CN113915665B

CN113915665B - Injection smoke guide device and range hood

Info

Publication number: CN113915665B
Application number: CN202111421295.6A
Authority: CN
Inventors: 任富佳; 张玉; 吕春明; 郁明跃; 余国成
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2024-06-11
Anticipated expiration: 2041-11-26
Also published as: CN113915665A

Abstract

The invention provides an injection smoke guide device and a range hood, which relate to the technical field of kitchen appliances and comprise: the smoke guide main body comprises a first smoke guide curved surface protruding outwards; the injection mechanism comprises a fan, an air guide assembly and an injection structure which are connected in sequence, and the air guide assembly is used for transmitting air flow generated by the fan into the injection structure; the injection structure is provided with a nozzle which is used for generating injection air flow on the first smoke guiding curved surface, and the injection air flow flows along the direction of the protruding top end of the first smoke guiding curved surface towards the edge of the first smoke guiding curved surface. The first smoke guiding curved surface is used for blocking and buffering the oil smoke, and the surface curved surface appearance of the first smoke guiding curved surface is used for generating a wall attaching effect on the oil smoke, so that the oil smoke can be more effectively guided to move upwards along the curved surface. The injection mechanism generates injection airflow on the first smoke guiding curved surface, so that injection negative pressure is generated on the first smoke guiding curved surface, and the smoke can be better grasped and guided by combining the curved surface wall attaching effect of the fluid, so that the escape of the smoke is greatly reduced.

Description

Injection smoke guide device and range hood

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to an injection smoke guide device and a range hood.

Background

The smoke exhaust ventilator comprises a smoke guide component, wherein the smoke guide component is arranged between the upper part of a smoke rising and the lower part of a smoke inlet of the smoke exhaust ventilator, and aims at extending negative pressure to the periphery to ensure that the smoke exhaust range is larger and the smoke exhaust ventilator can correspond to the smoke rising from double cooking ranges; secondly, the rising oil smoke is shielded and buffered to reduce the rising speed, so that smoking is facilitated in the surrounding negative pressure area. However, in the implementation, since not only the oil smoke but also the high-temperature exhaust gas after the combustion of the fuel gas, the oil smoke is impacted upwards together; so the rising speed of the oil smoke tends to be fast, and the oil smoke bounces back fast after striking the flat plate, and can cross the negative pressure area at the moment, so that the oil smoke escapes.

Disclosure of Invention

The invention aims to provide an injection smoke guide device and a range hood, so as to solve the technical problem that the existing smoke guide structure is poor in smoke guide effect and causes the oil smoke to overflow.

In a first aspect, an injection smoke guide device provided in an embodiment of the present invention includes: the smoke guide main body comprises a first smoke guide curved surface protruding outwards;

The ejection mechanism comprises a fan, an air guide assembly and an ejection structure which are connected in sequence, and the air guide assembly is used for transmitting air flow generated by the fan into the ejection structure;

The injection structure is provided with a nozzle, the nozzle is positioned below the first smoke guiding curved surface, the nozzle is used for generating injection air flow on the first smoke guiding curved surface, and the injection air flow flows along the direction of the protruding top end of the first smoke guiding curved surface towards the edge of the protruding top end of the first smoke guiding curved surface.

Further, the injection structure is connected with the smoke guiding main body and comprises a first cavity, a branch pipe and a second cavity;

the first cavity is positioned above the smoke guide main body and is connected with the air outlet on the air guide assembly;

The second cavity is positioned below the smoke guide main body, and the nozzle is positioned on the second cavity;

the branch pipe penetrates through the smoke guiding main body and is communicated with the first cavity and the second cavity.

Further, the number of the nozzles is a plurality, and the nozzles encircle the circumferential outer side of the first smoke guiding curved surface;

Or the opening of the nozzle is annular, and the annular nozzle surrounds the circumferential outer side of the first smoke guiding curved surface.

Further, the second cavity is annular and surrounds the circumferential outer side of the first smoke guiding curved surface;

The number of the branch pipes is multiple, and the plurality of the branch pipes surround the circumferential outer side of the first smoke guiding curved surface.

Further, the injection smoke guide device comprises an oil cup for collecting oil stains left on the smoke guide main body;

The oil cup is connected below the smoke guide main body and is positioned in a hollow area inside the ring of the annular second cavity.

Further, the injection smoke guide device comprises an oil cup, the oil cup is located below the smoke guide main body, an air passage is formed in the oil cup, the air passage of the oil cup is connected with the air guide assembly, and the oil cup forms the injection mechanism.

Further, the oil cup comprises an inner layer structure and an outer layer structure which are arranged at intervals inside and outside, the inner layer structure is used for collecting oil stains, a gap between the inner layer structure and the outer layer structure forms the air path, and the nozzle is positioned at the edge of an opening of the oil cup.

Further, a connecting pipe is connected to the inner layer structure of the oil cup, and an opening at the lower end of the connecting pipe is communicated with the air passage;

The injection structure comprises a first drainage tube penetrating through a smoke guiding main body, the air guiding assembly comprises a second drainage tube, an air outlet is formed in an opening of the second drainage tube, an upper end opening of the first drainage tube is connected with the second drainage tube, and a lower end opening of the first drainage tube is connected with an upper end opening of the connecting tube so that the injection structure is in gas communication with the air guiding assembly.

