CA2145562A1 - High performance vacuum/blower device - Google Patents
High performance vacuum/blower deviceInfo
- Publication number
- CA2145562A1 CA2145562A1 CA 2145562 CA2145562A CA2145562A1 CA 2145562 A1 CA2145562 A1 CA 2145562A1 CA 2145562 CA2145562 CA 2145562 CA 2145562 A CA2145562 A CA 2145562A CA 2145562 A1 CA2145562 A1 CA 2145562A1
- Authority
- CA
- Canada
- Prior art keywords
- vacuum
- blower
- high performance
- blower device
- switched reluctance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A high performance vacuum/blower device is disclosed. The vacuum/blower device includes a housing having an air inlet and an air outlet. The electric motor is provided with an impeller for creating an air flow into the air inlet and for exhausting air flow through the air outlet. The electric motor consists of a switched reluctance motor which is directly connect to the impeller for operation at variable low to high speeds in order to provide a high performance vacuum/blower device. The switched reluctance motor may operate at high speeds in excess of 25,000 rpm including high speeds in excess of 35,000 rpm.
Description
Back~round of the Invention The present invention relates to a high pelrolLu~ce v~;uun3/blower device and more particularly to a high ~ . rO. ~ re vacuum/blower device which ope~ s at variable low to high speeds.
ULU~ motors are co~vr~ n~lly used to operate V~UULU rl~n~-~ and/or blowers.
Because uLu~ al motors can rotate at speeds of a~ x...~i~ly 20-25,000 rpm, they are v-ery effective because they can direct drive impellers fæt enough to provide the necess~y suction or blower air flow for most cleAnin~ jobs. However, for high ~ r~....~AI-re applirAti<)n~, for eY~mrle V~UULU cleaners with blower cAr~bility or where high V~;UULU iS r~a.uiled to remove water from rugs, dual stage impellers are needed to create the desired-vacuum or blower air flow -Switched reluctance motors operate reliably at variable low to high speeds, includingspeeds much higher than 25,000 rpm. If the speed of an impeller is increased, the vacuum or pl~,s~ule created increases roughly as the square of the speed. Thus, when a vacuum or blower is operated at a~pl~x;..~tely 35,000 rprn, it is possible to utilize only a single stage impeller in order to achieve the ~r,lmance desired for high prrfonn~nce applications. ~!t~rn~tively, the . .
- : , .: .......... . . -.
-. . . ~ . . .
SPD5547.~ - ~ . 2 ?l45562 high speed capability of switched reluctance motors may be used to provide a performance `
equivalent to that of u~iversal motors and single stage impellers while using a smaller motor and impeller.
It will be further appreciated that switched reluctance motors do not use brushes as universal motors do. Brush wear is a primary failure in universal motors. Switched reluctance motors, on the other hand, use semi-conductor switches to drive the motors, and thus, the life of switched reluctance motors is much longer than that of universal motors.
As will be seen from the discussion that follows, the use of switched reluctance motor technology in vacuum/blower devices provides a smaller, less complicated vacuum or blower source with very high reliabilit,v for high performance applications.
Summary of the Invention Among the several object and advantages of the present invention include:
the provision of a new and improved high performance vacuum and/or blower device;
the provision of the aforementioned high performance vacuum and/or blower device for use as a high performance vacuum, a vacuum blower device or as an extractor vacuum for use in rug cleaning and the like;
the provision of the aforementioned high performance vacuum and/or blower device which utilizes switched reluctance motor technology to provide a smaller, less complicated vacuum or blower source with very high reliability;
SPD5547.MK 3 -the provision of the aforementioned high performance vacuum and/or blower device with a switched reluctance motor which, when operated at speeds of approximately 35,000 rpm, requires only a single stage impeller for high performance àpplica~ions;
the provision of the aforementioned high performance vacuum and/or blower device with a switched reluctance motor that can be provided with a performance equivalent to that of universal motors using a smaller impeller and motor;
the provision of the aforementioned high performance vacuum and/or blower device which is readily adaptable to conventional vacuum and/or blower applications; is readily adaptable to variable speed; minimi7~s wear; is long lasting and durable; and is otherwise well adapted for the purposes intended.
