CN213480316U

CN213480316U - Cleaning-free range hood

Info

Publication number: CN213480316U
Application number: CN202021742968.9U
Authority: CN
Inventors: 韩君庆; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-06-18
Anticipated expiration: 2030-08-18

Abstract

The utility model belongs to the technical field of range hoods, in particular to a cleaning-free range hood, which comprises a range hood body, a water mist generating assembly, a smoke discharging and demisting assembly and a water box; the water box is connected with the water mist generating assembly and used for supplying water to the water mist generating assembly, and the water mist generating assembly is installed in a machine shell of the range hood body and used for adsorbing oil smoke to form water mist particles; the smoke exhaust and demisting assembly is arranged in a smoke exhaust pipe of the range hood body and used for removing water mist particles in the oil smoke through centrifugal separation and discharging the oil smoke from which the water mist particles are removed out of the range hood body. The utility model discloses an effectual problem that has solved present range hood contains more oil smoke granule in the atmospheric oil smoke of emission into, just of range hood the utility model discloses a range hood can the automatically cleaning.

Description

Cleaning-free range hood

Technical Field

The utility model belongs to the technical field of range hood, concretely relates to exempt from to wash range hood.

Background

The range hood is a household appliance frequently used in a kitchen and is responsible for completely sucking kitchen oil fume and then discharging the oil fume into the atmosphere, along with the increasing environmental protection requirement, the emission standard of the oil fume is gradually improved, and a large number of range hoods which are provided with electrostatic adsorption and are used for intercepting the oil fume adsorbed by a filter screen are also available in the market.

In addition, when the range hood works, a lot of oil smoke can be adhered inside the range hood, too much oil is accumulated on a fan impeller and a wall machine bottom of the range hood, the normal operation of a fan is influenced, the motor load of the range hood is too heavy, the range hood generates heat, a wire is short-circuited, and an engine is burnt to cause a fire disaster.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the oil smoke discharged into the atmosphere of the prior oil smoke exhauster contains more oil smoke particles, the utility model provides a cleaning-free oil smoke exhauster.

The utility model discloses an adopt following scheme to realize: a cleaning-free range hood comprises a range hood body, a water mist generating assembly, a smoke exhaust and demisting assembly and a water box;

the water box is connected with the water mist generating assembly and used for supplying water to the water mist generating assembly, and the water mist generating assembly is installed in a machine shell of the range hood body and used for adsorbing oil smoke to form water mist particles; the smoke exhaust and demisting assembly is arranged in a smoke exhaust pipe of the range hood body and used for removing water mist particles in the oil smoke through centrifugal separation and discharging the oil smoke from which the water mist particles are removed out of the range hood body.

The cleaning-free range hood of the utility model is further improved in that the water mist generating component comprises a water pump and a water mist generating unit;

the water inlet end of the water suction pump is connected with the water box, the water outlet end of the water suction pump is connected with the water mist generation unit and is used for supplying water to the water mist generation unit, and the water mist generation unit is installed in the machine shell and is used for spraying water mist to the machine shell so as to adsorb oil smoke to form water mist particles.

The cleaning-free range hood of the utility model is further improved in that the smoke discharging and demisting component comprises an outer shell for collecting water mist particles, an inner shell, a second air flow channel and a smoke discharging channel communicated with the second air flow channel;

the outer shell is axially sleeved on the second air flow channel which is annularly formed outside the inner shell, and the second air flow channel is communicated with the smoke exhaust pipe and is used for enabling the oil smoke to rotate and move centrifugally and removing water mist particles in the oil smoke by throwing the water mist particles to the side walls of the outer shell and the inner shell; the smoke exhaust channel is arranged in the inner shell and used for exhausting the oil smoke removed with the water mist particles out of the cigarette machine body.

Right the utility model discloses a cleaning-free range hood's further improvement part lies in, and the global tangential direction of shell body is equipped with first air vent, second airflow channel passes through first air vent with the pipe intercommunication of discharging fume.

The further improvement of the cleaning-free range hood of the utility model is that the cleaning-free range hood also comprises an annular cover plate and a first air flow channel;

the outer shell is arranged in the smoke exhaust pipe to form an annular first air flow channel; the annular cover plate is sleeved on the smoke exhaust demisting assembly and is used for sealing the first air flow channel; the first airflow channel communicates with the second airflow channel through the first vent hole.

