CN210153889U

CN210153889U - Fume exhaust fan

Info

Publication number: CN210153889U
Application number: CN201920369239.4U
Authority: CN
Inventors: 杨星星; 方云超; 王宏宇; 黎本锋
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-21
Publication date: 2020-03-17
Anticipated expiration: 2029-03-21
Also published as: CN109945263A

Abstract

The utility model relates to the field of household appliances, and discloses a range hood, which comprises a fan component (100) and a fan cleaning component, wherein the fan cleaning component comprises a bubble generating device (1) for converting a flowing cleaning medium from a liquid state carrying gas into a foam state, and the fan cleaning component is used for spraying the cleaning medium in the foam state to the fan component (100); the fan cleaning assembly comprises an air supply pipeline (L1) and a liquid supply pipeline (L2) used for conveying the cleaning medium to the bubble generation device (1), and the air supply pipeline (L1) is connected to the liquid supply pipeline (L2) as a bypass pipeline. So set up, not only can make bubble generating device (1) is right fan subassembly (100) have the effect of comparatively ideal greasy dirt of getting rid of, but also can effectively reduce and wash the dead angle, and the homoenergetic can give the better use experience of user.

Description

Fume exhaust fan

Technical Field

The utility model belongs to the domestic appliance field specifically, relates to a lampblack absorber.

Background

With the continuous progress of science and technology and the continuous improvement of the living standard of people, the range hood is more and more popularized. The range hood, also known as a range hood, is installed above a kitchen range to rapidly remove wastes burned by the range and oil smoke harmful to human bodies generated in the cooking process, and then is discharged outdoors through a flue, thereby having the functions of removing the oil smoke and purifying the air in the kitchen.

After the range hood is used for a long time, oil stains in oil smoke can be accumulated and solidified in the fan assembly in a large amount, and particularly the impeller surface and the inner wall of the volute of the fan assembly cause the performance of the range hood to be reduced, so that when the range hood is operated, large operation noise can be generated, and the range hood can have large energy consumption. In addition, a large amount of oil dirt is accumulated in the fan assembly for a long time, and bacteria and mold are easily generated to pollute the kitchen environment.

When a fan assembly in a range hood needs to be cleaned, a conventional means adopted in the market at present is hot water cleaning, namely hot water is sprayed towards the fan assembly, but the temperature of the sprayed hot water is usually not high, so that the oil stain removing effect of the hot water is not ideal. Meanwhile, the coverage area of hot water spraying for flushing is small, the flow rate of hot water is large for enabling the hot water to have good impact force on oil stains, therefore, in the process of hot water cleaning, cleaning dead corners are easy to exist, a large amount of hot water waste can be caused, and bad use experience can be brought to users.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned not enough or defect among the prior art, the utility model provides a lampblack absorber, fan cleaning assembly in this lampblack absorber have better cleaning performance to the greasy dirt of gathering on the fan subassembly, can give the better use experience of user.

In order to achieve the above object, the utility model provides a range hood, this range hood include fan subassembly and fan washing subassembly, wherein, the fan washs the subassembly including being used for converting the cleaning medium who flows through from smuggleing the gaseous fluid state secretly to the bubble generating device of foam state, the fan wash the subassembly be used for to the fan subassembly sprays foam state cleaning medium.

Optionally, the blower cleaning assembly includes an air supply line and a liquid supply line for supplying the cleaning medium to the bubble generating device, and the air supply line is connected to the liquid supply line as a bypass line.

Optionally, a three-way pipe is arranged on the liquid supply pipeline, two inlet ends of the three-way pipe are respectively connected with the liquid supply pipeline and the air supply pipeline, a liquid pump is arranged in the liquid supply pipeline on the upstream of the three-way pipe, and an air pump is arranged on the air supply pipeline.

Optionally, the bubble generation device comprises a device inlet, a device outlet, and a bubble generation cavity connecting the device inlet and the device outlet, and the bubble generation device further comprises a foaming piece located in the bubble generation cavity, wherein the device inlet is connected with the outlet end pipeline of the three-way pipe.

Optionally, the foam diameter of the cleaning medium in the foam state generated by the foaming member is not less than 0.1mm and not more than 5 mm.

Optionally, the bubble generating chamber is cylindrical or prismatic, and the device inlet and the device outlet are respectively arranged at two axial ends of the bubble generating chamber; wherein, the foaming piece is a sponge piece, or the foaming piece is a porous piece formed by overlapping 1 layer, 2 layers or multiple layers of filter screens.

