CN216693659U - Accelerated smoke suction device and range hood thereof - Google Patents

Abstract

The utility model discloses an accelerating smoke suction device and a range hood thereof, wherein the device comprises: the annular air passage is provided with an upward or obliquely upward air nozzle, and the air outlet direction of the air nozzle faces the flow guide surface; and the air supply part is used for providing an air source for the air inlet. The accelerated smoking device has a simple and ingenious structure, adopts a jet flow active guiding mode, is beneficial to further accelerating the oil smoke suction, prevents the oil smoke from escaping, and greatly improves the smoking effect under the condition of instant large smoke volume.

Description

Accelerated smoke suction device and range hood thereof

Technical Field

The utility model relates to the technical field of range hoods, in particular to an accelerated smoke suction device and a range hood thereof.

Background

The existing high-performance range hood can completely meet the use requirements aiming at most of use conditions. The excessive condition of oil smoke mainly takes place when producing a large amount of oil smoke suddenly, behind the oil smoke striking collection petticoat pipe that rises at a high speed or keep off the cigarette board, because the suction velocity of smoking mouth is not enough, can't get into range hood with its suction fast inside to spill over to two kitchen range outside limits, lead to the user to use to experience relatively poor.

In addition, the oil net is designed at the position of the smoke suction opening, when oil smoke is sucked, the oil smoke collides with the oil net, small local vortexes can be generated, the oil smoke is influenced to be smoothly sucked, the speed is relatively low when the oil smoke is sucked, and a large amount of instantaneous oil smoke is easy to overflow.

Disclosure of Invention

The utility model aims to solve one of the problems in the prior related art at least to a certain extent, and therefore the utility model provides an accelerated smoking device which is simple and ingenious in structure, adopts a jet flow active guiding mode, is beneficial to further accelerating the smoking of oil smoke, prevents the oil smoke from escaping and greatly improves the smoking effect under the condition of instantaneous large smoke volume.

The utility model also provides a range hood with the accelerated smoking device, and the flow guider of the accelerated smoking device is arranged at the smoke inlet, so that the oil smoke is further accelerated to be sucked into the smoke collecting hood in a jet flow active guiding mode, the air inlet is ensured to be smoother, and the instantaneous smoking effect is obviously improved.

According to the above-mentioned accelerated smoking device that provides, it realizes through following technical scheme:

an accelerated smoking device comprising: the annular air passage is provided with an upward or obliquely upward air nozzle, and the air outlet direction of the air nozzle faces the flow guide surface; and the air supply part is used for providing an air source for the air inlet.

In some embodiments, the flow director comprises: the air inlet is arranged at the top of the shell, the outer side wall of the shell is the flow guide surface, and a plurality of air outlet seams communicated with the air cavity are circumferentially arranged at intervals at the lower end of the flow guide surface; the diffusion ring, the diffusion ring is including bottom plate and the curb plate that is connected, the bottom plate butt is connected the bottom of casing, the curb plate set up in the periphery of water conservancy diversion face the curb plate with be formed with between the water conservancy diversion face annular air flue, annular air flue intercommunication every go out the gas gap.

In some embodiments, the base plate is a circular flat plate, or the base plate is an annular flat plate having a central hole; the side plate is parallel to the flow guide surface.

In some embodiments, the flow director comprises: the diffuser ring is provided with a concave cavity which is opened upwards; the casing, the casing has open-ended cavity down the casing top is equipped with the intercommunication the cavity the air intake, the lateral wall of casing does the water conservancy diversion face the lower extreme circumference interval of water conservancy diversion face is equipped with a plurality of gas seams, the casing is inserted and is located in the cavity and the butt the bottom of cavity, the air cavity by the cavity with the bottom of cavity encloses jointly and closes and form the lateral wall of cavity with be formed with between the water conservancy diversion face annular air flue, annular air flue passes through the gas seam intercommunication of giving vent to anger the air cavity.

In some embodiments, the side walls of the cavity are parallel to the flow-directing surface.

