US3510904A - Thermal control means for a cleaner assembly - Google Patents

Thermal control means for a cleaner assembly Download PDF

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Publication number
US3510904A
US3510904A US685531A US3510904DA US3510904A US 3510904 A US3510904 A US 3510904A US 685531 A US685531 A US 685531A US 3510904D A US3510904D A US 3510904DA US 3510904 A US3510904 A US 3510904A
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US
United States
Prior art keywords
motor
thermostat
air
assembly
cleaner assembly
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.)
Expired - Lifetime
Application number
US685531A
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English (en)
Inventor
Robert C Lagerstrom
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
White Consolidated Industries Inc
Original Assignee
National Union Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by National Union Electric Corp filed Critical National Union Electric Corp
Application granted granted Critical
Publication of US3510904A publication Critical patent/US3510904A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2889—Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
    • 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/19—Means for monitoring filtering operation
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805—Parameters or conditions being sensed
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2842—Suction motors or blowers
    • 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
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays

Definitions

  • suction cleaner assembly having a thermally responsive device or sensor unit for sensing when the cleaner assembly is overheating and for disabling the cleaner assembly when it becomes overheated.
  • Another object of this invention is to provide a suction cleaner assembly having a plastic housing which is protected against overheating by a thermally responsive device which disables a suction unit mounted on the housing when the housing begins to overheat.
  • Another object of this invention is to provide a suction cleaner assembly including a thermally responsive device mounted in a flow of exhaust air from a fan assembly for sensing when the cleaner assembly is being overheated.
  • FIG. 1 is a partially broken away top plan view of a cleaner assembly forming an illustrative embodiment of the invention
  • FIG. 3 is a top plan view of a base plate assembly used in the cleaner assembly of FIG. 1;
  • the thermostat is particularly advantageous since the suction unit 12 is mounted in a casing or housing 26 formed of a molded thermoplastic material which fuses or softens if the suction unit is overheated for an extended period of time.
  • An indicator or warning light 28 (see FIG. 2) is connected to the thermostat 22 to indicate to an operator when the suction unit 12 is overheated.
  • thermoplastic base section 30 since the torque exerted by the motor 46 can readily twist the motor loose if the mounting wall begins to overheat stops the generation of heat by the motor before sufficient heat is conducted to the housing 26 to weaken or otherwise damage the housing.
  • the thermostat 22 is mounted on a support member or bracket 54 of the base plate assembly 20.
  • the thermostat 22 is positioned on the bracket 54 directly beneath and spaced apart from the motor 46 in a path of flow of exhaust air from the motor. Positioning the thermostat 22 in the path of flow of air from the motor 46 enables the thermostat to immediately sense when the motor is beginning to overheat. This high degree of sensitivity results from the fact that the air is used to cool the motor as it flows through the motor. Consequently, as soon as the motor 46 begins to overheat the air is heated above its normal temperature as it flows through the motor and subsequently actuates the thermostat 22.
  • the thermostat 22 is of the bimetallic type and is actuated to an open position at a temperature of approximately 165 F.
  • the thermostat is actuated to the closed position at a temperature of slightly above 120 F.
  • the difference between the opening and closing temperatures for the thermostat 22 insures that the motor 46 and housing 26 are relatively cool before the motor is again energized after it has once started to overheat.
  • the preceding operating or actuation temperatures are to be considered as merely being illustrative of one embodiment of the invention and the invention should not be considered as restricted to the particular temperatures given.
  • the indicator light 28 is included in the circuitry 50 (see FIG. and is mounted on the base section 30 of the housing 26 (see FIG. 2) where it can be easily seen by an operator of the cleaner assembly.
  • the indicator light 28 is of the well known, commercially available, high resistance type and is connected in parallel with the thermostat 22 by leads 60 and 62.
