CN112021985A

CN112021985A - Handheld dust collector and control method

Info

Publication number: CN112021985A
Application number: CN202010876814.7A
Authority: CN
Inventors: 石琳; 姜玥; 高钊
Original assignee: Zhuichuang Technology Suzhou Co Ltd
Current assignee: Zhuichuang Technology Suzhou Co Ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-12-04
Anticipated expiration: 2040-08-27
Also published as: CN112021985B; CN114794963B; CN114794963A

Abstract

The application discloses handheld dust catcher and control method, handheld dust catcher includes: the device comprises a shell, a dust collecting device and a dust collecting device, wherein a storage bin for containing scraps is formed in the shell, and a dust collecting inlet for allowing airflow to enter the shell and an air outlet for allowing airflow to flow out are formed in the shell; the motor is arranged in the shell and used for driving the impeller to rotate so as to generate suction airflow; the detection unit is arranged at the air outlet and used for detecting the characteristic parameters of the air flow at the air outlet; the control unit is electrically connected with the detection unit and the motor and used for acquiring the characteristic parameters and generating and sending out a reminding signal according to the characteristic parameters; and the reminding unit is electrically connected with the control unit and is used for receiving and reminding the user according to the reminding signal. The handheld dust collector and the control method can judge whether the air outlet is abnormal or not according to the characteristic parameters of the air outlet flow, and then remind a user under the abnormal condition.

Description

Handheld dust collector and control method

Technical Field

The application relates to the technical field of dust collectors, in particular to a handheld dust collector and a control method.

Background

In families and working lives, dust and debris cannot be prevented from accumulating on a table top or other table tops, and the table top dust collector needs to be cleaned at any time in a portable handheld mode, so that the table top dust collector is widely required and applied.

Traditional handheld desktop dust catcher, when the air-out air current is unusual, the user can not timely understanding handheld dust catcher's operating condition, consequently often appears filtering piece jam, the motor stall the condition of continuous work under the class of condition, and not only work efficiency is low like this, can reduce handheld dust catcher life moreover.

Disclosure of Invention

Aiming at the defects in the technology, the application provides the handheld dust collector capable of alarming abnormally and the control method.

In order to solve the technical problem, the technical scheme adopted by the application is as follows:

a hand-held vacuum cleaner comprising:

the shell is provided with a dust absorption inlet for air flow to enter and an air outlet for air flow to flow out;

a motor disposed within the housing for driving rotation of an impeller to generate a suction airstream;

the detection unit is arranged at the air outlet and used for detecting the characteristic parameters of the airflow at the air outlet;

the control unit is electrically connected with the detection unit and the motor and used for acquiring the characteristic parameters and generating and sending out a reminding signal according to the characteristic parameters; and

and the reminding unit is electrically connected with the control unit and is used for receiving and reminding actions according to the reminding signal.

Preferably, the detection unit includes a wind wheel disposed at the air outlet, and the characteristic parameter includes a flow velocity for representing an airflow flowing through the air outlet;

the detection unit comprises a speed measurement element for detecting the rotating speed of the wind wheel, and the speed measurement unit is electrically connected with the control unit; the control unit is used for generating and sending the reminding signal to the reminding unit when judging that the rotating speed of the wind wheel is lower than a preset speed threshold value.

Preferably, the reminding signal comprises a first reminding signal, and the first reminding signal is used for reminding a user of motor abnormality; when the rotating speed of the wind wheel is judged to be lower than the preset speed threshold value, the control unit is used for further obtaining the current load current of the motor, and when the load current is judged to be larger than the preset current threshold value, the control unit is used for generating and sending the first reminding signal to the reminding unit.

Preferably, the dust collector further comprises a filter element, and the filter element is arranged between the dust collection inlet and the air outlet; the reminding signal comprises a second reminding signal, and the second reminding signal is used for reminding a user of cleaning the filter element; and when the rotating speed of the wind wheel is judged to be lower than the preset speed threshold and the load current is judged not to exceed the preset current threshold, the control unit is used for generating and sending the second reminding signal to the reminding unit.

