KR100448544B1 - Vacuum cleaner - Google Patents

Abstract

A cleaner is disclosed. The present invention, the dust collecting chamber having a suction port and an outlet; Means for sucking outside air into the dust chamber through the suction port; A plurality of dust collecting units formed biaxially in the dust collecting chamber and sequentially centrifuging the dust-containing air flowing into the suction port; And a guide duct for guiding air introduced through the suction port to the discharge port through the plurality of dust collecting units. As a result, the dust bag can be removed and the filtering effect can be increased.

Description

Vacuum cleaner {Vacuum cleaner}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner, and in particular, to remove dust bags and collect dust by collecting dust from air containing dust sucked through the suction port, thereby eliminating the need to periodically replace and maintaining them. It is about a vacuum cleaner that can reduce costs.

The vacuum cleaner 1 is generally in the longitudinal direction detachably coupled to the cleaning main body 3 having the suction port 5 and the suction port 5 of the cleaning main body 3, as can be seen in FIG. It is composed of a stretchable stretchable tube 7 and a brush 15 engaged with the distal end of the stretchable tube 7. The cleaning body 3 has a dust collecting chamber 11 for collecting dust and a load driving chamber 21 in which a suction motor (23 in FIG. 2) for sucking outside air into the dust collecting chamber 11 is incorporated. These dust collecting chambers 11 and the load driving chamber 21 are divided by partition walls 20. The partition 20 is provided with an air passing hole (19 in FIG. 2).

The dust collecting chamber 11 is disposed upstream of the air flow direction with respect to the load driving chamber 21. And it has an upward opening 4, and the opening-closing cover 6 which can be rotated and opened in the front of this opening 4 is couple | bonded. In the dust collecting chamber 11, a replaceable dust bag 13 is incorporated. The dust bag 13 collects dust from the dust-containing air flowing through the inlet 5. In addition, a handle part 29 for a user is installed at an upper portion of the load driving chamber 21, and rotatable wheels 27 are provided at both sides in a lower region.

On the other hand, the expansion pipe (7) has a corrugated pipe (9) that extends and contracts in the longitudinal direction and an extension pipe (8) for engaging with the corrugated pipe (9). The hand grip 10 is formed in the mutual coupling area | region of these corrugated pipe 9 and the extension pipe 8. As shown in FIG. A brush 15 is coupled to the end of the extension pipe 8, and the brush 15 contacts the floorboard or carpet in the room. The bottom surface of the brush 15 is formed with an inlet (not shown) extending along the longitudinal direction thereof.

On the other hand, reference numeral 25 is a code wound in the cleaning body 3 and can be withdrawn.

With this configuration, FIG. 2 is a cross-sectional view of FIG. 1 showing the air flow state of a conventional vacuum cleaner. When power is applied, as shown in the figure, the suction motor 23 installed in the cleaning main body 3 rotates at high speed, and at this time, the impeller 24 fixed to the shaft also rotates at the same speed. Then, the air in the cleaning base body 3 is forcedly circulated, whereby the interior is in a high vacuum state.

In this case, a pressure difference occurs between the inside and the outside of the cleaning body 3, and air is sucked in through the inlet of the brush 4 by this pressure difference. At this time, when the brush 4 is in contact with the surface to be cleaned, for example, a carpet or a sheet, air containing dust is sucked in through the inlet of the brush 4.

In this way, the dust-containing air sucked in passes through the expansion pipe 7 and flows into the dust bag 13 in the dust collecting chamber 11 through the suction port 5 of the cleaning main body 3. At this time, the dust does not pass through the fine air hole (not shown) formed in the dust bag 13 is collected in the dust bag 13. On the other hand, the air passing through the air hole is clean air from which dust is removed, and flows into the load driving chamber 21 through the air passing hole 19 formed in the partition wall 20. The air introduced into the load driving chamber 21 is discharged to the outside through the inlet 26 through the suction motor 23.

