CN114680728B

CN114680728B - Vacuum cleaner

Info

Publication number: CN114680728B
Application number: CN202011624899.6A
Authority: CN
Inventors: 卞庄
Original assignee: Suzhou Chenghe Cleaning Equipment Co Ltd
Current assignee: Suzhou Chenghe Cleaning Equipment Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2023-06-23
Anticipated expiration: 2040-12-30
Also published as: CN114680728A

Abstract

The invention discloses a vacuum cleaner, comprising a dust cup assembly and a vacuum motor, wherein the vacuum motor is used for generating suction force and introducing dust-containing airflow into the dust cup assembly; a float member disposed in the exhaust passage and movable toward the first end direction when the vacuum motor is started to supply a suction force; the cleaning piece and the floating piece are in transmission arrangement, so that the cleaning piece can be driven to move towards the upper end part when the floating piece moves towards the first end part. The vacuum cleaner of the invention completes the automatic ash scraping operation through the linkage mechanism between the floating piece and the cleaning piece in the dust cup, can clean the wall surface of the mesh filter in time, reduces the probability of blocking the filtering holes by dust, and improves the dust removal efficiency.

Description

Vacuum cleaner

Technical Field

The present invention relates to a vacuum cleaner.

Background

Currently, vacuum cleaners are favored as widely used cleaning devices, in particular cyclone cleaners, which do not require replacement of the filter bag. Cyclone cleaners generally comprise a dirt cup with a mesh filter therein, into which a dirt-containing air stream is introduced for cyclonic separation, the separated air stream being filtered through the mesh filter and directed in a vacuum direction. The mesh filter arranged in the dust cup mainly realizes the filtering effect through the filtering holes distributed on the dust cup, and dust with the particle size larger than that of the filtering holes carried by air flow cannot pass through the mesh filter, so that the gas-solid separation is realized. In the use process of the existing dust cup, soft garbage such as hair, fine fibers and the like is often entrained by air flow and enters the dust cup, and the soft garbage is easy to intercept by the filter holes and remain in the dust cup due to lighter weight and larger size, and long time, due to the action of vacuum suction force, the soft garbage is easy to adhere to the filter hole accessories to block the filter holes, and the filter holes are used as important nodes for the smoothness of the air flow, and the suction force of the whole dust collector is reduced due to the blocking of the filter holes, so that the dust collection effect is affected.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a vacuum cleaner capable of reducing clogging of filter holes of a mesh filter with dust.

In order to achieve the purpose of the invention, the invention adopts the following technical scheme: a vacuum cleaner comprising a dirt cup assembly and a vacuum motor, said vacuum motor configured to be operable to generate a suction force and to shut off said suction force, said dirt cup assembly comprising:

the cup body is internally provided with a cavity, and the cup body is provided with an air inlet and an air outlet which are communicated with the cavity;

a mesh filter disposed within said chamber, said mesh filter comprising a first cylindrical wall having a plurality of filter apertures formed therein to provide air escape openings from said chamber, said first cylindrical wall having an upper end and a lower end in an axial direction;

an exhaust passage capable of directing the flow of air exiting the filter aperture to the air outlet, the exhaust passage having a first end and a second end, the first end being closer to the air outlet than the second end;

a float member disposed in said exhaust passage and configured to be movable toward said first end by a suction force when said vacuum motor is activated to generate said suction force; and

a cleaning member surrounding an outer peripheral wall surface of the first cylindrical wall and movable along the outer peripheral wall surface of the first cylindrical wall toward the upper end portion direction and the lower end portion direction to clean the first cylindrical wall; the cleaning piece and the floating piece are in transmission arrangement, so that the cleaning piece can be driven to move towards the upper end part when the floating piece moves towards the first end part.

In the above aspect, it is further preferable that the dirt cup assembly further includes a weight attached to the cleaning member and configured to carry the cleaning member toward the lower end direction and the floating member toward the second end direction when the vacuum motor is turned off and suction force is lost.

In the above technical solution, it is further preferable that the dust cup assembly further includes a dust pressing member, and the dust pressing member is located below the cleaning member; the ash pressing piece and the cleaning piece are fixedly arranged, so that: when the cleaning piece moves towards the lower end part, the ash pressing piece is driven by the cleaning piece to move downwards so as to compact the garbage at the lower part of the cavity towards the inner bottom of the cavity. Further preferably, the dust pressing member is formed as an integral part with the cleaning member. Or further preferably, the dust pressing member includes a dust blocking edge protruding radially outwardly with respect to an outer peripheral wall surface of the first cylindrical wall, the dust blocking edge being configured to prevent dust falling into a lower portion of the chamber from returning to an upper portion of the chamber.

In the above technical solution, it is further preferable that the mesh filter includes a second cylindrical wall located inside the first cylindrical wall, an axis of the second cylindrical wall is parallel or collinear with an axis of the first cylindrical wall, and the exhaust passage is formed inside the second cylindrical wall.

In the above technical solution, it is further preferable that the dust cup assembly further includes a traction rope, one end of the traction rope is connected with the cleaning member, the other end of the traction rope is connected with the floating member, and the traction rope is used for transmitting the movement of the floating member to the cleaning member.

In the above technical solution, it is further preferable that the dust cup assembly is located above the vacuum motor, and the air outlet is disposed at a lower portion of the cup body.

In the above technical solution, it is further preferable that the floating member is formed of a lightweight material.

In the above technical solution, it is further preferable that the floating member is spherical.

In the foregoing aspect, it is further preferable that the vacuum cleaner further includes an electromagnet disposed adjacent to the first end of the exhaust passage, the electromagnet being configured to generate a magnetic field in response to activation of the vacuum motor and to turn off the magnetic field in response to turning off of the vacuum motor, and the floating member is provided with a magnetic attraction member that is acted upon by the magnetic field.

In the above aspect, it is further preferable that the cleaning member has a ring shape and has a first scraping bar at an inner end portion, the first scraping bar being configured to contact the plurality of the filter holes when the cleaning member moves along an outer circumferential wall surface of the first cylindrical wall. Further preferably, the cleaning member has a second wiper strip at an outer end portion, the second wiper strip being configured to contact an inner wall surface of the cup body when the cleaning member moves along an outer peripheral wall surface of the first cylindrical wall.

The vacuum cleaner of the invention completes automatic dust scraping operation by the linkage mechanism between the floating piece and the cleaning piece in the dust cup, and timely cleans the peripheral wall surface of the mesh filter, reduces the probability of blocking the filtering holes by dust, and improves the dust removal efficiency.

Drawings

FIG. 1 is a schematic view of a dirt cup assembly and vacuum motor of a vacuum cleaner in accordance with a preferred embodiment of the present invention;

FIG. 2 is a schematic diagram showing a mesh filter according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view showing the connection of a cleaning member, a counterweight, an ash pressing member, a traction rope and a floating member according to a preferred embodiment of the invention;

FIG. 4 is a schematic diagram of the airflow and the components of the dirt cup assembly of the preferred embodiment of FIG. 1 when the vacuum motor is on;

FIG. 5 is a schematic view of the air flow and components within the dirt cup assembly of the preferred embodiment of FIG. 1 after the vacuum motor has been turned on for a period of time;

FIG. 6 is a schematic view of the air flow and components within the dirt cup assembly of the preferred embodiment of FIG. 1 when the vacuum motor is turned off;

FIG. 7 is a schematic view of a dirt cup assembly and vacuum motor of a vacuum cleaner in accordance with another preferred embodiment of the present invention;

FIG. 8 is a schematic diagram of the airflow and the components of the dirt cup assembly of the preferred embodiment of FIG. 7 when the vacuum motor is on;

FIG. 9 is a schematic view of the preferred embodiment of FIG. 7, showing the airflow and components within the dirt cup assembly after the vacuum motor has been turned on for a period of time;

FIG. 10 is a schematic view of the preferred embodiment of FIG. 7, showing the airflow and components within the dirt cup assembly when the vacuum motor is turned off.

Detailed Description

In order to describe the technical content, constructional features, achieved objects and effects of the invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings, wherein the "up" and "down" positional relationships described in the present specification correspond to the up-down directional relationships in the accompanying drawings, respectively.

