CN111351094B

CN111351094B - Range hood, cleaning device and method thereof and storage medium

Info

Publication number: CN111351094B
Application number: CN202010352275.7A
Authority: CN
Inventors: 王宏宇; 马庆阳; 郭福
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2022-08-05
Anticipated expiration: 2040-04-28
Also published as: CN111351094A

Abstract

The embodiment of the invention discloses a cleaning device for a range hood, which belongs to the technical field of household appliances, the range hood comprises a fan device, the fan device comprises a volute, an impeller positioned in the volute and a driving motor used for driving the impeller to rotate, and the cleaning device comprises: a steam generator configured to supply a steam cleaning medium; the spray pipe assembly is communicated with the steam generator and is used for introducing a steam cleaning medium from the steam generator so as to clean a to-be-cleaned area of the fan device; the spray pipe assembly comprises at least two spray pipes, and the spray pipes are respectively arranged at least two areas to be cleaned of the fan device; a processor configured to: the spraying pipe is controlled to spray steam cleaning medium in different areas, the areas which are difficult to clean in the areas to be cleaned are cleaned firstly, and the areas which are easy to clean are cleaned later.

Description

Range hood, cleaning device and method thereof and storage medium

Technical Field

The invention relates to the technical field of household appliances, in particular to a range hood, a cleaning device, a cleaning method and a storage medium thereof.

Background

Range hood makes the greasy dirt adsorb in its runner under the effect of fan device extraction greasy dirt in the use, leads to the cigarette machine windage to increase, and range hood's greasy dirt can influence the user and cook the experience and the culinary art state of using the product in the culinary art process. In the related art, one method commonly used by cigarette makers for internal washing is to spray a washing medium into an area to be washed using a spray pipe, and the following disadvantages are common to such methods: after the cleaning mode is designed by a designer, the spray pipe only adopts a fixed and rigid mode to treat the cleaning area, but the cleaning effect is poor easily due to the uncertainty of the oil stain attachment position.

Disclosure of Invention

In order to solve the above problems, an embodiment of the present invention provides a range hood, a cleaning device, a cleaning method, and a storage medium, which are configured on the range hood to perform automatic cleaning on the range hood with better effect.

In order to achieve the above object, the present application provides a cleaning device for a range hood, the range hood including a fan device, the fan device including a volute, an impeller located in the volute, and a driving motor for driving the impeller to rotate, the cleaning device including: a steam generator configured to supply a steam cleaning medium; the spray pipe assembly is communicated with the steam generator and is used for introducing a steam cleaning medium from the steam generator so as to clean a to-be-cleaned area of the fan device; the spray pipe assembly comprises at least two spray pipes which are respectively arranged at least two areas to be cleaned of the fan device; a processor configured to: and controlling the spray pipe assembly to spray steam cleaning medium in different areas so as to preferentially clean the difficult-to-clean area in the difficult-to-clean area and the easy-to-clean area of the at least two areas to be cleaned.

In an embodiment of the present application, the cleaning apparatus further includes: the fan device is fixedly connected to the rack top plate; the monitor is arranged on one surface of the top plate of the rack, which corresponds to the rear end of the volute; the monitor comprises a data interface and an optical assembly, wherein the optical assembly is arranged towards the inside of the volute so as to detect the rotation state of the impeller; wherein, the rotation state of the impeller comprises at least one of the rotation speed and the rotation direction.

In the embodiment of the application, the areas to be cleaned are the front air inlet end and the rear air inlet end of the fan device, the area which is difficult to clean is the front air inlet end, and the area which is easy to clean is the rear air inlet end; the at least two spray pipes comprise a front spray pipe and a rear spray pipe, the front spray pipe extends into the volute cavity from the front air inlet end of the fan device, and the rear spray pipe extends into the volute cavity from the rear air inlet end of the fan device.

In the embodiment of the application, the optical assembly faces one end of the front air opening of the volute and is arranged with a surface depression.

In an embodiment of the present application, the nozzle assembly further comprises: the front spray pipe control valve is used for controlling the front spray pipe to spray steam cleaning medium; and the rear spray pipe control valve is used for controlling the rear spray pipe to spray the steam cleaning medium.

In an embodiment of the application, the processor is configured to: after the preferential cleaning of the less washable area is performed, all the areas to be cleaned are cleaned again simultaneously.

In an embodiment of the application, the processor is further configured to: in washing difficult washing region, washing easy washing region to and wash all every stages of treating the washing region simultaneously, control driving motor drive impeller and follow first direction intermittent type nature and rotate, wherein, control driving motor drive impeller and follow first direction intermittent type nature and rotate and include: in each rotation period, controlling the driving motor to drive the impeller to rotate for a first preset time or reaching a first preset rotation speed, and controlling the driving motor to stop driving the impeller so as to enable the impeller to continue to rotate along a first direction under inertia; and after the impeller stops rotating for a second preset time, controlling the driving motor to drive the impeller to rotate again.

In an embodiment of the application, the processor is further configured to: before the control spray pipe sprays steam cleaning medium in different areas, acquiring an image of an area to be cleaned; determining the surface cleanliness of the area to be cleaned according to the image; determining a hard cleaning area and a easy cleaning area according to the surface cleanliness

In the embodiment of the application, when the spray pipe sprays the steam cleaning medium to clean the fan device, the direction of the spray pipe spraying the steam cleaning medium and the rotation of the impeller are opposite.

In a second aspect of the present application, there is also provided a range hood, including the cleaning device for a range hood as described above.

In a third aspect of the present application, there is further provided a cleaning method for a range hood, the range hood including a fan device and a cleaning device, the fan device including a volute, an impeller located in the volute, and a driving motor for driving the impeller to rotate, the cleaning device including a steam generator configured to supply a steam cleaning medium; the spray pipe assembly is communicated with the steam generator and is used for introducing a steam cleaning medium from the steam generator so as to clean a to-be-cleaned area of the fan device; the spray pipe assembly comprises at least two spray pipes, and the spray pipes are respectively arranged at least two areas to be cleaned of the fan device; the cleaning method comprises the following steps: the control spray pipe sprays steam cleaning medium in different areas so as to preferentially clean the difficult-to-clean area in the difficult-to-clean area and the easy-to-clean area of at least two areas to be cleaned.