By the way, in the conventional vacuum cleaner 1, since the dust etc. which flow in with the air through the suction port 5 are collected in the dust bag 13 accommodated in the dust collecting chamber 11 of the cleaning base body 3, The dust bag 13 is easily filled with dust. As such, the dust filled in the dust bag 13 decreases the suction power of the air and causes an overload of the suction motor 23, and thus should be replaced periodically, especially when the cleaning amount is excessive using a lot of equipment. It is inconvenient to replace 13) frequently.

In the conventional vacuum cleaner 1, furthermore, when the dust bag 13 is frequently replaced, there is a disadvantage that the maintenance cost is high.

Therefore, in view of these problems, recently, a so-called cyclone vacuum cleaner has been disclosed which filters out relatively large particles of dust before dust is collected in the dust bag 13 of the cleaning body 3. Such a cyclone vacuum cleaner is described in detail in Korean Utility Model Registration No. 1993-4891 and Korean Patent Application No. 1993-5099. Therefore, detailed description thereof will be omitted.

In such a cyclone vacuum cleaner, the amount of dust collected in the dust bag 13 is reduced, the dust bag 13 can be used for a long time, and the conventional dust bag 13 is easily filled with dust. There is an advantage that it is possible to prevent the deterioration of the generated suction force and overload of the suction motor.

However, even in such a cyclone vacuum cleaner, there is still a problem that the dust bag 13 inevitably needs to be used, whereby the dust bag 13 is often inconveniently replaced, and accordingly, the maintenance cost There is a problem of ascension.

Accordingly, an object of the present invention is to provide a vacuum cleaner that can reduce the maintenance cost while removing the dust bag by removing dust bags in consideration of these problems in the related art. .

It is another object of the present invention to provide a double cyclone vacuum cleaner which can perform highly efficient filtering by centrifuging the dust-containing air flowing through the inlet sequentially and separating the dust-containing air according to the particle size of the dust. .

1 is a perspective view of a conventional cleaner,

2 is a cross-sectional view of FIG.

3 is a cross-sectional view of a cleaner according to the present invention;

4 is a partially enlarged front sectional view of FIG. 3, specifically showing a dust collecting chamber;

5 is an exploded perspective view of FIG. 4;

FIG. 6 is a cross-sectional view taken along the line IV-IV of FIG. 4 and showing guide ducts; FIG.

7 is a longitudinal sectional view of the dust collecting unit according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

7: new building 11: dust collection room

15: brush 21: load driving room

23: suction motor 25: outlet

29: handle portion 33: cleaning basic body

34: front casing 36: inlet

38: opening and closing cover 39: outlet

40: bulkhead 41: rear casing

45: fixed plate 48: horizontal plate

51, 91: dust collection unit 52: first dust collection unit

53, 63: dust container 55: filter

57, 67, 73: combined groove 62: second dust collection

65: dust separation tube 71: upper cover

72: skirt portion 75, 78, 81: duct flow

74, 77, 80: intake port 76, 79, 82: exhaust port

93: protrusion

The above object, according to the present invention, a cleaner, comprising: a dust collecting chamber having an inlet and an outlet; Means for sucking outside air into the dust chamber through the suction port; A plurality of dust collecting units formed biaxially in the dust collecting chamber and sequentially centrifuging the dust-containing air flowing into the suction port; And a guide duct for guiding the air introduced through the suction port to the discharge port via the plurality of dust collecting units.

Wherein the plurality of dust collectors comprises at least two dust collectors arranged in parallel to each other; The suction port may correspond to any one side of the at least two dust collecting units, and the discharge port may be simply configured to correspond to the other side.

At this time, the guide duct, the front passage for communicating the one side dust collecting unit corresponding to the suction port; A central flow passage communicating the one dust collecting unit with the other dust collecting unit; And a rear flow passage communicating the other dust collecting unit and the discharge port.

On the other hand, each of the dust collecting unit, a dust container having the inlet; And dust separation means disposed in an upper region of the dust container to separate the dust by rotating the incoming air downward in the circumferential direction.

