Cyclone type dust collection system, cleaning robot and dust collection method

Abstract

The invention discloses a cyclone type dust collection system, a cleaning robot and a dust collection method.The dust collection system comprises a dust collection opening, a dust collection box, a separator and a negative pressure generator, the separator can form spiral air flow, garbage is separated from the air flow through centrifugal force and collected in the dust collection box, and therefore a filter screen can be replaced, and the use cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sweeping robots, and in particular to a cyclone type dust collection system, a cleaning robot and a dust collection method. Background Art

[0002] The robot vacuum cleaner includes a vacuum system, which includes a vacuum port, a dust box, a filter and a fan. The filter is located between the dust box and the fan to block garbage and keep it in the dust box instead of flowing to the fan. The filter is a consumable part. After a period of use, garbage will adhere to the filter, increasing the resistance of the airflow and thus affecting the suction of the airflow. Therefore, the filter needs to be replaced regularly, resulting in high cost of use. Summary of the invention

[0003] The object of the present invention is to provide a cyclonic dust collection system, a cleaning robot and a dust collection method, wherein the separator can form a spiral wind flow, use centrifugal force to separate garbage from the wind flow and collect it in a dust collection box, thereby replacing the filter screen and reducing the use cost.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A cyclone dust collection system comprises a dust collection port, a dust collection box, a separator and a negative pressure generator;

[0006] The separator includes an inner cavity and a spiral air duct, the beginning of the spiral air duct is connected to the dust suction port, and the end of the spiral air duct is connected to the inner cavity; the wall surface of the inner cavity is provided with a separation port, and the separation port is connected to the dust collection box;

[0007] The inner cavity is communicated with the negative pressure generator.

[0008] In some embodiments, the separation port is in the shape of an elongated strip and is circumferentially extended along the wall surface of the inner cavity.

[0009] In some embodiments, the separator further comprises an air inlet connected to the beginning of the spiral air duct;

[0010] The air inlet is connected with the dust suction port; the dust suction port is provided with a roller.

[0011] In some embodiments, the separator further comprises an air outlet pipe and an air outlet, the air outlet pipe is arranged inside the inner cavity, and the air outlet pipe and the inner cavity are arranged coaxially;

[0012] One end of the air outlet pipe is arranged near the separation port, a through hole is arranged on the wall surface of the end of the air outlet pipe near the separation port, the other end of the air outlet pipe is connected to the air outlet, and the air outlet is connected to the negative pressure generator.

[0013] In some embodiments, the through-holes are covered with a filter.

[0014] In some embodiments, the separator is disposed outside the dust box.

[0015] In some embodiments, the separator is disposed inside the dust box.

[0016] In some embodiments, the dust box includes a first cavity and a second cavity, the first cavity is used to store garbage, the second cavity is provided with a spiral air duct and an air outlet pipe, and the wall of the second cavity is provided with a separation port connected to the first cavity.

[0017] A cleaning robot comprises the above-mentioned dust collection system.

[0018] A dust collection method, the method comprising the following steps:

[0019] The negative pressure generator works to form negative pressure airflow, and the garbage is sucked from the suction port and flows to the separator under the action of the negative pressure airflow;

[0020] The spiral air duct of the separator causes the airflow to flow in a spiral direction, forming a spiral airflow, and flows toward the separation port along direction A;

[0021] The garbage is separated from the separation port and enters the dust collection box under the action of centrifugation;

[0022] The wind flow after separating the garbage flows to the outlet pipe, flows to the outlet along the B direction, and finally flows to the outside; among them, the direction of A is opposite to that of B.

[0023] The beneficial effects of the present invention are as follows: the separator can form a spiral wind flow, use centrifugal force to separate garbage from the wind flow and collect it in a dust collection box, thereby replacing the filter screen and reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural diagram of a first embodiment of a dust collection system of the present invention;

[0025] Figure 2 is a structural diagram of a first embodiment of a dust collection system of the present invention;

[0026] Figure 3 is a cross-sectional view of a first embodiment of a dust collection system of the present invention;

[0027] Figure 4 A structural diagram of a separator of a first embodiment of a dust collection system of the present invention;

[0028] Figure 5 An exploded view of a separator of a first embodiment of a dust collection system of the present invention;

[0029] Figure 6 A cross-sectional view of a separator of a first embodiment of a dust collection system of the present invention;

[0030] Figure 7 is a structural diagram of a second embodiment of the dust collection system of the present invention;

[0031] Figure 8 is an exploded view of a second embodiment of the dust collection system of the present invention;

[0032] Fig. 9 is a cross-sectional view of a second embodiment of the dust collection system of the present invention;

[0033] Fig.10 is a cross-sectional view of a second embodiment of the dust collection system of the present invention;

[0034] Fig.11 is a structural diagram of a third embodiment of the dust collection system of the present invention;

[0035] Fig.12 is a cross-sectional view of a third embodiment of the dust collection system of the present invention;

[0036] Fig.13 is an exploded view of a third embodiment of the dust collection system of the present invention;

[0037] Fig.14 An exploded view of a separator of a third embodiment of a dust collection system of the present invention;

[0038] Fig.15 A cross-sectional view of a separator of a third embodiment of a dust collection system of the present invention;

[0039] Among them: 100-dust suction system; 1-dust box; 1a-first cavity; 1b-second cavity; 2-separator; 2a-air inlet; 2b-air outlet; 20-inner cavity; 21-spiral air duct; 22-separation port; 23-air outlet pipe; 231-through hole; 24-filter element; 3-negative pressure generator; 4-dust suction port; 5-first pipe; 6-second pipe; 200-chassis; 210-drum. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] First embodiment:

[0042] refer to Figures 1 to 6 , a cyclone dust collection system 100, comprising a dust collection port 4, a dust collection box 1, a separator 2 and a negative pressure generator 3;

[0043] The dust suction port 4 may be provided on the chassis 200 , and a roller 210 may be selectively provided at the position of the dust suction port 4 as required, that is, the roller 210 may be provided at the corresponding position of the dust suction port 4 , or the roller 210 may not be provided;

[0044] refer to Figures 3 to 6The separator 2 includes an inner cavity 20 and a spiral air duct 21. The starting end of the spiral air duct 21 is connected to the dust suction port 4, and the end of the spiral air duct 21 is connected to the inner cavity 20. The starting end is the upstream direction of the wind flow, and the end is the downstream direction of the wind flow.

[0045] The wall surface of the inner cavity 20 is provided with a separation port 22, and the separation port 22 is connected to the dust collecting box 1;

[0046] The inner cavity 20 is communicated with the negative pressure generator 3, which may be a negative pressure motor or a fan, capable of forming a negative pressure wind flow;

[0047] refer to Figure 5 The spiral air duct 21 has a spiral blade 211 structure, and the wind flow forms a spiral wind flow under the guidance of the spiral blade 211;

[0048] Working principle: garbage is sucked into the suction port 4 under the action of negative pressure wind flow, and the spiral air duct 21 causes the wind flow to become a spiral wind flow and flow toward the separation port 22. The garbage is separated from the separation port 22 and enters the dust collecting box 1 under the action of centrifugal force. The wind flow that has separated the garbage flows to the outside through the negative pressure generator 3.

[0049] In this way, the separator 2 can form a spiral wind flow, use centrifugal force to separate the garbage from the wind flow and collect the garbage in the dust box 1, so that it can replace the filter, save the setting of the filter, and reduce the use cost.

[0050] refer to Figure 6 The separation port 22 is disposed at the end of the inner cavity 20 away from the spiral air duct 21. The wind flow moves or moves along the direction A, and the garbage will eventually gather at the end of the inner cavity 20. The separation port 22 is disposed at the end position to promote more complete separation of the garbage and be collected in the dust box 1.

[0051] refer to Figure 4 and Figure 6 The separation opening 22 is in the shape of a long strip and is arranged to extend circumferentially along the wall surface of the inner cavity 20. In this way, the garbage can have more time and space to be separated from the wind flow during the spiral motion or circular motion, and the garbage separation is more complete and the separation efficiency is higher.

[0052] refer to Figures 4 to 6 The separator 2 can be in the shape of a tube, a cup or a cylinder, and its inner cavity 20 is naturally in the shape of a tube, a cup or a cylinder; the spiral air duct 21 can be arranged inside the inner cavity 20, for example, the spiral air duct 21 is arranged at one end of the inner cavity 20, and the separation port 22 is arranged at the other end of the inner cavity 20; the spiral blades 211 of the spiral air duct 21 are in contact with the wall surface of the inner cavity 20, so that the spiral radius of the spiral air duct 21 is basically the same as the radius of the inner cavity 20, which reduces wind resistance, makes the flow smoother, and is easy to manufacture.

[0053] The separator 2 also includes an air inlet 2a, which is tangentially connected to the beginning of the spiral air duct 21, which is conducive to reducing wind resistance and making the flow smoother;

[0054] refer to Figure 3 The air inlet 2a can be connected to the dust suction port 4 through the first pipe 5, or the air inlet 2a can be directly connected to the dust suction port 4.

[0055] refer to Figure 5 and Figure 6 The separator 2 further includes an air outlet pipe 23 and an air outlet 2b, the air outlet pipe 23 is arranged inside the inner cavity 20, and the air outlet pipe 23 and the inner cavity 20 are coaxially arranged;

[0056] One end of the air outlet pipe 23 is arranged near the separation port 22, that is, it is extended near the separation port 22, and a through hole 231 is arranged on the wall surface of the end of the air outlet pipe 23 near the separation port 22, and the other end of the air outlet pipe 23 is connected to the air outlet 2b, and the air outlet 2b is connected to the negative pressure generator 3, and the air outlet 2b can be connected to the negative pressure generator 3 through the second pipe 6. In this way, the wind flow separated from the garbage flows from the air outlet pipe 23 to the air outlet 2b, and then flows to the outside through the negative pressure generator 3.

[0057] refer to Figure 6 The spiral wind flows along direction A to the separation port 22, and the wind flow that has separated the garbage flows into the air outlet 23, and flows along direction B to the air outlet 2b, and finally flows to the outside, wherein the directions of direction A and direction B are opposite. In this way, the garbage will move close to the wall of the inner cavity 20 under the action of centrifugation, and the wind flow in the central area basically has no garbage. The wind flow in the central area flows to the air outlet 23, ensuring that the garbage is effectively separated to the dust box 1. In addition, the flow directions of direction A and direction B are opposite, and it is quite difficult for the garbage to move to direction B under the inertia of centrifugal force, which effectively prompts the garbage to stay in the inner cavity 20 for spiral motion or circular motion, and finally separated to the dust box 1, achieving full separation of the garbage.

[0058] In addition, the air outlet pipe 23 and the inner cavity 20 are coaxially arranged, and the other end of the air outlet pipe 23 is extended in a direction close to the spiral air duct 21. The spiral air duct 21 can be arranged around the end of the air outlet pipe 23 to make the structure more compact.

[0059] refer to Figure 5 and Figure 6 , the through hole 231 is covered with a filter 24. The wind flow needs to pass through the filter 24 before it can flow into the air outlet pipe 23. The filter 24 can be annular and can be mounted or clamped on the air outlet pipe 23. Due to the different particle sizes or weights of garbage, the centrifugal force obtained is different. There may be a small amount of garbage with smaller particles or lighter weight distributed in the central area of ​​the wind flow. In order to further reduce or prevent the garbage from flowing to the outside, a filter 24 can be set to block the garbage and force the garbage to stay in the inner cavity 20 and continue to perform spiral motion or circular motion.

[0060] In addition, since there is basically no garbage or very little garbage in the central area of ​​the wind flow, and the garbage tends to move outward under the action of centrifugal force, the amount of garbage attached to the filter element 24 is small, and the filter element 24 can be used for a long time without frequent replacement.

[0061] refer to Figure 1 and Figure 2 , the separator 2 can be arranged outside the dust box 1. The separator 2 and the dust box 1 are split structures or modular structures, and the separator 2 and the dust box 1 are separately manufactured and then assembled together. The separator 2 can be arranged outside the top of the dust box 1.

[0062] Second embodiment:

[0063] refer to Figures 7 to 10 The dust collection system 100 of the second embodiment is basically the same in structure and principle as the first embodiment, except that the separator 2 is arranged inside the dust box 1, and the separator 2 and the dust box 1 are an integral structure, which can be understood as a common structure between the separator 2 and the dust box 1.

[0064] Specifically, the dust box 1 is provided with two cavities, namely a first cavity 1a and a second cavity 1b. The two cavities can be integrally formed in an injection molding process. The first cavity 1a is used to collect and store garbage, and the second cavity 1b constitutes an inner cavity 20 of the separator 2. Parts such as the spiral air duct 21, the air outlet pipe 23 and the filter element 24 are assembled in the second cavity 1b. The wall of the second cavity 1b is provided with a separation port 22 connected to the first cavity 1a, so that the separator 2 is formed by utilizing the space of the second cavity 1b.

[0065] Preferably, the dust box 1 can be arranged at an angle to save space, and the corresponding spiral air duct 21 is located at the bottom of the inner cavity 20, and the separation port 22 is located at the top of the inner cavity 20, so that the dust box 1 can store more garbage.

[0066] Third embodiment:

[0067] refer to Figures 11 to 15 The dust collection system 100 of the third embodiment is basically the same in structure and principle as the first embodiment, except that the separator 2 is arranged inside the dust box 1, the separator 2 and the dust box 1 are split structures or modular structures, and the separator 2 and the dust box 1 are manufactured separately and then assembled together.

[0068] The connection mode and position relationship between the separator 2 and the dust box 1 in the above three embodiments can be selectively set according to different working conditions, for example:

[0069] For a large cleaning robot, the dust box 1 has a larger space, and the first embodiment can be adopted, in which the separator 2 is arranged outside the dust box 1; of course, a split structure or an integral structure can be adopted.

[0070] For a medium-sized cleaning robot, the space of the dust box 1 is medium, and the second embodiment can be adopted. The separator 2 is arranged inside the dust box 1 and is designed as an integral structure. Of course, it can also be designed as a split structure.

[0071] For a small cleaning robot, the space of the dust box 1 is small, and the third embodiment can be adopted. The separator 2 is arranged inside the dust box 1, and of course, it can also be arranged outside the dust box 1.

[0072] Fourth embodiment:

[0073] A cleaning robot includes the above-mentioned dust collection system 100. The chassis 200 of the robot is provided with a walking mechanism and a cleaning mechanism. The walking mechanism is provided with wheels to drive the robot to walk; the cleaning mechanism can clean the surface to be cleaned.

[0074] Fifth embodiment:

[0075] A dust collection method, the method comprising the following steps:

[0076] The negative pressure generator 3 works to form a negative pressure wind flow, and the garbage is sucked from the suction port 4 under the action of the negative pressure wind flow and flows to the separator 2;

[0077] The spiral air duct 21 of the separator 2 causes the wind flow to flow in a spiral direction, forming a spiral wind flow, and flows along the direction A toward the separation port 22;

[0078] Under the action of centrifugation, the garbage is separated from the separation port 22 and enters the dust collecting box 1;

[0079] The wind flow after separating the garbage flows to the outside.

[0080] Furthermore, the wind flow after separating the garbage flows to the air outlet pipe 23, flows to the air outlet 2b along the B direction, and finally flows to the outside through the negative pressure generator 3; wherein, the direction of the A direction is opposite to the direction of the B direction.

[0081] Thus, a spiral wind flow is formed by the separator 2, and the garbage is separated from the wind flow by centrifugal force and collected in the dust box 1, so that the filter can be replaced, the setting of the filter can be saved, and the use cost can be reduced.

[0082] The above disclosure is only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the invention.

Claims

1. A cyclonic dust collection system, characterized in that: It comprises a dust suction port (4), a dust collection box (1), a separator (2) and a negative pressure generator (3); The separator (2) comprises an inner cavity (20) and a spiral air duct (21), the starting end of the spiral air duct (21) is connected to the dust suction port (4), the end of the spiral air duct (21) is connected to the inner cavity (20), the wall surface of the inner cavity (20) is provided with a separation port (22), and the separation port (22) is connected to the dust collection box (1); The inner cavity (20) is in communication with the negative pressure generator (3).

2. A cyclone dust collection system according to claim 1, characterized in that: The separation opening (22) is arranged at the end of the inner cavity (20) away from the spiral air duct (21); the separation opening (22) is in the shape of an elongated strip and is circumferentially extended along the wall surface of the inner cavity (20).

3. A cyclone dust collection system according to claim 2, characterized in that: The spiral air duct (21) is arranged inside the inner cavity (20); The separator (2) further comprises an air inlet (2a), wherein the air inlet (2a) is connected to the beginning of the spiral air duct (21); The air inlet (2a) is in communication with the dust suction port (4).

4. A cyclone dust collection system according to claim 1, characterized in that: The separator (2) further comprises an air outlet pipe (23) and an air outlet (2b), wherein the air outlet pipe (23) is arranged inside the inner cavity (20), and the air outlet pipe (23) and the inner cavity (20) are coaxially arranged; One end of the air outlet pipe (23) is arranged close to the separation port (22), a through hole (231) is provided on the wall surface of the end of the air outlet pipe (23) close to the separation port (22), the other end of the air outlet pipe (23) is connected to the air outlet (2b), and the air outlet (2b) is connected to the negative pressure generator (3).

5. A cyclone dust collection system according to claim 4, characterized in that: The through hole (231) is covered with a filter element (24).

6. A cyclonic dust collection system according to claim 1, characterized in that: The separator (2) is arranged outside the dust collecting box (1).

7. A cyclone dust collection system according to claim 1, characterized in that: The separator (2) is arranged inside the dust collecting box (1).

8. A cyclone dust collection system according to claim 7, characterized in that: The dust collecting box (1) comprises a first cavity (1a) and a second cavity (1b); the first cavity (1a) is used for storing garbage; the second cavity (1b) is provided with the spiral air duct (21) and the air outlet pipe (23); and the wall surface of the second cavity (1b) is provided with a separation port (22) which is in communication with the first cavity (1a).

9. A cleaning robot, characterized in that: It comprises the dust collection system (100) as described in any one of claims 1 to 8.

10. A dust collection method, characterized in that: The method comprises the following steps: The negative pressure generator (3) works to form a negative pressure airflow, and the garbage is sucked from the dust suction port (4) under the action of the negative pressure airflow and flows to the separator (2); The spiral air duct (21) of the separator (2) causes the airflow to flow in a spiral direction, forming a spiral airflow, and flows along direction A toward the separation port (22); Under the action of centrifugation, the garbage is separated from the separation port (22) and enters the dust collection box (1); The wind flow after separating the garbage flows to the air outlet pipe (23), flows along the B direction to the air outlet (2b), and finally flows to the outside; Among them, the directions of A and B are opposite.

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