EP3413771A1 - A vacuum cleaner with improved operational performance - Google Patents

A vacuum cleaner with improved operational performance

Info

Publication number
EP3413771A1
EP3413771A1 EP17702884.2A EP17702884A EP3413771A1 EP 3413771 A1 EP3413771 A1 EP 3413771A1 EP 17702884 A EP17702884 A EP 17702884A EP 3413771 A1 EP3413771 A1 EP 3413771A1
Authority
EP
European Patent Office
Prior art keywords
air channel
vacuum cleaner
heat exchanger
suction inlet
circuit board
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.)
Withdrawn
Application number
EP17702884.2A
Other languages
German (de)
French (fr)
Inventor
Alper Yagci
Deha GULSEN
Cetin Aydintug
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP3413771A1 publication Critical patent/EP3413771A1/en
Withdrawn legal-status Critical Current

Links

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
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
    • 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
    • A47L9/02—Nozzles

Definitions

  • the present invention relates to a vacuum cleaner wherein the air flow or the vacuum effect created by the motor is delivered to the dirt collecting chamber by means of an air channel opening to the motor suction inlet.
  • the circuit board where on the power electronics and the control unit are disposed, heats up due to the operation of the motor.
  • heat exchangers providing the cooling of the circuit board are provided.
  • the heat exchanger should be disposed at a position subjected to an air flow.
  • disposing the heat exchanger at a position on the air flow provided by the motor may adversely affect the operational performance of the vacuum cleaner and moreover may cause the vacuum cleaner to operate in a noisier manner. It is a desired feature that the circuit board is cooled without adversely affecting the operation of the vacuum cleaner and increasing the noise level.
  • a vacuum cleaner is disposed, that comprises a heat exchanger disposed at the exhaust outlet and providing the cooling of the circuit board.
  • a vacuum cleaner that comprises a vortex stabilizer stabilizing the vortexes generated at the motor suction port.
  • a vacuum cleaner is disposed, that comprises a wall arranged at the inlet of the air channel and eliminating the vortexes generated in the air flow.
  • the aim of the present invention is the realization of a vacuum cleaner wherein the circuit board controlling the same is efficiently cooled.
  • the vacuum cleaner realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises at least one opening that is arranged at the upper wall of the air channel, whereon the motor suction inlet is arranged, and a heat exchanger that passes through the opening as connected to the circuit board and that provides the cooling of the circuit board.
  • the heat exchanger extends up to the motor suction inlet and eliminates the vortexes generated at the suction inlet. Thus, a linear air flow is obtained in the air channel.
  • the heat exchanger has at least one plate extending into the air channel. More than one plate can be used in order to increase the surface area of the heat exchanger, in contact with the cool air inside the air channel.
  • the heat exchanger is produced from metal material.
  • the heat exchanger is preferably produced from aluminum as the state of the heat exchangers.
  • the air flow rate in the air channel is prevented from decreasing.
  • the circuit board is efficiently cooled by means of the heat exchanger that is disposed on the air channel through which cool air is taken into the vacuum cleaner.
  • the performance of the vacuum cleaner is prevented from decreasing.
  • Figure 1 – is the cross-sectional view of a vacuum cleaner.
  • Figure 2 – is the cross-sectional view of a vacuum cleaner in an embodiment of the present invention.
  • Figure 3 – is the cross-sectional view of a vacuum cleaner in a different embodiment of the present invention.
  • Figure 4 – is the perspective view of the circuit board in another embodiment of the present invention.
  • the vacuum cleaner (1) comprises a body (2), a dirt collecting chamber (3) that is disposed in the body (2), a motor (4) that is disposed in the body (2) and that has a suction inlet (5), and an air channel (6) that is preferably arranged on the suction inlet (5), with one end of the air channel (6) opening to the suction inlet (5) and the other end thereof opening to the dirt collecting chamber (3) ( Figure 1).
  • the air inside the air channel (6) is sucked into the suction inlet (5) as the motor (4) is operated.