In some embodiments, the air chamber is a hollow cylindrical shell, the air inlet is formed in the top of the shell, the outer side wall of the shell is the flow guide surface, an annular flange extending upwards is integrally formed at the lower end of the flow guide surface, the annular air passage is formed between the annular flange and the flow guide surface, a plurality of air outlet slits are circumferentially arranged at the lower end of the flow guide surface at intervals, and two opposite ends of each air outlet slit are respectively communicated with the air chamber and the annular air passage.

In some embodiments, the air supply device further comprises an adapter with an air duct, the air supply member is an air curtain fan, and an air supply outlet of the air curtain fan is communicated with the air inlet through the air duct.

In some embodiments, the adaptor is disposed above the flow guider, one end of the adaptor is provided with a mounting cavity suitable for mounting the air curtain fan, the other end of the adaptor is provided with a mounting port extending towards the air inlet, the air curtain fan is mounted in the mounting cavity, an inlet of the air duct is communicated with the air supply port, and an outlet of the air duct is connected with the air inlet through the mounting port.

In some embodiments, the air supply device further comprises an adapter with an air duct, the air supply part is a smoke machine fan, an air outlet is arranged at the air outlet end of the smoke machine fan, and the air outlet is selectively communicated with the air inlet through the air duct.

In some embodiments, a switch valve is arranged between the air duct and the air outlet, or a switch valve is arranged in the air duct.

According to the range hood that provides above-mentioned, it realizes through following technical scheme: a range hood, comprising: the bottom of the smoke collecting cover is provided with at least one smoke inlet, and the edge of the smoke inlet is circumferentially provided with a folded edge extending towards the interior of the smoke collecting cover; the air cabinet assembly comprises a box body and a volute fan, the box body is arranged at the top of the fume collecting hood and communicated with the interior of the fume collecting hood, and the volute fan is arranged in the box body; according to the accelerated smoking device, the accelerated smoking devices with the smoke inlets in the number opposite to that of the smoke inlets are connected in the smoke collecting hood, each fluid director extends into the corresponding folded edge, an annular smoking channel for oil smoke to pass through is formed between the folded edge and the fluid director, and the annular smoking channel is respectively connected with the air jet, the inside of the smoke collecting hood and the outside of the smoke collecting hood.

In some embodiments, the smoke collecting hood further comprises a fixing piece arranged in the smoke collecting hood, the top of each flow guider is provided with one fixing piece, the fixing pieces are respectively connected and correspond to the tops of the flow deflectors and the upper ends of the folded edges, a ventilation portion for airflow to pass through is arranged at the position, corresponding to the annular smoke sucking channel, of each fixing piece, and the inside of the smoke collecting hood is communicated with the annular smoke sucking channel through the ventilation portion.

Compared with the prior art, the utility model at least comprises the following beneficial effects:

the accelerated smoking device has the advantages that the outer side wall of the fluid director with the air cavity is designed into the flow guide surface, the annular air passage communicated with the air cavity is additionally arranged on the periphery of the flow guide surface, the annular air passage is provided with the upward or obliquely upward air jet, air flow jetted from the air jet can attach to the flow guide surface of the fluid director and flow upwards to form an air curtain, the structure is simple and ingenious, the jet flow active guiding mode is adopted, oil smoke on the periphery of the fluid director is further accelerated and smoothly sucked into the smoke collecting hood, and the smoking effect under the condition of instant large oil smoke volume is greatly improved.

Drawings

FIG. 1 is an exploded view of an accelerated smoking device in accordance with example 1 of the present invention;

FIG. 2 is a cross-sectional view of an accelerated smoking device in accordance with example 1 of the present invention;

fig. 3 is an exploded view of a first deflector in embodiment 1 of the present invention;

fig. 4 is a sectional view of a second fluid director in embodiment 1 of the present invention;

fig. 5 is a sectional view of a third fluid director in embodiment 1 of the present invention;

FIG. 6 is a schematic structural view of a blower of a cigarette machine in embodiment 1 of the present invention;

fig. 7 is a schematic structural diagram of a range hood in embodiment 2 of the present invention;

fig. 8 is a sectional view of the range hood in embodiment 2 of the present invention, in which an air cabinet assembly is hidden;

fig. 9 is another angle sectional view of the range hood in embodiment 2 of the present invention, in which the hood assembly is hidden.

