CN115247815A - Range hood and working method - Google Patents

Abstract

The invention relates to a range hood, which comprises a fan cover, a fan arranged in the fan cover, a connecting cover arranged below the fan cover, a first smoke collecting hood and a second smoke collecting hood, wherein the first smoke collecting hood and the second smoke collecting hood can be rotatably connected to the connecting cover in a relatively opening and closing manner, and the connecting cover is respectively communicated with the first smoke collecting hood, the second smoke collecting hood and the fan cover. The invention also relates to a working method of the range hood, when the range hood is started to work, the first smoke collecting hood and the second smoke collecting hood are controlled to be relatively opened; after the range hood stops working, the first smoke collecting hood and the second smoke collecting hood are controlled to be closed relatively. The range hood can prevent oil stain and peculiar smell from overflowing, and can adjust the rising path of oil smoke to reduce the escape of the oil smoke.

Description

Range hood and working method

Technical Field

The invention relates to a range hood and also relates to a working method of the range hood.

Background

In order to keep the kitchen environment clean and human health, the range hood has become one of the essential household appliances in modern household kitchens. After the range hood is used for a long time, a large amount of oil stains can be condensed inside the range hood. The greasy dirt adhesion can aggravate the impeller load on the impeller of lampblack absorber, blocks up the blade clearance, leads to the range hood noise aggravation. In addition, the air inlet of the top-suction range hood is usually exposed outside, so that the oil stain adsorbed on the inner cavity of the range hood can emit peculiar smell through the air inlet and is diffused to a kitchen to influence the health of people.

The existing market has appeared the range hood that can realize self-cleaning, for example the steam self-cleaning formula range hood that the chinese patent with application number 201820956668.7 disclosed, it includes: the range hood body, locate this internal impeller of range hood, steam self-cleaning formula range hood still includes steam cleaning module, and steam cleaning module includes the heating pipe, and the end of intaking of heating pipe is connected with the water pump, and the play water end of heating pipe has the nozzle through going out water piping connection, and the nozzle aims at the impeller. Thus, the self-cleaning is realized by spraying cleaning liquid such as water or steam to the blades through the nozzles. However, such a range hood usually can only perform local cleaning, and the nozzle in the cleaning module is exposed in the oil smoke environment, so that the nozzle is blocked in the long-term use of the range hood, and the self-cleaning function is gradually lost, and the process of blocking the nozzle gradually increases the burden of the water pump, and even the water pump is burnt out. In the cleaning process, the washing liquid need last to spout outward and guarantee the cleaning performance, can't realize the reuse of cleaning solution, can consume a large amount of cleaning solution and water resource.

In addition, a smoke collecting hood of a common top-suction range hood is arranged below a fan frame, the position of the smoke collecting hood relative to a kitchen range top is high, the oil smoke can be exploded, lifted, diffused and the like during cooking, the top-suction range hood generally sucks the smoke at the oil smoke diffusion position, and especially when single-side stir-frying is performed during the cooking process, the situation that the oil smoke escapes from one side of the range hood easily occurs.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a range hood capable of preventing oil stain odor from overflowing and adjusting rising path of oil smoke to reduce oil smoke from escaping, aiming at the above prior art.

A second technical problem to be solved by the present invention is to provide a range hood capable of performing a complete cleaning of a path through which oil smoke flows, and capable of realizing a cyclic utilization of steam to reduce a consumption amount of a cleaning liquid, in view of the above-mentioned prior art.

The third technical problem to be solved by the present invention is to provide a working method of the aforementioned range hood in view of the above prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a range hood, includes fan guard, sets up the fan in fan guard, its characterized in that: still including connecting cover, first collection petticoat pipe, the second collection petticoat pipe that sets up fan cover below, first collection petticoat pipe, second collection petticoat pipe rotate relatively to be connected on connecting the cover, connecting the cover and being linked together with first collection petticoat pipe, second collection petticoat pipe, fan cover respectively.

Preferably, first collection petticoat pipe, second collection petticoat pipe arrange along left right direction and distribute in the place ahead of connecting the cover, first collection petticoat pipe, second collection petticoat pipe all have the rotation portion of rotation connection on connecting the cover, the axis of rotation portion extends along fore-and-aft direction, have the passageway that is used for the intercommunication to connect the cover in the rotation portion.