Optionally, the blower cleaning assembly comprises a foam nozzle connected to the device outlet pipeline of the bubble generation device; or the device outlet of the bubble generation device is used as a foam nozzle to spray the cleaning medium to the fan assembly.

Optionally, the fan assembly comprises a volute and an impeller mounted in the volute, and the foam nozzle sprays the cleaning medium towards the impeller to drive the impeller to rotate at a low speed.

Optionally, the range hood comprises a controller configured to: receiving a cleaning signal, and controlling to start the liquid pump and the air pump simultaneously; after the starting time of the liquid pump and the air pump reaches the preset starting time, controlling to simultaneously stop the liquid pump and the air pump; and after the shutdown time of the liquid pump and the air pump reaches the preset shutdown time, controlling and starting an impeller motor to drive the impeller to rotate at a high speed.

Optionally, the fan assembly includes a volute and an impeller installed in the volute, a nozzle guide rail concentrically arranged with the volute is disposed on an inner circumferential wall of the volute, and the foam nozzle is driven by a nozzle driving motor to move circumferentially along the nozzle guide rail so as to spray the inner circumferential wall of the volute all around.

Through the technical scheme, the utility model discloses an in the lampblack absorber, the lampblack absorber includes fan subassembly and fan washing subassembly, the fan washs the subassembly including being used for converting the cleaning medium who flows through to the bubble generating device of foam state from smuggleing gaseous fluid state secretly, and the fan washs the cleaning medium that the subassembly is used for spraying foam state to the fan subassembly, so set up, can improve the dwell time of cleaning medium on the fan subassembly through the viscidity of foam, thereby the contact time of extension cleaning medium and greasy dirt, make the softening that the cleaning medium can be better dissolve the greasy dirt of gathering on the fan subassembly, make the fan wash the subassembly and have the effect of comparatively ideal greasy dirt of getting rid of, be favorable to promoting user's use and experience.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a fan cleaning assembly cleaning fan assembly according to a first embodiment of the present invention;

FIG. 2 is a schematic view of a fan cleaning assembly cleaning fan assembly according to a second embodiment of the present invention;

fig. 3 is an overall sectional view of the bubble generating device of fig. 1.

Description of reference numerals:

100 blower assembly 101 volute

200 liquid supply box 300 oil box

1 bubble generating device 2 three-way pipe

3 liquid pump 4 air pump

5 foam nozzle

11 device inlet 12 device outlet

13 blister

L2 liquid supply pipeline of L1 liquid supply pipeline

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The utility model provides a range hood, refer to fig. 1 and fig. 2, the range hood includes fan subassembly 100 and fan washing subassembly, and wherein, the fan washs the subassembly including being used for converting the cleaning medium that flows through from smuggleing bubble generating device 1 that has gaseous fluid state to foam state secretly, and the fan washs the cleaning medium that the subassembly is used for spraying foam state to fan subassembly 100.

The utility model discloses in, the fan washs the cleaning medium that the subassembly not only can produce foam state, but also can spray this foam state's cleaning medium to fan subassembly 100, so, the cleaning medium that the spraying has foam state on the surface that can make the greasy dirt gather in fan subassembly 100, and because the viscidity of foam can improve the dwell time of cleaning medium on fan subassembly 100, thereby the contact time of cleaning medium and greasy dirt has been prolonged, make the greasy dirt of gathering on fan subassembly 100 can be dissolved by comparatively abundant softening, and then make the fan wash the subassembly and have the effect of comparatively ideal greasy dirt removal to fan subassembly 100, can promote user's use experience by a wide margin. In addition, because it has comparatively slow mobility of foam, make the cleaning medium of foam state can follow fan subassembly 100 and flow slowly to the surface that fan subassembly 100 was not sprayed by fan washing subassembly in by the surface that the fan subassembly was sprayed, and like this, the fan has been enlarged and has been washd the subassembly and to the washing region of fan subassembly 100, can effectively reduce and wash the dead angle, be favorable to promoting the cleaning efficiency that the fan washed the subassembly, and also can reduce the use amount of cleaning medium by a wide margin, the homoenergetic gives the better use experience of user.