In the embodiment of the application, before the spray pipe is controlled to spray the steam cleaning medium in different areas, the image of the area to be cleaned is obtained; determining the surface cleanliness of the area to be cleaned according to the image; and determining a difficult cleaning area and an easy cleaning area according to the surface cleanliness.

In this application embodiment, treat that the washing region is preceding wind gap end and back wind gap end of fan device, the difficult washing region is one of them in preceding wind gap end and the back wind gap end, and the easy washing region is another.

In an embodiment of the present application, the cleaning method further includes: after the preferential cleaning of the less washable area is performed, all the areas to be cleaned are cleaned again simultaneously. The cleaning method further comprises the following steps: in each stage of cleaning a region which is difficult to clean, cleaning a region which is easy to clean and cleaning all regions to be cleaned simultaneously, controlling a driving motor to drive an impeller to intermittently rotate along a first direction; wherein controlling the drive motor to drive the impeller to intermittently rotate in a first direction comprises: in each rotation period, controlling the driving motor to drive the impeller to rotate for a first preset time or reaching a second preset rotation speed, and controlling the driving motor to stop driving the impeller so as to enable the impeller to continue to rotate along the first direction under inertia; and after the impeller stops rotating for a second preset time, controlling the driving motor to drive the impeller to rotate again.

In a fourth aspect of the present application, there is also provided a machine-readable storage medium having stored thereon instructions for enabling a processor to execute the cleaning method of the range hood according to the above when the instructions are executed by the processor.

Through the technical scheme, for range hood's belt cleaning device, the maximum rated power of external force pump and water pump is fixed, the pressure that also is steam cleaning medium and the maximum value of throughput are invariable, treat the cleaning zone according to traditional cleaning mode in the past and wash, if invariable rivers of water pressure are invariable, lead to the unclean phenomenon of partial region washing very easily, through the aforesaid, can concentrate steam flow and pressure and wash the regional key earlier of difficult cleaning, the greasy dirt in difficult cleaning zone is washed clean back by the scour, concentrate again and wash the easy cleaning zone, at last all wash simultaneously, greatly improve abluent quality.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments 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 embodiments of the invention without limiting the embodiments of the invention. In the drawings:

fig. 1 is a schematic structural diagram of a cleaning device for a range hood according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a cleaning device for a range hood according to another state provided in the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a part of a cleaning device for a range hood according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a monitor in a cleaning device for a range hood according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a cleaning device for a range hood according to a second viewing angle provided in the embodiment of the present invention;

fig. 6 is an enlarged schematic structural view of a cleaning device of a range hood provided in the embodiment of the present invention at a position a in fig. 5;

fig. 7 is another structural diagram of a nozzle assembly in a cleaning device of a range hood according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a nozzle assembly in a cleaning device of a range hood according to an embodiment of the present invention from a first viewing angle;

fig. 9 is a schematic structural diagram of a cleaning device of a range hood provided in an embodiment of the present invention at a third viewing angle;

fig. 10 is a schematic structural diagram of a fourth viewing angle of the cleaning device of the range hood provided in the embodiment of the present invention;

fig. 11 is a schematic structural diagram of a spray pipe in the cleaning device of the extractor hood provided by the embodiment of the invention;

fig. 12 is an enlarged schematic view of a part of the structure of the cleaning device of the range hood provided in the embodiment of the present invention;

fig. 13 is a graph showing the relationship between time and speed when a processor operates in the cleaning device for the extractor hood according to the embodiment of the present invention; and

fig. 14 is a flowchart of one step in the cleaning method for the range hood according to the embodiment of the present invention.

Description of the reference numerals

100. A cleaning device; 200. fan device

300. A rack top plate; 11. A steam generator;

12. a spout assembly; 13. Mounting a bracket;

14. a monitor; 21. A volute;

22. an impeller;

111. an inlet end; 112. A steam outlet end;

121. a front nozzle; 122. A rear nozzle;

123. a three-way pipe; 124. A front nozzle control valve;

125. the rear spray pipe controls a valve; 126. The spray pipe extends into the end;

1261. axially spraying holes; 1262. Circumferentially spraying holes;

141. an optical component; 142. A data interface;

31. a transverse plate; 32. A vertical plate;

F. a front tuyere end; b. And a rear air inlet end.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.

It will be understood that when an original is referred to as being fixed to another original, it can be directly on the one element or there can be an intervening document. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper," "lower," "left," "right," and similar directional terms are used herein for illustrative purposes only.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a cleaning device for a range hood according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of the cleaning device for a range hood according to an embodiment of the present invention in another state; the range hood comprises a fan device 200, wherein the fan device 200 is used for rapidly pumping away oil smoke generated in the cooking process, so that the function of purifying the kitchen environment is realized. The cleaning device 100 of the present invention is intended to clean the blower device 200.

Specifically, the cleaning device 100 of the range hood provided by the embodiment of the present invention includes:

a steam generator 11 for supplying a steam cleaning medium;

and the spray pipe assembly 12, the spray pipe assembly 12 is communicated with the steam generator 11 and is used for spraying the steam cleaning medium supplied by the steam generator 11 onto the fan device 200 so as to clean the area to be cleaned of the fan device 200. In particular, the nozzle assembly 12 comprises at least two nozzles, which are respectively arranged at least two areas to be cleaned of the fan arrangement 200.

A processor (not shown), the processor configured to: to preferentially clean the less-washable area in a less-washable area and a easier-to-clean area of the at least two areas to be cleaned. In brief, the spray pipes are controlled to spray the cleaning medium in different areas, the areas which are difficult to clean in the areas to be cleaned are cleaned firstly, and then the areas which are easy to clean are cleaned.

The processor is configured to: and after the region difficult to clean and the region easy to clean are respectively cleaned, cleaning the region to be cleaned simultaneously.