In order to facilitate the rotary installation of the first smoke collecting hood and the second smoke collecting hood, a connecting plate extending forwards is arranged on the front side surface of the connecting hood, and smoke inlets are respectively formed in the two sides of the connecting plate on the front side surface of the connecting hood;

the rotating parts of the first smoke collecting hood and the second smoke collecting hood are both cylindrical, the front end of the rotating part is covered with a front end plate, the rear end of the rotating part is provided with an opening and communicated with the connecting hood, and the rear end of the rotating part is provided with an embedding part which is rotatably embedded in the smoke inlet;

the front end of connecting plate is buckled to the place ahead of the rotation portion of first collection petticoat pipe, second collection petticoat pipe respectively and is provided with the fixed plate, the fixed support column that is provided with on the fixed plate, all fixed being equipped with first motor in the rotation portion of first collection petticoat pipe, second collection petticoat pipe, the pivot of first motor is connected with the support column.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the first smoke collecting cover and the second smoke collecting cover are closed to form a containing cavity at the closing position, and a cleaning assembly capable of extending into the containing cavity is arranged in the connecting cover.

Preferably, first collection petticoat pipe, second collection petticoat pipe all include the housing that has the opening and cover the filter screen on the opening, be equipped with the depressed area on the filter screen of first collection petticoat pipe and/or second collection petticoat pipe, the depressed area of first collection petticoat pipe and/or second collection petticoat pipe forms after first collection petticoat pipe, second collection petticoat pipe are to closing the holding chamber.

Preferably, the filter screens of the first smoke collecting hood and the second smoke collecting hood are arranged in a step-shaped bending mode to form the depressed area.

In order to ensure that the cleaning component is not polluted by oil smoke, an installation space which is independent of the oil smoke passing channel is arranged in the connecting cover, and the cleaning component is movably arranged in the installation space.

Preferably, a driving mechanism for driving the cleaning assembly to move is further arranged in the installation space.

The cleaning device is simple in structure, the driving mechanism comprises a second motor and a gear connected to the driving end of the second motor, and a rack meshed with the gear is arranged on the cleaning assembly.

Preferably, the cleaning assembly includes a water tank, a heating pipe connected to the water tank through a connecting pipe, a fan capable of extending into the accommodating chamber, and a nozzle disposed at an outlet of the heating pipe and extending into the fan.

The technical scheme adopted by the invention for solving the third technical problem is as follows: the working method of the range hood is characterized in that: the range hood is the range hood as described above;

when the range hood starts to work, the first smoke collecting hood and the second smoke collecting hood are controlled to be opened relatively;

and after the range hood stops working, the first smoke collecting hood and the second smoke collecting hood are controlled to be relatively closed.

The technical scheme adopted by the invention for solving the third technical problem is as follows: a working method of a range hood is characterized in that: the range hood is the range hood as described above;

when the range hood works, the opening angles of the first smoke collecting hood and the second smoke collecting hood relative to the involution surface are adjusted based on the smoke concentration on the left side and the right side of the lower part.

The technical scheme adopted by the invention for solving the third technical problem is as follows: the working method of the range hood is characterized in that: the range hood is the range hood as described above;

when the range hood needs to carry out self-cleaning, the first smoke collecting hood and the second smoke collecting hood are controlled to be in a relatively closed state; the cleaning assembly is controlled to move into an accommodating cavity formed by the first smoke collecting hood and the second smoke collecting hood after being closed, and then the cleaning assembly is controlled to work to generate cleaning steam, so that the cleaning steam circularly flows in the circulating path;

the circulation path is the path that first collection petticoat pipe, the left side wind channel of connecting the cover, fan cover, the right side wind channel of connecting the cover, second collection petticoat pipe inner space formed.

