US20090126146A1 - Vacuum cleaner with heat sink in air path - Google Patents
Vacuum cleaner with heat sink in air path Download PDFInfo
- Publication number
- US20090126146A1 US20090126146A1 US12/243,287 US24328708A US2009126146A1 US 20090126146 A1 US20090126146 A1 US 20090126146A1 US 24328708 A US24328708 A US 24328708A US 2009126146 A1 US2009126146 A1 US 2009126146A1
- Authority
- US
- United States
- Prior art keywords
- heat sink
- assembly
- care appliance
- floor care
- wand
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/24—Hoses or pipes; Hose or pipe couplings
- A47L9/248—Parts, details or accessories of hoses or pipes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
- H05K7/20918—Forced ventilation, e.g. on heat dissipaters coupled to components the components being isolated from air flow, e.g. hollow heat sinks, wind tunnels or funnels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- FIG. 5 is a detailed cross sectional view illustrating the heat sink of FIG. 4 mounted on the conduit of FIG. 3 ;
- the electronic control 14 is secured to the heat sink 12 .
- the electronic control 14 comprises a printed circuit board 68 and an associated triac 70 .
- An electrical connector 72 connects the electronic control 14 to the main wiring harness (not shown) and the other appropriate electrical components of the vacuum cleaner 10 including, for example, the suction generator 24 .
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- Electric Vacuum Cleaner (AREA)
Abstract
A floor care appliance includes a nozzle assembly having a suction inlet, a canister assembly, a dirt collection vessel carried on the canister assembly, a suction generator carried on the canister assembly and a wand assembly connecting the nozzle assembly with the canister assembly. The wand assembly includes an inlet connected to the nozzle assembly, an outlet connected to the canister assembly and a conduit defining an air path between the inlet and the outlet. A heat sink carried on the wand assembly is provided in communication with the air path in the conduit. An electronic control is connected to the heat sink.
Description
- This application claims the benefit of U.S. Provisional Application Ser. No. 60/977,218 filed on 3 Oct. 2007.
- The present invention relates generally to the floor care equipment field and, more particularly to a floor care appliance incorporating a novel heat sink arrangement for dissipating heat produced by an electronic control.
- Upright and canister vacuum cleaners have long been known in the art to be useful for cleaning dirt and debris from bare floors, rugs, carpets and other above floor surfaces. Vacuum cleaners typically use a suction generator to draw dirt and debris into a dirt collection vessel such as a filter bag or dirt cup. The dirt collection vessel traps the dirt and relatively clean air is then returned to the environment. For most convenient operation, users typically wish to have the vacuum cleaner operating controls on the handle portion of the wand of a canister vacuum cleaner or the control handle of an upright vacuum cleaner. The present invention relates to a unique arrangement for dissipating heat typically produced by electronic controls such as those incorporating a circuit board and triac.
- In accordance with the purposes of the present invention as described herein, an improved floor care appliance is provided. The floor care appliance comprises a nozzle assembly including a suction inlet, a canister assembly, a dirt collection vessel carried on the canister assembly, a suction generator carried on the canister assembly and a wand assembly connecting the nozzle assembly with the canister assembly. The wand assembly includes an inlet connected to the nozzle assembly, an outlet connected to the canister assembly and a conduit defining an air path between the inlet and the outlet. A heat sink is carried on the wand assembly in communication with the air path in the conduit. An electronic control is connected to the heat sink.
- More specifically describing the invention, the wand assembly includes a handle section. The wand assembly may also include an optional telescoping section. Further, the wand assembly includes a hose section.
- The conduit includes a wall having an opening. The heat sink is received in the opening. In one possible embodiment the heat sink is flush with an interior surface of the conduit. In another embodiment, the heat sink projects from the interior surface of the conduit into the air path. The heat sink may be mounted to the wand assembly by a fastener, by friction fit, by an adhesive or any other appropriate means.
- Typically the heat sink includes an arcuate wall. In one possible embodiment the heat sink includes an arcuate wall having a first radius of curvature substantially equal to a second radius of curvature characteristic of the wall of the conduit.