Briefly stated, the high performance vacuum and/or blower device of the present invention includes a housing having an air inlet and an air outlet. An electric motor is provided having an impeller for creating air flow into the air inlet and for exh~ ting air flow through the air outlet. The electric motor consists of a switched reluctance motor which is directly connected to the impeller for operation in variable low to high speeds in order to provide a high performance vacuum/blower device. The switched reluctance motor can operate at speeds in excess of 25,000 rpm as well as speeds in excess of 35,000 rpm, in order to provide a high performance vacuum/blower device.
These and other objects and advantages of the present invention will become more apparent from the description that follows.
SPD5547.MK 4 . . .
21~5562 Brief l)escr~tion of the Drawin~
In the drawings, Figure 1 is a front prospective view of a wet/dry utility vacuum cleaner with detachable blower that utilizes a switched reluctance motor to provide a high performance vacuum and blower device in accordance with the teachings of the present invention;
Figure 2 is an exploded side elevational view of the wet/dry utility vacuum cleaner illu~lL~ling the detachable blower removed therefrom;
Figure 3 is a fr~gment~ry side elevational view, partially in section, of the operating components of the wet/dry utility vacuum cleaner and let~ch~ble blower which includes a switched reluctance motor to provide a high performance vacuum and blower in accordance with the teachings of the present invention; and Figure 4 is an enlarged sectional view of the aforementioned operating components of the wet/dry utility vacuum cleaner and detachable blower.
Corresponding numerals will be used throughout the several figures of the drawings.
Description of the Preferred Embodiments The following detailed description illustrates the invention by way of example and not by way of limitation. The description will clearly enable one skilled in the art to make and use the invention and describes several embodiments, adaptations, variations, alternatives and uses of the invention, including what we presently believe is the best mode of carrying out the invention.
As indicated above, there are several high perforrnance applications for vacuum cleaners and/or blower devices. For exarnple, vacuum cleaners which also have blower capability or extractor vacuum cleaners to remove water from rugs-are two typical high performance --SPD5 547.MK 5 21 lS562 .
applications. As shown in the drawings and æ discussed below, the high performance vacuum/blower device of the present invention is illu~ d æ being used in connection with a wet/dry utility vacuum cleaner having a det~l~h~hle blower device of the type and kind sper.ifi~lly ~ close~l in the aforementioned copending patent applications Figures 1-2 of the drawings generally illustrate the wet/dry utility vacuum cleaner with det~h~hle blower 1. Specifically, the wet/dry utility vacuum cleaner with det~t~.h~hle blower 1 is shown æ including a tool caddy 3, a va~;uulll cleaner drum 5 positioned within the tool caddy 3, a lid 7 that covers the open upper end of the vacuum cleaner drum 5, and a let~-h~ble blower 9 that is received within complem~nt~ly shape cavities or openings of the lid 7, as illustrated in Figures 1 and 3-4. The ~et~h~hle blower 9 is also capable of being separated from the lid 7 for independent use, æ shown in Figure 2 of the drawings. In order to remove the det~-h~hle blower 9 from the lid 7, a det~h~hle blower latch 11, pivotally mounted to the lid 7, must be moved to a tli.~ng~ged position by the user. This then enables the user to readily grasp and lift the det~h~hle blower 9 through the U-shaped handle 13 for opelalmg the blower 9 indepentlt.ntly of the assembled vacuum Fleaner and blower 1, as shown in Figure 1 of the drawings.
Figures 3-4 of the drawings show the operation of the wet/dry utility vacuurn cleaner I
with det~t~h~ble blower 9 in æsembled position. Within the vacuum cleaner drum 5, a filter æsembly 15 depends from the undersurface of the lid 7 in surrounding relationship to a tapered wall opening 17 of the lid 7. The filter æsembly includes a hollow cylindrical filter 19 which surrounds the tapered wall opening 17 at an upper end.and leceives a float 21 within the hollow . - . . - - - --.: . . - . .- . ~ . ,.
