CN216557281U

CN216557281U - Fume exhaust fan

Info

Publication number: CN216557281U
Application number: CN202122778232.8U
Authority: CN
Inventors: 王伟; 刘杰; 陈浩辉
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-05-17
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses a range hood, which comprises an air inlet component and a fan frame arranged above the air inlet component, wherein the air inlet component is communicated with the fluid in the fan frame, and comprises a front side wall and a rear side wall which are arranged at intervals in the front and the rear directions, and the range hood is characterized in that: the front side wall is provided with a first air inlet, and the rear side wall is provided with a second air inlet. Compared with the prior art, the utility model has the advantages that: by arranging the front air inlet and the rear air inlet, the oil smoke escaping from the rear side can be sucked, the oil smoke escaping is reduced, and the oil smoke suction effect is improved; set the filter equipment of second air intake department to two-layer filterable filter screen, can improve grease separation efficiency, the mesh dislocation of two-layer oil net can avoid the greasy dirt to drip from the filter screen, can also increase the striking of oil smoke gas stream, further improves grease separation efficiency, and inside the dislocation can be so that can't see the air inlet subassembly from the rear side, improve the uniformity of whole outward appearance.

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.

The existing range hood mainly has a low suction type in the form that an air inlet is close to a smoke source, for example, a low suction type range hood disclosed in Chinese patent with application number 201120406258.3 comprises a smoke collecting hood with a smoke suction port at the bottom, a fan cover is arranged at the top of the smoke collecting hood, at least one group of fans are arranged in the fan cover, a filter assembly capable of adjusting the air inlet position is further arranged on the smoke suction port, the inside of the smoke collecting hood is hollow, the fan cover is arranged at the center or one side of the top of the smoke collecting hood, and the air inlet of each fan is communicated with the smoke collecting hood.

The existing range hood has the problem that part of oil smoke escapes from the rear side of the range hood and the wall body serving as an installation foundation in the process of rising the oil smoke upwards, so that the oil smoke absorption effect is influenced, the oil smoke is difficult to clean, and the use experience is influenced.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a range hood aiming at the problems in the prior art, which can reduce the escape of oil smoke at the rear side of the range hood and improve the oil smoke absorption effect.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes air inlet subassembly and sets up the fan frame in air inlet subassembly top, the inside fluid intercommunication of air inlet subassembly and fan frame, the preceding lateral wall and the back lateral wall of interval arrangement around the air inlet subassembly includes, its characterized in that: the front side wall is provided with a first air inlet, and the rear side wall is provided with a second air inlet.

In order to filter the oil smoke entering from the second air inlet, the oil-fat separation efficiency is improved, the service life of the fan system is prolonged, and a filtering device is arranged at the second air inlet.

Preferably, for further improving grease separation efficiency, adopt double-deck filterable mode, filter equipment includes first filter screen and the second filter screen of superpose, first filter screen sets up the one side in being close to the air inlet subassembly, the second filter screen sets up the one side in keeping away from the air inlet subassembly.

For the striking of further increase oil smoke gas stream, improve grease separation efficiency, avoid the greasy dirt to drip from filter equipment simultaneously, still avoid seeing inside the air inlet subassembly from the rear side in addition, first mesh has been seted up to first filter screen, the second mesh has been seted up to the second filter screen, first mesh and the crisscross distribution of second mesh.

In order to be convenient for approaching a smoke source, oil smoke is locked in advance, and the oil smoke absorption effect is improved, the first air inlet is close to the bottom of the front side wall, and the second air inlet is close to the bottom of the rear side wall.

In order to facilitate oil and smoke guiding, the part of the rear side wall, provided with the second air inlet, is gradually inclined forwards from top to bottom.

Preferably, be convenient for open and close first air intake, be convenient for hold together the cigarette simultaneously, improve the oil absorption cigarette effect, be provided with on the preceding lateral wall and keep off the cigarette board, keep off the cigarette board and open and close first air intake with overturning.

