CA2397038C - Grill assembly for a cyclone-type dust collecting apparatus for a vacuum cleaner - Google Patents
Grill assembly for a cyclone-type dust collecting apparatus for a vacuum cleaner Download PDFInfo
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- CA2397038C CA2397038C CA002397038A CA2397038A CA2397038C CA 2397038 C CA2397038 C CA 2397038C CA 002397038 A CA002397038 A CA 002397038A CA 2397038 A CA2397038 A CA 2397038A CA 2397038 C CA2397038 C CA 2397038C
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- air
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- 239000000428 dust Substances 0.000 title claims abstract description 52
- 239000000356 contaminant Substances 0.000 claims abstract description 69
- 230000000903 blocking effect Effects 0.000 claims abstract description 14
- 230000001154 acute effect Effects 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 101001006370 Actinobacillus suis Hemolysin Proteins 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Landscapes
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
- Cyclones (AREA)
Abstract
A grill assembly for a cyclone-type dust collecting apparatus for a vacuum cleaner reduces the amount of contaminants moving toward a body of the vacuum cleaner through a grill, and also allows easy removal of contaminants from the grill. The grill assembly includes a grill body having an open upper end; a plurality of blades formed along an outer circumference of the grill body at predetermined intervals from one another to define passages interconnected with the air outlet; and a fine contaminant blocking member mounted within the grill body at a position corresponding to the passage of the grill body to filter out fine contaminants that pass through the passage. The grin body includes a first body portion supported on the air outlet of the cyclone body and having a through hole, and a second body portion on which the plurality of blades are arranged, the second body portion being removably connected to the first body portion by connecting means. Reversal of contaminants through the passage of the grill body is made difficult, and accordingly, the amount of contaminants entering into the cleaner body can be reduced. Also, a user can remove the contaminants from the grill easily, after he/she simply separates the second body portion from the first body portion.
Description
GRILL ASSEMHI"Y FOR A CYCLONE-TYPE DUST COLLECTTNG
APPA.RATU5 FOR A VACUUM CLEANER
~CKGRO~T j~ OF,TE~INVENTION
1. 'e~the Invention The present invention relates to a cyclone-type dust collecting apparatus for a vacuum cleanez, and more particularly, to a grill assembly of a cyclone-type dust collecting apparatus for a vacuum cleaner for separating dust or filth from the air whirling in the cyclone-type dust collecting apparatus.
APPA.RATU5 FOR A VACUUM CLEANER
~CKGRO~T j~ OF,TE~INVENTION
1. 'e~the Invention The present invention relates to a cyclone-type dust collecting apparatus for a vacuum cleanez, and more particularly, to a grill assembly of a cyclone-type dust collecting apparatus for a vacuum cleaner for separating dust or filth from the air whirling in the cyclone-type dust collecting apparatus.
2. ~escr~ption of thg Prior Art A cyclone-type .dust collecting apparatus separates particles from a fluid by using a centrifugal force. Due to its simple structure and high resistance to high temperature and high pressure, the cyclone-type dust collecting apparatus has been used in nnaay industrial fields and even in vacuum cleaners.
The vacuum cleaner having the cyclone-type dust collecting apparatus is constructed such that relatively large particles of contaminants are firstly filtered in the cyclone-typc dust collecting apparatus before contaminant-laden air flows to a paper filter of the cleaner body. Since tire amount of contaminants that have to be filtered at the paper filter is decreased by the cyclone apparatus, the life span of the paper filter is lengthened. Also, problems like suction force deterioration and motor overload, which are caused by a clogged or obstructed paper filter, can also be prevented.
U.S. Patent No. 6,195,835 (Application No. 09/388,532) issued March 6, 2001 to the same applicant disclosed a vacuum cleaner having the above-described cyclone-type dust collecting apparatus.
FIG. 1 is a sectional view schematically showing the structure and operation of the cyclone dust collecting apparatus for a vacuum cleaner as disclosed in U.S. Patent No. 6,195,835.
As shown in FIG. 1 of the present application, the cyclone-type dust collecting apparatus 10 disclosed in U.S. Patent No. 6,195,835 is disposed on extension pipes la and lb of the vacuum cleaner.
By using the centrifugal force of the whirling air, the cyclone-type dust collecting apparatus 10 separates and collects dust and filth from contaminant-laden air that is drawn in through a suction port of the cleaner. The cyclone-type dust collecting apparatus 10 includes a cyclone body 20, a dust receptacle 30 and a grill assembly 40.
The cyclone body 20 has a first connection pipe 21 connected to the extension pipe la at the suction port of the cleaner, a second connection pipe connected to the extension pipe lb at a body of the cleaner, an air inlet 23 interconnected with the first connection pipe 21 and an air outlet 24 interconnected with the second connection pipe 22. The contaminant-laden air is drawn into the cyclone body 20 through the air inlet 23, forming a vortex of air.
The dust receptacle 30 is removably connected to the cyclone body 20, and collects the contaminants that are separated from the air by the centrifugal force of the vortex of air generated in the cyclone body 20.