Referring to figure 1, there is shown a dirt cup assembly 1 and vacuum motor 2 in a vacuum cleaner of a preferred embodiment; wherein the vacuum motor 2 is mounted below the dirt cup assembly 1. The vacuum motor 2 operates as a power supply for the airflow, and the dirt cup assembly 1 operates as an execution part for the separation of the ash from the air. The vacuum motor 2 is operable to effect on and off suction forces which are capable of drawing a working air stream entrained with dust into the dirt cup assembly 1 for air-to-ash separation and for delivering the separated air.

The dirt cup assembly 1 includes a cup 11, a mesh filter 15, a float member 3, a cleaning member 4, a counterweight member 5, and an ash pressing member 6. The cup 11 is cylindrical and internally defines a chamber 12, an air inlet 13 and an air outlet 14 which are communicated with the chamber 12 are arranged on the outer wall of the cup 11, and dust-containing working air flows from the air inlet 13 to the air outlet 13 towards the air outlet 14. In this example, the air inlet 13 is located at the upper portion of the cup 11, and the air outlet 14 is located at the lower portion of the cup 11.

A mesh filter 15 is provided at an inner upper portion of the chamber 12. The cleaning member 4 is disposed around the outside of the mesh filter 15, and the cleaning member 4 is reciprocatingly movable up and down along the outer peripheral wall surface of the mesh filter 15 to clean the outer peripheral wall surface of the mesh filter 15. The ash pressing member 6 is located below the cleaning member 4, and the ash pressing member 6 can reciprocate below the mesh filter 15 along with the cleaning member 4 and effect compaction of dust in the lower portion of the chamber 12 toward the inner bottom portion of the chamber 12 during movement.

As shown in fig. 2, the mesh filter 15 includes a first cylindrical wall 151, and a plurality of filter holes 152 are formed in the circumference of the first cylindrical wall 151; a plurality of filter holes 152 are formed in the first cylindrical wall 151 to provide air escape openings from the chamber 12. In other embodiments, the first cylindrical wall may also include a filter screen, the plurality of air escape holes being formed from mesh openings of the filter screen. The first cylindrical wall 151 has an upper end 1511 and a lower end 1512. The inner side of the first cylindrical wall 151 is provided with a second cylindrical wall 17, the axial line X of the second cylindrical wall 17 is coincident with the axial line X of the first cylindrical wall 151, the inner side of the second cylindrical wall 17 is provided with an exhaust channel 16, the exhaust channel 16 can guide the air flow escaping from the filtering holes 152 to the air outlet 14 at the lower part of the cup body 11, and the exhaust channel 16 is provided with a first end 161 and a second end 162; in this example, the first end 161 is at a lower portion, the second end 162 is at an upper portion, and the first end 161 is closer to the air outlet 14 than the second end 162. A lateral partition 18 is provided between the inner wall surface of the first cylindrical wall 151 and the outer wall surface of the second cylindrical wall 17, the lateral partition 18 dividing a space between the inner peripheral wall surface of the first cylindrical wall 151 and the outer peripheral wall surface of the second cylindrical wall 17 into a first inner chamber 153 located at an upper portion and a second inner chamber 154 located at a lower portion, the filter hole 152 is directly communicated with the first inner chamber 153, and the second inner chamber 154 is communicated with the air outlet 14. The exhaust passage 16 is located before the first cavity 153 and the second cavity 154 in terms of the direction of the air flow. Thus, the air flow exiting the plurality of filter holes 152 will first enter the first interior cavity 153, then enter the exhaust passage 16 from the second end 162, then enter the second interior cavity 153 from the first end 161 of the exhaust passage 16, and finally exit the air outlet 14.

The float 3 is a spherical member formed of a lightweight material, which is disposed in the exhaust passage 16. The floating member 3 and the cleaning member 4 are connected together by a plurality of traction ropes 7, and the traction ropes 7 extend into the exhaust passage 16 from the upper portion of the chamber 12. The traction ropes 7 can transmit the movement of the float 3 to the cleaning member 4. The float 3 is able to "flow" in the direction of the first end 161 following the air flow into the exhaust channel 16 when the vacuum motor 2 is activated to provide a suction force. The counterweight 5 is fixed at the lower part of the cleaning member 4, and the counterweight 5 can provide a guiding force for the cleaning member 4 and the ash pressing member 6, so that when the vacuum motor 2 is turned off, the cleaning member 4 and the ash pressing member 6 are guided to move downwards together, and the floating member 3 is pulled to move upwards for resetting by the traction rope 7. In other embodiments, the counterweight may alternatively be omitted, and the cleaning member 4 and the ash pressing member 6 may be increased in weight, so that the vacuum motor 2 can move downward against its own weight after being turned off.

In order to enable the float member 3 to be positioned at the first end 161 during start-up of the vacuum motor 2, the float member 3 is provided with a magnetic attraction member 31; at a support (not shown) of the vacuum motor 2, an electromagnet 8 is provided, the electromagnet 8 being arranged adjacent to a first end 161 of the exhaust channel 16, the electromagnet 8 being configured to generate a magnetic field in response to a start of the vacuum motor 2 and to switch off the magnetic field in response to a switch-off of the vacuum motor 2, the magnetic attraction 31 on the float 3 being capable of being acted upon by the magnetic field. The combination of the electromagnet 8 and the magnetic attraction piece 31 can reduce the random movement of the floating piece 3 caused by the unstable attraction of the vacuum motor 2.

As shown in fig. 3, the ash pressing member 6, the weight member 5 and the cleaning member 4 are formed as an integral part, the ash pressing member 6 is located below the cleaning member 4, and a connecting column 9 is provided between the ash pressing member 6 and the cleaning member 4. The cleaning piece 4 is annular, a first scraping strip 41 is arranged on the inner side end part of the cleaning piece, and a second scraping strip 42 is arranged on the outer side end part of the cleaning piece; when the cleaning member 4 moves up and down along the outer circumferential wall surface of the first cylindrical wall 151, the first wiper 41 will be contactable with the plurality of filter holes 152 to thereby effect removal of soft trash in the vicinity of the plurality of filter holes 152 from the outer circumferential wall surface of the first cylindrical wall 151; the second scraping strip 42 simultaneously rubs against the inner wall surface of the cup 11, thereby removing dust from the inner wall surface of the cup 11. When the cleaning member 4 moves toward the lower end 1512, the ash pressing member 6 is driven by the cleaning member 4 to move downward, so as to compact the garbage at the lower portion of the chamber 12 toward the inner bottom of the chamber 12. The ash pressing member 6 includes a dust blocking edge 61, the dust blocking edge 61 protruding radially outward with respect to an outer peripheral wall surface of the first cylindrical wall 151; referring to fig. 5, the dust lip 61 is configured to prevent dust falling into the lower portion of the chamber 12 from returning to the upper portion of the chamber 12.

The size of the ash pressing member 6, the weight member 5 and the cleaning member 4 in this example are set so as to ensure normal circulation of dust-containing air flow and exhaust air, and the connecting column 9 is as small as possible under the condition of satisfying the strength, so as to reduce shielding of the filter hole 152.

As shown in fig. 4 to 5, when the vacuum motor 2 is started to perform cleaning operation, air and garbage will flow into the chamber 12 from the air inlet 13, enter the first inner cavity 153 from the chamber 12, then enter the air exhaust channel 16 from the second end 162 of the air exhaust channel 16, enter the second inner cavity 153 from the first end 161 of the air exhaust channel 16, and finally flow out from the air outlet 14; a flowing air flow from the air inlet 13 to the air outlet 14 is formed in the dust cup 11; the floating member 3 will move with the air flow towards the second end 162 downwards, and when the floating member 3 moves downwards, it will pull the integral part consisting of the cleaning member 4, the ash pressing member 6 and the weight member 5 to move upwards along the outer circumferential wall of the first cylindrical wall 151, when the floating member 3 moves to a position close to the electromagnet 8, the floating member 3 will be attracted by the electromagnet 8 by the action of the magnetic attraction member 31 in the floating member 3, when the cleaning member 4 moves right to the upper end 1511 of the first cylindrical wall 151; as long as the vacuum motor 2 is always activated, the cleaning member 4, the ash pressing member 6, the weight member 5 and the floating member 3 will always remain in the positions shown in fig. 5, as the vacuum motor 2 continues to suck dust, large-sized garbage will be left in the chamber 12, hard, heavy solid garbage will fall into the lower portion of the chamber 12, soft garbage such as hair, fiber, etc. will partly wrap around the outer circumferential surface of the first cylindrical wall 151 and may clog part of the filter holes 152.

As shown in fig. 6, when the vacuum motor 2 is turned off in the operation of fig. 5, the electromagnet 8 loses the magnetic field generating capability, the floating member 3 loses the magnetic attraction of the electromagnet 8 and the suction force of the vacuum motor, the weight member 5 guides the cleaning member 4 and the ash pressing member 6 downward together, the cleaning member 4 scrapes off soft garbage adhering to the outer peripheral surface of the first cylindrical wall 151 and the filtering holes 152 during the movement, and the garbage falls down and finally falls into the lower portion of the chamber 12; meanwhile, the ash pressing piece 6 can compact the garbage at the lower part of the cavity 12 towards the inner bottom, and the action can effectively prevent the dust from being lifted and scattered everywhere when the cup 11 is used for ash cleaning.

When the vacuum motor 2 is turned on again, the floating member 3 moves again according to the process shown in fig. 4-5 under the action of suction force, the floating member 3 is sucked by the electromagnet 8, the cleaning member 4 and the ash pressing member 6 move upwards along with the floating member 3, and the next time the vacuum motor 2 is turned off, the ash scraping and pressing work is carried out.

Figure 7 shows a dirt cup assembly 10 and a vacuum motor 20 of another preferred embodiment of a vacuum cleaner, the vacuum motor 20 being mounted on the upper part of the dirt cup assembly 10. The air outlet 140 is located at the top of the dirt cup body 110. One end of the traction rope 70 is connected to the cleaning member 40, and the other end is connected to the floating member 30 in the exhaust passage 160. The mesh filter 150 still includes a first cylindrical wall 1510 and a second cylindrical wall 170, and the cleaning member 40 is movable toward the upper end 15110 and the lower end 15120 of the first cylindrical wall 1510. The first end 1610 of the exhaust passage 160 is above and the second end 1620 is below. In this instance, the cleaning member 40 can move in the same direction as the floating member 30 due to the winding design of the traction rope 70.

As shown in fig. 8-9, when vacuum motor 20 is activated, the dusty air flow enters chamber 120 in cup 110 from air inlet 130 and then passes through the filter openings in first cylindrical wall 1510, floating member 30 is moved toward upper first end 1610 by suction, and cleaning member 40 is moved toward upper end 15110 by traction rope 70. When the floating member 30 moves up to be close to the air outlet 140, the cleaning member 40 it pulls moves just to the upper end 15110 of the first cylindrical wall 1510.

As shown in fig. 10, when the vacuum motor 20 is turned off, the floating member 30 loses the suction force, and the cleaning member 40 and the ash pressing member 60 move downward under the guide of the weight member 50, achieving the purpose of scraping and pressing ash. The principle of scraping and pressing ash is the same as that of the above embodiment, and will not be described again.

The dust cup is cleaned by the cleaning piece and the ash pressing piece, particularly the filtering holes in the dust cup are cleaned, no additional operation is needed for a user, the machine can realize one-time cleaning action at the moment of shutdown, and the dust cup is very convenient to use.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, the scope of which is defined in the appended claims, specification and their equivalents.

Claims

1. A vacuum cleaner comprising a dirt cup assembly (1) and a vacuum motor (2), said vacuum motor (2) being configured to be operable to generate a suction force and to shut off said suction force, characterized in that said dirt cup assembly (1) comprises:

the cup body (11), a cavity (12) is defined in the cup body (11), and an air inlet (13) and an air outlet (14) which are communicated with the cavity (12) are formed in the cup body (11);

a mesh filter (15), the mesh filter (15) being disposed within the chamber (12), the mesh filter (15) comprising a first cylindrical wall (151), a plurality of filter holes (152) being formed in the first cylindrical wall (151) to provide air escape from the chamber (12), the first cylindrical wall (151) having an upper end (1511) and a lower end (1512) in an axial direction;

-an exhaust channel (16), said exhaust channel (16) being capable of directing an air flow exiting from said filter aperture (152) to said air outlet (14), said exhaust channel (16) having a first end (161) and a second end (162), said first end (161) being closer to said air outlet (14) than said second end (162);

a float (3), said float (3) being arranged in said exhaust channel (16) and configured to be able to move towards said first end (161) under the action of a suction force when said vacuum motor (2) is activated to generate said suction force;

a cleaning member (4), the cleaning member (4) surrounding an outer peripheral wall surface of the first cylindrical wall (151) and being movable in a direction of the upper end portion (1511) and a direction of the lower end portion (1512) along the outer peripheral wall surface of the first cylindrical wall (151) to effect cleaning of the first cylindrical wall (151);

a counterweight (5), said counterweight (5) being attached to said cleaning element (4) and configured to carry said cleaning element (4) towards said lower end (1512) when said vacuum motor (2) is turned off and loses suction; and

a traction rope (7), wherein one end part of the traction rope (7) is connected with the cleaning piece (4), the other end part of the traction rope is connected with the floating piece (3), and the traction rope (7) is used for transmitting the movement of the floating piece (3) to the cleaning piece (4); the floating piece (3) can drive the cleaning piece (4) to move towards the upper end (1511) through the traction rope (7) when moving towards the first end (161), and the cleaning piece (4) can drive the floating piece (3) to move towards the second end (162) through the traction rope (7) when moving towards the lower end (1512).

2. A vacuum cleaner according to claim 1, wherein the dirt cup assembly (1) further comprises a dirt-pressing member (6), the dirt-pressing member (6) being located below the cleaning member (4); the ash pressing piece (6) and the cleaning piece (4) are fixedly arranged, so that: when the cleaning piece (4) moves towards the lower end (1512), the ash pressing piece (6) is driven by the cleaning piece (4) to move downwards so as to compact garbage at the lower part of the cavity (12) towards the inner bottom of the cavity (12).

3. A vacuum cleaner according to claim 2, characterized in that the dust pressing member (6) is formed as an integral part with the cleaning member (4).

4. A vacuum cleaner according to claim 2, wherein the ash pressing member (6) comprises a dust lip (61) protruding radially outwards with respect to the outer circumferential wall surface of the first cylindrical wall (151), the dust lip (61) being configured to prevent dust falling into the lower part of the chamber (12) from returning to the upper part of the chamber (12).

5. Vacuum cleaner according to claim 1, characterized in that the mesh filter (15) comprises a second cylindrical wall (17) located inside the first cylindrical wall (151), the axis of the second cylindrical wall (17) being parallel or collinear with the axis of the first cylindrical wall (151), the exhaust channel (16) being formed inside the second cylindrical wall (17).

6. Vacuum cleaner according to claim 1, characterized in that the dirt cup assembly (1) is located above the vacuum motor (2), the air outlet (14) being arranged in the lower part of the cup (11).

7. A vacuum cleaner according to claim 1, characterized in that the float (3) is formed from a lightweight material.

8. A vacuum cleaner according to claim 1, characterized in that the float member (3) is spherical.

9. Vacuum cleaner according to claim 1, characterized in that the vacuum cleaner further comprises an electromagnet (8), the electromagnet (8) being arranged adjacent to the first end (161) of the exhaust channel (16), the electromagnet (8) being configured to generate a magnetic field in response to activation of the vacuum motor (2) and to switch off the magnetic field in response to switching off of the vacuum motor (2), the float member (3) being provided with a magnetic attraction member (31) being acted upon by the magnetic field.

10. The vacuum cleaner according to claim 1, wherein the cleaning member (4) is ring-shaped and has a first wiper strip (41) at an inner end portion, the first wiper strip (41) being configured to contact the plurality of filter holes (152) when the cleaning member (4) moves along an outer peripheral wall surface of the first cylindrical wall (151).

11. The vacuum cleaner according to claim 10, wherein the cleaning member has a second wiper strip (42) at an outer end portion, the second wiper strip (42) being configured to contact an inner wall surface of the cup (11) when the cleaning member (4) moves along an outer peripheral wall surface of the first cylindrical wall (151).