It can be understood that, as a general inventive concept, the present application mainly uses a processor to control a spray pipe, and to determine how easy to clean a region to be cleaned, the region to be cleaned is cleaned in a zone-by-zone manner, and in short, which region to be cleaned is difficult to clean is preferably cleaned, and the manner mainly aims at: to range hood's belt cleaning device 100, the maximum rated power of external force pump and water pump is fixed, the pressure that also is steam cleaning medium and the maximum value of throughput are invariable, the inventor of this application discovers, adopt single mode to treat the cleaning region according to traditional cleaning mode in the past and wash, if the invariable rivers of invariable water pressure, lead to the unclean phenomenon of partial region washing very easily, through above-mentioned mode, can concentrate steam flow and pressure to the first key washing of difficult cleaning region, the greasy dirt in difficult cleaning region is washed clean the back, concentrate again and wash easy cleaning region, last whole washing simultaneously, greatly improve abluent quality.

Thus, the present application mainly focuses on the structural features of the cleaning apparatus 100 and the logic control of the processor, and for the sake of understanding, the structural features of the cleaning apparatus 100 will be described first.

In the present embodiment, the overall profile of the fan apparatus 200 is not limited, and may alternatively be a volute shape. Generally, the fan device 200 may be an axial fan or a centrifugal fan, and may include a front air inlet unidirectional fan or a bidirectional air inlet bidirectional fan according to an operation mode, and the present embodiment is illustrated by an optional bidirectional air inlet bidirectional centrifugal fan. It should also be understood by those skilled in the art that the fan apparatus 200 provided in the present invention is exemplary only and is not intended to limit the cleaning device 100 in any way as to structure or type.

Thus, the term "area to be cleaned" in the present application is defined as the front tuyere end F and the rear tuyere end B of the fan apparatus 200 on the basis of the bidirectional centrifugal fan that employs bidirectional intake air based on the fan apparatus 200. The difficult cleaning area is one of the front tuyere end F and the rear tuyere end B, and the easy cleaning area is the other; for example, generally speaking, the front air inlet F is closer to the cooking bench, and therefore, compared with the rear air inlet B, the front air inlet F is a region difficult to clean, but according to different types of oil smoke generated by the cooking bench, the rear air inlet B is more difficult to clean than the front air inlet F, and the specific difficulty is determined according to the environment where the fan device of the range hood is used.

It is understood that the definitions of "front" and "rear" in the embodiments of the present invention are: taking any surface of the fan device 200 as a "front" side, and taking the other surface opposite to the surface as a "rear" side, that is, the front air inlet end and the rear air inlet end can be regarded as two sides opposite to the fan device 200; it is to be understood that the terms "front" and "rear" in the embodiments of the present invention are used merely for convenience of description and are not intended to limit the front and rear portions to any specific orientation.

In some embodiments of the present invention, which may be modified, a unidirectional blower with front air intake may also be used for illustration, and also fall within the protection scope covered by the present invention.

The fan device 200 operates in the following manner: the blower device 200 includes a volute 21, an impeller 22 disposed in the volute 21, and a driving motor (not labeled) for driving the impeller to rotate, when the impeller 22 rotates under the action of the driving motor, the airflow enters the impeller 22 of the blower device 200 respectively in the front and back axial directions, and at the same time, the airflow mainly flows in the radial direction, so as to be discharged from an air outlet (not labeled) on the upper side of the blower device 200.

In the embodiment of the present invention, the steam generator 11 is disposed on the upper side of the fan device 200 and is fixedly connected to the fan device 200, specifically, the range hood includes a rack top plate 300, the rack top plate 300 is a top structure of a housing for protecting the fan device 200, and the steam generator 11 is fixedly connected to the rack top plate 300 of the range hood and is connected to the lower volute 21 through the spray pipe assembly 12, so that the rack top plate 300, the fan device 200, the steam generator 11, and the spray pipe assembly 12 are connected into a whole. The advantage of this mode is that, through frame roof 300 as the accepting of steam generator 11 and fan device 200, steam generator 11 is through connecting spray tube subassembly 12 simultaneously, and the cleaning medium that produces steam generator 11 transmits fan device 200 department to wash fan device 200, this mode is through having saved range hood's inner space for range hood can reduce the size, thereby more exquisite. Meanwhile, since the steam generator 11 is located at the upper side, the steam cleaning medium enters the nozzle assembly 12 from the top to the bottom, which is beneficial to the circulation of the steam cleaning medium.

In some embodiments, the steam generator 11 and the fan device 200 may be directly integrated into a single body, and the invention also falls into the protection scope of the present invention.

Similarly, the specific connection mode of the steam generator 11 and the rack top plate is not limited, and may be one of a screw connection and a clamping connection, and only the steam generator 11 needs to provide and introduce the steam cleaning medium to the nozzle assembly 12. For the steam generator 11, according to the working characteristics of the steam generator 11, the steam generator 11 is configured to heat a cleaning medium, such as water or a liquid added with a cleaning liquid, to generate a hot cleaning medium, such as a hot steam cleaning medium, and after the hot steam cleaning medium is sprayed onto the volute 21 and the impeller 22 through the spray pipe assembly 12, due to the characteristics of the hot steam cleaning medium, the fluidity of the oil stain is enhanced by heating, and then the steam cleaning medium is further driven to flow by the rotation of the impeller 22, so that the steam cleaning medium is diffused to the impeller 22 and the volute 21 to mix the oil stain thereon, and the oil stain is discharged to the air port by radial air suction along with the rotation of the impeller 22 of the fan device 200, and is separated from the body of the range hood.

For the cleaning device 100 provided by the embodiment of the present invention only as an example of the cleaning method, the steam generator 11 may be replaced by other mechanisms to provide other types of cleaning media; the form of the cleaning medium is not limited; and may be in liquid or solid form, such as fluid, foam, steam, and may contain any type of media, including, but not limited to, water, detergent-added fluid, and the like.

Referring to fig. 2 and 3, fig. 3 is a schematic partial structural view of a cleaning device for a range hood according to an embodiment of the present invention, a top plate 300 of a rack includes a horizontal plate 31 and a vertical plate 32, the horizontal plate 31 and the vertical plate 32 are L-shaped, a fan device leans against the top plate 300 of the rack to be fixedly connected to the horizontal plate 31 and the vertical plate 32, a steam generator 11 is further fixedly connected to an upper side of the horizontal plate 31, the horizontal plate 31 is provided with a through hole (not labeled), and the through hole is communicated with an air outlet of the fan device, so as to guide oil smoke sucked by the fan device out of the through hole.