In the figure: 1-a fluid director, 101-an air cavity, 102-an air inlet, 103-a flow guiding surface, 104-an annular air passage, 11-a shell, 112-an air outlet seam, a bottom surface 113, 12-a diffuser ring, 1201-a cavity, 121-a bottom plate and 122-a side plate;

2-air curtain fan, 201-air supply outlet;

3-a smoke machine fan 301-an air outlet hole 302-an air outlet, 31-a volute, 32-a motor and 33-an impeller;

4-adaptor, 401-air duct, 402-installation cavity, 403-installation port;

5-a smoke collecting hood, 501-a hem, 502-an annular smoking channel, 503-an air inlet part and 504-a smoke inlet surface;

6-wind cabinet component, 61-box body;

7-fixing part, 701-venting part.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications of the embodiments of the utility model, or equivalent substitutions for parts of technical features without departing from the spirit of the utility model, should be included in the scope of the claims of the utility model.

Example 1

Referring to fig. 1-3, the present embodiment provides an accelerated smoking device, which comprises a flow guider 1 and an air supply member (not shown in the figure) for providing an air source, wherein the flow guider 1 has an air cavity 101 therein, and an air inlet 102 communicating with the air cavity 101 is formed at the top of the flow guider 1. The outer side wall of the fluid director 1 is a flow guide surface 103 which is obliquely arranged from bottom to top and inwards, and in the embodiment, the flow guide surface 103 is conical or truncated cone-shaped. An annular air passage 104 is arranged at the periphery of the flow guide surface 103, the annular air passage 104 is communicated with the air cavity 101, and the annular air passage 104 is provided with an upward or obliquely upward air nozzle (not shown in the figure), and the air outlet direction of the air nozzle faces the flow guide surface 103.

When the air supply part works, the air supply part provides an air source for the air inlet 102, and air flow enters the annular air passage 104 along the air inlet 102 and the air cavity 101 and is finally ejected upwards or obliquely upwards from an air outlet of the annular air passage 104. Due to the wall attachment effect, the airflow ejected from the air jet can attach to the flow guide surface 103 of the fluid director 1 and flow upwards to form an air curtain flowing upwards along the flow guide surface 103, so that the airflow is prevented from disorderly flowing out of the fluid director 1, and the upwards flowing air curtain can better and actively guide the oil smoke to be further accelerated and upwards sucked into the smoke collecting hood of the range hood, thereby preventing the oil smoke from escaping.

It can be seen that, in the accelerated smoking device of this embodiment, the outer side wall of the fluid director 1 having the air cavity 101 is designed as the flow guide surface 103, the annular air passage 104 communicating with the air cavity 101 is additionally arranged at the periphery of the flow guide surface 103, the annular air passage 104 has an upward or obliquely upward air jet, and the air flow jetted from the air jet can attach to the flow guide surface 103 of the fluid director 1 and flow upward to form an air curtain.

In the present embodiment, the width of the annular air passage 104 is designed to be about 3mm, so that the annular air passage 104 is narrow, which not only can accelerate the air flow velocity, but also can restrict the air flow from flowing upwards along the orientation of the annular air passage 104 and then upwards along the diversion surface 103, thereby ensuring that the air flow does not jump out of the fluid director 1 in an disordered manner.

Referring to fig. 2-3, in the present embodiment, the fluid director 1 includes a housing 11 having an air cavity 101 and a diffuser ring 12, an air inlet 102 is provided at the top of the housing 11, and the outer side wall of the housing 11 is designed as a flow guiding surface 103, that is, the outer side wall of the housing 11 is designed as a circular truncated cone. A plurality of air outlet slits 112 are uniformly distributed at intervals in the circumferential direction at the lower end part of the flow guide surface 103, and each air outlet slit 112 is communicated with the air cavity 101 so as to improve the air distribution uniformity. The housing 11 has a bottom surface 113 that enables the housing 11 to form the air cavity 101 without the need for the diffuser ring 12.

