CN212841760U

CN212841760U - Fume exhaust fan

Info

Publication number: CN212841760U
Application number: CN202021380100.9U
Authority: CN
Inventors: 杨川; 张恩齐; 向运明
Original assignee: Qingdao Hisense Electronic Industry Holdings Co Ltd; Hisense Guangdong Kitchen and Bath System Co Ltd
Current assignee: Hisense Guangdong Kitchen and Bath System Co Ltd; Hisense Group Holding Co Ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-03-30
Anticipated expiration: 2030-07-14

Abstract

The application discloses range hood relates to kitchen equipment technical field, can be to range hood cleaning performance better, and the cleaning methods that do not need the heating to motor heat dissipation, reliability and structure corrosion resistance scheduling problem that the heating brought have been avoided. The application provides a range hood, which comprises an air box, a fan, a control valve and a cleaning assembly, wherein the fan is installed in the air box and comprises a volute and an impeller positioned in the volute, and an oil leakage port is formed in the bottom of the volute; the control valve is arranged at the oil leakage port and is used for controlling the opening or closing of the oil leakage port; the cleaning assembly comprises an ultrasonic transducer, a connecting pipeline and a storage device used for bearing cleaning liquid, the ultrasonic transducer is installed at the bottom of the volute, one end of the connecting pipeline is communicated with the volute, the other end of the connecting pipeline is communicated with the storage device, and the connecting pipeline can inject the cleaning liquid in the storage device into the volute. The range hood of this application is used for clean fan.

Description

Fume exhaust fan

Technical Field

The application relates to the technical field of kitchen equipment, in particular to a range hood.

Background

At present, the self-cleaning technology adopted by the range hood mainly comprises the following three types: steam washing, steam water washing and heating washing. Wherein, the steam washing and the steam water washing mainly wash the impeller of the fan by heating fluid; the heating washing is mainly realized by arranging an electric heating film on a volute of a fan, and the electric heating film heats the volute to liquefy oil stains, so that the cleaning purpose is achieved.

If the cleaning effect of the self-cleaning technology is improved, the liquefaction effect of the oil stain can be improved by further improving the heating temperature of the fluid or the heating temperature of the electric heating film, and as the temperature of the fluid is increased to 60-80 ℃ by the existing steam washing and distilled water elution and the heating temperature of the electric heating film to the volute is more than 150 ℃, the further improvement of the heating temperature can bring more problems of heat dissipation, reliability, structural corrosion resistance and the like of the motor.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a range hood, can be to the better cleaning methods that just need not heat of range hood cleaning performance to motor heat dissipation, reliability and the corrosion resistance scheduling problem of structure that the heating brought have been avoided.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, the application provides a range hood, which comprises an air box, a fan, a control valve and a cleaning assembly, wherein the fan is installed in the air box, the fan comprises a volute and an impeller positioned in the volute, and an oil leakage port is formed in the bottom of the volute; the control valve is arranged at the oil leakage port and is used for controlling the opening or closing of the oil leakage port; the cleaning assembly comprises an ultrasonic transducer, a connecting pipeline and a storage device used for bearing cleaning liquid, the ultrasonic transducer is installed at the bottom of the volute, one end of the connecting pipeline is communicated with the volute, the other end of the connecting pipeline is communicated with the storage device, and the connecting pipeline can inject the cleaning liquid in the storage device into the volute.

Compared with the prior art, the range hood of this application embodiment is when carrying out the cleaning procedure, after the oil leak mouth through the control valve with fan spiral case bottom is closed, inject the washing liquid in storage device, the washing liquid gets into in the connecting tube through the one end opening of connecting tube, the other end opening of rethread connecting tube gets into in the spiral case of fan, through the liquid level of the washing liquid of control injection spiral case, make the washing liquid that the bottom of spiral case is deposited can submerge partial impeller, open ultrasonic transducer and motor, ultrasonic transducer promotes the clean effect of washing liquid to the impeller, make clean effect better, and this clean scheme need not heat, can avoid the motor heat dissipation that the heating brought, reliability and structure corrosion resistance scheduling problem.

