally staggered state to enable the upper box body and the lower box body to be in clearance fit.

Preferably, in order to reduce the risk of breaking the sealing strip, the sealing assembly comprises a sealing strip, and the sealing strip comprises a base body for fixing with one of the upper box body and the lower box body and a sealing edge extending from the base body to the protrusion.

In order to facilitate the fixed installation of the sealing strip and the box body, the sealing assembly further comprises a supporting strip for fixing the sealing strip and one of the upper box body and the lower box body.

In order to facilitate air inlet, the direct dripping of fluid of the upper box body is avoided simultaneously, the bottom of the lower box body is provided with a partition plate, an air inlet is formed in the partition plate, and the partition plate enables a closed area to be formed between the edge of the air inlet and the inner side wall of the lower box body.

In order to facilitate preliminary filtration of oil smoke, a filter screen is arranged below the air inlet and gradually inclines backwards, an oil cup is arranged at the bottom of the rear side of the lower box body, and the rear end of the filter screen is positioned above the oil cup.

In order to be convenient for receiving oil flowing down from the air inlet, the partition plate is gradually inclined downwards from the periphery to the edge of the air inlet, and the filter screen is in a closed state at least at the edge corresponding to the air inlet.

For avoiding the direct air intake drippage of fluid on the fan system, go up the internal fan system that is provided with of box, the below of fan system is provided with leads oily piece, it is preceding by leading to the setting of backward slope gradually to lead oily piece, the rear end of leading oily piece corresponds the closed area of rear side.

For enlarging the air inlet scope, avoid the left and right sides fluid drippage of box position down in the box parcel simultaneously, the ascending width of air intake left and right sides is greater than the ascending width of box about, the top surface part downwardly extending that the box was located last box periphery down is formed with the extension, the arch sets up on the extension, and the bottom of controlling two extensions is extended to the corresponding side of box down and is formed with the backup pad, the backup pad is by the corresponding side downward sloping of extension downward box gradually, the closed region of box under the lower extreme correspondence of backup pad.

In order to adjust the lifting stroke of the lower box body and ensure that sealing is kept when different strokes are performed, the top surface part of the periphery of the upper box body of the lower box body extends downwards to form an extension part, the protrusions are arranged on the extension part, and the protrusions are at least two and are arranged at intervals in the longitudinal direction.

Compared with the prior art, the invention has the advantages that: the upper box body and the lower box body are respectively provided with the bulge and the sealing component, so that when the range hood is in a non-working state, the upper box body and the lower box body are in clearance fit, a sufficient space is provided for lifting motion, abnormal friction sound is prevented, abrasion and fatigue fracture caused by long-time friction between the sealing strip and the lower box body are avoided, the exposed surface of the upper box body is also prevented from contacting with oil stains in the lower box body, the cleanness of the outer surface of the range hood is ensured, when the range hood is in a working state, the bulge and the sealing component are tightly attached to seal the clearance between the upper box body and the lower box body, and pressure release is avoided; by forming a closed area at the edge of the air inlet, the oil at the edges of the upper box body and the lower box body can be prevented from directly dripping; through setting up the backup pad, can guide fluid flow to the closed area of air intake left and right sides, avoid directly dripping from the centre.

Drawings

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

fig. 2 is a sectional view (left-right direction section) of the range hood in a closed state according to the 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 a sealing assembly of the range hood according to the embodiment of the present invention;

fig. 5 is an exploded view of the sealing assembly of the range hood according to the embodiment of the present invention;

fig. 6 is a schematic view of a fan frame and a sealing assembly of the range hood according to the embodiment of the invention;

fig. 7 is a sectional view (front-rear section) of a range hood according to an embodiment of the present invention in a closed state;

fig. 8 is a sectional view (left-right direction section) of the range hood according to the embodiment of the present invention in an open state;

fig. 9 is an enlarged view of part II of fig. 8.

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 "center," "longitudinal," "transverse," "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 simplicity in description, but do not indicate or imply that the devices or elements so referred to must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are illustrative only and are not to be construed as limiting since the disclosed embodiments of the invention can be positioned in different orientations, e.g., "upper" and "lower" are not necessarily limited to directions opposite or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 5, a range hood includes an upper box 1 and a lower box 2, the lower box 2 wraps the periphery of the upper box 1 at least at the top, and a gap is formed at the wrapping position so that the lower box 2 can be lifted, and most of the upper box 1 is located above the lower box 2.

Go up and be provided with fan system 3 in the box 1, lower box 2 is roughly cuboid shape, is cavity in it, goes up the interior fluid intercommunication of box 1 and lower box 2 from this. An air inlet 21 is formed in the bottom of the lower box body 2, and the air inlet 21 enables the space below the lower box body 2 to be communicated with the fluid in the upper box body 1. Therefore, when the fan system 3 works, oil smoke can enter the lower box body 2 through the air inlet 21 and then enter the upper box body 1, and is discharged to the indoor or outdoor space through the fan system 3.