The diffuser ring 12 includes a bottom plate 121 and a side plate 122, the bottom plate 121 is a circular flat plate without a central hole, the side plate 122 is an annular structure, the side plate 122 is disposed at the periphery of the bottom plate 121, and the edge of the bottom plate 121 is connected to the lower edge of the side plate 122 and defines a cavity 1201 which is open upward. Optionally, the side plate 122 of the present embodiment is parallel to the flow guiding surface 103, so as to better guide the airflow to flow upward.

During installation, the housing 11 is inserted into the cavity 1201 and abuts against and is connected to the bottom of the cavity 1201, that is, the bottom surface 113 of the housing 11 abuts against and is connected to the bottom plate 121. The side plate 122 is located at the periphery of the flow guide surface 103, an annular air passage 104 is formed between the side plate 122 and the flow guide surface 103, that is, the radial outer side of the side plate 122, the radial outer side of the bottom plate 121 and the lower end of the flow guide surface 103 jointly enclose to form the annular air passage 104 with an open top, the annular air passage 104 is communicated with each air outlet slit 112, and the open top of the annular air passage 104 forms an air jet. Thus, by designing the deflector 1 to be composed of the housing 11 with the air cavity 101 and the diffuser ring 12 with the cavity 1201 opening upwards, the machining, assembly and rapid formation of the annular air duct 104 is facilitated.

In other embodiments, to reduce the manufacturing material and reduce the manufacturing cost, the bottom plate 121 may be designed as an annular flat plate with a central hole, and refer to fig. 4 specifically.

In other embodiments, the fluid director 1 may also be designed as follows:

in a first variant, referring to fig. 5, the fluid director 1 comprises a housing 11 and a diffuser ring 12, the housing 11 has a cavity (not shown) that is open downwards, i.e. the bottom of the cavity is open, and the housing 11 does not have a bottom surface 113. An air inlet 102 communicated with the cavity is arranged at the top of the shell 11, the outer side wall of the shell 11 is designed to be a flow guide surface 103, and a plurality of air outlet slits 112 are uniformly arranged at intervals in the circumferential direction at the lower end part of the flow guide surface 103. The diffuser ring 12 has a cavity 1201 that opens upwardly. During installation, the shell 11 is inserted into the cavity 1201 and is abutted against and connected with the bottom of the cavity 1201, the air cavity 101 is formed by enclosing the cavity and the bottom of the cavity 1201 together, an annular air passage 104 is formed between the side wall of the cavity 1201 and the flow guide surface 103, and the annular air passage 104 is communicated with the air cavity 101 through the air outlet gap 112. Therefore, by omitting the bottom of the housing 11, the air cavity 101 is designed to be formed by the cavity opened downwards of the housing 11 and the bottom of the cavity 1201 opened upwards of the diffuser ring 12, so that the processing and molding of the housing 11 are facilitated, the material used for the housing 11 is less, and the cost is lower.

Optionally, a plurality of gaps are uniformly distributed at the lower end of the flow guiding surface 103 along the circumferential direction, the length direction of the gaps is arranged along the circumferential direction, and the height of the gaps is designed to be shorter. The air outlet slit 112 is formed by the notch and the bottom of the cavity 1201, so that the area of the air outlet slit 112 is smaller and is closer to the bottom of the annular air duct 104.

In a second variant, the fluid director 1 is a housing 11 having an air cavity 101, an air inlet 102 is provided at the top of the housing 11, and the outer side wall of the housing 11 is designed as a flow guiding surface 103. An outward and upward extending annular flange is integrally formed at the lower end of the flow guide surface 103, and replaces the diffuser ring 12. An annular air passage 104 is formed between the annular flanging and the flow guide surface 103, a plurality of air outlet slits 112 are circumferentially and uniformly distributed at the position, corresponding to the annular air passage 104, of the lower end of the flow guide surface 103 at intervals, and two opposite ends of each air outlet slit 112 are respectively communicated with the air cavity 101 and the annular air passage 104. From this, through be equipped with the annular turn-ups that outwards just extends upwards along integrated into one piece at the lower extreme of water conservancy diversion face 103 to design annular air flue 104 and close by the lower extreme of annular turn-ups and water conservancy diversion face 103 and form, when realizing smoking effect with higher speed, saved diffuser ring 12, make the overall structure of divertor 1 simpler, the cost is lower.