Compared with the prior art, the invention has the advantages that: the two fume collecting hoods of the range hood can be rotatably arranged in a relatively opening and closing manner and are communicated with the fan hood through the connecting hood. On the one hand, the two smoke collecting covers form two oil smoke channels through self structures so as to better suck the oil smoke on the left side and the right side below. On the other hand, the two smoke collecting hoods are oppositely combined when the oil smoke is not sucked, so that the problem that the oil stain in the smoke collecting hoods is exposed outside to cause the overflow of peculiar smell is avoided. Meanwhile, the rising path of the oil smoke can be changed based on the control of the rotation angle of the first smoke collecting cover and the second smoke collecting cover, and the oil smoke absorption effect is greatly improved.

In addition, the range hood provided by the invention has the advantages that the cleaning assembly can extend into the joint of the two fume collecting hoods, so that a cleaning medium of the cleaning assembly can form a circulating loop in the two fume collecting hoods, the connecting hood and the fan hood, the cleaning medium is fully utilized, and the oil stain cleaning work can be completed under the condition of saving a large amount of cleaning resources.

Drawings

Fig. 1 is a perspective view of a range hood according to an embodiment of the present invention in a lampblack suction operation state.

Fig. 2 is an exploded perspective view of fig. 1.

Fig. 3 is a rear perspective view of fig. 2.

Fig. 4 is an internal structure view of the first smoke collecting hood, the second smoke collecting hood and the connecting hood in the embodiment of the invention.

Fig. 5 is a perspective view of the range hood in the working state of the non-working state or the cleaning state in the embodiment of the present invention.

FIG. 6 is a view showing the cleaning assembly removed from the connecting cover according to the embodiment of the present invention.

Fig. 7 is a cross-sectional view of fig. 4.

Fig. 8 is an exploded view of the cleaning assembly of the embodiment of the present invention in cooperation with the screens of the first and second fume collection hoods.

Fig. 9 is another sectional view of fig. 4.

Fig. 10 is an operating state diagram of the first smoke collecting hood and the second smoke collecting hood in the embodiment of the invention.

Fig. 11 is another operating state diagram of the first smoke collecting hood and the second smoke collecting hood in the embodiment of the invention.

Fig. 12 is a further operating state diagram of the first smoke collecting hood and the second smoke collecting hood in the embodiment of the invention.

FIG. 13 is a diagram illustrating the circulation path of the steam during the cleaning operation according to the embodiment of the present invention.

Detailed Description

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

As shown in fig. 1 to 9, the range hood in the present embodiment includes a fan housing 1, a fan 2, a connecting housing 3, a first smoke collecting hood 4, and a second smoke collecting hood 5.

Wherein the fan 2 is arranged inside the fan guard 1. Connecting cover 3 is fixed to be set up in the below of fan casing 1, and first collection petticoat pipe 4, second collection petticoat pipe 5 then can open and shut relatively and rotate to be connected on connecting cover 3, and connecting cover 3 is linked together with first collection petticoat pipe 4, second collection petticoat pipe 5, fan casing 1 respectively. Make things convenient for the rotation of first collection petticoat pipe 4, second collection petticoat pipe 5 to connect through connecting cover 3, also conveniently realize the intercommunication of first collection petticoat pipe 4, second collection petticoat pipe 5 and fan casing 1 simultaneously.

Usually, two burners are distributed left and right on the stove, and the corresponding first smoke collecting hood 4 and second smoke collecting hood 5 are distributed along the left and right direction, specifically, the first smoke collecting hood 4 is arranged on the left side, and the second smoke collecting hood 5 is arranged on the right side. The first smoke collecting hood 4 and the second smoke collecting hood 5 can swing along the front-back direction to be folded, and the first smoke collecting hood 4 and the second smoke collecting hood 5 can also swing along the up-down direction to be folded.

The first smoke collecting hood 4 and the second smoke collecting hood 5 respectively comprise a hood casing 400 with an opening and a filter screen 500 covered on the opening, the filter screen 500 forms an air inlet of the first smoke collecting hood 4 and the second smoke collecting hood 5, a smoke collecting channel is formed in a space enclosed by the hood casing 400 and the filter screen 500, and under the condition that the first smoke collecting hood 4 and the second smoke collecting hood 5 are relatively opened, under the action of the fan 2, oil smoke can enter the first smoke collecting hood 4 and the second smoke collecting hood 5 through the filter screen 500 and then enter the fan hood 1 through the space in the connecting hood 3. When the first smoke collecting hood 4 and the second smoke collecting hood 5 are aligned, the filter screens 500 in the first smoke collecting hood 4 and the second smoke collecting hood 5 are opposite, namely, the air inlets of the first smoke collecting hood 4 and the second smoke collecting hood 5 are relatively closed.