In the embodiment of the present application, the cleaning device 100 further includes a monitor 14, the monitor 14 is disposed on a surface of the top plate 300 of the rack corresponding to the rear end of the volute 21; specifically, the monitor 14 is disposed at the center of the vertical plate 32 corresponding to the back surface of the volute 21, the monitor 14 monitors the rotation state of the impeller 22 from the rear gap of the volute 21 to determine the current rotation speed and direction, such as the state of the intermittent power-off and inertial rotation stages of the driving motor, the monitor 14 is disposed on the surface of the rack top plate 300 corresponding to the rear side of the volute 21, i.e., the back surface of the volute 21, which is usually the region with less oil smoke of the range hood, so as to facilitate the accuracy of the monitor 14 in measurement.

More specifically, referring to fig. 3 and 4, fig. 4 is a schematic structural diagram of a monitor in a cleaning device for a range hood according to an embodiment of the present invention, the monitor 14 includes an optical component 141 and a data interface 142, the optical component 141 is disposed toward the spiral casing 21 to detect a rotation state of the impeller 22, the rotation state includes at least one of a rotation speed and a rotation direction, the optical component 141 may be a photoelectric sensor, such as a slot-type photoelectric sensor, and obtains a rotation speed of the driving motor, i.e., a rotation speed of the impeller, by sending a pulse and a built-in timer, and then the data interface 142 is electrically connected to a processor to send the measured rotation speed and a rotation direction to the processor for processing. It is understood that the optical assembly 141 measures rotational speed as is common practice in the art and the present invention is not overly elaborated herein.

In the embodiment of the present invention, the optical assembly 141 faces one end of the front air opening of the scroll casing 21, and the surface of the optical assembly is recessed, so as to prevent oil stains from being adsorbed onto the optical assembly 141 when the blower device is in operation, thereby affecting the accuracy of measurement of the optical assembly 141, and improving the stability and durability of the cleaning device.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a second view angle of a cleaning device for a range hood according to an embodiment of the present invention, a source of a cleaning medium is from an external water pump (not shown) of the steam generator 11, the steam generator 11 includes an inlet end 111 and a steam outlet end 112, the inlet end 111 of the steam generator 11 is connected to the water pump, the steam outlet end 112 is connected to the nozzle assembly 12, the water pump provides the cleaning medium for the steam generator 11, the cleaning medium is heated by the steam generator 11, then is led out from the steam outlet end 112, and is sprayed onto the volute 21 and the impeller 22 through the nozzle assembly 12, so as to clean the volute 21 and the impeller 22. Therefore, when the cleaning device 100 provided by the present embodiment is used, after the cleaning medium is sprayed onto the impeller 22, the mechanical energy can be provided to the cleaning medium due to the rotation of the impeller 22, and the cleaning medium effectively washes the inner wall of the volute 21 and the impeller 22 under the agitation of the impeller 22.

Referring to fig. 6 and 7, fig. 6 is an enlarged schematic structural diagram of a cleaning device of a range hood provided in an embodiment of the present invention at a position a in fig. 5, fig. 7 is another structural diagram of a nozzle assembly in the cleaning device of the range hood provided in the embodiment of the present invention, and the nozzle assembly 12 is characterized as follows: the nozzle assembly 12 comprises at least two nozzles, optionally two nozzles, each of which includes a front nozzle 121 and a rear nozzle 122 at the end, the front nozzle 121 extends to one side of the impeller 22, and the rear nozzle 122 extends to the other side of the impeller 22 opposite to the front nozzle 121, so that the nozzle assembly surrounds the circumferential side of the volute 21; preceding spray tube 121 stretches into the spiral case 21 intracavity from the front wind gap end of spiral case 21, back spray tube 122 stretches into the spiral case 21 intracavity from the back wind gap end of spiral case 21, thereby the cleaning medium after steam generator 11 handles spouts respectively via preceding spray tube 121 and back spray tube 122, with the both sides to impeller 22, and the both sides of spiral case 21 inner wall are washed, through this type of mode, can wash the both sides of whole fan device 200, thereby guarantee abluent thorough degree, thereby prevent to shelter from the department, there is the unclean phenomenon in dead angle washing, in order to wash completely the preceding rear end to fan device 200.

The end of the spout assembly 12 is defined as: the nozzle assembly 12 is used for spraying one end of the impeller 22 with the cleaning medium, wherein the number of the steam outlet ends 112 of the steam generator 11 may be two or one:

as shown in fig. 6, when only one steam outlet end 112 of the steam generator 11 is provided, the nozzle assembly 12 includes a tee 123, and the tee 123 is disposed between the front nozzle 121 and the rear nozzle 122. The three-way pipe 123, the front spray pipe 121 and the rear spray pipe 122 are all conducted, specifically, a main branch of the three-way pipe 123 is connected to the steam outlet end 112 of the steam generator 11, other branches are respectively connected to the front spray pipe 121 and the rear spray pipe 122, and the cleaning medium flows from the main branch to the front spray pipe 121 and the rear spray pipe 122 through the branch after passing through the steam outlet end 112. Meanwhile, since the front nozzle 121 and the rear nozzle 122 extend to both sides of the blower device 200, respectively, the cleaning medium is diffused to other areas in front of and behind the blower device 200 by the rotation of the impeller 22, thereby achieving a cleaning effect.

As shown in fig. 7, when there are two steam outlet ends 112 of the steam generator 11, the steam generator 11 may be provided with two steam outlet ends 112, the front spray pipe 121 and the rear spray pipe 122 are independently disposed and respectively connected to the two steam outlet ends 112 of the steam generator 11, the front spray pipe 121 extends to one side of the impeller 22, the rear spray pipe 122 extends to the other side of the impeller 22 in a reverse direction relative to the front spray pipe 121, and the steam generator 11 respectively delivers steam cleaning medium to the front spray pipe 121 and the rear spray pipe 122 through the two steam outlet ends 112 to spray to two sides of the fan device 200 for cleaning.

