KR20080076045A - Multi cyclone dust collecting apparatus having filter - Google Patents

Abstract

A multi cyclone dust collecting apparatus having a filter member is provided to pass the fine dust contained in the air toward an outer wall of a second cyclone and to filter the air which is discharged from a plurality of second cyclones by filter members made up of a sponge filter and a micro filter, thus improving suction and dust collection efficiency in the fine dust. An air containing impurities is introduced to a first cyclone chamber through a first air inlet(121). The introduced air is guided by a guide member(125) and is lifted up in the first cyclone chamber. Relatively large impurities are introduced toward an outer wall(123) of a first chamber and are stacked in a first impurity collecting room(151) through an impurity discharging hole(171). The ascending air current is contacted with a closed cover(170) to form the descending air current and is introduced to an air discharging pipe(126). The air which is introduced to the air discharging pipe is vented from an air discharging device(124), radially sprayed by a guide cone(181), guided by an inflow guide passage(182), and flowed to each cyclone cone(140) through second air inlet holes(141). The flowed air ascends in a second cyclone chamber(142) to form a swirling current. The fine dust contained in the air is introduced toward an outer wall(143) of a second cyclone and is stacked in a second impurity collection room(152). Filter members(300) are used by depositing a sponge filter and a micro filter.

Description

Multi cyclone dust collecting apparatus having filter member

1 is a perspective view of a multi-cyclone dust collector equipped with a filter member according to an embodiment of the present invention,

Figure 2 is an exploded perspective view of the multi-cyclone dust collector of Figure 3,

3 is a bottom perspective view of the multi-cyclone body of FIG.

Figure 4 is an enlarged perspective view of the outflow guide cover of Figure 4,

FIG. 5 is a cross-sectional view taken from the line VV of FIG. 1.

* Description of Signs for Main Parts in Drawings *

110. The multi-cyclone body 120. The first cyclone body

122. First cyclone chamber 123. First chamber outer wall

124. Air outlet 130. Second cyclone body

140. Cyclone Cone 142. Second Cyclone Chamber

143. Outer wall of the second chamber 150. Sewage collection room

170. Airtight cover 171. Sewage outlet

180. Outlet Guide Cover 190. Outlet Cover

300: filter member

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner, and more particularly, to a multi-cyclone dust collector which filters at least two stages of dust on a surface to be sucked such as air by using a centrifugal force.

In general, the vacuum cleaner includes a bottom brush for sucking dust on the surface to be cleaned together with air, a vacuum cleaner main body including a motor driving chamber provided with a vacuum source and a cyclone dust collector.

The cyclone dust collector has a structure in which air including dust introduced from the floor brush is formed to form a swirling air, and the dust is separated from the air by centrifugal force to be collected, and then the clean air is discharged to the motor drive room. Recently, in order to improve dust collection efficiency, a multi-cyclone dust collector in which dust contained in air is separated into two or more stages and one or more secondary cyclones are disposed has been introduced.

Prior art related to multicyclones is Dyson Patent Application Publication Nos. WO02 / 067755, WO02 / 067756. However, the upstream cyclone, which is the first cyclone, and the downstream cyclone, which is the second cyclone, are disposed up and down, so that the overall height of the dust collector is large, which is mainly applied to an upright cleaner and difficult to apply to a canister cleaner.

In order to solve this problem, as disclosed in the applicant's patent application No. 2003-62520, by installing the second cyclone to overlap on the outer circumference of the first cyclone, the overall height can be reduced, but the size of the cleaner Efforts have been made to reduce the height of the dust collector. In addition, since the outside air flows into the upper portion of the first cyclone and is discharged to the upper portion of the second cyclone, the upright cleaner has a long flow path from the floor brush to the air inlet of the first cyclone of the cyclone dust collector, The flow path from the air outlet to the motor drive chamber installed at the bottom of the cleaner has a long problem that the suction force is lost in the pipe.