Further, bubble generating device 1 can convert the cleaning medium that flows through into the foam state from the liquid state that has gaseous secretly, so, compare in gaseous and cleaning medium together flow into bubble generating device 1 and then produce the foam, mix gaseous earlier in cleaning medium back rethread bubble generating device 1 in this technical scheme, not only can control the gas content that contains in the cleaning medium of liquid state comparatively accurately, but also make gaseous distribute comparatively evenly in the cleaning medium of liquid state, when making bubble generating device 1 have better operation reproducibility, can also effectively improve the foam content in the cleaning medium from bubble generating device 1 outflow, also can reduce the use amount of cleaning medium, all be favorable to further promoting user's use experience.

Specifically, after the cleaning medium passes through the bubble generation device 1, all of the cleaning medium may be switched from the liquid state to the foam state, or a part of the cleaning medium may be switched from the liquid state to the foam state, but is not limited thereto.

To facilitate entrainment of gas in the cleaning medium in the liquid state, and with reference to fig. 1 and 2, the blower cleaning assembly preferably includes an air supply line L1 and a liquid supply line L2 for supplying cleaning medium to the bubble generating device 1, the air supply line L1 being connected as a bypass line to the liquid supply line L2.

Further, with continued reference to fig. 1 and fig. 2, a three-way pipe 2 is disposed on the liquid supply pipeline L2, two inlet ends of the three-way pipe 2 are respectively connected to the liquid supply pipeline L2 and the air supply pipeline L1, a liquid pump 3 is disposed in the liquid supply pipeline L2 at the upstream of the three-way pipe 2, and the air supply pipeline L1 is provided with an air pump 4, so that the liquid pump 3 and the air pump 4 can respectively drive the fluid in the liquid supply pipeline L2 and the air supply pipeline L1 to flow toward the three-way pipe 2. In addition, compare in arranging liquid pump 3 in the liquid feed pipeline L2 of tee pipe 2 low reaches, arrange liquid pump 3 in the liquid feed pipeline L2 of tee pipe 2 upper reaches in this technical scheme, can avoid coming from the gas of gas feed pipeline L1 to produce the damage to liquid pump 3, and then influence liquid pump 3 and even the operational reliability and the life of lampblack absorber.

Preferably, the bubble generating device 1 comprises a device inlet 11, a device outlet 12 and a bubble generating chamber connecting the device inlet 11 and the device outlet 12, the bubble generating device 1 further comprises a foaming member 13 located in the bubble generating chamber, the device inlet 11 is connected with an outlet end pipeline of the three-way pipe 2, referring to fig. 1 to 3, so that the cleaning medium in a liquid state with entrained gas flows into the bubble generating device 1 from the device inlet 11, and then the cleaning medium is gradually converted into a foam state from the liquid state in the bubble generating chamber under the action of the foaming member 13 and finally flows out of the bubble generating device 1 through the device outlet 12.

Specifically, the foaming member 13 may be a stirring member, i.e., a member that forms foam by stirring, and the foaming member 13 may also be a porous member, i.e., a member that forms foam by blowing, although the foaming member 13 may also be of other suitable types, which are not illustrated herein. In order to generate a larger amount of foam and to be more dense, the foaming member 13 is preferably a porous member.

Preferably, the bubble generating chamber is cylindrical or prismatic and is provided with a device inlet 11 and a device outlet 12 at two axial ends respectively; wherein, the foaming piece 13 is a sponge piece, or the foaming piece 13 is a porous piece formed by overlapping 1 layer, 2 layers or multiple layers of filter screens, etc.

In addition, the foam diameter of the cleaning medium in the foam state generated by the foaming member 13 should be not more than 5mm, so that the foam has good adhesion and is not easy to fall off the fan assembly 100. Further, the diameter of the foam of the cleaning medium in the foam state generated by the foaming member 13 should be not less than 0.1mm, so when the foaming member 13 is a porous member, the smaller the diameter of the foam generated by the bubble generating device 1 is, the smaller the corresponding pore size in the porous member is, and the more easily blocked, and further the service life is affected, and when the foaming member 13 is a stirring member, in order to make the foam generated by the bubble generating device 1 have a smaller diameter, the stirring speed of the stirring member is often required to be greatly increased, and a larger operation noise is generated, and the descriptions of the types of the other foaming members 13 are omitted.

Specifically, the fan cleaning assembly sprays cleaning medium through foam nozzles 5 toward fan assembly 100. The foam nozzle 5 may be an independent pipe connected to the device outlet 12 of the bubble generating device 1 through a pipeline in a fan cleaning assembly (for example, as shown in fig. 1, the fan cleaning assembly includes the foam nozzle 5 connected to the device outlet 12 of the bubble generating device 1 through a pipeline), or may be the device outlet 12 of the bubble generating device 1 (that is, the device outlet 12 of the bubble generating device 1 is used as the foam nozzle 5, refer to fig. 2), but is not limited thereto.