In this embodiment, the filter screens 500 in the first smoke collecting hood 4 and the second smoke collecting hood 5 are vertically arranged strip gratings, and the strip gratings of the filter screens in the first smoke collecting hood 4 and the second smoke collecting hood 5 are arranged in a staggered manner, so that when the first smoke collecting hood 4 and the second smoke collecting hood 5 are aligned, the strip gratings on the opposite filter screen portions of the first smoke collecting hood 4 and the second smoke collecting hood 5 are sealed in a staggered manner, the sealing performance of the first smoke collecting hood 4 and the second smoke collecting hood 5 after being aligned is further improved, and oil stain and odor is prevented from overflowing.

In this embodiment, the connection cover 3 is provided at the rear portion below the fan cover 1, and the top of the connection cover 3 is open and communicates with the fan cover 1. The first fume collecting hood 4 and the second fume collecting hood 5 are arranged and distributed in front of the connecting hood 3 along the left-right direction, and the first fume collecting hood 4 and the second fume collecting hood 5 can be connected to the upper part of the connecting hood 3 in a vertically swinging mode. Beautifully, the height of fan casing 1 on the vertical direction is equivalent to the height when first collection petticoat pipe 4, second collection petticoat pipe 5 swing downwards and are the involution state.

First collection petticoat pipe 4, second collection petticoat pipe 5 all have the rotation portion 100 of rotation connection on connecting cover 3, and the axis of rotation portion 100 extends along fore-and-aft direction, and first collection petticoat pipe 4, second collection petticoat pipe 5 then realize through rotation portion 100 that first collection petticoat pipe 4, second collection petticoat pipe 5 rotate on connecting cover 3 and connect. In the present embodiment, the rotating portions 100 of the first and second fume collecting hoods 4 and 5 are a part of the housing 400 thereof. The rotating part 100 of the first smoke collecting hood 4 is located on the right side, the rotating part 100 of the second smoke collecting hood 5 is located on the left side, the rotating parts 100 of the first smoke collecting hood 4 and the second smoke collecting hood 5 are almost attached together, and then the first smoke collecting hood 4 and the second smoke collecting hood 5 can be enabled to rotate downwards to form a folding state. The rotating part 100 is provided with a passage for communicating the connecting cover 3 therein, that is, the passage in the rotating part 100 is used as a communicating passage for the space inside the first smoke collecting hood 4 and the second smoke collecting hood 5 and the space inside the connecting cover 3.

The specific connecting structure of the first smoke collecting cover 4 and the second smoke collecting cover 5 on the connecting cover 3 is as follows: a connecting plate 31 extending forwards in the connecting cover 3, the connecting plate 31 divides the flowing space of the oil smoke into a left part and a right part in the connecting cover 31, and smoke inlets 32 are respectively arranged on the left side and the right side of the connecting plate 31 on the front side surface of the connecting cover 3. The rotating parts 100 of the first smoke collecting hood 4 and the second smoke collecting hood 5 are both in a cylindrical shape, the front end of the rotating part 100 is covered with a front end plate 101, the rear end of the rotating part 100 is opened and communicated with the connecting hood 3, the rear end of the rotating part 100 is provided with an embedded part 102 which is rotatably embedded in the smoke inlet 32, and the rotating support of the rear end of the rotating part 100 on the connecting hood 3 is realized through the embedded part 102. The front end of the connecting plate 31 is respectively provided with a fixing plate 311 bent to the front of the rotating part 100 of the first smoke collecting hood 4 and the second smoke collecting hood 5, a supporting column 312 is fixedly arranged on the fixing plate 311, the rotating parts 100 of the first smoke collecting hood 4 and the second smoke collecting hood 5 are both fixedly provided with a first motor 200, a rotating shaft of the first motor 200 is connected with the supporting column 312, and the rotating support of the front end of the rotating part 100 on the fixing plate 311 is realized through the supporting column 312. When first collection petticoat pipe 4, the second collection petticoat pipe 5 of needs drive rotate, then the control corresponds the work of first motor 200 in the collection petticoat pipe rotation portion 100, and first motor 200's pivot rotates, because support column 312 is fixed and unable rotation, and then makes the collection petticoat pipe that corresponds rotate along with first motor 200, so realize the luffing motion of first collection petticoat pipe 4, second collection petticoat pipe 5.