Further, the first drainage tube is detachably connected with the second drainage tube;

and/or the first drainage tube is detachably connected with the connecting tube.

Further, the opening of the nozzle faces to be parallel to the tangential direction of the first smoke guiding curved surface.

Further, the injection structure comprises a first drainage tube, the air guide assembly comprises a second drainage tube, an air outlet is formed in an opening of the second drainage tube, and the first drainage tube is detachably connected with the second drainage tube so that the injection structure is in gas communication with the air guide assembly.

Further, the smoke guiding main body further comprises a second smoke guiding curved surface which faces away from the first smoke guiding curved surface and protrudes in the direction away from the first smoke guiding curved surface.

Further, the injection smoke guide device further comprises a connecting rod connected with the range hood, and the lower end of the connecting rod is connected with the smoke guide main body.

Further, the injection smoke guide device further comprises a fixing part, wherein a connecting structure is arranged on the fixing part and is used for being connected with a connecting rod, so that the connecting rod is detachably connected with the fixing part;

The air guide assembly is detachably connected with the injection structure.

Further, a clamping groove which is recessed inwards in the radial direction is formed in the circumferential side wall of the upper end of the connecting rod, a jack is formed in the fixing portion, an elastic buckle with activity in the radial direction is arranged on the inner wall of the jack, and the elastic buckle is used for being clamped with the clamping groove and preventing the connecting rod from being separated from the jack;

The air guide assembly is connected with the injection structure in a plugging manner along the depth direction of the jack.

Further, the injection smoke guide device further comprises a driving mechanism, wherein the driving mechanism is connected with the connecting rod and used for driving the smoke guide main body to move towards or away from a smoke inlet of the smoke collecting cover;

the air guide assembly is in sliding connection with the injection structure along the movement direction of the smoke guide main body, and the air guide assembly is always communicated with the injection structure in the sliding process.

Further, the number of the driving mechanisms and the number of the connecting rods are multiple and are in one-to-one correspondence;

or the injection smoke guide device further comprises a linkage frame, the number of the connecting rods is multiple, and the connecting rods are connected with the linkage frame; the driving mechanism is connected with the linkage frame and is used for driving the smoke guide main body to move through the linkage frame.

In a second aspect, an embodiment of the present invention provides a range hood, including the injection smoke guiding device.

Further, the range hood comprises a fume collecting hood, a shell and a fan assembly, wherein the shell is connected above the fume collecting hood, and the fan assembly is positioned in the shell;

the air guide assembly is connected to the inner side of the shell, the fan is connected to the outer side of the shell, and an air guide hole used for communicating the air guide assembly and the fan is formed in the shell.

The injection smoke guide device provided by the embodiment of the invention comprises: the smoke guide main body comprises a first smoke guide curved surface protruding outwards; the ejection mechanism comprises a fan, an air guide assembly and an ejection structure which are connected in sequence, and the air guide assembly is used for transmitting air flow generated by the fan into the ejection structure; the injection structure is provided with a nozzle, the nozzle is positioned below the first smoke guiding curved surface, the nozzle is used for generating injection air flow on the first smoke guiding curved surface, and the injection air flow flows along the direction of the protruding top end of the first smoke guiding curved surface towards the edge of the protruding top end of the first smoke guiding curved surface. The injection smoke guide device is arranged below a smoke inlet of the smoke collecting hood, the first smoke guide curved surface faces the smoke rising area, and the first smoke guide curved surface disperses negative pressure in the middle of the smoke ventilator to the periphery. The first smoke guiding curved surface is utilized to block and buffer the smoke, the surface curved surface appearance of the first smoke guiding curved surface is utilized to generate a wall attaching effect on the smoke, the smoke can be effectively guided to move upwards along the curved surface, a negative pressure area around the smoke guiding structure is finally introduced, the escape phenomenon after the smoke impacts the smoke guiding structure to rebound can be effectively improved, meanwhile, the injection mechanism generates injection airflow on the first smoke guiding curved surface, the injection airflow moves from bottom to top along the first smoke guiding curved surface, the injection negative pressure is generated on the first smoke guiding curved surface, the fluid curved surface wall attaching effect is combined, the smoke can be better grasped and guided, and the escape of the smoke is greatly reduced.