In the embodiment of the present invention, the three-way pipe 123 is disposed on the outer peripheral wall of the volute 21, and the two branches extend forward and backward respectively, and the two outlet ends, that is, the front air inlet end F and the rear air inlet end B, extend forward and backward respectively, which means that the branches of the three-way pipe 123 extend forward and backward respectively toward the front air inlet end F and the rear air inlet end B, so as to connect the front nozzle 121 and the rear nozzle 122, and the connection modes of the front nozzle 121, the rear nozzle 122 and the three-way pipe are not limited, and may be plug-in connection, or directly integrate and form the three-way pipe 123, the front nozzle 121, and the rear nozzle 122 directly, and only the front nozzle 121 and the rear nozzle 122 can be sprayed to the two sides of the fan apparatus 200.

In an improved aspect of the present invention, referring to fig. 8, fig. 8 is a schematic structural view of a nozzle assembly in a first view angle in a cleaning device of a range hood provided in an embodiment of the present invention, the nozzle assembly 12 further includes a front nozzle control valve 124 and a rear nozzle control valve 125, both the front nozzle control valve 124 and the rear nozzle control valve 125 are electrically connected to a processor, and the processor can control the spraying of the cleaning medium front nozzle 121 and the rear nozzle 122 by issuing a command.

Specifically, the front nozzle control valve 124 is disposed between the front nozzle 121 and the steam generator 11, and the rear nozzle control valve 125 is disposed between the rear nozzle 122 and the steam generator 11; more specifically, a forward nozzle control valve 124 is disposed between the forward nozzle 121 and the tee 123, a rearward nozzle control valve 125 is disposed between the rearward nozzle 122 and the tee 123, and the main branch of the tee 123 is connected to the steam outlet end 112 of the steam generator 11. The benefit of this arrangement is that, in general, the maximum pressure of the steam cleaning medium at the steam outlet end 112 of the steam generator 11 is constant, with the front and rear

nozzle control valves

124 and 125 set to close one of them, so that steam cleaning medium flowing to tee 123 flows to only one of them; therefore, the pressure is concentrated on one spray pipe to be sprayed out, and the corresponding surface of the fan device 200 is effectively and powerfully washed, so that the overall cleaning quality and the cleaning efficiency are improved.

Referring to fig. 9, fig. 9 is a schematic structural view of a cleaning device of a range hood according to an embodiment of the present invention at a third viewing angle, the nozzle assembly 12 further includes a mounting bracket 13 for fixing the nozzle, the mounting bracket 13 is disposed on the fan device 200, specifically, the mounting bracket 13 is disposed on an end surface of the front wind port end and/or the rear wind port end, and the nozzle assembly 12 can be clamped on the mounting bracket 13 and limited by being embedded, so as to ensure that the nozzle assembly 12 does not deviate from a position due to vibration of the fan device 200 during operation and affect a cleaning effect. It is understood that the number of the mounting brackets 13 is not limited, and may be one or more than one, and only needs to limit the freedom of the nozzle assembly 12 to prevent the position thereof from changing.

Referring to fig. 10, fig. 10 is a structural schematic diagram of a fourth view angle of the cleaning device of the range hood according to the embodiment of the present invention, the nozzle assembly 12 further includes a nozzle extension end 126, the nozzle extension end 126 is defined as a common feature of the front nozzle 121 and the rear nozzle 122 extending into the impeller 22 inside the volute 21, specifically, the nozzle extension end 126 of the nozzle assembly 12 extends into an inner side of an inner circumference of the impeller 22, the nozzle extension end 126 is a portion sprayed by the steam cleaning medium, and an axial direction of the nozzle extension end 126 is the same as an axial direction of the impeller 22, so as to extend into the inner side to clean the impeller 22 and the volute 21. The shape of the nozzle end 126 is bent to provide a suitable angle for the steam cleaning medium to be sprayed, thereby reducing the design difficulty and increasing the cleaning degree.

Referring to fig. 10 and 11, fig. 11 is a schematic structural diagram of a nozzle in a cleaning device of a range hood according to an embodiment of the present invention, where the nozzle extension end 126 is provided with at least one nozzle hole, and optionally, the nozzle extension end 126 is provided with an axial nozzle hole 1261 and a circumferential nozzle hole 1262 which are arranged relative to the impeller 22, and a steam cleaning medium is sprayed from the axial nozzle hole 1261 and the circumferential nozzle hole 1262 in both axial and circumferential directions relative to the impeller 22, so as to perform synchronous cleaning on a middle connection fixing position and a rear side position of the impeller 22, and the setting is advantageous in that: generally speaking, the two positions are positions where oil stains are easy to accumulate and the users are difficult to clean, and through the setting, the cleaning range of the spray pipe assembly 12 can be increased, dead angles are avoided, meanwhile, the cleaning efficiency is accelerated, and the cleaning time is shortened, so that the high-efficiency and high-quality requirements of the users are met.

Referring to fig. 11 and 12, fig. 12 is an enlarged schematic view of a part of the structure of the cleaning device of the range hood according to the embodiment of the present invention, wherein the spraying direction of the spraying pipe assembly 12 is: through the setting of axial spray hole 1261 and circumferential spray hole 1262, the circumferential spray hole 1262 of spray tube subassembly 12 sprays the interior concave surface of blade (not marked) in impeller 22 to better diffusion when making steam cleaning medium spray to impeller 22, and the direction of spraying is impeller 22 normal circular telegram reverse of rotation, and the direction that spray tube subassembly 12 sprayed steam cleaning medium rotates for relative direction with impeller 22 promptly, thereby form blade and inflow opposite direction contact, further increase the cleaning performance, make the washing more thorough.

In summary, the structural features of the cleaning device are correspondingly described above, and based on the cleaning device, the processing logic configured by the processor is described in detail below.

According to the above, the processor is configured to: the spray pipe is controlled to spray cleaning media in different areas, the areas which are difficult to clean in the areas to be cleaned are cleaned firstly, and the areas which are easy to clean are cleaned later.

With the processing logic configured by the processor, the cleaning apparatus can set the following modes according to the configuration, thereby performing cleaning in the following manner.