In order to collect oil stains flowing down in the air inlet assembly and the air rack, the air inlet assembly further comprises a bottom wall arranged between the bottom ends of the front side wall and the rear side wall, an oil cup is arranged at the bottom of the air inlet assembly, and an oil leakage hole is formed in the position, corresponding to the oil cup, of the bottom wall.

In order to facilitate the fluid communication between the fan frame and the air inlet assembly, the air inlet assembly further comprises a top wall arranged between the top ends of the front side wall and the rear side wall, and an opening is formed in the top wall to enable the fluid communication between the air inlet assembly and the fan frame.

Compared with the prior art, the utility model has the advantages that: by arranging the front air inlet and the rear air inlet, the oil smoke escaping from the rear side can be sucked, the oil smoke escaping is reduced, and the oil smoke suction effect is improved; the filtering device at the second air inlet is arranged into two layers of filtering filter screens, so that the grease separation efficiency can be improved, the meshes of the two layers of oil screens are arranged in a staggered manner, oil stains can be prevented from dropping from the filter screens, the impact of oil smoke gas flow can be increased, the grease separation efficiency is further improved, the staggered arrangement can prevent the interior of the air inlet assembly from being seen from the rear side, and the consistency of the overall appearance is improved; the part of the rear side, provided with the air inlet, is arranged to be inclined forwards from top to bottom gradually, so that oil stains can be conveniently guided to flow downwards, and meanwhile, oil smoke is guided to enter the air inlet.

Drawings

Fig. 1 is a schematic view (viewed from the front to the back) of an open state of a range hood according to an embodiment of the present invention;

fig. 2 is a schematic view (from back to front) of an open state of the range hood according to the embodiment of the present invention;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a sectional view of a hidden fan frame of the range hood according to the embodiment of the present invention;

FIG. 5 is an enlarged view of a portion I of FIG. 4;

fig. 6 is a schematic view of a range hood according to an embodiment of the present invention in a closed state.

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 an air intake assembly 1 and a fan frame 2 disposed above the air intake assembly 1, wherein a fan system (not shown) is disposed in the fan frame 2. The air inlet component 1 is communicated with the fluid in the fan frame 2.

The thickness of the air intake component 1 in the front-back direction is smaller than that of the fan frame 2, and the thickness of the air intake component 1 can be adjusted, wherein the front side is the side close to a user in a use state, and the back side is the side far away from the user in the use state. The air inlet component 1 comprises a front side wall 11 and a rear side wall 12 which are arranged at intervals in the front-rear direction, a left side wall 13 is connected between the left ends of the front side wall 11 and the rear side wall 12, a right side wall 14 is connected between the right ends of the front side wall 11 and the rear side wall 12, a top wall 15 is connected between the top ends of the front side wall 11 and the rear side wall 12, and a bottom wall 16 is connected between the bottom ends of the front side wall 11 and the rear side wall 12. Thus, the air intake unit 1 has a hollow box shape. The bottom of the air inlet component 1 is provided with an oil cup 5, and an oil leakage hole 161 can be formed in the bottom wall 16 at a position corresponding to the oil cup 5, so that oil stains can be collected in the oil cup 5 through the oil leakage hole 161.

The front side wall 11 is provided with a first air inlet 17, and the first air inlet 17 is preferably close to the bottom of the front side wall 11. The rear side wall 12 is provided with a second air inlet 18, and the second air inlet 18 is preferably close to the bottom of the rear side wall 12. Therefore, the two air inlets are close to the smoke source, and the oil smoke can be locked well before rising. And through setting up two air intakes in front and back, whole air intake region is wide, can hold together the cigarette better. The rear side wall 12 is preferably inclined forward from top to bottom at the portion where the second air inlet 18 is formed, so as to play a role in guiding the flow. An opening 151 is formed in the top wall 15, so that oil smoke can enter the air inlet assembly 1 through the first air inlet 17 and then enter the fan frame 2 through the opening 151.

The range hood also comprises a smoke baffle 3 arranged on the front side wall 11, the smoke baffle 3 can open and close the first air inlet 17 in a turnover way, and the motion mechanism of the smoke baffle 3 can adopt the prior art.