SPD5547 MK ~ . . . .. 6 ~ ~` :: .; - - - . - -.
: ~ . .. ... , - . . - , inner cylindrical wall of the filter 19 at its lower end. An end cap 23 is attached to the boKom of the filter assembly 15 and assists in holding the filter 19 and float 21 in the relative positions illustrated. The filter 19 filters debris from air vacuumed into the vacuum cleaner drum 5 through the inlet port 25 of the hood 27, the laKer being an integral part of the lid 7 to assist in receiving the detachable blower 9 in assembled position, as illustrated in Figures 1 and 3-4 of the drawings. The air inlet port 25 receives a vacuum hose (not shown) for depositing air and debris into the wall cavity 29 of the lid 7 for containment within the vacuum cleaner drum 5. Solid particle debris will be collected within the interior of the vacuum cleaner drum 5 at its boKom while debris suspended in the air will be filtered by the air filter 19 for exhaust of the cleaned air upwardly through the tapered wall opening 17 and into the blower 9.
When the wet/dry utility vacuum cleaner 1 is operated to collect spilled liquids, the spilled liquid as well as air and debris will be deposited through the air inlet port 25 into the upper wall cavity 29 and into the vacuum cleaner drum 5. As the spilled liquid rises to the level of the float 21, the float 21 will begin to rise within the air filter 19 and will continue to rise as the water rises to the point where the float 21 will close off the tapered wall opening 17 such that no liquid can enter into and affect the operation of the blower 9.
Within thc blower 9, there is mounted an electric motor 31 which creates the air flow within and through the blower 9. The electric motor 31 is a switched reluctance motor which operates to draw air through the filter 19 up through the tapered wall opening 17 and through the air inlet slots 35. The motor 31 includes a fan blade 33 for drawing cooling air over the motor 31 separate from the airstream used for cleaning. Thus, the fan blade 33 exhausts air through the SPD5547.MK 7 21~5562 -- --`
motor ~h~ t vent slots 37, the air drawn through the filter 19 will pass through the air inlet vent slots 35through an air intake or filter 39 mounted adjacent to air inlet vent slots -35 to further ~lter the incoming air.
The switched reluctance motor 31 that is used to operate the clet~l.h~ble blower 9 as well as the wet/dry utility vacuum cleaner 1 is particularly useful in the high- pelrullll~ce vacuurn/blower application (1i~cllssed above. While UlliVt;l:jal motors of the prior art can rotate at speeds of a~rux....~tPly 20-25,000 rpm, the switched reluctance motor 31 used in the present invention can operate reliably at variable low to high speeds. Thus, in ~ iti()n to rotating at a low speeds of 20-25,000 rpm like ~ al motors, the switched reluctance motor 31 can operate at speeds higher than 25,000 rpm including speeds of a~x~ ely 35,000 rpm.
Uni~e~sal motors require dual stage impellers to create the desired vacuum or blower air flow for high ~. rO. ..,A.~c~-e aprlil?~tion~ If the speed of an impeller is increased, the vacuum or cs~ule increases roughly as the square of the speed. Thus, when a vacuum or blower is operated at a~ro~ tely 35,000 rprn, it is possible to utilize only a single stage impeller in order to achieve the p~, rO. Il~ e desired for high pc~r~,llllallce applications. AlLell~Lively, ~e high speed c~r~bility of switched reluctance motors may be used to provide a pclr~llllance equivalent to ~at of universal motors and single stage impellers while using a smaller motor and impeller.
. : -. : --:
SPD554~ 8 . . - . .-- - . . . . ..
