CN109099480A

CN109099480A - Range hood and its method, cleaning device and storage medium

Info

Publication number: CN109099480A
Application number: CN201811043175.5A
Authority: CN
Inventors: 秦兴元; 杨星星; 方云超; 季俊生
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2018-05-21
Filing date: 2018-09-07
Publication date: 2018-12-28

Abstract

The application embodiment provides a kind of cleaning device and cleaning method for range hood, belongs to household appliance technical field.Range hood includes spiral case, wind wheel and motor, and cleaning method includes: that cleaning solution is injected into spiral case；Control wind wheel rotation；Detect the liquid level of cleaning solution；Judge whether liquid level reaches the first predetermined fluid level；In the case where judging that liquid level reaches the first predetermined fluid level, reduces wind speed round or stall wind wheel；Judge whether liquid level reaches the second predetermined fluid level, the second predetermined fluid level is higher than the first predetermined fluid level；In the case where judging that liquid level reaches the second predetermined fluid level, stop injection cleaning solution, and controls wind wheel and at least rotated along a rotation direction intermittence；And cleaning solution is discharged from spiral case.Through the above technical solutions, first can carry out prerinse in the cleaning process of range hood to spiral case and wind wheel before formal cleaning, better cleaning effect can be played.

Description

Range hood and its method, cleaning device and storage medium

Technical field

This application involves fields of home appliance technology, and in particular, to a kind of to fill for the method for range hood, cleaning It sets, range hood and storage medium.

Background technique

Range hood in kitchen environment using to remove soot gas, when range hood long-term work for a period of time after, A large amount of greasy dirt can be accumulated on the inner wall of its spiral case, the surface of wind wheel, greasy dirt, which will lead to load, to be increased, noise increase, reduce and inhale Oil smoke effect.In the related technology, the cleaning device of range hood is limited to the cleaning effect of range hood, and there are rooms for improvement.

Summary of the invention

The purpose of the application embodiment is to provide a kind of cleaning method and cleaning device for range hood.

To achieve the above object, the application's in a first aspect, providing a kind of cleaning method for range hood, the suction Kitchen ventilator includes spiral case, the wind wheel being mounted in the spiral case and the motor for driving the wind wheel rotation, the cleaning side Method includes: to inject cleaning solution into the spiral case；Control the wind wheel rotation；Detect the liquid level of the cleaning solution；Described in judgement Whether liquid level reaches the first predetermined fluid level；In the case where judging that the liquid level reaches first predetermined fluid level, institute is reduced It states wind speed round or stalls the wind wheel；Judge whether the liquid level reaches the second predetermined fluid level, wherein described second is predetermined Liquid level is higher than first predetermined fluid level；In the case where judging that the liquid level reaches second predetermined fluid level, stop note Enter the cleaning solution, and controls the wind wheel and at least rotated along a rotation direction intermittence；And by the cleaning solution from described It is discharged in spiral case.

Optionally, the reduction wind speed round includes: to reduce the wind speed round according to the liquid level detected.

Optionally, cleaning method further include: during injecting the cleaning solution into the spiral case, by the cleaning Liquid is heated to predetermined temperature.

Optionally, cleaning method further include: after the spiral case is discharged in the cleaning solution, control the wind wheel most Big gear rotates scheduled duration.

Optionally, controlling the wind wheel in maximum gear rotation scheduled duration further comprises: controlling the wind wheel most Big gear inverts the scheduled duration.

In the second aspect of the application, a kind of cleaning device for range hood is provided, the range hood includes snail Shell, the wind wheel being mounted in the spiral case and the motor for driving the wind wheel rotation, which is characterized in that the cleaning dress Setting includes: cleaning jet pipe, for injecting cleaning solution into the spiral case；One end connection of feed pipe, the feed pipe is described clear Jet pipe is washed, the other end can connect cleaning solution source；Water supply control valve is arranged at the feed pipe, for controlling the water supply The on-off of pipe；Return pipe, one end of the return pipe are connected to the spiral case bottom, for the cleaning solution to be discharged；Return water Control valve is arranged at the return pipe, for controlling the on-off of the return pipe；Liquid level detection unit, it is described for detecting The liquid level of cleaning solution；And controller, the controller are configured to: in the case where starting cleaning operation, being given described in control Water control valve is opened, to inject cleaning solution into the spiral case；The liquid level is obtained from the liquid level detection unit；Described in judgement Whether liquid level reaches the first predetermined fluid level；In the case where judging that the liquid level reaches first predetermined fluid level, institute is reduced It states wind speed round or stalls the wind wheel；Judge whether the liquid level reaches the second predetermined fluid level, second predetermined fluid level Higher than first predetermined fluid level；In the case where judging that the liquid level reaches second predetermined fluid level, given described in control Water control valve is closed to stop injecting the cleaning solution, and is controlled the wind wheel and at least rotated along a rotation direction intermittence；With And the control water-returning control valve is opened, and the cleaning solution is discharged from the spiral case.

Optionally, the controller is further configured to reduce the wind speed round according to the liquid level detected.

Optionally, cleaning device further includes heating device, is configured to injecting the cleaning solution into the spiral case In the process, the cleaning solution is heated to predetermined temperature.

Optionally, the controller is further configured to after the spiral case is discharged in the cleaning solution, controls the wind Wheel rotates scheduled duration in maximum gear.

In the third aspect of the application, provide a kind of range hood, including spiral case, the wind wheel being mounted in the spiral case with And the motor for driving the wind wheel rotation, wherein the range hood further includes that the above-mentioned cleaning for range hood fills It sets.

In the fourth aspect of the application, a kind of storage medium is provided, computer-readable instruction is stored thereon with, the computer It enables the processor to execute the above-mentioned cleaning method for range hood when readable instruction is executed by processor.

Through the above technical solutions, can in the cleaning process of range hood, before formal cleaning first to spiral case and Wind wheel carries out prerinse, can play better cleaning effect.

The other feature and advantage of the application embodiment will the following detailed description will be given in the detailed implementation section.

Detailed description of the invention

Attached drawing is to further understand for providing to the application embodiment, and constitute part of specification, with Following specific embodiment is used to explain the application embodiment together, but does not constitute the limit to the application embodiment System.In the accompanying drawings:

Fig. 1 shows the structural schematic diagram of the cleaning device of traditional range hood；

Fig. 2 shows the flow charts according to the cleaning method for range hood of presently filed embodiment；

Fig. 3 shows the structure of the range hood according to presently filed embodiment and the cleaning device for range hood Schematic diagram；

Fig. 4 shows the function of the component relevant to heating function in the cleaning device according to presently filed embodiment Block diagram；

Fig. 5 shows the connection between the controller, driving circuit and motor of an embodiment according to the application Relational graph；And

Fig. 6 shows the functional block diagram of the cleaning device for range hood according to presently filed embodiment.

Specific embodiment

It is described in detail below in conjunction with specific embodiment of the attached drawing to the application embodiment.It should be understood that The specific embodiments described herein are only used for describing and explaining the application embodiment, are not intended to limit this application implementation Mode.

In this application, in the absence of explanation to the contrary, the noun of locality used such as " above/above and below/under, The left side/left side, the right/right side " is typically referred to referring to upper and lower, left and right shown in the drawings." inside and outside " typically refers to relative to each Component profile itself it is inside and outside.

The term " rotating forward " used in this application refers to turn with wind wheel when range hood normal work (i.e. fume-exhausting) The dynamic identical rotation in direction, term " reversion " refer to the rotation opposite with rotating forward.Term " the rotating forward side used in this application To " refer to rotation direction identical with the rotation direction of wind wheel when range hood normal work (i.e. fume-exhausting), term " reversion " Refer to the rotation direction opposite with forward rotation direction.

