WO2020024537A1 - Spiral dust and gas separating device and gas purification device - Google Patents

Abstract

Disclosed are a spiral dust and gas separating device and a gas purification device. The spiral dust and gas separating device comprises: a cup body (1) and a separator (2). The separator (2) comprises: an upper flow guide blade (231) and a lower flow guide blade (232) spiralling downward and parallel to each other, and further comprises an inner tube (21) and an outer tube (22). A first guide channel is arranged between an outer wall of the separator (2) and an inner wall of the cup body (1). The outer tube (22), the inner tube (21), the upper flow guide blade (231) and the lower flow guide blade (232) together constitute a second guide channel. By means of arranging the first guide channel and the second guide channel, secondary separation of a dust laden gas flow is achieved, realizing a better dust and gas separation effect. Furthermore, the spiral dust and gas separating device only comprises the cup body (1) and the separator (2), and thus the device has a simple and compact structure by sheathing the two together.

Description

Spiral dust gas separation device and gas purification device

This application claims the priority of a Chinese patent application filed on July 31, 2018 with the Chinese Patent Office, application number 201810857479.9, and the invention name "a spiral dust gas separation device and gas purification device", the entire contents of which are incorporated by reference In this application.

Technical field

The invention relates to the technical field of vacuum cleaners, in particular to a spiral dust gas separation device and a gas purification device.

Background technique

Because the dust cup can be used repeatedly, unlike the dust bag type, which requires frequent replacement of the dust bag, it is loved and used by more and more people. The separator in the existing vacuum cleaner mostly uses a cyclone secondary separation. The air containing impurities enters the dust and dirt cup along the tangential direction. During the rotation process from top to bottom, large particles and heavier impurities are denser than air. A large centrifugal force hits the inner wall of the first-stage separator and loses its inertia. It falls into the dust collection chamber below and separates from the air. Fine impurities and air enter the second-stage separator. Fine dust collides with the second-stage separator. The inner wall of the device loses its inertia and falls into the dust collection chamber below to separate from the air, and the clean air passes through filtering components such as sponges and is discharged into the atmosphere.

Patent CN105246385A discloses a cyclone separation device, as shown in FIG. 1, which includes a cyclone chamber 5, a collection chamber 6, a guide member 8 and an intermediate exhaust pipe, the guide member is provided with a front end, a tail end and a guide surface, and is entrained. Debris in the airflow of the cyclone chamber 5 passes through the front end of the guide member, enters the guide surface, and then enters the collection chamber 6 from the tail end. The separation device has a simple structure, but is characterized by the rotating airflow and the middle exhaust pipe leading to dust. In the cyclone separation process, the dirt is easily discharged directly because it is too close to the exhaust pipe, and the separation effect is poor.

Patent CN101816537B discloses a cyclone separation device, as shown in FIG. 2, which includes an upstream cyclone separation device 2 and a downstream cyclone separation component 8 provided around a central axis 16 of the cyclone separation device. The downstream cyclone separation component 8 is in turn It includes several cyclones 9 connected in parallel to each other, which together construct a curved cyclone channel to achieve multi-stage separation of dust and gas, thereby effectively solving the defect of poor separation effect existing in CN105246385A. The cyclone separator described here is a combination of multiple parts to form a primary or secondary separation cavity. The disadvantage is that there are many parts and the structure is complicated.

Summary of the invention

Therefore, the technical problem to be solved by the present invention is to achieve a good dust-gas separation effect while ensuring a simple structure.

To this end, the present invention provides a spiral dust-gas separation, including:

The cup body is provided with a cup body air inlet on the side wall.

A separator is detachably disposed inside the cup body, a first guide channel is provided between an outer wall of the separator and an inner wall of the cup body, and an air outlet is provided on the top of the separator.

The separator includes:

Upper guide vanes and lower guide vanes that are parallel to each other and spiral downward;

An inner pipe, and the inner edges of the upper and lower guide vanes are connected to the inner pipe;

An outer tube is coaxially disposed on the outer side of the inner tube, and the outer tube, the inner tube, the upper guide vane and the lower guide vane collectively constitute a second guide channel.

The dust-containing airflow entering from the cup air inlet enters the second guide channel under the action of an external suction fan and makes downward spiral movement in the second channel. In this process, the spiral The large-mass impurities in the dust gas are screwed onto the inner wall of the separator in the second guide channel, and the kinetic energy of the movement is reduced by friction with the inner wall, and the large-mass impurities will fall freely to the cup body. At the bottom, first-order separation is achieved.

The dust-containing airflow in the second guide channel separated by the first stage flows out to the first guide channel. Under the action of inertia and the effect of an external suction fan, the dust-containing airflow will continue to spiral, but the first guide The channel has a larger spiral diameter, which further reduces the kinetic energy of the impurities in the dust-containing airflow, and further causes the lighter weight impurities to fall to the bottom of the cup due to insufficient kinetic energy, thereby achieving secondary separation. The dust-containing airflow that has passed through the secondary separation flows out to the outside through the air outlet.

A filter is provided at a position of the separator corresponding to the air outlet.

The upper end of the inner tube is provided with a receiving groove for setting the filter.

The outer tube is provided with a separator air inlet opposite to the cup air inlet.

The starting ends of the upper guide vane and the lower guide vane are connected to the air inlet of the separator, and have a tangential positional relationship with the direction of the dust gas inlet, ensuring entry into the second guide channel. The dusty airflow does spiral motion as early as possible, avoiding the disorder of airflow at the air inlet of the separator.

A top cover is formed inwardly at the upper end of the inner tube. If there is a gap between the lower end of the inner tube and the bottom end of the cup body, dust-containing gas will flow out to the air outlet through the inner tube. The top cover can effectively prevent it The above phenomenon occurred.

The lower end of the inner tube is in contact with the bottom end surface of the cup. The outer tube is provided with a notch for the dust-containing airflow to flow out, and the dust-containing airflow in the second guide channel flows out from the notch on the outer wall.

Positioning ribs extending away from the longitudinal axis of the receiving groove are provided on the outer wall of the receiving groove, and positioning grooves matching the positioning ribs are provided on the inner wall of the cup, so that the separator and Equipment is simpler.

A gas purification device is also provided, including any one of the spiral dust gas separation devices described above, and the gas purification device is a vacuum cleaner.

The technical solution of the present invention has the following advantages:

1. The spiral dust and gas separation device provided by the present invention, a cup body, a cup body is provided with an air inlet on a side wall; a separator is detachably disposed inside the cup body, and a dust outlet is disposed on the top, the separation A first guide channel is provided between the outer wall of the hood and the inner wall of the dirt cup, and an air outlet is provided on the top of the separator; the separator includes: upper guide vanes and downward spirals that are parallel to each other and spiral downward. Guide vanes; an inner pipe, the inner edges of the upper and lower guide vanes are connected to the inner pipe; an outer pipe coaxially disposed on the outer side of the inner pipe, the outer pipe, the The inner pipe, the upper deflector blade and the lower deflector blade together constitute a second guide passage; the dust-containing airflow entering from the cup air inlet enters the second guide passage through the outer pipe, so The dust-containing airflow in the second guide channel flows out to the first guide channel, the dust in the dust-containing airflow is deposited downward in the first guide channel, and the purified airflow flows out from the air outlet. The invention realizes the secondary separation of dust and gas by providing a first guide channel and a second guide channel, and improves the dust and gas separation effect. The separator is detachably disposed inside the cup body, so that the overall structure is compact and simple. .

2. In the spiral dust-gas separation device provided by the present invention, a filter is provided at a position corresponding to the separator and the air outlet, so as to further purify the gas from the air outlet.

3. In the spiral dust-gas separation device provided by the present invention, the starting ends of the upper guide vane and the lower guide vane are connected to the air inlet of the separator, and have a tangential positional relationship with the direction of dust air intake. This ensures that the dust-laden airflow entering the second guide channel performs spiral motion as early as possible, and avoids the phenomenon that the airflow disorder of the air inlet of the separator occurs.

4. In the spiral dust gas separation device provided by the present invention, a top cover is formed inwardly at the upper end of the inner tube. If there is a gap between the lower end of the inner tube and the bottom end of the cup body, dust-containing gas will pass through the inner tube. The outflow to the air outlet can effectively prevent the above phenomenon after setting the top cover.