In some possible embodiments of the present application, the range hood further includes a smoke collecting hood, a smoke guide plate and an oil cup, wherein the smoke collecting hood is installed below the air box, a smoke collecting cavity is formed in the smoke collecting hood, and a connecting structure is arranged on the smoke collecting hood; the smoke guide plate is arranged in the smoke collection cavity; the oil cup is positioned below the smoke guide plate and can be detachably connected with the connecting structure of the smoke collecting cover; the cleaning assembly further comprises a pump, the pump can pump cleaning liquid in the storage device into the volute, and when the oil cup is detached from the connecting structure of the fume collecting hood, the storage device can be detachably connected with the connecting structure. When range hood carries out cleaning operation, can pull down the back with the oil cup from the connection structure of collection petticoat pipe, be connected storage device and the connection structure of collection petticoat pipe to cleaning operation carries out, oil cup and storage device's dismantlement is all more convenient, and the transportation of being convenient for, and has set up storage device, and the structure that need not change original range hood comes to reserve installation space for storage device, makes and carries out structural improvement also easier at current range hood.

In some possible embodiments of the present application, the connecting structure is a hook, and the oil cup and the storage device are both provided with a hanging part matched with the hook, so that the hanging mode is simple to operate, and the oil cup and the storage device can be conveniently disassembled and assembled.

In some possible embodiments of the present application, the pump is installed between the outer side of the upper portion of the volute and the air box, and the pump is installed in the air box due to the gap between the outer side of the upper portion of the volute and the air box, so that the installation space is not required to be specially arranged at other positions of the air box, and the pump is located on the outer side of the upper portion of the volute and cannot block the inlet air of the fan.

In some possible embodiments of the present application, the number of the ultrasonic transducers is two, the two ultrasonic transducers are respectively located on two sides of the oil leakage port, and the cleaning effect of the two ultrasonic transducers on the impeller is good.

In some possible embodiments of the application, the water level scales are arranged on the storage device, so that a user can control the amount of the cleaning liquid added into the storage device by taking the water level scales as a reference, detection is not needed by using a flow sensor, and the cost is saved.

In some possible embodiments of the present application, the control valve is an electromagnetic valve, and the electromagnetic valve has the advantages of small volume, reliable action, convenient maintenance, low price, and the like.

In a second aspect, an embodiment of the present application provides a cleaning control method for a range hood in the foregoing embodiment, where when the storage device carrying a cleaning liquid is connected to the connection structure, the cleaning control method includes: receiving a cleaning instruction; the oil leakage port is closed by the control valve, and the cleaning liquid in the storage device is injected into the volute by the pump; when the cleaning liquid in the volute reaches a preset water level, controlling the pump to be closed; and controlling the ultrasonic transducer to operate and the motor of the fan to start. The technical effect that the cleaning control method of the embodiment of the application can obtain is the same as that of the range hood in the embodiment, and the cleaning control method and the range hood can solve the same technical problem, and are not repeated here.

In some possible embodiments of the present application, when the cleaning liquid in the volute reaches a preset water level, the turning off of the pump specifically includes: and controlling the pump to be closed when the detected running current of the pump indicates that the pump is in an idle running state. The method can know whether the cleaning liquid in the storage device is completely led into the volute through the running current of the pump without arranging other detection devices, and has simple control method and lower cost.

In some possible embodiments of the present application, the controlling the operation of the ultrasonic transducer and the starting of the motor of the blower specifically includes: and controlling the ultrasonic transducer to operate, and simultaneously controlling the motor to rotate at a preset rotating speed. According to the method, the motor is controlled to drive the impeller to rotate at a slow preset rotating speed, and meanwhile, the ultrasonic transducer drives the cleaning liquid to clean oil stains on the impeller, so that the cleaning effect is good.

In some possible embodiments of the present application, the controlling the operation of the ultrasonic transducer and the starting of the motor of the blower specifically includes: and after the ultrasonic transducer is controlled to operate for a preset time, the motor is controlled to drive the impeller of the fan to rotate for a preset angle. According to the method, after the ultrasonic transducer is started for cleaning for the preset time, the motor is controlled to drive the impeller to rotate for a certain angle at the slow preset rotating speed, the ultrasonic transducer drives the cleaning liquid to clean the oil stains on the impeller, and the cleaning effect is good.