The second air inlet 18 is provided with a filter device 4, the filter device 4 includes a first filter screen 41 and a second filter screen 42, wherein the first filter screen 41 is disposed at a side close to the inside of the air intake assembly 1, the second filter screen 42 is disposed at a side far away from the inside of the air intake assembly 1, and the two filter screens are stacked. The first screen 41 has a first mesh 411, the second screen 42 has a second mesh 421, and the first mesh 411 and the second mesh 421 are distributed in a staggered manner, that is, the first mesh 411 corresponds to a position where the second screen 42 has no holes, and the second mesh 421 corresponds to a position where the first screen 41 has no holes. The first and

second strainers

41 and 42 are inclined in the same direction as the corresponding portions of the rear side wall 12. Therefore, the inside of the air inlet component 1 is completely sealed when the air inlet component 1 is seen from the rear side, and the inside of the air inlet component 1 cannot be seen. Preferably, in the present embodiment, the first filter screen 41 and the second filter screen 42 are both grid meshes.

At the same time, the first strainer 41 is inclined to guide the oil dirt dropped from above into the oil cup 5. The second screen 42 can receive all the oil stains dropped from the first screen 41 or above and introduce all the oil stains into the oil cup 5.

When the range hood is started to be in a weak gear state, the smoke baffle 3 is closed, referring to fig. 6, and oil smoke enters from the second air inlet 18 at the rear side; when in a strong gear or stir-frying mode, referring to fig. 1 and 2, the smoke baffle 3 is opened, so that oil smoke can be effectively collected, the air inlet area is increased, and the oil smoke enters air from the two air inlets.

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 along a flow path from the first portion and/or 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 element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims

1. The utility model provides a range hood, includes air inlet subassembly (1) and sets up in air inlet subassembly (1) top fan frame (2), the inside fluid intercommunication of air inlet subassembly (1) and fan frame (2), preceding lateral wall (11) and back lateral wall (12) that interval arranged around air inlet subassembly (1) is including, its characterized in that: the front side wall (11) is provided with a first air inlet (17), and the rear side wall (12) is provided with a second air inlet (18).

2. The range hood of claim 1, wherein: and a filtering device (4) is arranged at the second air inlet (18).

3. The range hood of claim 2, wherein: the filter device (4) comprises a first filter screen (41) and a second filter screen (42) which are overlapped, the first filter screen (41) is arranged on one side close to the air inlet component (1), and the second filter screen (42) is arranged on one side far away from the air inlet component (1).

4. The range hood of claim 3, wherein: first mesh (411) have been seted up to first filter screen (41), second mesh (421) have been seted up to second filter screen (42), first mesh (411) and second mesh (421) crisscross distribution.

5. The range hood according to any one of claims 1 to 4, wherein: the first air inlet (17) is close to the bottom of the front side wall (11), and the second air inlet (18) is close to the bottom of the rear side wall (12).

6. The range hood according to any one of claims 1 to 4, wherein: the part of the rear side wall (12) provided with the second air inlet (18) is gradually inclined forwards from top to bottom.

7. The range hood according to any one of claims 1 to 4, wherein: be provided with on preceding lateral wall (11) and keep off cigarette board (31), keep off cigarette board (31) and can open and close first air intake (17) with overturning.

8. The range hood according to any one of claims 1 to 4, wherein: the air inlet assembly (1) further comprises a bottom wall (16) arranged between the bottom ends of the front side wall (11) and the rear side wall (12), an oil cup (5) is arranged at the bottom of the air inlet assembly (1), and an oil leakage hole (161) is formed in the position, corresponding to the oil cup (5), of the bottom wall (16).

9. The range hood according to any one of claims 1 to 4, wherein: the air inlet assembly (1) further comprises a top wall (15) arranged between the top ends of the front side wall (11) and the rear side wall (12), and an opening (151) is formed in the top wall (15) to enable fluid communication between the air inlet assembly (1) and the air frame (2).