Preferably, the fan assembly 100 includes a volute 101 and an impeller installed in the volute 101, and the foam nozzle 5 is configured to spray a cleaning medium toward the impeller to drive the impeller to rotate at a low speed, so that when the foam nozzle 5 sprays the cleaning medium, the cleaning medium impacts the impeller to cause the impeller to rotate, thereby enabling the cleaning medium to spray the entire impeller. In order to avoid the over-high rotation speed of the impeller, the cleaning medium sprayed on the surface of the impeller is thrown out (e.g. onto the inner wall of volute 101), and the impeller should rotate at a low speed, for example, the rotation speed of the impeller is not greater than 100 rpm, but not limited thereto. Of course, in order to make each blade on the impeller capable of spraying the cleaning medium in the foam state, a nozzle guide rail concentrically arranged with the volute 101 may be further provided on the inner circumferential wall of the volute 101, and the foam nozzle 5 is driven by the nozzle driving motor to move circumferentially along the nozzle guide rail so as to spray the inner circumferential wall of the volute 101 over the entire circumference. The number, orientation, shape, size, etc. of the ejection openings for ejecting the cleaning medium in the foam ejection head 5 may be determined according to actual process requirements, and are not particularly limited herein.

Further, the range hood includes a controller configured to: receiving a cleaning signal, and controlling to start the liquid pump 3 and the air pump 4 at the same time; after the starting time of the liquid pump 3 and the air pump 4 reaches the preset starting time, controlling to simultaneously shut down the liquid pump 3 and the air pump 4; and after the shutdown time of the liquid pump 3 and the air pump 4 reaches the preset shutdown time, controlling to start the impeller motor to drive the impeller to rotate at a high speed. With the arrangement, when the controller receives the cleaning signal, the liquid pump 3 and the air pump 4 can drive the liquid supply pipeline L2 and the air supply pipeline L1 to simultaneously supply fluid to the three-way pipe 2, so that the cleaning medium in the liquid supply pipeline L2 between the three-way pipe 2 and the bubble generating device 1 is entrained with air; when the starting time of the liquid pump 3 and the air pump 4 reaches the preset starting time, the impeller is considered to be sprayed with the cleaning medium in a foam state, and the liquid pump 3 and the air pump 4 can be shut down; when the shutdown time of the liquid pump 3 and the air pump 4 reaches the preset shutdown time, the cleaning medium has a better softening and dissolving effect on the oil stains accumulated on the fan assembly 100, the impeller can be driven to rotate at a high speed, the cleaning medium (with foam) attached to the impeller originally can be thrown to the inner wall of the volute 101, the cleaning medium in a foam state can be promoted to continue to soften and dissolve the oil stains accumulated on the inner wall of the volute 101, and then the fan cleaning assembly has a better oil stain removing effect on the fan assembly 100. The high-speed rotation of the impeller is relative to the low-speed rotation of the impeller, that is, the speed of the impeller in the high-speed rotation is higher than that of the impeller in the low-speed rotation, and in order to enable the unbroken foam on the impeller to be thrown off the surface of the impeller, the speed of the impeller in the high-speed rotation is not less than 300 revolutions per minute.

Specifically, the cleaning signal may be triggered by a user manually pressing an external button, or may be automatically triggered when a timing device in the range hood detects that the operation time of the range hood reaches a certain time limit (e.g., 3 months, half a year, etc.), which is not illustrated here. In addition, in order to make the surface of the impeller sprayed with the cleaning medium in a foam state, the preset start time should not be set too small, for example, the preset start time should not be less than 30 seconds, 1 minute, or the like, without being limited thereto. Meanwhile, the preset shutdown time can be set to be 3-8 minutes, and particularly, the preset shutdown time is preferably in the range, so that the cleaning medium in a foam state has a good softening and dissolving effect on oil stains on the impeller, the waiting time of a client is appropriate, and better use experience can be provided for the user.