The range hood provided by the embodiment of the invention comprises the injection smoke guide device. Because the range hood provided by the embodiment of the invention cited the injection smoke guide device, the range hood provided by the embodiment of the invention also has the advantages of the injection smoke guide device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of an injection smoke guide device provided in embodiment 1 of the present invention;

Fig. 2 is a side view of the injection smoke guide device provided in embodiment 1 of the present invention;

fig. 3 is an injection schematic diagram of the injection smoke guide device provided in embodiment 1 of the present invention;

fig. 4 is a front sectional view of the injection smoke guide device provided in embodiment 1 of the present invention;

FIG. 5 is an enlarged view of a portion of the position A of FIG. 4;

fig. 6 is a side view cross-sectional view of the injection smoke guide device provided in embodiment 1 of the present invention;

FIG. 7 is an enlarged view of a portion of the B position of FIG. 6;

Fig. 8 is a schematic diagram of the injection smoke guiding device provided in embodiment 1 of the present invention in a range hood;

fig. 9 is an exploded view of the injection smoke guide device provided in embodiment 1 of the present invention in a range hood;

Fig. 10 is a schematic view of point injection of the injection smoke guide device provided in embodiment 1 of the present invention;

FIG. 11 is a schematic view of continuous injection of an injection smoke guide device according to embodiment 1 of the present invention;

Fig. 12 is a schematic view of another smoke guiding main body of the injection smoke guiding device provided in embodiment 1 of the present invention;

Fig. 13 is a front sectional view of the injection smoke guide device provided in embodiment 2 of the present invention;

FIG. 14 is an enlarged view of a portion of the position C of FIG. 13;

Fig. 15 is a cross-sectional view of the injection smoke guide device provided in embodiment 3 of the present invention in a side view of the device mounted on a range hood;

fig. 16 is a schematic view of the injection smoke guiding device provided in embodiment 3 of the present invention mounted on a range hood;

Fig. 17 is an exploded view of the injection smoke guide device provided in embodiment 3 of the present invention mounted on a range hood;

Fig. 18 is a schematic view of the injection smoke guiding device provided in embodiment 4 of the present invention mounted on a range hood;

fig. 19 is a schematic installation diagram of an injection smoke guide device provided in embodiment 4 of the present invention;

Fig. 20 is a schematic view of another injection smoke guide device provided in embodiment 4 of the present invention;

Fig. 21 is a schematic diagram of a first range hood according to an embodiment of the present invention;

fig. 22 is a schematic diagram of a second range hood according to an embodiment of the present invention;

FIG. 23 is a view in the direction D of FIG. 22;

fig. 24 is a schematic view of a third range hood according to an embodiment of the present invention;

fig. 25 is a schematic diagram of a fourth range hood according to an embodiment of the present invention;

Fig. 26 is a schematic diagram of a fifth range hood according to an embodiment of the present invention.

Icon: 100-fume collecting hood; 110-a smoke inlet; 200-a smoke guiding main body; 210-a first smoke guiding curved surface; 220-a second smoke guiding curved surface; 230-mounting holes; 240-oil leakage holes; 300-an injection mechanism; 310-fans; 320-an air guiding assembly; 321-a second drainage tube; 330-injecting structure; 331-a first drainage tube; 341-a first annular sealing ring; 342-a second ring seal; 343-a third annular seal ring; 351-a first cavity; 352-branch pipe; 353-a second cavity; 360-nozzle; 420-oil cup; 421-connecting the columns; 430-inner layer structure; 440-outer layer structure; 450-connecting pipes; 500-connecting rod; 510-a clamping groove; 610-a fixing part; 620-elastic snap; 700-driving mechanism; 710—push rod; 720-linkage frame.

Detailed Description

The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

The injection smoke guide device provided by the embodiment of the invention can be applied to European and side-suction type smoke exhaust ventilator.

As shown in fig. 1, the injection smoke guide device is located below the smoke inlet 110 of the smoke collecting hood 100, and the injection smoke guide device comprises a smoke guide main body 200 for blocking and guiding smoke, and gaps are formed between the smoke guide main body 200 and the peripheral edges of the smoke collecting hood 100.

As shown in fig. 2-5, the smoke guiding body 200 includes a first smoke guiding curved surface 210 protruding outward. The injection mechanism 300 comprises a fan 310, an air guide assembly 320 and an injection structure 330 which are sequentially connected, and air flow generated by the fan 310 can enter the injection structure 330 through a channel inside the air guide assembly 320.

The injection structure 330 is provided with a nozzle 360, the nozzle 360 is located below the first smoke guiding curved surface 210, the nozzle 360 is configured to generate an injection airflow on the first smoke guiding curved surface 210, and the injection airflow flows along the direction of the protruding top end of the first smoke guiding curved surface 210 towards the edge thereof, where the cross section of the first smoke guiding curved surface 210 in the protruding direction may be circular or elliptical. The injection smoke guide device is arranged below the smoke inlet 110 of the smoke collecting cover 100, the first smoke guide curved surface 210 faces the smoke rising area, and the first smoke guide curved surface 210 distributes negative pressure in the middle of the smoke ventilator to the periphery. The first smoke guiding curved surface 210 is utilized to block and buffer the smoke, and then the surface curved surface appearance is utilized to generate a wall attaching effect on the smoke, so that the smoke can be more effectively guided to move upwards along the curved surface, and finally, a negative pressure area around the smoke guiding structure is introduced, the escape phenomenon after the smoke impacts the smoke guiding structure to rebound can be effectively improved, meanwhile, the injection mechanism 300 generates injection airflow on the first smoke guiding curved surface 210, the injection airflow moves from bottom to top along the first smoke guiding curved surface 210, the injection negative pressure is generated on the first smoke guiding curved surface 210, and the smoke can be better grasped and guided by combining the curved surface wall attaching effect of the fluid, so that the escape of the smoke is greatly reduced.