At this time, the dust separating means of one side is a cylindrical filter coaxial with the dust container; It is preferable that a plurality of fine intake holes are formed on the circumferential surface of the filter, and exhaust holes corresponding to the front communication holes of the central flow path formed on the upper surface thereof.

And, if the lower surface of the dust container is configured to protrude upward against the filter, it can form an effective falling vortex air flow in the dust container.

On the other hand, the dust separation means of the other dust collecting unit, it can be simply configured as a conical dust separator tube disposed coaxially with the dust container.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. At this time, the same reference numerals are used for the same names and configurations.

3 is a partial cross-sectional view of the cleaner according to the present invention. The cleaner 31 is, as described with reference to FIG. 1 of the related art, a cleaning basic body that forms a dust collecting chamber 11 having a suction port 36 and a load driving chamber 21 in which a suction motor 23 is incorporated. (33), the expansion pipe (7) detachably coupled to the suction port (36) of the cleaning body (33), and the brush (15) coupled to the distal end of the expansion pipe (7). The cleaning body 33 is composed of a combination of the front casing 34 and the rear casing 41.

The dust collecting chamber 11 is formed on the front casing 34 side, and the load driving chamber 21 is formed on the rear casing 41 side. Thereby, the dust collecting chamber 11 is arrange | positioned with respect to the load drive chamber 21 on the upstream side of an air flow direction. The dust collecting chamber 11 and the load driving chamber 21 are divided by the partition wall 40. The partition wall 40 is provided with a downward communication port 39 which communicates with the dust collecting chamber 11 and the load driving chamber 21. The communication port 39 serves as an outlet of the dust collecting chamber 11.

An upward opening 37 is formed in the upper part of the dust collecting chamber 11, that is, the plate surface of the front casing 34. The opening and closing cover 37 which is rotatable and openable is coupled to the front of the opening 37. The upper portion of the rear casing 41 is provided with a user handle portion 29, the lower portion is provided with a rolling wheels 27.

On the other hand, in the dust collecting chamber 11, a pair of dust collecting parts 51 which separates and collects dust from the dust-containing air flowing in through the suction port are received retractably. The dust collecting unit 51 is supported by the fixing plate 45 coupled to the partition 40. The dust collecting unit 51 will be described later in detail with reference to FIGS. 4 to 6.

The expansion pipe 7 has a corrugated pipe 9 that is stretchable along the longitudinal direction, and an extension pipe 8 that is engaged with the corrugated pipe 9. The hand grip 10 is formed in the mutual coupling area | region of these corrugated pipe 9 and the extension pipe 8. As shown in FIG. The brush 15 is coupled to the end of the extension pipe 8 to contact the floorboard or carpet in the room. The bottom surface of the brush 15 is formed with an inlet (not shown) extending along the longitudinal direction thereof.

On the other hand, reference numeral 25 is a code wound in the back casing 41 and can be withdrawn.

4 is a partially enlarged front sectional view of FIG. 3, which illustrates a dust collecting chamber in detail, and FIG. 5 is an exploded perspective view of FIG. 4. As can be seen in these figures, in the dust collecting chamber 11, a pair of dust collectors 52 and 62 and an upper cover 71 which are coupled to the upper part of the dust collectors 52 and 62 so as to be opened and closed. ) Is accommodated. The dust collecting units 52 and 62 and the upper cover 71 which are mutually coupled to each other are supported on the fixing plate 45 coupled to the partition 40. The upper cover 71 is formed with guide ducts (75, 78 and 82 in Fig. 6) for guiding the air in the dust collecting portions 52 and 62 to the communication port 39 formed in the partition 40.

The pair of dust collectors 52 and 62 are arranged in parallel to the left and right and are separated from each other. Hereinafter, for convenience of description, the left side of the drawing is called the first dust collector 52 and the right side is the second dust. The collection part 62 is called. These dust collectors 52 and 62 are provided with the dust collectors 53 and 63, respectively, and the dust collectors 53 and 63 are provided with either one of the filter 55 and the dust separation tube 65. The dust collectors 53 and 63 have a substantially cylindrical shape which is open upward and are formed in parallel with each other in parallel.

Hereinafter, the dust container which forms the 1st dust collection part 52 is called the 1st dust container 53, and the other side is called the 2nd dust container 63. As shown in FIG. These first and second dust container (53, 63) is integrally simple injection molding.

On the other hand, the filter 55 also has a cylindrical shape and is disposed coaxially with the first dust container 53 in the first dust container 53. A plurality of fine intake holes 55 are formed in the circumferential surface of the filter 55, and an exhaust hole 56 is formed in the upper surface thereof. The exhaust hole 56 communicates with the front intake port 77 of FIG. 6 of the central flow path 78 of FIG. 6, which forms a guide duct described later in detail. In the upper region of the filter 55, a spiral engaging groove 57 is formed along the circumferential direction thereof. The engaging groove 57 engages the edge of the front suction port 77 of the central flow path 78 forming the guide duct, whereby the filter 55 is fixable to the upper region of the first dust container 53. . The lower portion of the filter 55 is provided with a dirt blocking rib 59 that protrudes in the radial direction to form a downward inclination angle.

The dust separator tube 65 is also disposed coaxially with the second dust container 63 in the second dust container 63. The dust separation tube 65 has a conical shape and is arranged such that the upper region has a larger cross-sectional radius than the lower region. A coupling groove 67 recessed along the circumferential direction is formed in the upper region of the dust separation tube 65. The engaging groove 67 is engaged with the edge of the front inlet (80 in FIG. 6) of the rear flow path (81 in FIG. 6) forming the guide duct, whereby the dust separation tube 65 is the second dust container It may be fixed to the upper region of the (63).

The fixed plate 45 includes a vertical plate portion 46 fixedly coupled to the partition 40, and a horizontal plate portion extending in a direction perpendicular to the plate surface of the vertical plate portion 46 from the lower end of the vertical plate portion 46 ( 48). A plurality of screw fastening grooves 47 are formed in the plate surface of the horizontal plate portion 46. The fixing plate 45 may be fixed to the partition wall by a screw (not shown) that passes through the screw fastening groove 47 and is fastened to the partition wall 40. Such fastening means may have various shapes such as a fastening hook and a hook groove. The horizontal plate portion 46 is provided with a receiving groove 49 for accommodating and fixing the first dust container 53 and the second dust container 53.

On the other hand, the upper cover 71 is coupled to the upper portion of the dust collecting portion 52, 62, as shown in Figure 6, the front flow path 75, the central flow path 78 and formed along the plate surface direction, A rear flow path 81 is provided. The coupling portion 73 is formed in the skirt portion 72 of the upper cover 71 along the longitudinal edge thereof. Coupling groove (73) is coupled to the edge of the first dust container (53) and the second dust container (63), whereby the upper cover (71) is coupled to the top of the dust collector (52, 62) to open and close do.

The front flow passage 75 has a front intake port 74 corresponding to the intake port 36 of the cleaning main body 33, and allows the dust introduced through the front intake port 74 to flow out to the first dust container 53. It has a front exhaust port 76. The front exhaust port 76 is formed in an oblique direction with respect to the center line of the first dust container 53. As a result, the dust-containing air flowing through the front passage 75 flows in the diagonal direction with respect to the first dust container 76.

The central channel 78 guides air introduced through the opening of the first dust container 53 to the second dust container 63. Here, the central intake port 77 of the central duct 78 communicates with the upward opening of the first dust container 53, and the central exhaust port 79 is formed diagonally with respect to the body of the second dust container 63. have. As a result, the air flowing in the central channel 78 flows in the diagonal direction with respect to the second dust container 63.

The rear flow passage 81 guides the air flowing out through the upward opening of the second dust container 63 to the communication port 39 formed in the discharge port, that is, the partition wall 40. The rear flow passage 81 protrudes upward with respect to the plate surface of the upper cover 71, the rear intake port 80 corresponds to the opening of the second dust container 63, and the rear exhaust port 81 is the partition 40. It corresponds to the communication port 39 formed in the.