5. The upper end of the inner tube in the spiral dust gas separation device provided by the present invention is provided with a receiving groove for setting the filter, which facilitates the replacement of the filter.

6. An outer wall of the accommodating groove in the spiral dust gas separation device provided by the present invention is provided with positioning ribs extending away from the longitudinal axis of the accommodating groove, and an inner wall of the cup body is provided with the positioning ribs. The matching positioning slot makes the equipment of the separator and the cup easier.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the description of the prior art are briefly introduced below. Obviously, the appendixes in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without paying creative labor.

FIG. 1 is a drawing of the background art of the present invention;

FIG. 2 is a drawing of the background art of the present invention;

3 is a cross-sectional view of a spiral dust gas separation device and a gas purification device provided in a first embodiment of the present invention;

4 is a schematic structural diagram of a separator provided in a first embodiment of the present invention;

5 is a separation principle diagram of a spiral dust gas separation device and a gas purification device provided in a first embodiment of the present invention;

FIG. 6 is an exploded view of the spiral dust gas separation device and the gas purification device provided in the first embodiment of the present invention.

Example reference sign description:

1-cup body; 2-separator; 3-filter; 11-cup air inlet; 21-inner tube; 22-outer tube; 23-baffle plate; 24-receiving slot; 25-separator air inlet 231-upper guide vane; 232-downward guide vane; 241-locating ribs; 242-outlet; a-inlet trajectory; b-outlet trajectory; C-spiral air duct trajectory.

detailed description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplified description, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific orientation Construction and operation should therefore not be construed as limiting the invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only, and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" should be understood in a broad sense unless otherwise specified and limited. For example, they may be fixed connections or removable. Connected or integrated; it can be mechanical or electrical; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

As shown in FIG. 3 to FIG. 6, a spiral dust gas separation device provided in this embodiment includes a cup body 1, a cup body air inlet 11 and a separator 2 are provided on a side wall, and are detachably embedded in the housing. The inside of the cup body 1 is described.

The separator 2 is provided with an upper deflector blade 231 and a lower air deflector 232 that are parallel to each other and spiral downward. The upper deflector blade 231 and the starting end of the lower deflector blade 232 are connected to the separator. The air inlet 25 is in a tangential positional relationship with the dust gas inlet direction;

The inner tube 21 has a top cover formed inwardly at the edge of the upper end to prevent dust from diffusing from the middle of the inner tube 21 to the outside. The inner edges of the upper guide vane 231 and the lower guide vane 232 are connected to the inside. On the tube 21, an accommodating groove 24 is provided on the upper end of the inner tube 21 to set the filter 3. The outer wall of the accommodating groove 24 is provided with a positioning extending in a direction away from the longitudinal axis of the accommodating groove. A rib 241 is provided on the inner wall of the cup body 1 with a positioning groove matching the positioning rib 241.

The outer tube 22 is coaxially disposed on the outer side of the inner tube 21, and a separator air inlet 25 is disposed on the outer tube 22 opposite to the cup air inlet 11. In this embodiment, the air inlet 25 of the separator includes a through hole provided on a side wall of the separator 2, the shape of the through hole is the same as the shape of the air inlet 11 of the cup body, and along the edge of the through hole An air inlet duct formed in an axial direction thereof, and one end of the air inlet duct extends to the cup air inlet 11.

The lower end of the inner tube 21 is in contact with the bottom end surface of the cup body 1. The outer tube 2 is provided with a gap for the dust-containing airflow to flow out, and the dust-containing airflow in the second guide channel is notched from the outer wall. Everywhere.

Figure 5 shows the dust-gas separation principle of the spiral dust-gas separation device described in this embodiment:

Wherein, a first guide passage is provided between the outer wall of the separator 2 and the inner wall of the cup body 1 in the above-mentioned spiral dust-gas separation device, the outer tube 22, the inner tube 21, and the upper tube. The guide vanes 231 and the lower guide vanes 232 together constitute a second guide channel;

The dust-containing airflow entering from the cup air inlet 11 enters the second guide channel under the action of an external suction fan and makes downward spiral movement in the second channel. In this process, by the spiral centrifugal force, The large-mass impurities in the dust-containing gas are screwed onto the inner wall of the separator 2 in the second guide channel, and the frictional kinetic energy is reduced by friction with the inner wall, and the large-mass impurities will fall freely to the The bottom of the cup body 1 achieves first-level separation.