As shown in fig. 5, the injection structure 330 may be connected to the smoke guiding main body 200, and the injection structure 330 includes a first cavity 351, a branch pipe 352 and a second cavity 353; the first cavity 351 is located above the smoke guiding main body, and the first cavity 351 is connected with an air outlet on the air guiding component; the second cavity 353 is located below the smoke guide body 200, and the nozzle 360 is located on the second cavity 353; the branch pipe 352 penetrates the smoke guiding body 200 and communicates the first cavity 351 with the second cavity 353.

The first and second cavities 351 and 353 are respectively located at the upper and lower sides of the smoke guide body 200, and are in gas communication through the branch pipes 352. The smoke guide body 200 is provided with an assembly through-hole through which the branch pipe 352 passes. A portion of the injection structure 330 is located above the smoke guiding body 200, reducing the volume of the injection structure 330 exposed to the outside.

As shown in fig. 10, in one embodiment, the number of the nozzles 360 may be plural, and the plurality of nozzles 360 may be wound around the circumferential outer side of the first curved smoke guiding surface 210, and may spray the first curved smoke guiding surface 210 from plural points in the circumferential direction of the first curved smoke guiding surface 210. In another embodiment, as shown in fig. 11, the opening of the nozzle 360 may be annular, and the annular nozzle 360 surrounds the circumferential outer side of the first curved smoke guiding surface 210, and may continuously and uniformly spray the first curved smoke guiding surface 210 in the circumferential direction of the first curved smoke guiding surface 210.

As shown in fig. 6-9, the second cavity 353 is annular, and the second cavity 353 surrounds the circumferential outer side of the first smoke guiding curved surface; the number of the branch pipes 352 is plural, and the plurality of branch pipes 352 are wound around the circumferential outer side of the first smoke guiding curved surface.

The air flow in the first cavity 351 can uniformly enter the annular second cavity 353 through each branch pipe 352, and then is sprayed out from the nozzle 360 on the second cavity 353, and the air pressures at all positions in the second cavity 353 are approximately similar, so that the pressure of the injection air flow at all positions in the circumferential direction of the first smoke guiding curved surface 210 is the same, and the purpose of uniform injection air flow is achieved. The first chamber may also be annular in order to reduce the weight of the injection mechanism.

The opening of the nozzle 360 is parallel to the tangential direction of the first curved smoke guiding surface 210.

As shown in fig. 3, when the opening of the nozzle 360 is in a small hole structure, the direction of the opening may be parallel to the tangential direction of a certain position on the first smoke guiding curved surface 210, and when the opening of the nozzle 360 is in a ring shape, the conical air curtain generated by the ring-shaped opening is tangential to the first smoke guiding curved surface 210. Thus, the air flow resistance is smaller, and the injection effect is better. And the gap X between the nozzle 360 and the first curved smoke guiding surface 210 may be greater than 2mm, avoiding contamination of the nozzle 360 by oil stains on the first curved smoke guiding surface 210.

As shown in fig. 5, the injection structure 330 includes a first drainage tube 331, the air guiding assembly 320 includes a second drainage tube 321, an air outlet is formed by an opening of the second drainage tube 321, and the first drainage tube 331 is detachably connected with the second drainage tube 321, so that the injection structure 330 is in gas communication with the air guiding assembly 320.

For example, the first drainage tube 331 and the second drainage tube 321 may be connected in a pluggable manner, and after the first drainage tube 331 is connected to the second drainage tube 321, the gas generated by the fan 310 may enter the injection structure 330. The second drainage tube 321 can be pegged graft in the inboard of first drainage tube 331, in order to increase the leakproofness and the joint strength of both, can be provided with first ring-shaped seal circle 341 on the inner wall of first drainage tube 331, the material can be flexible material such as rubber, set up the first spacing groove that corresponds with first ring-shaped seal circle 341 on the outer wall of second drainage tube 321, when first drainage tube 331 and second drainage tube 321 peg graft, first ring-shaped seal circle 341 enters into first spacing inslot, on the one hand, first ring-shaped seal circle 341 can increase the leakproofness between first drainage tube 331 and the second drainage tube 321, on the other hand, first spacing groove can prevent first drainage tube 331 and the separation of second drainage tube 321 with first ring-shaped seal circle 341. And when the user pulls out the first drainage tube 331 with a large force, the elastic force of the first annular sealing ring 341 can be overcome, so that the first annular sealing ring 341 is deformed, and the first drainage tube 331 and the second drainage tube 321 are separated.

As shown in fig. 5, the injection smoke guide apparatus includes an oil cup 420 for collecting oil dirt left on the smoke guide body 200; the oil cup 420 is connected below the smoke guiding body 200 and is located in a hollow area inside the ring of the annular second cavity 353.