In addition, the lampblack absorber includes oil box 300, the internal perisporium bottom of spiral case 101 is equipped with the spiral case export that is linked together with oil box 300, the liquid that drips from the inner wall of impeller and/or spiral case can assemble in spiral case 101's internal perisporium bottom, then flows to oil box 300 through the spiral case export, like this, treat the washing back that finishes, do not need the manual lampblack absorber of opening in order to clear away the liquid and the greasy dirt impurity that deposit in spiral case 101's internal perisporium bottom, and only need to wash oil box 300 can, be convenient for user's operation. In addition, a liquid supply box 200 connected to the liquid supply line L2 may be provided in the range hood, and a cleaning medium may be loaded in the liquid supply box 200, so that the cleaning medium in the liquid supply box 200 may be delivered to the bubble generating apparatus 1 through the liquid supply line L2. Of course, in order to make the range hood compact and small in structure, this liquid supply box 200 may also be external, that is, when the fan assembly 100 needs to be cleaned, the inlet end of the liquid supply pipeline L2 arranged in the range hood is taken out, and then put into the external liquid supply box 200, so as to supply the cleaning medium to the bubble generating device 1.

It should be particularly noted that other configurations and functions of the range hood according to the embodiment of the present invention are known to those skilled in the art, and are not described herein in detail to reduce redundancy.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. The utility model provides a range hood, includes fan subassembly (100) and fan washing subassembly, its characterized in that, fan washing subassembly is including being used for converting the cleaning medium who flows through from smuggleing bubble generating device (1) that has gaseous liquid state to foam state secretly, fan washing subassembly be used for to fan subassembly (100) injection foam state cleaning medium.

2. A hood according to claim 1, characterized in that said fan cleaning assembly comprises an air supply line (L1) and a liquid supply line (L2) for conveying said cleaning medium to said bubble generating device (1), said air supply line (L1) being connected as a by-pass line to said liquid supply line (L2).

3. A range hood as claimed in claim 2, characterized in that a three-way pipe (2) is arranged on the liquid supply pipeline (L2), two inlet ends of the three-way pipe (2) are respectively connected with the liquid supply pipeline (L2) and the air supply pipeline (L1), a liquid pump (3) is arranged in the liquid supply pipeline (L2) at the upstream of the three-way pipe (2), and an air pump (4) is arranged in the air supply pipeline (L1).

4. A range hood according to claim 3, characterized in that the air bubble generating device (1) comprises a device inlet (11), a device outlet (12) and an air bubble generating chamber connecting the device inlet (11) and the device outlet (12), the air bubble generating device (1) further comprises a foaming piece (13) located in the air bubble generating chamber, the device inlet (11) is connected with the outlet end pipe of the three-way pipe (2).

5. A hood according to claim 4, characterized in that said cleaning medium in the foam state generated by said foaming element (13) has a foam diameter not less than 0.1mm and not more than 5 mm.

6. A range hood, according to claim 4, characterized in that said bubble generating chamber is cylindrical or prismatic and axially provided at both ends with said device inlet (11) and said device outlet (12), respectively;

wherein, the foaming piece (13) is a sponge piece, or the foaming piece (13) is a porous piece formed by overlapping 1 layer, 2 layers or multiple layers of filter screens.

7. A range hood as claimed in any one of claims 4 to 6, characterized in that the fan cleaning assembly comprises a foam nozzle (5) in line connection with the device outlet (12) of the bubble generating device (1); or the device outlet (12) of the bubble generation device (1) is used as a foam nozzle (5) to spray the cleaning medium to the fan assembly (100).

8. A range hood according to claim 7, characterized in that the fan assembly (100) comprises a volute (101) and an impeller mounted inside the volute (101), the foam nozzle (5) spraying the cleaning medium towards the impeller to drive the impeller to rotate at a low speed.

9. The range hood of claim 8, wherein the range hood comprises a controller configured to:

receiving a cleaning signal, and controlling to start the liquid pump (3) and the air pump (4) simultaneously;

after the starting time of the liquid pump (3) and the air pump (4) reaches the preset starting time, controlling to simultaneously stop the liquid pump (3) and the air pump (4);

and after the shutdown time of the liquid pump (3) and the air pump (4) reaches the preset shutdown time, controlling and starting an impeller motor to drive the impeller to rotate at a high speed.

10. The range hood according to claim 7, wherein the fan assembly (100) comprises a volute (101) and an impeller installed in the volute (101), a nozzle guide rail concentrically arranged with the volute (101) is arranged on the inner peripheral wall of the volute (101), and the foam nozzle (5) is driven by a nozzle driving motor to move circumferentially along the nozzle guide rail so as to spray the inner peripheral wall of the volute (101) in a whole circle.