In order to solve this problem, the applicant has proposed a dust collector as disclosed in Patent Registration No. 667877.

These dust collectors shorten the length of the air flow path flowing from the floor brush to the multi-cyclone dust collector and the air flow path discharged from the cyclone dust collector to the motor drive chamber to reduce the suction force loss, and also increase the height of the entire cyclone dust collector. In short, it can be easily applied not only to upright cleaners but also to small cleaners such as canister cleaners.

By the way, such a multi-cyclone dust collector is passed through the first cyclone body and a plurality of second cyclone body sequentially and the discharge air separated from the dirt is collected into the inner space of the discharge cover finally disposed in the lower portion of the separation device and then separately It is discharged through the air outlet port formed on one side of the discharge cover as it is without passing through the filter member. Accordingly, as the fine dust contained in the discharged air is continuously sucked into the suction motor without being properly filtered, the suction motor is damaged by the fine dust.

Further, the discharged air discharged from the plurality of second cyclone bodies arranged around the first cyclone body is temporarily collected in the discharge cover and discharged to the air outlet port formed at one side of the discharge cover. In this case, as the discharge pressure by the discharge air is deflected toward the air outlet port side, a pressure loss due to the non-uniform discharge pressure is caused.

In order to solve the above problems, an object of the present invention is to provide a multi-cyclone dust collector that can improve the efficiency of fine dust collection.

Another object of the present invention is to provide a multi-cyclone dust collector which can maintain the discharge pressure of the discharged air discharged from the plurality of second cyclone body uniformly, thereby preventing the pressure loss.

In order to achieve the above object, the present invention provides a plurality of cyclone cones having a first cyclone body having an air inlet port through which external air is introduced therein and communicating therewith, and a cone shape having a smaller diameter toward an upper end thereof. A multi-cyclone body comprising a second cyclone body disposed around the cyclone body; A discharge cover coupled to a lower end of the multi-cyclone body and collecting air discharged from the cyclone cone to discharge to the outside; And, a filter member inserted into the discharge cover.

The filter member may be made of at least one, and the filter member may be made of a sponge filter and a micro filter.

The discharge cover may include an air outlet port installed at the same distance from the discharge holes of the plurality of cyclone cones to discharge the air discharged from the cyclone cone at a uniform discharge pressure.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a multi-cyclone dust collector according to the present invention will be described in detail.

The multi-cyclone dust collector 100 disclosed in FIGS. 1 to 5 includes a first cyclone having an air inlet port 127 and an air outlet 124 forming a first cyclone body 120 and an inlet 127 ′. And a second cyclone (hereinafter referred to as a cyclone cone) having an air inlet 141, a second cyclone body 140, and an outlet guide passage 183 serving as an outlet.

As shown, an inlet 127 ′ is formed under the first cyclone, and a discharge guide flow passage 183 is formed under the second cyclone. Therefore, referring to FIG. 1, the outside air is introduced into the multi-cyclone dust collector 100 through the air inlet port 127, and the clean air from which dirt is removed in two steps is discharge guide flow path 183 (FIG. 5) to the outside of the multi-cyclone dust collector 100 through the air outlet port (192). Therefore, the length of the air flow path (not shown) flowing from the suction brush (not shown) of the vacuum cleaner seated on the surface to be cleaned and the air flow path (not shown) discharged to the motor drive room (not shown) having a vacuum source. Shorter length reduces suction power loss.

In addition, referring to FIG. 2, the multi-cyclone dust collector includes a multi-cyclone body 110, a sealing cover 170, an inflow and outflow guide cover 180, and a discharge cover 190.

The multi-cyclone body 110 filters the dirt from the air in two stages by allowing the air including the dirt introduced from the outside to form a swirling airflow. The multi-cyclone body 110 is manufactured in a compact and compact, it is preferable that the injection molding integrally to reduce the assembly labor. The outer wall 112 of the multi-cyclone body 110 is provided with an air inlet port 127 for introducing external air into the multi-cyclone body 110 in one lower portion. The air inlet port 127 is installed to extend through the outer wall 112 to the first chamber outer wall 123. The multi cyclone body 110 includes a first cyclone body 120 and a second cyclone body 130.