- Still further describing features of the invention, the nozzle assembly includes a rotary agitator. The electronic control includes a circuit board, a triac or even a circuit board and a triac.
- In accordance with an additional aspect of the present invention a method is provided for cooling an electronic control on a vacuum cleaner including a wand assembly having a conduit defining an air path. The method comprises the steps of connecting the electronic control to a heat sink and securing the heat sink to the conduit so that the heat sink is in communication with the air path.
- In the following description there is shown and described one possible embodiment of this invention, simply by way of illustration of one of the modes best suited to carry out the invention. As it will be realized, the invention is capable of other different embodiments and its several details are capable of modification in various, obvious aspects all without departing from the invention. Accordingly, the drawings and descriptions will be regarded as illustrative in nature and not as restrictive.
- The accompanying drawings incorporated herein and forming a part of the specification, illustrate several aspects of the present invention and together with the description serve to explain certain principles of the invention. In the drawings:
-
FIG. 1 is a partially cut away perspective view of the floor care appliance, in this instance a canister vacuum cleaner, constructed in accordance with the teachings of the present invention; -
FIG. 2 is a top plan view, with cover removed, illustrating the internal structure of the canister assembly shown inFIG. 1 ; -
FIG. 3 is a detailed perspective view of the handle section of the wand assembly and, more particularly, the conduit which defines a portion of the air path; -
FIG. 4 is a detailed perspective view of the heat sink used in the present invention; -
FIG. 5 is a detailed cross sectional view illustrating the heat sink ofFIG. 4 mounted on the conduit ofFIG. 3 ; and -
FIG. 6 is a detailed perspective view of the structure illustrated inFIG. 5 . - Reference is now made in detail to the present invention, an example of which is illustrated in the accompanying drawings.
- Reference is now made to
FIG. 1 illustrating afloor care appliance 10 of the present invention. In the illustrated embodiment, thefloor care appliance 10 takes the form of a canister vacuum cleaner. Thecanister vacuum cleaner 10 incorporates a unique structural arrangement that allows aheat sink 12 to efficiently dissipate heat generated by an electronic controller 14 (see alsoFIGS. 2-5 ) in a manner to be described in greater detail below. - The
canister vacuum cleaner 10 includes acanister housing 16 that includes areceiver 18 for receiving adirt collection vessel 20 used to collect dirt and debris in a manner known in the art. As illustrated inFIG. 2 , thedirt collection vessel 20 is a filter bag. Alternatively, thedirt collection vessel 20 could take the form of a dirt cup (not shown). Such a dirt cup may include a cylindrical sidewall, a tangentially directed inlet and an axially directed outlet. Further a main, or primary filter may be provided in the dirt cup over the outlet. The filter may be cylindrically shaped and concentrically received within the sidewall of the dirt cup so as to provide an annular space therebetween. The tangentially directed inlet promotes cyclonic airflow within this annular space to enhance the cleaning efficiency of thecanister vacuum cleaner 10 equipped in this manner. - Referring back to drawing
FIG. 2 , thecanister housing 16 also includes acompartment 22 that receives asuction generator 24. Thecanister vacuum cleaner 10 further includes anozzle assembly 26. In the illustrated embodiment thenozzle assembly 26 includes asuction inlet 28, arotary agitator 30 extending across thesuction inlet 28, and anagitator drive motor 32. In the illustrated embodiment a belt (not shown) connects theagitator drive motor 32 to therotary agitator 30. It should be appreciated that alternative drive systems such as an all gear drive could also be utilized. - A wand assembly, generally designated by
reference numeral 36 connects thenozzle assembly 26 with thecanister assembly 16. More specifically, thewand assembly 36 includes aninlet end 38 connected to thenozzle assembly 26, anoutlet end 40 connected to thecanister assembly 16 and aconduit 42 defining an air path between the inlet and the outlet. More specifically, thewand assembly 36 includes ahandle section 44, awand section 46, which may include a telescoping feature in a manner known in the art, and aflexible hose section 48. Theconduit 42 extends through the handle, wand andhose sections - As best illustrated in