Fig. 1 shows the structural schematic diagram of the cleaning device of traditional range hood.As shown in Figure 1, range hood 100 Cleaning device may include spiral case 101, wind wheel 105, the motor (not shown) for driving wind wheel, inlet pipeline 106, with Inlet pipeline 106 be connected to water inlet 104, outlet pipeline 107, the control valve 103 being connected to 101 bottom of spiral case and with control The pump housing 108 that valve 103 processed is connected to outlet pipeline 107.Installation cavity 102 can be limited in spiral case 101, wind wheel 105 can be rotated Ground is located in installation cavity 102.The blade around 105 periphery of wind wheel can be set on wind wheel 105.Motor can drive wind wheel 105 rotations.Range hood 100 can also include containing lubricating cup, carry out the oil generated when fume-exhausting operation for collecting range hood Drop.When needing to clean range hood 100, traditional mode is that a certain amount of water is injected into spiral case 101, is then controlled The rotation of motor driven wind wheel 105 a period of time processed after the washing, will to clean to wind wheel 105 and 101 inner wall of spiral case Water discharge.The cleaning effect of this traditional cleaning way is not satisfactory, and there are rooms for improvement.

Generally, it may include following several stages for the cleaning method of range hood: injecting " the adding water " of cleaning solution Stage rotates the wash phase of wind wheel, and " draining " stage of cleaning solution is discharged, and continues to rotate the air-dried stage of wind wheel.

In the embodiment of the application, proposing can begin to rotate in " the adding the water stage " of injection cleaning solution Wind wheel adjusts wind speed round as the liquid level of the cleaning solution of injection increases to carry out " prerinse ".

Specifically, Fig. 2 shows the flow charts according to the cleaning method for range hood of presently filed embodiment. With reference to Fig. 2, in presently filed embodiment, cleaning method be may comprise steps of.

In step S210, cleaning solution is injected into the spiral case of range hood.Cleaning solution may include being suitable for cleaning snail The fluid of shell and/or wind wheel, including but not limited to, water, contains the liquid, preceding for removing stain/go oil component at the water for being added to detergent State other forms, such as mist, vaporous etc. of object.Cleaning solution can be injected into spiral case using various ways.In this Shen In an embodiment please, inlet (such as nozzle or spray head) can be set in spiral case.Inlet can be set in snail Any position inside shell.In one example, the top in spiral case can be set in inlet.In another example, into The bottom in spiral case can be set in liquid mouth.In another example, multiple inlets can be used, be separately positioned in spiral case Different location, such as top, bottom or any other positions.Inlet can be connected to inlet pipeline, and inlet pipeline can be with It is connected to cleaning solution source.In one example, cleaning solution source can be water system, such as running water valve or tap, will intake Piping connection can inject water to running water valve or tap into spiral case.In another example, a container can be provided, Such as water box (or water holding box).When being cleaned, cleaning solution can be poured into water box.Inlet pipeline can connect Cleaning solution in water box, is pumped into inlet pipeline by water pump and is then injected into spiral case clearly by inlet by water flowing pump Clean liquid.The mode of these injection cleaning solutions is only exemplary, and one of ordinary skill in the art are understood that can also there is others Mode injects cleaning solution into spiral case, such as the desired amount of cleaning solution directly can be injected into spiral case using utensil is filled with water.

In the further embodiment of the application, the cleaning solution being injected into spiral case can be heated.One In a example, heating element can be set in inlet pipeline, the cleaning solution for being injected into spiral case is added by heating element Heat.In another example, heating element can be set on spiral case, to heat to the cleaning solution being injected into spiral case. In further example, heating element may include the heat exchanger tube at least about spiral case bottom.The thermal medium of heat exchanger tube can be with Steam generator from range hood.Spiral case bottom-heated can be given by heat exchanger tube, to add to the cleaning solution in spiral case Heat.Cleaning solution after heating is more able to ascend the cleaning effect of cleaning solution.The range of the temperature of the cleaning solution of heating for example can be with It is 40 degrees Celsius to 80 degrees Celsius, preferably 60 degrees Celsius.

In step S220, control wind wheel rotation.The opportunity of control wind wheel rotation can start to inject into spiral case When cleaning solution, can also into spiral case inject cleaning solution during some suitable time point, possibly even opening Begin to inject the time point before cleaning solution into spiral case.Specifically, in some embodiments, cleaning solution can be out of spiral case Top area inject (such as nozzle from the top area being arranged in spiral case), the cleaning solution of injection can be it is liquid, It is also possible to mist.Wind wheel can be rotated during injecting cleaning solution, to rotate wind wheel after cleaning solution injection is completed It is " formal " cleaning before can carry out " prerinse ", wind wheel can integrally be moistened.The main purpose of the step can be by Wind wheel integrally moistens, therefore the revolving speed of wind wheel may not necessarily quickly, such as 60 to 300 revs/min.Control motor electricity can be passed through The voltage at pivot both ends controls the revolving speed of motor.Wind wheel rotation may include forward or reverse.

In step S230, detection is injected into the liquid level of the cleaning solution of spiral case.It can there are ways to detect cleaning solution Liquid level.In the embodiment of the application, liquid level sensor can be set.For example, liquid can be arranged in spiral case bottom Level sensor, for detecting the liquid level for being injected into the cleaning solution of spiral case.Liquid level sensor can be to controller (such as range hood Micro-control unit (Microcontroller Unit；MCU) or other relevant control unit) send liquid level information, when When being injected into the liquid level of the cleaning solution of spiral case and reaching predetermined fluid level, controller can close inlet pipeline (such as control water inlet pipe Solenoid valve in road is closed).Type, structure and its function of liquid level sensor are known to one of ordinary skill in the art, to keep away Exempt from liquid level sensor not to be described in detail in this application so that the application embodiment wants point fuzziness, but institute Category field technical staff is appreciated that any type of liquid level sensor that can be realized present invention design should also be as belonging to In scope of the present application.It, can be by detecting the cleaning solution being injected into spiral case in the another embodiment of the application Flow determines the liquid level of cleaning solution.In one example, flow sensor can be set.For example, flow sensor can be examined The flow of cleaning solution of the flow measurement through inlet pipeline.Since the volume of spiral case bottom can learn that cleaning solution is located at snail in advance The corresponding relationship of the amount of the liquid level and cleaning solution of shell bottom can be previously obtained (or determination).It is clear to spiral case injection when starting When clean liquid, flow sensor can detecte the flow of the cleaning solution injected to spiral case, and feed back flow information to controller.Control Device can calculate the amount for being injected into the cleaning solution of spiral case according to the flow information of feedback, and can be according to the amount and liquid of cleaning solution The corresponding relationship of position obtains the liquid level of cleaning solution.When the liquid level of cleaning solution is to preset value, controller can close inlet pipeline. Type, structure and its function of flow sensor are known to one of ordinary skill in the art, to avoid so that the application embodiment party Formula wants point fuzziness, is described in detail in this application without flow sensor, but one of ordinary skill in the art can be with Understand, any type of flow sensor that can be realized present invention design should also be as belonging to scope of the present application.

In step S240, judge whether liquid level reaches the first predetermined fluid level.