The grill assembly 40 is disposed on the lower side of the air outlet 24 of the cyclone body 20 to prevent contaminants collected in the dust receptacle from entering into the cleaner body. The grill assembly 40 has a grill supporting ~
' CA 02397038 2002-08-07 portion 41, a conical grill portion 42 and a cylindrical grill portion 43, which are integrally formed with each other. The cylindrical grill portion 43 has a plurality of fine holes 43a interconnected with the air outlet 24. The cylindrical grill portion 43 has a conical dust blocking plate 44 formed. on a distal end.
In the vacuum cleaner having the cyclone-type dust collecting apparatus as described above, contaminant-laden air is drawn into the vacuum cleaner along the pipe 1 a by the suction force that is generated at the suction port of the cleaner, and the air flows into the cyclone body 20 through the first connection pipe 21 in a diagonal ~ or downwardly helical flow and direction. The air is diagonally drawn into the cyclone body 20 into a whirling helical current that moves downward to the bottom of the dust receptacle 30. During this process, contaminants are separated from the air by the centrifugal force of the whirling air current, and are collected in the dust receptacle 30 after falling along an inner wall of the dust receptacle 30. The air reaching the bottom of the dust receptacle 30 turns in direction and moves upward in a smaller radius helical flow, and flows outside of the cleaner body through the fine holes 43a of the grill assembly 40, the air outlet 24 and the second connection pipe 23. While the air flows outside, along the outside of the grill assembly 40, some of the contaminants entrained in the air are trapped by the fine holes 43a of the grill assembly 40, and fall into the dust receptacle 30.
Contaminants which are not separated by the centrifugal force of the whirling air and thus are still entrained in the air are discharged to the air outlet 24 through the fme holes 43a of the grill assembly 40, but are filtered at a paper filter in the cleaner body and the cleaned air is discharged out of the cleaner by the motor and vacuum-inducing blower (not shown).
In a vacuum cleaner having the cyclone-type dust collecting apparatus described above, dust and filth entrained in the air drawn into the suction port of the cleaner are firstly filtered and collected by the cyclone-type dust collecting apparatus, and as a result, the amount of contaminants that the paper filter has to filter decreases.
The vacuum cleaner having the cyclone-type dust collecting apparatus is constructed such that relatively large particles of contaminants are firstly filtered in the cyclone-typc dust collecting apparatus before contaminant-laden air flows to a paper filter of the cleaner body. Since tire amount of contaminants that have to be filtered at the paper filter is decreased by the cyclone apparatus, the life span of the paper filter is lengthened. Also, problems like suction force deterioration and motor overload, which are caused by a clogged or obstructed paper filter, can also be prevented.
U.S. Patent No. 6,195,835 (Application No. 09/388,532) issued March 6, 2001 to the same applicant disclosed a vacuum cleaner having the above-described cyclone-type dust collecting apparatus.
FIG. 1 is a sectional view schematically showing the structure and operation of the cyclone dust collecting apparatus for a vacuum cleaner as disclosed in U.S. Patent No. 6,195,835.
As shown in FIG. 1 of the present application, the cyclone-type dust collecting apparatus 10 disclosed in U.S. Patent No. 6,195,835 is disposed on extension pipes la and lb of the vacuum cleaner.
By using the centrifugal force of the whirling air, the cyclone-type dust collecting apparatus 10 separates and collects dust and filth from contaminant-laden air that is drawn in through a suction port of the cleaner. The cyclone-type dust collecting apparatus 10 includes a cyclone body 20, a dust receptacle 30 and a grill assembly 40.
The cyclone body 20 has a first connection pipe 21 connected to the extension pipe la at the suction port of the cleaner, a second connection pipe connected to the extension pipe lb at a body of the cleaner, an air inlet 23 interconnected with the first connection pipe 21 and an air outlet 24 interconnected with the second connection pipe 22. The contaminant-laden air is drawn into the cyclone body 20 through the air inlet 23, forming a vortex of air.
The dust receptacle 30 is removably connected to the cyclone body 20, and collects the contaminants that are separated from the air by the centrifugal force of the vortex of air generated in the cyclone body 20.
The grill assembly 40 is disposed on the lower side of the air outlet 24 of the cyclone body 20 to prevent contaminants collected in the dust receptacle from entering into the cleaner body. The grill assembly 40 has a grill supporting ~
' CA 02397038 2002-08-07 portion 41, a conical grill portion 42 and a cylindrical grill portion 43, which are integrally formed with each other. The cylindrical grill portion 43 has a plurality of fine holes 43a interconnected with the air outlet 24. The cylindrical grill portion 43 has a conical dust blocking plate 44 formed. on a distal end.