2I q5562 Another advantage of switchéd reluctance motors is that they do not require brushes as universal motors do. Brush wear is a primary failure in universal motors. On the other hand, switched reluctance motors use semi-conductor switches to drive the motors. Thus, the life of switched reluctance motors is much greater than that of universal motors. For additional inforrnation on switched reluctance motors, reference is made to copending patent application Serial No. filed entitled SWITCHED RELUCTANCE MOTOR, INVERTER, AND CONTROL WITH IMPROVED PERFORMANCE AND NOISE, also ~igne~l to the same assignee as the present invention, now U.S. Patent No.
From the foregoing, it will be appreciated that the high performance vacuum/blower device of the present invention effectively uses switched reluctance motors to provide a small, less complicated vacuum or blower source with very high reliability for high perforrnance applications.
In view of the above, it will be seen that the several objects and features of this invention are achieved and other advantageous results obtained.
As various changes could be made in the above construction without departing from the scope of the invention, it is intent1ed that all matter contained in the above description or shown in the acco~ allyillg drawings shall be hltel~lcted as illustrative and not in a limiting sense.
SPD5547 MK ~ g
ULU~ motors are co~vr~ n~lly used to operate V~UULU rl~n~-~ and/or blowers.
Because uLu~ al motors can rotate at speeds of a~ x...~i~ly 20-25,000 rpm, they are v-ery effective because they can direct drive impellers fæt enough to provide the necess~y suction or blower air flow for most cleAnin~ jobs. However, for high ~ r~....~AI-re applirAti<)n~, for eY~mrle V~UULU cleaners with blower cAr~bility or where high V~;UULU iS r~a.uiled to remove water from rugs, dual stage impellers are needed to create the desired-vacuum or blower air flow -Switched reluctance motors operate reliably at variable low to high speeds, includingspeeds much higher than 25,000 rpm. If the speed of an impeller is increased, the vacuum or pl~,s~ule created increases roughly as the square of the speed. Thus, when a vacuum or blower is operated at a~pl~x;..~tely 35,000 rprn, it is possible to utilize only a single stage impeller in order to achieve the ~r,lmance desired for high prrfonn~nce applications. ~!t~rn~tively, the . .
- : , .: .......... . . -.
-. . . ~ . . .
SPD5547.~ - ~ . 2 ?l45562 high speed capability of switched reluctance motors may be used to provide a performance `
equivalent to that of u~iversal motors and single stage impellers while using a smaller motor and impeller.
It will be further appreciated that switched reluctance motors do not use brushes as universal motors do. Brush wear is a primary failure in universal motors. Switched reluctance motors, on the other hand, use semi-conductor switches to drive the motors, and thus, the life of switched reluctance motors is much longer than that of universal motors.
As will be seen from the discussion that follows, the use of switched reluctance motor technology in vacuum/blower devices provides a smaller, less complicated vacuum or blower source with very high reliabilit,v for high performance applications.
Summary of the Invention Among the several object and advantages of the present invention include:
the provision of a new and improved high performance vacuum and/or blower device;
the provision of the aforementioned high performance vacuum and/or blower device for use as a high performance vacuum, a vacuum blower device or as an extractor vacuum for use in rug cleaning and the like;
the provision of the aforementioned high performance vacuum and/or blower device which utilizes switched reluctance motor technology to provide a smaller, less complicated vacuum or blower source with very high reliability;
SPD5547.MK 3 -the provision of the aforementioned high performance vacuum and/or blower device with a switched reluctance motor which, when operated at speeds of approximately 35,000 rpm, requires only a single stage impeller for high performance àpplica~ions;
the provision of the aforementioned high performance vacuum and/or blower device with a switched reluctance motor that can be provided with a performance equivalent to that of universal motors using a smaller impeller and motor;
the provision of the aforementioned high performance vacuum and/or blower device which is readily adaptable to conventional vacuum and/or blower applications; is readily adaptable to variable speed; minimi7~s wear; is long lasting and durable; and is otherwise well adapted for the purposes intended.