In this embodiment, the air supply component may be an additional air curtain fan 2, or a range hood fan 3 configured for the range hood itself.

When the air supply member is preferably an additional air curtain fan 2, referring to fig. 1-2, the cigarette acceleration device further comprises an adapter 4 having an air duct 401, and an air supply opening 201 of the air curtain fan 2 is communicated with the air inlet 102 of the fluid director 1 through the air duct 401. Therefore, the air supply outlet 201 of the air curtain fan 2 is stably and reliably connected with the air inlet 102 of the fluid director 1 through the adapter 4 with the air channel 401, and a reliable air source is provided for the fluid director 1.

Specifically, the adapter 4 is disposed above the flow guider 1, and one end of the adapter is provided with an installation cavity 402 suitable for installing the air curtain fan 2, the top of the installation cavity 402 is provided with an opening, and the installation cavity 402 is communicated with the air duct 401. The other end of the adaptor 4 is provided with a mounting port 403 extending toward the intake vent 102. The air curtain fan 2 is installed in the installation cavity 402 and the air inlet end of the air curtain fan 2 faces the top opening of the installation cavity 402, so that the air curtain fan 2 can exhaust air, and the air supply outlet 201 of the air curtain fan 2 is communicated with the inlet of the air duct 401. The outlet of the air duct 401 is connected to the air inlet 102 through the mounting opening 403. Thus, by providing the mounting cavity 402 in the adaptor 4, a space for mounting the air curtain fan 2 is provided. In addition, the mounting opening 403 extending towards the air inlet 102 is additionally arranged at the other end of the adapter 4, so that the adapter 4 and the air inlet 102 are simpler and more convenient to disassemble and assemble, and the connection is firmer and more reliable.

When the air supply member is preferably a cigarette machine fan 3, referring to fig. 6, the cigarette machine fan 3 includes a volute 31, a motor 32 and an impeller 33, and the volute 31 has an air suction opening (not shown) and an air outlet 302. An impeller 33 is rotatably disposed within the volute 31 and connected to the output of the motor 32. An air outlet 301 is disposed near the air outlet 302 at the air outlet end of the volute 31, and the air outlet 301 is selectively communicated with the air inlet 102 through an air duct 401. Therefore, the smoke ventilator fan 3 is adopted to provide an air source for the fluid director 1, the utilization rate of the smoke ventilator fan 3 is improved, and meanwhile, the air curtain fan 2 does not need to be additionally arranged, so that the overall cost of the smoke ventilator is lower.

In addition, an on-off valve is provided between the air duct 401 and the air outlet 301, or an on-off valve is provided in the air duct 401. Therefore, the smoke machine fan 3 can be controlled to provide an air source for the fluid director 1 or not through the on-off control of the switch valve.

Example 2

Referring to fig. 7 to 9, the present embodiment provides a range hood including a smoke collecting hood 5, a fume hood assembly 6, and an accelerated smoking device as described in embodiment 1. The bottom of the fume collecting hood 5 is provided with at least one fume inlet (not shown in the figure), and in the embodiment, the bottom of the fume collecting hood 5 is provided with two fume inlets which are arranged side by side from left to right so as to realize double-cavity double suction. A folding edge 501 extending towards the inside of the smoke collecting cover 5 is arranged at the periphery of each smoke inlet. The wind cabinet assembly 6 comprises a box body 61 and a volute fan, the box body 61 is arranged at the top of the smoke collecting hood 5 and communicated with the inside of the smoke collecting hood 5, and the volute fan is a smoke machine fan without an air outlet 301 and is arranged in the box body 61.

Two accelerating smoking devices which are arranged in one-to-one correspondence with the smoke inlets are connected in the smoke collecting hood 5. Each fluid director 1 extends into the corresponding folding edge 501, an annular smoking channel 502 for oil smoke to pass through is formed between the folding edge 501 and the fluid director 1, and the annular smoking channel 502 is respectively connected with the air jet, the inside of the smoke collecting cover 5 and the outside of the smoke collecting cover 5. The adapter 4 of each accelerated smoking device is fixedly connected with the top of the smoke collecting hood 5, and an air inlet part 503 is arranged at the position, corresponding to the air inlet end of the air curtain fan 2, of the top of the smoke collecting hood 5, so that air outside the smoke machine can be sucked into the air curtain fan 2 through the air inlet part 503, and an air source is further provided for the fluid director 1.

When smoking is needed, the volute fan and the air curtain fan 2 close to the position where smoking is needed are started. The oil smoke is sucked into the smoke collecting cover 5 through the annular smoke sucking passage 502 by the suction force generated by the operation of the volute fan. Because the oil net structure is not arranged at the smoke inlet, the oil smoke can not collide with the oil net to generate small local vortex, thereby not influencing the smooth suction of the oil smoke, ensuring the smooth smoking and preventing a large amount of instantaneous oil smoke from easily overflowing. In the smoking process, the airflow ejected by the fluid director 1 flows upwards along the flow guide surface 103 of the fluid director 1 to form an air curtain, and the air curtain can drive the peripheral oil smoke to be further sucked into the smoke collecting hood 5 at an accelerated speed, so that the oil smoke is enabled to flow into the smoke collecting hood 5 at an accelerated speed in a jet flow active guide mode, the smoking effect under the condition of instantaneous large smoke volume is further improved, and the oil smoke is prevented from escaping.

In this embodiment, the folded edge 501 has a truncated cone shape, so that the folded edge 501 can better guide the oil smoke into the smoke collecting hood 5.

Referring to fig. 8-9, further, two fixing pieces 7 are included, and the two fixing pieces 7 are both arranged in the smoke collecting hood 5 and are arranged in one-to-one correspondence with the two smoke inlets. The top of each fluid director 1 is provided with a fixing piece 7, the fixing piece 7 is sleeved on the outer surface of the air inlet 102 of the corresponding fluid director 1, the fixing piece 7 is fixedly connected with the top of the fluid director 1, the edge of the fixing piece 7 is connected with the upper end of the corresponding folding edge 501, and therefore the fixing piece 7 is respectively connected with the folding edge 501 and the fluid director 1, and the fluid director 1 is more stably and reliably installed.

The fixing member 7 is provided with a ventilation portion 701 through which the air flow passes at a position corresponding to the annular smoking passage 502, and the ventilation portion 701 may be a circular oil filter or a strip oil filter, or may be a slit through which the air flow passes. In the embodiment, the ventilation part 701 is taken as a circular oil filter hole as an example, the inside of the exhaust fume collecting hood 5 is communicated with the annular smoking passage 502 through the ventilation part 701, so that oil fume is sucked into the annular smoking passage 502, cannot escape outwards all around under the wall surface limitation of the annular smoking passage 502, and only can flow upwards along the annular smoking passage 502, and is primarily filtered when flowing through the circular oil filter hole, so that the oil fume separation effect is improved, and then the oil fume is sucked into the exhaust fume collecting hood 5.

It can be seen that, through set up the mounting 7 that has portion of ventilating 701 in the collection petticoat pipe 5 inside, one can be used for strengthening the installation of divertor 1 more firm reliable, two realize carrying out preliminary filtration to the oil smoke, improve the oil smoke separation effect, three come the oil smoke and when mounting 7 bumps, even can produce less local vortex, because mounting 7 is located collection petticoat pipe 5 inside, under the wall restriction of annular smoking passageway 502, the excessive phenomenon can not appear instantaneously a large amount of oil smoke and take place easily.