FIG. 3 ,handle section 44 includes aconduit wall 50 defining aninternal air path 52. Anopening 54 is provided in the conduit wall. Theopening 54 provides communication with theair path 52. As illustrated inFIG. 4 , theheat sink 12 includes anarcuate base 56 and an upstandingelectronic component support 58. In the illustrated embodiment, theheat sink 12 also includes a pair of opposed mounting lugs 60. Each mountinglug 60 includes anaperture 62. - As best illustrated in
FIGS. 5 and 6 , theheat sink 12 is mounted to theconduit wall 50. More specifically, thebase 56 of the heat sink is positioned in theopening 54 in theconduit wall 50. In the illustrated embodiment, thearcuate base 56 has a first radius of curvature that matches the radius of curvature of theconduit wall 50 and the base fits flush with the interior surface of theconduit 42. Fasteners such asscrews 64 are used to secure theheat sink 12 in theopening 54. More specifically, thescrews 64 extend through theapertures 62 in thelugs 60 and threadedly engage in thebosses 66 formed on theconduit 42 at opposite sides of theopening 54. - As further illustrated in
FIGS. 5 and 6 , theelectronic control 14 is secured to theheat sink 12. In the illustrated embodiment theelectronic control 14 comprises a printedcircuit board 68 and an associatedtriac 70. Anelectrical connector 72 connects theelectronic control 14 to the main wiring harness (not shown) and the other appropriate electrical components of thevacuum cleaner 10 including, for example, thesuction generator 24. - During operation of the
canister vacuum cleaner 10, dirt and debris is beaten from the nap of an underlying carpet by therotary agitator 30. That dirt and debris is then drawn into thesuction inlet 28 of thecanister vacuum cleaner 10 by operation of thesuction generator 24, which creates an air stream that entrains the dirt and debris. That air stream follows theair path 52 defined by theconduit 42 through thewand assembly 36. Eventually the air stream is delivered to thedirt collection vessel 20 where dirt and debris are captured and removed from the air stream. A clean air stream is then directed over the motor that drives thesuction generator 24 in order to provide cooling. The air stream is then directed through afinal filter 75 before being discharged back into the environment. - During operation of the
vacuum cleaner 10, waste heat is generated by theelectronic control 14 including, particularly, thetriac 70. As illustrated, thetriac 70 is mounted on thecomponent support 58 of theheat sink 12 by ascrew 74.Heat sink 12 is made from a material having a high thermal conductivity. Accordingly, theheat sink 12 functions to draw heat away from thetriac 70. Since thebase 56 of theheat sink 12 is received in theopening 54, the base of the heat sink is provided in fluid communication with theair path 52. Accordingly, the moving air stream functions to cool theheat sink 12 thereby removing the heat from the entireelectronic control 14 and, accordingly, thehandle section 44. This serves to increase operating comfort by eliminating any potential hot spots from thehandle section 44. - The foregoing description of the preferred embodiment of the present invention have been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Obvious modifications or variations are possible in light of the above teachings. For example, the
heat sink 12 may include a portion 76 (see phantom line shown inFIG. 5 ) that projects from the interior surface of theconduit 42 into theair path 52 in order to provide still better cooling efficiency. - The embodiment was chosen and described to provide the best illustration of the principles of the invention and its practical application to thereby enable one of ordinary skill in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the invention as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally and equitably entitled. The drawings and preferred embodiments do not and are not intended to limit the ordinary meaning of the claims in their fair and broad interpretation in any way.
Claims (18)
1. A floor care appliance, comprising:
a nozzle assembly including a suction inlet;
a canister assembly;
a dirt collection vessel carried on said canister assembly;
a suction generator carried on said canister assembly;
a wand assembly connecting said nozzle assembly with said canister assembly, said wand assembly including an inlet end connected to said nozzle assembly, an outlet end connected to said canister assembly and a conduit defining an air path between said inlet end and said outlet end;
a heat sink carried on said wand assembly in communication with said air path in said conduit; and
an electronic control connected to said heat sink.