Briefly stated, the high performance vacuum and/or blower device of the present invention includes a housing having an air inlet and an air outlet. An electric motor is provided having an impeller for creating air flow into the air inlet and for exh~ ting air flow through the air outlet. The electric motor consists of a switched reluctance motor which is directly connected to the impeller for operation in variable low to high speeds in order to provide a high performance vacuum/blower device. The switched reluctance motor can operate at speeds in excess of 25,000 rpm as well as speeds in excess of 35,000 rpm, in order to provide a high performance vacuum/blower device.
These and other objects and advantages of the present invention will become more apparent from the description that follows.
SPD5547.MK 4 . . .
21~5562 Brief l)escr~tion of the Drawin~
In the drawings, Figure 1 is a front prospective view of a wet/dry utility vacuum cleaner with detachable blower that utilizes a switched reluctance motor to provide a high performance vacuum and blower device in accordance with the teachings of the present invention;
Figure 2 is an exploded side elevational view of the wet/dry utility vacuum cleaner illu~lL~ling the detachable blower removed therefrom;
Figure 3 is a fr~gment~ry side elevational view, partially in section, of the operating components of the wet/dry utility vacuum cleaner and let~ch~ble blower which includes a switched reluctance motor to provide a high performance vacuum and blower in accordance with the teachings of the present invention; and Figure 4 is an enlarged sectional view of the aforementioned operating components of the wet/dry utility vacuum cleaner and detachable blower.
Corresponding numerals will be used throughout the several figures of the drawings.
Description of the Preferred Embodiments The following detailed description illustrates the invention by way of example and not by way of limitation. The description will clearly enable one skilled in the art to make and use the invention and describes several embodiments, adaptations, variations, alternatives and uses of the invention, including what we presently believe is the best mode of carrying out the invention.
As indicated above, there are several high perforrnance applications for vacuum cleaners and/or blower devices. For exarnple, vacuum cleaners which also have blower capability or extractor vacuum cleaners to remove water from rugs-are two typical high performance --SPD5 547.MK 5 21 lS562 .
applications. As shown in the drawings and æ discussed below, the high performance vacuum/blower device of the present invention is illu~ d æ being used in connection with a wet/dry utility vacuum cleaner having a det~l~h~hle blower device of the type and kind sper.ifi~lly ~ close~l in the aforementioned copending patent applications Figures 1-2 of the drawings generally illustrate the wet/dry utility vacuum cleaner with det~h~hle blower 1. Specifically, the wet/dry utility vacuum cleaner with det~t~.h~hle blower 1 is shown æ including a tool caddy 3, a va~;uulll cleaner drum 5 positioned within the tool caddy 3, a lid 7 that covers the open upper end of the vacuum cleaner drum 5, and a let~-h~ble blower 9 that is received within complem~nt~ly shape cavities or openings of the lid 7, as illustrated in Figures 1 and 3-4. The ~et~h~hle blower 9 is also capable of being separated from the lid 7 for independent use, æ shown in Figure 2 of the drawings. In order to remove the det~-h~hle blower 9 from the lid 7, a det~h~hle blower latch 11, pivotally mounted to the lid 7, must be moved to a tli.~ng~ged position by the user. This then enables the user to readily grasp and lift the det~h~hle blower 9 through the U-shaped handle 13 for opelalmg the blower 9 indepentlt.ntly of the assembled vacuum Fleaner and blower 1, as shown in Figure 1 of the drawings.
Figures 3-4 of the drawings show the operation of the wet/dry utility vacuurn cleaner I
with det~t~h~ble blower 9 in æsembled position. Within the vacuum cleaner drum 5, a filter æsembly 15 depends from the undersurface of the lid 7 in surrounding relationship to a tapered wall opening 17 of the lid 7. The filter æsembly includes a hollow cylindrical filter 19 which surrounds the tapered wall opening 17 at an upper end.and leceives a float 21 within the hollow . - . . - - - --.: . . - . .- . ~ . ,.
