CN100367900C - Two-stage vacuum cleaner dust removal device - Google Patents

Abstract

The invention discloses a two-stage vacuum cleaner dust removal device, which comprises an upstream cyclone separator and several downstream cyclone separators, the downstream cyclone separator is located below the upstream cyclone separator, and the air outlet of the upstream cyclone separator is connected to the downstream The air inlet of the cyclone separator is connected; the invention can reduce the volume of the body while increasing the air volume, while maintaining a high dust removal efficiency, and the downstream cyclone separator adopts a diffusion structure, and the airflow is decelerated and centrifugal when it rotates in the cylinder , the airflow pressure loss is small, and the dust collection effect is good.

Description

Two-stage vacuum cleaner dust removal device

technical field

The invention relates to a two-stage vacuum cleaner dust removal device.

Background technique

A filter device is installed in a traditional vacuum cleaner to filter the inhaled dirty air and keep the dust particles in the dust collection device. Therefore, after using this type of vacuum cleaner for a period of time, the user should clean or replace the filter device. Otherwise, the filter holes of the filter device will be blocked by fine dust, which will increase the resistance of the vacuum motor, and even burn out the motor in severe cases, which not only brings trouble to the user, but also affects the performance and life of the vacuum cleaner.

In recent years, based on the principle of cyclone separation, manufacturers have replaced filter devices with cyclone dust collectors, which have achieved better dust removal effects, and are therefore widely used in vacuum cleaners. The cyclone dust removal device is provided with a conical cylinder with a large upper end and a small lower end in the dust cup. An air outlet pipe is arranged longitudinally on the upper end of the conical cylinder. The lower end of the conical cylinder is open to facilitate dust falling into the bottom of the dust cup. The air inlet pipe enters the upper side wall of the conical cylinder along the tangential direction, so that the airflow with dust will generate a whirlwind in the conical cylinder, and the dust particles will fall to the dust box along the side wall of the conical cylinder under the action of centrifugal force. At the bottom, the airflow after dust removal is discharged upward through the air outlet pipe.

However, the cyclone dust removal device also has the disadvantage of a large volume, especially the volume of the cyclone dust removal device used on a large vacuum cleaner with a large air flow requirement is larger, which not only increases the cost, but also is more troublesome for users to use.

Contents of the invention

The object of the present invention is to provide a two-stage vacuum cleaner dust removal device, which includes an upstream cyclone separator and several downstream cyclone separators, the air outlet of the upstream cyclone separator is connected to the inlet of several downstream separators. The air port is connected, which can increase the air volume without increasing the volume of the machine and maintain a high dust removal efficiency.

The technical solution of the present invention is: a two-stage vacuum cleaner dust removal device, which includes an upstream cyclone separator and several downstream cyclone separators, the downstream cyclone separator is located below the upstream cyclone separator, and the outlet of the upstream cyclone separator The tuyere is in communication with the air inlet of the downstream cyclone separator.

The further technical solution of the present invention is: a two-stage vacuum cleaner dust removal device, the device includes an upstream cyclone separator and several downstream cyclone separators, the downstream cyclone separator is located below the upstream cyclone separator, and the upstream cyclone separator The air outlet communicates with the air inlet of the downstream cyclone separator; the upstream cyclone separator includes a cylindrical dust cup with a cyclone air inlet, and a cylindrical dust cup full of small holes is coaxially arranged in the cylindrical dust cup. In the filter cover, the top of the cylindrical dust cup is provided with an air outlet, and the bottom end is provided with a dust outlet. The top of the cylindrical filter cover is opened and connected to the air outlet; The tuyere communicates with the air inlet of the downstream cyclone separator through the air duct formed by the gap between the outer cover tube and the cylindrical dust cup; the lower section of the cylindrical dust cup is funnel-shaped, and the inner wall of the funnel-shaped dust cup is provided with a A spiral blade that rotates downward; a conical protrusion that protrudes downward and partially extends into the cylindrical filter cover is provided in the middle of the top of the outer cover cylinder.

The more detailed technical solution of the present invention is: a two-stage vacuum cleaner dust removal device, the device includes an upstream cyclone separator and several downstream cyclone separators, the downstream cyclone separator is located below the upstream cyclone separator, and the upstream cyclone separator The air outlet of the air outlet communicates with the air inlet of the downstream cyclone separator; the upstream cyclone separator includes a cylindrical dust cup with a cyclone air inlet, and a cylinder full of small holes is coaxially arranged in the cylindrical dust cup shaped filter cover, the top of the cylindrical dust cup is provided with an air outlet, the bottom is provided with a dust outlet, the top of the cylindrical filter cover is open and connected to the air outlet; the cylindrical dust cup is covered with an outer cover tube, The air outlet communicates with the air inlet of the downstream cyclone separator through the air duct formed by the gap between the outer cover tube and the cylindrical dust cup; the lower section of the cylindrical dust cup is funnel-shaped, and the inner wall of the funnel-shaped dust cup is designed There is a circle of spiral blades that rotate downward; the top of the outer cover tube is provided with a conical protrusion that protrudes downward and partially extends into the cylindrical filter cover; the downstream cyclone separator includes a cyclone inlet The cylindrical cylinder body of the tuyere, the lower end of the cylindrical cylinder body is connected with a conical cylinder body, the cylindrical cylinder body is connected with the small end of the conical cylinder body, and an air outlet pipe is coaxially arranged in the cylindrical cylinder body; the upstream There is a double-layer wind hood between the cyclone separator and several downstream cyclone separators. The inner ring of the double-layer wind hood is the air outlet hood. The air outlet pipe of the downstream cyclone separator is connected with the air outlet hood. There is an exhaust pipe connected to the side of the double-layer wind hood, and the air inlet hood is between the inner ring and the outer ring of the double-layer wind hood, and the air inlet hood is connected with the air duct. , the upper section of the cylindrical shell of the downstream cyclone separator and the cyclone air inlet arranged on the upper section are arranged in the cyclone cover; the several downstream cyclone separators located below the upstream cyclone separator are arranged in the upper upstream cyclone separator On the same circle where the axis line is the center of the circle, a partition is connected between two adjacent downstream cyclone separators, and a dust collection tube is formed in the middle of the partition, and the dust falling port at the bottom of the cylindrical dust cup passes through the double-layer wind turbine from the middle. The hood and the cyclone hood are connected with the dust collection tube; the lower part of the conical cylinder is provided with an umbrella-shaped reflector, and the center of the umbrella-shaped reflector is provided with a return hole. There is a dust falling ring gap between them, the bottom of the conical cylinder is connected with a dust collecting hopper, and the bottom of the dust collecting hopper and the middle dust collecting cylinder is provided with a lower cover.

The advantages of the present invention are:

1. The present invention includes an upstream cyclone separator and several lower downstream cyclone separators, the air outlet of the upstream separator communicates with the air inlets of several downstream cyclone separators, which can increase the air volume without increasing the volume of the machine body, Maintain a high dust removal efficiency.

2. Since the air outlet of the upstream cyclone separator of the present invention enters the cyclone air inlet of the downstream cyclone separator from the inner channel around the dust cup, and several downstream cyclone separators are distributed in a circular shape, and the middle is the collector of the upstream cyclone separator. Therefore, the structure is relatively compact, and the arrangement of the upstream cyclone separator and the downstream cyclone separator is relatively convenient.

3. The cone-shaped barrel of the downstream cyclone separator in the prior art is in the shape of a funnel, and the cyclone air inlet is located at the upper large end, relying on the accelerated rotation of the airflow to separate the dust, so the pressure loss of the airflow is relatively large, which affects the suction of the vacuum cleaner. dust effect, and the accelerated air flow is easy to raise the fine dust that sinks into the bottom of the dust cup again, and is discharged from the air outlet pipe together with the air flow, resulting in secondary pollution. The downstream cyclone separator of the present invention adopts a diffusion structure, and the The cylindrical cylinder has a small upper end and a larger lower end. The cyclone air inlet is located at the upper small end. When the airflow rotates in the cone-shaped cylinder, it is in a decelerated centrifugal state, which makes the airflow pressure loss small, so it can achieve better dust collection effect.

4. The rotation speed of the airflow in the lower part of the downstream cyclone separator of the present invention is slower than that in the upper part, so the dust at the bottom of the dust cup can be avoided to generate dust, thereby preventing secondary pollution.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Fig. 1 is the assembly schematic diagram of the present invention;

Fig. 2 is a front sectional view of the present invention;

Figure 3 is an outline view of the present invention.

Among them: 1 upstream cyclone separator; 2 downstream cyclone separator; 3 air outlet; 4 cyclone air inlet; 5 cyclone air inlet; 6 cylindrical dust cup; 7 cylindrical filter cover; 10 air duct; 11 conical cylinder; 12 cylindrical cylinder; 13 air outlet pipe; 14 double-layer air cover; 15 air outlet hood; 16 exhaust pipe; Partition; 21 Dust collecting tube; 22 Umbrella reflector; 23 Return hole; 24 Dust falling ring gap; 25 Dust collecting bucket; 26 Lower cover;

Detailed ways

Embodiment: As shown in Fig. 1, Fig. 2 and Fig. 3, a two-stage vacuum cleaner dust removal device includes an upstream cyclone separator 1 and nine downstream cyclone separators 2, and the downstream cyclone separators 2 are located in the upstream cyclone Below the separator 1, and arranged on the same circle with the axis line of the upstream cyclone separator 1 as the center;

The upstream cyclone separator 1 includes a cylindrical dust cup 6 with a cyclone air inlet 5, and a cylindrical filter cover 7 full of small holes is coaxially arranged inside the cylindrical dust cup 6, and the cylindrical dust cup 6 The top of the top is provided with an air outlet 3, the bottom is provided with a dust outlet 8, the top of the cylindrical filter cover 7 is open and connected to the air outlet 3, the cylindrical dust cup 6 is covered with a cover tube 9, and the air outlet 3 passes through the cover The air duct 10 formed by the gap between the barrel 9 and the cylindrical dust cup 6 communicates with the air inlet 4 of the downstream cyclone separator 2. The lower section of the cylindrical dust cup 6 is funnel-shaped, and the inner wall of the funnel-shaped dust cup 28 There is a circle of spiral blades 29 that rotate downwards, and the middle of the top of the outer cover cylinder 9 is provided with a conical protrusion 27 that protrudes downwards and partially extends into the cylindrical filter cover 7;

Downstream cyclone separator 2 comprises a cylindrical shell 12 with cyclone air inlet 4, the lower end of cylindrical shell 12 is connected with conical shell 11, and cylindrical shell 12 is connected with the small end of conical shell 11, An air outlet pipe 13 is coaxially arranged in the cylindrical barrel 11, and a double-layer wind cover 14 is arranged between the upstream cyclone separator 1 and the nine downstream cyclone separators 2, and the inner circle of the double-layer wind cover 14 is Outlet hood 15, the outlet pipe 13 of the downstream cyclone separator 2 communicates with the outlet hood 15, the side of the outlet hood 15 is connected with an exhaust pipe 16, between the inner ring and the outer ring of the double-layer wind hood 14 is an inlet The wind cover 17, the wind inlet cover 17 communicates with the air duct 10, the below of the wind inlet cover 17 is provided with a cyclone cover 18, the wind inlet cover 17 communicates with the cyclone cover 18, the upper section 19 of the cylindrical body 12 of the downstream cyclone separator 2 And the cyclone air inlet 4 arranged on the upper section 19 is arranged in the cyclone cover 18;

The partitions 20 are connected between the nine downstream cyclone separators 2, and the dust collection tube 21 is formed in the middle of the partitions 20, and the dust falling port 8 at the bottom of the cylindrical dust cup 6 passes through the double-layer wind cover 14 and the cyclone cover 18 from the middle to the collector. The dust cylinder 21 is connected;

The lower part of the conical cylinder 11 is provided with an umbrella-shaped reflector 22, and the center of the umbrella-shaped reflector 22 is provided with a return hole 23, and a dust drop ring is provided between the periphery of the umbrella-shaped reflector 22 and the side wall of the conical cylinder 12. There is a gap 24, the bottom of the conical cylinder 12 is connected with a dust hopper 25, and the bottom of the dust hopper 25 and the middle dust collection cylinder 21 is provided with a lower cover 26.

During use, the dirty air containing dust enters the cylindrical dust cup 6 from the cyclone air inlet 5, the coarse dust falls into the dust collection tube 21 through the dust falling port 8, and the fine dust and air continue to enter the interior of the cylindrical filter cover 7 , and enter the air duct 10 from the air outlet 3 at the upper end of the cylindrical dust cup 6, then enter the air inlet hood 17 downward from the air duct 10, and then enter the cyclone air inlet 4 of each downstream cyclone separator 2, and A whirlwind is formed in the cylindrical barrel 12. During the whirlwind process, the fine dust falls along the inner wall of the conical barrel 11 and enters the bottom of the dust collecting bucket 25 through the dust falling ring gap 24. It enters the air outlet hood 15 upwards, and is concentratedly discharged by the exhaust pipe 16 on the air outlet hood 15 .

Claims (8)

1. A two-stage vacuum cleaner dust removal device, the device comprises an upstream cyclone separator (1) and several downstream cyclone separators (2), and the downstream cyclone separators (2) are located below the upstream cyclone separators (1) , the air outlet (3) of the upstream cyclone separator (1) communicates with the air inlet (4) of the downstream cyclone separator (2), and it is characterized in that: the upstream cyclone separator (1) includes a cyclone air inlet ( 5) the cylindrical dust cup (6), the cylindrical dust cup (6) is coaxially provided with a cylindrical filter cover (7) full of small holes, the top of the cylindrical dust cup (6) An air outlet (3) is provided, a dust drop outlet (8) is provided at the bottom, and the top of the cylindrical filter cover (7) is open and connected to the air outlet (3). 2. The two-stage vacuum cleaner dust removal device according to claim 1, characterized in that: the cylindrical dust cup (6) is covered with an outer cover cylinder (9), and the air outlet (3) passes through the outer cover cylinder (9) The air duct (10) formed by the gap between the cylindrical dust cup (6) communicates with the air inlet (4) of the downstream cyclone separator (2). 3. The two-stage vacuum cleaner dust removal device according to claim 1, characterized in that: the lower section of the cylindrical dust cup (6) is funnel-shaped, and the inner wall of the funnel-shaped dust cup (28) is provided with a circle downward Rotating helical blades (29). 4. The two-stage vacuum cleaner dust removal device according to claim 1, characterized in that: the top middle of the outer cover cylinder (9) is provided with a downward protruding and partially extending into the cylindrical filter cover (7). Tapered protrusion (27). 5. The two-stage vacuum cleaner dust removal device according to claim 1, characterized in that: the downstream cyclone separator (2) comprises a cylindrical cylinder (12) with a cyclone air inlet (4), the cylindrical cylinder The lower end of the body (12) is connected with a conical barrel (11), the cylindrical barrel (12) is connected with the small end of the conical barrel (11), and a coaxial outlet is arranged inside the cylindrical barrel (11). air duct (13). 6. The two-stage vacuum cleaner dust removal device according to claim 1, 2 or 5, characterized in that: a double-layer cyclone separator (1) and several downstream cyclone separators (2) are provided Wind cover (14), within the inner ring of double-layer wind cover (14) is air outlet cover (15), and the air outlet pipe (13) of downstream cyclone separator (2) is communicated with air outlet cover (15), and the air outlet The side of the cover (15) is connected with an exhaust pipe (16), between the inner ring and the outer ring of the double-layer wind cover (14) is an air intake cover (17), and the air intake cover (17) and the air duct (10) Connected, the following of the air inlet hood (17) is provided with a cyclone hood (18), the air inlet hood (17) communicates with the cyclone hood (18), and the upper section ( 19) and the cyclone air inlet (4) that is arranged on the upper section (19) and is arranged in the cyclone cover (18). 7. The two-stage vacuum cleaner dust removal device according to claim 6, characterized in that: the several downstream cyclone separators (2) located below the upstream cyclone separator (1) are arranged on the upstream cyclone separator (1) ) on the same circle where the axis line is the center of the circle, a partition (20) is connected between two adjacent downstream cyclone separators (2), and a dust collection tube (21) is formed in the middle of the partition (20), cylindrical The dust falling port (8) at the bottom of the dust cup (6) passes through the double-layer wind cover (14) and the cyclone cover (18) from the middle to communicate with the dust collection tube (21). 8. The two-stage vacuum cleaner dust removal device according to claim 5, characterized in that: the lower part of the conical cylinder (11) is provided with an umbrella-shaped reflector (22), and the center of the umbrella-shaped reflector (22) A return hole (23) is provided, a dust falling annular gap (24) is provided between the periphery of the umbrella-shaped reflector (22) and the side wall of the conical cylinder (12), and the bottom of the conical cylinder (12) is connected with Dust collecting bucket (25), the bottom of dust collecting bucket (25) and middle part dust collecting tube (21) is provided with lower cover (26).

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