  • the thermostat 22 is in the closed position, the relatively high resistance of the indicator light 28 and low resistance of the thermostat 22 results in most of the current flowing through the thermostat 22 while a very small amount of current flows through the indicator light 28. This small amount of current is insufiicient to energize the indicator light 28.
  • the circuitry 50 also includes a plug 64 and a cord 66 which are indicated schematically in FIG. 5.
  • the cord 66 has a relatively long length and is connected to a cord reel assembly 70 (see FIGS. 2 and 4) which is mounted on the support bracket 54 by a central spindle or connector 71.
  • the cord reel assembly 10 includes a central sheave or drum which cooperates with a spring (not shown) in a known manner to wind up the cord 66 when an actuator lever 72 is depressed.
  • the mounting of both the cord reel assembly 70 and the thermostat 22 on the support bracket 54 enables the base plate assembly to be completely assembly with the thermostat connected to the cord 66 before the base plate assembly is mounted on the casing or housing 26.
  • the motor 46 is energized only when both the switch 74 and thermostat 22 are closed.
  • the high resistance indicator light 28 limits the flow of current to a value which is sufiicient to energize the indicator light 28 and insufficient to energize the motor 46.
  • the switch 74 is open, neither the indicator light 28 nor the motor 46 can be energized.
  • the plug 64 will be connected to a suitable source of electrical energy and the motor 46 of the suction unit 12 will be energized upon actuation of the on-off switch 74 to the closed position.
  • the fan 44 will then be operated by the motor 46 to draw air entrained dirt and other particles into the filter bag 16 in the housing 26.
  • the air will be drawn through the porous sidewalls of the filter bag 16 into the fan 44, the dirt and other particles being trapped within the filter bag 16.
  • the filtered air will flow from the fan through the motor 46, into the exhaust chambers 40 and out the exhaust port 18 to the surrounding atmosphere.
  • the thermostat 22 When the temperature of the air in the exhaust chamber has fallen below a predetermined temperature and the cleaner assembly 10 has cooled back to a normal or acceptable operating temperature, the thermostat 22 will move from the open position to the closed position to enable the motor 46 to again be energized. Thus, the thermostat 22 protects the thermoplastic housing 26 against being overheated, that is the thermostat 22 prevents the housing 26 from being heated to a temperature at which the housing will have insufficient strength to support the suction unit 12.
  • the thermostat 22 in a spaced apart relationship with both the housing 26 and the suction unit 12 so that the thermostat 22 is in the path of flow of air from the suction unit 12 and is operative when the air from the suction unit exceeds a predetermined temperature.
  • a thermostat for a vacuum cleaner could, if desired, be mounted directly on the cleaner housing or could also be included in the motor.
  • a cleaner assembly having a combination motor and thermostat is both difficult and expensive to service since if either the thermostat or motor should fail, it is necessary to replace both the motor and thermostat with a particular combination motor and thermostat.
  • the mounting of the thermostat 22 on the base plate assembly 20, in accordance with the present invention facilitates easy and rapid replacement of the thermostat.
  • a suction cleaner assembly 10 having a plastic housing 26 which is protected against overheating by a thermally responsive unit or thermostat 22.
  • the thermostat 22 is mounted in a path of flow of exhaust air from a fan and motor assembly or suction unit 12 to disable the motor 46 when the air exceeds a predetermined temperature indicative of an overheating of the motor.
  • An indicator light 28 has been provided to indicate to an operator of the cleaner assembly 10 when the suction unit 12 is disabled by the thermostat 22.
  • a suction cleaner having a casing with an air 6 inlet and filter means connected to the inlet, the imsaid-base plate assembly being adapted to be completely provement which comprises, in combination: assembled with said control switch and said thermala support portion on the casing, said casing including 1y responsive device connected in said circuitry said support portion being formed of a thermobefore said base plate assembly 1s mounted on said plastic material having a tendency to soften at an 5 casing. elevated temperature; 2.
  • the structure of claim 1 further charactenzed 1n a motor-fan unit connected to said support portion; that said base plate assembly includes a bracket member a base plate assembly connected to said casing and extending across said exhaust chamber and having said having a portion spaced fro s id support portion thermally responsive device mounted thereon.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Electric Suction Cleaners (AREA)
US685531A 1967-11-24 1967-11-24 Thermal control means for a cleaner assembly Expired - Lifetime US3510904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68553167A 1967-11-24 1967-11-24