SPD5547 MK ~ . . . .. 6 ~ ~` :: .; - - - . - -.
: ~ . .. ... , - . . - , inner cylindrical wall of the filter 19 at its lower end. An end cap 23 is attached to the boKom of the filter assembly 15 and assists in holding the filter 19 and float 21 in the relative positions illustrated. The filter 19 filters debris from air vacuumed into the vacuum cleaner drum 5 through the inlet port 25 of the hood 27, the laKer being an integral part of the lid 7 to assist in receiving the detachable blower 9 in assembled position, as illustrated in Figures 1 and 3-4 of the drawings. The air inlet port 25 receives a vacuum hose (not shown) for depositing air and debris into the wall cavity 29 of the lid 7 for containment within the vacuum cleaner drum 5. Solid particle debris will be collected within the interior of the vacuum cleaner drum 5 at its boKom while debris suspended in the air will be filtered by the air filter 19 for exhaust of the cleaned air upwardly through the tapered wall opening 17 and into the blower 9.
When the wet/dry utility vacuum cleaner 1 is operated to collect spilled liquids, the spilled liquid as well as air and debris will be deposited through the air inlet port 25 into the upper wall cavity 29 and into the vacuum cleaner drum 5. As the spilled liquid rises to the level of the float 21, the float 21 will begin to rise within the air filter 19 and will continue to rise as the water rises to the point where the float 21 will close off the tapered wall opening 17 such that no liquid can enter into and affect the operation of the blower 9.
Within thc blower 9, there is mounted an electric motor 31 which creates the air flow within and through the blower 9. The electric motor 31 is a switched reluctance motor which operates to draw air through the filter 19 up through the tapered wall opening 17 and through the air inlet slots 35. The motor 31 includes a fan blade 33 for drawing cooling air over the motor 31 separate from the airstream used for cleaning. Thus, the fan blade 33 exhausts air through the SPD5547.MK 7 21~5562 -- --`
motor ~h~ t vent slots 37, the air drawn through the filter 19 will pass through the air inlet vent slots 35through an air intake or filter 39 mounted adjacent to air inlet vent slots -35 to further ~lter the incoming air.
The switched reluctance motor 31 that is used to operate the clet~l.h~ble blower 9 as well as the wet/dry utility vacuum cleaner 1 is particularly useful in the high- pelrullll~ce vacuurn/blower application (1i~cllssed above. While UlliVt;l:jal motors of the prior art can rotate at speeds of a~rux....~tPly 20-25,000 rpm, the switched reluctance motor 31 used in the present invention can operate reliably at variable low to high speeds. Thus, in ~ iti()n to rotating at a low speeds of 20-25,000 rpm like ~ al motors, the switched reluctance motor 31 can operate at speeds higher than 25,000 rpm including speeds of a~x~ ely 35,000 rpm.
Uni~e~sal motors require dual stage impellers to create the desired vacuum or blower air flow for high ~. rO. ..,A.~c~-e aprlil?~tion~ If the speed of an impeller is increased, the vacuum or cs~ule increases roughly as the square of the speed. Thus, when a vacuum or blower is operated at a~ro~ tely 35,000 rprn, it is possible to utilize only a single stage impeller in order to achieve the p~, rO. Il~ e desired for high pc~r~,llllallce applications. AlLell~Lively, ~e high speed c~r~bility of switched reluctance motors may be used to provide a pclr~llllance equivalent to ~at of universal motors and single stage impellers while using a smaller motor and impeller.
. : -. : --:
SPD554~ 8 . . - . .-- - . . . . ..
2I q5562 Another advantage of switchéd reluctance motors is that they do not require brushes as universal motors do. Brush wear is a primary failure in universal motors. On the other hand, switched reluctance motors use semi-conductor switches to drive the motors. Thus, the life of switched reluctance motors is much greater than that of universal motors. For additional inforrnation on switched reluctance motors, reference is made to copending patent application Serial No. filed entitled SWITCHED RELUCTANCE MOTOR, INVERTER, AND CONTROL WITH IMPROVED PERFORMANCE AND NOISE, also ~igne~l to the same assignee as the present invention, now U.S. Patent No.