2 and 5, the first cyclone body 120 may include a first chamber outer wall 123, a first air inlet 121, and an air outlet 124 forming the first cyclone chamber 122. Include. In the first cyclone chamber 122, the air including the dirt introduced through the air inlet port 127 forms a swirling airflow to separate a relatively large dirt from the air. The first air inlet 121 communicates with the air inlet port 127 to introduce the air introduced through the air inlet port 127 into the first cyclone chamber 122. The air outlet 124 is formed at the lower end of the first cyclone chamber 122, through which the air from which dirt is separated from the first cyclone chamber 122 is discharged.

In the center portion of the first cyclone chamber 122, the air discharge pipe 126 is installed at a predetermined height in the vertical direction so as to communicate with the air discharge port 124. Air rising from the first cyclone chamber 122 descends through the air discharge pipe 126 and exits through the air discharge port 124. The guide member 125 is continuously installed in a spiral shape inclined upwardly between the outer wall of the air discharge pipe 126 and the inner wall of the first chamber outer wall 123. The air introduced through the first air inlet 121 is swiveled by the guide member 125 while forming an upward airflow in the first cyclone chamber 122. The grill member 160 is installed at the upper end of the air discharge pipe 126 to prevent the dust separated from the air from escaping through the air discharge pipe 126.

A waste collection chamber 150 is formed between the first chamber outer wall 123 and the outer wall 112 of the multi-cyclone body 110. The waste collection chamber 150 includes a first waste collection chamber 151 in which relatively large wastes filtered from the first cyclone body 120 are collected, and a second soil in which relatively fine wastes filtered from the second cyclone body 130 are collected. And a collection room 152. The first waste collection chamber 151 and the second waste collection chamber 152 are separated by the separating partition 128.

As such, it is not necessary to secure a waste collection chamber 150 between the first cyclone body 110 and the second cyclone body 140 to provide a separate waste container, so that the entire height of the multi-cyclone dust collector 100 is provided. Reduces the effect can be applied to a variety of cleaner types.

3 and 5, the second cyclone body 130 includes a plurality of cyclone cones 140. The plurality of cyclone cones 140 secondly filters the fine dirt contained in the air introduced from the first cyclone body 120. The plurality of cyclone cones 140 are disposed about parallel to the first cyclone body 120 at regular intervals around the first cyclone body 120. Each cyclone cone 140 preferably has substantially the same size and shape.

Meanwhile, according to the present invention, since the first cyclone body 120 has a lower discharge structure, that is, the air outlet 124 is formed at the lower end, the plurality of cyclone cones 140 also have air to shorten the flow path of the air. It has a structure flowing from the lower end. To this end, each cyclone cone 140 has a conical shape, that is, a shape that is smaller in diameter toward the top.

The cyclone cone 140 includes a second air inlet 141 and a second chamber outer wall 143 forming the second cyclone chamber 142. The second air inlet 141 communicates with the air outlet 124 of the first cyclone body 120 and the inlet guide passage 182 of the outlet guide cover 180 (see FIG. 6). In the second cyclone chamber 142, the air introduced through the second air inlet 141 forms a swirling airflow to separate fine dust from the air.

On the other hand, as shown, the second chamber outer wall 143 of the cyclone cone 140 is inclined toward the outer wall 112 of the multi-cyclone body 110 toward the upper end (143a). That is, the central axis 149 of the swirling airflow of the second cyclone chamber 142 does not coincide with the central axis 129 of the swirling airflow of the first cyclone chamber 122. The fine dust separated from the air in the second cyclone chamber 142 of the cyclone cone 140 is discharged to the second waste collection chamber 152. Here, when the second chamber outer wall 143 is inclined, the dirt discharged from the second cyclone chamber 142 by centrifugation with air becomes difficult to enter the second cyclone chamber 142 again. As a result, there is an effect that the waste collection and waste discharge is easy.