2. The floor care appliance of claim 1 , wherein said wand assembly includes a handle section.
3. The floor care appliance of claim 2 , wherein said wand assembly includes a telescoping wand section.
4. The floor care appliance of claim 3 , wherein said wand assembly includes a hose section.
5. The floor care appliance of claim 2 , wherein said wand assembly includes a hose section.
6. The floor care appliance of claim 1 , wherein said conduit includes a wall having an opening and said heat sink is received in said opening.
7. The floor care appliance of claim 6 , wherein said heat sink is flush with an interior surface of said conduit.
8. The floor care appliance of claim 6 , wherein said heat sink projects from an interior surface of said conduit into said air path.
9. The floor care appliance of claim 1 , wherein said heat sink is mounted to said wand assembly by a fastener.
10. The floor care appliance of claim 1 , wherein, said heat sink is friction fit to said wand assembly.
11. The floor care appliance of claim 1 , wherein said heat sink is adhered to said wand assembly.
12. The floor care appliance of claim 1 , wherein said heat sink includes an arcuate base.
13. The floor care appliance of claim 6 , wherein said heat sink includes an arcuate wall having a first radius of curvature substantially equal to a second radius of curvature characteristic of said wall of said conduit.
14. The floor care appliance of claim 1 , wherein said nozzle assembly includes a rotary agitator.
15. The floor care appliance of claim 1 , wherein said electronic control includes a circuit board.
16. The floor care appliance of claim 1 , wherein said electronic control includes a triac.
17. The floor care appliance of claim 1 , wherein said electronic control includes a circuit board and a triac.
18. A method of cooling an electronic control on a vacuum cleaner including a wand assembly having a conduit defining an air path, said method comprising:
connecting said electronic control to a heat sink; and
securing said heat sink to said conduit of said wand so that said heat sink is in communication with said air path.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/243,287 US20090126146A1 (en) | 2007-10-03 | 2008-10-01 | Vacuum cleaner with heat sink in air path |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US97721807P | 2007-10-03 | 2007-10-03 | |
US12/243,287 US20090126146A1 (en) | 2007-10-03 | 2008-10-01 | Vacuum cleaner with heat sink in air path |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090126146A1 true US20090126146A1 (en) | 2009-05-21 |
Family
ID=40515018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/243,287 Abandoned US20090126146A1 (en) | 2007-10-03 | 2008-10-01 | Vacuum cleaner with heat sink in air path |
Country Status (2)
Country | Link |
---|---|
US (1) | US20090126146A1 (en) |
CA (1) | CA2640280A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8344289B2 (en) | 2010-04-21 | 2013-01-01 | Whirlpool Corporation | Terminal block cooling apparatus for an electric cooking range |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3263908A (en) * | 1964-05-15 | 1966-08-02 | Nat Union Electric Corp | Cooling arrangement for a vacuum cleaner motor or the like |
US5023973A (en) * | 1988-12-19 | 1991-06-18 | Sanyo Electric Co., Ltd. | Vacuum cleaner |
US5068555A (en) * | 1989-08-26 | 1991-11-26 | Oberdorfer Boegel Rainer | Dust exhauster for a vacuum cleaner having improved cooling |
US6105206A (en) * | 1999-04-13 | 2000-08-22 | Department Of Water And Power City Of Los Angeles | Portable electrically powered blower apparatus |
US6526622B2 (en) * | 2000-05-24 | 2003-03-04 | Fantom Technologies Inc. | Vacuum cleaner actuated by reconfiguration of the vacuum cleaner |