Preferably, the reminding action comprises at least one of lighting, flashing, vibrating and voice broadcasting.

The application also provides a control method of the handheld dust collector, the handheld dust collector comprises a shell and a motor, and the shell is provided with a dust collection inlet for air flow to enter the shell and an air outlet for air flow to flow out; the motor is arranged in the shell and used for driving the impeller to rotate so as to generate suction airflow;

wherein the method comprises the following steps:

acquiring characteristic parameters of the air outlet airflow;

generating a control signal according to the characteristic parameter; and

and performing reminding action according to the control signal.

Preferably, the handheld vacuum cleaner further comprises a wind wheel arranged at the air outlet, and the characteristic parameter comprises a flow velocity for representing the airflow flowing through the air outlet; the step of acquiring the characteristic parameters of the air outlet airflow comprises detecting the rotating speed of the wind wheel; the step of generating the control signal according to the characteristic parameter includes generating the reminding signal when the rotating speed of the wind wheel is judged to be lower than a preset speed threshold value.

Preferably, the reminding signal comprises a first reminding signal, and the first reminding signal is used for reminding a user that the motor is abnormal; the step of generating the control signal according to the characteristic parameter further includes obtaining a current load current of the motor, and generating the first reminding signal when the load current is judged to be larger than a preset current threshold value.

Preferably, the handheld dust collector further comprises a filter element, and the filter element is arranged between the dust collection inlet and the air outlet; the reminding signal comprises a second reminding signal, and the second reminding signal is used for reminding a user of cleaning the filter element; the step of generating the control signal according to the characteristic parameter further includes generating a second reminding signal when the rotating speed of the wind wheel is judged to be lower than the preset speed threshold and the load current does not exceed a preset current threshold.

Compared with the prior art, the application has the beneficial effects that:

according to the handheld dust collector and the control method, the working state of the handheld dust collector is judged by obtaining the characteristic parameters of the air flow at the air outlet, and when abnormal work is judged, a reminding action is executed, so that a user can be reminded in an abnormal state in time.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a perspective view of a hand-held vacuum cleaner according to the present application;

FIG. 2 is a cross-sectional view of the hand-held cleaner shown in FIG. 1;

FIG. 3 is an exploded view of the hand-held cleaner of FIG. 1;

FIG. 4 is a schematic perspective view of a top cover of the hand-held cleaner of FIG. 1;

FIG. 5 is a schematic view of a hand-held vacuum cleaner according to an embodiment of the present disclosure

Fig. 6 is a flowchart illustrating a control method of a hand-held cleaner according to an embodiment of the present disclosure.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. 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.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

A hand-held cleaner 100, as shown in figures 1 to 3, comprises a housing, a motor 20 and an impeller 60.

The handheld vacuum cleaner 100 provided in this embodiment is small and portable, and is therefore also referred to as a tabletop vacuum cleaner, since it is used to absorb dust, debris, etc. on a tabletop. In one specific application scenario, the eraser is used for absorbing eraser scraps, pencil scraps and the like, and therefore, the eraser can also be used as stationery.

Wherein, a storage bin 111 for containing the scraps is formed in the shell, and a dust suction inlet 110 for air to enter the storage bin 110 and an air outlet 1210 for air to flow out are formed on the storage bin. Specifically, the housing includes an upper housing 12 and a lower housing 11, a storage bin 111 for containing the debris is formed in the lower housing 11, and a dust suction inlet 110 for air to flow into the storage bin 110 is formed at the bottom of the lower housing 11. The lower housing 11 is detachably connected to the upper housing 12 so that the lower housing 11 is detached to clean debris contained in the storage bin 111. It will be appreciated that the lower housing 11 and the upper housing 12 are not limited to a direct detachable connection, but that there may also be an intermediate element.

The motor 20 is disposed within the housing and is drivingly connected to the impeller 60 for driving the impeller 60 in rotation to create a suction airflow. Specifically, the impeller 60 is specifically a centrifugal impeller.

