KR20040107947A - Dust collecting apparatus of vacuum cleaner having two cyclones - Google Patents

Abstract

PURPOSE: A double cyclone dust collecting apparatus of a vacuum cleaner is provided to improve the suction efficiency and precipitation efficiency by sequentially and separately precipitating dust and dirt depending on the size of the dust and dirt. CONSTITUTION: A double cyclone dust collecting apparatus(20) of a vacuum cleaner comprises a lower cyclone body(40) having an intake port(41) and an exhaust port, an upper cyclone body(30) placed in the upper portion of the lower cyclone body, a dust and dirt collecting case(25) removably combined with the lower cyclone body, and an air passage formed inside the upper cyclone body and the lower cyclone body to circulate the air containing the dust and dirt sucked from the exterior. Dust and dirt contained in the air sucked through an intake port(41) are removed firstly by the lower cyclone body. The fine dust remaining in the air is secondly removed by the upper cyclone body.

Description

DUST COLLECTING APPARATUS OF VACUUM CLEANER HAVING TWO CYCLONES}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cyclone dust collector of a vacuum cleaner, and more particularly, to a double cyclone dust collector for collecting dust and dirt (hereinafter, collectively referred to as foreign matter) contained in air by centrifuging a plurality of times.

1 is a partially enlarged longitudinal sectional view of a vacuum cleaner, showing a conventional cyclone dust collector. The cyclone dust collector is usually retractably received in the apparatus accommodating portion 10 of the cleaning body 3 (see Fig. 2). At the rear of the apparatus accommodating part 10, a suction side connection port (see 13 in FIG. 2) for introducing air containing foreign substances and a discharge side for discharging clean air separated from the cyclone dust collector 100. The connection port (see 14 in Fig. 2) is exposed.

Referring to the drawings, a conventional cyclone dust collector includes a cyclone body 110 for centrifuging foreign matter contained in air, and a filter 130 mounted in the cyclone body 110. The cyclone body 110 includes an intake port 113 and an exhaust port 115, and includes a foreign matter container 120 coupled to a lower portion thereof. Intake port 113 is formed in a tangential direction on the side of the cyclone body 110, it is coupled to the suction side connection port 13 of the cleaning body (3). The exhaust port 115 is provided at the center of the upper surface of the cyclone body 110, and is coupled to the discharge side connection port 14 of the cleaning body (3).

According to this configuration, the air flowing along the suction side connection port 13 is discharged into the cyclone body 110 through the intake port 113 to form a swirling airflow. At this time, the foreign matter contained in the air is centrifuged and collected in the foreign matter collector (120). Here, the foreign matter container 120 is detachable with respect to the cyclone body 110, it is possible to remove the foreign matter collected therein.

However, the fine dust centrifuged in the cyclone body 110 is included in the airflow exhausted through the exhaust port 115. A filter 130 is installed on an opening surface of the exhaust port 115 to filter fine dust included in the airflow discharged through the exhaust port 115. The filter 130 has a plurality of fine passage holes and is disposed in an upright direction in the cyclone body 110. As a result, the air passing through the exhaust port 115 is discharged to the outside through the discharge side connection port 14 after fine dust is removed.

By the way, in the cyclone dust collector 100 of the conventional vacuum cleaner, since a single filter is also built in a single cyclone body, a large amount of fine dust centrifuged in the cyclone body is piggybacked around the filter to escape. In the case of distribution or severe, there is a problem of blocking the micro-hole of the filter. This interrupts the smooth flow of air, lowers the suction efficiency of the vacuum cleaner, and also causes noise.

In the cyclone dust collector 100 of the conventional vacuum cleaner, since there is also a large amount of fine dust filtered by the filter, there is an inconvenience of frequent cleaning or replacement of the filter.

An object of the present invention, in consideration of the conventional problems, while circulating the suction air in the inside of the foreign matter contained therein, according to the size of the vacuum cyclone double cyclone dust collection to improve the suction efficiency and dust collection performance To provide a device.

Another object of the present invention is to provide a double cyclone dust collector of a vacuum cleaner which is easy to maintain by reducing the number of cleaning or replacement of the filter.

1 is a partially enlarged longitudinal sectional view of a vacuum cleaner having a conventional cyclone dust collector;

2 is a perspective view of an upright vacuum cleaner having a double cyclone dust collector according to the present invention;

3 is an enlarged view illustrating main parts of FIG. 2 and illustrates an appearance of the present dual cyclone dust collector;

4 is an exploded view of FIG. 3;

5 is a longitudinal sectional view of FIG. 3;

6 is a plan view of the lower cyclone body of FIG.