In the vacuum cleaner having the cyclone-type dust collecting apparatus as described above, contaminant-laden air is drawn into the vacuum cleaner along the pipe 1 a by the suction force that is generated at the suction port of the cleaner, and the air flows into the cyclone body 20 through the first connection pipe 21 in a diagonal ~ or downwardly helical flow and direction. The air is diagonally drawn into the cyclone body 20 into a whirling helical current that moves downward to the bottom of the dust receptacle 30. During this process, contaminants are separated from the air by the centrifugal force of the whirling air current, and are collected in the dust receptacle 30 after falling along an inner wall of the dust receptacle 30. The air reaching the bottom of the dust receptacle 30 turns in direction and moves upward in a smaller radius helical flow, and flows outside of the cleaner body through the fine holes 43a of the grill assembly 40, the air outlet 24 and the second connection pipe 23. While the air flows outside, along the outside of the grill assembly 40, some of the contaminants entrained in the air are trapped by the fine holes 43a of the grill assembly 40, and fall into the dust receptacle 30.
Contaminants which are not separated by the centrifugal force of the whirling air and thus are still entrained in the air are discharged to the air outlet 24 through the fme holes 43a of the grill assembly 40, but are filtered at a paper filter in the cleaner body and the cleaned air is discharged out of the cleaner by the motor and vacuum-inducing blower (not shown).
In a vacuum cleaner having the cyclone-type dust collecting apparatus described above, dust and filth entrained in the air drawn into the suction port of the cleaner are firstly filtered and collected by the cyclone-type dust collecting apparatus, and as a result, the amount of contaminants that the paper filter has to filter decreases.
The conventional cyclone-type dust collecting apparatus for a vacuum cleaner described above, however, has some problems. That is, as shown in FIG.
.
2, the plurality of fine holes 43a of the grill assembly 40 are formed at an angle approximately of 90° with respect to a stream line B of the whirling air in the cyclone-type dust collecting apparatus, and the contaminants entrained in the whirling air are easily drawn into the cleaner body through the fine holes 43a in the direction indicated by dotted arrows of FIG. 2. Since the conventional cyclone-type dust collecting apparatus for vacuum cleaner does not have any means to filter fme contaminants that are more minute than the fme holes 43a, most of fme contaminants are drawn into the cleaner body through the fine holes 43a and, accordingly, the contaminants being filtered at the paper filter increase.
As a result, the lifespan of the paper filter is shortened.
Another problem of the conventional vacuum cleaner cyclone-type dust collecting apparatus is that some contaminants are not discharged but instead adhere to the fine holes 43a of the grill assembly 40 as the air flows through the fine holes 43a. As time goes by, the contaminants clog the fine holes 43a, causing problems like suction force deterioration and motor overload.
Accordingly, the contaminants at the fine holes 43a have to be removed regularly.
However, the structural characteristic of the grill assembly makes it hard for a user to clean the grill, causing inconvenience to the user.
SUMMARY OF THE INVENTION
The present invention has been made to overcome these problems of the prior art. Accordingly, it is an object of the present invention to provide a grill ZS assembly for a cyclone-type dust collecting apparatus for a vacuum cleaner capable of extending the effective life span of a paper filter by reducing an amount of contaminants drawn into a body of the vacuum cleaner through a grill by using a fme-contaminant filter means that filters fine contaminants, and also by not allowing the contaminants entrained in a whirling air to pass through the grill.
Another object of the present invention is to provide a grill assembly for a . .,. CA 02397038 2002-08-07 cyclone-type dust collecting apparatus for a vacuum cleaner in which removal of contaminants attached to a grill is easy so that a user can use the vacuum cleaner more conveniently.
The above object are accomplished by a grill assembly for a cyclone-type 5 dust collecting apparatus for a vacuum cleaner according to the present invention, including a grill body having an open upper end; a plurality of blades formed along an outer circumference of the grill body at predetermined intervals from one another to define passages interconnected with the air outlet; and a fine contaminant blocking member mounted within the grill body at a position corresponding to the passages in the grill body to filter out fme contaminants that pass through the passage.
The grill body includes a first body portion being supported on the air outlet of the cyclone body and having a through hole, and a second body portion on which the plurality of blades are arranged, the second body portion being removably connected to the first body portion by connecting means.
The connecting means includes a pair of connecting grooves formed in an inner circumference of the through hole of the first body portion, the groove being located substantially opposite to each other, each of the connecting grooves having a positioning portion having an open lower end and a connecting portion extending from the positioning portion and having a closed lower end; and a pair of connecting protrusions formed on an upper end of the second body portion to be substantially opposite to each other, the pair of connecting protrusions corresponding to the pair of connecting grooves, respectively.
Preferably the blades are arranged such that an extended line from a center of the blade is at an acute angle with respect to a stream line of the whirling air.
It is also prefenred that the interval between the blades and the angle between the blade and the stream line of the whirling air is set at a range in which a shadow of a particular blade overlaps 1050% of a shadow of the next blade, when the blades are projected onto an imaginary coaxial cylinder.
" CA 02397038 2002-08-07 _~
.
2, the plurality of fine holes 43a of the grill assembly 40 are formed at an angle approximately of 90° with respect to a stream line B of the whirling air in the cyclone-type dust collecting apparatus, and the contaminants entrained in the whirling air are easily drawn into the cleaner body through the fine holes 43a in the direction indicated by dotted arrows of FIG. 2. Since the conventional cyclone-type dust collecting apparatus for vacuum cleaner does not have any means to filter fme contaminants that are more minute than the fme holes 43a, most of fme contaminants are drawn into the cleaner body through the fine holes 43a and, accordingly, the contaminants being filtered at the paper filter increase.