Publications (1)

Publication Number Publication Date
US3510904A true US3510904A (en) 1970-05-12

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ID=24752603

Family Applications (1)

Application Number Title Priority Date Filing Date
US685531A Expired - Lifetime US3510904A (en) 1967-11-24 1967-11-24 Thermal control means for a cleaner assembly

Country Status (6)

Country Link
US (1) US3510904A (en:Method)
BE (1) BE718612A (en:Method)
DE (1) DE1703798A1 (en:Method)
FR (1) FR1575162A (en:Method)
GB (1) GB1162730A (en:Method)
NL (1) NL6810598A (en:Method)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3716967A (en) * 1970-09-11 1973-02-20 Anti Pollution Devices Inc Filtering apparatus
US3766595A (en) * 1970-10-23 1973-10-23 Dynamics Corp America Filter bag condition signal for vacuum cleaner
US4642128A (en) * 1985-09-11 1987-02-10 Xanar, Inc. Smoke evacuator system with electronic control circuitry
US4739535A (en) * 1986-03-06 1988-04-26 Schuld Ernest R Vacuum cleaning machine
US4807590A (en) * 1988-03-16 1989-02-28 Evans Wendell K Fireplace vacuum system
EP0376651A1 (en) * 1988-12-28 1990-07-04 Sanyo Electric Co., Ltd. Vacuum cleaner
USD378152S (en) * 1995-10-30 1997-02-18 Black & Decker Inc. Vacuum cleaner
US5701631A (en) * 1995-10-25 1997-12-30 Aktiebolaget Electrolux Cooling arrangement for power components in a vacuum cleaner
US6085382A (en) * 1997-01-10 2000-07-11 White Consolidated Industries, Inc. Air filtrating self-propelled upright vacuum cleaner
US6351872B1 (en) 1999-07-16 2002-03-05 Matsushita Electric Corporation Of America Agitator motor projection system for vacuum cleaner
US20050198764A1 (en) * 2002-09-14 2005-09-15 Dyson Technology Limited Cleaning appliance
US20060085943A1 (en) * 2002-09-14 2006-04-27 Dyson Technology Limited Cleaning appliance including a tellscopic wand assembly retaining means
US20060162396A1 (en) * 2005-01-21 2006-07-27 Euro-Pro Corporation Steamer with wrapped cord and hose
US20070119015A1 (en) * 2005-05-17 2007-05-31 Stuart Leslie Portable vacuum cleaner and method for storing a vacuum hose
US20080301899A1 (en) * 2007-06-08 2008-12-11 Tacony Corporation Vacuum Cleaner with Sensing System
US20090094783A1 (en) * 2007-10-11 2009-04-16 Dudderar Raymond P Fiberglass cloth tape laminated fiberboard barrier
US20140047665A1 (en) * 2011-03-23 2014-02-20 Techtronic Floor Care Technology Limited Suction cleaner
US9107550B2 (en) 2013-09-27 2015-08-18 Black & Decker Inc. Compact vacuum and sander

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4571771A (en) * 1984-08-27 1986-02-25 Tennant Company Sweeper with fire control

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625239A (en) * 1948-05-15 1953-01-13 Edgar P Senne Vacuum cleaner mechanism responsive to thermal effects of filter bag filling
US2978732A (en) * 1957-09-24 1961-04-11 Whirlpool Co Vacuum cleaner
US2997728A (en) * 1958-04-01 1961-08-29 Electrolux Ab Vacuum cleaner
US3334370A (en) * 1964-11-17 1967-08-08 Gen Electric Lightweight portable vacuum cleaner
US3375541A (en) * 1966-06-24 1968-04-02 Singer Co Vacuum cleaners with combined hose connectors and housing latches