7 is an exploded perspective view of the upper cyclone body,

8 is a combined bottom view of FIG. 7, and

FIG. 9 is a partially enlarged cross-sectional view of FIG. 7, which shows the structure of the dust amount detecting unit in more detail.

<Description of the symbols for the main parts of the drawings>

3: Cleaning base 13: Suction side connection port

14 outlet port 20: double cyclone dust collector

25: dust container 30: upper cyclone body

31: body 32: bottom plate

34, 44 center hole 35: casing

36: upper inlet 37: display window

40: lower cyclone body 41: intake port

42: exhaust port 45: lower passage

50: air passage 55: upper grill

60: lower grill 70: filter

75: coupling groove 77: operation knob

80: dust detection unit

According to the present invention, the lower cyclone body having an intake port and an exhaust port, and separates and collects the foreign matter contained in the air sucked through the intake port first; An upper cyclone body having a main body for separating the fine dust contained in the primary foreign matter separated air supplied from the lower cyclone body into a secondary, and a casing covering the outer surface of the main body to form a fine dust collecting chamber; By the dual cyclone dust collector of the vacuum cleaner comprising a; and an air passage for guiding the secondary dust separated from the upper cyclone body into the upper cyclone body and the lower cyclone body to discharge through the exhaust port; Is achieved.

The lower cyclone body may have the intake port and the exhaust port formed at regular intervals on a sidewall thereof; A lower outlet hole is provided on one side of the lower central hole and the lower central hole on the upper plate; It is possible to form a configuration in which the lower grill is built in the standing direction.

The main body of the upper cyclone body, a bottom plate formed with an upper central hole and the upper inlet corresponding to the lower central hole and the lower outlet of the lower cyclone body; And an upper grill installed in an upright direction in the upper central hole. At this time, the casing of the upper cyclone body is detachably coupled to the body; Detachment means of the casing and the main body, the engaging groove which is opened in the upper plate of the casing; It is preferable to simply comprise a; operating knob is installed on the upper end of the upper grill and exposed to the outside through the coupling groove portion, the rotatable operation knob between the position and the release position of the coupling groove portion.

The lower cyclone body, on the other hand, by forming the suction air flowing into the intake port as a swirling air flow to centrifuge the foreign matter primarily; The foreign matter container for collecting the foreign matter to be centrifuged in the lower portion can be detachably configured.

Preferably, the upper cyclone body further includes a filter coupled to an outer surface of the upper grill, wherein the upper cyclone body further includes a dust amount detecting unit capable of detecting an amount of dust collected and collected in the upper cyclone body. More preferred.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. In this case, the same reference numerals are given to the same configurations and names described above with reference to FIG. 1.

2 is a perspective view of an upright type vacuum cleaner having a double cyclone dust collector according to the present invention. In the upright type cyclone vacuum cleaner 1, as shown in the figure, the double cyclone dust collector 20 according to the present invention is retractably accommodated in the cleaning main body 3. A vacuum generator (not shown) is built in the cleaning main body (3), and a suction brush (5) for suctioning foreign substances with air is installed at the bottom thereof.

In the central portion of the cleaning base 3, the device accommodating part 10 for accommodating the double cyclone dust collector 20 is recessed inward. On the back of the apparatus accommodating portion 10, a suction side connection port 13 connected to the suction brush 5 and a discharge side connection port 14 connected to the vacuum generator are provided.

3 is an enlarged perspective view of the main portion of FIG. 2, showing the appearance of the present dual cyclone dust collector, and FIG. 4 is an exploded view of FIG. 3. 5 is a longitudinal cross-sectional view of FIG. 3, which illustrates the configuration of a double cycle dust collector according to the present invention in detail. As can be seen from these figures, the present double cyclone dust collector 20 is disposed above the lower cyclone body 40 and the lower cyclone body 40 having the intake port 41 and the exhaust port 42. The upper cyclone body 30 is provided, and the foreign matter container 25 detachably coupled to the lower cyclone body (40). Inside the lower cyclone body 40 and the upper cyclone body 30 is provided with an air passage 50 for circulating air containing foreign matter sucked from the outside.

The lower cyclone body 40 has a cylindrical shape which is downwardly opened, and the intake port 41 and the exhaust port 42 are formed at regular intervals on the outer surface thereof. The intake port 41 is provided in the tangential direction toward the inside, and is coupled to the suction side connection port 13 of the device accommodating part 10. Intake air discharged to the inside through the intake port 41 forms a swirling air flow. The exhaust port 42 is provided in the normal direction and is coupled to the discharge side connection port 14 of the apparatus accommodating part 10.

In the upper plate 40 'of the lower cyclone body 40, a lower central hole 44 opened upward in the center portion thereof is formed. The lower central hole 44 and the exhaust port 42 are connected through the lower passage 45 to communicate with each other. The lower passage 45 is provided in the upper plate 40 'of the lower cyclone body 40 in the radial direction along the lower surface thereof. The lower passage 45 guides the air exhausted through the lower central hole 44 to the exhaust port 42.

In the upper plate 40 'of the lower cyclone body 40, a lower outlet 46 is formed in the rear region thereof. Lower outlet 46 is provided in a pair of left and right on the outside of the lower central hole (44). Through the lower outlet 46, the air separated primarily from the foreign matter in the lower cyclone body 40 is discharged and introduced into the upper cyclone body 30 as described later in detail.

Inside the lower cyclone body 40, the grill 60 is embedded in the standing direction. The grill 60 includes a cylindrical grill portion 61 and an upper flange portion 63 and a lower flange portion 67 provided at upper and lower ends of the grill portion 61, respectively. On the circumferential surface of the grill portion 61, a plurality of slits 62 are formed which are parallel in the vertical direction. The upper flange portion 63 extends upward from the top of the grill portion 61 in a conical shape, and is coupled to the inner surface of the lower cyclone body 30. To this end, the end portion of the upper flange portion 63 is bent downward 65, the coupling rib 65 is formed on the upper inner wall surface of the lower cyclone body (30) to be engaged with the bent portion (65). The lower flange portion 67 extends downward from the lower end of the grill portion 61 in the vertical shape.

In the lower cyclone body 40, the intake air discharged to the inside through the intake port 41 forms a swirling air flow around the grill 60. At this time, the foreign matter contained in the suction air is centrifuged primarily from the swirling air stream and accumulated in the foreign matter container 25. The foreign matter container 25 is detachably coupled to the lower portion of the lower cyclone body 40, and separated from the lower cyclone body 40 to remove foreign matter accumulated therein. A coupling groove 28 is formed in the upward opening of the foreign matter container 25 along its longitudinal edge, and the lower end 48 of the lower cyclone body 40 is tightly coupled to the coupling groove 28.

The air from which the foreign matter is first separated in the lower cyclone body 40 passes through the grill 60 and is exhausted upward. Here, the slit 62 of the grill 60 has a constant size and blocks the passage of foreign particles of relatively large particles contained in the air flow upwardly exhausted. However, the grill 60 does not block the passage of fine dust below a certain size. Therefore, air containing fine dust is supplied into the upper cyclone body 30.

6 is an exploded perspective view of the upper cyclone body. As can be seen in this figure, the upper cyclone body 30 includes a main body 31 which separates fine dust and a casing 35 which covers the upper part of the main body 31 so as to be openable and closed. The main body 31 is composed of a bottom plate 32 and an upper grill 55 provided at the center of the bottom plate 32. The bottom plate 32 of the main body 31 is formed with an upper inlet 36 through which air from the lower cyclone body 40 flows and an upper central hole 34 through which the air inside is exhausted.

The upper grill 55 is provided in the upright direction in the upper central hole 34 of the bottom plate 32. A plurality of air outlets 56 are formed on the outer surface of the upper grill 55, and these air outlets 56 may be configured in a slit shape, similar to the lower grill 60 of the lower cyclone body 40. The upper grill 55 having a plurality of slits 56 can perform a filtering function on its own, but in order to effectively filter fine dust, it is preferable to combine the outer filter 70. On the outer surface of the filter 70, it is also advantageous to couple the porous filtering member 73 which is easily removable to be cleaned.

The airflow exhausted through the upper grille 55 and the filter 70 coupled to the outer surface of the lower grille 45 of the lower cyclone body 40 through the upper passage 34 formed inside the upper grille 55. Flows into). Accordingly, the upper and lower cyclone bodies 30 and 40 have a circulation path of air, that is, air sucked through the intake port 41 and the lower outlet 46 and the upper inlet 36 and the upper passage 34. ) And an air passage 50 which is discharged to the exhaust port 42 after circulating along the lower passage 45. Here, the upper grill 55 is simply integrally formed at the injection molding of the bottom plate (32).

On the other hand, the casing 35 is manufactured in the size which can enclose the bottom plate 32 of the main body 31 in the downward cylindrical shape. The casing 35 has a central portion of the upper surface of the casing 35 having a downward depression 38, and a coupling groove 75 is provided in the depression 38. The coupling groove 75 is formed as a long hole 76 extending in one direction, and is coupled to the operation knob 77 installed on the upper grill 55 of the main body 31.

The operation knob 77 is rotatably installed at the upper end of the upper grill 55, and the head portions 78 protrude outward in the radial direction, respectively. The head portion 78 is only accommodated in one direction in the coupling groove portion 75 formed in the casing 35. The operation knob 77 may be engaged by engaging the head portion 78 in one direction in the coupling groove portion 75 and then rotating it in the normal and reverse direction. By the action of the coupling groove 75 and the operation knob 77 it is possible to couple the casing 35 to the upper portion of the main body 31 to be openable. The casing 35 coupled to the upper portion of the main body 31 forms a fine dust storage chamber for collecting fine dust. Here, the operation knob 77 may be formed in a structure fixed to the upper grill (55). That is, the injection molding is integrally possible with the bottom plate 32 and the upper grill 55.

The double cyclone dust collector 20 of the present vacuum cleaner having such a configuration can be pulled out in one direction in the apparatus accommodating portion 10 of the cleaning body 3. Here, the foreign material container 25 is withdrawn and withdrawn in a state coupled to the lower cyclone body 40, the upper cyclone body 30 is integrally or separately coupled to the lower cyclone body (40). When the lower cyclone body 40 is accommodated, the intake port 41 and the exhaust port 42 are coupled to the suction side connection port 13 and the discharge side connection port 14 respectively exposed to the device accommodation portion 10. do. In order to easily settle the upper cyclone body 30 on the upper portion of the lower cyclone body 40, it is preferable to form a settled groove in the upper plate (40 ') of the lower cyclone body (40).

When the operation of the apparatus is turned on, the vacuum generator starts driving. At this time, the air containing the foreign matter is sucked through the suction brush 5 is discharged to the intake port 41 of the lower cyclone body 40 through the suction side connection port (13). Air containing foreign matter discharged to the intake port 41 forms a swirling air flow in the lower cyclone body 40, whereby the foreign matter is centrifuged primarily. Here, the foreign matter is centrifuged is accumulated in the foreign matter container (25).

After the foreign matter is separated, the air passes through the grill 50 and then rises to the upper cyclone body 30 through the lower outlet 46 and the upper inlet 36. At this time, the upper grill 60 is first centrifuged to block the passage of foreign matter of relatively large size floating.

Meanwhile, the air discharged into the upper cyclone body 30 moves toward the upper grill 55 in which the slit 56 is formed. At this time, the filter 70 interposed in the moving section of the air to filter the fine dust contained in the air secondary. The fine dust to be filtered falls onto the bottom plate 32 of the main body 31 and is accumulated in the fine dust storage chamber formed by the casing 35. The air filtered to the fine dust is exhausted through the slit 56 of the upper grill 55 and then discharged to the exhaust port 42 via the upper passage 34 and the lower passage 45.

As time passes, the amount of foreign matter accumulated inside the lower cyclone body 40 and the upper cyclone body 30 gradually increases. Then, foreign particles of relatively large particles separated in the lower cyclone body 40 are removed by separating the foreign matter container 25. Here, in order to withdraw the lower cyclone body 40 and the foreign matter container 25 from the device receiving portion 10, the withdrawal lever indicated by reference numeral 28 in FIG. That is, by turning the take-out lever 28 to one side, it is possible to take out the foreign matter container 25 held in the device receiving portion (10).

Then, in order to remove fine dust accumulated in the upper cyclone body 30, first, the upper cyclone body 30 is taken out. Then, the casing 35 covering the main body 31 is separated. The casing 35 may be detached only by rotating the operation knob 77 so that the head 78 and the long hole 76 of the coupling groove 75 are arranged in parallel. The order of joining the casing 35 after removing the fine dust can be simply performed in the reverse of the above.

On the other hand, the upper cyclone body 30 is provided with a dust amount detection unit 80 that can visually check the amount of dust accumulated therein. FIG. 8 is a partially enlarged assembled sectional view of FIG. 6, which shows the configuration of the present dust amount detecting unit in more detail. As can be seen in this figure, the dust amount detecting unit 80 includes a case 81, an excessive dust display sphere 83 coupled with the case 81, and an excessive dust display sphere 83 in the case 81. The standard dust indicator 85, which can move the shielding position and the exposure position of the standard dust indicator, and a spring for elastically pressing the standard dust indicator 85 in the shielding position.

The case 81 is made of a transparent material that is transparent to the inside, and an air outlet 82 is formed at an end thereof. Excessive dust indicator 83 is coupled to the lower portion of the case 81, the pressure inlet 84 is formed on the bottom surface. The excess dust indicator 83 has a display portion 86 extending upward in the longitudinal direction of the case 81. The standard dust indicator 85 accommodates the display portion 86 of the excessive dust indicator 83 inside the case 81. Then, a spring 87 is provided between the standard dust indicator 85 and the other opening of the case 81.