US20030140449A1 (en) * | 2002-01-25 | 2003-07-31 | Alton James R. | Vacuum cleaner nozzle assembly having edge-cleaning ducts |
US20030233730A1 (en) * | 2002-06-24 | 2003-12-25 | Electrolux Home Products, Inc. | Variable speed leaf blower |
US20040216266A1 (en) * | 2002-11-06 | 2004-11-04 | Wayne Conrad | Construction of a vacuum cleaner |
US20050097701A1 (en) * | 2002-10-17 | 2005-05-12 | Toshiba Tec Kabushiki Kaisha | Electric vacuum cleaner |
US7194784B2 (en) * | 2003-06-24 | 2007-03-27 | Panasonic Corporation Of North America | Floor cleaning apparatus with pivotal handle |
US7210197B2 (en) * | 2003-03-25 | 2007-05-01 | Panasonic Corporation Of North America | Nozzle assembly with air flow acceleration channels |
US7251858B2 (en) * | 2004-01-23 | 2007-08-07 | Panasonic Corporation Of North America | Floor care apparatus with multiple agitator speeds and constant suction power |
US20090094783A1 (en) * | 2007-10-11 | 2009-04-16 | Dudderar Raymond P | Fiberglass cloth tape laminated fiberboard barrier |
-
2008
- 2008-10-01 US US12/243,287 patent/US20090126146A1/en not_active Abandoned
- 2008-10-02 CA CA002640280A patent/CA2640280A1/en not_active Abandoned
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3263908A (en) * | 1964-05-15 | 1966-08-02 | Nat Union Electric Corp | Cooling arrangement for a vacuum cleaner motor or the like |
US5023973A (en) * | 1988-12-19 | 1991-06-18 | Sanyo Electric Co., Ltd. | Vacuum cleaner |
US5068555A (en) * | 1989-08-26 | 1991-11-26 | Oberdorfer Boegel Rainer | Dust exhauster for a vacuum cleaner having improved cooling |
US6105206A (en) * | 1999-04-13 | 2000-08-22 | Department Of Water And Power City Of Los Angeles | Portable electrically powered blower apparatus |
US6526622B2 (en) * | 2000-05-24 | 2003-03-04 | Fantom Technologies Inc. | Vacuum cleaner actuated by reconfiguration of the vacuum cleaner |
US7134164B2 (en) * | 2002-01-25 | 2006-11-14 | Alton James R | Vacuum cleaner nozzle assembly having edge-cleaning ducts |
US20030140449A1 (en) * | 2002-01-25 | 2003-07-31 | Alton James R. | Vacuum cleaner nozzle assembly having edge-cleaning ducts |
US20030233730A1 (en) * | 2002-06-24 | 2003-12-25 | Electrolux Home Products, Inc. | Variable speed leaf blower |
US20050097701A1 (en) * | 2002-10-17 | 2005-05-12 | Toshiba Tec Kabushiki Kaisha | Electric vacuum cleaner |
US20040216266A1 (en) * | 2002-11-06 | 2004-11-04 | Wayne Conrad | Construction of a vacuum cleaner |
US7210197B2 (en) * | 2003-03-25 | 2007-05-01 | Panasonic Corporation Of North America | Nozzle assembly with air flow acceleration channels |
US7194784B2 (en) * | 2003-06-24 | 2007-03-27 | Panasonic Corporation Of North America | Floor cleaning apparatus with pivotal handle |
US7251858B2 (en) * | 2004-01-23 | 2007-08-07 | Panasonic Corporation Of North America | Floor care apparatus with multiple agitator speeds and constant suction power |
US20090094783A1 (en) * | 2007-10-11 | 2009-04-16 | Dudderar Raymond P | Fiberglass cloth tape laminated fiberboard barrier |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8344289B2 (en) | 2010-04-21 | 2013-01-01 | Whirlpool Corporation | Terminal block cooling apparatus for an electric cooking range |
Also Published As
Publication number | Publication date |
---|---|
CA2640280A1 (en) | 2009-04-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PANASONIC CORPORATION OF NORTH AMERICA, NEW JERSEY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OVERVAAG, CHAD D.;CLOUD, JOHN A., III;DAVIS, RONALD E.;AND OTHERS;REEL/FRAME:022031/0978;SIGNING DATES FROM 20080812 TO 20081215 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |