CN101273860B - Robot vacuum cleaner with improved dust collector - Google Patents

Abstract

A robot cleaner having an improved dust collector having a configuration capable of improving the ability to collect dust and the like is disclosed. The robot vacuum cleaner includes: a suction port for sucking dust; a dust collector for containing the dust sucked through the suction port; and a rotating brush arranged on one side of the suction port. The robot cleaner is configured to sweep dust and collect dust into a dust collector by driving force of a rotating brush.

Description

Robot vacuum cleaner with improved dust collector

technical field

The present invention relates to a robot cleaner, and more particularly, to a robot cleaner configured to achieve improved cleaning performance.

Background technique

A vacuum cleaner is an appliance used to remove dirt and clean a room. Commonly used is a vacuum cleaner that sucks in dirt by using suction generated from a low-pressure unit.

Recently, the development of robotic vacuum cleaners is underway. The robot vacuum cleaner removes dirt from the floor by its own self-running function without user's labor.

An example of the robot cleaner is disclosed in Korean Patent Publication No. 10-2006-0027701.

The robot vacuum cleaner disclosed in the above publication includes: a main body case having a dust or dirt suction port and an air discharge port; a fan motor mounted in the main body case to generate suction; a filter container mounted in front of the fan motor and containing A filter to collect dust or dirt sucked by the operation of the fan motor; a suction head provided at the bottom of the main body case and connected to the filter container through a connecting pipe to suck the dust or dirt from the floor; a brush , rotatably set in the suction head to clean the dust or dirt on the floor; an air purification filter installed in the main body shell to discharge the air sucked into the robot vacuum cleaner together with the dust or dirt through the air Purify the air before the port is discharged.

The most important factors affecting the cleaning performance of the robot vacuum cleaner are the suction generated by the fan motor and the brush installed on one side of the suction port. The greater the suction power, the better the cleaning performance. In addition, improved cleaning performance can be expected when the dust is sucked after the dust is scattered upward by using the brush.

However, a problem with a robot vacuum cleaner is that since it is supposed to be constructed small in size and low in height to clean under furniture (e.g., a sofa), the robot vacuum cleaner cannot employ a large-sized fan motor that provides a large suction force and has only a limited battery capacity.

As a result, the robot vacuum cleaner generally uses a fan motor having a very low power (about 30~100W) lower than that of a conventional vacuum cleaner (about 600W), and by using the fan motor of the low power, it is ineffective in sucking heavy dust into the filter. There are limitations.

More specifically, after the dust is scattered upward from the floor by the brush, the robot vacuum cleaner transfers the dust, debris, etc. The vertically extending connecting pipe is sucked into a filter installed in the filter container and collected by the filter. However, it is difficult for the robot vacuum cleaner to exhibit satisfactory cleaning performance because the fan motor with low power generates weak suction.

In robot vacuum cleaners with low-power fan motors, in order to enhance suction, it is necessary to reduce the cross-sectional area of the suction port. However, this deteriorates the ability to collect large dust or dust of various shapes. In addition, when increasing the cross-sectional area of the suction port to improve the cleaning performance of the robot cleaner by a sweeping operation with a brush, there is a problem of deteriorating the suction force generated by the fan motor.

Contents of the invention

Accordingly, an aspect of the embodiments is to provide a robot cleaner having a configuration capable of improving the ability to collect dust and the like.

Additional aspects and/or advantages of the invention will be set forth in part and, in part, will be apparent from the description which follows, or may be learned by practice of the invention.

According to the present invention, the above and/or other aspects can be achieved by proposing a robot vacuum cleaner comprising: a suction inlet for sucking dust; a dust collector for containing the dust sucked through the suction inlet; a rotating brush, It is provided on one side of the suction inlet, and the robot vacuum cleaner is configured to sweep dust and collect dust into the dust collector by the driving force of the rotating brush.

The dust collector may include a plurality of collection areas including a first collection area defined at a lower portion of the dust collector and a second collection area defined at an upper portion of the dust collector.

The robot cleaner may further include: a blower to generate suction to be applied to the dust collector, and the dust collector may be divided into a plurality of collection areas for receiving dust, and a part of the plurality of collection areas may not Direct communication with blower.

The plurality of collection areas may be separated from each other by a vertical partition, and may include a first collection area directly communicating with the blower and a second collection area not directly communicating with the blower.

The dust collector may include a dividing member for preventing dust contained in the second collection area from flowing backward into the first collection area.

The first collection area and the second collection area may communicate with each other through a vertically extending connecting channel.

The dust collector may include a backflow preventing member for preventing dust in the dust collector from being discharged through the suction port.

The robot cleaner may further include a blower to provide a driving force required to introduce dust into the dust collector, and the backflow prevention member may be adapted to open or close the suction port according to an operation of the blower.

The backflow prevention member may be coupled to an upper surface of the first collecting area, and pivotally rotated by a suction force of a blower.

The robot cleaner may further include a guide part for guiding dust cleaned by the rotating brush into the suction inlet.

According to another aspect of the present invention, there is provided a robot vacuum cleaner, which includes: a main body having a suction port for sucking dust; a blower provided in the main body to generate suction; a rotating brush provided at one side of the suction port The dust collector is used to accommodate the dust sucked through the suction port, and the dust collector includes: at least one first collection area, which is used to accommodate the dust cleaned by the rotating brush; Dust is introduced by the interaction with the blower.

The dust collector may include a plurality of suction slots communicating with the suction port, at least one of which is not affected by the suction force of the blower.

The plurality of suction slits may include: at least one first suction slit communicated with at least one first collection area to inhale dust only by the operation of the rotating brush; a second suction slit communicated with the second collection area, Dust is sucked in by the action of rotating brushes and blowers.

The second collection area may be located above the first collection area.

The dust collector may include a backflow prevention member for preventing dust in the dust collector from being discharged through the suction port.

Both the suction port and the lower surface of the first collection area may be provided at the bottom of the main body so as to be located close to the floor.

The robot cleaner may further include a guide part for guiding dust cleaned by the rotating brush into the suction inlet.

The above and/or other aspects can be achieved by providing a robot cleaner including: a main body including a suction port for sucking dust; a blower provided in the main body and generating suction for sucking dust; a rotating brush , is arranged at the suction port to introduce dust into the suction port; the dust collector accommodates the dust sucked through the suction port, the dust collector includes: at least one first collection area, directly connected to the suction port and communicated with the rotating brush; the second A second collection area, which accommodates the dust introduced through the suction port and is in direct communication with the blower, so that the dust contained at the second collection area is contained by the interaction of the rotating brush and the blower.

The second collection area can communicate with the first collection area through a connecting channel.

The at least one first collection area may be adjacent to and separate from the second collection area.

The second collection zone may include a flow slot in communication with the blower.

The at least one first collection area and the second collection area may each include a suction narrow hole communicating with the suction port.

The second collection area may include a dividing member inclined upward toward a rear side thereof.

The second collection area may include a lower collection area and an upper collection area, and the dividing member divides the lower collection area from the upper collection area.

The at least one first collection area and the second collection area may each include at least one wall having a predetermined height to prevent dust from being discharged to the outside through the suction narrow hole.

Description of drawings

These and/or other aspects and advantages of the present invention will become clearer and easier to understand through the following description of embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a perspective view of a robot cleaner according to the present embodiment;

2 is a sectional view showing the overall configuration of the robot cleaner according to the first embodiment;

3 is a sectional view showing important parts of the robot cleaner according to the first embodiment;

4 is a sectional view showing the operation of the robot cleaner according to the first embodiment;

5 is a graph comparing the cleaning performance of the robot cleaner according to the present embodiment with that of the conventional robot cleaner;

6 is a sectional view showing the overall configuration of a robot cleaner according to a second embodiment;

7 is a perspective view showing a dust collector included in a robot cleaner according to a second embodiment;

Fig. 8 is a sectional view taken along line A-A of Fig. 7;

FIG. 9 is a sectional view taken along line B-B of FIG. 7 .

Detailed ways

Now, embodiments will be described in detail, examples of which are shown in the accompanying drawings, in which like reference numerals refer to like elements throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

FIG. 1 is a perspective view of a robot cleaner according to the present embodiment, and FIG. 2 is a cross-sectional view showing an overall configuration of the robot cleaner according to the first embodiment.

The robot vacuum cleaner according to the first embodiment as shown in FIGS. 1 and 2 includes: a main body 10 defining the appearance of the vacuum cleaner 1; a dust collector 20 installed in the main body 10 to collect dust, debris, etc. "Dust") collects therein; the blower 30, in communication with the dust collector 20, generates the suction required to draw in the dust.

A suction port 11 is penetratingly formed on the bottom surface of the main body 10 defining the appearance to suck dust from the floor. In addition, an air discharge narrow hole 12 for discharging air sucked by the blower 30 to the outside of the main body 10 and a dust discharge port 13 are penetratingly formed on the top surface of the main body 10 . It is used to discharge the dust collected in the dust collector 20 into a docking station (not shown) when the robot cleaner 1 is docked with the docking station.

The rotating brush 14 is arranged at the bottom of the main body 10 to sweep the dust on the floor or make the dust on the floor fly upwards, thereby improving the dust absorption efficiency.

The rotary brush 14 has a long cylindrical shape and is rotatably installed so as to be partially exposed from the bottom surface of the main body 10 . In order to accommodate the brush 14 , the main body 10 has an arc-shaped installation groove 15 having a predetermined depth to accommodate the rotating brush 14 .

The suction port 11 is formed between the bottom surface of the main body 10 and one end of the mounting groove 15, and has a predetermined width approximately equal to the length of the rotating brush 14, thereby allowing dust to be swept or lifted upward by the operation of the rotating brush 14. It is sucked into the dust collector 20 through the suction port 11 .

A pair of motorized wheels 16 are also provided at the bottom of the main body 10, thereby allowing the robot cleaner 1 to walk on the floor. The pair of motorized wheels 16 can be selectively driven by a drive motor (not shown) configured to independently rotate the drive wheels 16, thereby enabling linear and rotational motion of the main body 10 and ultimately allowing the robot cleaner 1 to move along the Walk in the desired direction.

In addition, provided in the main body 10 are: a controller 19 for controlling the operation of the robot cleaner 1; a rechargeable battery 17 for supplying power required for the operation of the robot cleaner 1; an obstacle detection sensor 18, for example, an infrared sensor, An ultrasonic sensor or the like, for example, is mounted on a side surface of the main body 10 for avoiding obstacles.

The obstacle detection sensor 18 measures the distance between the robot cleaner 1 and an obstacle (for example, a wall or furniture) near the robot cleaner 1 and transmits the measured information to the controller 19 . The controller 19 controls the operation of the pair of electric wheels 16 based on the transmitted information.

The blower 30 for generating suction applied to the dust collector 20 includes a motor part 30 a for installing a motor 31 and a fan part 30 b for installing a fan 32 . A motor 31 for generating electric power and a fan 32 for generating suction based on receiving electric power from the motor 31 are housed in one casing 33 .

The fan 32 of the blower 30 according to the present embodiment is a centrifugal force fan that sucks air in an axial direction and discharges the sucked air in a radial direction. The air discharged from the fan 32 first cools the motor 31, and then is radially discharged through a plurality of ventilation holes 34 perforated in the motor portion 30a. Finally, the air is discharged to the outside of the main body 10 through air discharge slits 12 perforated on the top surface of the main body 10 .

The dust collector 20 is installed in the main body 10 at the side of the blower 30 for receiving dust sucked through the suction port 11 .

The dust collector 20 according to the first embodiment has an approximately rectangular box shape. The dust collector 20 has a bottom communicating with the suction port 11 and a side communicating with the blower 30 so as to suck and collect dust from the floor by utilizing suction force generated by the blower 30 .

The interior of the dust collector 20 is divided into several storage areas to allow dust to be sorted and collected according to its different weights. More specifically, the dust collector 20 has: a first collection area 40 defined at the lower portion of the dust collector 20 for containing relatively heavy dust; a second collection area 50 defined at the upper portion of the dust collector 20 for To accommodate relatively light dust; connecting channel 21, so that the first collection area 40 and the second collection area 50 communicate with each other.

A dust amount sensor (not shown) for detecting the amount of dust collected in the dust collector 20 is provided inside the dust collector 20 . If a predetermined amount of dust has accumulated in the dust collector 20 , the robot cleaner 1 will walk to a stop station (not shown) to empty the dust collector 20 .

Fig. 3 is a sectional view showing important parts of the robot cleaner according to the first embodiment.

As shown in FIG. 3, the first collection area 40 has an approximately horizontal lower surface, and the suction port 11 is arranged adjacent to the floor. Therefore, once the dust-containing air is introduced into the suction port 11 , the air flows horizontally in the first collection area 40 .

The suction inlet 11 is provided with a guide portion 11 a inclined downward close to the floor for guiding dust cleaned by the rotating brush 14 into the first collection area 40 .

Due to the use of the guide portion 11a, relatively heavy dust that is difficult to be sucked into the dust collector 20 by only the suction force generated by the blower 30 can be easily cleaned by the rotation of the rotating brush 14, and directly introduced into the first collector. District 40. As a result, the first collection area 40 may function like a dust pan, thereby improving the cleaning efficiency of the robot cleaner 1 .

A backflow prevention member 41 is provided on the upper surface of the first collection area 40 near the suction port 11 to prevent the dust collected in the dust collector 20 from backflowing and being discharged through the suction port 11 .

The backflow prevention member 41 is joined to the upper surface of the first collection area 40 by, for example, a hinge 42, but may also be joined to the first collection area by any other type of fastening means that allows the backflow prevention member 41 to rotate to open/close the suction inlet 11. The upper surface of zone 40.

The backflow prevention member 41 is used to close the suction port 11 when the robot cleaner 1 is not in operation. Whenever the robot cleaner 1 starts a cleaning operation, the backflow preventing member 41 is pivotally rotated in the air suction direction by the suction force of the blower 30 to open the suction port 11 , thereby allowing dust to be sucked into the dust collector 20 .

In addition, when the work of the robot cleaner 1 is completed, the backflow prevention member 41 returns to its original position to close the suction port 11 , thereby preventing collected dust from being discharged to the outside through the suction port 11 .

Although the current embodiment shows that the backflow prevention member 41 is pivotally rotated by the suction force of the blower 30, it should be understood that the backflow prevention member may open or close the suction port by another driving device.

The end of the first collection area 40 is provided with an acceleration portion 43 serving as a flow channel with a reduced cross-sectional area. The acceleration portion 43 reduces the air suction cross-sectional area and increases the flow rate (flow rate) of the air passing through the first collection area 40, thereby allowing the suctioned air containing dust to move upwards to the second collection area under increased force. District 50.

The second collection area 50 defined above the first collection area 40 communicates with the first collection area 40 through the connection channel 21 and serves to collect relatively light dust therein. The second collection area 50 accommodates a filter 51 at one side thereof to purify the air sucked by the blower 30 to discharge clean air. On the other side of the second collection area 50, a dividing member 52 is provided, and the dividing member 52 protrudes upward from the bottom of the second collection area 50 to prevent the dust collected in the second collection area 50 from flowing back to the first collection area through the connecting channel 21. collection area 40.

As a result, relatively light dust is moved into the second collection area 50 after passing through the first collection area 40 by the suction force of the blower 30 . In this case, the first collection area 40 serves as a connecting passage leading light dust into the second collection area 50, and the dust can be vertically defined between the first collection area 40 and the second collection area 50 The connecting channel 21 moves upwards and is thus collected in the second collection area 50 .

The second collection area 50 has: a circulation port 53 formed through a hole in the top surface of the second collection area 50 to communicate with the dust discharge port 13 ; and an opening/closing device 54 to open or close the circulation port 53 . Once the robot cleaner 1 is docked with the docking station, the opening/closing device 54 opens the circulation port 53 to remove dust collected in the dust collector 20 through the circulation port 53 and the dust discharge port 13 .

FIG. 5 is a graph comparing the cleaning performance of the robot cleaner according to the current embodiment with that of a conventional robot cleaner.

Here, it should be noted that FIG. 5 shows experimental results obtained using a blower having a very low power (about 100W) lower than that of a conventional vacuum cleaner (about 600W).

In addition, it should be noted that the cleaning efficiency shown in the above comparison chart is represented by the percentage of the weight of dust collected in the dust collector relative to the weight of dust dispersed in a predetermined area.

As shown in Fig. 5, the cleaning efficiency of the conventional robot vacuum cleaner previously disclosed here is 72%. The connecting pipes extending vertically at the head are collected in the filter. The robot cleaner according to the current embodiment can achieve a cleaning efficiency of 95% compared with the conventional robot cleaner in which relatively heavy dust is swept into the first collection area by the rotation of the rotating brush , while relatively light dust is collected in the second collection area by the suction of the blower.

In conclusion, it can be said that the robot cleaner according to the present embodiment can achieve improved cleaning efficiency as compared with the conventional art.

Hereinafter, the operation of the robot cleaner according to the first embodiment will be described with reference to FIGS. 3 and 4 .

Fig. 4 is a sectional view showing the operation of the robot cleaner according to the first embodiment.

If the user starts the robot cleaner 1, the blower 30 and the rotating brush 14 are operated. As the blower 30 generates suction, as shown in FIG. 4 , the backflow prevention member 41 provided in the first collection area 40 pivotally rotates to open the suction port 11 , thereby allowing dust to be sucked into the dust collector 20 .

In this case, relatively light dust is scattered upward and relatively heavy dust is swept upward by the rotation of the rotary brush 14 . Here, the swept relatively heavy dust is continuously swept through the guide portion 11 a to be collected in the first collection area 40 .

In addition, light dust passes through the first collection area 40 and then increases in flow velocity while passing through the acceleration portion 43 of the flow channel having a reduced cross-sectional area. As a result, light dust can move upwards through the connecting channel 21 into the second collection area 50 . Once the light dust moves upward and is collected in the second collection area 50 , the dividing member 52 may prevent the dust from flowing backward into the first collection area 40 .

Then, if the user ends the operation of the robot cleaner 1, the operations of the blower 30 and the rotating brush 14 are stopped. With the stop of the blower 30, the backflow preventing member 41 provided in the first collection area 40 returns to its original position to close the suction port 11, thereby preventing the dust collected in the dust collector 20 from being discharged through the suction port 11 .

As a result, the dust collector 20 included in the robot cleaner 1 according to the first embodiment can separately collect relatively heavy dust in the first collecting area 40 defined in the lower portion thereof, and collect relatively heavy dust in the second collecting area 40 defined in the upper portion thereof. Relatively light dust collects in zone 50 alone.

Dust collected in the dust collector 20 may be removed from the robot cleaner 1 when the robot cleaner 1 is docked with a docking station (not shown). In addition, relatively heavy dust collected in the first collection area 40 that is not removed by the suction of the stop station may be removed as the user pivotally rotates the backflow preventing member 41 closing the suction inlet 11 with his/her fingers or the like.

In the case of the robot cleaner 1 according to the first embodiment, although it uses a relatively small blower fan 30 with low suction performance, it can sweep heavy dust into the first collection area 40 by the rotation of the rotating brush 14, Meanwhile, relatively light dust may be collected in the second collection area 50 by the suction force of the blower 30 . As a result, the robot cleaner 1 can achieve maximum cleaning performance even though it has a compact configuration, and can prevent collected dust from being discharged through the suction port 11 by using the backflow prevention member 41 provided in the first collection area 40 .

Next, a robot cleaner according to a second embodiment will be described.

In the following description, the same components as those of the robot cleaner according to the previously described first embodiment will be denoted by the same reference numerals, and their descriptions will be omitted.

The robot cleaner according to the second embodiment is basically the same as the robot cleaner according to the first embodiment except for the configuration of the dust collector.

Fig. 6 is a sectional view showing the overall configuration of a robot cleaner according to a second embodiment. FIG. 7 is a perspective view showing a dust collector included in a robot cleaner according to a second embodiment. In addition, FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7 , and FIG. 9 is a cross-sectional view taken along line B-B of FIG. 7 .

As shown in FIG. 6, the dust collector 60 included in the robot cleaner according to the second embodiment has an approximately rectangular box shape. The dust collector 60 has suction narrow holes 61 (61a and 61b) formed in its lower part, the total size of the suction narrow holes 61 (61a and 61b) corresponds to the size of the suction port 11, and the upper part of the dust collector 60 is configured to Blower 30 communicates.

As the blower 30 and the rotating brush 14 are operated, dust on the floor may be collected into the dust collector 60 .

The dust collector 60 includes a top cover 63 . The top cover 63 is formed with an opening 64 communicating with the dust discharge port 13 and an opening/closing device 65 opening or closing the opening 64 . Once the robot cleaner 1 is docked with the docking station, the opening/closing device 65 opens the opening 64 to remove dust collected in the dust collector 60 through the opening 64 and the dust discharge port 13 .

As shown in FIG. 7 , the interior of the dust collector 60 is divided into a plurality of collection areas 70 and 80 . More specifically, the dust collector 60 includes: a pair of first collection areas 70 for collecting dust cleaned by the rotational force of the rotating brush 14; The collection area 70 is separated and configured to communicate with the blower 30 to collect dust on the floor by utilizing the suction force of the blower 30 and the rotation force of the rotary brush 14 .

The suction narrow holes 61 include: first suction narrow holes 61 b formed along the lower ends of the respective first collection areas 70 ; and second suction narrow holes 61 a formed along the lower ends of the second collection areas 80 .

According to the configuration described above, the dust introduced into the first suction narrow hole 61 b is collected in the first collection area 70 , and the dust introduced into the second suction narrow hole 61 a is collected in the second collection area 80 . As a result, the dust collected in the first collection area 70 is not mixed with the dust collected in the second collection area 80 .

As shown in FIGS. 7 and 9, the pair of first collection areas 70 are separated from the second collection area 80 by a vertical partition 62, and are hermetically sealed except for the first suction narrow hole 61b.

Since the first collection areas 70 are not in communication with the blower 30 , they are not suitable for collecting dust by the suction of the blower 30 . Only relatively heavy dust is swept and collected in the first collecting area 70 only by the rotating force of the rotating brush 14 .

Each first collection area 70 has an approximately horizontal bottom surface, and is provided on the bottom surface thereof with at least one wall 71 having a predetermined height to prevent collected dust from being discharged to the outside through the second suction narrow hole 61a.

As shown in FIGS. 7 and 8 , the second collection area 80 is divided into upper and lower double-layer collection areas by a dividing member 82 to define a suction passage 81 along which the dust will be sucked by the operation of the blower 30 , and allow dust to be sorted and collected according to its weight.

Specifically, the second collection area 80 includes: a lower collection area 83, defined at the bottom of the second collection area 80, for receiving relatively heavy dust; an upper collection area 84, defined above the lower collection area 83, for receiving Relatively light dust.

The lower collection area 83 provides a relatively heavy dust collection space, and has an approximately horizontal bottom surface. A wall 83a having a predetermined height is provided on the bottom surface of the lower collection area 83 to prevent dust collected in the lower collection area 83 from being discharged to the outside through the suction narrow hole 61b.

The upper collection area 84 communicates with the lower collection area 83 to collect relatively light dust. The upper collection area 84 has a flow slot 85 for the blower 30 which in turn is covered by a filter 86 to clean the air sucked in by the blower 30 and discharge the clean air to the outside.

The dividing member 82 is inclined upward toward the rear side. One end of the dividing member 82 is formed with a vertically extending portion 82 a for preventing dust collected in the upper collection area 84 from flowing backward into the lower collection area 83 .

According to the above configuration, relatively light dust is collected in the upper collection area 84 through the lower collection area 83 by the suction force of the blower 30 and the rotation force of the rotary brush 14 . In addition, relatively heavy dust is swept by the rotating force of the rotating brush 14 and collected in the lower collecting area 83 .

Hereinafter, the operation of the robot cleaner according to the second embodiment will be described with reference to the drawings.

If the user starts the robot cleaner 1, the blower 30 and the rotating brush 14 are operated. According to the operation of the rotating brush 14, relatively heavy dust is swept and collected into the first collection area 70 and the second collection area 80 through the first suction narrow hole 61b and the second suction narrow hole 61a.

In this case, the guide portion 11 a provided in the suction port 11 of the main body 10 serves to allow dust swept by the rotating brush 14 to be easily introduced into the first collection area 70 and the second collection area 80 .

In addition, as the blower 30 is operated, dust may be introduced into the second collection area 80 communicating with the blower 30 through the second suction narrow hole 61 a by the suction force of the blower 30 and the rotation force of the rotary brush 14 .

In this case, relatively heavy dust is swept by the rotating brush 14 and collected in the lower collection area 83 of the second collection area 80 . In addition, relatively light dust is first scattered upward by the rotating brush 14 and then collected into the upper collection area 84 through the lower collection area 83 by the suction force of the blower 30 .

By allowing the first collection area 70 to collect dust only by the rotational force of the rotating brush 14, and allowing the second collection area 80 to collect dust by the interaction of the rotational force of the rotating brush 14 and the suction of the blower 30, improved cleaning efficiency.

In addition, among the plurality of first and second suction narrow holes 61 corresponding to the suction port 11 of the main body 10, since the cross-sectional area of the second collection narrow hole 61a of the second collection area 80 is smaller than the cross-sectional area of the suction port 11 of the main body 10 area, so compared to the prior art, a smaller air intake channel is provided, thereby achieving enhanced suction.

As a result, even with a blower fan having the same power as that of the prior art, it is possible to suck the dust scattered upward by the rotating brush with stronger suction than that of the prior art, and by using it in the same manner as that of the prior art The rotating brush sweeps relatively heavy and large dust.

As apparent from the above description, the present embodiment provides a robot cleaner having the following several effects.

First of all, the robot cleaner according to the current embodiment can clean (for example) relatively heavy dust by using the rotating brush and the first collection area defined in the lower part of the dust collector while collecting (for example) relatively heavy dust by suction generated by the blower. Light dust, resulting in improved cleaning performance.

Second, by defining the first and second collection areas in a single dust collector to allow the dust to be sorted and collected according to its weight, it is possible to further improve the cleaning performance and facilitate the discharge of the dust collected in the dust collector.

Third, the current embodiment may have an effect of preventing dust collected in the dust collector from being discharged to the outside through the suction port due to the provision of the backflow prevention member in the dust collector.

Fourth, the cleaning efficiency of counterweight dust and the like can be improved by the guide portion provided at the suction port.

Fifth, according to the current embodiment, the dust collector may include a plurality of suction narrow holes each having a cross-sectional area smaller than that of the suction port. Therefore, it has the effect of not only increasing the suction force of the blower, but also allowing the dust to be effectively cleaned by the rotating force of the rotating brush, so that the cleaning performance is improved.

Sixth, when the suction slits include the first suction slit that sucks dust through the operation of the rotating brush and the blower and the second suction slit that sucks the dust only through the operation of the rotating brush, the current embodiment can achieve collection with mutual Improved capacity for various dusts of different sizes.

While certain embodiments have been shown and described, it will be understood by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents limited.

Claims (21)

1. robot cleaner comprises:

Suction inlet is used to suck dust;

Dust-collector is used to hold the dust that sucks by suction inlet;

Rotating brush is arranged on a side of suction inlet,

Air blast, generation will be applied to the suction of dust-collector,

Wherein, robot cleaner is constructed to collect in the dust-collector by the driving force cleaning dust of rotating brush and with dust,

Wherein, dust-collector comprises a plurality of collecting regions that are used to hold dust, described a plurality of collecting region comprises first collecting region of the bottom that is limited to dust-collector and is limited to second collecting region top and that directly communicate with air blast of dust-collector that first collecting region communicates mutually and directly do not communicate with air blast with second collecting region by the interface channel of vertical extension.

2. robot cleaner as claimed in claim 1, wherein, dust-collector comprises the dust adverse current that is used for preventing being contained in second collecting region division member in first collecting region.

3. robot cleaner as claimed in claim 1, wherein, dust-collector comprises that the dust that is used for preventing dust-collector prevents member by the adverse current of suction inlet discharging.

4. robot cleaner as claimed in claim 3, wherein, adverse current prevents that member is suitable for opening or closing suction inlet according to the operation of air blast.

5. robot cleaner as claimed in claim 4, wherein, adverse current prevents that member is attached to the upper surface of first collecting region, and rotates pivotally by the suction of air blast.

6. robot cleaner as claimed in claim 1 also comprises:

Targeting part is used for the dust by the rotating brush cleaning is guided to suction inlet.

7. robot cleaner comprises:

Main body has the suction inlet that is used to suck dust;

Air blast is arranged in the main body, to produce suction;

Rotating brush is arranged on a side of suction inlet;

Dust-collector is used to hold the dust that sucks by suction inlet, and described dust-collector comprises: at least one first collecting region is used to hold the dust by the rotating brush cleaning; Second collecting region is used to hold the dust that the reciprocation by rotating brush and air blast is introduced into.

8. robot cleaner as claimed in claim 7, wherein, dust-collector comprises a plurality of suction slots that communicate with suction inlet, at least one sucks the suction affects that slot is not subjected to air blast.

9. robot cleaner as claimed in claim 8, wherein, described a plurality of suction slots comprise: at least one first suction slot, communicate with at least one first collecting region, suck dust with the operation of only passing through rotating brush; Second sucks slot, communicates with second collecting region, sucks dust with the operation by rotating brush and air blast.

10. robot cleaner as claimed in claim 7, wherein, second collecting region is positioned at the top of first collecting region.

11. robot cleaner as claimed in claim 7, wherein, dust-collector comprises that adverse current prevents member, is used for preventing that the dust of dust-collector is discharged by suction inlet.

12. robot cleaner as claimed in claim 7, wherein, the lower surface of the suction inlet and first collecting region all is arranged on the bottom of main body, to be positioned at the position of approaching the floor.

13. robot cleaner as claimed in claim 7 also comprises:

Targeting part is used for the dust by the rotating brush cleaning is guided to suction inlet.

14. a robot cleaner comprises:

Main body comprises the suction inlet that is used to suck dust;

Air blast is arranged in the main body, and produces the suction that is used to suck dust;

Rotating brush is arranged on the suction inlet place, so that dust is introduced in the suction inlet;

Dust-collector holds the dust that sucks by suction inlet, and dust-collector comprises: at least one first collecting region is connected directly to suction inlet and communicates with rotating brush; Second collecting region holds the dust of introducing by suction inlet and directly communicates with air blast, thereby the reciprocation of the dust that holds at the second collecting region place by rotating brush and air blast is received.

15. robot cleaner as claimed in claim 14, wherein, second collecting region communicates with first collecting region by interface channel.

16. robot cleaner as claimed in claim 14, wherein, described at least one first collecting region is adjacent with second collecting region and separate with second collecting region.

17. robot cleaner as claimed in claim 16, wherein, second collecting region comprises the circulation slot that communicates with air blast.

18. robot cleaner as claimed in claim 16, wherein, described at least one first collecting region and second collecting region comprise the suction slot that communicates with suction inlet separately.

19. robot cleaner as claimed in claim 16, wherein, second collecting region comprises the division member that tilts towards side direction thereafter.

20. robot cleaner as claimed in claim 19, wherein, second collecting region comprises collecting region and last collecting region down, and described division member will descend collecting region and last collecting region to demarcate.

21. robot cleaner as claimed in claim 18, wherein, described at least one first collecting region and second collecting region comprise at least one wall with predetermined altitude separately, are discharged into the outside to prevent dust by sucking slot.

Images