In addition, this range hood still is provided with cleaning assembly 6 and carries out the self-cleaning of range hood inside greasy dirt, and the cleaning medium of cleaning assembly 6 in this embodiment adopts steam, so makes things convenient for steam to remove the washing. Clean subassembly 6 sets up in connecting cover 3 to can carry out the back-and-forth movement action for connecting cover 3 through actuating mechanism 7 in connecting cover 3, make clean subassembly 6 can get into the position of closing between them when first collection petticoat pipe 4, second collection petticoat pipe 5 closes, and then based on first collection petticoat pipe 4, second collection petticoat pipe 5 and connecting cover 3, the intercommunication relation between the fan casing 1, the realization is to first collection petticoat pipe 4, second collection petticoat pipe 5 and connecting cover 3, the washing of the inside greasy dirt of fan casing 1.

The first smoke collecting hood 4 and the second smoke collecting hood 5 can enter the involution position of the first smoke collecting hood 4 and the second smoke collecting hood 5 under the involution state conveniently, and the involution state of the first smoke collecting hood 4 and the second smoke collecting hood 5 is not influenced. In this embodiment, the accommodating chamber 300 is formed at the closing position after the first smoke collecting hood 4 and the second smoke collecting hood 5 are closed, because the connecting hood 3 is disposed at the rear portion of the first smoke collecting hood 4 and the second smoke collecting hood 5, the accommodating chamber 300 is located at the rear portion of the closing position of the first smoke collecting hood 4 and the second smoke collecting hood 5, and the accommodating chamber 300 is opened toward the connecting hood 3, so that the cleaning assembly 6 can conveniently extend out of the connecting hood 3 and then enter the accommodating chamber 300.

The involution face of first collection petticoat pipe 4, second collection petticoat pipe 5 is its filter screen 500 face, and the side of corresponding holding chamber 300 is first collection petticoat pipe 4, the filter screen 500 face of second collection petticoat pipe 5 promptly, and the steam that so clean 6 during operations produced can enter into the connecting cover 3 through first collection petticoat pipe 4, the filter screen 500 of second collection petticoat pipe 5 in, and then in entering into fan guard 1, and then carries out the washing in the inside total space of range hood.

Based on the structure that the first fume collecting hood 4 and the second fume collecting hood 5 each include the housing 400 having the opening and the filter screen 500 covering the opening, in the present embodiment, the depressed area 501 is provided on the filter screen 500 of the first fume collecting hood 4 and/or the second fume collecting hood 5, and the depressed area 501 of the first fume collecting hood 4 and/or the second fume collecting hood 5 forms the aforementioned accommodating chamber 300 after the first fume collecting hood 4 and the second fume collecting hood 5 are folded. Specifically, the filter screens 500 of the first fume collecting hood 4 and the second fume collecting hood 5 are arranged in a step-shaped bending manner to form a depressed area 501. In this embodiment, the rear wall surfaces of the first smoke collecting hood 4 and the second smoke collecting hood 5 are attached to the front wall of the connecting hood 3, so that even if the first smoke collecting hood 4 and the second smoke collecting hood 5 are folded to form the accommodating chamber 300, the accommodating chamber 300 is also covered by the connecting hood 3, and the condition that the oil stain and the odor are excessive cannot occur.

The cleaning component 6 is arranged in the connecting cover 3, in order to avoid the pollution of the oil smoke entering the connecting cover 3 to the cleaning component 6, in the embodiment, an installation space 33 independent of the oil smoke passing channel is arranged in the connecting cover 3, the cleaning component 6 is arranged in the installation space 33, in the embodiment, the installation space 33 is positioned at the lower part of the connecting cover 3, namely, a partition plate is arranged in the connecting cover 3, and further, the installation space 33 is formed by the lower space of the connecting cover 3 through the isolation of the partition plate, and a flow channel for the oil smoke to pass through is formed by the upper space of the connecting cover 3.

