CN215832001U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises a box body and an oil cup, and is characterized in that: the box body comprises a bottom plate positioned at the bottom, an air inlet is formed in the bottom plate, a filter screen is arranged at the air inlet, the front end of the filter screen is detachably connected with the bottom plate, and the rear end of the filter screen is in plug-in fit with the bottom plate; the oil cup is arranged below the bottom plate and comprises a front side wall, and the upper end of the front side wall is located on the front side of the splicing position of the filter screen and the bottom plate. Compared with the prior art, the utility model has the advantages that: utilize current structure, do not increase extra structure for the filter screen can support on bottom plate and oil cup, guarantees that the filter screen can not lead to the filter screen directly to drop or produce great rotation angle because of front end fixed mode inefficacy, leads to the filter screen to produce the contact with the object beyond the range hood, reduces the potential safety hazard that the user used.

Description

Fume exhaust fan

Technical Field

The utility model 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 the existing side-draft range hood, a filter screen and a whole machine are fixed together in a mechanical or magnetic suction mode. For example, in the range hood which is disclosed in the chinese patent application No. 201620617919.X and facilitates the disassembly and assembly of the filter screen, the filter screen is installed between the smoke-isolating panel assembly and the flow-guiding plate, the two sides of the flow-guiding plate are installed with the clamping seats, the two sides of the back of the filter screen are respectively installed with the buckles capable of being inserted into the clamping seats correspondingly to fix the position, the lower bending part of the filter screen is provided with at least two slots, the positions of the bending parts on the lower support plate of the filter screen corresponding to the slots on the filter screen are provided with the insertion pieces, and the slots of the filter screen are embedded into the insertion pieces of the lower support plate of the filter screen when the filter screen is installed; still like the structure is dismantled to side suction formula lampblack absorber filter screen that chinese patent application number is 201920988291.8 discloses, including the filter screen draw-in groove for adsorb the magnet on quick-witted case with the filter screen body, magnet is installed on the upper portion of quick-witted case, and the filter screen draw-in groove sets up the lower part at quick-witted case, and the upper end and the magnet contact of filter screen body, the lower extreme of filter screen body are installed in the filter screen draw-in groove.

When the mechanical structure or the magnetic magnet fails, the filter screen rotates around the lower end, so that the pot body is overturned, and therefore improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of the prior art, and provides a range hood which can ensure that a filter screen can be kept at a certain position without contacting with other objects when the front end fixing mode fails, so that the potential safety hazard in use is reduced.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes box and oil cup, its characterized in that: the box body comprises a bottom plate positioned at the bottom, an air inlet is formed in the bottom plate, a filter screen is arranged at the air inlet, the front end of the filter screen is detachably connected with the bottom plate, and the rear end of the filter screen is in plug-in fit with the bottom plate; the oil cup is arranged below the bottom plate and comprises a front side wall, and the upper end of the front side wall is located on the front side of the splicing position of the filter screen and the bottom plate.

Preferably, in order to facilitate the insertion and matching, the end part of the filter screen is provided with a support leg, the lower edge of the bottom plate, which is positioned at the air inlet, is provided with a slot, and the support leg can be inserted into the slot, so that the bottom plate and the filter screen are in insertion and matching; the upper end of the front side wall of the oil cup is positioned on the front side of the slot.

For the grafting structure of avoiding filter screen and bottom plate to lose efficacy easily, the stabilizer blade includes the first portion of bending of extending in to the box by the tip of filter screen and keeps away from the relative filter screen of tip reverse extension's of filter screen second portion of bending by first portion of bending.

Preferably, in order to guide the oil smoke, at least part of the bottom plate is inclined downwards gradually from front to back, the air inlet is formed in the inclined part of the bottom plate, the upper end of the filter screen is detachably connected with the bottom plate, and the lower end of the filter screen is in plug-in fit with the bottom plate.

Preferably, in order to collect oil drops in the tank body, the rear part of the bottom plate extends horizontally, and the oil cup is arranged below the horizontal part of the bottom plate.

Preferably, the detachable connection structure is that the bottom plate is provided with a magnet at the position on the upper edge of the air inlet, and the end part of the filter screen is adsorbed by the magnet and is fixedly connected with the bottom plate in a magnetic attraction matching manner.

Preferably, in order to guide the oil dirt into the oil cup, the front side wall inclines forwards from bottom to top.

Compared with the prior art, the utility model has the advantages that: utilize current structure, do not increase extra part for the filter screen can support on bottom plate and oil cup, guarantees that the filter screen can not lead to the filter screen directly to drop or produce great rotation angle because of front end fixed mode inefficacy, leads to the filter screen to produce the contact with the object beyond the range hood, reduces the potential safety hazard that the user used.

Drawings

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

FIG. 2 is a schematic view of the range hood according to the embodiment of the present invention with the hidden filter screen and the hidden oil cup;

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

FIG. 4 is a schematic view of a filter screen of a range hood according to an embodiment of the present invention;

FIG. 5 is a sectional view of the front end fixing structure of the range hood filter screen according to the embodiment of the present invention in failure;

fig. 6 is an enlarged view of a portion ii of fig. 5.

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 5, a range hood includes a box 1 and a fan system 2 disposed in the box 1. Preferably, the fan system 2 employs a vertically arranged centrifugal fan.

The cabinet 1 may have a substantially hollow rectangular parallelepiped shape, and includes a front panel 11 located at a front side, a bottom panel 12 located at a bottom, and side panels 13 located at left and right sides, the bottom of the front panel 11 being connected to a front end of the bottom panel 12, the side panels 13 being respectively provided at left and right sides of the front panel 11. The front panel 11, the bottom panel 12 and the side panels 13 may be an integral piece or separate panels connected to each other. An air inlet (not shown) is formed in the front panel 11, and a smoke baffle 3 capable of opening or closing the air inlet is arranged on the front side of the front panel 11.

The bottom plate 12 is inclined downward from front to rear, and may be continuously inclined at the rear side portion, or may be a flat plate extending horizontally for facilitating the arrangement of the oil cup 4. The oil cup 4 is disposed below the rear side of the bottom plate 12.

The bottom plate 12 is positioned at the front side of the oil cup, namely, the inclined part of the bottom plate 12 is provided with an air inlet 121, so that the range hood of the utility model forms a double air inlet structure with forward air inlet and downward air inlet. A filter screen 122 is arranged at the air inlet 121. In this embodiment, in order to make the range hood better match the double-range kitchen range, the air inlets 121 are provided on the left and right sides of the bottom plate 12, and the middle of the bottom plate 12 is in a closed state, so that each air inlet 121 corresponds to one kitchen range, and the size of the air inlet 121 is enough to meet the air inlet requirement.

Because the area of the bottom plate 12 at the lower side of the box body 1 is larger, and the distance from the forefront of the box body 1 to the wall body is larger, the oil smoke can collide with the box body 1 with larger probability to escape to the two sides and the rear side of the range hood, and the oil smoke leakage is caused. The air inlet 121 is formed in the bottom plate 12, so that the problem can be effectively solved.

The screen 122 is mounted to the base 12 by a mounting structure including a magnet 123 and a foot 124 extending downwardly from the lower end of the screen 122. The magnet 123 may be fixed at a position of the bottom plate 12 at the upper edge of the air inlet 121, and the upper end (front end) of the filter screen 122 is attracted to the magnet 123, so as to be magnetically coupled with the bottom plate 12 for connection and fixation. The leg 124 includes a first bent portion 1241 extending from the lower end (rear end) of the screen 122 into the housing 1 and a second bent portion 1242 extending downward from the end of the first bent portion 1241 away from the screen 122, and the first bent portion 1241 and the second bent portion 1242 thus form an L-shape. The screen 122 and legs 124 are preferably integrally formed.

The bottom plate 12 has slots 125 at the lower edge of the air inlet 121, and the legs 124 can be inserted into the slots 125 to mate with the bottom plate 12. Thus, both the upper and lower ends of the screen 122 may be secured relative to the base plate 12.

Alternatively, the magnet 123 may be replaced by other mechanical fastening structures known in the art, such as a snap fit, to removably couple the upper end of the screen 122 to the base 12.

The oil cup 4 is in the shape of a box with an open top, and has a front side wall 41, the front side wall 41 is inclined forward from bottom to top, and the upper end of the front side wall 41 is located in front of the slot 125.

Referring to fig. 5 and 6, when the magnet 123 or other fixing structure fails, the filter screen 122 is subjected to gravity, and the front side surface (plane a, the side facing the user in the installed state) of the second bending portion 1242 of the supporting leg 124 rotates forward around the lower edge (pivot 1) of the slot 125 until the front side surface (plane B, the side facing the user in the installed state) of the filter screen 122 touches the upper end (pivot 2) of the front side wall 41 of the oil cup 4, and the angle α between the front side surface of the filter screen 122 and the horizontal direction is greater than 0 °, in the above condition, the plane a is parallel to the plane B, but not limited to being parallel, and other position angles may exist between the plane a and the plane B.

This positional relationship ensures that the screen 122 does not slide off under the force of gravity.

The installation relationship of the oil cup and the filter screen can also be applied to a top-suction type range hood, so that the insertion fit positions of the oil cup and the filter screen are adjacent.

Claims (7)

1. The utility model provides a range hood, includes box (1) and oil cup (4), its characterized in that: the box body (1) comprises a bottom plate (12) positioned at the bottom, an air inlet (121) is formed in the bottom plate (12), a filter screen (122) is arranged at the air inlet (121), the front end of the filter screen (122) is detachably connected with the bottom plate (12), and the rear end of the filter screen (122) is in plug-in fit with the bottom plate (12); the oil cup (4) is arranged below the bottom plate (12), the oil cup (4) comprises a front side wall (41), and the upper end of the front side wall (41) is located on the front side of the splicing position of the filter screen (122) and the bottom plate (12).

2. The range hood of claim 1, wherein: the end part of the filter screen (122) is provided with a supporting leg (124), the lower edge of the air inlet (121) on the bottom plate (12) is provided with an inserting groove (125), and the supporting leg (124) can be inserted into the inserting groove (125), so that the bottom plate (12) is in inserting fit with the filter screen (122); the upper end of the front side wall (41) of the oil cup (4) is positioned at the front side of the slot (125).

3. The range hood of claim 2, wherein: the supporting foot (124) comprises a first bending part (1241) extending from the end part of the filter screen (122) to the inside of the box body (1) and a second bending part (1242) extending from the end part of the first bending part (1241) far away from the filter screen (122) and opposite to the filter screen (122).

4. The range hood according to any one of claims 1 to 3, wherein: bottom plate (12) is at least partly by preceding downward sloping to the back gradually, air intake (121) are seted up on bottom plate (12) inclined part, the upper end and the bottom plate (122) of filter screen (122) can be dismantled and be connected, the lower extreme and the bottom plate (12) cooperation of pegging graft of filter screen (122).

5. The range hood of claim 4, wherein: the rear part of the bottom plate (12) extends horizontally, and the oil cup (4) is arranged below the horizontal part of the bottom plate (12).

6. The range hood according to any one of claims 1 to 3, wherein: the bottom plate (12) is provided with a magnet (123) at the position of the upper edge of the air inlet (121), and the end part of the filter screen (122) is adsorbed by the magnet (123) so as to be connected and fixed with the bottom plate (12) in a magnetic attraction matching manner.

7. The range hood according to any one of claims 1 to 3, wherein: the front side wall (41) is gradually inclined forwards from bottom to top.

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