On the other hand, in the drawing, the guide ducts forming the front passage 75, the central passage 78 and the rear passage 81 are formed integrally with the upper cover 71. However, the configuration in which the guide duct and the upper cover 71 are integrally formed may have difficulty in manufacturing. Therefore, it is possible to manufacture a separate duct member to form a guide duct, to be configured to be coupled to the lower portion of the upper cover (71). At this time, the mutual coupling of the upper cover 71 and the guide duct member can be simply fastened using a hook and a hook groove.

In the vacuum cleaner 33 of the present invention having such a configuration, the suction motor 23 is driven when power is applied from the outside. Then, as described with reference to FIG. 2 of the related art, air in the cleaning main body 33 is forcedly circulated, whereby the interior of the cleaning main body 33 is in a high vacuum state. In this case, a pressure difference occurs between the inside of the cleaning body 33 and the outside thereof, and air is sucked in through the inlet of the brush 15. At this time, when the brush 15 is brought into contact with the surface to be cleaned, for example, a carpet or a sheet, air containing dust is sucked in through the inlet of the brush 15.

As such, the dust-containing air to be sucked passes through the expansion pipe 7 and flows into the suction port 36 of the cleaning main body 33. The dust-containing air flowing into the suction port 36 first flows along the front passage 75 and flows into the first dust collection unit 52. At this time, the dust-containing air flows in an oblique direction with respect to the first dust container 53, thereby forming a vortex air flow falling downward along the circumferential direction of the first dust container 53 with respect to the filter 55. . By such a swirling air stream, relatively large dust contained in the air is separated from the air by centrifugal force and falls.

On the other hand, the falling downward vortex airflow starts an inverted upward movement at the bottom surface of the first dust container 53, thereby forming an upward airflow having a relatively small rotation radius. Thus, after passing through the plurality of intake holes 54 formed on the circumferential surface of the filter 55, the gas flows into the intermediate flow path 78 through the upper opening of the first dust container 53. At this time, piggybacking on the rise of air also raises relatively large dust collected on the bottom surface of the first dust container 53. Relatively large dusts among these rising dusts are blocked by the dirt blocking ribs 59 and are lowered and collected again. And, most of the remaining dust does not pass through the intake hole 54 of the filter 55 and falls downward. However, dust smaller than the intake hole 54 of the filter 55 flows into the upward airflow and flows into the intermediate passage 78 through the opening of the first dust container 53.

The dust-containing air flowing along the intermediate passage 78 flows in an oblique direction with respect to the second dust container 63 of the second dust collector 62. Therefore, the air flowing into the second dust container 63 also forms a vortex air stream that rotates along the circumferential direction of the dust separation tube 65 and falls downward. At this time, dust having a relatively small particle size is separated from the vortex air stream by centrifugal force. This dust is collected by falling to the lower region of the second dust container (63).

On the other hand, the falling downward vortex airflow starts an inverted upward movement at the bottom surface of the second dust container 63, and forms an upward airflow having a relatively small rotation radius. At this time, the dust collected on the bottom surface of the second dust container 63 also rises as the air rises. Most of these dusts do not pass through the opening of the lower region of the relatively small dust separation tube 65, and fall back to the lower region of the second dust container 63 and are collected. On the other hand, the rising air flows into the rear passage 81 through the upper opening of the dust separation tube (65).

The air introduced into the rear flow passage 81 is guided along the flow passage and flows into the load driving chamber 21 through the discharge port 39 of the partition 40. At this time, the air passing through the outlet 39 is clean air from which dust is removed, and the air is discharged to the outside through the outlet 26 formed in the rear casing 41 through the suction motor 23.

As described above, according to the present invention, dust and the like contained in the air sucked through the suction port 36 are sequentially collected and collected in the dust collecting chamber 11 by the centrifugal separation method. At this time, the dust having a relatively large particle size is separated and collected in the first dust collection unit 52, and the dust having a relatively small particle size is separated water in the second dust collection unit 62. Therefore, according to the particle size of the dust sequentially collected by separating the secondary, it is possible to maximize the filtering effect.