In addition, since the first cyclone chamber 122 filters relatively large volumes and weights of dirt, and in the second cyclone chamber 142, relatively fine dust is filtered out, the volume of the first waste collection chamber 151 is determined. It is better to design larger than the volume of the living room 152. Therefore, the central axis 149 of the swirling airflow of the second cyclone chamber 142 is the central axis 129 of the swirling airflow of the first cyclone chamber 122 toward the upper end 143a of the second chamber outer wall 143. It is preferable to arrange | position in a direction away from it.

2 and 5, the sealing cover 170 is coupled to the upper end of the multi-cyclone body 110 to seal the inside of the multi-cyclone body 110. On the other hand, when the sealing cover 170 is coupled to the upper end of the multi-cyclone body 110, and forms the waste discharge port 171 with the upper end of the first chamber outer wall 123. The dirt separated from the air in the first cyclone chamber 122 is accumulated in the first waste collection chamber 151 through the waste discharge port 171. On the inner wall surface, that is, the lower surface of the sealing cover 170, a backflow preventing member 172 is installed to block backflow of dirt accumulated in the first waste collection chamber 151 to the first cyclone chamber 122. The backflow prevention member 172 is installed to protrude a predetermined length so as to be inserted into the multi-cyclone body 110, and the diameter of the backflow prevention member 172 is formed to be larger than the diameter of the first chamber outer wall 123.

On the other hand, the sealing cover 170 is detachably coupled to the upper end of the multi-cyclone body 110, as shown in Figure 2, the handle 173 is installed on the upper surface of the sealing cover 170. Therefore, when the cleaning operation is emptied of the dirt, the user is fixed to the multi-cyclone body 110 with one hand, holding the handle 173 with the other hand to separate only the sealing cover 170 to the dust collection chamber 150 The collected dirt can be emptied. Therefore, the dust emptying operation is easy, there is an effect that the user convenience is enhanced.

4 and 5, the inflow and outflow guide cover 180 is coupled to the bottom of the multi-cyclone body 110 and includes a guide cone 181, an inflow guide channel 182, and an exhaust guide channel 183. . The guide cone 181 guides the air discharged from the air outlet 124 of the first cyclone body 120 to spread radially. The inflow guide flow path 182 guides the forced introduction of radially spread air into each cyclone cone 140. The inlet guide flow path 182 has a predetermined width and depth, and has a spiral shape toward the cyclone cone 140. The discharge guide flow path 183 guides the air separated from the dirt in the second cyclone chamber 142 to the outside of the second cyclone chamber 142. The discharge guide flow path 183 has a circular pipe shape and is inserted into the second cyclone chamber 142 by a predetermined depth so as not to mix with the air introduced through the second air inlet 141.

Referring back to FIG. 2, the discharge cover 190 is coupled to the bottom of the inflow and outflow guide cover 180. Discharge cover 190 has a predetermined height to have a space therein, the filter member 300 for filtering fine dust is inserted inside.

In addition, the discharge cover 190 is provided with an air outlet port 192 at the lower side. In this case, as the air outlet port 192 is positioned at the same distance from the discharge guide flow paths 183 of the plurality of second cyclone bodies 130, the air is the same at the same time from the plurality of discharge guide flow paths 183. Since it is discharged through the air outlet port 192 installed in the center of the discharge cover 190 in the distance, the discharge pressure by the discharge air is made uniform, as in the prior art, to prevent the pressure loss due to the non-uniform discharge pressure can do. Air discharged from each cyclone cone 140 through the discharge guide flow path 183 is collected in the discharge cover 190 and exits to the outside of the multi-cyclone dust collector 100 through the air outlet port 192. .