In step s 250, in the case where judging that liquid level reaches the first predetermined fluid level, wind speed round is reduced.Specifically, Liquid level locating for cleaning solution when the liquid level that first predetermined fluid level can be cleaning solution has just contacted wind wheel bottommost blade.Work as cleaning solution Liquid level continue rise when, wind wheel can increasing by the resistance of cleaning solution, if holding wind speed round it is constant, it means that The power of motor will increase.In the embodiment of the application, reach the first predetermined fluid level situation in the liquid level of cleaning solution Under, wind speed round is reduced according to liquid level.In this embodiment, the mapping relations between liquid level and revolving speed can be preset (respectively for rotating and reverse, mapping relations can be different), obtain rotating speed of target according to the liquid level and mapping relations that detect, Motor speed can be adjusted by adjusting the voltage of armature, to adjusting wind speed round to rotating speed of target.In this Shen In additional or alternative embodiments please, wind speed round can be reduced according to the size of the electric current of armature.Specifically, As liquid level rises, the resistance that cleaning solution applies to the wind wheel of rotation can be increasing, if wind speed round remains unchanged, electricity The voltage of armature remains unchanged, but the output power of motor will increase, and thus the electric current of armature will increase.In order to avoid Output power of motor becomes larger or motor is maintained at firm power, can detecte the electric current of armature, and according to electric current The voltage (electric current is bigger, and voltage is smaller) of big minor adjustment armature, thus reduces motor speed, to reduce wind speed round. In the alternative embodiments of the application, in the case where detecting that the liquid level of cleaning solution reaches the first predetermined fluid level, wind wheel It stops operating.Specifically, it in the case where the liquid level of cleaning solution reaches the first predetermined fluid level, is powered off to motor.

In step S260, judge whether liquid level reaches the second predetermined fluid level, the second predetermined fluid level is higher than the first predetermined liquid Position.Second predetermined fluid level can at least guarantee the effect that cleaning is played to wind wheel and spiral case.Usually to wind wheel and spiral case Cleaning be to stir the cleaning solution in spiral case by rotation wind wheel to be cleaned, therefore the cleaning solution injected is at least wanted can to soak Do not have a part of wind wheel.In the embodiment of the application, the cleaning solution of injection can be required in the liquid level of spiral case bottom (the second predetermined fluid level) is at least not less than the distal end on wind wheel in the both ends of the blade of bottommost relative to spiral case bottom, that is, It says, the cleaning solution of injection can at least be totally submerged the blade of bottommost.In the another embodiment of the application, injection Cleaning solution (the second predetermined fluid level) can also only submergence bottommost blade a part, such as blade half, three points First-class.

In step S270, in the case where judging that liquid level reaches the second predetermined fluid level, stop injection cleaning solution, and control Wind wheel processed is at least rotated along a rotation direction intermittence.

In step S280, cleaning solution is discharged from spiral case.Specifically, wind wheel rotation can be controlled in step S270 Cleaning solution is discharged from spiral case after a period of time.It specifically, can be after executing step S270 and reaching scheduled duration, by cleaning solution It is discharged from spiral case.Scheduled duration may be set according to actual conditions.For example, pre- timing can be set according to the effect of cleaning It is long.For another example cleaning effect and power consumption can be taken into account to set scheduled duration.The mode that cleaning solution is discharged from spiral case can be with There are many.In one example, pump can be used to extract the cleaning solution after the completion of cleaning from spiral case out.In another example In, outlet valve, such as solenoid valve can be set in spiral case bottom.In the process of cleaning, outlet valve remains turned-off.When needing to be discharged When cleaning solution, control outlet valve is opened so that cleaning solution to be discharged from spiral case.The cleaning solution of discharge (such as can be filled with water with container Case or water holding box) it contains, or connection drainage pipeline is exhausted directly to sewer.In addition, in the embodiment of the application, When cleaning solution is discharged from spiral case, wind wheel is no longer rotated.That is, motor is maintained at off-position.

In the additional or alternative embodiments of the application, cleaning method, which can also be included in, is discharged spiral case for cleaning solution Later, control wind wheel rotation.In cleaning solution after being discharged in spiral case, the blade and spiral case of wind wheel can still be stained with a small amount of clear Clean liquid, control wind wheel are continued to rotate and can both be thrown away the cleaning solution being attached on wind wheel by centrifugal force, can also suck sky Gas generates moving air in spiral case, accelerates air-drying for remaining cleaning solution.It is clear in discharge in the embodiment of the application After clean liquid, it can control wind wheel and rotate forward a scheduled duration (for example, 1 minute, 2 minutes etc.).For example, can control wind wheel most Big gear (i.e. maximum setting speed) rotates forward scheduled duration.In the another embodiment of the application, discharge cleaning solution it Afterwards, it can control wind wheel reversion one scheduled duration (for example, 1 minute, 2 minutes etc.).For example, can control wind wheel in maximum gear (i.e. maximum setting speed) reversion scheduled duration.

It may include at least various modes along rotation direction intermittence rotation that wind wheel is controlled in step S270.Traditional The cleaning way of range hood is that wind wheel persistently rotates, and the cleaning solution of agitation spiral case bottom cleans spiral case inside, and The grease stain being attached on wind wheel is got rid of under the action of centrifugal force.But traditional mode comes with some shortcomings.Wind wheel persistently rotates, The time that each blade on wind wheel is contacted with cleaning solution duration is too short, cause cleaning solution especially contain deoil/go stain The cleaning solution of ingredient deoil/go stain effect it is insufficient.And wind speed round is too fast, may be such that cleaning solution in spiral case from Air inlet splashes out and pollutes hearth, and wind speed round is too low, and cleaning effect is undesirable.And presently filed embodiment is using between wind wheel The mode of having a rest property rotation, the time that each blade on wind wheel can be made to contact with cleaning solution duration is longer, thus clearly The effect of the stain of deoiling/go of clean liquid can play more sufficiently.

Specifically, the rotation of wind wheel intermittence can be controlled by control motor.In the certain embodiments of the application, The motor of range hood can be direct current generator.It may be implemented by being powered to direct current generator intermittent (discontinuously) to wind wheel The control of intermittence rotation.

The rotation of wind wheel intermittence may include various modes.In the first example modes, wind wheel can control along rotating forward Direction rotation (rotates forward) first time period, rotates (i.e. just by second time period and then control wind wheel along forward rotation direction Turn) first time period.That is, wind wheel is placed in nature (that is, not after control wind wheel rotates forward first time period Slave mode) second time period, by control wind wheel rotates forward first time period again again after second time period.It can be so anti- Multiple operation, to realize that wind wheel intermittence rotates forward.

Above-mentioned example modes can be realized by controlling the conduction time for driving the motor of wind wheel.Specifically, Period electrical power first time can be given, so that motor driven wind wheel rotates forward an angle, power off, passing through to motor later Second time period and then give period electrical power first time, thus wind wheel rotates forward an angle again.It can repeat this behaviour Make, is achieved in wind wheel " intermittence " rotating forward.The value of period first time and second time period can be according to practical application feelings Shape determines.In practical applications, since the architectural characteristic of motor and wind wheel is (for example, the blade on wind wheel has blade angle (that is, angle between the line tangent line and peripheral speed of blade), the resistance that the resistance ratios that wind wheel is subject to when rotating forward are subject to when inverting Greatly), after powering off to motor, the wind wheel of rotating forward can be turned round since the resistance applied by cleaning solution can taper off rotating forward (reversion) certain angle.In this way, cleaning solution is also other than it can increase the time of each blade and cleaning solution continuous contact Further the tow sides of blade can be washed away, thus further promote cleaning effect.

In presently filed embodiment, period first time be may range from 1 second to 5 seconds, second time period It may range from 2 seconds to 10 seconds.In the preferred embodiment of the application, period first time can be less than week the second time Phase, the time that some blades of wind wheel can be enabled persistently to be immersed in cleaning solution in this way are relatively longer.In addition, in this Shen In embodiment please, the setting speed of wind wheel rotating forward may range from 100 revs/min to 900 revs/min, in the application In preferred embodiment, the setting speed that wind wheel rotates forward can be 500 revs/min.

In the another embodiment of the application, it can be controlled by setting timer to electrical power and power-off Time, i.e. period first time and second time period.For example, predetermined time value can be preset to timer, work as control Device controls when the motor is energized, and timer starts and start timing, can be to when the timing of timer reaches predetermined time value Controller sends trigger signal, can stop when controller receives trigger signal to electrical power, and under waiting timer One trigger signal.In one example, single timer can be used and to two predetermined time value of single timer setting, When the timing of timer reaches a last predetermined time value, timer resets and restarts time-count cycle.For example, with Period first time can be 3 seconds, and second time period can be for 5 seconds.Two predetermined time value can be set separately For 3 seconds and 8 seconds, when controller control start to electrical power (such as controller can control motor circuit loop in can Control switches on-off) when, controller triggering timer starts timing.When the timing of timer reaches 3 seconds, sent to controller Trigger signal, controller controls when receiving the trigger signal to be powered off to motor.When the timing of timer reaches 8 seconds, again Trigger signal is sent to controller.It controls again again when controller receives the trigger signal to electrical power.At this point, timer It resets and resets, restart timing, to carry out next circulation.In another example, two timer difference can be used Timing is carried out to period first time and second time period.Can also be for 3 seconds with period first time, second time period can For thinking 5 seconds.Predetermined time value can be set for first timer as 3 seconds, make a reservation for for second timer setting Time value is 5 seconds.When controller starts when the motor is energized, controller triggers first timer and starts timing.When first When the timing of timer reaches 3 seconds, trigger signal is sent to controller, controller controls when receiving the trigger signal to motor Power-off.Second timer is also triggered and starts timing at this time.When the timing of second timer reaches 5 seconds, to control Device sends trigger signal, controls again again when controller receives the trigger signal to electrical power.At this point, first timer It resets to reset and simultaneously starts timing, and second timer is only resetted and is reset but not-time.There is still a need for wait until second timer First timer just starts timing when sending trigger signal.Triggering timer starts timing and reset is reset and the two The mode of interaction between timer and controller is technology known to the field technical staff, right in the application embodiment This is repeated no more.

Inventors have found that, every time to after the of short duration energization of motor, wind wheel can edge after injecting the desired amount of cleaning solution in spiral case First rotation direction (forward rotation direction) rotates a low-angle, then along one big angle of the second rotation direction (reversion is reversed) revolution Degree.For this phenomenon, inventor contemplates a kind of preferred embodiment, it is only necessary to give motor intermittent of short duration energization, lead to All blades of wind wheel and " immersion " process of cleaning solution can be completed by crossing wind wheel revolution wide-angle.Only need suitably selected A period of time and second time period can realize above-mentioned purpose.For example, period first time cannot be too short, if first Time cycle is too short, and due to the inertia of wind wheel, motor may can't drive wind wheel to rotate within very short conduction time.First Time cycle can not be too long, if first time excessive cycle, the angle that motor driven wind wheel rotates forward is excessive, is also unable to reach Above-mentioned purpose.The selection of second time period can guarantee that the angle that wind wheel turns round after motor powers off is greater than what wind wheel rotated forward Angle.In addition, inventor also found, first time excessive cycle, the i.e. overlong time of electrical power, on wind speed round It rises, cleaning solution flies away from wind wheel under the action of the centrifugal force, causes wind wheel top to have cleaning solution drippage, influences use feeling.Therefore Consider these factors, a critical value can be selected for period first time, is i.e. the critical value can make after electrical power both Wind wheel can be driven to rotate forward, and be avoided that cleaning solution drippage is arranged at wind wheel top.In the preferred embodiment of the application, this faces Dividing value can be 1 second, i.e. period first time can be 1 second, and correspondingly, second time period can be 3 seconds.

It can be set for determining that wind wheel intermittence rotates forward the condition that operation is completed.In the embodiment of the application In, the operating time that wind wheel intermittence rotates forward operation can be set, when wind wheel intermittence, which rotates forward operation, reaches the operating time, It can determine that wind wheel intermittence rotates forward operation and completes.The wind wheel intermittence rotation of the first example modes can also be included in wind In the case that the intermittent rotating forward operation of wheel reaches scheduled duration, determine that the rotation operation of wind wheel intermittence is completed.The scheduled duration Range for example can be 3 to 15 minutes, preferably 9 minutes.

In the another embodiment of the application, circle number needed for wind wheel intermittence rotates forward operation can be set, work as wind When the circle number of wheel rotation reaches the required circle number, it can determine that wind wheel intermittence rotates forward operation and completes.The first example modes Wind wheel intermittence rotation can also include wind wheel intermittence rotate forward operating process apoplexy wheel rotation circle number reach predetermined circle In the case where number, determine that the rotation operation of wind wheel intermittence is completed.The range of the pre- fixing turn can be for example 2 to 10 circles, preferably For 6 circles.

In one example, rotary encoder can be used to detect the circle number of wind wheel rotation.The example of rotary encoder It can include but is not limited to photoelectric rotary coder, magneto-electric rotary encoder and contact brushes formula rotary encoder.It is affiliated It is also applicatory that field technical staff, which is appreciated that other are able to detect or measure the device of wind wheel rotating cycle,.In this Shen It, can be in conjunction with the operating time and turnning circle that wind wheel intermittence rotates forward in other embodiments please.In one example, wind The intermittent rotation of wheel can also include judging that wind wheel intermittence rotates forward whether operation reaches scheduled duration, and judge in wind wheel interval Property rotate forward operating process apoplexy wheel rotation circle number whether reach pre- fixing turn, if the two conditions judgement in any one Judging result be yes, it is determined that wind wheel intermittence rotate forward operation complete.In another example, the two conditions is needed to judge Judging result be all it is yes, just determine wind wheel intermittence rotate forward operation complete.

In the further embodiment of the application, the first example modes can also include that control wind wheel persistently rotates. Specifically, after wind wheel intermittence rotates forward operation completion, control wind wheel persistently rotates a scheduled duration.The model of the scheduled duration Enclosing for example to be 1 to 5 minute, preferably 3 minutes.After intermittent before rotate forward to wind wheel progress " immersion ", wind wheel is held Continuous rotation can under the influence of centrifugal force throw away the grease stain being attached on wind wheel or spot, and thus, it is possible to preferably clean wind Wheel.In one example, the revolving speed of duration rotation can be faster than the revolving speed that intermittence rotates forward, and revolving speed can provide bigger fastly Centrifugal force.But one of ordinary skill in the art are appreciated that the revolving speed of duration rotation needs not necessarily be limited to rotate forward than intermittence Revolving speed it is fast, in other examples, the revolving speed of duration rotation can be less than or can be equal to the intermittent revolving speed rotated forward.

In presently filed embodiment, duration rotation may include various modes.In the first mode, duration Rotation can rotate forward for duration.In second of mode, duration rotation can invert for duration.In the third mode In, duration rotation can rotate forward a period of time for first duration, then persistently sex reversal is for a period of time.In the 4th kind of mode, Duration rotation can be first to continue sex reversal for a period of time, then duration rotates forward a period of time.Due to the blade construction of wind wheel, So that the resistance that the resistance that wind wheel encounters cleaning solution in reversion encounters when being less than and rotating forward, thus in presently filed embodiment In, the revolving speed of lasting sex reversal can be set as higher than the revolving speed that duration rotates forward.

In second of example modes of wind wheel intermittence rotation, it can control wind wheel and (inverted) along reverse directions rotation The third period (inverts) the third period along reverse directions rotation by the 4th period and then control wind wheel.Also It is to say, after the control wind wheel reversion third period, wind wheel is placed in the 4th period of nature, by the 4th period Control wind wheel inverts the third period again again later.It can so operate repeatedly, to realize wind wheel interval sex reversal.