The cleaning assembly 6 in this embodiment comprises a water tank 61, a heating pipe 63, a fan 64, and a nozzle 65. The water tank 61 is connected to the water tank 61 through a connection pipe 62, and a water pump may be provided to the connection pipe 62 in order to realize automatic water supply. The fan 64 can be moved forward by the driving of the driving mechanism 7 into the aforementioned accommodation chamber 300, or retracted into the installation space 33 of the connection cover 3 upon the driving of the driving mechanism 7. The drive mechanism 7 in this embodiment is also installed in the installation space 33 of the connection cover 3 to avoid oil smoke contamination. The outlet of the heating tube 63 extends into a nozzle 65 within the fan 64. When the washing operation is performed, the driving mechanism 7 drives the fan 64 to the accommodating chamber 300 formed by the first smoke collecting hood 4 and the second smoke collecting hood 5 in a matching manner. The water in the water tank 61 is introduced into the heating pipe 63 through the connecting pipe 62, the heating pipe 63 heats the water to a high temperature state, and then the water is sprayed out through the vaporization nozzle 65, and the water is sprayed out through the nozzle 65 to be high temperature steam. Control fan 64 work, high temperature steam is at two collection petticoat pipes under fan 64's effect, connect cover 3, fan cover 1 and form circulation loop in the circulation flow, and then continuously carry out the cleaning work of greasy dirt, because steam can circulation flow, consequently can solve a large amount of cleaning solutions and water.

The driving mechanism 7 comprises a second motor 71 and a gear 72 connected to the driving end of the second motor 71, and the cleaning assembly 6 is provided with a rack 73 engaged with the gear 72. In this embodiment, the rack 73 is fixed at the bottom of the fan 64, and when the fan is used, the second motor 71 rotates forward and backward to drive the gear 72 to rotate forward and backward, so that the fan 64 is driven forward and backward based on the meshing transmission of the gear 72 and the rack 73.

The working method of the range hood comprises the following steps.

When the range hood starts to work, the first smoke collecting hood 4 and the second smoke collecting hood 5 are controlled to be opened relatively, so that under the action of the fan 2, the oil smoke below the range hood can be sucked into a public flue through the first smoke collecting hood 4/the second smoke collecting hood 5, the connecting hood 3 and the fan hood 1, and the oil smoke sucking work is realized. After range hood stop work, control first collection petticoat pipe 4, second collection petticoat pipe 5 are closed relatively, so first collection petticoat pipe 4, second collection petticoat pipe 5 are to closing closed state, and first collection petticoat pipe 4, second collection petticoat pipe 5's filter screen 500 hides on the one hand for the product appearance is cleaner, clean and tidy pleasing to the eye, and the greasy dirt peculiar smell on collection petticoat pipe, connection cover 3, fan cover 1, fan 2 can't expand outward to the kitchen in simultaneously, improves user experience.

In addition, when the range hood works, the opening angles of the first smoke collecting hood 4 and the second smoke collecting hood 5 relative to the involution surface are adjusted based on the smoke concentrations at the left side and the right side of the lower part. The smoke concentration detection of the left side and the right side below the range hood can be realized by utilizing the existing technical means, and when the smoke concentration of one side is larger, the opening angle of the corresponding smoke collecting hood relative to the involution surface is larger.

In this embodiment, as shown in fig. 10, when the left/right cookers below the range hood cook simultaneously and the oil smoke amount is close, the first smoke collecting hood 4 and the second smoke collecting hood 5 are controlled to turn over to the horizontal state, and at this time, the area of the cage is the largest, so as to ensure the effect of sucking the oil smoke.

As shown in fig. 11, when the left side rice steaming and the right side stir-frying are performed, that is, the left side smoke concentration is lower than the right side smoke concentration, the angle of the left side smoke collecting hood (the first smoke collecting hood 4) turning relative to the mating surface is controlled to be smaller than the angle of the right side smoke collecting hood (the second smoke collecting hood 5) turning relative to the mating surface, in this embodiment, the left side smoke collecting hood (the first smoke collecting hood 4) is inclined relative to the horizontal surface, and the right side smoke collecting hood (the second smoke collecting hood 5) is turned to the horizontal surface. At this moment, the inlet flow of left side collection petticoat pipe (first collection petticoat pipe 4) air intake is become the upper left air inlet of side direction from lower to upper because left collection petticoat pipe is the tilt state, though left cage cigarette area reduces, and the vertical decurrent projected area of left side air intake reduces promptly, nevertheless because the air intake position of left side collection petticoat pipe moves down, smokes in lower position promptly, and its left side smoking effect still can be guaranteed when the oil smoke volume is not big. And the right-side stove is exploded to produce a large amount of oil smoke, the right-side smoke collecting cover is overturned to the horizontal position to realize the largest area of right-side cage smoke, the air inlet direction of the left-side smoke collecting cover is inclined upwards leftwards, the right-side oil smoke is deflected to the left side by the air inlet flow, the change of an oil smoke path is realized, the phenomenon that the right-side oil smoke escapes is reduced, and the smoke absorbing effect is improved.

As shown in fig. 12, when the left cooker is not cooking and the right cooker is cooking to generate a large amount of oil smoke, the left smoke collecting hood (the first smoke collecting hood 4) is vertically downward, the right smoke collecting hood (the second smoke collecting hood 5) is turned to be horizontal, at this time, the air inlet of the left smoke collecting hood is turned to be lowest and is close to a cooking appliance placed on the right cooker, oil smoke generated by cooking of the right cooker is partially sucked away by the left smoke collecting hood in a rising stage, and is partially sucked away by the right smoke collecting hood in a diffusion stage, and the oil smoke path is also deflected to prevent the oil smoke from escaping to the right side.

So, based on the difference of the flue gas concentration of range hood below both sides, through the regulation to first collection petticoat pipe 4, second collection petticoat pipe 5 opening angle, more do benefit to the oil smoke suction on the one hand, on the other hand can avoid the oil smoke to escape.

As shown in fig. 13, when the range hood needs to perform self-cleaning, the first smoke collecting hood 4 and the second smoke collecting hood 5 are controlled to be in a relatively closed state; the cleaning assembly 6 is controlled to move into the accommodating cavity 300 formed by the first smoke collecting hood 4 and the second smoke collecting hood 5 which are combined together, and then the cleaning assembly 6 is controlled to work to generate cleaning steam, so that the cleaning steam circularly flows in the circulating path. The circulation path is a path formed by the space in the first smoke collecting hood 4, the left air duct of the connecting hood 3, the fan hood 1, the right air duct of the connecting hood 3, and the second smoke collecting hood 5. Based on the direction of rotation of the fan 64, it is determined whether the water vapor flows clockwise or counterclockwise within the circulation path. Cleaning steam can flow at the circulation path inner loop under fan 64's effect, last to two collection petticoat pipes, connect cover 3, fan cover 1, fan 2 oil dirt and carry out cleaning work, not only can guarantee the cleaning performance, can also be in the street cleaning solution and water resource greatly.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the invention, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

The term "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 conduit, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims (13)

1. The utility model provides a range hood, includes fan guard (1), sets up fan (2) in fan guard (1), its characterized in that: still including connecting cover (3), first collection petticoat pipe (4), second collection petticoat pipe (5) that set up fan cover (1) below, first collection petticoat pipe (4), second collection petticoat pipe (5) can rotate relatively and connect on connecting cover (3), connecting cover (3) are linked together with first collection petticoat pipe (4), second collection petticoat pipe (5), fan cover (1) respectively.

2. The range hood of claim 1, wherein: first collection petticoat pipe (4), second collection petticoat pipe (5) are arranged along left right direction and are distributed in the place ahead of connecting cover (3), first collection petticoat pipe (4), second collection petticoat pipe (5) all have rotation portion (100) of rotation connection on connecting cover (3), the axis of rotation portion (100) extends along the fore-and-aft direction, have in rotation portion (100) and be used for the passageway that the intercommunication connects cover (3).