As a result, the lifespan of the paper filter is shortened.
Another problem of the conventional vacuum cleaner cyclone-type dust collecting apparatus is that some contaminants are not discharged but instead adhere to the fine holes 43a of the grill assembly 40 as the air flows through the fine holes 43a. As time goes by, the contaminants clog the fine holes 43a, causing problems like suction force deterioration and motor overload.
Accordingly, the contaminants at the fine holes 43a have to be removed regularly.
However, the structural characteristic of the grill assembly makes it hard for a user to clean the grill, causing inconvenience to the user.
SUMMARY OF THE INVENTION
The present invention has been made to overcome these problems of the prior art. Accordingly, it is an object of the present invention to provide a grill ZS assembly for a cyclone-type dust collecting apparatus for a vacuum cleaner capable of extending the effective life span of a paper filter by reducing an amount of contaminants drawn into a body of the vacuum cleaner through a grill by using a fme-contaminant filter means that filters fine contaminants, and also by not allowing the contaminants entrained in a whirling air to pass through the grill.
Another object of the present invention is to provide a grill assembly for a . .,. CA 02397038 2002-08-07 cyclone-type dust collecting apparatus for a vacuum cleaner in which removal of contaminants attached to a grill is easy so that a user can use the vacuum cleaner more conveniently.
The above object are accomplished by a grill assembly for a cyclone-type 5 dust collecting apparatus for a vacuum cleaner according to the present invention, including a grill body having an open upper end; a plurality of blades formed along an outer circumference of the grill body at predetermined intervals from one another to define passages interconnected with the air outlet; and a fine contaminant blocking member mounted within the grill body at a position corresponding to the passages in the grill body to filter out fme contaminants that pass through the passage.
The grill body includes a first body portion being supported on the air outlet of the cyclone body and having a through hole, and a second body portion on which the plurality of blades are arranged, the second body portion being removably connected to the first body portion by connecting means.
The connecting means includes a pair of connecting grooves formed in an inner circumference of the through hole of the first body portion, the groove being located substantially opposite to each other, each of the connecting grooves having a positioning portion having an open lower end and a connecting portion extending from the positioning portion and having a closed lower end; and a pair of connecting protrusions formed on an upper end of the second body portion to be substantially opposite to each other, the pair of connecting protrusions corresponding to the pair of connecting grooves, respectively.
Preferably the blades are arranged such that an extended line from a center of the blade is at an acute angle with respect to a stream line of the whirling air.
It is also prefenred that the interval between the blades and the angle between the blade and the stream line of the whirling air is set at a range in which a shadow of a particular blade overlaps 1050% of a shadow of the next blade, when the blades are projected onto an imaginary coaxial cylinder.
" CA 02397038 2002-08-07 _~
Preferably, the fme contaminant blocking member is formed of a porous material.
BRIEF DESCRIPTION OF THE DRAWINGS
The above-mentioned objects and the feature of the present invention will be more apparent by describing the preferred embodiment of the present invention in detail and by referring to the appended drawings, in which:
FIG. 1 is a sectional view of a conventional cyclone-type dust collecting apparatus for a vacuum cleaner;
FIG. 2 is a partial sectional view suggesting the direction of a flow of air around a grill of the conventional cyclone-type dust collecting apparatus for the vacuum cleaner;
FIG. 3 is an exploded view of a grill assembly for a cyclone-type dust collecting apparatus for a vacuum cleaner according to the preferred embodiment of the present invention;
FIG. 4 is a sectional view showing the grill assembly according to the preferred embodiment of the present invention being employed in a body of the cyclone-type dust collecting apparatus; and FIG. 5 is a partial sectional view suggesting the direction of the flow of air around the grill assembly for the cyclone-type dust collecting apparatus for the vacuum cleaner according to the preferred embodiment of the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIIvvIENTS
The preferred embodiment of the present invention will be described in .
greater detail with reference to the accompanying drawings. Throughout the description, the like elements of the cyclone-type dust collecting apparatus will be given the same reference numerals of the prior art, except for a grill assembly.
As shown in FIGS. 3 through 5, a grill assembly 100 for a cyclone-type dust collecting apparatus for a vacuum cleaner according to the preferred embodiment of the present invention includes a grill body 110 having an upper open end interconnected with the air outlet 24 formed in the cyclone body 20, a plurality of blades 120 formed on an outer circumference of the grill body 110 at a predetermined interval to define a passage 121 along the outer circumference of the grill body 110 interconnected with the air outlet 24, and a fme contaminant blocking member 130 mounted within the grill body 110 at a position corresponding to the passage of the grill body 110 to filter the fme contaminants that pass through the passage.
