CN217004596U

CN217004596U - Fume exhaust fan

Info

Publication number: CN217004596U
Application number: CN202220056044.6U
Authority: CN
Inventors: 曾庆毫; 余将存; 陈瑞; 梁雪斐; 曹元�
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-07-19
Anticipated expiration: 2032-01-07

Abstract

The utility model discloses a range hood, which comprises an air inlet assembly, a fan frame and a fan system arranged in the fan frame, wherein an air inlet is formed in the air inlet assembly, the fan system is arranged in a kitchen ceiling, a connecting pipeline is arranged between the air inlet assembly and the fan frame, the connecting pipeline is hollow to form an oil smoke channel, a filtering device is arranged in the oil smoke channel, the filtering device comprises a filter screen and a flow distribution mechanism, the filter screen is used for filtering oil smoke passing through the oil smoke channel, the filter screen is annular, the filter screen is provided with meshes along the peripheral wall, the axis of the filter screen extends forwards and backwards, and the flow distribution mechanism comprises a first baffle and a second baffle which can move along the peripheral surface of the filter screen. Compared with the prior art, the utility model has the advantages that: can realize that the cooking utensils both sides can only one side air inlet through the action of baffle, reduce the energy extravagant, can also reach the flow distribution of controlling the air intake simultaneously, need not promote total amount of wind and can solve the problem that the unilateral fried oil smoke escapes.

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.

At present, in the household cooking process, only one side of the stove is fried, and the other side of the stove does not use or carries out a cooking mode with small oil smoke generation amount. The amount of oil smoke generated at one side of the quick-frying cooker is inevitably far larger than that at the other side, so that the oil smoke is often escaped under the condition of single-side quick-frying cooking, and the common solution is to increase the rotating speed of the impeller, increase the total air volume of the range hood and further improve the oil smoke suction effect at two sides.

However, this method has the following disadvantages:

1) the increase of the rotating speed of the impeller can cause the working noise of the range hood to be greatly increased, the use experience is reduced, and even the health is possibly influenced;

2) because the stir-frying only occurs at one side of the stove, the other side does not need too large air volume, and the air volume is simultaneously increased at the two sides, so that the energy waste at the non-stir-frying side is caused.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a range hood for distributing left and right flow, avoiding escaping of single-side stir-frying oil smoke and reducing energy waste aiming at the defects of the prior art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the utility model provides a range hood, includes air inlet subassembly, fan frame and the fan system of setting in the fan frame, the air intake has been seted up on the air inlet subassembly, the fan system sets up in kitchen furred ceiling, be provided with connecting tube between air inlet subassembly and the fan frame, be cavity and constitute oil smoke passageway, its characterized in that in the connecting tube: be provided with filter equipment in the oil smoke passageway, filter equipment carries out filterable filter screen and flow distribution device including being used for carrying out the oil smoke through the oil smoke passageway, the filter screen is cyclic annularly, the mesh has been seted up along the perisporium to the filter screen to the axis of filter screen extends around, flow distribution device is including first baffle and the second baffle that can remove along the global of filter screen.

Preferably, in order to reduce the space occupied by the range hood, the connecting pipeline is flat, and the thickness of the filter screen in the front-back direction is matched with that of the oil smoke channel.

Preferably, in order to filter all passing oil smoke, the filter screen is circular, the diameter of the filter screen is adapted to the left and right width of the oil smoke passage, and the first baffle and the second baffle are respectively arc-shaped and rotate along the circumferential surface of the filter screen.

Preferably, in order to automatically drive the rotation of the two baffles, the range hood further comprises a movement mechanism for driving the first baffle and the second baffle to rotate, and the movement mechanism comprises a driving mechanism and a transmission mechanism for transmitting the output of the driving mechanism to the first baffle and the second baffle.

Preferably, the driving mechanism is a motor, the driving mechanism is provided with an output shaft, the output shaft is connected with a transmission mechanism, and the transmission mechanism is respectively connected with the first baffle and the second baffle.

In order to facilitate the transmission of torque between the transmission mechanism and the baffle plate, the flow distribution mechanism further comprises a first connecting piece and a second connecting piece, the first connecting piece is arranged between the transmission mechanism and the first baffle plate, and the second connecting piece is arranged between the transmission mechanism and the second baffle plate.

Preferably, in order to enable the baffle to rotate stably, the transmission mechanism is a connecting rod, the first connecting piece and the second connecting piece are respectively fan-shaped plates, and the transmission mechanism is connected to the circle centers of the first connecting piece and the second connecting piece.

In order to facilitate automatic control of the movement of the baffles, on the oil smoke flow path, an oil smoke concentration sensor capable of detecting the concentration of oil smoke and used for controlling the movement of the first baffle and the second baffle is arranged at the upstream of the filtering device, and the oil smoke concentration sensor is provided with two oil smoke concentration sensors which are arranged at intervals from left to right.

Compared with the prior art, the utility model has the advantages that: through setting up annular filter screen to and can be along the baffle of the global removal of filter screen, can realize that the cooking utensils both sides can only one side air inlet through the action of baffle, reduce the energy extravagant, can also reach the flow distribution of controlling the air intake simultaneously, need not promote total amount of wind and can solve the problem that the unilateral fried oil smoke escapes.

Drawings

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

FIG. 2 is a cross-sectional view of a first state of the extractor hood in accordance with the exemplary embodiment of the present invention;

FIG. 3 is a schematic view of a filter device of a range hood according to an embodiment of the present invention;

fig. 4 is an exploded schematic view of a filter device of a range hood according to an embodiment of the present invention;

fig. 5 is a sectional view of a second range hood according to the embodiment of the present invention;

fig. 6 is a sectional view of a range hood according to a third embodiment of the present invention.

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 4, a range hood includes an air intake assembly 1, a fan frame 2, and a fan system 3 disposed in the fan frame 2. The air intake assembly 1 is provided with an air intake 11, and in this embodiment, the air intake 11 is located at the bottom of the front side of the air intake assembly 1. Preferably, the fan system 3 is a centrifugal fan in this embodiment.

In this embodiment, the fan frame 2 and the fan system 3 are installed in a ceiling to form a ceiling range hood. Therefore, the fan system 3 is far away from the user, and has a certain noise advantage. In addition, there is a longer distance between the air intake component 1 and the fan frame 2, so that a connecting pipeline 4 is arranged between the air intake component 1 and the fan frame 2, the connecting pipeline 4 is cuboid and hollow, and a longer oil smoke channel 41 is formed in the connecting pipeline. Through the oil smoke channel 41, the air inlet 11 of the air inlet component 1 is in fluid communication with the fan system 3 in the fan frame 2, and oil smoke can enter the range hood from the air inlet 11 and is finally discharged to the outside or the inside from the fan system 3 to form internal circulation.

In this oil smoke passageway 41, the oil smoke gas stream is comparatively stable, and the velocity of flow is comparatively even, consequently is provided with filter equipment in it, compares in the solution that traditional lampblack absorber is located the range hood air intake, and the whole velocity of flow is even, and the oil smoke filter effect is good. The filter device comprises in the present invention a sieve 5 and a flow distribution mechanism. The filter screen 5 is annular, in particular circular, in order to cover the cooking vapour duct 41 as far as possible during rotation. The sieve 5 is provided with meshes 51 along the peripheral wall, and preferably, the meshes 51 are uniformly distributed. The axial direction of the filter screen 5 is not limited, and the oil smoke can be filtered by the filter screen 5 before reaching the fan system 3.

In order to reduce the occupied space, the connecting duct 4 is in a flat shape, and therefore, it is preferable that the axis of the screen 5 is extended in the front-rear direction, the thickness of the screen 5 in the front-rear direction is adapted to the thickness of the smoke passage 41, the screens 5 are symmetrically arranged in the smoke passage 41 in the left-right direction, and the diameter of the longitudinal section of the screen 5 is adapted to the left-right width of the smoke passage 41. In the present embodiment, "fit" means that the two are close to each other in size, so that the filter screen 5 filters the oil smoke in the oil smoke channel 41 as much as possible, and the oil smoke is prevented from directly entering the fan system 3 without being filtered.

The flow distribution mechanism comprises a first baffle 71, a second baffle 72, a first connecting piece 73 and a second connecting piece 74, wherein the first baffle 71 and the second baffle 72 are arc-shaped and matched with the peripheral surface of the filter screen 5, namely the thicknesses in the front-back direction are the same, and the first baffle 71 and the second baffle 72 can cover one section of the peripheral surface of the filter screen 5, so that the oil smoke is prevented from passing through the section. The first connecting member 73 is linked with the first baffle 71, and the second connecting member 74 is linked with the second baffle 72, in this embodiment, the first connecting member 73 is integrally formed with the first baffle 71, and the second connecting member 74 is integrally formed with the second baffle 72. Preferably, the first connecting member 73 and the second connecting member 74 are both plate members in the shape of a sector, and the arc ends of the sector are matched with the corresponding baffle plates. The first connector 73 is near the front end of the sieve 5 and the second connector 74 is near the rear end of the sieve 5. Alternatively, the first connector 73 and the second connector 74 may be located at any position in the axial direction of the screen 5 as long as the two connectors do not interfere with each other.

The range hood further comprises a moving mechanism for driving the first connecting member 73 and the second connecting member 74 to rotate, the moving mechanism comprises a driving mechanism 61 and a transmission mechanism 62, the driving mechanism 61 is preferably a motor, is arranged outside the connecting pipe 4, has an output shaft 611, extends in the front-rear direction, and partially extends into the connecting pipe 4, so that the connecting pipe 4 can support the output shaft 611. The output shaft 611 is connected with the transmission mechanism 62, and the transmission mechanism 62 is respectively connected with the respective centers of the first connecting element 73 and the second connecting element 74, which may be fixed by plugging. In this embodiment, the transmission 62 is a link, more preferably a straight rod, extending along the axis of the sieve 5. A lever can be provided on the first connecting element 73 and the second connecting element 74, which lever is inserted into the center of the circle, in order to connect the gear 62. Therefore, the driving mechanism 61 is in transmission connection with the first connecting piece 73 and the second connecting piece 74 respectively, and can drive the first baffle 71 and the second baffle 72 to rotate along the inner side of the peripheral surface of the filter screen 5 respectively, and the rotation axis is the axis of the filter screen 5. In that

The range hood further includes two oil smoke concentration sensors 8 disposed adjacent to the air inlet 11 to detect the oil smoke concentration at the air inlet 11, in this embodiment, the two oil smoke concentration sensors 8 may be disposed on the left and right sides, respectively. Other positions may be provided as long as they are located upstream of the screen 5 in the lampblack flow path.

Through setting up filter screen 5, can increase the interception scope to the oil smoke, improve grease separation efficiency, and can throw away the grease at the pivoted in-process, avoid the grease to adhere to on filter screen 5, keep better grease separation effect.

According to the requirement of actual oil smoke absorption, only one-side (left or right) air inlet can be realized by rotating the two baffles, as shown in figure 2, the two baffles are positioned on the left side, and at the moment, the right side enters air, as shown in figure 5, the two baffles are positioned on the right side, and at the moment, the left side enters air; or the air can be adjusted to be supplied to two sides, as shown in fig. 6, the two baffles are respectively positioned at the left upper side and the right upper side, and the oil smoke enters from the lower half part of the filter screen 5 and flows out upwards from the part between the two baffles.

In addition, can also adjust two baffles and shelter from the air inlet area on left and right sides through oil smoke concentration N1, N2 that oil smoke concentration sensor 8 detected for left and right air inlet area S1: s2 — N1: n2, real-time intelligent distribution of the intake about realizing.

When the filter screen 5 is in other ring shapes than a circular ring, the two baffles move linearly and non-linearly along the circumference of the filter screen 5. Further, alternatively, the first connecting member 73 and the second connecting frame 74 may be rod members or plate members of other shapes.

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), fan frame (2) and sets up fan system (3) in fan frame (2), air intake (11) have been seted up on air inlet subassembly (1), fan system (3) set up in kitchen furred ceiling, be provided with connecting tube (4) between air inlet subassembly (1) and the fan frame (2), be cavity and constitute oil smoke passageway (41), its characterized in that in connecting tube (4): be provided with filter equipment in oil smoke passageway (41), filter equipment includes and is used for carrying out filterable filter screen (5) and flow distribution mechanism to the oil smoke through oil smoke passageway (41), filter screen (5) are cyclic annularly, mesh (51) have been seted up along the perisporium in filter screen (5) to the axis of filter screen (5) is extended around, flow distribution mechanism is including first baffle (71) and second baffle (72) that can remove along the global of filter screen (5).

2. The range hood of claim 1, wherein: the connecting pipeline (4) is flat, and the thickness of the filter screen (5) in the front-back direction is matched with that of the oil smoke channel (41).

3. The range hood of claim 2, wherein: the filter screen (5) is circular ring-shaped, the diameter of the filter screen (5) is matched with the left and right width of the oil smoke channel (41), and the first baffle (71) and the second baffle (72) are arc-shaped and rotate along the circumferential surface of the filter screen (5).

4. The range hood of claim 3, wherein: the range hood further comprises a movement mechanism for driving the first baffle plate (71) and the second baffle plate (72) to rotate, wherein the movement mechanism comprises a driving mechanism (61) and a transmission mechanism (62) for transmitting the output of the driving mechanism (61) to the first baffle plate (71) and the second baffle plate (72).

5. The range hood of claim 4, wherein: the driving mechanism (61) is a motor, the driving mechanism (61) is provided with an output shaft (611), the output shaft (611) is connected with a transmission mechanism (62), and the transmission mechanism (62) is respectively connected with the first baffle plate (71) and the second baffle plate (72).

6. The range hood of claim 5, wherein: the flow distribution mechanism further comprises a first connecting piece (73) and a second connecting piece (74), wherein the first connecting piece (73) is arranged between the transmission mechanism (62) and the first baffle plate (71), and the second connecting piece (74) is arranged between the transmission mechanism (62) and the second baffle plate (72).

7. The range hood of claim 6, wherein: the transmission mechanism (62) is a connecting rod, the first connecting piece (73) and the second connecting piece (74) are respectively fan-shaped plates, and the transmission mechanism (62) is connected to the circle centers of the first connecting piece (73) and the second connecting piece (74).

8. The range hood according to any one of claims 1 to 7, wherein: on the oil smoke flow path, an oil smoke concentration sensor (8) capable of detecting the oil smoke concentration and used for controlling the movement of the first baffle (71) and the second baffle (72) is arranged at the upstream of the filtering device, and the oil smoke concentration sensor (8) is provided with two arranged at intervals at the left and the right.