Referring to fig. 5, the handheld vacuum cleaner 100 further includes a detection unit 150 and a control unit 160 connected to the detection unit 150, the detection unit 150 is disposed at the air outlet 1210 and configured to detect a characteristic parameter of the airflow at the air outlet 1210, and the control unit 160 is electrically connected to the motor 20 and configured to obtain the characteristic parameter detected by the detection unit 150 and generate and send a prompt signal according to the characteristic parameter; and the reminding unit 170, electrically connected to the control unit 160, for receiving and carrying out reminding actions according to the reminding signals.

The application provides a handheld dust collector 100, through setting up the characteristic parameter of the air current of detecting element 150 detection air outlet, the control unit 160 generates and sends reminding signal to reminding unit 170 according to characteristic parameter, carries out the warning action by reminding unit 170, can be in handheld dust collector 100 air-out timely warning user when unusual, prevents to use continuously under abnormal condition, timely overhauls.

In one embodiment, referring to fig. 4, the detecting unit 150 includes a wind wheel 143 disposed at the wind outlet 1210, and the characteristic parameter includes a flow rate for characterizing the airflow flowing through the wind outlet 1210. Wherein, the detecting unit 150 comprises a speed measuring element (not shown) for detecting the rotating speed of the wind wheel 143, and the speed measuring unit is electrically connected with the control unit 160; when the rotating speed of the wind wheel 143 is lower than the preset speed threshold, the control unit 160 generates and sends the reminding signal to the reminding unit 170. Specifically, the speed measuring element may be a hall sensor or a laser speed measuring sensor.

In an embodiment, the wind wheel 143 is coaxially disposed with the axis of the handheld vacuum cleaner 100, the hall sensor may be disposed opposite to the rotation center shaft of the wind wheel 143, and the rotation center shaft of the wind wheel 143 may be provided with a magnet that synchronously rotates with the wind wheel 143 to obtain the rotation speed of the wind wheel 143 in real time.

However, the abnormal air outlet is only one expression, and there may be various reasons for the abnormal air outlet. According to the other embodiment, the reason of the abnormity can be distinguished to carry out the pointed reminding action. In this embodiment, the reminding signal includes a first reminding signal, and the first reminding signal is used for reminding a user that the motor 20 is abnormal, wherein when the rotation speed of the wind wheel 143 is determined to be lower than the preset speed threshold, the control unit 160 further obtains the current load current of the motor 20, and when the load current is determined to be greater than the preset current threshold, the control unit generates and sends the first reminding signal to the reminding unit 170. The reminding unit 170 performs a first reminding action based on the first reminding signal.

As can be appreciated, the airflow entering through the dust inlet 110 entrains dust and debris, wherein the debris with smaller particles is exhausted from the air outlet 1210 to the outside along with the airflow, thereby polluting the surrounding air environment and reducing the user experience. In order to prevent dirt entrained in the airflow from entering the accommodating space and polluting the power module and the outside air, a filter element 70 is further included between the dust suction inlet 110 and the air outlet 1210 for filtering the dirt in the airflow flowing in from the dust suction inlet 110. Wherein, the filtering member 70 may be a sponge, a filter cotton, a filter net, etc. However, the filter element 70 may have a reduced permeability and an unsatisfactory filtering effect due to dust accumulated on the surface or inside thereof as the operation time increases, and the filter element 70 may need to be replaced or cleaned.

In order to accurately remind the replacement time of the filter element 70, in another embodiment, the reminding signal includes a second reminding signal for reminding the user to clean the filter element 70; when the rotation speed of the wind wheel is lower than the preset speed threshold value and the load current does not exceed the preset current threshold value in the judging step 143, the control unit 160 generates a second reminding signal which is sent to the reminding unit 170. That is to say, when the wind wheel speed is low, further judge whether the load current of motor 20 is in the normal range, if not exceed the preset current threshold value then think motor 20 is normal, then think the air outlet that the air circuit blockage caused is unusual, judge that need clear up filter 70, send out the second warning signal. The reminding unit 170 performs a second reminding action based on the second reminding signal. Specifically, the second reminding action is different from the first reminding action.

The reminding unit 170 is used for receiving the reminding signal and performing a reminding action. Wherein, the reminding action can comprise at least one of light, flashing, vibration and voice broadcast. In one embodiment, the first reminding action and the second reminding action are different types of reminding modes, for example, the first reminding action adopts light, and the second reminding action adopts vibration. Of course, in another embodiment, the first reminding action and the second reminding action both adopt a light mode, but the colors or the brightness of the lights are different; or the first reminding action and the second reminding action are both flashing, but the flashing frequencies are different; or the first reminding action and the second reminding action adopt a voice broadcasting mode, and only the broadcasted content is different. As long as the reminding actions taken according to the first reminding signal and the second reminding signal can be distinguished.

In another embodiment, the detecting unit 150 can be used to detect one or more of the temperature, cleanliness and flow parameters of the tuyere current. When detecting the temperature of the airflow, the detecting unit 150 is a temperature sensor, and the temperature of the outlet airflow is too high, which indicates that the motor is heated seriously and is in an abnormal state. When the cleanliness of the detection air flow is selected, the detection element is a dust sensor, and the parameter detected by the dust sensor is used for the content of dust in the reaction air flow, so that whether the filter element 70 needs to be cleaned or not is judged. When detecting element is used for detecting air-out air current flow, detecting element 150 specifically is flow sensor, and whether the flow size can react the gas circuit unobstructed, can judge whether need clear up and filter 70.

It can be understood that the control unit 160 in the present application may be a single chip microcomputer or a micro-control processor, and those skilled in the art can make adjustments according to actual situations.

In an embodiment of the present application, referring to fig. 1 to 2, the upper housing 12 includes a sidewall 120 and a top wall 121 connected above the sidewall 120. The top wall 121 of the upper housing 12 may be provided separately from the side wall 120, or may be integrally formed, which is not limited herein.

Further, the air outlet 1210 is opened on the top wall 121 of the upper housing 12, the housing further includes a top cover 14 disposed on the top of the upper housing 12, the top cover 14 shields the air outlet 1210, and an inclined upward air outlet gap is formed between the top cover 14 and the top wall 121 of the upper housing 12.

The air outlet gap is arranged obliquely upward, and can guide the airflow blown out by the air outlet 1210 to be blown out obliquely upward. On one hand, the risk that the blown air flow blows away the files on the cleaning surface can be reduced, on the other hand, the air flow is blown out in a non-direct-upward mode, the phenomenon that concentrated air flow is formed in the direct-upward mode is avoided, the strength of the air flow felt by the hand or the arm of the user when the hand or the arm of the user is located above the handheld dust collector 100 is weakened, and user experience is good.

Furthermore, the top wall 121 is in a bowl shape gradually recessed from the edge to the middle, and the air outlet 1210 is disposed at the bottom of the bowl-shaped top wall 121. Specifically, the outer contour of the top wall 121 is circular, the circumferential edge of the top wall is fixedly connected with the side wall 120, the middle of the top wall 121 is recessed into the accommodating space, and the air outlet 1210 is arranged at the bottom of the recess. Since the air flow is from bottom to top, the air flow flows upwards from the bottom of the bowl-shaped top wall 121, and has a tendency to incline upwards under the guiding action of the top wall 121.

For more even air-out, weakening air-out air current intensity, the air-out clearance is roughly annular, and the air current flows from the bottom of roof 121 upwards, and the circulation cross sectional area in air-out clearance increases gradually, and so, air-out speed is showing and is reducing, and the air current intensity that can feel weakens greatly. Specifically, the top cover includes a covering portion 142 covering the air outlet 1210, a middle portion of the covering portion 142 is supported and connected to the top wall 120, and the covering portion 142 is spaced from the top wall 121 in the circumferential direction to form a substantially annular air outlet gap.

Annular air-out clearance blows off the air current dispersion from circumference, has weakened the speed that the air current blew off, has reduced the air current to placing the influence of other article on cleaning surface, has also weakened the user to the impression of air-out air current, promotes user experience.

Referring to fig. 3 and 4 together, the top cover 14 includes a support portion 141 for connecting with the top wall 121, and the support portion 141 is connected to a substantially middle position of the covering portion 142 of the top cover 14. The top wall 121 is provided with a mounting seat 1211 for mounting the supporting portion 141, and the mounting seat 1211 is disposed in the middle of the top wall 121. The supporting portion 141 is connected to the mounting seat 1211, the top cover 14 is supported above the top wall 121, and an annular air outlet gap is formed between the lower end surface of the top cover 14 and the upper end surface of the top wall 121. More specifically, the cover portion 142 is substantially circular, and the outer contour of the top wall 121 is also circular corresponding to the cover portion 142, and an annular airflow communication gap is defined therebetween.

Preferably, the air outlets 1210 are multiple and arranged at the bottom of the top wall 121 in a substantially circumferential arrangement, so that the air is discharged more uniformly in the circumferential direction. More preferably, the air outlets 1211 are evenly spaced around the mount 1211 at the bottom of the top wall 121, i.e., the mount 1211 is located at a middle position of the air outlet 1210.

Wind wheel 143 forms on top cap 14, flows out from air outlet 1210 when the air current, and through wind wheel 143, it is rotatory to drive wind wheel 143, and then top cap 14 rotates together, and the user can the audio-visual rotation speed of observing top cap 14 to whether the judgement air-out air current is normal directly perceived. When the airflow circulation path is not smooth or other faults cause the handheld dust collector 100 to be in an abnormal working state, the wind speed of the air outlet airflow of the air outlet 1210 is reduced, the rotating speed of the wind wheel 143 is reduced, and the speed of the airflow of the air outlet 1210 can be known by visually observing the rotating speed of the wind wheel 143, so that whether the air outlet is normal or not can be visually judged.

The base 30 is provided with an opening 310 for communicating the storage bin 111 and the accommodating space, and the motor 20 is disposed on an airflow path between the opening 310 and the air outlet 1210. Referring to the airflow flowing direction shown by the arrow in fig. 2, during the operation of the handheld vacuum cleaner 100, the impeller 60 is driven to rotate, and since the accommodating space and the storage bin 111 are communicated with each other through the opening 310 formed in the base 30, the impeller 60 rotates to form a negative pressure, and the airflow flows into the storage bin 111 from the dust suction inlet 110 below, enters the accommodating space through the opening 310, flows through the motor 20, and finally flows out from the air outlet 1210. The power assembly is arranged on the airflow circulation path, and can dissipate heat by utilizing suction airflow generated by rotation of the impeller, so that the heat dissipation effect of the power assembly is improved, and the service life of the power assembly can be prolonged.

The base 30 further includes a wind guide plate 31 disposed below the impeller 60 and a support plate 32 for supporting the motor 20. The opening 310 is opened in the middle of the air deflector 31 and is located substantially directly below the impeller 60. Further, the suction inlet 110 is also located directly below the impeller 60, and preferably, the suction inlet 110 substantially coincides with the center of the impeller 60. In this way, the airflow passage in the intake path is concentrated near the rotation axis of the impeller, and the airflow loss is small. Also supported above the support plate 32 is a battery 50 for powering the motor 20, below which is located an impeller 60. In order to facilitate the air flow to the motor side, a gap for the air flow is provided between the support plate 32 and the side wall 120 of the upper case 12, and the air flow is thrown off by the impeller 60, then flows upward from the gap between the support plate 32 and the side wall 120, and flows toward the motor side. Specifically, the support plate 32 is substantially circular, the side wall 120 is cylindrical with an inner diameter larger than that of the support plate 32, an annular gap is formed between the support plate 32 and the side wall 120, and the airflow is thrown out in the radial direction of the impeller 60 and flows upward through the annular gap.

To assist in positioning the power assembly, the hand-held cleaner 100 also includes a positioning plate 40 disposed above the power assembly. Specifically, the support plate 40 includes a limit groove for limiting the swing of the driving motor 20, and the limit groove covers the driving motor 20 and is capable of limiting the driving motor 20. The support plate 40 has a gap in the circumferential direction from the upper case 12 for the circulation of the air flow.

The present invention further provides a control method of a handheld vacuum cleaner, and the handheld vacuum cleaner in the present application may refer to the handheld vacuum cleaner 100 provided in any of the above embodiments, which is not described herein again.

The control method of the handheld vacuum cleaner provided in this embodiment is performed by using the handheld vacuum cleaner 100 provided in any of the embodiments, so for functional components and connection relationships of the handheld vacuum cleaner, reference is made to the embodiments, and details are not repeated.

Referring to fig. 6 in conjunction with fig. 2 to 3, the control method includes:

s2: characteristic parameters of the air flow at the air outlet 1210 are obtained.

In this step, the characteristic parameter may be the rotation speed of the airflow passing through the air outlet 120, and in order to obtain the rotation speed of the airflow, the wind wheel 143 may be disposed at the air outlet 1210. In short, the faster the rotor 143 rotates, the greater the corresponding airflow rate. Therefore, the flow rate of the airflow can be obtained by detecting the rotation speed of the wind wheel 143.

Of course, in other embodiments, the characteristic parameter may further include one or more of temperature, cleanliness and flow rate parameters, and the corresponding obtaining manner may be implemented by setting a sensor in the corresponding parameter, which is not described herein again.

S4: and generating a control signal according to the characteristic parameter.

After the characteristic parameters of the air flow are obtained, whether the characteristic parameters meet preset conditions needs to be judged, and therefore corresponding reminding signals are generated.

Specifically, when the characteristic parameter is the airflow speed, it may be further determined whether the rotational speed of the wind wheel is lower than a preset speed threshold after the rotational speed of the wind wheel is obtained. That is, the slower the speed of the rotor, the more likely problems can be found in the interior of the hand-held cleaner that can affect the airflow, such as over-slow motor rotation, filter clogging, etc. It will be appreciated that the speed threshold may be adapted by those skilled in the art and is not listed here.

In one embodiment, the alert signal includes a first alert signal for alerting a user that the motor 20 is abnormal; the step of generating the control signal according to the characteristic parameter further includes obtaining a current load current of the motor, and generating a first reminding signal when the current load current is judged to be larger than a preset current threshold.

In one embodiment, handheld vacuum cleaner 100 further includes filter element 70, filter element 70 being disposed between suction inlet 110 and air outlet 1210; the reminder signal comprises a second reminder signal for reminding a user to clean the filter 70; the step of generating the control signal according to the characteristic parameter further comprises generating a second reminding signal when the rotating speed of the wind wheel is judged to be lower than a preset speed threshold and the load current does not exceed a preset current threshold.

That is, on the premise that the rotation speed of the wind wheel is lower than the preset speed threshold, the load current of the motor needs to be further judged. If the load current of the motor is overlarge, a user is reminded that the motor is abnormal and needs to be replaced or maintained; if the motor load is normal, then remind the user to filter a jam, lead to air outlet department air current velocity of flow to hang down excessively, need clear up and filter.

Therefore, various reminding modes are provided for different situations, and therefore a user can conveniently and accurately position the obstacle of the handheld dust collector.

S6: and performing reminding action according to the control signal.

In this embodiment, the reminding action may include at least one of light, flashing, vibration, and voice broadcast. The reminding unit 170 executes a first reminding action based on the first reminding signal and executes a second reminding action based on the second reminding signal, wherein the first reminding action is different from the second reminding action.