3. The range hood of claim 2, wherein: the connecting cover (3) is internally provided with a connecting plate (31) which extends forwards, and the front side surface of the connecting cover (3) is also provided with smoke inlets (32) on two sides of the connecting plate (31) respectively;

the rotary parts (100) of the first smoke collecting hood (4) and the second smoke collecting hood (5) are both cylindrical, the front end of the rotary part (100) is covered with a front end plate (101), the rear end of the rotary part (100) is provided with an opening and communicated with the connecting hood (3), and the rear end of the rotary part (100) is provided with an embedded part (102) which is rotatably embedded into the smoke inlet (32);

the front end of connecting plate (31) is buckled to the place ahead of the rotation portion (100) of first collection petticoat pipe (4), second collection petticoat pipe (5) respectively and is provided with fixed plate (311), fixes on fixed plate (311) and is provided with support column (312), all fixed being equipped with first motor (200) in rotation portion (100) of first collection petticoat pipe (4), second collection petticoat pipe (5), the pivot of first motor (200) is connected with support column (312).

4. The range hood according to any one of claims 1 to 3, wherein: the first smoke collecting cover (4) and the second smoke collecting cover (5) are formed with an accommodating cavity (300) at the closing position after closing, and a cleaning assembly (6) capable of extending into the accommodating cavity (300) is arranged in the connecting cover (3).

5. The range hood of claim 4, wherein: first collection petticoat pipe (4), second collection petticoat pipe (5) all include casing (400) that have the open-ended and filter screen (500) of covering on the opening, be equipped with depressed area (501) on filter screen (500) of first collection petticoat pipe (4) and/or second collection petticoat pipe (5), depressed area (501) of first collection petticoat pipe (4) and/or second collection petticoat pipe (5) form after first collection petticoat pipe (4), second collection petticoat pipe (5) are to closing holding chamber (300).

6. The range hood of claim 5, wherein: the filter screens (500) of the first smoke collecting hood (4) and the second smoke collecting hood (5) are arranged in a step-shaped bending mode to form the depressed area (501).

7. The range hood of claim 4, wherein: an installation space (33) independent of the oil smoke passing channel is arranged in the connecting cover (3), and the cleaning assembly (6) is movably arranged in the installation space (33).

8. The range hood of claim 7, wherein: and a driving mechanism (7) for driving the cleaning assembly (6) to move is also arranged in the mounting space (33).

9. The range hood of claim 8, wherein: the driving mechanism (7) comprises a second motor (71) and a gear (72) connected to the driving end of the second motor (71), and a rack (73) meshed with the gear (72) is arranged on the cleaning assembly (6).

10. The range hood of claim 4, wherein: the cleaning component (6) comprises a water tank (61), a heating pipe (63) connected with the water tank (61) through a connecting pipe (62), a fan (64) capable of extending into the accommodating cavity (300), and a nozzle (65) arranged at an outlet of the heating pipe (63) and extending into the fan (64).

11. The working method of the range hood is characterized in that: the range hood is as claimed in any one of claims 1 to 10;

when the range hood is started to work, the first smoke collecting hood (4) and the second smoke collecting hood (5) are controlled to be opened relatively;

after the range hood stops working, the first smoke collecting hood (4) and the second smoke collecting hood (5) are controlled to be closed relatively.

12. The working method of the range hood is characterized in that: the range hood is as claimed in any one of claims 2 to 10;

when the range hood works, the opening angles of the first smoke collecting hood (4) and the second smoke collecting hood (5) relative to the involution surface are adjusted based on the smoke concentration of the left side and the right side of the lower part.

13. The working method of the range hood is characterized in that: the range hood is according to any one of claims 4 to 10, the cleaning assembly (6) is a steam cleaning device;

when the range hood needs to carry out self-cleaning, the first smoke collecting hood (4) and the second smoke collecting hood (5) are controlled to be in a relatively closed state; controlling and driving the cleaning assembly (6) to move into an accommodating cavity (300) formed by the first smoke collecting hood (4) and the second smoke collecting hood (5) after being closed, and then controlling the cleaning assembly (6) to work to generate cleaning steam so that the cleaning steam circularly flows in a circulating path;

the circulation path is the path that first collection petticoat pipe (4), the left side wind channel of connecting cover (3), fan cover (1), the right side wind channel of connecting cover (3), second collection petticoat pipe (5) inner space formed.

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