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EP-4740818-A1 - CYCLONE DUST ABSORPTION SYSTEM, CLEANING ROBOT, AND DUST ABSORPTION METHOD

EP4740818A1EP 4740818 A1EP4740818 A1EP 4740818A1EP-4740818-A1

Abstract

Disclosed are a cyclone dust absorption system, a cleaning robot, and a dust absorption method. The dust absorption system includes a dust absorption opening (22), a dust collection box (1), a separator (2), and a negative pressure generator (3), where the separator is capable of forming a spiral airflow, using a centrifugal force to separate garbage from the airflow and collecting the garbage in the dust collection box, thereby being capable of replacing a filter net assembly and reducing use costs. Further, an acceleration guide surface (25) is capable of accelerating flow of the spiral airflow, causing a larger centrifugal force to the garbage, and facilitating more thorough and faster separation of the garbage from a separation opening, thereby enhancing an effect of separating the garbage.

Inventors

  • ZHOU, Shengfang

Assignees

  • Foshan GreenYellow Electric Technology Co., Ltd.

Dates

Publication Date
20260513
Application Date
20250121

Claims (10)

  1. A cyclone dust absorption system, comprising: a separator (2), wherein the separator (2) comprises an inner cavity (20), a spiral air duct (21), a separation opening (22), an air inlet (2a) and an air outlet (2b), wherein one end of the inner cavity (20) is provided with the spiral air duct (21), the other end of the inner cavity (20) is provided with the separation opening (22), a starting end of the spiral air duct (21) is communicated with the air inlet (2a), an ending end of the spiral air duct (21) is communicated with the inner cavity (20), and the air outlet (2b) is communicated with the inner cavity (20); a dust absorption opening (4), being connected to the air inlet (2a); a dust collection box (1), being connected to the separation opening (22); and a negative pressure generator (3), being connected to the air outlet (2b).
  2. The cyclone dust absorption system according to claim 1, wherein the separation opening (22) is arranged on a peripheral wall of the other end portion of the inner cavity (20) relative to the spiral air duct (21), and the separation opening (22) is elongated and extends circumferentially along the peripheral wall of the inner cavity (20).
  3. The cyclone dust absorption system according to claim 1, wherein a spiral angle of the spiral air duct (21) is equal to or greater than 45°.
  4. The cyclone dust absorption system according to claim 1, wherein the separator (2) further comprises an acceleration guide surface (25), and the acceleration guide surface (25) is arranged at the other end portion of the inner cavity (20) relative to the spiral air duct (21); and the acceleration guide surface (25) is arranged in a way of gradually extending inward in a direction away from the spiral air duct (21).
  5. The cyclone dust absorption system according to claim 4, wherein the acceleration guide surface (25) is arranged in a way of gradually extending inward in the form of an arc structure; or the acceleration guide surface (25) is arranged in a way of gradually extending inward in the form of a diagonal structure.
  6. The cyclone dust absorption system according to claim 1, wherein the separator (2) further comprises an air outlet pipe (23), the air outlet pipe (23) is arranged inside the inner cavity (20) and the air outlet pipe (23) is coaxially arranged with the inner cavity (20); and the air outlet (2b) is arranged at an end portion of the inner cavity (20) close to the spiral air duct (21); and one end portion of the air outlet pipe (23) is arranged close to the separation opening (22), a through hole (231) is formed in the end portion of the air outlet pipe (23) close to the separation opening (22), and the other end portion of the air outlet pipe (23) is connected to the air outlet (2b).
  7. The cyclone dust absorption system according to claim 6, wherein the through hole (231) is covered with a filter element (24).
  8. A cleaning robot, comprising the dust absorption system (100) according to claim 1.
  9. A dust absorption method, comprising the following steps: the negative pressure generator (3) works to form a negative pressure airflow, and garbage, under the action of the negative pressure airflow, is sucked by the dust absorption opening (4) and flows into the separator (2); the spiral air duct (21) of the separator (2) causes the airflow to become a spiral airflow after spiral flow, and the spiral airflow in the inner cavity (20) then flows toward the separation opening (22) in the direction A; the garbage, under the action of a centrifugal force, is separated from the separation opening (22) and then enters the dust collection box (1); and the airflow that has separated the garbage flows into the air outlet pipe (23) and moves towards the air outlet (2b) in a direction (B), and ultimately flows to outside, wherein the direction (A) and the direction (B) are opposite.
  10. The dust absorption method according to claim 9, wherein the acceleration guide surface (25) helps to gradually decrease the spiral radius of the spiral airflow and accelerate flow of the spiral airflow, and the spiral airflow flows toward the separation opening (22).

Description

TECHNICAL FIELD The present disclosure relates to the technical field of sweeping robots, and in particular to a cyclone dust absorption system, a cleaning robot, and a dust absorption method. BACKGROUND A sweeping robot includes a dust absorption system, the dust absorption system includes a dust absorption opening, a dust collection box, a filter net assembly and a fan, where the filter net assembly is arranged between the dust collection box and the fan to block garbage and ensure that the garbage remains in the dust collection box and does not flow to the fan. The filter net assembly is a consumable component. After a period of use, the garbage will accumulate on the filter net assembly, which will increase airflow resistance and affect suction of airflow. Therefore, the filter net assembly needs to be replaced regularly, thereby leading to higher use costs. SUMMARY An objective of the present disclosure is to provide a cyclone dust absorption system, a cleaning robot, and a dust absorption method. A separator is capable of forming a spiral airflow, using a centrifugal force to separate garbage from the airflow and collecting the garbage in a dust collection box, thereby being capable of replacing a filter net assembly and reducing use costs. In order to achieve the above objective, the present disclosure adopts a technical solution as follows: a cyclone dust absorption system, including: a separator, where the separator includes an inner cavity, a spiral air duct, a separation opening, an air inlet and an air outlet, where one end of the inner cavity is provided with the spiral air duct, the other end of the inner cavity is provided with the separation opening, a starting end of the spiral air duct is communicated with the air inlet, an ending end of the spiral air duct is communicated with the inner cavity, and the air outlet is communicated with the inner cavity;a dust absorption opening, connected to the air inlet;a dust collection box, connected to the separation opening; anda negative pressure generator, connected to the air outlet. In some embodiments, the separation opening is arranged on a peripheral wall of the other end portion of the inner cavity relative to the spiral air duct, and the separation opening is elongated and extends circumferentially along the peripheral wall of the inner cavity. In some embodiments, a spiral angle of the spiral air duct is equal to or greater than 45°, or the spiral angle of the spiral air duct is equal to or greater than 90°, or the spiral angle of the spiral air duct is equal to or greater than 180°; and the spiral angle of the spiral air duct is equal to or greater than 270°; or the spiral angle of the spiral air duct is equal to or greater than 360°. In some embodiments, the separator further includes an acceleration guide surface, and the acceleration guide surface is arranged at the other end portion of the inner cavity relative to the spiral air duct; and the acceleration guide surface is arranged in a way of gradually extending inward in a direction away from the spiral air duct, the acceleration guide surface is arranged in a way of gradually extending inward in the form of an arc structure, or the acceleration guide surface is arranged in a way of gradually extending inward in the form of a diagonal structure. In some embodiments, the separator further includes an air outlet pipe, where the air outlet pipe is arranged inside the inner cavity and the air outlet pipe is coaxially arranged with the inner cavity; the air outlet is arranged at an end portion of the inner cavity close to the spiral air duct; and one end portion of the air outlet pipe is arranged close to the separation opening, a through hole is formed on a wall surface of the end portion of the air outlet pipe close to the separation opening, and the other end portion of the air outlet pipe is connected to the air outlet. In some embodiments, the through hole is covered with a filter element. A cleaning robot includes the dust absorption system. A dust absorption method includes the following steps: the negative pressure generator works to form a negative pressure airflow, and garbage, under the action of the negative pressure airflow, is sucked by the dust absorption opening and flows into the separator;the spiral air duct of the separator causes the airflow to become a spiral airflow after spiral flow, and the spiral airflow then flows toward the separation opening in a direction A;the garbage, under the action of a centrifugal force, is separated from the separation opening and then enters the dust collection box; andthe airflow that has separated the garbage flows into the air outlet pipe and moves towards the air outlet in a direction B, and ultimately flows to outside, where the direction A and the direction B are opposite. In some embodiments, the acceleration guide surface helps to gradually decrease the spiral radius of the spiral airflow and accelerate flow of the spiral airflow