The greasy dirt on the smoke guiding main body 200 can be gathered from top to bottom along the first smoke guiding curved surface 210, then drops into the oil cup 420, and the second cavity 353 with annular design provides space for the installation of the oil cup 420, so that the device structure is more compact. In this embodiment, the connection post 421 may be disposed on the oil cup 420, and the installation hole 230 recessed inwards is disposed on the smoke guiding main body 200, the connection post 421 may be installed in the installation hole 230 by means of plugging, in order to increase the connection strength between the connection post 421 and the installation hole 230, a second annular sealing ring 342 may be disposed on the inner wall of the connection hole, the material may be a flexible material such as rubber, and a second limiting groove corresponding to the second annular sealing ring 342 is disposed on the outer wall of the connection post 421, when the connection post 421 and the installation hole 230 are plugged, the second annular sealing ring 342 enters into the second limiting groove, and the second limiting groove and the second annular sealing ring 342 may prevent the connection post 421 and the installation hole 230 from being separated due to gravity. When the user pulls the oil cup 420 outward with a large force, the elastic force of the second annular sealing ring 342 can be overcome, so that the second annular sealing ring 342 is deformed, and the connecting post 421 is pulled out from the mounting hole 230.

As shown in fig. 12, the smoke guiding body 200 further includes a second smoke guiding curved surface 220 facing away from the first smoke guiding curved surface 210 and protruding in a direction away from the first smoke guiding curved surface 210.

In another embodiment, both the upper and lower surfaces of the smoke guiding body 200 may be curved, and the smoke guiding body 200 may be substantially shuttle-shaped. When the oil smoke flows upwards over the first smoke guiding curved surface 210 and enters the second smoke guiding curved surface 220, the second smoke guiding curved surface 220 can also play a wall-attached guiding role on the oil smoke, and the oil smoke can be locked more effectively.

The injection smoke guide device further comprises a connecting rod 500 connected with the range hood, and the lower end of the connecting rod 500 is connected with the smoke guide main body 200.

The connecting rod 500 may be integrally formed with the smoke guiding body 200, or the connecting rod 500 may be detached from the smoke guiding body 200, for example, the connecting rod 500 is screwed with the smoke guiding body 200.

The upper end of the connecting rod 500 can be fixed on the main body of the cigarette making machine, and the connecting rod 500 is not detachable from the main body of the cigarette making machine.

The blower 310 and the air guide assembly 320 may be fixedly connected to the main body of the hood, and the side surface of the hood 100 has ventilation holes corresponding to the blower 310.

As shown in fig. 14, the smoke guide body 200 is provided with oil leakage holes 240 communicating the upper and lower surfaces, and an oil cup 420 is provided under the oil leakage holes 240.

Example 2

Unlike embodiment 1, in embodiment 1, the injection structure 330 and the oil cup 420 are separate structural members, and in this embodiment, the injection structure 330 is formed by using the oil cup 420.

As shown in fig. 13 and 14, the injection smoke guiding device includes an oil cup 420, the oil cup 420 is located below the smoke guiding main body 200, an air path is provided inside the oil cup 420, the air path of the oil cup 420 is connected with the air guiding component 320, and the oil cup 420 forms the injection mechanism 300.

The oil cup 420 is used for collecting oil stains left on the smoke guide main body 200, the oil cup 420 is internally provided with an air channel, the oil cup 420 is provided with a nozzle 360, and air in the air channel can be sprayed out through the nozzle 360. The nozzle 360 is located below the first curved smoke guiding surface 210, and the nozzle 360 is configured to generate an injection airflow on the first curved smoke guiding surface 210, where the injection airflow flows along a direction from a protruding top end of the first curved smoke guiding surface 210 toward an edge thereof.

As shown in fig. 14, specifically, the oil cup 420 includes an inner layer structure 430 and an outer layer structure 440 disposed at an inner and outer interval, the inner layer structure 430 is used for collecting oil stains, a gap between the inner layer structure 430 and the outer layer structure 440 forms the air path, and the nozzle 360 is located at an opening edge of the oil cup 420.

The gap inside the oil cup 420 of the double-layer design forms an air path, and the gap between the edge of the inner layer structure 430 and the edge of the outer layer structure 440 may form an annular nozzle 360, thereby achieving continuous and uniform injection in the circumferential direction. Providing a plurality of stop structures circumferentially spaced between the inner 430 and outer 440 structures may separate the annular opening into a plurality of small hole-like openings to achieve point-ejection circumferentially. The stop structure may serve to connect the inner layer structure 430 and the outer layer structure 440.

A connecting pipe 450 is connected to the inner layer structure 430 of the oil cup 420, and the opening at the lower end of the connecting pipe 450 is communicated with the air path; the injection structure 330 comprises a first drainage tube 331 penetrating through the smoke guiding main body 200, the air guiding component 320 comprises a second drainage tube 321, an air outlet is formed in an opening of the second drainage tube 321, an upper end opening of the first drainage tube 331 is connected with the second drainage tube 321, and a lower end opening of the first drainage tube 331 is connected with an upper end opening of the connecting tube 450 so that the injection structure 330 is in gas communication with the air guiding component 320.