It is similar with intermittent rotating forward, it can be by changing the direction for driving the motor both end voltage (or electric current) of wind wheel It inverts and controls the conduction time to motor controlling motor driven wind wheel and realize second of example modes.It specifically, can be with Electrical power third time cycle (i.e. reversed to be powered) is given, so that motor driven wind wheel inverts an angle, it is disconnected to motor later Electricity, by the 4th time cycle and then to the electrical power third time cycle, thus wind wheel inverts an angle again.It can be with This operation is repeated, wind wheel " intermittence " reversion is achieved in.The value of third time cycle and the 4th time cycle can bases Practical application situation determines.

In presently filed embodiment, the third time cycle be may range from 1 second to 15 seconds, the 4th time cycle It may range from 3 seconds to 15 seconds.In the preferred embodiment of the application, the third time cycle can be less than week the 4th time Phase, the time that some blades of wind wheel can be enabled persistently to be immersed in cleaning solution in this way are relatively longer.The application's In embodiment, the setting speed of wind wheel reversion may range from 100 revs/min to 900 revs/min.In addition, the institute as before It states, since the blade on wind wheel has blade angle, by cleaning solution when being rotated forward when wind wheel inverts by the resistance ratios of cleaning solution Resistance wants small, therefore the ratio intermittence rotating forward that the revolving speed of reversion can be arranged in the setting of the revolving speed of wind wheel interval sex reversal Revolving speed is big, even if will not exceedingly stir cleaning solution splashing in this way, reverse is larger.For example, at one of the application In example, the setting speed that wind wheel intermittence rotates forward can be 500 revs/min, and the setting speed of reversion can be 800 revs/min Clock.

In the embodiment of the application, can be controlled by setting timer to electrical power and power-off when Between, i.e. third time cycle and the 4th time cycle.For example, predetermined time value can be preset to timer, work as controller When the motor is energized, timer starts and starts timing, can be to control when the timing of timer reaches predetermined time value for control Device processed sends trigger signal, can stop powering off to motor when controller receives trigger signal, and waiting timer is next A trigger signal.In one example, single timer can be used and to two predetermined time value of single timer setting, when When the timing of timer reaches a last predetermined time value, timer resets and restarts time-count cycle.For example, with Three time cycles can be 5 seconds, and the 4th time cycle can be for 10 seconds.Two predetermined time value can be respectively set as 5 seconds and 15 seconds, when controller control start to electrical power (such as controller can control motor circuit loop in it is controllable Switch on-off) when, controller triggering timer starts timing.When the timing of timer reaches 5 seconds, sends and touch to controller It signals, controller controls when receiving the trigger signal to be powered off to motor.When the timing of timer reaches 15 seconds, again to Controller sends trigger signal.It controls again again when controller receives the trigger signal to electrical power.At this point, timer is multiple Position is reset, and restarts timing, to carry out next circulation.In another example, it is right respectively that two timers can be used Third time cycle and the 4th time cycle carry out timing.Can also be for 5 seconds with the third time cycle, the 4th time cycle can be with For 10 seconds.Predetermined time value can be set for first timer as 5 seconds, for second pre- timing of timer setting Between value be 10 seconds.When controller starts when the motor is energized, controller triggers first timer and starts timing.Determine when first When device timing when reaching 5 seconds, send trigger signal to controller, controller controls disconnected to motor when receiving the trigger signal Electricity.Second timer is also triggered and starts timing at this time.When the timing of second timer reaches 10 seconds, to controller Trigger signal is sent, is controlled again again when controller receives the trigger signal to electrical power.At this point, first timer is multiple Position, which is reset, simultaneously starts timing, and second timer is only resetted and reset but not-time.Second timer still needs until the One timer just starts timing when sending trigger signal.Triggering timer starts timing and reset is reset and the two are fixed When device and controller between the mode of interaction be technology known to the field technical staff, to this in the application embodiment It repeats no more.

Inventors have found that direct current generator every time after reversion is powered, will not rotate, but have a stagnation immediately, it It just starts turning afterwards.As a result, in presently filed embodiment, the third time cycle can be set based on the stagnation.Specifically Ground needs to consider the stagnation and the wind wheel practical time inverted when setting the third time cycle.For example, the stagnation Time can be 2 seconds, it is expected that the wind wheel practical time inverted is 2 seconds, then the third time cycle can be set as 4 seconds.In addition, hair Bright people also found that, if being added with foaming agent in cleaning solution, wind wheel reversing time is too long, and cleaning solution can be made to spume seriously. Consider these factors, a critical value can be selected for the third time cycle, is i.e. the critical value can make after electrical power both Wind wheel can be driven to invert, and be avoided that cleaning solution spumes seriously.In the preferred embodiment of the application, the critical value It can be 3 seconds, i.e. the third time cycle can be 3 seconds, and the 4th time cycle can be 5 seconds.In addition, tight in order to avoid spuming Weight, being adapted to property reduce the revolving speed of wind wheel interval sex reversal.In the preferred embodiment of the application, wind wheel is intermittent The setting speed of reversion can be 300 revs/min.

The condition completed for determining wind wheel intermittence reverse turn operation can be set.In the embodiment of the application In, the operating time of wind wheel intermittence reverse turn operation can be set, when wind wheel intermittence reverse turn operation reaches the operating time, It can determine that wind wheel intermittence reverse turn operation is completed.The wind wheel intermittence rotation of second of example modes can also be included in wind In the case that the intermittent reverse turn operation of wheel reaches scheduled duration, determine that the rotation operation of wind wheel intermittence is completed.The scheduled duration Range for example can be 3 to 15 minutes, preferably 9 minutes.

In the further embodiment of the application, second of example modes can also include that control wind wheel persistently rotates. Specifically, after the completion of wind wheel intermittence reverse turn operation, control wind wheel persistently rotates a scheduled duration.The model of the scheduled duration Enclosing for example to be 1 to 5 minute, preferably 3 minutes.After interval sex reversal before carries out " immersion " to wind wheel, wind wheel is held Continuous rotation can under the influence of centrifugal force throw away the grease stain being attached on wind wheel or spot, and thus, it is possible to preferably clean wind Wheel.In one example, the revolving speed of duration rotation can be faster than the revolving speed of interval sex reversal, and revolving speed can provide bigger fastly Centrifugal force.But one of ordinary skill in the art are appreciated that the revolving speed of duration rotation is needed not necessarily be limited to than interval sex reversal Revolving speed it is fast, in other examples, the revolving speed of duration rotation can be less than or can be equal to the revolving speed of interval sex reversal.

In presently filed embodiment, duration rotation may include various modes.In the first mode, duration Rotation can invert for duration.In second of mode, duration rotation can rotate forward for duration.In the third mode In, duration rotation can be first to continue sex reversal for a period of time, then duration rotates forward a period of time.In the 4th kind of mode, Duration rotation can rotate forward a period of time for first duration, then persistently sex reversal is for a period of time.Due to the blade construction of wind wheel, So that the resistance that the resistance that wind wheel encounters cleaning solution in reversion encounters when being less than and rotating forward, thus in presently filed embodiment In, the revolving speed of lasting sex reversal can be set as higher than the revolving speed that duration rotates forward.

It, can be by the first above-mentioned example modes and second in the third example modes of wind wheel intermittence rotation Example modes carry out various possible, feasible combinations.In the reality of the general plotting for embodying the third example modes of the application It applies in mode, the rotation of wind wheel intermittence may include: control wind wheel along the first rotation direction intermittence the first scheduled duration of rotation； It controls wind wheel and rotates the second scheduled duration along the second rotation direction intermittence.

Specifically, in the embodiment of the application, a kind of combination may include first carrying out as described above The intermittent of wind wheel rotate forward operation, by the first scheduled duration and/or circle number needed for reaching and then execute as described above Wind wheel intermittent reverse turn operation up to the second scheduled duration.In presently filed embodiment, the range of the first scheduled duration It such as can be 3 to 9 minutes, preferably 6 minutes.The range of second scheduled duration for example can be 3 to 9 minutes, preferably 6 points Clock.The range for the required circle number that intermittence rotates forward for example can be 2 to 6 circles, preferably 4 circles.

As described above, direct current generator has a stagnation every time after reversion is powered.In some embodiment party of the application In formula, this stagnation can be considered when being switched to interval sex reversal from intermittence rotating forward.Specifically, between last time wind wheel The complete cycle that the length of complete cycle or the second time period in circulation that having a rest property rotates forward can be rotated forward than wind wheel intermittence before Second time period in phase or circulation wants the time of a short stagnation.For example, it is assumed that second time period can be set It is 5 seconds, the time of stagnation is 2 seconds, then the second time period in the last one circulation that wind wheel intermittence rotates forward can be 3 Second, by can reversely be powered to motor after 3 seconds, to be switched to wind wheel interval sex reversal.

In the another embodiment of the application, another combination may include first carrying out wind as described above The intermittent reverse turn operation of wheel encloses number by third scheduled duration and/or needed for reaching and then executes wind as described above The intermittent of wheel rotates forward operation up to the 4th scheduled duration and/or required circle number.In presently filed embodiment, the pre- timing of third Long range for example can be 3 to 9 minutes, preferably 6 minutes.The range of 4th scheduled duration for example can be 3 to 9 minutes, Preferably 6 minutes.The range for the required circle number that intermittence rotates forward for example can be 2 to 6 circles, preferably 4 circles.

In presently filed embodiment, the revolving speed of wind wheel interval sex reversal can be greater than turn that wind wheel intermittence rotates forward Speed.

In the third example modes, after intermittence rotation, wind wheel can be rotated with duration.In wind wheel intermittence After rotation operation is completed, the duration rotation operation of wind wheel is carried out.The duration rotation operation of wind wheel can be using as before The wind wheel duration rotation mode it is one or more, details are not described herein again, to avoid unnecessary content repetition.Although The embodiment shown, which can be, first carries out intermittent rotating forward operation, then executes intermittent reverse turn operation, but fields skill Art personnel, which are appreciated that, can also first carry out intermittent reverse turn operation, then executes intermittent rotate forward and operate, therefore the implementation shown Mode is only exemplary, and is not limited the scope of the application.

Fig. 3 shows the structure of the range hood according to presently filed embodiment and the cleaning device for range hood Schematic diagram.With reference to Fig. 3, in presently filed embodiment, range hood 200 may include spiral case 2, wind wheel 3, for driving wind The motor that wheel 3 rotates and the cleaning device for cleaning range hood 200.Wherein, wind wheel 3 can be located at the spiral case of spiral case 2 In chamber.Cleaning device may include feed pipe 41 and return pipe 42.The upstream end of feed pipe 41 can connect cleaning solution source and under Trip end can connect cleaning jet pipe 47, and cleaning jet pipe 47 can protrude into spiral case 2 with spraying cleaning liquid.

In addition, in the embodiment of the application, can the spiral case bottom of range hood 200 be set with leakproofness compared with Good water storage box 9, the storage chamber of the water storage box 9 are connected to spiral case bottom cavity, and the bottom of the water storage box 9 is equipped with belt switch control The bottom end opening of valve processed, the bottom end opening connect the hose extended downwardly towards oil box 8.As it can be seen that since water storage box 9 has preferably Leakproofness, therefore to simplify the processing to spiral case 2, be conducive to when processing spiral case 2 without being sealed processing to it Improve the production efficiency of kitchen ventilator 200.

In the embodiment of the application, cleaning solution source may include the container for holding cleaning liquor, such as contain Water tank or water holding box.Water box or water holding box can be external, can also be built in the shell of range hood 200.At this In embodiment, cleaning device can also include the pump housing, for pumping the cleaning solution of splendid attire in a reservoir by feed pipe 41 Into spiral case 2.

In the another embodiment of the application, cleaning solution source may include water system, such as running water pipe.Water supply The upstream end of pipe 41 is connectable to running water pipe.In the embodiment of the application, cleaning jet pipe 47 goes out cleaning solution One end nozzle (or spray head) can be set.The effect of nozzle (or spray head) is to change the cleaning solution come out from cleaning jet pipe 47 Form, such as collection pencil, dispersed, mist etc..Any position inside spiral case 2 can be set in nozzle (or spray head). In one example, the top in spiral case 2 can be set in nozzle (or spray head).In another example, nozzle (or spray head) The bottom in spiral case 2 can be set.In another example, nozzle (or spray head) may include multiple nozzles (or spray head), The different location being separately positioned in spiral case 2, such as top, bottom or any other positions.

Cleaning solution may include the fluid suitable for cleaning spiral case 2 and/or wind wheel 3, and including but not limited to, water is added to The water of detergent, containing going stain/remove the liquid of oil component, other forms, such as mist, vaporous of aforementioned object etc..For example, In the embodiment that the upstream end of feed pipe 41 is connectable to running water pipe, cleaning solution can be water (tap water).At this In the case of kind, cleaning agent (such as comprising foaming agent) can be added, in water in addition to promote cleaning effect.Cleaning agent can wrap Including has the chemical products for going grease stain ability known to one of ordinary skill in the art.

In the embodiment of the application, the top of return pipe 42 can be connected to the spiral case bottom cavity of spiral case 2 and Bottom end can be connected to external sewage pipe.By the way that feed pipe 41 is connected to running water pipe and return pipe 42 is connected to external row Dirt pipe, user is in the cleaning process of range hood 200 without self-contained water reservoir and without voluntarily configuring cleaning solution 48, work Amount is reduced, and the cleaning efficiency of range hood 200 is also improved, to be effectively improved the usage experience of user.

In presently filed embodiment, cleaning device may include be arranged in feed pipe 41 upstream end to water management Valve 43 and the water-returning control valve 44 being arranged in return pipe 42.At this point, control water supply control valve 43 or water-returning control valve can be passed through 44 open or close is to control water for cleaning inflow or discharge range hood 200, to improve when range hood 200 cleans The degree of automation.

Specifically, cleaning device can also include controller, and the control terminal of water supply control valve 43 and water-returning control valve 44 can To be connected to controller, controller can be controlled separately 44 open or close of water supply control valve 43 and water-returning control valve.In this Shen In example please, water supply control valve 43 and water-returning control valve 44 can be solenoid valve.

Fig. 4 shows the function of the component relevant to heating function in the cleaning device according to presently filed embodiment Block diagram.In the embodiment of the application, cleaning device can also include heating device 46 and temperature-sensing element 48.Heating dress 46 are set for heating to cleaning solution, further to promote the ability of cleaning greasy dirt of cleaning solution, to promote range hood 200 Cleaning efficiency.Temperature-sensing element 48 is used to detect the temperature of the cleaning solution after heating and feeds back the temperature detected to controller 201. Controller 201 can control heating device 46 according to the temperature of feedback and cleaning solution is heated to desired temperature.The model of desired temperature Enclosing for example to be 40 degrees Celsius to 80 degrees Celsius, preferably 60 degrees Celsius.Temperature-sensing element 48 may include the dress for capableing of thermometric It sets, including but not limited to, such as thermocouple, thermistor, infrared measurement of temperature element etc..

Further, in presently filed embodiment, also oil return pipe can be set in the oil box 8 of range hood 200, it should Oil return pipe can connect return pipe 42, i.e. greasy dirt in oil box and the cleaning solution in the cavity of spiral case bottom can pass through return pipe 42 are expelled to external sewage pipe, make user without self-cleaning oil box, to effectively promote its usage experience.

The rotation of wind wheel 3, which can be through motor, to be driven.In numerous applications, for driving the motor of wind wheel 3 can To be direct current generator.Controller (such as controller 201) can control the operation of direct current generator, including but not limited to, such as electricity Machine rotating forward, motor reversal, motor stalling etc..Fig. 5 shows controller, the driving circuit of an embodiment according to the application And the annexation figure between motor.As shown in figure 5, driving circuit 210 may include rectification module 211, filter module 212 With switch module 213.Rectification module 211 can be used for will the AC rectification from alternating current at direct current.Rectification module 211 can To include but is not limited to Half bridge rectifier circuit, full bridge rectifier, bridge rectifier.Filter module 212 can be used for will be whole Direct current after stream is filtered.Typical filter module 212 may include LC filter circuit.Switch module 213 may include One or more controllable switches, controller 201 can be realized by the controllable switch in control switch module 213 to motor 214 Energization, power-off, rotating forward, reversion, revolving speed etc. control.The example of controllable switch can include but is not limited to triode, field effect Ying Guan, insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT) etc..Driving circuit 210 In modules be that one of ordinary skill in the art are known and more common, therefore are not described in this application each The specific circuit structure of module.It can there are ways to control the revolving speed of motor 214.In the embodiment of the application In, the voltage (and/or electric current) of motor 214 can be supplied to by adjusting to adjust the revolving speed of motor 214.In an example In, controller 201 can adjust voltage and or current using pulsewidth modulation (PWM), and the revolving speed of motor 214 is adjusted with this.

The example of controller 201 can include but is not limited to, general processor, application specific processor, conventional processors, number Signal processor (DSP), multi-microprocessor and the associated one or more microprocessors of DSP core, controller, microcontroller Device, specific integrated circuit (ASIC), field programmable gate array (FPGA) circuit, other any kind of integrated circuits (IC) with And state machine etc..

It may be configured to execute in the embodiment of the foregoing description according to the cleaning device of presently filed embodiment and appoint Meaning is used for the cleaning method of range hood 200.

In the embodiment of the application, controller 201 may be configured to (such as start in starting cleaning operation Cleaning procedure) in the case where control water supply control valve 43 and open, cleaning solution flows through cleaning by feed pipe 41 and jet pipe 47 and injects To spiral case 2.It is needing that cleaning solution is pumped into the embodiment in spiral case 2 using pump, controller 201 can be configured to Control pump startup.The cleaning solution for being injected into spiral case 2 can be heated to desired temperature, such as 60 degrees Celsius by heating device 46.

Fig. 6 shows the functional block diagram of the cleaning device for range hood according to presently filed embodiment.With reference to Fig. 6, in addition to including the above-mentioned component in cleaning device, cleaning device can also include liquid level detection unit 220, can be with It is communicated with controller 201, for detecting cleaning solution in the liquid level of 2 bottom of spiral case.

In the embodiment of the application, liquid level detection unit 220 may include liquid level sensor, clear for detecting Liquid level of the clean liquid in 2 bottom of spiral case.In the alternative embodiments of the application, as described above, liquid level detection unit 220 can To include flow sensor, it is configured to detect feed pipe 41 or cleans the flow of the cleaning solution in jet pipe 47, and to controller 201 send the signal (flow signal) of instruction flow.Controller 201 can be calculated according to flow signal and is injected into spiral case 2 The amount of cleaning solution.It, can root since the volume of the volute chamber in the shape and spiral case 2 of spiral case 2 can be known in advance Liquid level of the cleaning solution in spiral case 2 is determined according to the amount of the cleaning solution of injection.

Specifically, liquid level detection unit 220 may be configured to the liquid level for the cleaning solution that detection is injected into spiral case 2, and The information (liquid level information) that instruction detects liquid level is sent to controller 201.Controller 201 can receive liquid level information to obtain The liquid level detected, and corresponding movement is made according to liquid level.

During injecting cleaning solution to spiral case 2, the rotation of wind wheel 3 can control.In some embodiments, cleaning solution It can be from the top area injection in spiral case 2.Such as shown in figure 3, cleaning jet pipe 47 is arranged on the top region in spiral case 2 Domain.Wind wheel 3 can be rotated during injecting cleaning solution, to rotate " formal " of wind wheel 3 after cleaning solution injection is completed It can be first whole wet by wind wheel 3 before cleaning.The opportunity that control wind wheel 3 rotates can be beginning and inject cleaning solution to spiral case 2 When, it perhaps can be some suitable time point during injecting cleaning solution or can even is that and cleaned in injection Time point before liquid.Controller 201 may be configured to control water supply control valve 43 and open to inject cleaning solution to spiral case 2, And it controls and is powered to motor 214 to drive wind wheel 3 to rotate.The main purpose of the operation, which can be, moistens 3 entirety of wind wheel, therefore The revolving speed of wind wheel 3 may not necessarily quickly, such as 60 to 300 revs/min.Controller 201 can be by controlling both ends of the motor armature Voltage control the revolving speed of motor 214.Such as controller 201 can control the electricity of both ends of the motor armature by PWM control Pressure.The rotation of wind wheel 3 may include forward or reverse.

Controller 201 can be configured to judge whether liquid level reaches the first predetermined fluid level.Judging that liquid level reaches In the case where one predetermined fluid level, 3 revolving speed of wind wheel is reduced.Specifically, the liquid level that the first predetermined fluid level can be cleaning solution just contacts Liquid level locating for cleaning solution when 3 bottommost blade of wind wheel.When the liquid level of cleaning solution continues to rise, wind wheel 3 is by cleaning solution Resistance can be increasing, if keeping 3 revolving speed of wind wheel constant, it means that the power of motor 214 will increase.The one of the application In a embodiment, when the liquid level of cleaning solution reaches the first predetermined fluid level, 3 revolving speed of wind wheel is reduced according to liquid level.At this In embodiment, the mapping relations that can be preset between liquid level and revolving speed (are directed to rotate and reverse respectively, mapping relations can With difference), rotating speed of target is obtained according to the liquid level and mapping relations that detect, can be adjusted by adjusting the voltage of armature 214 revolving speed of motor is saved, thus by 3 rotational speed regulation of wind wheel to rotating speed of target.In the additional or alternative embodiments of the application, 3 revolving speed of wind wheel can be reduced according to the size of the electric current of armature.Specifically, as liquid level rises, cleaning solution is to rotation Wind wheel 3 apply resistance can be increasing, if 3 revolving speed of wind wheel remains unchanged, the voltage of armature is remained unchanged, but The output power of motor 214 will increase, and thus the electric current of armature will increase.Become larger in order to avoid output power of motor or Motor 214 is maintained at firm power, can detecte the electric current of armature, and according to the big minor adjustment armature of electric current Voltage (electric current is bigger, and voltage is smaller), thus reduces motor speed, to reduce wind speed round.In the replaceable reality of the application It applies in mode, in the case where detecting that the liquid level of cleaning solution reaches the first predetermined fluid level, wind wheel 3 stops operating.Specifically, exist In the case that the liquid level of cleaning solution reaches the first predetermined fluid level, powered off to motor.

Controller 201 can be configured to judge whether the liquid level of cleaning solution reaches the second predetermined fluid level.Wherein, second Predetermined fluid level is higher than the first predetermined fluid level.

In the case where the liquid level of the cleaning solution detected reaches the second predetermined fluid level, stop injection cleaning solution.Such as it controls Device 201 processed can control the closing of water supply control valve 43.Also, controller 201 can be configured to control wind wheel 3 at least along one The rotation of rotation direction intermittence.Operation of the control control wind wheel 3 of controller 201 at least along rotation direction intermittence rotation can be with Described in embodiment as in the previous, details are not described herein again.