The dust amount detection unit 80 is fixed to the inner front of the upper cyclone body (30). Brackets 91 and 92 are provided on the inner front surface of the upper cyclone body 30. At this time, the pressure inlet 84 of the standard dust indicator 85 is in communication with the interior of the upper cyclone body 30, the air outlet 82 of the case 81 is installed to communicate with the outside atmosphere. The display window 37 is opened on the front surface of the upper cyclone body 30 to which the dust amount sensing unit 80 is fixed. The user can observe the display state of the dust amount detecting unit 80 through this display window 37.

In such a configuration, for example, when the amount of dust collected in the upper cyclone body 30 is less than or equal to the reference amount, the air introduced through the air passage hole 36 passes through the filter 70 and then passes through the upper passage 33. The exhaust port 41 is smoothly exhausted through the exhaust port 41. In this state, the inside and the outside of the upper cyclone body 30 are maintained at almost the same pressure. At this time, the dust amount detecting unit 80 displays the standard dust through the display window 37 at the position where the standard dust display sphere 85 shields the excess dust display sphere 86 by the elastic force of the spring 87. Sphere 85 is exposed.

By the way, when the amount of dust is more than the reference amount, that is, when the amount of dust collected inside is removed, the internal pressure is relatively increased while the flow of air is disturbed. Then, the internal high pressure flows into the pressure inlet 84 of the standard dust display port 85 to pressurize the standard dust display port 85. Thus, when the standard dust indicator 85 exposes the excessive dust indicator 86, it is possible to observe the excess dust indicator 86 through the display window 37. Through this, the user recognizes that dust is excessively collected in the upper cyclone body 30, and removes the dust in the upper cyclone body 30 by drawing it from the device accommodating part 10.

As described above, according to the present invention, while circulating the air sucked through the suction port to the inside of the vacuum cleaner is a dual cyclone that can be separated and sequentially collected according to the size to improve the suction efficiency and dust collection performance A dust collector is provided.

In the double cyclone dust collector of the vacuum cleaner, the grills are respectively built in the upper and lower cyclone bodies, and each grill performs a function of filtering the corresponding foreign matter or fine dust. The amount is reduced. This makes it possible to reduce the number of cleaning and replacement of the filter, which is convenient for maintenance.

The double cyclone dust collector of the vacuum cleaner can also remove the foreign matter and fine dust collected in each cyclone body by separating the foreign matter container and the casing, and can be removed very easily.

Claims (7)

A lower cyclone body having an intake port and an exhaust port, for separating and collecting the foreign matter contained in the air sucked through the intake port primarily; An upper cyclone body having a main body for separating the fine dust contained in the primary foreign matter separated air supplied from the lower cyclone body into a secondary, and a casing covering the outer surface of the main body to form a fine dust collecting chamber; And And an air passage for guiding the second dust separated from the upper cyclone body to the inside of the upper cyclone body and the lower cyclone body and discharging it through the exhaust port. The method of claim 1, wherein the lower cyclone body, The intake port and the exhaust port are formed at regular intervals on the sidewalls; A lower outlet hole is provided on one side of the lower central hole and the lower central hole on the upper plate; Dual cyclone dust collector of the vacuum cleaner, characterized in that the lower grill is built in the standing direction. The body of the upper cyclone body, A bottom plate having an upper central hole and an upper inlet corresponding to the lower central hole and the lower outlet of the lower cyclone body; And Dual cyclone dust collector of the vacuum cleaner, characterized in that it comprises an upper grill which is installed in the upright direction in the upper central hole. The method of claim 3, wherein The casing of the upper cyclone body is detachably coupled to the body; Detachment means of the casing and the main body, A coupling groove portion opened in the upper plate of the casing; Double cyclone dust collection of the vacuum cleaner is installed on the top of the upper grill and exposed to the outside through the coupling groove portion, the operation knob rotatable between the position of the coupling groove and the release position of the coupling groove; Device. The method of claim 1 or claim 2, wherein the lower cyclone body, Forming inhalation air flowing into the intake port as a swirling air flow to centrifugally separate foreign matters; Dual cyclone dust collector of the vacuum cleaner, characterized in that the foreign matter container for collecting the foreign matter to be centrifuged in the lower portion is detachably coupled. According to claim 1 or 3, wherein the upper cyclone body, Dual cyclone dust collector of the vacuum cleaner, characterized in that it further comprises a filter coupled to the outer surface of the upper grill. The method of claim 6, And a dust amount detecting unit capable of detecting an amount of dust collected and separated in the upper cyclone body.