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625239A (en) * 1948-05-15 1953-01-13 Edgar P Senne Vacuum cleaner mechanism responsive to thermal effects of filter bag filling
US2978732A (en) * 1957-09-24 1961-04-11 Whirlpool Co Vacuum cleaner
US2997728A (en) * 1958-04-01 1961-08-29 Electrolux Ab Vacuum cleaner
US3334370A (en) * 1964-11-17 1967-08-08 Gen Electric Lightweight portable vacuum cleaner
US3375541A (en) * 1966-06-24 1968-04-02 Singer Co Vacuum cleaners with combined hose connectors and housing latches

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3716967A (en) * 1970-09-11 1973-02-20 Anti Pollution Devices Inc Filtering apparatus
US3766595A (en) * 1970-10-23 1973-10-23 Dynamics Corp America Filter bag condition signal for vacuum cleaner
US4642128A (en) * 1985-09-11 1987-02-10 Xanar, Inc. Smoke evacuator system with electronic control circuitry
US4739535A (en) * 1986-03-06 1988-04-26 Schuld Ernest R Vacuum cleaning machine
US4807590A (en) * 1988-03-16 1989-02-28 Evans Wendell K Fireplace vacuum system
EP0376651A1 (en) * 1988-12-28 1990-07-04 Sanyo Electric Co., Ltd. Vacuum cleaner
US5701631A (en) * 1995-10-25 1997-12-30 Aktiebolaget Electrolux Cooling arrangement for power components in a vacuum cleaner
USD378152S (en) * 1995-10-30 1997-02-18 Black & Decker Inc. Vacuum cleaner
US6553611B2 (en) 1997-01-10 2003-04-29 White Consolidated Industries, Inc. Vacuum cleaner with thermal cutoff
US6308374B1 (en) 1997-01-10 2001-10-30 White Consolidated Industries, Inc. Air filtering self-propelled upright vacuum cleaner
US6484352B2 (en) * 1997-01-10 2002-11-26 White Consolidated Industries, Inc. Vacuum cleaner with thermal cutoff
US6085382A (en) * 1997-01-10 2000-07-11 White Consolidated Industries, Inc. Air filtrating self-propelled upright vacuum cleaner
US6351872B1 (en) 1999-07-16 2002-03-05 Matsushita Electric Corporation Of America Agitator motor projection system for vacuum cleaner
US7877837B2 (en) 2002-09-14 2011-02-01 Dyson Technology Limited Cleaning appliance including a telescopic wand assembly retainer
US20060085943A1 (en) * 2002-09-14 2006-04-27 Dyson Technology Limited Cleaning appliance including a tellscopic wand assembly retaining means
US20050198764A1 (en) * 2002-09-14 2005-09-15 Dyson Technology Limited Cleaning appliance
US20060162396A1 (en) * 2005-01-21 2006-07-27 Euro-Pro Corporation Steamer with wrapped cord and hose
US7487651B2 (en) * 2005-01-21 2009-02-10 Euro-Pro Operating, Llc Steamer with wrapped cord and hose
US20070119015A1 (en) * 2005-05-17 2007-05-31 Stuart Leslie Portable vacuum cleaner and method for storing a vacuum hose
US20080301899A1 (en) * 2007-06-08 2008-12-11 Tacony Corporation Vacuum Cleaner with Sensing System
US7627927B2 (en) 2007-06-08 2009-12-08 Tacony Corporation Vacuum cleaner with sensing system
US20090094783A1 (en) * 2007-10-11 2009-04-16 Dudderar Raymond P Fiberglass cloth tape laminated fiberboard barrier
US20140047665A1 (en) * 2011-03-23 2014-02-20 Techtronic Floor Care Technology Limited Suction cleaner
US9492047B2 (en) * 2011-03-23 2016-11-15 Techtronic Floor Care Technology Limited Suction cleaner
US9107550B2 (en) 2013-09-27 2015-08-18 Black & Decker Inc. Compact vacuum and sander

Also Published As

Publication number Publication date
GB1162730A (en) 1969-08-27
FR1575162A (en:Method) 1969-07-18
DE1703798A1 (de) 1972-02-17
NL6810598A (en:Method) 1969-05-28
BE718612A (en:Method) 1969-01-27

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