In presently filed embodiment, controller 201 can be configured to for cleaning solution being discharged from spiral case 2.Tool Body, in control wind wheel 3 at least along the operation of rotation direction intermittence rotation up to after scheduled duration, can by cleaning solution from It is discharged in spiral case 2.Scheduled duration may be set according to actual conditions.For example, pre- timing can be set according to the effect of cleaning It is long.For another example cleaning effect and power consumption can be taken into account to set scheduled duration.Cleaning solution can from the mode that spiral case 2 is discharged There are many.In one example, pump can be used to extract the cleaning solution after the completion of cleaning from spiral case 2 out.Show at another In example, cleaning solution can be discharged by water-returning control valve 44.In the process of cleaning, water-returning control valve 44 remains turned-off.Work as needs When cleaning solution is discharged, control water-returning control valve 44 is opened so that cleaning solution to be discharged from spiral case 2.The cleaning solution of discharge can use appearance Device (such as water box or water holding box) contains, or connection sewage pipe is exhausted directly to sewer.In addition, in the reality of the application It applies in mode, when cleaning solution is discharged from spiral case 2, wind wheel 3 is no longer rotated.That is, controller 201 can also be configured Off-position is maintained at motor 214 is controlled during cleaning solution is discharged.

In the additional or alternative embodiments of the application, controller 201 can be configured to arrange by cleaning solution Out after spiral case 2, control wind wheel 3 rotates scheduled duration.In cleaning solution after being discharged in spiral case 2, the blade and spiral case of wind wheel 3 2 can still be stained with a small amount of cleaning solution, control wind wheel 3 continue to rotate can will be both attached to by centrifugal force it is clear on wind wheel 3 Clean liquid is thrown away, and can also be sucked air and be generated moving air in spiral case 2, and air-drying for remaining cleaning solution is accelerated.The application's In one embodiment, controller 201 be can be configured to after cleaning solution is discharged, and be can control wind wheel 3 and is rotated forward one in advance Timing is long (for example, 1 minute, 2 minutes etc.).It is rotated forward in advance for example, can control wind wheel 3 in maximum gear (i.e. maximum setting speed) Timing is long.In the another embodiment of the application, controller 201 be can be configured to after cleaning solution is discharged, can A scheduled duration (for example, 1 minute, 2 minutes etc.) is inverted to control wind wheel 3.For example, can control wind wheel 3 maximum gear (i.e. Maximum setting speed) reversion scheduled duration.

Presently filed embodiment additionally provides computer program product, including program instruction, which is controlled Device enables the controller to realize any cleaning method for range hood in above embodiment when executing.

Presently filed embodiment additionally provides storage medium, is stored thereon with computer-readable instruction, which can It enables the controller to execute when reading instruction is executed by a controller any described for range hood in above embodiment Cleaning method.

The optional embodiment of the application example is described in detail in conjunction with attached drawing above, still, the application embodiment is not The detail being limited in above embodiment can be to the application reality in the range of the technology design of the application embodiment The technical solution for applying mode carries out a variety of simple variants, these simple variants belong to the protection scope of the application embodiment.

It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the application embodiment To various combinations of possible ways, no further explanation will be given.

It will be appreciated by those skilled in the art that realizing that all or part of the steps in above embodiment method is can to lead to Program is crossed to instruct relevant hardware and complete, which is stored in a storage medium, including some instructions use so that One (can be single-chip microcontroller, chip etc.) or processor (processor) execute each embodiment the method for the application All or part of the steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey The medium of sequence code.

In addition, any combination can also be carried out between a variety of different embodiments of the application embodiment, as long as its Without prejudice to the thought of the application embodiment, the application embodiment disclosure of that equally should be considered as.

Claims

1. a kind of cleaning method for range hood, the range hood include spiral case, the wind wheel being mounted in the spiral case with And the motor for driving wind wheel rotation, which is characterized in that the cleaning method includes:

Cleaning solution is injected into the spiral case；

Control the wind wheel rotation；

Detect the liquid level of the cleaning solution；

Judge whether the liquid level reaches the first predetermined fluid level；

In the case where judging that the liquid level reaches first predetermined fluid level, reduces the wind speed round or make the wind wheel Stalling；

Judge whether the liquid level reaches the second predetermined fluid level, wherein second predetermined fluid level is higher than the described first predetermined liquid Position；

In the case where judging that the liquid level reaches second predetermined fluid level, stop injecting the cleaning solution, and control institute Wind wheel is stated at least to rotate along a rotation direction intermittence；And

The cleaning solution is discharged from the spiral case.

2. cleaning method according to claim 1, which is characterized in that described to reduce the wind speed round and include:

The wind speed round is reduced according to the liquid level detected.

3. cleaning method according to claim 1, which is characterized in that further include:

During injecting the cleaning solution into the spiral case, the cleaning solution is heated to predetermined temperature.

4. cleaning method according to claim 1, which is characterized in that further include:

After the spiral case is discharged in the cleaning solution, the wind wheel is controlled in maximum gear and rotates scheduled duration.

5. cleaning method according to claim 4, which is characterized in that control the wind wheel in maximum gear and rotate pre- timing Length further includes:

Control wind wheel scheduled duration described in maximum bit reversal.

6. a kind of cleaning device for range hood, the range hood includes spiral case, the wind wheel that is mounted in the spiral case And the motor for driving wind wheel rotation, which is characterized in that the cleaning device includes:

Jet pipe is cleaned, for injecting cleaning solution into the spiral case；

One end of feed pipe, the feed pipe is connected to the cleaning jet pipe, and the other end can connect cleaning solution source；

Water supply control valve is arranged at the feed pipe, for controlling the on-off of the feed pipe；

Return pipe, one end of the return pipe are connected to the spiral case bottom, for the cleaning solution to be discharged；

Water-returning control valve is arranged at the return pipe, for controlling the on-off of the return pipe；

Liquid level detection unit, for detecting the liquid level of the cleaning solution；And

Controller, the controller are configured to:

In the case where starting cleaning operation, controls the water supply control valve and open, to inject cleaning solution into the spiral case；

The liquid level is obtained from the liquid level detection unit；

Judge whether the liquid level reaches the first predetermined fluid level；

Judge whether the liquid level reaches the second predetermined fluid level, second predetermined fluid level is higher than first predetermined fluid level；

In the case where judging that the liquid level reaches second predetermined fluid level, controls the water supply control valve and close to stop The cleaning solution is injected, and controls the wind wheel and is at least rotated along a rotation direction intermittence；And

It controls the water-returning control valve to open, the cleaning solution is discharged from the spiral case.

7. cleaning device according to claim 6, which is characterized in that the controller is further configured to according to detection The liquid level arrived reduces the wind speed round.

8. cleaning device according to claim 6, which is characterized in that further include heating device, be configured to described During injecting the cleaning solution in spiral case, the cleaning solution is heated to predetermined temperature.

9. cleaning device according to claim 6, which is characterized in that the controller is further configured to by the cleaning Liquid is discharged after the spiral case, controls the wind wheel in maximum gear and rotates scheduled duration.

10. cleaning device according to claim 9, which is characterized in that it is predetermined in the rotation of maximum gear to control the wind wheel Duration further comprises:

Control wind wheel scheduled duration described in maximum bit reversal.

11. a kind of range hood, including spiral case, the wind wheel being mounted in the spiral case and for driving the wind wheel rotation Motor, which is characterized in that the range hood further includes according to any one of claim 6 to 10 for fume-exhausting The cleaning device of machine.

12. a kind of storage medium, is stored thereon with computer-readable instruction, which is characterized in that the computer-readable instruction is located Reason device enables the processor to execute as claimed in any of claims 1 to 5 for range hood when executing Cleaning method.