From the foregoing, it will be appreciated that the high performance vacuum/blower device of the present invention effectively uses switched reluctance motors to provide a small, less complicated vacuum or blower source with very high reliability for high perforrnance applications.
In view of the above, it will be seen that the several objects and features of this invention are achieved and other advantageous results obtained.
As various changes could be made in the above construction without departing from the scope of the invention, it is intent1ed that all matter contained in the above description or shown in the acco~ allyillg drawings shall be hltel~lcted as illustrative and not in a limiting sense.
SPD5547 MK ~ g
Claims (5)
1. A high performance vacuum/blower device comprising:
a housing having an air inlet and an air outlet;
an electric motor having an impeller for creating airflow into the air inlet and for exhausting airflow through the air outlet; and said electric motor consisting of a switched reluctance motor which is directly connected to said impeller for operation at variable low to high speeds in order to provide a high performance vacuum/blower device.
a housing having an air inlet and an air outlet;
an electric motor having an impeller for creating airflow into the air inlet and for exhausting airflow through the air outlet; and said electric motor consisting of a switched reluctance motor which is directly connected to said impeller for operation at variable low to high speeds in order to provide a high performance vacuum/blower device.
2. The high performance vacuum/blower device as defined in Claim 1 wherein the switched reluctance motor operates at high speeds in excess of 25,000 rpm.
3. The high performance vacuum/blower device, as defined in Claim 1 wherein the switched reluctance motor operates at high speeds in excess of 35,000 rpm.
4. A high performance vacuum/blower device comprising:
a housing having an air inlet and an air outlet;
an electric motor having an impeller for creating airflow into the air inlet and for exhausting airflow through the air outlet; and said electric motor consisting of a switched reluctance motor which is directly connected to said impeller and which operates at speeds in excess of 25000 rpm to provide a high performance vacuum/blower device.
a housing having an air inlet and an air outlet;
an electric motor having an impeller for creating airflow into the air inlet and for exhausting airflow through the air outlet; and said electric motor consisting of a switched reluctance motor which is directly connected to said impeller and which operates at speeds in excess of 25000 rpm to provide a high performance vacuum/blower device.
5. A high performance vacuum device comprising:
a housing having an air inlet and an air outlet;
an electric motor having an impeller for creating airflow into the air inlet and for exhausting airflow through the air outlet; and said electric motor consisting of a switched reluctance motor which is directly connected to said impeller and which operates at speeds in excess of 35,000 rpm to provide a high performance vacuum/blower device.
a housing having an air inlet and an air outlet;
an electric motor having an impeller for creating airflow into the air inlet and for exhausting airflow through the air outlet; and said electric motor consisting of a switched reluctance motor which is directly connected to said impeller and which operates at speeds in excess of 35,000 rpm to provide a high performance vacuum/blower device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33236294A | 1994-10-31 | 1994-10-31 | |
| US332,362 | 1994-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2145562A1 true CA2145562A1 (en) | 1996-05-01 |
Family
ID=23297895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2145562 Abandoned CA2145562A1 (en) | 1994-10-31 | 1995-03-27 | High performance vacuum/blower device |
Country Status (2)
| Country | Link |
|---|---|
| BR (1) | BR9504131A (en) |
| CA (1) | CA2145562A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5855634A (en) * | 1997-06-24 | 1999-01-05 | Shop Vac Corporation | Filter retainer for a vacuum cleaner |
-
1995
- 1995-03-27 CA CA 2145562 patent/CA2145562A1/en not_active Abandoned
- 1995-09-22 BR BR9504131A patent/BR9504131A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5855634A (en) * | 1997-06-24 | 1999-01-05 | Shop Vac Corporation | Filter retainer for a vacuum cleaner |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9504131A (en) | 1997-04-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |