CN100420416C - Multiple air inlet separation device and dust cup device containing the device - Google Patents

Abstract

The invention discloses a two-stage separation device with multiple air inlets for a vacuum cleaner, which comprises a circular cylinder connected up and down, a conical cylinder, and an air outlet pipe coaxially arranged inside the circular cylinder. The side wall is connected with two air inlet pipes whose center line is involute shape and whose longitudinal section is rectangular. In the same plane passing through the axis of the circular cylinder and in opposite directions; the invention can increase the air intake area of the vacuum cleaner and improve the dust removal efficiency of the vacuum cleaner.

Description

Multiple air inlet separation device and dust cup device containing the device

technical field

The invention relates to a separation device with multiple air inlets and a dust cup device containing the device.

Background technique

On March 5, 2003, the State Intellectual Property Office authorized and announced an invention patent named "Deceleration Centrifugal Dust Removal Device for Vacuum Cleaner" and the patent number is ZL02220336.2. The patent disclosed "a deceleration centrifugal dust removal device for vacuum cleaner, including The circular cylinder, the conical cylinder and the dust collection box connected in sequence from top to bottom, the air outlet pipe and the air inlet pipe on the circular cylinder, the upper end of the conical cylinder is small, the lower end is large, and the inside of the conical cylinder An umbrella-shaped reflector is located below the air outlet pipe, and the center of the umbrella-shaped reflector is provided with a return hole. There is a dust-falling annular gap between the periphery of the umbrella-shaped reflector and the side wall; the air pressure loss of the device is small, and the dust is collected Good effect, high dust filtering precision, low working noise, can effectively avoid the secondary pollution of the air, especially suitable for the secondary filter system of the vacuum cleaner to separate fine dust.”

Since the separation device has only one air inlet, the area of the air inlet is difficult to expand, which has become the main reason for restricting the increase of the air volume of the vacuum cleaner.

Contents of the invention

The purpose of the present invention is to provide a separation device with multiple air inlets and a dust cup device containing the device, which can increase the air inlet area of the vacuum cleaner and improve the dust removal efficiency of the vacuum cleaner.

The technical solution of the present invention is: a separation device with multiple air inlets, including a cylinder body, an air outlet pipe and an air inlet pipe arranged on the cylinder body, at least two air inlet pipes are provided; the cylinder body includes upper and lower A connected circular cylinder and a tapered cylinder, the air outlet pipe is coaxially arranged in the circular cylinder, and the air inlet pipe is connected to the side wall of the circular cylinder; The height positions on the body are the same, the circumferential positions are staggered by 180°, and their air inlets are located in the same plane passing through the axis of the circular cylinder and facing oppositely; the centerlines of the two air inlet pipes are in the shape of an involute; the The longitudinal sections of the two air inlet pipes are rectangular.

A dust cup device with multiple air inlet separation devices, comprising a cup cover and a cup body, the cup cover is provided with an air outlet, the cup body is provided with an air inlet port, the cup body is equipped with a first-stage dust removal device, and the first-stage device is equipped with The secondary device, the primary dust removal device is a filter screen cover, the secondary dust removal device is a multi-air inlet separation device, the upper port of the filter screen cover is cut off by the upper partition between the cup cover and the cup body, the filter screen cover The lower port is closed by the lower partition on the periphery of the multi-air inlet separation device, the air inlet pipe of the multi-air inlet separation device is located in the filter screen cover, and the air outlet pipe passes through the upper partition to communicate with the air outlet on the cup cover.

The advantages of the present invention are:

1. On the basis of the existing separation device, the present invention adds an air inlet to increase the air intake area, so that the air volume is significantly increased compared with the existing device, and the dust removal efficiency of the vacuum cleaner is also improved.

2. The present invention adopts two involute inlet pipes. Under the same inlet area and inlet adjustment, the inlet width can be reduced, and the dust-laden airflow enters the dust removal device body far away from the central area. Under the same centrifugal force , the shorter the distance the dust moves to the wall, the better the separation efficiency.

Description of drawings

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

Fig. 1 is the front view of prior art;

Fig. 2 is the top view of circular barrel in Fig. 1;

Fig. 3 is the front view of the present invention;

Fig. 4 is a top view of the circular cylinder in Fig. 3;

Fig. 5 is the assembly drawing of dust cup device;

Fig. 6 is an external view of the dust cup device.

Among them: 1 circular cylinder; 2 conical cylinder; 3 air outlet pipe; 4 air inlet pipe; 5 air inlet; 6 cup cover; 7 cup body; 8 air outlet; 9 air inlet; 10 filter screen cover; 11 Separation device with multiple air inlets; 12 upper partitions; 13 lower partitions.

Detailed ways

Embodiment: As shown in Fig. 3 and Fig. 4, a multi-air inlet separation device includes a circular cylinder 1 and a conical cylinder 2 connected up and down, and an air outlet pipe coaxially arranged inside the circular cylinder 1 3. The side wall of the circular cylinder 1 is connected with two air inlet pipes 4 whose center line is involute and whose longitudinal section is rectangular. The height positions of the two air inlet pipes 4 on the circular cylinder 1 The same, the circumferential positions are staggered by 180°, and their air inlets 5 are located in the same plane passing through the axis of the circular cylinder 1 and facing oppositely.

As shown in Fig. 1 and Fig. 2, in the existing device, the width of the air inlet pipe 4 is a ₁ , the height is b, and the area is m ₁ = a ₁ × b, m ₁ becomes the bottleneck restricting the air volume in the device, the premise m ₁ is smaller than the area πr ² of the air outlet pipe 3, which is determined by the shape and structure of the vacuum cleaner.

As shown in Figure 3 and Figure 4, in order to increase the air intake area, the present invention adopts a double air intake pipe structure, the air intake area m ₂ =2a ₂ ×b, which increases the air intake area compared with the existing device, and at the same time, if m ₂ is greater than the area πr ² of the air outlet pipe 3, the air outlet becomes the bottleneck of the device. On the premise of ensuring the dust removal efficiency, increasing the diameter of the air outlet pipe 3 can also increase the air volume of the device.

In addition, in the case of the same inlet area and the height of the intake pipe, a ₂ can be reduced, that is, a ₂ is only half of a ₁ , which makes the dust-laden air flow enter the dust removal device body away from the central air outlet, which is beneficial Improve dust removal efficiency.

As shown in Figure 5 and Figure 6, a dust cup device with multiple air inlet separation devices includes a cup cover 6 and a cup body 7, the cup cover 6 is provided with an air outlet 8, and the cup body 7 is provided with an air inlet 9 , the cup body 7 is equipped with a first-level dust removal device, and the first-level device is provided with a second-level device. The upper port is cut off by the upper partition 12 between the cup cover 6 and the cup body 7, the lower port of the filter screen cover 10 is closed by the lower partition 13 on the periphery of the multi-air inlet separating device 11, and the air inlet of the multi-air inlet separating device 11 The pipe 4 is located in the filter screen cover 10 , and the air outlet pipe 2 passes through the upper partition 12 and communicates with the air outlet 8 on the cup cover 5 .

Claims (1)

1. A dust cup device, comprising a cup cover (6) and a cup body (7), the cup cover (6) is provided with an air outlet (8), the cup body (7) is provided with an air inlet (9), the cup A first-level dust removal device is installed in the body (7), and a second-level device is arranged in the first-level device, and it is characterized in that: the first-level dust removal device is a filter screen cover (10), and the second-level dust removal device is a multi-air inlet separation device ( 11), the upper port of the filter screen cover (10) is cut off by the upper partition (12) between the cup cover (6) and the cup body (7), and the lower port of the filter screen cover (10) is separated by a multi-air inlet separation device (11) The lower partition (13) on the periphery is closed, the air inlet pipe (4) of the multi-air inlet separation device (11) is located in the filter screen cover (10), and the air outlet pipe (2) passes through the upper partition (12) ) communicates with the air outlet (8) on the bowl cover (5).

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