As shown in FIG. 3, the grill body 110 includes a first body portion 111 having a through hole 1 i la, and a second body portion 112 on which the plurality of blades 120 are arranged. The second body portion 112 is removably connected to the first body portion 111 by a connecting unit 140. The connecting unit 140 has a pair of connecting grooves 141 formed in the inner circumference of the through hole 1 l la of the first body portion 111 and are located substantially opposite to each other. A pair of mating or connecting protrusions 142 are formed on an upper end of the second body portion 112 to be substantially opposite to each other: Each connecting groove 141 has a positioning portion 141 a having an open lower end, and a connecting portion 141 b extending from the positioning portion 141a and having a closed lower end. Accordingly, a user connects the second body portion I 12 to the first body portion 1 I I by aligning and inserting the connecting protrusions 142 of the second body portion 112 into the positioning grooves 141a of the connecting grooves 141 of the first body portion 111, and twisting the second body portion 112 thereby positioning the connecting protrusions 142 at the connecting portions 141b of the connecting grooves 141.
The user separates the second body portion 112 from the first body portion 111 by reversing this process. Accordingly, when contaminants are attached to the grill body 110, the user can remove the contaminants from the respective blades 120 of the second body portion 1112 with ease since he/she is simply required to separate the second body portion 112 from the first body portion 111 to clean the blades 120. A dust reversal preventing plate 150 (FIG. 3) can be provided.
BRIEF DESCRIPTION OF THE DRAWINGS
The above-mentioned objects and the feature of the present invention will be more apparent by describing the preferred embodiment of the present invention in detail and by referring to the appended drawings, in which:
FIG. 1 is a sectional view of a conventional cyclone-type dust collecting apparatus for a vacuum cleaner;
FIG. 2 is a partial sectional view suggesting the direction of a flow of air around a grill of the conventional cyclone-type dust collecting apparatus for the vacuum cleaner;
FIG. 3 is an exploded view of a grill assembly for a cyclone-type dust collecting apparatus for a vacuum cleaner according to the preferred embodiment of the present invention;
FIG. 4 is a sectional view showing the grill assembly according to the preferred embodiment of the present invention being employed in a body of the cyclone-type dust collecting apparatus; and FIG. 5 is a partial sectional view suggesting the direction of the flow of air around the grill assembly for the cyclone-type dust collecting apparatus for the vacuum cleaner according to the preferred embodiment of the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIIvvIENTS
The preferred embodiment of the present invention will be described in .
greater detail with reference to the accompanying drawings. Throughout the description, the like elements of the cyclone-type dust collecting apparatus will be given the same reference numerals of the prior art, except for a grill assembly.
As shown in FIGS. 3 through 5, a grill assembly 100 for a cyclone-type dust collecting apparatus for a vacuum cleaner according to the preferred embodiment of the present invention includes a grill body 110 having an upper open end interconnected with the air outlet 24 formed in the cyclone body 20, a plurality of blades 120 formed on an outer circumference of the grill body 110 at a predetermined interval to define a passage 121 along the outer circumference of the grill body 110 interconnected with the air outlet 24, and a fme contaminant blocking member 130 mounted within the grill body 110 at a position corresponding to the passage of the grill body 110 to filter the fme contaminants that pass through the passage.
As shown in FIG. 3, the grill body 110 includes a first body portion 111 having a through hole 1 i la, and a second body portion 112 on which the plurality of blades 120 are arranged. The second body portion 112 is removably connected to the first body portion 111 by a connecting unit 140. The connecting unit 140 has a pair of connecting grooves 141 formed in the inner circumference of the through hole 1 l la of the first body portion 111 and are located substantially opposite to each other. A pair of mating or connecting protrusions 142 are formed on an upper end of the second body portion 112 to be substantially opposite to each other: Each connecting groove 141 has a positioning portion 141 a having an open lower end, and a connecting portion 141 b extending from the positioning portion 141a and having a closed lower end. Accordingly, a user connects the second body portion I 12 to the first body portion 1 I I by aligning and inserting the connecting protrusions 142 of the second body portion 112 into the positioning grooves 141a of the connecting grooves 141 of the first body portion 111, and twisting the second body portion 112 thereby positioning the connecting protrusions 142 at the connecting portions 141b of the connecting grooves 141.
The user separates the second body portion 112 from the first body portion 111 by reversing this process. Accordingly, when contaminants are attached to the grill body 110, the user can remove the contaminants from the respective blades 120 of the second body portion 1112 with ease since he/she is simply required to separate the second body portion 112 from the first body portion 111 to clean the blades 120. A dust reversal preventing plate 150 (FIG. 3) can be provided.
The plurality of blades 120 are spaced along the outer circumference of the grill body 110, or along the outer circumference of the second body portion 112 to be exact, at a predetermined interval from one another in a manner of permitting air flow therethrough. That is, a spacing 121' is defined among the blades 120 as shown in FIG. 4.
As shown in FIG. 5, the blades 120 are arranged such that the angle 8 between the center line of each blade 120 and the stream line B of the whirling air is at an acute angle. In other words, lateral end of the spacing 121' are at an acute angle with respect to the stream line B of the whirling air, and the particulate contaminants are inhibited from entering the passage 121 of the grill while borne by the whirling air.