The lower end of the first drainage tube 331 may be connected with the first smoke guiding curved surface 210, and the first drainage tube 331 may be integrally formed with the smoke guiding main body 200. The upper end of the connection pipe 450 is inserted into the lower end opening of the first drainage tube 331, the lower end of the second drainage tube 321 is inserted into the upper end opening of the first drainage tube 331, and the air path inside the air guide assembly 320 and the oil cup 420 is communicated by using the first drainage tube 331.

In order to facilitate cleaning of the smoke guiding main body 200, the first drainage tube 331 and the second drainage tube 321 may be detachably connected, for example, may be connected by a plug connection.

To facilitate the cleaning of the oil cup 420 alone, the first drain 331 is detachably connected, e.g., connected by plugging, to the connecting pipe 450.

The connecting pipe 450 can peg graft in the inboard of first drainage tube 331, in order to increase the leakproofness and the joint strength of both, can be provided with third ring seal 343 on the inner wall of first drainage tube 331, the material can be flexible material such as rubber, set up the third spacing groove that corresponds with third ring seal 343 on the outer wall of connecting pipe 450, when first drainage tube 331 and connecting pipe 450 peg graft, third ring seal 343 enters into the third spacing inslot, on the one hand, third ring seal 343 can increase the leakproofness between first drainage tube 331 and the connecting pipe 450, on the other hand, third spacing groove and third ring seal 343 can prevent first drainage tube 331 and connecting pipe 450 separation. When the user pulls the oil cup 420 outwards with a large force, the elastic force of the third annular sealing ring 343 can be overcome, so that the third annular sealing ring 343 is deformed, and the oil cup 420 is removed from the first drainage tube 331.

Example 3

As shown in fig. 15 to 17, the present embodiment is different from embodiments 1 and 2 in that the smoke guide body 200 is detachable from the main body of the cigarette maker. The injection smoke guide device further comprises a fixing part 610, wherein a connecting structure is arranged on the fixing part 610 and used for being connected with the connecting rod 500, so that the connecting rod 500 is detachably connected with the fixing part 610; the air guiding assembly 320 is detachably connected with the injection structure 330.

As shown in fig. 16 and 17, the fixing portion 610 is fixedly connected to the main body of the cigarette maker, and the two are relatively fixed. The upper end of the connecting rod 500 is detachably connected with the fixing part 610 through a connecting structure, and the air guide assembly 320 and the injection structure 330 are detachably connected, so that the smoke guide main body 200 is conveniently taken down from the smoke machine main body for cleaning. The upper end of the link 500 may be connected to the fixing portion 610 by a snap-fit, or magnetic attachment.

As shown in fig. 15 and 17, a circumferential side wall of the upper end of the connecting rod 500 is provided with a clamping groove 510 recessed inward in a radial direction, the fixing portion 610 is provided with an insertion hole, an inner wall of the insertion hole is provided with an elastic buckle 620 having a movable amount in a radial direction, and the elastic buckle 620 is used for being clamped with the clamping groove 510 and preventing the connecting rod 500 from being separated from the insertion hole; the air guide assembly 320 and the injection structure 330 are connected in a pluggable manner along the depth direction of the jack.

The circumferential side wall of the connecting rod 500 may be provided with an annular clamping groove 510 recessed inward in the radial direction, and an elastic buckle 620 capable of moving in the radial direction is provided on the inner wall of the insertion hole of the fixing portion 610, in a natural state, the elastic buckle 620 protrudes out of the inner wall of the insertion hole, after the connecting rod 500 is inserted into the insertion hole, the connecting rod 500 can push the elastic buckle 620 to the outside, and when the clamping groove 510 moves to be aligned with the elastic buckle 620, the elastic buckle 620 restores to the original shape and moves inward and is inserted into the clamping groove 510, thereby preventing the connecting rod 500 from continuing to move along the insertion hole. The air guiding component 320 and the injection structure 330 are connected in a plug-in manner along the depth direction of the jack, that is, can be connected in a sliding plug-in manner through the first drainage tube 331 and the second drainage tube 321.

As shown in fig. 15, the elastic buckle 620 may include an abutting portion in a bent state, where the abutting portion includes a first guiding inclined surface facing the opening side of the jack, and a second guiding inclined surface facing away from the opening, and the first guiding inclined surface and the second guiding inclined surface are connected. The card slot 510 may be a "V" shaped slot. When the upper end of the link 500 is inserted into the insertion hole and contacts with the first guiding inclined surface, the abutting portion can be pushed radially outwards, so that the upper end of the link 500 moves the abutting portion until the abutting portion is clamped into the clamping groove 510, and when the link 500 is reversely pulled out, the link 500 can push the second guiding inclined surface downwards to overcome the elastic force of the elastic buckle 620, so that the abutting portion moves radially outwards again, and the link 500 can pass over the abutting portion and be pulled out from the insertion hole.

Example 4

As shown in fig. 18, unlike in embodiment 1 and embodiment 2, the injection smoke guiding device further includes a driving mechanism 700, where the driving mechanism 700 is connected to the connecting rod 500, and is used to drive the smoke guiding main body 200 to move toward or away from the smoke inlet 110 of the smoke collecting hood 100; the air guiding assembly 320 and the injection structure 330 are slidably connected along the movement direction of the smoke guiding main body 200, and the air guiding assembly 320 and the injection structure 330 are always communicated in the sliding process. Because the user's service environment is different, and some user kitchen environment can receive external interference, leads to the oil smoke to rise in-process and can be scattered in disorder, and smoke guiding main part 200 descends a bit this moment, moves down negative pressure, can be better prevent the oil smoke escape.

The driving mechanism 700 may be fixedly connected to the inside of the main body of the cigarette maker, and the link 500 and the driving mechanism 700 may be fixedly connected, i.e., non-detachably connected; and the smoke guide main body 200 can be detachably connected, so that the smoke guide main body 200 can be conveniently cleaned.

In the first embodiment of the present invention, the number of the driving mechanisms 700 and the number of the links 500 are plural and correspond to each other one by one. The drive mechanism 700 may include a push rod motor and push rod 710, the push rod 710 being configured to couple the push rod motor to the link 500. As shown in fig. 19, the push rod 710 and the link 500 may be detachably connected by plugging. In this embodiment, the number of the connecting rods 500 is two, and thus the number of the driving mechanisms 700 is also two, and the two push rod motors synchronously move to realize the movement of the smoke guiding main body 200.

As shown in fig. 20, in the second implementation manner of this embodiment, the smoke guiding structure further includes a linkage frame 720, the number of the connecting rods 500 is plural, and the plurality of connecting rods 500 are connected to the linkage frame 720; the driving mechanism 700 is connected to the linkage frame 720, and is configured to drive the smoke guiding main body 200 to move through the linkage frame 720. In this embodiment, the number of the links 500 may be two, the link frame 720 connects the two links 500, the driving mechanism 700 includes a push rod motor and a push rod 710, the push rod 710 is connected to the link frame 720, and the smoke guide body 200 is lifted by one push rod motor.

As shown in fig. 9, the range hood comprises a fume collecting hood, a shell and a fan assembly, wherein the shell is connected above the fume collecting hood, and the fan assembly is positioned inside the shell; the air guide assembly 320 is connected to the inner side of the housing, the fan 310 is connected to the outer side of the housing, and an air guide hole for communicating the air guide assembly 320 and the fan 310 is formed in the housing.

The range hood may further include an exterior facing provided on an outer side of the housing, and a ventilation opening corresponding to the blower 310 may be provided on the exterior facing.

The range hood can be European or side-draft.

As shown in fig. 21, in the euro range hood, the smoke guide body 200 is disposed under the smoke collecting hood 100, and the air inlet area may be located around the smoke guide body 200; an oil cup 420 is provided under the smoke guide body 200. The nozzle may be provided on the oil cup.

As shown in fig. 22 and 23, in the euro-type tilting range hood, the smoke guide body 200 is obliquely disposed under the smoke collecting hood 100, and the air inlet area may be located at the left, right and front sides of the smoke guide body 200. The oil cup 420 may be disposed at the lowest end of the fume collecting hood 100, and may catch dirty oil flowing down from the lowest portions of the fume collecting hood 100 and the fume guiding body 200. The nozzle may be provided on the oil cup.

As shown in fig. 24, in the side fume exhaust fan, the fume guide body 200 is obliquely arranged in front of the fume collecting hood 100, and the air inlet enters from the periphery of the fume guide body 200, and the fume collecting hood 100 and the fan system are combined into a whole; the oil cup 420 is disposed at the lowest end of the fume collecting hood 100, and can catch dirty oil flowing down from the lowest parts of the fume collecting hood 100 and the fume guiding body 200.

As shown in fig. 25 and 26, the range hood may have two or more chambers, each of which is provided with an injection smoke guiding structure.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. An injection smoke guide apparatus, comprising: the smoke guide device comprises a smoke guide main body (200) and an injection mechanism (300), wherein the smoke guide main body (200) comprises a first smoke guide curved surface (210) protruding outwards; gaps are formed between the smoke guide main body (200) and the peripheral edges of the smoke collecting cover (100);

The injection mechanism (300) comprises a fan (310), an air guide assembly (320) and an injection structure (330) which are sequentially connected, wherein the air guide assembly (320) is used for transmitting air flow generated by the fan (310) into the injection structure (330);

The injection structure (330) is provided with a nozzle (360), the nozzle (360) is positioned below the first smoke guiding curved surface (210), the nozzle (360) is used for generating injection airflow on the first smoke guiding curved surface (210), and the injection airflow flows along the direction of the protruding top end of the first smoke guiding curved surface (210) towards the edge of the first smoke guiding curved surface.

2. The injection smoke-guiding device according to claim 1, wherein the number of the nozzles (360) is plural, and the plurality of nozzles (360) are arranged around the circumference of the first smoke-guiding curved surface (210);

Or the opening of the nozzle (360) is annular, and the annular nozzle (360) surrounds the circumferential outer side of the first smoke guiding curved surface (210).

3. The injection smoke-guiding device according to claim 1, wherein the injection structure (330) is connected with the smoke-guiding main body (200), the injection structure (330) comprising a first cavity (351), a branch pipe (352) and a second cavity (353);

the first cavity (351) is positioned on one side of the first smoke guiding curved surface (210) facing the opposite side, and the first cavity (351) is connected with an air outlet on the air guiding assembly;

the second cavity (353) is positioned at one side of the first smoke guiding curved surface (210) facing, and the nozzle (360) is positioned on the second cavity (353);

The branch pipe (352) penetrates through the smoke guiding main body (200) and communicates the first cavity (351) with the second cavity (353).

4. An injection smoke-guiding device according to claim 3, characterized in that the second cavity (353) is annular, the second cavity (353) surrounding the circumferential outer side of the first smoke-guiding curved surface (210);

the number of the branch pipes (352) is plural, and the plurality of the branch pipes (352) are surrounded on the circumferential outer side of the first smoke guiding curved surface (210).

5. The injection smoke-guiding device according to claim 4, wherein the injection smoke-guiding device comprises an oil cup (420) for collecting oil stains left on the smoke-guiding body (200);

the oil cup (420) is connected below the smoke guiding main body (200) and is positioned in a hollow area inside the ring of the annular second cavity (353).

6. The injection smoke guide device according to claim 1, wherein the injection smoke guide device comprises an oil cup (420), the oil cup (420) is located below the smoke guide main body (200), an air passage is formed in the oil cup (420), the air passage of the oil cup (420) is connected with the air guide assembly (320), and the oil cup (420) forms the injection mechanism (300).

7. The injection smoke guide device according to claim 6, wherein the oil cup (420) comprises an inner layer structure (430) and an outer layer structure (440) which are arranged at intervals, the inner layer structure (430) is used for collecting oil stains, a gap between the inner layer structure (430) and the outer layer structure (440) forms the air path, and the nozzle (360) is located at the opening edge of the oil cup (420).

8. The injection smoke guide device according to claim 7, wherein a connecting pipe (450) is connected to the inner layer structure (430) of the oil cup (420), and the lower end opening of the connecting pipe (450) is communicated with the air passage;

The injection structure (330) comprises a first drainage tube (331) penetrating through the smoke guiding main body (200), the air guiding component (320) comprises a second drainage tube (321), an air outlet is formed in an opening of the second drainage tube (321), an upper end opening of the first drainage tube (331) is connected with the second drainage tube (321), and a lower end opening of the first drainage tube (331) is connected with an upper end opening of the connecting tube (450) so that the injection structure (330) is communicated with the air guiding component (320).

9. The injection smoke guide device according to claim 8, characterized in that the first drainage tube (331) is detachably connected to the second drainage tube (321);

And/or the first drainage tube (331) is detachably connected with the connecting tube (450).

10. The injection smoke-guiding device according to any one of claims 1-9, wherein the opening of the nozzle (360) is oriented parallel to the tangential direction of the first smoke-guiding curved surface (210).

11. The injection smoke-guiding device according to any one of claims 1-7, wherein the injection structure (330) comprises a first drainage tube (331), the air guiding assembly (320) comprises a second drainage tube (321), an air outlet is formed in an opening of the second drainage tube (321), and the first drainage tube (331) is detachably connected with the second drainage tube (321) so that the injection structure (330) is communicated with the air guiding assembly (320).

12. The injection smoke-guiding device according to any one of claims 1-9, wherein the smoke-guiding body (200) further comprises a second smoke-guiding curved surface (220) facing away from the first smoke-guiding curved surface (210) and protruding away from the direction in which the first smoke-guiding curved surface (210) is located.

13. The injection smoke guide device according to any one of claims 1-9, further comprising a connecting rod (500) connected to the range hood, wherein the lower end of the connecting rod (500) is connected to the smoke guide body (200).

14. The injection smoke guide device according to claim 13, further comprising a fixing portion (610), wherein a connecting structure is arranged on the fixing portion (610), and the connecting structure is used for being connected with a connecting rod (500) so that the connecting rod (500) can be detachably connected with the fixing portion (610);

the air guide assembly (320) is detachably connected with the injection structure (330).

15. The injection smoke guide device according to claim 13, further comprising a driving mechanism (700), wherein the driving mechanism (700) is connected with the connecting rod (500) and is used for driving the smoke guide main body (200) to move towards or away from a smoke inlet (110) of the smoke collecting hood (100);

The air guide assembly (320) and the injection structure (330) are in sliding connection along the movement direction of the smoke guide main body (200), and the air guide assembly (320) and the injection structure (330) are always communicated in the sliding process.

16. A range hood comprising an injection smoke guide apparatus as claimed in any one of claims 1 to 15.

17. The range hood of claim 16, wherein the range hood comprises a fume collection hood, a housing, and a blower assembly, the housing being connected above the fume collection hood, the blower assembly being located inside the housing;

The air guide assembly (320) is connected to the inner side of the shell, the fan (310) is connected to the outer side of the shell, and an air guide hole used for communicating the air guide assembly (320) with the fan (310) is formed in the shell.