Referring to fig. 7 to 8, in the present embodiment, the smoke intake surface 504 of the smoke collecting hood 5 is arranged obliquely in the vertical direction so that the smoke intake surface 504 can function as a smoke guide. The top surface of mounting 7 designs for being on a parallel with into smoke face 504 to make the top surface of mounting 7 also be the slope and arrange, like this, the oil smoke condensation produces the greasy dirt when flowing through the portion 701 of ventilating of mounting 7 top surface, and the greasy dirt flows down along mounting 7 top surface under the action of gravity, then flows to the bottom inboard of collection petticoat pipe 5 along hem 501 downstream, finally collects the oil cup the inside of range hood from the oil flow hole of collection petticoat pipe 5 bottom. Therefore, the top surface of the fixing part 7 and the smoke-back surface of the folded edge 501 can both play a role in guiding oil stains, and the oil stains on the top surface of the fixing part 7 are prevented from directly dropping to the cooking bench through penetrating into the smoke outlet.

Example 3

The present embodiment is different from the present embodiment 2 in that the volute blower is changed to a smoke machine blower 3 having an air outlet 301, refer to fig. 6. Correspondingly, the mounting cavities 402 on the two air curtain fans 2 and the adapter 4 are omitted. The left side wall and the right side wall of the air outlet end of the smoke machine fan 3 are respectively provided with an air outlet 301, the air outlet 301 near the left side is communicated with the air inlet 102 near the left fluid director 1 through an air duct 401 of a first adapter 4, and the air outlet 301 near the right side is communicated with the air inlet 102 near the right fluid director 1 through an air duct 401 of a second adapter 4.

A switch valve is arranged between each air duct 401 and the corresponding air outlet 301, or a switch valve is arranged in each air duct 401, so that whether the fan 3 of the range hood provides an air source for the two fluid directors 1 or not is controlled by controlling the switch of the switch valve.

It can be seen that, in the embodiment, the smoke ventilator fan 3 is adopted to provide an air source for the fluid director 1, so that not only is the utilization rate of the smoke ventilator fan 3 improved, but also the additional arrangement of the air curtain fan 2 is not needed, and the overall cost of the range hood is lower.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the utility model.

Claims (12)

1. An accelerated smoking device, comprising:

the air guide device comprises a fluid director (1) with an air cavity (101) inside, wherein an air inlet (102) communicated with the air cavity (101) is formed in the fluid director (1), the outer side wall of the fluid director (1) is a flow guide surface (103) which is obliquely arranged from bottom to top and inwards, an annular air passage (104) communicated with the air cavity (101) is arranged on the periphery of the flow guide surface (103), the annular air passage (104) is provided with an upward or obliquely upward air jet, and the air outlet direction of the air jet faces the flow guide surface (103);

The air supply part is used for providing an air source for the air inlet (102).

2. Accelerated smoking device according to claim 1, wherein the flow director (1) comprises:

the air conditioner comprises a shell (11) with an air cavity (101), wherein the top of the shell (11) is provided with an air inlet (102), the outer side wall of the shell (11) is a flow guide surface (103), and a plurality of air outlet seams (112) communicated with the air cavity (101) are arranged at the lower end of the flow guide surface (103) at intervals in the circumferential direction;

diffuser ring (12), diffuser ring (12) are including bottom plate (121) and curb plate (122) that are connected, bottom plate (121) butt is connected the bottom of casing (11), curb plate (122) set up in the periphery of water conservancy diversion face (103) curb plate (122) with be formed with between water conservancy diversion face (103) annular air flue (104), annular air flue (104) communicate every go out gas gap (112).

3. An accelerated smoking device according to claim 2, wherein the base plate (121) is a circular flat plate, or the base plate (121) is an annular flat plate with a central hole; the side plate (122) is parallel to the flow guide surface (103).