More specifically, as suggested by the dotted arrows of FIG. , the particulate contaminants in the whirling air have to turn in their direction about more than 90° in order to enter into the passage 121 between the blades 120. In other words, the contaminants have to reverse their direction of travel to enter into the passage 121, which is almost impossible arrow C. As a result, the contaminants are inhibited from entering the passage 121. (arrow D) The entrance of contaminants into the passage 121 can be prevented more effectively by decreasing the angle 8, i.e., the interval of the respective blades 120 (or spacing 121') as narrower as possible. This will, however, also increase a flow resistance of the air passing though the passage 121. Also, the noise will be worsened and the cleaning efficiency of the vacuum cleaner may also drop due to the suction force deterioration. Therefore, the angle A and the interval between the blades 120 have to be set at an appropriate degree in consideration of the above-mentioned situations.
Preferably, the angle 6 and the interval between blades 120 is set within the range in which the projection of one blade 120 on the next blade 120' overlaps from about 10% to about 50%, when the blades 120 are projected on an imaginary coaxial cylinder.
As shown in FIG. 5, the blades 120 are arranged such that the angle 8 between the center line of each blade 120 and the stream line B of the whirling air is at an acute angle. In other words, lateral end of the spacing 121' are at an acute angle with respect to the stream line B of the whirling air, and the particulate contaminants are inhibited from entering the passage 121 of the grill while borne by the whirling air.
More specifically, as suggested by the dotted arrows of FIG. , the particulate contaminants in the whirling air have to turn in their direction about more than 90° in order to enter into the passage 121 between the blades 120. In other words, the contaminants have to reverse their direction of travel to enter into the passage 121, which is almost impossible arrow C. As a result, the contaminants are inhibited from entering the passage 121. (arrow D) The entrance of contaminants into the passage 121 can be prevented more effectively by decreasing the angle 8, i.e., the interval of the respective blades 120 (or spacing 121') as narrower as possible. This will, however, also increase a flow resistance of the air passing though the passage 121. Also, the noise will be worsened and the cleaning efficiency of the vacuum cleaner may also drop due to the suction force deterioration. Therefore, the angle A and the interval between the blades 120 have to be set at an appropriate degree in consideration of the above-mentioned situations.
Preferably, the angle 6 and the interval between blades 120 is set within the range in which the projection of one blade 120 on the next blade 120' overlaps from about 10% to about 50%, when the blades 120 are projected on an imaginary coaxial cylinder.
The fine contaminant blocking member 130 is mounted within the second body portion 112 of the grill body 110, to filter out the fine contaminants that pass through the passage 121. Preferably, the fine contaminant blocking member 130 is made of a porous material that has an excellent air permeability such as a sponge, etc. In another example, the fine contaminant blocking member 130 can be a cylindrical net that has a mesh structure.
As shown in FIG. 4, the grill assembly 100 is formed downward from the air outlet 24 of the cyclone body 20 as the first body portion 111 is supported on the air outlet 24. The fine contaminant blocking member 130 is mounted within the second body portion 112 of the grill body 110.
As the vacuum cleaner operates, the whirling air current is generated within the cyclone body 20. Accordingly, the contaminants are separated from the contaminant-laden air by the centrifugal force of the whirling air, and are collected into the dust receptacle 30.
Some contaminants which are not separated in the centrifuging step, i.e., the contaminants that are not separated by the centrifugal force of the whirling air, are suspended in the air that moves around the center portion of the dust receptacle 30 upwardly toward the grill assembly 100. At least some of these contaminants entrained in the upwardly moving air are reflected by the dust reversal reflector plate 150, and are returned to the whirling air current. Contaminants which still remain in the air after encountering the dust reversal reflector plate 150, are moved toward the passage 121 of the grill assembly 100 by the air flow. Due to different pressures in and outside of the grill assembly 100, the air is drawn into the grill assembly 100 through the passage 121. Meanwhile, as described above, the passage 121, defined by the plurality of blades 120, is formed and located so that it is positioned at an acute angle with respect to the stream line B of the whirling air. Also, the contaminants have relatively greater density than the air, and thus the contaminants have a greater inertia than the air.
'' CA 02397038 2002-08-07 r In order for the contaminants entrained in the whirling air to enter into the passage 12I between the blades 120, this contaminant particle inertia must be overcome, and the direction of the whirling air current must be turned more than 90°. In other words, the contaminants are inhibited from entering into the 5 passage 121 between the blades I20. Accordingly, the amount of contaminants moving toward the cleaner body is decreased.
If some fine contaminants which are more minute than the passage 121, enter into the passage 121, they are trapped by the fine contaminant blocking filter member 130 according to the present invention. As a result, the amount of the 10 contaminants that move toward the cleaner body is decreased, and the lifespan of the paper filter is lengthened.
Meanwhile, whenever the vacuum cleaner operates, some contaminants inevitably adhere to the blades 120 of the grill body 110. When the blades 120 become visibly dirty, the user simply separates the second body portion 112 from the first body portion 111, and cleans the blades 120.
As described above, according to the present invention, since the entrance of the contaminants through the passage 121 of the grill body 110 is prevented as much as possible, the amount of contaminants reaching the cleaner body is decreased. Also, since even the fme contaminants, which are smaller than the passage 121, are filtered at the fine contaminant blocking member 130, the amount of contaminants to the cleaner body is once again reduced. As a result, the Iifespan of the paper filter is lengthened.
Also, according to the present invention, the grill body 110 is separable into the first body portion 111 and the second body portion 112. Accordingly, the user can easily clean the grill body 110 when the need arises, after simply separating the second body portion 112 from the first body portion 111. As a result, the vacuum cleaner becomes easy to use.
Although the preferred embodiment of the present invention has been described, it will be understood by those skilled in the art that the present invention should not be limited to the described preferred embodiment, but various changes and modifications can be made within the spirit and scope of the present invention as defined by the appended claims.
As shown in FIG. 4, the grill assembly 100 is formed downward from the air outlet 24 of the cyclone body 20 as the first body portion 111 is supported on the air outlet 24. The fine contaminant blocking member 130 is mounted within the second body portion 112 of the grill body 110.
As the vacuum cleaner operates, the whirling air current is generated within the cyclone body 20. Accordingly, the contaminants are separated from the contaminant-laden air by the centrifugal force of the whirling air, and are collected into the dust receptacle 30.
Some contaminants which are not separated in the centrifuging step, i.e., the contaminants that are not separated by the centrifugal force of the whirling air, are suspended in the air that moves around the center portion of the dust receptacle 30 upwardly toward the grill assembly 100. At least some of these contaminants entrained in the upwardly moving air are reflected by the dust reversal reflector plate 150, and are returned to the whirling air current. Contaminants which still remain in the air after encountering the dust reversal reflector plate 150, are moved toward the passage 121 of the grill assembly 100 by the air flow. Due to different pressures in and outside of the grill assembly 100, the air is drawn into the grill assembly 100 through the passage 121. Meanwhile, as described above, the passage 121, defined by the plurality of blades 120, is formed and located so that it is positioned at an acute angle with respect to the stream line B of the whirling air. Also, the contaminants have relatively greater density than the air, and thus the contaminants have a greater inertia than the air.
'' CA 02397038 2002-08-07 r In order for the contaminants entrained in the whirling air to enter into the passage 12I between the blades 120, this contaminant particle inertia must be overcome, and the direction of the whirling air current must be turned more than 90°. In other words, the contaminants are inhibited from entering into the 5 passage 121 between the blades I20. Accordingly, the amount of contaminants moving toward the cleaner body is decreased.
If some fine contaminants which are more minute than the passage 121, enter into the passage 121, they are trapped by the fine contaminant blocking filter member 130 according to the present invention. As a result, the amount of the 10 contaminants that move toward the cleaner body is decreased, and the lifespan of the paper filter is lengthened.
Meanwhile, whenever the vacuum cleaner operates, some contaminants inevitably adhere to the blades 120 of the grill body 110. When the blades 120 become visibly dirty, the user simply separates the second body portion 112 from the first body portion 111, and cleans the blades 120.
As described above, according to the present invention, since the entrance of the contaminants through the passage 121 of the grill body 110 is prevented as much as possible, the amount of contaminants reaching the cleaner body is decreased. Also, since even the fme contaminants, which are smaller than the passage 121, are filtered at the fine contaminant blocking member 130, the amount of contaminants to the cleaner body is once again reduced. As a result, the Iifespan of the paper filter is lengthened.
Also, according to the present invention, the grill body 110 is separable into the first body portion 111 and the second body portion 112. Accordingly, the user can easily clean the grill body 110 when the need arises, after simply separating the second body portion 112 from the first body portion 111. As a result, the vacuum cleaner becomes easy to use.
Although the preferred embodiment of the present invention has been described, it will be understood by those skilled in the art that the present invention should not be limited to the described preferred embodiment, but various changes and modifications can be made within the spirit and scope of the present invention as defined by the appended claims.
Claims (6)
1. A grill assembly for cyclone-type dust collecting apparatus for a vacuum cleaner, the cyclone-type dust collecting apparatus operating to separate contaminants from a whirling flow of air by the centrifugal force of contaminant-laden air in the grill assembly being formed on an air outlet of a cyclone body of the cyclone-type dust collecting apparatus to prevent entrance of contaminants to a body of the vacuum cleaner, the grill assembly comprising:
a grill body having an open upper end;
a plurality of blades equally spaced along an outer circumference of the grill body with a predetermined interval from one another; and a fine contaminant blocking member mounted within the grill body defining a passage between the blocking member and the grill body to filter out fine contaminants that pass through the passage and discharging clean air through the air outlet.
a grill body having an open upper end;
a plurality of blades equally spaced along an outer circumference of the grill body with a predetermined interval from one another; and a fine contaminant blocking member mounted within the grill body defining a passage between the blocking member and the grill body to filter out fine contaminants that pass through the passage and discharging clean air through the air outlet.
2. The grill assembly of claim 1 wherein, the grill body comprises a first body portion being supported on the air outlet of the cyclone body and having a through hole, and a second body portion on which the plurality of blades are arranged, the second body portion being removably connected to the first body portion by connecting means.