The dust-containing airflow in the second guide channel separated by the first stage flows out to the first guide channel. Under the action of inertia and the effect of an external suction fan, the dust-containing airflow will continue to spiral, but the first guide The channel has a larger spiral diameter, which further reduces the kinetic energy of the impurities in the dust-containing airflow, and further causes the lighter-weight impurities to fall to the bottom of the cup body 1 due to insufficient kinetic energy, thereby achieving secondary separation.

The dust-containing airflow that has passed through the secondary separation flows out of the air outlet 242 through the filter screen of the separator to the outside.

Example 2

This embodiment provides a gas purification device, specifically a vacuum cleaner, including:

The spiral dust-gas separation device described in the above embodiment 1 has its technical advantages.

Obviously, the foregoing embodiment is merely an example for clear description, and is not a limitation on the implementation. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. There is no need and cannot be exhaustive for all implementations. However, the obvious changes or variations introduced thereby are still within the protection scope created by the present invention.

Claims (10)

1. A spiral dust-gas separation device, comprising:

   The cup body (1) is provided with a cup body air inlet (11) on the side wall;

   A separator (2) is detachably disposed inside the cup body (1), and a first guide channel is provided between an outer wall of the separator (2) and an inner wall of the cup body (1), The top of the separator (2) is provided with an air outlet (242);

   The separator (2) includes:

   Upper guide vanes (231) and lower guide vanes (232) that are parallel to each other and spiral downward;

   An inner tube (21), and the inner edges of the upper guide vane (231) and the lower guide vane (232) are connected to the inner pipe (21);

   An outer tube (22) is coaxially disposed outside the inner tube (21), the outer tube (22), the inner tube (21), the upper guide vane (231), and the lower guide The flow vanes (232) collectively constitute a second guide channel;

   The dust-containing airflow entering from the cup inlet (11) enters the second guide channel through the outer tube (22), and the dust-containing airflow in the second guide channel flows out to the first guide In the channel, the dust in the dust-containing airflow is deposited downward in the first guide channel, and the purified airflow flows out from the air outlet (242).
2. The spiral dust gas separation device according to claim 1, wherein a filter (3) is provided at a position corresponding to the air outlet of the separator (2).
3. The spiral dust-gas separation device according to claim 2, wherein an upper end of the inner pipe (21) is provided with a receiving groove (24) for setting the filter (3).
4. The spiral dust and gas separation device according to claim 3, wherein a separator air inlet (25) is provided on the outer tube (22) opposite to the cup air inlet (11).
5. The spiral dust and gas separation device according to claim 4, characterized in that the starting ends of the upper guide vane (231) and the lower guide vane (232) are connected to the air inlet (25) of the separator And it has a tangential positional relationship with the direction of dust gas intake.
6. The spiral dust-gas separation device according to claim 1, wherein a top cover is formed inwardly at an edge of the upper end of the inner pipe (21) to prevent dust from diffusing from the middle of the inner pipe (21) to the outside.
7. The spiral dust gas separation device according to claim 6, characterized in that the lower end portion of the inner tube (21) contacts the bottom end surface of the cup (1), and the outer tube (22) is provided with The gap for the dust-containing airflow to flow out, and the dust-containing airflow in the second guide channel flows out from the gap on the outer wall.
8. The spiral dust and gas separation device according to claim 1, characterized in that the outer wall of the receiving groove (24) is provided with a positioning rib (241) extending away from the longitudinal axis of the receiving groove, and the cup The inner wall of the body (1) is provided with a positioning groove matched with the positioning rib (241).
9. A gas purification device, comprising at least one spiral dust gas separation device according to any one of claims 1-8.
10. The gas purification device according to claim 9, wherein the gas purification device is a vacuum cleaner.

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