1. When the cleaning device is not provided with the front spray pipe control valve and the rear spray pipe control valve, after the cleaning device is started for cleaning, the steam generator starts to work, the medium is heated and output from the spray pipe assembly, and meanwhile, the front air inlet end and the air inlet end of the fan device are cleaned;

2. when the spray pipe assembly is provided with the front spray pipe control valve and the rear spray pipe control valve, the front air inlet end and the air inlet end of the fan device can be cleaned simultaneously in the mode, and the front area or the rear area can be cleaned independently;

specifically, in one mode of the embodiment of the present application, the front side oil stain is generally more serious than the back side oil stain, that is, the front air inlet end is more oil stain adsorbed than the back air inlet end, so that the front air inlet end is directly used as a region difficult to clean, otherwise, the back air inlet end is a region easy to clean, in the cleaning mode, the front spray pipe control valve is independently opened first, the front air inlet end of the fan device is cleaned, after a period of time, the front side valve is closed, and the back side valve is independently opened for a period of time, so that the back air inlet end of the fan device is cleaned; and finally, simultaneously opening the front spray pipe control valve and the rear spray pipe control valve, flushing two sides, and finishing. Can concentrate steam flow and pressure like this and wash the difficult cleaning area key earlier, and because the radial wind-force maximum value of range hood impeller pivoted is also the same invariable, can all concentrate wind-force at every turn through wasing in batches, abluent greasy dirt is all taken out range hood in washing at every turn, prevents to omit or dead angle, guarantees cleaning range and effect. It will be appreciated by those skilled in the art that the cleaning mode may be derived from a number of experiments, such as if similar designs were used, and would be within the scope and range of equivalents of the present invention.

In the application, the method can be improved, and is developing the pre-implemented aspect, namely, the distribution dirty degree of the oil stains of the impeller and the volute is judged through image recognition, so that the hard-to-clean area and the easy-to-clean area of the fan device are judged, and then cleaning is carried out according to the logic of a processor: accordingly, the processor may be further configured to:

acquiring an image of the area to be cleaned before controlling the spray pipe to spray the steam cleaning medium in the areas;

determining the surface cleanliness of the area to be cleaned according to the image;

and determining the difficult cleaning area and the easy cleaning area according to the surface cleanliness.

Specifically, by acquiring images of the front wind port end and the rear wind port end of the fan device, the images can be acquired by using a camera; the method is implemented by combined equipment such as a CCD camera, a digital camera and an image acquisition card, and further the surface cleanliness can be obtained by taking oil stain as a contour after the image of a region to be cleaned is subjected to gray level binarization, and obtaining the cleanliness of the surface of the region to be cleaned according to the ratio of black pixel points reflected by the oil stain to the whole area of the region to be cleaned or directly according to the area occupied by the oil stain; exemplary are as follows: 1. carrying out gray level binarization on an image of a region to be cleaned; 2. separating out the part with oil stains on the area to be cleaned through local threshold separation; 3. calculating a proportional value of the oil stain part in the area of the whole area to be cleaned; 4. and comparing the ratio value with a preset threshold value to obtain the surface cleanliness. Exemplary are as follows: the proportion value of the oil stain part occupying the whole area of the area to be cleaned is 50% as one of the threshold values, when the proportion value is lower than the threshold value, the area to be cleaned is determined to be cleaner, namely, the area to be cleaned is easier to clean, otherwise, when the proportion value exceeds the threshold value, the area to be cleaned is determined to be dirty, namely, the area to be cleaned is difficult to clean.

In an embodiment of the invention, the processor is further configured to:

aiming at each stage that the spray pipe cleans a region which is difficult to clean, a region which is easy to clean and cleans all regions to be cleaned simultaneously, the drive motor is controlled to drive the impeller to intermittently rotate along the first direction;

wherein controlling the drive motor to drive the impeller to intermittently rotate in a first direction comprises:

and in each rotation period, controlling the driving motor to drive the impeller to rotate for a first preset time or to reach a first preset rotation speed, and controlling the driving motor to stop driving the impeller so as to enable the impeller to continue to rotate along the first direction under inertia.

Referring to fig. 13, fig. 13 is a graph illustrating a relationship between time and speed when a processor in a cleaning device for a range hood according to an embodiment of the present invention operates, wherein an abscissa represents a time axis, and a1 represents a rotation speed curve of an impeller;

referring to the curve a1, with 0 and a11 as two time nodes, the impeller can rotate in the time span of 0 to a11 under the inching control of the driving motor, and the time span of 0 to a11 is the first predetermined time period t1, as an example: the driving motor can be set to drive the impeller to enter a cleaning mode, the impeller is inching controlled to rotate from 0s to 6s through the driving motor, then inching control is stopped, the impeller rotates from 9s to 15s, then inching control is stopped, and the like. Or the other way is to control the rotation of the impeller by the rotation speed, namely when the impeller reaches the speed of the first preset rotation speed v1, the driving motor is controlled to stop driving the impeller, and in short, the impeller is controlled to stop driving the impeller as long as the rotation speed of the impeller reaches a certain value, namely the first preset rotation speed v 1.

It can be understood that the driving motor can make the rotation speed of the impeller continuously increase, according to the characteristic of the general driving motor, the acceleration is reduced along with the increase of the rotation speed, in brief, under the premise that the power of the driving motor is constant, the rotation speed and the torque of the driving motor are in an inverse relation, so that the higher the rotation speed, the smaller the torque and the smaller the acceleration, and conversely, the higher the rotation speed, the torque is reduced, and since the driving motor is in the energy consumption area in the interval from 0 to a11, the impeller consumes more electricity at idle speed and the cleaning effect is not good, therefore, the value of the embodiment e of the present invention is 500 rpm, preferably 650 rpm. After the driving motor stops driving the impeller, the impeller still continues to rotate in the first direction under the inertia due to the inertia, and the rotating speed gradually decreases under the damping effect until the rotating speed A1 reaches the zero value. The advantages of the above mode are that: the driving motor can save energy consumption through intermittent operation, and cleaning medium splashing caused by excessive stirring of the cleaning medium can be avoided.