In some possible embodiments of the present application, the cleaning control method further includes: after the running time of the ultrasonic transducer and the starting time of the motor of the fan reach preset time, controlling the ultrasonic transducer and the motor to stop running, and opening an oil leakage port by the control valve; and sending an instruction for reminding the end of the cleaning program after the opening time reaches the preset time. The method can remind the user of dumping the used cleaning liquid in the storage device in time.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic side view of a range hood provided with a storage box according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a portion of a component in a range hood according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a range hood according to an embodiment of the present disclosure without an air box;

fig. 4 is a second schematic structural diagram of a part of components in the range hood according to the embodiment of the present application;

fig. 5 is a schematic structural view illustrating a cleaning solution injected into a volute of the range hood according to the embodiment of the present application;

FIG. 6 is a second schematic structural view of a range hood according to an embodiment of the present invention without an air box;

fig. 7 is a third schematic structural diagram of a part of a component in the range hood according to the embodiment of the present application;

fig. 8 is a schematic front structural view of a range hood according to an embodiment of the present application;

FIG. 9 is a third schematic structural view of a range hood according to an embodiment of the present disclosure without a bellows;

fig. 10 is a schematic side view of a range hood according to an embodiment of the present disclosure, in which an oil cup is installed;

fig. 11 is a schematic three-dimensional structure diagram of a range hood according to an embodiment of the present disclosure;

FIG. 12 is an enlarged view of portion A of FIG. 11;

fig. 13 is a second schematic three-dimensional structure of a range hood according to an embodiment of the present application;

FIG. 14 is an enlarged view of portion B of FIG. 13;

fig. 15 is a flowchart illustrating a cleaning control method of the range hood according to the embodiment of the present application.

Reference numerals:

100-cleaning fluid; 1-an air box; 2-smoke collecting hood; 21-hanging hooks; 210-hanging interface; 211-a first mounting plate; 212-a second mounting plate; 213-first connection plate; 214-a second connecting plate; 3-oil net; 4-a smoke guide plate; 5-oil cup; 6, a fan; 61-a volute; 62-a motor; 63-an impeller; 7-a control valve; 8-cleaning the component; 81-a storage box; 811-a second hanging part; 82-connecting a pipe; 83-ultrasonic transducer; 84-pump.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description of the present application, "and/or" is only one kind of association relationship describing an associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Referring to fig. 1, the present application relates to a range hood, which comprises a box body assembly, a smoke collecting hood assembly, an oil collecting and discharging device, a fan 6, an electric control system, a lighting system and a power switch.

Wherein, the box subassembly is including decorating cover, bellows 1 and check valve, and the decorative board is installed in the outside of bellows 1, and the check valve is installed in the top air outlet department of bellows 1.

The fume collecting hood 2 component comprises a fume collecting hood 2 and a fume collecting hood cover plate, the fume collecting hood 2 is installed below the air box 1, and a cavity formed by upwards sinking a bottom plate of the fume collecting hood 2 is a fume collecting cavity.

The oil collecting and discharging device comprises an oil screen 3, a smoke guide plate 4 and an oil cup 5, wherein the oil screen 3, the smoke guide plate 4 and the oil cup 5 are all installed in a smoke collecting cavity, the smoke guide plate 4 is installed below the oil screen 3, and the oil cup 5 is installed below the smoke guide plate 4 and the oil screen 3.

Referring to fig. 1, 2 and 3, the fan 6 is composed of a volute 61, a motor 62 and an impeller 63, the fan 6 is installed in the air box 1, the electric control system is installed above the air box 1 and located in the decorative cover, the lighting system and the power switch are both installed on the smoke collecting cover 2, and the power switch is electrically connected with the electric control system, the fan 6 system and the lighting system.

When the range hood receives an operation instruction, the power switch is turned on, the fan 6 is controlled to be started (the lighting device can be turned on according to the needs of a user), the fan 6 sucks cooking oil smoke into the smoke collection cavity through the smoke guide plate 4, and then the cooking oil smoke is discharged to a public flue or outdoors through the oil net 3 and the air ducts in the air box 1, so that the oil smoke suction function of the range hood is realized.

When a large amount of oil smoke passes through the smoke collection cavity, part of the oil smoke is condensed on the smoke guide plate 4 and the oil screen 3, oil stains on the oil screen 3 are condensed and then fall onto the smoke guide plate 4, and the oil stains on the smoke guide plate 4 gradually fall under the action of gravity and finally enter the oil cup 5.

Certainly, when oil smoke passes through the fan 6, the oil smoke is deposited on the impeller 63 of the fan 6 and the volute 61, in order to guide out oil stain deposited on the fan 6, an oil leakage port is formed in the bottom of the volute 61, and the oil stain on the impeller 63 and the oil stain on the inner wall of the volute 61 can fall to the oil screen 3 and the smoke guide plate 4 through the oil leakage port and finally enter the oil cup 5.

Referring to fig. 4, a control valve 7 is installed at the oil leakage port, and the control valve 7 can control the opening or closing of the oil leakage port. The control valve 7 is an electromagnetic valve which has the advantages of small volume, reliable action, convenient maintenance, low price and the like. Of course, the control valve 7 may be an electric valve.

The range hood in the embodiment of the present application further includes a cleaning assembly 8, the cleaning assembly 8 includes a storage box 81 and a connection pipe 82, the storage box 81 is used for containing a cleaning liquid, one end of the connection pipe 82 is communicated with the volute 61, the other end of the connection pipe 82 is communicated with the storage box 81, the cleaning liquid in the storage box 81 can enter the connection pipe 82 through an opening at one end of the connection pipe 82 and then enter the volute 61 through an opening at the other end of the connection pipe 82, as shown in fig. 3 and 5, so that the cleaning liquid 100 is introduced into the volute 61, and the liquid level of the cleaning liquid injected into the volute 61 is controlled, so that the bottom of the volute 61 is stored to submerge a part of the impeller 63, and the impeller 63 can be cleaned by the.

Referring to fig. 6 and 7, the cleaning assembly 8 further includes an ultrasonic transducer 83, the ultrasonic transducer 83 is mounted at the bottom of the volute 61, and after the cleaning solution 100 is introduced into the volute 61, the ultrasonic transducer 83 is turned on, so that the cleaning solution 100 can better clean the impeller 63, and the cleaning effect is better. Of course, the cleaning liquid 100 will also clean the covered inner wall of the volute 61.

It should be noted that before the cleaning liquid 100 is introduced into the volute 61, the oil leakage port needs to be closed by the control valve 7 to ensure that the cleaning liquid 100 can stay in the volute 61. When the range hood is in the working state of oil smoke absorption, the control valve 7 opens the oil leakage opening.

The range hood of the embodiment of the application is when carrying out the cleaning procedure, after the oil leak mouth through the control valve with 6 volutes of fan 61 bottoms is closed, inject the washing liquid in storage box 81, the washing liquid passes through connecting tube 82's one end opening and gets into in connecting tube 82, the other end opening of rethread connecting tube 82 gets into in 6 volutes of fan 61, pour into the liquid level of the washing liquid in volutes 61 through control, make the washing liquid that the bottom of volutes 61 is accumulated can submerge partial impeller 63, open ultrasonic transducer 83 and motor 62, ultrasonic transducer 83 promotes the cleaning effect of washing liquid to impeller 63, make cleaning effect better, and this cleaning scheme need not heat, can avoid the motor heat dissipation that the heating brought, reliability and structure corrosion resistance scheduling problem.

The above-mentioned storage box 81 can be installed in wind box 1, and the storage box 81 is installed at a position higher than the lower portion of volute 61, so that the cleaning liquid 100 in storage box 81 can be directly introduced into volute 61 through connecting pipe 82 by gravity.

Be provided with the water level scale on the storage box 81, this water level scale is for can submerge the water level of the required washing liquid of partial impeller 63, and the user reaches the volume of the washing liquid of water level scale department in the storage box 81 through adding, can control the water level of the washing liquid of adding in the spiral case 61, and need not use flow sensor to detect, practices thrift the cost.

The water level scales can be one or more, and a user can be informed of a comparison table corresponding to each water level scale for cleaning the oil stains with different severity on the range hood in a product specification of the range hood; or directly marking characters which correspondingly indicate the severity of the oil stain on the water level scales. Specifically, the water level scale is a water level scale line.

The ultrasonic transducer 83 may be directly contacted with the cleaning liquid in the volute 61 or may not be contacted with the cleaning liquid in the volute 61, and the ultrasonic transducer 83 indirectly acts on the cleaning liquid through the volute to perform a cleaning operation, so that the ultrasonic transducer 83 can be prevented from being corroded by the cleaning liquid.

Referring to fig. 7 and 9, the ultrasonic transducer 83 is mounted on the bottom outer wall of the volute 61, and may be fixed on the bottom outer wall of the volute 61 by screws, or directly adhered to the bottom outer wall of the volute 61, and the connection manner is simple.

The number of the ultrasonic heat exchangers can be one or more. Fig. 8 shows a scheme that two ultrasonic transducers 83 are installed on the volute 61, the two ultrasonic transducers 83 are respectively located at two sides of the oil leakage port, and the two ultrasonic transducers 83 simultaneously act on the cleaning liquid 100, so that the cleaning effect on the range hood is good.

Illustratively, a mounting structure is provided in the bellows 1, by which the storage box 81 is fixed to the bellows 1.

In the embodiment of the application, a connecting structure is arranged on the fume collecting hood 2, and the oil cup 5 is detachably connected with the fume collecting hood 2 through the connecting structure. The connecting structure can be arranged at the rear side edge of the bottom plate of the fume collecting hood 2 or at the central position of the bottom plate of the fume collecting hood 2.

If this connection structure for collection for having seted up one or more mounting hole on the petticoat pipe 2, the position that corresponds the mounting hole on the oil cup 5 has seted up the mating holes, through the mounting screw in mating holes, mounting hole, realize being connected of oil cup 5 and collection petticoat pipe 2.

If the connection structure is a bayonet arranged on the fume collecting hood 2, the oil cup 5 is buckled with the bayonet in a position corresponding to the bayonet, and the connection of the oil cup 5 and the fume collecting hood 2 is realized through the buckling and buckling.

Referring to fig. 11 and 12, in a specific embodiment of the present application, the connecting structure is a hook 21 provided on the fume collecting hood 2, and the oil cup 5 is formed with a first hanging part matched with the hook 21, and the hanging part can be hung in the hook 21. The oil cup 5 is convenient to disassemble and transport.

In the above scheme, the oil cup 5 can be conveniently detached from the fume collecting hood 2, and therefore, the storage box 81 of the embodiment of the present application is formed with the second hanging part 811, which has the same structure as the first hanging part on the oil cup 5.

When the range hood performs cleaning operation, the oil cup 5 can be detached from the fume collecting hood 2, and then the storage box 81 is connected with the connecting structure of the fume collecting hood 2, as shown in fig. 1, so as to perform cleaning operation; after the cleaning operation of the range hood is finished, the storage box 81 is detached from the fume collecting hood 2, and the oil cup 5 is connected with the connecting structure of the fume collecting hood 2, as shown in fig. 10.

Above-mentioned scheme, the dismantlement of storage box 81 is more convenient, the transportation of being convenient for, and need not change original range hood's structure and reserve installation space or set up mounting structure for storage box 81 for it is also easier to carry out structural improvement to current range hood.

Referring to fig. 11 to 14, the hook 21 includes a first mounting plate 211, a second mounting plate 212, a first connecting plate 213 and a second connecting plate 214, the first mounting plate 211 is fixed below the fume collecting hood 2 and is horizontally disposed, the second mounting plate 212 is spaced from the first mounting plate 211 in parallel, the second mounting plate 212 is connected to the first mounting plate 211 by the first connecting plate 213 and the second connecting plate 214, the first connecting plate 213 and the second connecting plate 214 are both vertically disposed and are respectively located on a front edge and a rear edge of the second mounting plate 212, the length of the first connecting plate 213 is smaller than that of the first mounting plate 211 and smaller than that of the second mounting plate 212, the length of the second connecting plate 214 is greater than that of the first connecting plate 213, the lower surface of the first mounting plate 211, one side edge of the first connecting plate 213, the upper surface of the second mounting plate 212 and the surface of the second connecting plate 214 opposite to the first connecting plate 213 form a hanging port 210; correspondingly, the first hanging part on the oil cup 5 and the second hanging part 811 on the storage box 81 are both hanging plates, and taking the cleaning box as an example, the hanging plates are horizontally arranged at the top edge of the storage box 81, and the hanging plates can be inserted into the hanging ports 210 along the horizontal direction. In fig. 12, the first connecting plate 213 is located at the middle position of the first mounting plate 211 along the length direction, and is located at the middle position of the second mounting plate 212 along the length direction, that is, the two hanging ports 210 can be formed to meet the mounting requirements of different oil cups 5.

Of course, the hook 21 may also be an L-shaped plate installed below the smoke collecting hood 2, the hook 21 is bent upward to form a hanging groove, the first hanging part on the oil cup 5 and the second hanging part 811 on the cleaning box are also L-shaped plates, both the first hanging part and the second hanging part 811 are bent downward, and the downward bent partial plates in the first hanging part and the second hanging part 811 can be inserted into the hanging groove.

The storage box 81 may have a similar structure to the oil cup 5, such as a circular storage box, a strip-shaped storage box, and the like, and the storage box 81 shown in fig. 7 has a long strip shape. Of course, the storage box 81 may be replaced with a storage cup having a storage function.

Based on the above solution, referring to fig. 5 and 7, the cleaning assembly 8 further comprises a pump 84, and the pump 84 can pump the cleaning solution 100 in the storage box 81 into the volute 61, which is suitable for the solution that the storage box 81 is installed at the installation position of the oil cup 5.

The pump 84 may be installed in the windbox 1 outside the volute 61, and the pump 84 may be fixed below the volute 61 or above the volute 61. Fig. 1 shows a scheme that the pump 84 is fixed above the volute 61, the structure is compact, and the pump 84 does not influence the air intake of the fan 6.

Referring to fig. 6, connection pipe 82 is installed between the back plate of wind box 1 and scroll casing 61 and extends in the vertical direction, but may be provided between the side plate of wind box 1 and scroll casing 61 according to connection pipe 82. Specifically, the connecting pipe 82 can be arranged nearby according to the installation position of the oil cup 5, so that the overlong connecting pipe 82 is avoided. The connecting pipe 82 may be a hard pipe or a hose.

When the storage box 81 is coupled with the hood 2, the lower end of the connection duct 82 is located inside the storage box 81, as shown in fig. 1; and when the oil cup 5 is engaged with the smoke collecting hood 2, the lower end of the connecting duct 82 is located above the oil cup 5 as shown in fig. 10.

Referring to fig. 15, an embodiment of the present application further includes a cleaning control method for the range hood in the above embodiment, where when the storage box bearing the cleaning solution is connected to the connection structure, the cleaning control method for the range hood includes:

step S101: a purge instruction is received. The cleaning instruction may be an electrical signal sent to a controller by a user pressing a cleaning button (the cleaning button may be a mechanical button on a control panel or a virtual button on a touch panel), and the controller is a general controller of the range hood or an independent controller used for executing a cleaning operation alone.

Step S102: the oil leakage port is closed by the control valve, and the cleaning liquid in the storage box is injected into the volute by the pump. The controller sends a control instruction to the control valve, and the control valve executes an instruction for closing the oil leakage opening according to the control instruction; similarly, the controller sends a control instruction to a control panel on the pump to control the pump to start or directly control the pump to start, and the cleaning liquid in the storage box is injected into the volute through the connecting pipeline.

Step S103: and when the cleaning liquid in the volute reaches a preset water level, controlling the pump to be closed.

Step S104: and controlling the operation of the ultrasonic transducer and the starting of a motor of the fan. The controller controls the operation of the ultrasonic transducer and the starting of the motor of the fan.

The technical effect that the cleaning control method of the embodiment of the application can obtain is the same as that of the range hood in the embodiment, and the cleaning control method and the range hood can solve the same technical problem, and are not repeated here.

In the above method, when the cleaning liquid in the volute reaches the preset water level, the pump is turned off specifically including:

the pump is controlled to be turned off when the pump running current indicates that the pump is in an idle state.

The controller can directly know whether the cleaning liquid in the storage box is completely led into the volute according to the running current of the pump without arranging other detection devices, and the control method is simple and has low cost. Of course, the controller that drives the operation of the pump may be a separate electronic control board. The control module for driving the pump to operate is integrated in the master controller of the range hood, so that the installation space can be saved.

The above-mentioned mode of controlling the operation of ultrasonic transducer and the motor start-up of fan has the multiple, if control ultrasonic transducer operation, controls the motor and rotates with predetermineeing the rotational speed simultaneously. For another example, after the ultrasonic transducer is controlled to operate for a first preset time, the motor is controlled to drive the impeller of the fan to rotate for a preset angle.

And selecting proper values for the preset rotating speed and the preset angle according to specific working conditions. For example, the preset rotation speed is 1r/min (revolution/minute), the preset angle is 60 degrees, and the first preset time is 5-10 min. In the process of executing a cleaning instruction, controlling the ultrasonic transducer to operate, and simultaneously controlling the motor to rotate the impeller at 1 r/min; or after the ultrasonic transducer is controlled to operate for 5-10 min, the ultrasonic transducer is closed, the motor is controlled to drive the impeller of the fan to rotate for 60 degrees, and then the ultrasonic transducer is controlled to operate again.

With continued reference to fig. 15, the above-described purge control method further includes:

step S105: and after the running time of the ultrasonic transducer and the starting time of the motor of the fan reach second preset time, controlling the ultrasonic transducer and the motor to stop running, and controlling the valve to open the oil leakage port. The value of the second preset time is 15 minutes; of course, the preset time can be selected according to actual needs, and is not limited herein.

Step S106: and sending an instruction for reminding the end of the cleaning program after the opening time reaches the preset time.

After cleaning is finished, the cleaning control method can remind a user of dumping used cleaning liquid in time and installing an oil cup.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

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

Claims

1. A range hood, comprising:

an air box;

the fan is installed in the air box and comprises a volute and an impeller positioned in the volute, and an oil leakage port is formed in the bottom of the volute;

the control valve is installed at the oil leakage port and used for controlling the opening or closing of the oil leakage port;

the cleaning assembly comprises an ultrasonic transducer, a connecting pipeline and a storage device used for bearing cleaning liquid, wherein the ultrasonic transducer is installed at the bottom of the volute, one end of the connecting pipeline is communicated with the volute, the other end of the connecting pipeline is communicated with the storage device, and the connecting pipeline can inject the cleaning liquid in the storage device into the volute.

2. The range hood of claim 1, further comprising:

the smoke collecting cover is arranged below the air box, a smoke collecting cavity is formed in the smoke collecting cover, and a connecting structure is arranged on the smoke collecting cover;

the smoke guide plate is arranged in the smoke collection cavity;

the oil cup is positioned below the smoke guide plate and can be detachably connected with the connecting structure of the smoke collecting cover;

the cleaning assembly further comprises a pump, the pump can pump cleaning liquid in the storage device into the volute, and when the oil cup is detached from the connecting structure of the fume collecting hood, the storage device can be detachably connected with the connecting structure.

3. The range hood of claim 2, wherein the connection structure is a hook, and the oil cup and the storage device are both formed with hanging parts engaged with the hook.

4. The range hood of claim 1, wherein the control valve is a solenoid valve.

5. The range hood of claim 2, wherein the connection between the connection pipe and the volute is located at an upper portion of the volute, and the pump is installed between an outer side of the upper portion of the volute and the wind box.

6. The range hood of claim 1, wherein there are two ultrasonic transducers, and the two ultrasonic transducers are respectively located at two sides of the oil leakage port.