3. The grill assembly of claim 2, wherein the connecting means comprises:
a pair of connecting grooves formed in an inner circumference of the through hole of the first body portion, the grooves being located substantially opposite to each other, each of the connecting grooves having a positioning portion having an open lower end and a connecting portion extending from the positioning portion and having a closed lower end; and a pair of connecting protrusions formed on an upper end of the second body portion, the grooves being located substantially opposite to each other, the pair of connecting protrusions corresponding to the pair of connecting grooves, respectively.
a pair of connecting grooves formed in an inner circumference of the through hole of the first body portion, the grooves being located substantially opposite to each other, each of the connecting grooves having a positioning portion having an open lower end and a connecting portion extending from the positioning portion and having a closed lower end; and a pair of connecting protrusions formed on an upper end of the second body portion, the grooves being located substantially opposite to each other, the pair of connecting protrusions corresponding to the pair of connecting grooves, respectively.
4. The grill assembly of claim 1, wherein each of the blades is arranged such that an extended line from a center of the blade is at an acute angle with respect to a stream line of the whirling air.
5. The grill assembly of claim 4, wherein the interval between the blades and the angle between the blade and the stream line of the whirling air are selected from within a range in which a projection of a blade overlaps from about 10%
to about 50% with the projection of the next blade, when the blades are projected onto an imaginary coaxial cylinder.
to about 50% with the projection of the next blade, when the blades are projected onto an imaginary coaxial cylinder.
6. The grill assembly of claim 1, wherein the fine contaminant blocking member is formed of a porous material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002010628A JP4012736B2 (en) | 2002-01-18 | 2002-01-18 | Current introduction terminal |
| JP2002-10628 | 2002-02-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2397038A1 CA2397038A1 (en) | 2003-08-27 |
| CA2397038C true CA2397038C (en) | 2006-01-17 |
Family
ID=27648314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002397038A Expired - Fee Related CA2397038C (en) | 2002-01-18 | 2002-08-07 | Grill assembly for a cyclone-type dust collecting apparatus for a vacuum cleaner |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4012736B2 (en) |
| CA (1) | CA2397038C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4689984B2 (en) | 2004-07-20 | 2011-06-01 | 株式会社ワイ・ワイ・エル | DC superconducting power transmission cable and power transmission system |
| JP4880229B2 (en) | 2005-01-31 | 2012-02-22 | 株式会社ワイ・ワイ・エル | Superconducting power transmission cable and power transmission system |
| JP2010192776A (en) * | 2009-02-19 | 2010-09-02 | National Institute Of Advanced Industrial Science & Technology | Structure of thick film type thermoelectric power generation module |
| EP2433321B1 (en) | 2009-05-18 | 2014-10-22 | Bsst Llc | Battery thermal management system |
| DE112011103478T5 (en) | 2010-10-14 | 2013-08-01 | Chubu University Educational Foundation | Conductor device |
| WO2013009759A2 (en) | 2011-07-11 | 2013-01-17 | Amerigon Incorporated | Thermoelectric-based thermal management of electrical devices |
| JP5626593B2 (en) * | 2011-10-03 | 2014-11-19 | 学校法人中部大学 | Thermoelectric cooling type current lead |
| CN105075002B (en) | 2013-01-14 | 2018-03-16 | 詹思姆公司 | The heat management based on thermoelectricity of electrical equipment |
| JP6637765B2 (en) | 2013-01-30 | 2020-01-29 | ジェンサーム インコーポレイテッドＧｅｎｔｈｅｒｍ Ｉｎｃｏｒｐｏｒａｔｅｄ | Thermoelectric based thermal management system |
| KR102033212B1 (en) | 2013-10-29 | 2019-10-16 | 젠썸 인코포레이티드 | Battery thermal management with thermoelectrics |
| JP6668335B2 (en) | 2014-09-12 | 2020-03-18 | ジェンサーム インコーポレイテッドＧｅｎｔｈｅｒｍ Ｉｎｃｏｒｐｏｒａｔｅｄ | Graphite thermoelectric and / or resistive thermal management systems and methods |
| DE102016211464A1 (en) * | 2016-06-27 | 2017-12-28 | Phoenix Contact E-Mobility Gmbh | Power contact system for a charging plug and / or a charging socket, charging plug and charging station for delivering electrical energy to a receiver of electrical energy |
| WO2020112902A1 (en) | 2018-11-30 | 2020-06-04 | Gentherm Incorporated | Thermoelectric conditioning system and methods |
| US11152557B2 (en) | 2019-02-20 | 2021-10-19 | Gentherm Incorporated | Thermoelectric module with integrated printed circuit board |
-
2002
- 2002-01-18 JP JP2002010628A patent/JP4012736B2/en not_active Expired - Fee Related
- 2002-08-07 CA CA002397038A patent/CA2397038C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2397038A1 (en) | 2003-08-27 |
| JP2003217735A (en) | 2003-07-31 |
| JP4012736B2 (en) | 2007-11-21 |
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