Hereinafter, with reference to Figure 5 will be described the operation and operation of the multi-cyclone dust collector having the above configuration.

Air, including the dirt introduced through the air inlet port 127 (see FIG. 2), enters the first cyclone chamber 122 through the first air inlet 121. The introduced air is guided by the guide member 125 to ascend in the first cyclone chamber 122 to form a swirling airflow. At this time, the relatively large dirt contained in the air is concentrated toward the first chamber outer wall 123 by centrifugal force, and is accumulated in the first waste collection chamber 151 through the waste discharge port 171 while rising with the rising air. The air forming the upward airflow hits the airtight cover 170 to form a downward airflow again and flows into the air discharge pipe 126.

The air introduced into the air discharge pipe 126 passes through the air discharge port 124 and is radially spread by the guide cone 181, and guided by the inlet guide flow path 182 to pass through the second air inlet 141, respectively. Flows into the cyclone cone 140. The introduced air rises in the second cyclone chamber 142 to form a swirling airflow. At this time, the fine dust contained in the air is concentrated toward the second chamber outer wall 143, while rising by the rising air flow exits the second cyclone chamber 142 is accumulated in the second waste collection chamber (152). The air from which the fine dust is removed is lowered again and discharged through the discharge guide flow path 183. The air discharged through each discharge guide flow path 183 temporarily gathers in the discharge cover 190 and passes through the filter member 300 inserted into the discharge cover 190 to filter fine dust. Subsequently, the exhaust air passing through the filter member 300 exits the multi-cyclone dust collector 100 through the air outlet port 192 formed at the bottom of the center of the discharge cover 190. As such, the exhaust air exiting the multi-cyclone dust collector 100 is filtered, and thus, when fine dust is filtered, the exhaust air may be prevented from malfunctioning of the suction motor due to the fine dust. In the present embodiment, the filter members 300 are individually inserted, for example. However, the present invention is not limited thereto, and when a plurality of filter members are stacked, that is, a sponge filter and a micro filter are stacked, a higher dust collection efficiency is obtained. Can improve.

In particular, in this embodiment, as the air outlet port 192 is positioned to penetrate the center of the discharge cover 190, a plurality of cyclone bodies 130 arranged radially around the first cyclone body 120 Are all disposed at the same distance from each of the discharge holes 183. Therefore, the air discharged from each discharge hole 183 is uniformly discharged pressure can prevent the pressure loss due to the non-uniform discharge pressure as in the prior art.

In the present invention as described above, by inserting at least one filter member in the discharge cover to filter the air discharged from a plurality of second cyclone has the advantage that can improve the dust collection efficiency.

In addition, the air discharge port is positioned at a predetermined position of the discharge cover so that the distance between the discharge guide flow path and the air discharge port discharged from the plurality of second cyclone bodies is equal to each other, thereby maintaining the discharge pressure of the air uniformly. Pressure loss due to this can be prevented.

As mentioned above, although this invention was shown and demonstrated with reference to the preferred embodiment for describing this invention, this invention is not limited to the structure and operation as it was shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (4)

A second cyclone body having a first cyclone body having an air inlet port for introducing external air therein and communicating therewith, and a plurality of cyclone cones having a conical shape that decreases in diameter toward an upper end thereof are disposed around the first cyclone body. Multi-cyclone body comprising a; A discharge cover coupled to a lower end of the multi-cyclone body and collecting air discharged from the cyclone cone to discharge to the outside; And, And a filter member inserted inside the discharge cover. The multi-cyclone dust collector of claim 1, wherein the filter member is at least one. The multi-cyclone dust collector of claim 1, wherein the filter member is a sponge filter and a micro filter. The method according to any one of claims 1 to 3, The discharge cover is a multi-cyclone dust collector, characterized in that it comprises an air outlet port installed at the same distance from the discharge hole of the plurality of cyclone cones to discharge the air discharged from the cyclone cone at a uniform discharge pressure.

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