The further improvement of the cleaning-free range hood of the utility model is that the smoke discharging and demisting component also comprises a movable baffle plate; a second vent hole is formed in the bottom of the outer shell; the movable baffle is installed on the outer shell and used for opening or closing the second vent hole according to the gravity of the collected condensed water of the water mist particles.

The cleaning-free range hood of the utility model is further improved in that the movable baffle plate comprises a baffle plate and an elastic part; one end of the elastic piece is connected with the outer shell, and the other end of the elastic piece is connected with the blocking piece and used for driving the blocking piece to open or close the second vent hole according to the gravity of condensed water.

It is right the utility model discloses a cleaning-free range hood's further improvement part lies in, first air vent is located second airflow channel's upper portion.

The cleaning-free range hood of the utility model is further improved in that the water mist generating unit comprises a water mist spray pipe; the pipe wall of the water mist spray pipe is provided with a plurality of spray holes for spraying water mist, and the water mist spray pipe is connected with the water suction pump.

It is right that the utility model discloses a cleaning-free range hood's further improvement part lies in, jet orifice circumference is arranged on the pipe wall of water smoke spray tube.

The cleaning-free range hood of the utility model is further improved in that the water mist generating unit also comprises a flow guide piece; the water suction pump is communicated with a water inlet of the flow guide piece, and a water outlet of the flow guide piece is communicated with the water spray pipe.

The further improvement of the cleaning-free range hood of the utility model is that the flow guide unit comprises a first flow guide pipe, a second flow guide pipe and a third flow guide pipe;

the water suction pump is connected with a water inlet of the first flow guide pipe, and two water outlets of the first flow guide pipe are respectively communicated with the second flow guide pipe and the third flow guide pipe; the water mist spray pipe is arranged between the second flow guide pipe and the third flow guide pipe, and the water mist spray pipe is arranged at the smoke inlet of the shell and above the oil screen.

It is right the utility model discloses a cleaning-free range hood's further improved part lies in, the quantity of water smoke spray tube is two at least, water smoke spray tube interval is located the second honeycomb duct with between the third honeycomb duct.

Compared with the prior art, adopt above-mentioned scheme the beneficial effects of the utility model are that:

because the water mist generating assembly is arranged in the shell of the cigarette machine body, the generated water mist absorbs the oil smoke pumped into the shell by the cigarette machine body to form water mist particles; part of the generated water mist particles enter the smoke exhaust pipe along with the primarily adsorbed oil smoke, and the other part of the generated water mist particles are collected and condensed on the inner wall of the machine shell, a volute and other parts in the machine shell to form water flow. Therefore, the content of oil smoke particles in the oil smoke is reduced, and the oil smoke is prevented from being adhered to the shell of the smoke exhaust machine body in the process of moving to the smoke exhaust pipe; in addition, because the water mist particles form water flow in the shell after being cooled and condensed, the water flow can flow downwards under the action of gravity, and the water flow also has a certain self-cleaning effect on the shell in the flowing process and finally flows into an oil guide groove of the range hood body, so that the problem that the interior of the existing range hood is difficult to clean is effectively solved.

Because the smoke discharging and demisting component is arranged in the smoke discharging pipe of the range hood body and used for removing the water mist particles in the oil smoke through centrifugal separation and discharging the oil smoke from which the water mist particles are removed out of the range hood body, the oil smoke particles in the oil smoke discharged into the atmosphere can be further reduced, and the problem that the exhaust gas of the range hood contains more oil smoke particles is effectively solved.

Drawings

Fig. 1 is a schematic structural view of a cleaning-free range hood provided by an embodiment of the present invention under a visual sense;

fig. 2 is a schematic structural view of a non-cleaning range hood according to another visual aspect of the present invention;

fig. 3 is a schematic structural view of a cleaning-free range hood provided by the embodiment of the present invention after a smoke collecting hood is removed;

FIG. 4 is a schematic view of the structure of FIG. 3 with a front panel of the housing removed;

FIG. 5 is an exploded view of the structure shown in FIG. 4;

FIG. 6 is a cross-sectional structural schematic of the structure shown in FIG. 3;

fig. 7 is a schematic structural view of a water mist generating assembly of a cleaning-free range hood according to an embodiment of the present invention;

fig. 8 is a partially enlarged schematic view of a water mist spray pipe of a cleaning-free range hood according to an embodiment of the present invention;

fig. 9 is an enlarged schematic view of a structure at a in fig. 6;

fig. 10 is a schematic cross-sectional view of a smoke discharging and demisting assembly of a cleaning-free range hood according to an embodiment of the present invention;

fig. 11 is an enlarged schematic view of B in fig. 10.

In the figure: 1. a cigarette machine body; 2. a water mist generating assembly; 3. a smoke exhaust demisting component; 4. an annular cover plate; 5. a first air flow passage; 11. a smoke exhaust pipe; 12. a housing; 21. a water pump; 22. a water mist generating unit; 221. a water mist spray pipe; 2211. an injection hole; 222. a flow guide member; 2221. a first draft tube; 2222. a second draft tube; 2223. a third draft tube; 31. an outer housing; 32. an inner housing; 33. a movable baffle plate; 35. a second airflow channel; 36. a smoke evacuation channel; 311. a first vent hole; 312. a second vent.

Detailed Description

In order to make the above objects, features, advantages, etc. of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "axial", "radial", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The meaning of "plurality" is two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The embodiment provides a cleaning-free range hood, as shown in fig. 1-6, which comprises a range hood body 1, a water mist generating assembly 2, a smoke exhaust and demisting assembly 3 and a water box;

the water box is connected with the water mist generation assembly 2 and used for supplying water to the water mist generation assembly 2, and the water mist generation assembly 2 is arranged in a shell 12 of the range hood body 1 and used for adsorbing oil smoke to form water mist particles; the smoke discharging and demisting assembly 3 is arranged in a smoke discharging pipe 11 of the smoke machine body 1 and used for removing water mist particles in the smoke through centrifugal separation and discharging the smoke from which the water mist particles are removed out of the smoke machine body 1.

The water box of the embodiment supplies water to the water mist generating assembly 2, the water mist generating assembly 2 can generate water mist, and the generated water mist adsorbs lampblack sucked into the casing 12 by the range hood body 1 to form water mist particles because the water mist generating assembly 2 is installed in the casing 12 of the range hood body 1; part of the generated water mist particles enter the smoke exhaust pipe 11 along with the adsorbed oil smoke, and the other part of the generated water mist particles are collected and condensed on the inner wall of the machine shell 12, a volute and other parts in the machine shell 12 to form water flow. Therefore, the content of oil smoke particles in the oil smoke is reduced, and the oil smoke is prevented from being adhered to the shell 12 of the cigarette machine body 1 in the process of moving to the smoke exhaust pipe 11; in addition, because the water mist particles can flow downwards under the action of gravity after being condensed and collected in the shell 12 to form water flow, the water flow also has a certain self-cleaning effect on the shell 12 in the flowing process and finally flows into the oil guide groove of the range hood body 1, and the problem that the interior of the existing range hood is difficult to clean is effectively solved.

Because the smoke discharging and demisting component 3 is arranged in the smoke discharging pipe 11 of the smoke exhauster body 1 and used for removing water mist particles in the oil smoke through centrifugal separation, and the oil smoke from which the water mist particles are removed is discharged out of the smoke exhauster body 1, the oil smoke particles in the oil smoke discharged into the atmosphere can be further reduced, and the problem that the exhaust gas of the smoke exhauster contains more oil smoke particles is effectively solved.

Further, the water mist generating assembly 2 comprises a water suction pump 21 and a water mist generating unit 22, as shown in fig. 7;

the water inlet end of the water pump 21 is connected with the water box, the water outlet end of the water pump is connected with the water mist generation unit 22 and used for supplying water to the water mist generation unit 22, and the water mist generation unit 22 is installed in the machine shell 12 and used for spraying water mist to the machine shell 12 to adsorb oil smoke to form water mist particles.

The water pump 21 is started to pump the water in the water box to the water mist generating unit 22, the water mist generating unit 22 generates water mist, and the water mist adsorbs the oil smoke in the machine shell 12 to generate water mist particles.

Preferably, the water mist generating unit 22 is installed at the smoke inlet of the cabinet 12 and above the oil screen. The water mist can be mixed with the oil smoke filtered by the oil screen to adsorb oil smoke particles in the oil smoke to form water mist particles; because the range hood is in the running state, the adsorbed oil smoke and water mist particles move towards the smoke exhaust pipe 11 under the action of the fan; and because the smoke exhaust demisting component 3 is arranged in the smoke exhaust pipe 11, the smoke exhaust demisting component 3 can remove water mist particles in the oil smoke through centrifugal separation, and the oil smoke from which the water mist particles are removed is exhausted out of the smoke exhaust machine body 1, so that the content of grease particles in the oil smoke exhausted from the smoke exhaust demisting component 3 is further reduced, and the problem that the content of the oil smoke particles in the waste gas of the existing smoke exhaust ventilator is higher is effectively solved.

The water pump 21 is used for pumping water to the water mist generating unit 22, so that the water mist generating unit 22 generates water mist; on the other hand, the water in the water mist generating unit 22 is pressurized to ensure smooth generation of the water mist and high flow speed of the water mist. If the flow rate of the mist is slow, it may not reach the inner wall of the housing 12 and may not condense on the inner wall of the housing 12, thereby achieving self-cleaning of the inner wall of the housing 12.

In a particular embodiment, as shown in fig. 8, the mist generating unit 22 comprises a mist nozzle 221; the wall of the water mist spray pipe 221 is provided with a plurality of spray holes 2211 for spraying water mist, and the water mist spray pipe 221 is connected with the water pump 21.

Preferably, the water mist spraying pipe 221 is installed at the smoke inlet of the machine shell 12 and is positioned above the oil net.

In a particular embodiment, the water mist generating unit 22 further comprises a flow guide 222; the water pump 21 is communicated with the water inlet of the flow guide piece 222, and the water outlet of the flow guide piece 222 is communicated with the water mist spray pipe 221.

Preferably, the number of the water mist spray pipes 221 is multiple, and the water outlet of the flow guide piece 222 is communicated with the water mist spray pipes 221, so that water can be delivered to the multiple water mist spray pipes 221 at the same time.

In particular embodiments, the flow guide 222 includes a first flow conduit 2221, a second flow conduit 2222, and a third flow conduit 2223;

the water outlet end of the water pump 21 is connected with the first flow guide tube 2221, and the two water outlets of the first flow guide tube 2221 are respectively communicated with the second flow guide tube 2222 and the third flow guide tube 2223; the water mist spraying pipe 221 is arranged between the second flow guide pipe 2222 and the third flow guide pipe 2223, and the water mist spraying pipe 221 is installed at the smoke inlet of the casing 12 and is positioned above the oil screen.

The water pump 21 pumps water to the first draft tube 2221, and the first draft tube 2221 conveys water to the second draft tube 2222 and the third draft tube 2223 at the same time; since the water mist spraying pipe 221 is disposed between the second and

third flow ducts

2222 and 2223, water is simultaneously supplied to the water mist spraying pipe 221 to generate water mist. And because the water mist spray pipe 221 is installed at the smoke inlet of the machine shell 12 and is positioned above the oil screen, the water mist is sprayed into the oil screen and the machine shell 12 at the same time.

In an embodiment, the number of the water mist spraying pipes 221 is at least two, and the water mist spraying pipes 221 are arranged between the second flow guide pipe 2222 and the third flow guide pipe 2223 at intervals.

The interval arrangement of the water mist spray pipes 221 is to enable oil smoke to pass through smoothly, and the range of water mist spraying is expanded as much as possible on the premise that the number of the water mist spray pipes 221 is constant.

Preferably, the diameter of the injection hole 2211 is 0.2mm to 1mm, preferably 0.5mm, to ensure that the water mist is injected. Because if the diameter of the injection hole 2211 is too large, it is possible to inject a water line, which directly drops down to fall into the oil guide groove. And if the diameter is too small, there is a risk that the just ejected mist will be rapidly evaporated.

Preferably, each of the mist discharge pipes 221 is opened at the discharge hole 2211 on the circumferential surface thereof in order to ensure that the mist is discharged toward the upper and lower portions of the housing 12 at the same time.

In addition, the distance between two adjacent injection holes 2211 in the axial direction of each water mist nozzle 221 is 10mm to 20mm, preferably 15 mm.

Starting the water pump 21, pumping the water in the water box to the first draft tube 2221 by the water pump 21, and respectively flowing the water to the second draft tube 2222 and the third draft tube 2223 through the water outlets at the two ends of the first draft tube 2221; since the plurality of water mist spraying pipes 221 are spaced between the second and

third flow pipes

2222 and 2223, water is finally sprayed from the spraying holes 2211 of the water mist spraying pipes 221 to form water mist.

Further, as shown in fig. 9 and 10, the smoke evacuation and demisting assembly 3 includes an outer housing 31 for collecting water mist particles, an inner housing 32, a second air flow passage 35, and a smoke evacuation passage 36 communicating with the second air flow passage 35;

the outer shell 31 is axially sleeved on the second air flow channel 35 which is annularly formed outside the inner shell 32, and the second air flow channel 35 is communicated with the smoke exhaust pipe 11 and is used for enabling the oil smoke to rotate and move centrifugally and removing water mist particles in the oil smoke by throwing the water mist particles to the side walls of the outer shell 31 and the inner shell 32; a smoke evacuation passageway 36 is provided within the inner housing 32 for evacuating the smoke removed water mist particles out of the machine body 1.

The water mist particles thrown to the side walls of the outer shell 31 and the inner shell 32 are condensed to form water drops, the water drops flow downwards under the action of gravity and finally are collected at the bottom of the outer shell 31, and the oil smoke removed with the water mist particles is discharged out of the smoke exhaust machine body 1 from a smoke exhaust pipeline 36.

In the embodiment, in order to rotate and centrifugally move the soot in the second airflow channel 35, a first ventilation hole 311 is formed in the tangential direction of the peripheral surface of the outer housing 31, and the second airflow channel 35 is communicated with the smoke exhaust pipe 11 through the first ventilation hole 311.

The oil smoke after being adsorbed in the smoke exhaust pipe 11 tangentially enters the second air flow channel 35 through the first vent holes 311, the oil smoke after being adsorbed rotates and is centrifuged in the second air flow channel 35, so that water mist particles are thrown to the side walls of the outer shell 31 and the inner shell 32, the water mist particles are condensed on the side walls to form water drops and flow downwards under the action of gravity, and finally the water mist particles are collected at the bottom of the outer shell 31 to achieve the purposes of collecting the water mist particles and removing the water mist particles in the oil smoke. And because the second air flow channel 35 is communicated with the smoke exhausting channel 36, the smoke with water mist particles removed is exhausted out of the range hood body 1 through the smoke exhausting channel 36.

Preferably, the first vent hole 311 is provided at an upper portion of the second airflow path 35. Because the bottom of the smoke exhaust channel 36 is communicated with the bottom of the second airflow channel 35, the flow path of the adsorbed oil smoke in the second airflow channel 35 is increased, the purpose of removing water mist particles is better achieved, and the content of oil smoke particles in the oil smoke is further reduced.

In a specific embodiment, as shown in fig. 9, the cleaning-free range hood further includes an annular cover plate 4 and a first air flow channel 5;

the outer shell 31 is arranged in the smoke exhaust pipe 11 to form an annular first air flow channel 5, and the annular cover plate 4 is sleeved on the smoke exhaust demisting component 3 and is used for sealing the first air flow channel 5; the first air flow path 5 communicates with the second flow path 35 through the first vent hole 311.

After entering the first air flow channel 5, the adsorbed lampblack enters the second air flow channel 35 tangentially through the first vent holes 311, so that the rotation and centrifugation are carried out in the second air flow channel 35, the water mist particles are thrown onto the side walls of the outer shell 31 and the inner shell 32, and finally, the water mist particles are condensed to move downwards along the side walls of the outer shell 31 and the inner shell 32, so that the water mist particles are gathered at the bottom of the outer shell 31; while exhaust gases exit the body 1 of the cigarette maker directly from the smoke evacuation passageway 36.

Further, as shown in fig. 11, the smoke evacuation and defogging assembly 3 further includes a movable baffle 33; the bottom of the outer shell 31 is provided with a second vent hole 312; a movable flap 33 is mounted on the outer housing 31 for opening or closing the second vent 312 depending on the gravity of the condensed water of the collected mist particles.

When the gravity of the condensed water collected at the bottom of the outer shell 31 reaches the gravity threshold value required by the movable blocking piece 33 to open the second vent hole 312, the movable blocking piece 33 opens the second vent hole 312, and at the moment, the condensed water flows into the oil guide groove along the wall surface of the cigarette machine body 1, so that the self-cleaning of the cigarette machine body 1 is realized. When the gravity of the water is smaller than the gravity threshold, the movable blocking piece continues to close the second ventilation hole 312, so that the oil smoke adsorbed in the casing 12 can be prevented from directly flowing out of the body of the range hood from the smoke evacuation channel 36.

Preferably, the movable blocking sheet 33 comprises a blocking sheet and an elastic member; one end of the elastic member is connected to the outer shell 31, and the other end is connected to the blocking piece for driving the blocking piece to open or close the second vent hole 312 according to the gravity of the condensed water.

When the gravity of the condensed water is smaller than the gravity threshold, the elastic piece keeps the blocking piece covered on the second vent hole 312; when the gravity of the condensed water is greater than the gravity threshold, the condensed water has a downward pressure on the blocking piece, and the pressure is greater than an upward pulling force of the elastic member on the blocking piece, so that the blocking piece opens the second vent hole 312.

Preferably, the elastic member may be a spring;

the working process is as follows:

the user starts the range hood body 1; the fan works, and the oil smoke sensor detects the actual concentration C of oil smoke;

judging whether the actual concentration C meets the following conditions: c is not less than C₀In which C is₀Is the corresponding oil smoke concentration threshold value when the water suction pump 21 inspires, preferably, C₀Is 10mg/m³；

If so, the water pump 21 is started to pump the water in the water box to the first draft tube 2221, and the first draft tube 2221 conveys the water to the second draft tube 2222 and the third draft tube 2223 at the same time; since the water mist spraying pipe 221 is disposed between the second and

third flow ducts

The water mist adsorbs oil smoke particles in the oil smoke to form water mist particles; because the fan is in operation, the water mist particles which are not condensed on the inner wall of the enclosure 12 and the adsorbed oil smoke enter the first air flow channel 5, then enter the second air flow channel 35 tangentially through the first vent holes 311, the adsorbed oil smoke rotates and centrifuges in the second air flow channel 35, so that the water mist particles are thrown to the side walls of the outer shell 31 and the inner shell 32, the water mist particles are condensed on the side walls to form water drops, and flow downwards under the action of gravity, and finally are collected at the bottom of the outer shell 31 to realize the effect of collecting the water mist particles to generate waste gas. And because the second airflow channel 35 is in communication with the smoke evacuation passageway 36, the exhaust gases exit the cigarette maker body 1 through the smoke evacuation passageway 36.

When the gravity of the water at the bottom of the outer shell 31 reaches the gravity threshold, the downward pressure of the water on the blocking piece is greater than the upward pulling force of the elastic piece on the blocking piece, so the second ventilation hole 312 is opened by the blocking piece, and the water flows into the oil guide groove along the wall surface of the cigarette machine body 1, so that the self-cleaning of the cigarette machine body 1 is realized.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the described parent features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A cleaning-free range hood is characterized by comprising a range hood body (1), a water mist generating assembly (2), a smoke exhaust and demisting assembly (3) and a water box;

the water box is connected with the water mist generating assembly (2) and used for supplying water to the water mist generating assembly (2), and the water mist generating assembly (2) is installed in a machine shell (12) of the range hood body (1) and used for adsorbing lampblack to form water mist particles; the smoke discharging and demisting assembly (3) is arranged in a smoke discharging pipe (11) of the smoke machine body (1) and used for removing water mist particles in the smoke through centrifugal separation and discharging the smoke from which the water mist particles are removed out of the smoke machine body (1).

2. The no-clean range hood according to claim 1, wherein the water mist generating assembly (2) comprises a water suction pump (21) and a water mist generating unit (22);

the end of intaking of suction pump (21) with the water box is connected, go out the water end with water smoke production unit (22) are connected be used for to water smoke production unit (22) supply water, water smoke production unit (22) are installed be used for in casing (12) to casing (12) spray water smoke forms the water smoke granule in order to adsorb the oil smoke.

3. The no-clean range hood according to claim 1, characterized in that the smoke evacuation defogging assembly (3) comprises an outer shell (31) for collecting water mist particles, an inner shell (32), a second air flow channel (35), and a smoke evacuation channel (36) communicated with the second air flow channel (35);

the outer shell (31) is axially sleeved on the second air flow channel (35) which is annularly formed outside the inner shell (32), and the second air flow channel (35) is communicated with the smoke exhaust pipe (11) and used for enabling oil smoke to rotate and move centrifugally, so that water mist particles in the oil smoke are removed by throwing the water mist particles to the outer shell (31) and the side wall of the inner shell (32); the smoke exhaust channel (36) is arranged in the inner shell (32) and used for exhausting the smoke removed with the water mist particles out of the smoke machine body (1).

4. The cleaning-free range hood according to claim 3, wherein a first vent hole (311) is formed in a tangential direction of a peripheral surface of the outer shell (31), and the second airflow channel (35) is communicated with the smoke exhaust pipe (11) through the first vent hole (311).

5. The no-clean range hood according to claim 4, characterized in that the no-clean range hood further comprises an annular cover plate (4) and a first air flow channel (5);

the outer shell (31) is arranged in the smoke exhaust pipe (11) to form an annular first air flow channel (5); the annular cover plate (4) is sleeved on the smoke exhaust and demisting component (3) and is used for sealing the first air flow channel (5); the first air flow passage (5) communicates with the second air flow passage (35) through the first vent hole (311).

6. A cleaning-free range hood according to claim 3, wherein the smoke evacuation defogging assembly (3) further comprises a movable baffle (33); a second vent hole (312) is formed in the bottom of the outer shell (31); the movable baffle (33) is installed on the outer shell (31) and used for opening or closing the second vent hole (312) according to the gravity of the collected condensed water of the water mist particles.

7. The cleaning-free range hood according to claim 6, wherein the movable baffle (33) comprises a baffle and an elastic member; one end of the elastic piece is connected with the outer shell (31), and the other end of the elastic piece is connected with the blocking piece and used for driving the blocking piece to open or close the second vent hole (312) according to the gravity of condensed water.

8. The no-clean range hood according to claim 4, wherein the first vent hole (311) is disposed at an upper portion of the second airflow channel (35).

9. The no-clean range hood according to claim 2, characterized in that the water mist generating unit (22) comprises a water mist spray pipe (221); the pipe wall of water smoke spray pipe (221) is equipped with a plurality of jet orifices (2211) and is used for spraying water smoke, water smoke spray pipe (221) with suction pump (21) are connected.

10. The no-clean range hood according to claim 9, characterized in that the spray holes (2211) are circumferentially arranged on the pipe wall of the water mist spray pipe (221).

11. The no-clean range hood of claim 9, wherein the water mist generating unit (22) further comprises a flow guide (222); the water suction pump (21) is communicated with a water inlet of the flow guide piece (222), and a water outlet of the flow guide piece (222) is communicated with the water mist spray pipe (221).

12. The no-clean range hood according to claim 11, wherein the flow guide member (222) comprises a first flow guide tube (2221), a second flow guide tube (2222) and a third flow guide tube (2223);

the water suction pump (21) is connected with a water inlet of the first guide pipe (2221), and two water outlets of the first guide pipe (2221) are respectively communicated with the second guide pipe (2222) and the third guide pipe (2223); the water mist spray pipe (221) is arranged between the second guide pipe (2222) and the third guide pipe (2223).

13. The no-clean range hood according to claim 12, wherein the water mist spray pipe (221) is installed at the smoke inlet of the machine shell (12) and above the oil net.

14. The no-clean range hood according to claim 12, wherein the number of the water mist spraying pipes (221) is at least two, and the water mist spraying pipes (221) are arranged between the second guiding pipe (2222) and the third guiding pipe (2223) at intervals.