On the other hand, in the present invention, more precisely in the dust collecting chamber 11, when the dust and the like is filled in the first and second dust container (53, 63), the opening and closing cover 38 of the cleaning main body 33 is opened The dust collecting unit 51 can be taken out simply. Since the dust collecting unit 51 is accommodated and seated in the receiving groove 49 of the horizontal plate portion 48 of the fixed plate 45, when the user provides a predetermined pressure, the dust collecting unit 51 is easily separated from the receiving groove 49. It is possible. After opening the upper cover 71 of the collected dust collecting unit 51, the user may discard the dust collected therein, and then withdraw the cover into the opening and closing cover 38 again.

Therefore, in the vacuum cleaner 31 of the present invention, it is possible to eliminate the dust bag which has conventionally been periodically replaced. Thereby, the trouble of the cumbersome change of the dust bag and the maintenance cost increase resulting from the replacement of the dust bag are eliminated.

Meanwhile, in the present invention, another embodiment for maximizing the filtering effect is illustrated in FIG. 7. The configuration of the dust collector 51 seen in the drawing is the same as that of the above-described embodiment. However, the bottom surface of the first dust container 53 protrudes upward toward the filter 55. The protrusion 93 has a tubular shape having a cross-sectional radius of approximately the same size as the cross-sectional radius of the filter. On the other hand, the protrusion 93 can be configured such that the lower region extends in a radial direction than the cross section of the upper region.

Such a configuration can prevent the swirling airflow flowing into and falling into the first dust container 53 and the airflow rising from the bottom surface of the first dust container 53 from being mixed with each other. As a result, the problem of turbulence that may occur in the filter lower region is eliminated, and the rotational force of the downward vortex airflow is further increased. Therefore, in the first dust collection unit 52 according to the present embodiment, dust having a large particle size can be separated and collected more effectively.

In the above, the preferred embodiments of the present invention have been shown and described, but the present invention is not limited to the detailed embodiments, and various modifications can be made by those skilled in the art without departing from the spirit of the invention within the claims. Of course it is possible.

As described above, according to the present invention, by removing the dust bag (Dust Bag), there is provided a vacuum cleaner that can eliminate the hassle caused by periodic replacement and at the same time reduce the maintenance cost. Such a vacuum cleaner may perform centrifugal separation of the dust-containing air flowing through the suction port to perform highly efficient filtering.

Claims (8)

In the vacuum cleaner, A dust collecting chamber having an inlet and an outlet; Means for sucking outside air into the dust chamber through the suction port; A plurality of dust collecting units formed biaxially in the dust collecting chamber and sequentially centrifuging the dust-containing air flowing into the suction port; And And a guide duct for guiding air introduced through the suction port to the discharge port through the plurality of dust collecting units. Each dust collector, Dust container; And A dust blocking means for preventing backflow of dust collected in the dust container, and disposed in an upper region of the dust container, and including dust separating means for separating the dust by rotating the incoming air downward in a circumferential direction. Cleaner characterized in that. The method of claim 1, The plurality of dust collectors comprises at least two dust collectors arranged in parallel to each other; The suction port corresponds to any one side of the at least two dust collector, the discharge port is characterized in that corresponding to the other side. The method of claim 1, The guide duct, A front flow passage communicating the one side dust collecting unit corresponding to the suction port; A central flow passage communicating the one dust collecting unit with the other dust collecting unit; And And a rear flow passage communicating the other dust collecting unit with the outlet. delete The method of claim 1, The dust separation means on one side is a cylindrical filter coaxial with the dust container; And a plurality of fine intake holes are formed on the circumferential surface of the filter, and exhaust holes corresponding to the front communication holes of the central flow path are formed on the upper surface thereof. The method of claim 5, And a lower surface of the dust container protrudes upwardly to face the filter. The method of claim 1, And the dust separating means of the other dust collecting unit is a conical dust separating tube disposed coaxially with the dust collecting container. The method of claim 1, The dust collecting chamber and the load driving chamber in which the air suction means are further included include a cleaning main body divided into partition walls; And said outlet is formed in said partition wall.