Referring to fig. 7 and 8, a partition 22 is disposed at the bottom of the lower box 2, the air inlet 21 is disposed on the partition 22, the partition 22 gradually inclines downward from the periphery to the edge of the air inlet 21, and the partition 22 forms a closed area between the edge of the air inlet 21 and the inner side wall of the lower box 2. The width of the air inlet 21 in the left-right direction is larger than that of the upper case 1 in the left-right direction. A filter screen 4 is arranged below the air inlet 21, so that the oil smoke can be primarily filtered. The filter screen 4 is gradually inclined downwards from front to back. The left side and the right side of the upper box body 1 are positioned right above the air inlet 21, the filter screen 4 is partially closed, namely, the meshes 41 of the filter screen 4 are not filled with the whole filter screen 4, in the embodiment, the filter screen 4 is in a closed state at the edge corresponding to the air inlet 21 and is not provided with meshes, and therefore oil can be prevented from dripping downwards.

The rear side bottom of lower box 2 is provided with oil cup 6, and filter screen 4 is by preceding backward downward sloping gradually, and the rear end of filter screen 4 is located the top of oil cup 6, and the fluid of condensation can flow into in the oil cup 6 from this on the filter screen 4 and collect.

When the range hood is in a working state, the upper box body 1 is fixed, and the lower box body 2 can move relative to the upper box body 1 along the vertical direction, so that the air inlet 21 is lifted.

Referring to fig. 2 to 5, the upper box 1 is a hollow cuboid, a sealing assembly 5 is arranged on the periphery of the outer side of the bottom of the upper box, and the sealing assembly 5 is higher than each wall surface of the upper box 1. Lower box 2 is located and is provided with arch 23 on the inside wall of last box 1 periphery, can cooperate with seal assembly 5 to realize going up the box 1 and sealing down between the box 2. The sealing assembly 5 comprises a sealing strip 51 and a supporting strip 52, wherein the sealing strip 51 is made of a material with good oil resistance and elasticity, such as nitrile rubber, and is tightly attached to the upper box body 1, the supporting strip 52 is made of a hard material and is supported on one side, far away from the upper box body 1, of the sealing strip 51, and the supporting strip 52 can be fixedly connected with the upper box body 1, so that the sealing strip 51 can be conveniently and fixedly mounted, and the sealing strip 51 can be prevented from being deformed to be separated from the upper box body 1, and the sealing effect is influenced. Alternatively, the seal strip 51 may be felt. The longitudinal section of the sealing strip 51 is preferably in a transverse U shape, one side of the sealing strip away from the upper box body 1 is opened, and the longitudinal size of the bulge 23 is matched with the size of the opening of the sealing strip 51, so that two edges of the U-shaped sealing strip 51 can be respectively attached to the bulge 23, and sealing is realized. The support strip 52 is now located between the two sides of the U-shaped sealing strip 51. The sealing tape 51 may be sealed in more layers by three or more sides of the W shape, as long as the sealing tape 51 has the supporting strip 52, the base 511 fixed to the upper box 1, and the sealing edge 512 capable of being attached to the protrusion 23, and the sealing edge 512 extends from the base 511 to the protrusion 23. Alternatively, the positions of the projection 23 and the seal assembly 5 may be interchanged.

The top surface of the lower case 2 located at the outer periphery of the upper case 1 is formed with an extension 24 extending downward, and a protrusion 23 is formed by the extension 24 protruding toward the upper case 1, and the protrusion 23 is formed by the extension 24 protruding rightward at the left side of the upper case 1 on the lower case 2. The projection 23 may also be a part separately provided on the extension 24. The sealing members 5 may be provided on the front, rear, left, and right sides of the upper casing 1, and the protrusions 23 may be formed on the corresponding four sides of the lower casing 2.

Referring to fig. 2 and 3, when the range hood is in a non-working state, the protrusion 23 and the sealing assembly 5 are arranged in a staggered manner in the longitudinal direction, so that the upper box body 1 and the lower box body 2 are in clearance fit, a sufficient space is provided for lifting motion, abnormal friction sound is prevented, abrasion and fatigue fracture caused by long-time friction of the sealing strip 51 and the lower box body 2 are avoided, meanwhile, the friction resistance in the lifting motion process is reduced, oil stain contact between an exposed surface of the upper box body 1 and the lower box body 2 can also be avoided, and the cleanness of the outer surface of the range hood is ensured. During the lifting process, the swing amplitude of the sealing strip 51 caused by the contact of the protrusions 23 is small, the bending is distributed on the whole rubber strip, the bending angle of the transition position of the base body 511 and the sealing edge 512 of the sealing strip 51 is basically negligible, and therefore the risk of breakage of the sealing strip 51 is extremely low.

Referring to fig. 8 and 9, when the range hood is in an operating state, the lower case 2 descends a certain distance to make the protrusion 23 and the sealing component 5 cling to each other, so that the gap between the upper case 1 and the lower case 2 is sealed to avoid pressure release. In order to allow the lower case 2 to be lowered with adjustable height, at least two protrusions 23 may be formed on the extension portion 24, and the protrusions 23 may be spaced apart in the longitudinal direction.

Referring to fig. 2 and 7, an oil guiding member 31 is disposed below the fan system 3, the oil guiding member 31 may be in a groove shape with two sides higher than the middle, the oil guiding member 31 is disposed to be inclined downward from front to back, the condensed oil inside and outside the fan system 3 flows downward into the oil guiding member 31, and the rear end of the oil guiding member 31 corresponds to the closed area at the inner rear side of the lower case 2, so that the condensed oil can be guided to the rear side to avoid the air inlet 21 of the lower case 2, and finally, the condensed oil drops into the closed area of the lower case 2 (formed by disposing the partition plate 22 as described above). The rest condensed oil in the upper box body 1 also flows or drops into the lower box body 2 under the action of gravity.

The bottom ends of the left and right extending parts 24 in the lower box body 2 extend to the corresponding side of the lower box body 2 to form supporting plates 25, the supporting plates 25 are gradually inclined downwards from the extending parts 24 to the corresponding side of the lower box body 2, if the supporting plates 25 on the left side are gradually inclined downwards from the right to the left, the supporting plates 25 on the right side are gradually inclined downwards from the left to the right. The two support plates 25 are formed in a splayed shape, and the inclined surfaces of the support plates 25 guide the condensed oil to both side surfaces to prevent the condensed oil from dropping on the upper portion of the air inlet 21.

The oil on the periphery of the upper box 1 or the part of the lower box 2 wrapped on the periphery of the upper box 1 flows downwards along the extension part 24 and the support plate 25 and finally flows downwards along the inner wall surface of the lower box 2 at the lowest position of the support plate 25 or directly drops on the closed area on the periphery of the air inlet 21 and is collected into the oil cup 6 backwards along the filter screen 4.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow from the first portion along a flow path or/and be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third member, such as a fluid channel, e.g., a pipe, a channel, a conduit, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow therethrough, or a combination thereof.

Claims

1. The utility model provides a range hood, includes fixed last box (1) that sets up and lower box (2) that can go up box (1) relatively go up and down, lower box (2) at least have clearance, its characterized in that at the periphery of the parcel at last box (1) and between the position of parcel and last box (1) at the top parcel: go up the outside periphery of box (1) and the parcel of lower box (2) and be provided with seal assembly (5) on one of them of the inside wall of last box (1) periphery, the outside periphery of going up box (1) and the parcel of lower box (2) are provided with protruding (23) on another in the inside wall of last box (1) periphery, when box (2) goes up and down relatively, seal assembly (5) and protruding (23) can be in the laminating state and with the clearance seal between last box (1) and lower box (2), seal assembly (5) and protruding (23) can also be in the state of vertically going up the dislocation arrangement and make and go up box (1) and lower box (2) clearance fit.

2. The range hood of claim 1, wherein: the sealing assembly (5) comprises a sealing strip (51), wherein the sealing strip (51) comprises a base body (511) used for being fixed with one of the upper box body (1) and the lower box body (2) and a sealing edge (512) extending from the base body (511) to the protrusion (23).

3. The range hood of claim 2, wherein: the sealing assembly (5) further comprises a support strip (52) for fixing the sealing strip (51) with one of the upper box body (1) and the lower box body (2).

4. A range hood according to any one of claims 1 to 3, wherein: the bottom of the lower box body (2) is provided with a partition plate (22), an air inlet (21) is formed in the partition plate (22), and the partition plate (22) enables a closed area to be formed between the edge of the air inlet (21) and the inner side wall of the lower box body (2).

5. The range hood of claim 4, wherein: the air intake is characterized in that a filter screen (4) is arranged below the air inlet (21), the filter screen (4) is gradually inclined towards the back, an oil cup (6) is arranged at the bottom of the rear side of the lower box body (2), and the rear end of the filter screen (4) is positioned above the oil cup (6).

6. The range hood of claim 5, wherein: baffle (22) are by peripheral slope down to air intake (21) edge gradually, filter screen (4) are the enclosed condition at least at corresponding air intake (21) edge.

7. The range hood of claim 4, wherein: go up and be provided with fan system (3) in box (1), the below of fan system (3) is provided with leads oily piece (31), it is by preceding to backward slope setting gradually to lead oily piece (31), the rear end of leading oily piece (31) corresponds the closed area of rear side.

8. The range hood of claim 4, wherein: air intake (21) width on the left and right sides direction is greater than last box (1) width on the left and right sides direction, box (2) are located the top surface part downwardly extending of last box (1) periphery down and are formed with extension (24), arch (23) set up on extension (24), and the bottom of controlling two extensions (24) extends to the corresponding side of box (2) down and is formed with backup pad (25), backup pad (25) are by extension (24) down the corresponding side of box (2) downward sloping gradually, the lower extreme of backup pad (25) corresponds the closed region of box (2) down.

9. The range hood according to any one of claims 1 to 3, wherein: the lower box body (2) is provided with an extension part (24) extending downwards from the top surface part of the periphery of the upper box body (1), the bulge (23) is arranged on the extension part (24), and the bulge (23) is provided with at least two bulges and is arranged at intervals in the longitudinal direction.