4. Accelerated smoking device according to claim 1, wherein the flow director (1) comprises:

The diffuser ring (12), the diffuser ring (12) has a cavity (1201) which is opened upwards;

the air-conditioning unit comprises a shell (11), the shell (11) is provided with a cavity with a downward opening, the top of the shell (11) is provided with an air inlet (102) communicated with the cavity, the outer side wall of the shell (11) is a flow guide surface (103), a plurality of air outlet slits (112) are circumferentially arranged at intervals at the lower end of the flow guide surface (103),

the shell (11) is inserted into the cavity (1201) and abutted to the bottom of the cavity (1201), the air cavity (101) is formed by jointly enclosing the cavity and the bottom of the cavity (1201), the annular air passage (104) is formed between the side wall of the cavity (1201) and the flow guide surface (103), and the annular air passage (104) is communicated with the air cavity (101) through the air outlet seam (112).

5. An accelerated smoking device according to claim 4, wherein the side walls of the cavity are parallel to the deflector surface (103).

6. The accelerated smoking device of claim 1, wherein the flow director (1) is a housing (11) having the air cavity (101), the top of the housing (11) is provided with the air inlet (102), the outer side wall of the housing (11) is the flow guide surface (103), the lower end of the flow guide surface (103) is integrally provided with an annular flange extending outwards and upwards, the annular air passage (104) is formed between the annular flange and the flow guide surface (103), the lower end of the flow guide surface (103) is circumferentially provided with a plurality of air outlet slits (112) at intervals, and two opposite ends of each air outlet slit (112) are respectively communicated with the air cavity (101) and the annular air passage (104).

7. An accelerated smoking device according to any one of claims 1 to 6, further comprising an adapter (4) having an air duct (401), wherein the air supply member is an air curtain fan (2), and an air supply outlet (201) of the air curtain fan (2) is communicated with the air inlet (102) through the air duct (401).

8. An accelerated smoking device according to claim 7, wherein the adapter (4) is disposed above the flow guider (1), and one end of the adapter is provided with a mounting cavity (402) suitable for mounting the air curtain fan (2), the other end of the adapter is provided with a mounting opening (403) extending towards the air inlet (102), the air curtain fan (2) is mounted in the mounting cavity (402), the inlet of the air duct (401) is communicated with the air supply opening (201), and the outlet of the air duct (401) is connected with the air inlet (102) through the mounting opening (403).

9. The accelerated smoking device of any one of claims 1 to 6, further comprising an adapter (4) having an air duct (401), wherein the air supply member is a smoke machine fan (3), an air outlet (301) is provided at an air outlet end of the smoke machine fan (3), and the air outlet (301) is selectively communicated with the air inlet (102) through the air duct (401).

10. An accelerated smoking device according to claim 9, wherein a switch valve is provided between the air duct (401) and the air outlet (301), or a switch valve is provided in the air duct (401).

11. A range hood, characterized by comprising:

the smoke collecting cover comprises a smoke collecting cover (5), wherein the bottom of the smoke collecting cover (5) is provided with at least one smoke inlet, and the edge of the smoke inlet is circumferentially provided with a folded edge (501) extending towards the interior of the smoke collecting cover (5);

the air cabinet assembly (6) comprises a box body (61) and a volute fan, the box body (61) is arranged at the top of the fume collecting hood (5) and communicated with the interior of the fume collecting hood (5), and the volute fan is arranged in the box body (61);

an accelerated smoking device according to any one of claims 1 to 10, wherein the number of the accelerated smoking devices is opposite to that of the smoke inlets are connected in the smoke collecting hood (5), each flow guider (1) extends into the corresponding folded edge (501), an annular smoking channel (502) for oil smoke to pass is formed between the folded edge (501) and the flow guider (1), and the annular smoking channel (502) is respectively connected with the air jet, the inside of the smoke collecting hood (5) and the outside of the smoke collecting hood (5).

12. A range hood according to claim 11, further comprising a fixing member (7) disposed inside the smoke collecting hood (5), wherein a fixing member (7) is disposed on a top of each of the flow deflectors (1), the fixing member (7) is respectively connected to a top of the corresponding flow deflector (1) and an upper end of the corresponding folded edge (501), a ventilation portion (701) for allowing airflow to pass is disposed at a position of the fixing member (7) corresponding to the annular smoke sucking passage (502), and the inside of the smoke collecting hood (5) is communicated with the annular smoke sucking passage (502) through the ventilation portion (701).

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