In one embodiment, the first reminding action and the second reminding action are different types of reminding modes, for example, the first reminding action adopts light, and the second reminding action adopts vibration. Of course, in another embodiment, the first reminding action and the second reminding action both adopt a light mode, but the colors or the brightness of the lights are different; or the first reminding action and the second reminding action are both flashing, but the flashing frequencies are different; or the first reminding action and the second reminding action adopt a voice broadcasting mode, and only the broadcasted content is different. As long as the reminding actions taken according to the first reminding signal and the second reminding signal can be distinguished.

It is understood that other intermediate steps may be included among the steps of S2, S4, and S6, and the above step order is not limited to be understood as the order of the immediately adjacent steps, and of course, further preceding steps or following steps may be included before the step of S2 or after the step of S6, as long as there is no contradiction.

In summary, the handheld dust collector and the control method provided by the application can generate the control signal based on the characteristic parameters of the air flow at the air outlet, correspondingly take the reminding action, and timely remind the user of the abnormality of the handheld dust collector. Furthermore, the reason that causes the air-out anomaly can be distinguished and reminded, and the help is used for knowing the operating condition of each functional component of the handheld dust collector, and timely maintenance or clearance.

The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.

Claims

1. A hand-held cleaner, comprising:

2. The handheld vacuum cleaner of claim 1, wherein the detection unit comprises a wind wheel disposed at the air outlet, and the characteristic parameter comprises a flow rate indicative of an airflow passing through the air outlet;

3. The handheld vacuum cleaner of claim 2, wherein the alert signal comprises a first alert signal for alerting a user of an abnormal motor; when the rotating speed of the wind wheel is judged to be lower than the preset speed threshold value, the control unit is used for further obtaining the current load current of the motor, and when the load current is judged to be larger than the preset current threshold value, the control unit is used for generating and sending the first reminding signal to the reminding unit.

4. The hand-held cleaner of claim 3, further comprising a filter element disposed between the suction inlet and the outlet; the reminding signal comprises a second reminding signal, and the second reminding signal is used for reminding a user of cleaning the filter element; and when the rotating speed of the wind wheel is judged to be lower than the preset speed threshold and the load current is judged not to exceed the preset current threshold, the control unit is used for generating and sending the second reminding signal to the reminding unit.

5. The hand-held cleaner of claim 1, wherein the alert action comprises at least one of a glow, a flashing light, a vibration, and a voice announcement.

6. The control method of the handheld dust collector is characterized in that the handheld dust collector comprises a shell and a motor, wherein the shell is provided with a dust collection inlet for air flow to enter the shell and an air outlet for air flow to flow out; the motor is arranged in the shell and used for driving the impeller to rotate so as to generate suction airflow;

wherein the method comprises the following steps:

acquiring characteristic parameters of the air outlet airflow;

generating a control signal according to the characteristic parameter; and

and performing reminding action according to the control signal.

7. The method of claim 6, wherein the hand-held vacuum cleaner further comprises a wind wheel disposed at the outlet vent, and the characteristic parameter comprises a flow rate indicative of the flow of air through the outlet vent; the step of acquiring the characteristic parameters of the air outlet airflow comprises detecting the rotating speed of the wind wheel; the step of generating the control signal according to the characteristic parameter includes generating the reminding signal when the rotating speed of the wind wheel is judged to be lower than a preset speed threshold value.

8. The method of claim 7, wherein the alert signal comprises a first alert signal for alerting a user that the motor is abnormal; the step of generating the control signal according to the characteristic parameter further includes obtaining a current load current of the motor, and generating the first reminding signal when the load current is judged to be larger than a preset current threshold value.

9. The method of claim 8, wherein the hand-held vacuum cleaner further comprises a filter element disposed between the suction inlet and the outlet; the reminding signal comprises a second reminding signal, and the second reminding signal is used for reminding a user of cleaning the filter element; the step of generating the control signal according to the characteristic parameter further includes generating a second reminding signal when the rotating speed of the wind wheel is judged to be lower than the preset speed threshold and the load current does not exceed a preset current threshold.

10. The method of claim 6, wherein the alert action comprises at least one of lighting, flashing, vibrating, and voice broadcasting.