CN106308681B

CN106308681B - Gas-dust separation device and dust collector

Info

Publication number: CN106308681B
Application number: CN201611013381.2A
Authority: CN
Inventors: 陆苏忠; 杨曾峥; 周旭; 潘加文
Original assignee: Suzhou Haige Electrical Technology Co ltd
Current assignee: Suzhou Haige Electrical Technology Co ltd
Priority date: 2016-11-15
Filing date: 2016-11-15
Publication date: 2022-04-01
Anticipated expiration: 2036-11-15
Also published as: CN106308681A

Abstract

The invention discloses a gas-dust separating device and a dust collector, comprising: the dust cup comprises an outer cup and an inner cup with a downward opening arranged on the outer cup; the outer cup and the inner cup are respectively and correspondingly provided with a first air inlet and a second air inlet which are communicated; the top of the inner cup is provided with a first air outlet; the gas-dust separator comprises a dust collecting funnel which is positioned at the inner side of the outer cup and is inserted above the inner cup, and the dust collecting funnel is provided with a filter grid hole; the first air inlet, the second air inlet, the first air outlet and the filter grid form an airflow passage; the inner cup is used for carrying out primary separation and storage on the airflow which enters through the second air inlet in a rotating mode; and the filter grid holes are used for carrying out secondary separation on the airflow subjected to the primary separation. The dust collecting cup adopts the inner cup with the downward opening to store dust, the dust collecting pipe and the inner cup are not crossed in storage and cleaning, and the cleaning is convenient; the fine dust separated in the third stage is sent to the dust collecting pipe, so that the space between the outer side of the cyclone pipe and the inner side of the outer cup is not polluted; and the multistage cyclone separation is arranged, so that a better gas-dust separation effect is achieved.

Description

Gas-dust separation device and dust collector

Technical Field

The invention relates to the technical field of household appliances, in particular to a gas-dust separation device and a dust collector.

Background

The dust collector is a small household appliance which drives blades to rotate at a high speed by using a motor, generates air negative pressure in a sealed shell and absorbs dust, the motor of the dust collector rotates at a high speed, air is sucked from an air suction opening, a dust box generates certain vacuum, dust enters a dust filtering bag in the dust box through a ground brush, a connecting pipe, a handle, a hose and a main suction pipe, the dust is left in the dust filtering bag, the filtered air enters the motor through a layer of filter sheet, the layer of filter sheet is a protective barrier for preventing the dust bag from breaking and sucking the dust into the motor, and the filtered air enters the motor and then is discharged into a room again.

Therefore, the filtering structure in the dust box determines the dust collection effect and the air permeability of the dust collector, if the filtering structure in the dust box is too simple and sparse, the air sucked into the dust box returns to the room with a large amount of dust, when the air mixed with the dust passes through the motor, the cooling effect on the motor is limited, the motor is easily blocked and damaged, more seriously, the dust close to the ground surface is mixed with bred bacteria and discharged into the room through the dust collector, the indoor air environment is greatly reduced, the respiratory tract health of people is influenced, and the original intention of the dust collector in cleaning the air is seriously violated; if only in order to strengthen the effect of filtering the dust, but add the filter disc that influences the circulation of air, then along with a large amount of dusts pile up on the filter disc, the dust causes the jam to the filter disc, then can influence the air permeability of dust catcher greatly, leads to the air current to be difficult to circulate outside the dust catcher through the motor, has weakened the drive power of dust absorption on the one hand, and on the other hand has reduced the cooling effect to the motor production, reduces the life-span of accepting of motor.

In the prior art, a cyclone filtering structure and a filtering grid structure are arranged in a dust box, air entering the dust box firstly passes through the cyclone filtering structure, airflow rotates at a high speed, larger granular impurity dust bodies are preferentially thrown out, and a filtering part and a filtering hole for secondary filtering cannot be blocked; moreover, dust falls into the cup bottom, a dust dead zone still exists on the cup bottom, and the inner cup is completely cleaned only after being taken down, so that the cleaning is inconvenient; the airflow enters a plurality of cyclone tubes through the filtering holes, the flow guide holes and the cyclone inlets, and the airflow rotates downwards along the outer wall of the air collecting tube in the cyclone tubes at a high speed to complete secondary cyclone filtration; fine dust carried in the separated airflow can be efficiently filtered in a multi-stage cyclone filtering mode; however, in the process of the airflow rotating downwards along the outer wall of the air collecting pipe at a high speed in the cyclone pipe, the airflow with fine dust enters the cavity between the outer wall of the inner air collecting pipe and the inner side of the outer cup to rotate, so that the inner side of the outer cup and the outer side of the inner cup are easily polluted, and the cleaning is inconvenient because the air collecting pipe, the inner cup, the outer cup and the like need to be disassembled to be cleaned.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the air-dust separating device and the dust collector, wherein the inner cup with the downward opening is arranged in the outer cup to contain large-particle dust which enters the cavity of the inner cup from the second air inlet and is not thrown out, and the inner cup has the dust pressing effect and is convenient to clean; the three-stage separation device conveys the fine dust falling into the cyclone tube to the dust collecting tube after passing through the dust leakage cavity, so that the space between the outer side of the cyclone tube and the inner side of the outer cup is not polluted, and the dust collecting tube and the dust of the inner cup are not crossed during the collection and cleaning; the multistage cyclone separation is arranged, so that a good gas-dust separation effect is achieved.

To achieve these objects and other advantages in accordance with the present invention, the present invention is implemented by the following solutions:

the invention provides a gas-dust separating device, which comprises: the dust cup comprises an outer cup and an inner cup, wherein the outer cup and the inner cup are provided with a cavity, and the inner cup is arranged in the outer cup with an opening facing downwards; the outer cup and the inner cup are respectively and correspondingly provided with a first air inlet and a second air inlet which are communicated; a first air outlet is formed in the position, close to the top, of the inner cup; the gas-dust separator comprises a dust collecting funnel, and the dust collecting funnel is positioned on the inner side of the outer cup and is hermetically inserted above the inner cup; the dust collecting funnel is provided with a filtering grid hole; the first air inlet, the second air inlet, the first air outlet and the filter grid form an airflow passage; the inner cup is used for carrying out primary separation on dust in the airflow which enters through the second air inlet in a rotating mode and accommodating the dust; and the filtering grid holes are used for carrying out secondary separation on dust in the airflow after the primary separation of the inner cup.

Preferably, the gas-dust separator further comprises a third-stage separation device for carrying out third-stage separation on dust in the airflow subjected to second-stage separation by the filter grid holes, and the third-stage separation device comprises a gas-dust separation plate, an air deflector and a cyclone plate which are coaxially sealed above the dust collection funnel in sequence; the air flow after the secondary separation passes through the air-dust separation plate to reach the air deflector and is guided into the cyclone plate by the air deflector to carry out the tertiary separation of air and dust; and the dust body after the three-stage separation falls below the cyclone plate and enters a cavity formed between the gas-dust separation plate and the dust collection funnel.

Preferably, the gas-dust separating plate comprises a wind guide hole, a dust leakage cavity and a wind guide cavity, wherein the dust leakage cavity and the wind guide cavity respectively extend downwards; the cyclone plate is provided with cyclone tubes extending downwards, a cyclone inlet hole is formed in the side edge of each cyclone tube, and a cyclone outlet hole is formed below each cyclone tube; the air guide plate is provided with a first air guide pipe and a second air guide pipe, wherein the axis of the first air guide pipe extends downwards and is inserted into the air guide hole; the second air guide pipe guides the airflow conveyed by the first air guide pipe into the cyclone pipe through the cyclone inlet hole; the filter grid hole, the air guide cavity, the air guide hole, the first air guide pipe and the second air guide pipe form an air guide airflow passage; the cyclone tube, the dust leakage hole and the dust leakage cavity form a dust leakage passage.

Preferably, two cyclone inlet holes are formed in the side edge of each cyclone tube; the air inlet direction of the cyclone inlet holes is tangent to the upper edge of the cyclone pipe, and the air inlet rotating directions of the two cyclone inlet holes are the same.

Preferably, the gas-dust separator further comprises an air collecting plate, and the air collecting plate is provided with an air collecting pipe extending downwards; the wind collecting pipe is inserted above the cyclone pipe in a sealing manner, and a sealing cavity is formed between the wind collecting plate and the cyclone plate.

Preferably, the inner side surface of the dust collecting funnel is of a conical surface structure with a wide upper part and a narrow lower part, and the center of the dust collecting funnel is provided with a dust collecting pipe extending downwards; the dust collecting pipe is inserted into the inner cup in a sealing manner and extends out of the inner cup to the bottom of the outer cup; the dust collecting pipe is coaxial with the inner cup.

Preferably, still include the dust collection funnel with the latch device of interior cup sealed grafting, it includes: a first projection at the connection of the dust collecting funnel and the dust collecting pipe; a second projection on the dust collecting pipe; the clamping groove is vertically arranged on the inner side of the opening of the inner cup for insertion; wherein, one surface of the first lug towards the outer side of the dust collecting funnel is provided with an arc shape matched with the splicing part of the top of the inner cup; the second bump is inserted into the clamping groove and abuts against the bottom of the clamping groove.

Preferably, the number of the air guide cavities is several, and the several air guide cavities are annularly arranged around the air guide hole; the dust leakage holes, the dust leakage cavity, the cyclone tube and the second air guide tubes are a plurality of holes which are matched in position and correspond to each other and are the same in number; the plurality of dust leakage holes are annularly arranged around the air guide hole.

Preferably, the cyclone tube is a hollow taper tube which is vertical to one side of the first air guide tube, and the diameter of the upper end of the cyclone tube is larger than that of the lower end of the cyclone tube; the air collecting pipe is a hollow taper pipe which is vertical to one side of the first air guide pipe, and the diameter of the upper end of the air collecting pipe is larger than that of the lower end of the air collecting pipe; the length of the wind collecting pipe is less than that of the cyclone pipe.

The invention also provides a dust collector which comprises the air-dust separation device.

The invention at least comprises the following beneficial effects:

1) according to the gas-dust separation device provided by the invention, airflow enters the inner cup through the first air inlet of the outer cup and the second air inlet close to the bottom of the inner cup and then rotates, large-particle coarse dust falls into the cavity of the inner cup due to gravity in the rotating process, fine dust upwards rotates along the cup wall of the inner cup under the action of centrifugal force to be thrown out of the first air outlet of the inner cup, and primary separation of dust in the airflow is realized; the opening of the inner cup is downward arranged in the outer cup, so that a certain ash pressing effect is realized on large-particle coarse dust, the coarse dust is prevented from entering the next stage again under the action of centrifugal force, and the separation efficiency is reduced; the inner cup with the downward opening has no dust dead zone, and the inner cup can be washed by water;

2) the dust collecting funnel is positioned at the inner side of the outer cup and is hermetically inserted above the inner cup; the dust collecting funnel is provided with a filter grid hole, and the filter grid hole is used for carrying out secondary separation and storage on dust in the airflow after the primary separation;

3) airflow after secondary separation of the filter grid holes sequentially enters a cyclone pipe through an air guide airflow passage formed by an air guide cavity, an air guide hole, a first air guide pipe and a second air guide pipe to be subjected to tertiary separation, the air is thrown out from the upper part of the cyclone pipe, fine dust falls into the cyclone pipe, and dust enters a dust collecting pipe of a dust collecting funnel through the cyclone pipe, a dust leakage hole and a dust leakage cavity, so that the classified storage and the separation effects of the fine dust, coarse dust and large particles are realized, the fine dust in the dust collecting pipe is less, the cleaning frequency is reduced, and the cleaning is simple;

4) two cyclone inlet holes are formed in the side edge of each cyclone tube; the air inlet direction of the cyclone inlet holes is tangent to the upper edges of the cyclone pipes, and the air inlet rotating directions of the two cyclone inlet holes are the same, namely, the airflow in one second air guide pipe enters the two adjacent cyclone pipes from the two adjacent cyclone inlets respectively, and the airflow in one cyclone pipe comes from the two adjacent second air guide pipes, so that the airflow separation speed is improved;

5) the wind collecting plate comprises a wind collecting pipe extending downwards; the wind collecting pipe is inserted into the cyclone pipe in a sealing way, a sealing cavity is formed between the wind collecting plate and the cyclone plate, and the airflow separated in the cyclone pipe is discharged after being collected by the wind collecting pipe of the wind collecting plate;

6) the inner side surface of the dust collecting funnel is of a conical surface structure with a wide upper part and a narrow lower part, and the center of the dust collecting funnel is provided with a dust collecting pipe extending downwards; the dust collecting pipe is coaxial with the inner cup, is inserted into the inner cup in a sealing way and extends out of the inner cup to the bottom of the outer cup; avoid the disturbance of the air current caused by the external air current entering the dust collecting pipe from the bottom of the dust collecting pipe.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic cross-sectional view of a gas-dust separating apparatus according to the present invention;

fig. 2(a) to 2(b) are schematic structural views of the inner cup according to the present invention;

fig. 3(a) to 3(b) are schematic structural views of a dust collecting funnel according to the present invention;

FIGS. 4(a) to 4(b) are schematic structural views of a gas-dust separation plate according to the present invention;

fig. 5(a) to 5(b) are schematic structural views of the air deflector according to the present invention;

FIG. 6 is a schematic view of the cyclone plate according to the present invention;

FIG. 7 is a schematic structural view of the wind-collecting plate according to the present invention;

FIG. 8 is a schematic view illustrating an assembly of a cyclone plate and a wind deflector according to the present invention;

FIG. 9 is an assembly view of the integrated funnel, the air-dust separating plate, the air deflector and the cyclone plate according to the present invention;

FIG. 10 is an exploded view of the assembly of the wind deflector, the cyclone plate and the wind-collecting plate according to the present invention;

FIG. 11 is an exploded view of the inner cup, integrated funnel, air-dust separating plate, air deflector, and cyclone plate of the present invention;

FIG. 12 is a schematic view of the assembly of the gas-dust separating apparatus according to the present invention with the outer cup partially peeled;

in the figure:

10-a dust cup;

11-outer cup; 111-a first air inlet; 112-upper cover; 113-a second air outlet; 114-an air valve;

12-inner cup; 121-a second air inlet; 122-a first outlet; 123-card slot;

20-a gas-dust separator;

21-a dust collecting funnel;

211-filtration pores; 212-a dust collection tube; 213-first bump; 214-second bump;

215-a first sealing ring;

22-gas dust separation plate;

221-air guide holes; 222-dust leakage holes; 223-a dust leakage cavity; 224-a wind guiding cavity;

23-a cyclone plate;

231-a cyclone tube; 232-cyclone inlet hole; 233-cyclone outlet; 234-reinforcing ribs;

24-a wind deflector;

241-a first air duct; 242-a second air duct;

25-a wind-collecting plate; 251-an air collecting pipe; 252-a second seal ring;

26-filter cotton.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

Example 1

As shown in fig. 1, fig. 2(a), fig. 2(b), fig. 3(a), and fig. 3(b), an embodiment of the present invention provides a gas-dust separating apparatus, including: a dirt cup 10 and a gas-dust separator 20. The dirt cup 10 includes an outer cup 11 and an inner cup 12 having a cavity. The inner cup 12 is arranged in the outer cup 11 with an opening facing downwards; the outer cup 11 and the inner cup 12 are respectively and correspondingly provided with a first air inlet 111 and a second air inlet 121 which are communicated; a first air outlet 122 is formed at the position, close to the top, of the inner cup 12; the gas-dust separator 20 comprises a dust collecting funnel 21, the dust collecting funnel 21 is positioned at the inner side of the outer cup 11 and is hermetically inserted above the inner cup 12; the dust collecting funnel 21 is provided with a filtering grid hole 211; wherein, the first air inlet 111, the second air inlet 121, the first air outlet 122 and the filter grid holes 211 form an airflow path; the inner cup 12 is used for performing primary separation and containing on dust in the airflow entering through the second air inlet 121 in a rotating manner; the filtering grid holes 211 are used for secondary separation of dust in the airflow after primary separation of the inner cup 12.

In the above embodiment, the first-stage separation and the second-stage separation are performed by: the dust collecting funnel 21 is positioned on the inner side of the outer cup 11 in a funnel shape and is inserted above the inner cup 12 in a sealing manner, therefore, a sealing cavity which takes the communicated first air inlet 111 and second air inlet 121 as inlets and takes the filtering grid hole 211 as an outlet is formed on the inner side of the outer cup 11, the outer side of the inner cup 12 and the lower part of the filtering grid hole 211 of the dust collecting funnel 21, then under the action of an external air suction power device, airflow enters the cavity of the inner cup 12 from the communicated first air inlet 111 and second air inlet 121, and because the inner cup 12 is arranged on the inner side of the outer cup 11 with an opening facing downwards, the top of the inner cup has a certain pressing effect on large-particle dust in the airflow rotating at a high speed, and the large-particle dust is prevented from entering the next stage again under the action of centrifugal force to influence the separation efficiency; under the cooperation of gravity, large-particle dust falls into the cavity of the inner cup 12 to complete the primary separation. The coarse dust after the first-stage separation enters the cavities at the outer side of the inner cup 12, below the filter grid holes 211 and at the inner side of the outer cup 11 through the first air outlet 122, and the airflow with the coarse dust flows out through the filter grid holes 211 through high-speed rotation to complete the second-stage separation of the filter grid holes 211. The primary separation of the inner cup 12 avoids the blockage of large-particle dust on the filter gate holes 211; the secondary separation of the screen holes 211 further filters a portion of the coarse dust in the airstream. Therefore, the inner cup 12 is arranged with the opening facing downwards, and has a certain ash pressing effect relative to the arrangement with the common opening facing downwards; dust is contained in the cavity below the inner cup 12, no dust dead zone exists, and the cleaning is convenient; and, the setting of primary separation and second grade separation, the dust to equidimension not is categorised the separation and is accomodate, the categorised clearance of cup 12 and dust collection funnel 21 in the later stage of being convenient for. Preferably, the filtering grid holes 211 are vertical bars, and a plurality of filtering grid holes 211 are uniformly arranged around the dust collecting funnel 21, so that the airflow coming out of the first air outlet 122 can be dispersed and filtered through each filtering grid hole 211 under high-speed rotation, and the filtering efficiency is improved.

As another embodiment of the present invention, the gas-dust separator 20 further includes a third-stage separation device for performing a third-stage separation on the dust in the airflow after the second-stage separation through the filtering grid holes 211, and the third-stage separation device includes a gas-dust separation plate 22, an air deflector 24 and a cyclone plate 23 coaxially sealed above the dust collection funnel 21 in sequence; the airflow after the secondary separation passes through the air-dust separation plate 22 to reach the air deflector 24, and is guided into the cyclone plate 23 by the air deflector 24 to carry out the tertiary separation of air-dust; the dust separated in the third stage falls below the cyclone plate 23 and enters the cavity formed between the air-dust separating plate 22 and the dust collecting funnel 21. In this embodiment, since the air deflector 24 and the cyclone plate 23 are both located above the dust collecting funnel 21, the high-speed rotational airflow after the second-stage separation enters the air deflector 24 above the dust collecting funnel 21 and is guided by the air deflector 24 into the cyclone plate 23 for the third-stage separation of air and dust, and the air deflector 24 plays a guiding role. Because the dust collecting funnel 21, the air-dust separating plate 22, the air deflector 24 and the cyclone plate 23 are coaxially sealed, in the process that the airflow after the secondary separation passes through the air-dust separating plate 22 to reach the air deflector 24, and the airflow is guided into the cyclone plate 23 by the air deflector 24 to carry out the tertiary separation of air and dust, and the dust body after the tertiary separation falls below the cyclone plate 23 and enters the cavity formed between the air-dust separating plate 22 and the dust collecting funnel 21, the dust body in the airflow always runs in the inner parts of the dust collecting funnel 21, the air-dust separating plate 22, the air deflector 24 and the cyclone plate 23 and finally is contained in the cavity formed between the air-dust separating plate 22 and the dust collecting funnel 21 and does not enter the cavity between the outer parts of the dust collecting funnel 21, the air-dust separating plate 22, the air deflector 24 and the cyclone plate 23 and the inner wall of the outer cup 11, therefore, the cleaning only needs to wash the inner parts of the dust collecting funnel 21, the air-dust separating plate 22, the air deflector 24 and the cyclone plate 23, the dust collection funnel 21, the air-dust separation plate 22, the air deflector 24, and the cavity between the outer portion of the cyclone plate 23 and the inner wall of the outer cup 11 are clean. The three-stage separation provided by the embodiment further separates fine dust in the airflow after the two-stage separation, and improves the effect of gas-dust separation.

As one embodiment of the above, the three-stage separation device includes: the air-dust separating plate 22, as shown in fig. 4(a) to 4(b), includes an air guiding hole 221, a dust leaking hole 222, and a dust leaking cavity 223 and an air guiding cavity 224 respectively extending downward; the air guide hole 221 is positioned at the axle center of the air-dust separating plate 22; the cyclone plate 23, as shown in fig. 6, has cyclone tubes 231 extending downward, a cyclone inlet hole 232 is formed at a side of each cyclone tube 231, and a cyclone outlet hole 233 is formed below; the air guide plate 24, as shown in fig. 5(a) to 5(b), has a first air guide pipe 241 with an axial center extending downward and inserted into the air guide hole 221, and a second air guide pipe 242 located above the first air guide pipe 241; the second air guiding pipe 242 guides the airflow conveyed by the first air guiding pipe 241 into the cyclone pipe 231 through the cyclone inlet 232; wherein the filtering grid hole 211, the air guiding cavity 224, the air guiding hole 221, the first air guiding pipe 241 and the second air guiding pipe 242 form an air guiding airflow passage; the cyclone tube 231, the dust leakage hole 222, and the dust leakage chamber 223 form a dust leakage path. Fig. 11 shows an exploded view of the assembly of the inner cup 12, the integrated funnel 21, the gas-dust separating plate 22, the air deflector 24 and the cyclone plate 22.

In the above embodiment, the air deflector 24 is matched and sealed to be inserted into the cyclone plate 23 from below the cyclone plate 23, and the sealed insertion is required to meet the requirement that the airflow in the second air duct 242 can enter the cyclone tube 231 through the cyclone inlet 232 to perform three-stage separation under the condition of high-speed rotation. The hermetically inserted cyclone plate 23 and the air deflector 24 are further hermetically inserted into the air guiding hole 221 of the air-dust separating plate 22 through the first air guiding pipe 241 of the air deflector 24. FIG. 8 is a schematic view of the assembly of the cyclone plate 23 and the air deflector 24; fig. 9 is an assembly view of the integrated hopper 21, the air-dust separating plate 22, the air deflector 24 and the cyclone plate 23. The three-stage separation process of the three-stage separation device is as follows: the airflow after the second-stage separation sequentially passes through an air guide airflow passage formed by the air guide cavity 224, the air guide hole 221, the first air guide pipe 241 and the second air guide pipe 242 and enters the cyclone pipe 231 through the cyclone inlet hole 232 to perform third-stage separation: the gas is thrown out from the upper part of the cyclone tube 231, and fine dust falls into the cyclone tube 231; the fine dust enters the dust collection funnel 21 through the cyclone tube 231, the dust leakage hole 222 and the dust leakage chamber 223 under the action of high-speed rotation and gravity to be collected. In this embodiment, fine dust enters the dust collection funnel 21 through the cyclone tube 231, the dust leakage hole 222 and the dust leakage chamber 223, so that the fine dust does not enter the sealed space above the dust collection funnel 21, below the cyclone plate 23 and between the outer cups 11, which facilitates the later cleaning; the multi-stage cyclone separation mode formed by the first-stage separation, the second-stage separation and the third-stage separation improves the efficiency of gas-dust separation.

As a preferable example of the above embodiment, as shown in fig. 6, two cyclone inlet holes 232 are formed at a side of each cyclone tube 231; the air inlet direction of the cyclone inlet 232 is tangent to the upper edge of the cyclone tube 231, and the air inlet rotating directions of the two cyclone inlets are the same. More specifically, one of the two cyclone inlet holes 232 is close to the edge of the cyclone plate 23, and the other is close to the center of the cyclone plate 23, and the two cyclone inlet holes 232 are separated by 180 degrees. The two cyclone inlet holes 232 and their positions are arranged to ensure the air inlet speed of the cyclone pipe 231. Arrows in fig. 6 are used to indicate the direction of the airflow from one cyclone tube 231 to two adjacent cyclone inlet holes 232.

As another embodiment of the present invention, as shown in fig. 7, the air-dust separator 20 further includes an air collecting plate 25, and the air collecting plate 25 is provided with an air collecting pipe 251 extending downward; the wind collecting pipe 251 is inserted above the cyclone pipe 231 in a sealing way, and a sealing cavity is formed between the wind collecting plate 25 and the cyclone plate 23. The airflow after the third-stage separation is collected into the air collecting pipe 251 through the matching of the air collecting pipe 251 and the upper part of the cyclone pipe 231. Fig. 10 shows an exploded view of the assembly of the air deflector 24, the cyclone plate 23 and the wind-collecting plate 25.

As another embodiment of the present invention, as shown in fig. 1, the gas-dust separator 20 further includes a filter cotton 26, and the filter cotton 26 is disposed above the wind-collecting plate 25. The filter cotton 26 is used for carrying out four-stage separation and filtration on the airflow collected by the air collecting pipe 251, and the efficiency of air-dust separation is further improved.

As a preferred embodiment of the present invention, as shown in fig. 3(a) and 3(b), the inner side surface of the dust collection funnel 21 has a tapered structure with a wide top and a narrow bottom, and the dust collection funnel 21 has a dust collection pipe 212 extending downward at the center; the dust collecting pipe 212 is hermetically inserted into the inner cup 12 and extends out of the inner cup 12 to the bottom of the outer cup 11; the dust collection tube 212 is coaxial with the inner cup 12. In this embodiment, the tapered structure with a wide top and a narrow bottom facilitates the airflow from the first air outlet 122 to be dispersed and filtered through the plurality of filter grid holes 211 uniformly arranged around the dust collecting funnel 21 under high-speed rotation, thereby improving the filtering efficiency; meanwhile, the tapered structure with a wide top and a narrow bottom facilitates fine dust to be collected in the dust collecting tube 212 after reaching the dust collecting funnel 21 through the cyclone tube 231, the dust leakage hole 222 and the dust leakage cavity 223. A plurality of filter grid holes 211 which are uniformly arranged around the dust collecting funnel 21 are coaxial with the dust collecting funnel 21, and a dust collecting pipe 212 is coaxial with the inner cup 12; the barrier-free high-speed mute rotation of the airflow is facilitated. The dust collecting pipe 212 is hermetically inserted into the inner cup 12 and extends out of the inner cup 12 to the bottom of the outer cup 11, so that fine dust in the dust collecting pipe 212 is prevented from entering the cavity of the inner cup 12 to be continuously separated under the driving of high-speed airflow in the inner cup 12.

As shown in fig. 2(b), 3(a) and 3(b), the gas-dust separating device further includes a latch device for sealingly engaging the dust collecting funnel 21 with the inner cup 12, and the latch device includes: a first projection 213 at the connection of the dust collection funnel 21 and the dust collection pipe 212; a second projection 214 on the dust collection pipe; the clamping groove 123 is vertically arranged on the inner side of the opening of the inner cup 12 for insertion; wherein, one surface of the first bump 213 facing the outer side of the dust collecting funnel 21 is provided with an arc shape matched with the splicing part of the top of the inner cup 12; the second protrusion 214 is inserted into the slot 123 and abuts against the bottom of the slot 123. In this embodiment, the dust collecting funnel 21 is inserted into the inner cup 12 through the opening of the inner cup 12, the second protrusion 214 slides in the slot 123 until the second protrusion 214 abuts against the bottom of the slot 123, and at the same time, the surface of the first protrusion 213 facing the outer side of the dust collecting funnel 21 abuts against the top of the inner cup 12. The clamping device provides possibility for the sealed insertion between the dust collecting funnel 21 and the inner cup, avoids the cross and the messy air flow among the cavity formed below the dust collecting funnel 21, above the inner cup 12 and the inner side of the outer cup 11, the cavity of the inner cup 12 and the cavity in the dust collecting pipe 212, and is also beneficial to improving the efficiency of air-dust separation. Preferably, the second protrusion 214 is a structure that is wide at the bottom and narrow at the top along the plugging direction, and the corresponding slot 123 is a groove-shaped structure that is matched with the slot. The structure with a wide top and a narrow bottom facilitates the downward insertion of the second protrusion 214 into the slot 123. The second bump 214 may be an inverted triangle or an inverted right-angled trapezoid, and fig. 9 shows an example in which the second bump 214 is an inverted triangle.

As a preferred embodiment of the present invention, the number of the air guiding cavities 224 is several, and the several air guiding cavities 224 are annularly arranged around the air guiding hole 221; the dust leakage holes 222, the dust leakage cavities 223, the cyclone tubes 231 and the second air guide tubes 242 are a plurality of holes which are matched in position and correspond to each other and have the same number; a plurality of dust leakage holes 222 are annularly arranged around the air guide hole 221. In this embodiment, the airflow thrown out by the first air outlet 122 is dispersed and filtered by the plurality of filtering grid holes 211 under high-speed rotation, and then enters the plurality of air guide cavities 224 and is collected into the air guide holes 221 located at the axis of the air-dust separating plate 22; then enters the first air guide pipe 241 of the air guide plate 24 through the air guide hole 221 and is dispersed to a plurality of second air guide pipes 242; the airflow of the air guide duct 242 passes through the cyclone inlet 232 and the cyclone tubes 231 by negative pressure and high-speed rotation, the cyclone tubes 231 perform three-stage separation at the same time, and the separated fine dust enters the corresponding dust leakage holes 222 and the dust leakage cavities 223 through the cyclone tubes 231 respectively and then is collected in the dust collection tube 212 of the dust collection funnel 21, so that the efficiency of gas-dust separation is improved.

As a preferred embodiment of the present invention, as shown in fig. 6, 7, 8 and 10, the cyclone tube 231 is a hollow conical tube which is vertical to one side of the first wind guide tube 241, and the upper end diameter of the cyclone tube 231 is larger than the lower end diameter; the air collecting pipe 251 is a hollow taper pipe which is vertical to one side of the first air guide pipe 241, and the diameter of the upper end of the air collecting pipe 251 is larger than that of the lower end; the length of the wind collecting pipe 251 is shorter than that of the cyclone tube. The shape and size of the wind collecting pipe 251 are matched and sealed to be plugged into the cyclone pipe 231. The wind collecting pipe 251 is preferably coaxial with the cyclone pipe 231. The cyclone tube 231 and the air collecting tube 251 of the hollow conical tube are coaxial, which is beneficial to the separation of air and dust, and the separated dust body can drop into the dust collecting tube 212 of the dust collecting funnel 21 through the cyclone tube 231 in a state of high-speed downward rotation. Preferably, the cyclone 231 and the air collecting pipe 251 are respectively of a structure with an upper circumferential surface and a lower inverted conical surface which are matched, so that air-dust separation can be better realized. In a preferred embodiment, a vertical rib 234 is provided at a side of the cyclone 231 that is not a vertical side. The reinforcing ribs 234 are erected vertically on the air-dust separating plate 22 for supporting the cyclone plate 23.

In another embodiment of the present invention, the outer cup 11, the dust collecting funnel 21, the air-dust separating plate 22, the cyclone plate 23, the wind deflector 24, the wind collecting plate 25 and the filter cotton 26 are all hermetically mounted. The method specifically comprises the following steps: the dust collecting funnel 21 and the gas-dust separating plate 22 are fixed and installed firstly, and the fixing and installing mode includes but is not limited to adopting screw fixation; the edge of the fixedly installed dust collecting funnel 21 is hermetically connected with the edge of the gas-dust separating plate 22 through a first sealing ring 215; the sealing ring 215 is attached to the inner side wall of the outer cup 11. The air deflector 24, the cyclone plate 23 and the wind collecting plate 25 are fixedly mounted firstly, and the fixed mounting mode includes but is not limited to screw fixation; after the fixed installation, the edge of the air deflector 24, the edge of the cyclone plate 23, the edge of the wind collecting plate 25 and the edge of the filter cotton 26 are hermetically connected through a second sealing ring 252; the second sealing ring 252 is attached to the inner side wall of the outer cup 11, as shown in figures 1 and 12,

the gas-dust separation device provided by the embodiment of the invention has the advantages that the dust with different sizes in the airflow is classified and separated through the one-stage to four-stage multistage rotary separation, and the gas-dust separation effect is good. The inner cup 12 is provided with a downward opening, dust is contained, no dust dead zone exists, and cleaning is convenient. In the process that the airflow after the secondary separation is separated by the tertiary separation device, dust in the airflow is separated from the air-dust separation plate 22 and the air deflector 24 to the cyclone tube 231 of the cyclone plate 23, then falls off through the cyclone tube 231, and enters the dust collection tube 212 of the dust collection funnel 21 through the dust leakage hole 222 and the dust leakage cavity 223 in sequence, and cavities formed above the air-dust separation plate 22, outside the cyclone plate 23, outside the air deflector 24, below the air collection plate 25 and inside the outer cup 11 are clean cavities without being cleaned. When the cup is cleaned, the outer cup 11 is opened, large-particle dust in the cavity of the inner cup 12 can be conveniently led out, and the inner cup 12 is directly washed by water; the dust collecting funnel 21 is not required to be detached from the inner cup 12, and the filtering grid holes 211 and coarse dust falling outside the inner cup 12 can be directly washed; the dust collecting pipe 212 contains small-sized fine dust, so that the dust can be directly washed by water without frequent washing, thereby reducing the frequency of cleaning.

Example 2

On the basis of embodiment 1, the present embodiment provides a vacuum cleaner including the air-dust separating apparatus described in embodiment 1. The dust collector is provided with a motor and a shell thereof, a gas-dust separating device and a mop. Wherein, the motor shell is internally provided with an air exhaust power device, and the motor shell is provided with a gas inlet and a gas outlet; an upper cover 112 which is arranged above the wind collecting plate 25 and the filter cotton 26 in a sealing way is arranged above the outer cup 11, and a second air outlet 113 is arranged on the upper cover 112. Then, the second air outlet 113 of the upper cover 112 is communicated with the air inlet of the motor shell; the ground brush is communicated with a first air inlet 111 of the outer cup 11 of the air-dust separating device through a connecting piece.

The using process of the dust collector is as follows: the air-extracting power device is connected with a power supply, the floor brush is held by hand, the air-extracting power device rotates at a high speed, so that a low-pressure environment is formed in the floor brush and the air-dust separating device, air flow on the indoor floor is sucked into the air-dust separating device through the floor brush, larger dust bodies are adsorbed on the floor brush, and primary air-dust separation is realized. The air flow enters the inner cup 12 from the first air inlet 11 and the second air inlet 121 which are communicated to rotate so as to carry out primary separation; the airflow passes through the filtering grid holes 211 of the dust collecting funnel 21 to realize secondary separation, and the airflow passes through the air guide cavity 224, the air guide hole 221, the first air guide pipe 241 and the second air guide pipe 242 in sequence to reach the cyclone pipe 231 to realize tertiary separation. The gas after the third-stage separation enters the wind collecting pipe 251 from the cyclone pipe 231 for collection at high speed, after the fourth-stage separation of the filter cotton 26, the clean air is thrown out from the second air outlet 113 of the upper cover 112 and enters the motor housing, flows through the motor to cool the motor, and is finally discharged from the gas outlet of the motor housing and returns to the outside again.

In the above embodiment, in order to avoid the blockage of the air-dust separating device and the failure of the air flow to be thrown out of the second air outlet 113 to cool the motor under the condition that the air-extracting power device rotates at a high speed, the motor may be damaged due to excessive heating, and the service life of the motor is reduced. Therefore, an air valve 114 is arranged in the upper cover 112, the air valve is provided with a through hole communicated with the second air outlet 113, when the air-dust separating device is blocked, the pressure of the upper cover 112 is reduced to a certain degree, the air valve 14 is opened, the through hole is communicated with the second air outlet 113, outside air enters the upper cover 112 through the through hole and then enters the motor through the second air outlet 113 to cool the motor.

The dust collector provided by the embodiment of the invention adopts the air-dust separation device as in the embodiment 1, the multi-stage cyclone separation is realized, the air-dust separation effect is good, the cleaning work of the dust collector is simple, and the dust collector is suitable for popularization and use.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.

Claims

1. A gas-dust separating apparatus, comprising:

a dirt cup (10) comprising an outer cup (11) having a cavity and an inner cup (12), the inner cup (12) being disposed in the outer cup (11) with an opening facing downward; the outer cup (11) and the inner cup (12) are respectively and correspondingly provided with a first air inlet (111) and a second air inlet (121) which are communicated with each other; a first air outlet (122) is formed in the position, close to the top, of the inner cup (12);

a gas-dust separator (20) comprising a dust collecting funnel (21), said dust collecting funnel (21) being located inside said outer cup (11) and sealingly plugged above said inner cup (12); the dust collecting funnel (21) is provided with a filtering grid hole (211);

wherein the first air inlet (111), the second air inlet (121), the first air outlet (122) and the filter grid holes (211) form an air flow path;

the inner cup (12) is used for carrying out primary separation on dust in the airflow which enters through the second air inlet (121) in a rotating mode and containing the dust; the filter grid holes (211) are used for carrying out secondary separation on dust in the airflow after primary separation by the inner cup (12);

the gas-dust separator (20) also comprises a three-stage separation device for carrying out three-stage separation on dust bodies in the airflow subjected to the two-stage separation by the filter grid holes (211), and the three-stage separation device comprises a gas-dust separation plate (22), an air deflector (24) and a cyclone plate (23) which are coaxially sealed above the dust collection hopper (21) in sequence;

the air flow after the secondary separation passes through the air-dust separation plate (22) to reach the air deflector (24), and is guided into the cyclone plate (23) by the air deflector (24) to carry out the tertiary separation of air and dust; the dust body after the three-stage separation falls below the cyclone plate (23) and enters a cavity formed between the gas-dust separation plate (22) and the dust collection funnel (21);

the gas-dust separating plate (22) comprises a wind guide hole (221), a dust leakage hole (222), a dust leakage cavity (223) and a wind guide cavity (224), wherein the dust leakage cavity and the wind guide cavity respectively extend downwards;

the cyclone plate (23) is provided with cyclone tubes (231) extending downwards, a cyclone inlet hole (232) is formed in the side edge of each cyclone tube (231), and a cyclone outlet hole (233) is formed below each cyclone tube (231);

the air deflector (24) is provided with a first air guide pipe (241) with the axis extending downwards and inserted into the air guide hole (221) and a second air guide pipe (242) positioned above the first air guide pipe (241); the second air guide pipe (242) guides the airflow conveyed by the first air guide pipe (241) into the cyclone pipe (231) through the cyclone inlet hole (232);

the filter grid hole (211), the air guide cavity (224), the air guide hole (221), the first air guide pipe (241) and the second air guide pipe (242) form an air guide airflow channel;

the cyclone tube (231), the dust leakage hole (222) and the dust leakage chamber (223) form a dust leakage path.

2. A gas-dust separating apparatus according to claim 1, wherein the cyclone tube (231) has two cyclone inlet holes (232) formed at its side; the air inlet direction of the cyclone inlet holes (232) is tangent to the upper edge of the cyclone tube (231), and the air inlet rotating directions of the two cyclone inlet holes (232) are the same.

3. A gas-dust separating device according to claim 1, characterized in that the gas-dust separator (20) further comprises a wind-collecting plate (25), the wind-collecting plate (25) being provided with a wind-collecting pipe (251) projecting downwards; the wind collecting pipe (251) is hermetically inserted above the cyclone pipe (231), and a sealed cavity is formed between the wind collecting plate (25) and the cyclone plate (23).

4. A gas-dust separating device according to any one of claims 1-3, characterized in that the inner side of the dust collecting funnel (21) is a conical structure with a wide top and a narrow bottom, and the dust collecting funnel (21) has a dust collecting pipe (212) extending downwards in the center; the dust collecting pipe (212) is hermetically inserted into the inner cup (12) and extends out of the inner cup (12) to the bottom of the outer cup (11); the dust collecting pipe (212) is coaxial with the inner cup (12).

5. A gas-dust separating device according to claim 4, further comprising a snap-in device for sealingly engaging the dust collecting funnel (21) with the inner cup (12), comprising:

a first projection (213) at a connection of the dust collection funnel (21) and the dust collection pipe (212);

a second projection (214) on the dust collection tube (212); and the number of the first and second groups,

the clamping groove (123) is vertically arranged on the inner side of the opening of the inner cup (12) for insertion;

wherein, one surface of the first lug (213) facing the outer side of the dust collecting funnel (21) is provided with an arc shape matched with the splicing part of the top of the inner cup (12);

the second bump (214) is inserted into the clamping groove (123) and abuts against the bottom of the clamping groove (123).

6. Gas-dust separating device according to claim 3,

the number of the air guide cavities (224) is several, and the several air guide cavities (224) are annularly arranged around the air guide hole (221);

the dust leakage holes (222), the dust leakage cavity (223), the cyclone tube (231) and the second air guide tube (242) are a plurality of holes which are matched in position and correspond to each other and are the same in number;

the plurality of dust leakage holes (222) are annularly arranged around the air guide hole (221).

7. Gas-dust separating device according to claim 3,

the cyclone pipe (231) is a hollow taper pipe which is vertical to one side of the first air guide pipe (241), and the diameter of the upper end of the cyclone pipe (231) is larger than that of the lower end;

the air collecting pipe (251) is a hollow taper pipe which is vertical to one side of the first air guide pipe (241), and the diameter of the upper end of the air collecting pipe (251) is larger than that of the lower end; the length of the wind collecting pipe (251) is less than that of the cyclone pipe (231).

8. A vacuum cleaner, comprising a gas-dust separating apparatus as claimed in any one of claims 1 to 7.