The processor being configured to control the drive motor to drive the impeller to intermittently rotate in the first direction includes:

and after the impeller stops rotating for a second preset time, controlling the driving motor again to drive the impeller to rotate.

Continuing to observe the a1 curve, the above configuration is briefly that after the impeller stops rotating for a second predetermined time period t2, the drive motor is controlled again to drive the impeller to rotate, wherein the configuration is an optional implementation step, namely, after the impeller stops rotating, the drive motor is controlled twice to drive the impeller to rotate intermittently in the first direction; or after the impeller is stopped for a period of time, namely after the second preset time period t 2. The specific requirement is determined according to the type and form of the medium contained in the cleaning medium and the operating environment of the range hood, and for example, if the cleaning medium is a medium which is easy to generate bubbles, if the impeller does not stop, the repeated rotation can cause serious bubbling; if the cleaning medium is only clean water, the impeller can be stopped for a period of time after stopping rotation, so that the better effect can be achieved. For example, if the range hood needs to be cleaned quickly during cleaning, the range hood may not need to be stopped for a period of time after the impeller stops rotating, and if the range hood needs to be cleaned in an energy-saving manner, the range hood may need to continue to execute the cleaning after the impeller stops rotating for a period of time. The designer can set different cleaning modes for the range hood according to the above for the user to select, thereby improving the experience degree of the user.

On the other hand, when the impeller stops rotating for the second preset time t2, the recovery preparation time can be provided as the inertia of the impeller and the steam injection, so that the preparation of the cleaning medium and the preparation of the power are performed for the next rotation period, the overload of the repeated work of the driving motor is prevented, and the reliability and the durability of the range hood are improved.

In an embodiment of the present invention, a cleaning method for a range hood is further provided, where the range hood includes a fan device and a cleaning device, the fan device includes a volute, an impeller located in the volute, and a driving motor for driving the impeller to rotate, and the cleaning device includes a steam generator configured to supply a steam cleaning medium; the spray pipe assembly is communicated with the steam generator and is used for introducing a steam cleaning medium from the steam generator so as to clean a to-be-cleaned area of the fan device; the spray pipe assembly comprises at least two spray pipes, and the spray pipes are respectively arranged at least two areas to be cleaned of the fan device;

the cleaning method comprises the following steps: the spraying pipe is controlled to spray steam cleaning medium in different areas, the areas which are difficult to clean in the areas to be cleaned are cleaned firstly, and the areas which are easy to clean are cleaned later.

In an improved aspect of the present application, an image recognition technology may be adopted to determine the difficulty level of cleaning the area to be cleaned, and specifically, referring to fig. 14, fig. 14 is a flowchart of one step in the cleaning method for the range hood according to the embodiment of the present invention, including the following steps:

step S11: acquiring an image of a to-be-cleaned area of the fan;

step S12: determining the surface cleanliness of the area to be cleaned according to the image;

step S13: the difficult-to-clean area and the easy-to-clean area are determined according to the surface cleanliness.

In the embodiment of the invention, the areas to be cleaned are the front air inlet end and the rear air inlet end of the fan device, the area which is difficult to clean is one of the front air inlet end and the rear air inlet end, and the area which is easy to clean is the other.

Specifically, by acquiring images of the front wind port end and the rear wind port end of the fan device, the images can be acquired by using a camera; the method comprises the following steps that combined equipment such as a CCD camera, a digital camera and an image acquisition card is used for completing the operation, and then the surface cleanliness can be obtained by taking oil stains as a contour after the gray level of an image of a region to be cleaned is binarized, and according to the ratio of black pixel points reflected by the oil stains to the whole area of the region to be cleaned or directly according to the area occupied by the oil stains, the cleanliness of the surface of the region to be cleaned is obtained; exemplary are as follows: 1. carrying out gray level binarization on an image of a region to be cleaned; 2. separating out the part with oil stains on the area to be cleaned through local threshold separation; 3. calculating a proportional value of the oil stain part in the area of the whole area to be cleaned; 4. and comparing the ratio value with a preset threshold value to obtain the surface cleanliness. Exemplary are as follows: the proportion value of the oil stain part occupying the whole area of the area to be cleaned is 50% as one of the threshold values, when the proportion value is lower than the threshold value, the area to be cleaned is determined to be cleaner, namely, the area to be cleaned is easier to clean, otherwise, when the proportion value exceeds the threshold value, the area to be cleaned is determined to be dirty, namely, the area to be cleaned is difficult to clean.

The mode of judging the difficult cleaning area and the easy cleaning area through image recognition can increase the intelligent degree of the cleaning device, improve the cleaning effect and bring more convenience to users.

In an embodiment of the present invention, the cleaning method further includes: aiming at each stage of cleaning all areas to be cleaned by the spraying pipe at the front air inlet end, the rear air inlet end and the like;

controlling a driving motor to drive an impeller to intermittently rotate along a first direction;

and in each rotation period, controlling the driving motor to drive the impeller to rotate for a first preset time or reaching a second preset rotation speed, and controlling the driving motor to stop driving the impeller so as to enable the impeller to continue to rotate along the first direction under inertia.

The cleaning method further comprises the following steps: controlling the drive motor to drive the impeller to intermittently rotate in the first direction further comprises: and after the impeller stops rotating for a second preset time, controlling the driving motor to drive the impeller to rotate again.

When the spray pipe sprays steam cleaning medium to clean the fan device, the direction of the spray pipe spraying the steam cleaning medium and the rotation of the impeller are opposite.

The above detailed portions of the method have been explained while describing the structural features of the cleaning apparatus in the present application, and this embodiment will not be repeated.

It will also be understood by those skilled in the art that if the method and apparatus of the present invention are simply changed or combined with other methods and functions described above or replaced with other devices, such as the replacement of model materials for each component, the replacement of usage environment, the simple replacement of positional relationship between components, etc.; or the products formed by the components are integrally arranged; or a detachable design; it is within the scope of the present invention to replace the methods and apparatus of the present invention with any method/apparatus/device that combines the components to form a method/apparatus/device with specific functionality.

The embodiment of the present invention further provides a machine-readable storage medium, where the machine-readable storage medium has instructions stored thereon, and the instructions are used for enabling a processor to execute the cleaning method of the range hood according to the above embodiment when executed by the processor.

In an embodiment of the present invention, a range hood is further provided, and the range hood includes the above range hood cleaning device, and a fan device, or a combination of the cleaning device and the fan device. It should be understood that the range hood is not limited to the size and the outline, and only the cleaning method of the range hood is needed, and the method realizes the same or similar functions, and the range hood also belongs to the protection scope of the invention.

The range hood further comprises a memory, the range hood cleaning method can be stored in the memory as a program unit, and the processor executes the program unit stored in the memory to realize corresponding functions.

The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. One or more than one inner core can be set, and the start and stop of the spray pipe are controlled according to the rotating speed of the impeller by adjusting the parameters of the inner core.

The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or Flash memory (Flash RAM). The memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include Transitory computer readable media (transient media) such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides a belt cleaning device for range hood, range hood includes the fan device, the fan device includes the spiral case, is located the impeller of spiral case and is used for driving impeller pivoted driving motor, its characterized in that, belt cleaning device includes:

a steam generator configured to supply a steam cleaning medium;

the spray pipe assembly is communicated with the steam generator and is used for introducing a steam cleaning medium from the steam generator so as to clean the to-be-cleaned area of the fan device, wherein the spray pipe assembly comprises at least two spray pipes which are respectively arranged at the to-be-cleaned areas of the fan device, each spray pipe at least comprises a spray pipe extending end, and the spray pipe extending end is positioned on the inner side of the impeller;

the fan device is fixedly connected to the rack top plate;

the monitor is arranged on one surface of the top plate of the rack corresponding to the rear end of the volute and comprises a data interface and an optical assembly, the optical assembly faces the interior of the volute, the optical assembly faces one end of a front air opening of the volute, the surface of the optical assembly is sunken, and therefore the rotating state of the impeller is detected, wherein the rotating state of the impeller comprises at least one of rotating speed and rotating direction;

a processor configured to:

controlling the spray pipe assembly to spray steam cleaning media in different areas so as to clean the difficult-to-clean area preferentially in the difficult-to-clean area and the easy-to-clean area of the at least two areas to be cleaned;

after the area which is difficult to clean is preferentially cleaned, all the areas to be cleaned are cleaned simultaneously again;

when the fan device is cleaned by the steam cleaning medium sprayed by the spray pipe, the direction of the steam cleaning medium sprayed by the spray pipe and the rotation of the impeller are opposite.

2. The cleaning device of claim 1, wherein the areas to be cleaned are a front tuyere end and a rear tuyere end of the fan device, the less-cleanable area is the front tuyere end, and the more-cleanable area is the rear tuyere end;

the at least two spray pipes comprise a front spray pipe and a rear spray pipe, the front spray pipe extends into the volute cavity from the front air inlet end of the fan device, and the rear spray pipe extends into the volute cavity from the rear air inlet end of the fan device.

3. The cleaning device of claim 2, wherein the spout assembly further comprises:

the front spray pipe control valve is used for controlling the front spray pipe to spray steam cleaning medium; and

and the rear spray pipe control valve is used for controlling the rear spray pipe to spray the steam cleaning medium.

4. The cleaning device of claim 1, wherein the processor is further configured to:

in each stage of cleaning the difficult-to-clean area, cleaning the easy-to-clean area and simultaneously cleaning all the areas to be cleaned, controlling the driving motor to drive the impeller to intermittently rotate along a first direction;

in each rotation period, controlling the driving motor to drive the impeller to rotate for a first preset time or to reach a first preset rotation speed, and controlling the driving motor to stop driving the impeller so as to enable the impeller to continue to rotate in a first direction under inertia;

and after the impeller stops rotating for a second preset time, controlling the driving motor to drive the impeller to rotate again.

5. The cleaning device of claim 1, wherein the processor is further configured to:

6. A range hood, characterized by comprising a cleaning device for a range hood as claimed in any one of claims 1 to 5.

7. A cleaning method for a range hood, the range hood comprising a fan device and a cleaning device, the fan device comprising a volute, an impeller located in the volute and a drive motor for driving the impeller to rotate, the cleaning device comprising a steam generator configured to supply a steam cleaning medium; the spray pipe assembly is communicated with the steam generator and is used for introducing a steam cleaning medium from the steam generator so as to clean a region to be cleaned of the fan device, wherein the spray pipe assembly comprises at least two spray pipes which are respectively arranged at the region to be cleaned of the fan device, each spray pipe at least comprises a spray pipe extending end, and the spray pipe extending end is positioned on the inner side of the impeller; the fan device is fixedly connected to the rack top plate; the monitor is arranged on one surface of the top plate of the rack corresponding to the rear end of the volute and comprises a data interface and an optical assembly, the optical assembly faces the interior of the volute, the optical assembly faces one end of a front air opening of the volute, the surface of the optical assembly is sunken, and therefore the rotating state of the impeller is detected, wherein the rotating state of the impeller comprises at least one of rotating speed and rotating direction; the cleaning method is characterized by comprising the following steps:

controlling the spray pipe to spray steam cleaning media in different areas so as to clean the difficult-to-clean area preferentially in the difficult-to-clean area and the easy-to-clean area of the at least two areas to be cleaned;

8. The cleaning method according to claim 7, further comprising:

before the spray pipe is controlled to spray the steam cleaning medium in different areas, obtaining an image of the area to be cleaned;

9. The cleaning method according to claim 7, wherein the areas to be cleaned are a front tuyere end and a rear tuyere end of the fan device, the area less easily cleaned is the front tuyere end, and the area more easily cleaned is the rear tuyere end.

10. The cleaning method according to claim 7, further comprising:

in each rotation period, controlling the driving motor to drive the impeller to rotate for a first preset time or reaching a second preset rotation speed, and controlling the driving motor to stop driving the impeller so as to enable the impeller to continue to rotate in a first direction under inertia;

11. A machine-readable storage medium having stored thereon instructions for enabling a processor to perform the method of cleaning a range hood according to any one of claims 7 to 10 when executed by the processor.