  • a vacuum effect is generated in the dirt collecting chamber (3).
  • the user carries out the cleaning process by means of the hose (not shown in the figures) connected to the dirt collecting chamber (3).
  • the vacuum cleaner (1) of the present invention comprises a circuit board (7) that is disposed on the air channel (6), at least one opening (8) that is arranged on the upper wall of the air channel (6), and a heat exchanger (9) that extends through the opening (8) into the air channel (6) as connected to the circuit board (7) and that provides the cooling of the circuit board (7) ( Figure 2).
  • the circuit board (7) is positioned over the air channel (6) where the motor (4) suction inlet (5) is arranged.
  • the heat exchanger (9) used for cooling the circuit board (7) extends into the air channel (6).
  • the motor (4) rotates at high speeds and sucks in the air in the air channel (6) through the suction inlet (5).
  • a high-speed air flow is created in the air channel (6).
  • the air sucked from the air channel (6) is relatively cooler since it does not pass through the motor (4) yet.
  • the heat generated on the circuit board (7) is transferred onto the heat exchanger (9).
  • the heat exchanger (9) extends up to the suction inlet (5) through the air channel (6) and prevents the formation of turbulence at the suction inlet (5).
  • a vortex-like air flow is generated at the suction inlet (5) due to the rotor rotating at high speeds around itself in the motor (4).
  • the heat exchanger (9) extending up to the suction inlet (5), the vortexes at the suction inlet (5) are eliminated or reduced into smaller vortexes.
  • a linear air flow is created inside the air channel (6) from the dirt collecting chamber (3) towards the suction inlet (5). This both improves the operational performance of the vacuum cleaner (1) and reduces the noise level of the vortexes.
  • the heat exchanger (9) comprises at least one plate (10) extending into the air channel (6).
  • the heat exchanger (9) is fixed onto the electronic components heating up on the circuit board (7).
  • a paste increasing the heat transfer is used between the electronic components and the heat exchanger (9).
  • the area of the surface of the heat exchanger (9) in contact with the cool air should be increased.
  • the heat exchanger (9) is produced from metal material.
  • the heat transfer is maximized by using a metal with high thermal conductivity coefficient as the heat exchanger (9).
  • the vacuum cleaner (1) comprises a gasket (11) that is disposed at the edge of the opening (8) and that provides leak-proofing of the air channel (6).
  • the gasket (11) By means of the gasket (11), the air flow rate inside the air channel (6) is prevented from decreasing.
  • the heat exchanger (9) providing the cooling of the circuit board (7) can be positioned so as to be inside the air channel (6) and to be in contact with the cool air. Moreover, as the plates (10) of the heat exchanger (9) extend up to the motor (4) suction inlet (5), a relatively linear air flow is provided in the air channel (6) and moreover the noise level is decreased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Electric Suction Cleaners (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Abstract

The present invention relates to a vacuum cleaner (1) comprising a body (2), a dirt collecting chamber (3) that is disposed in the body (2), a motor (4) that is disposed in the body (2) and that has a suction inlet (5), and an air channel (6) that is arranged on the suction inlet (5), with one end of the air channel (6) opening to the suction inlet (5) and the other end thereof opening to the dirt collecting chamber (3).

Description

    A VACUUM CLEANER WITH IMPROVED OPERATIONAL PERFORMANCE
  • The present invention relates to a vacuum cleaner wherein the air flow or the vacuum effect created by the motor is delivered to the dirt collecting chamber by means of an air channel opening to the motor suction inlet.
  • Especially in vacuum cleaners with dust bag, the circuit board, where on the power electronics and the control unit are disposed, heats up due to the operation of the motor. On the circuit board heat exchangers providing the cooling of the circuit board are provided. For an efficient cooling operation, the heat exchanger should be disposed at a position subjected to an air flow. However, disposing the heat exchanger at a position on the air flow provided by the motor may adversely affect the operational performance of the vacuum cleaner and moreover may cause the vacuum cleaner to operate in a noisier manner. It is a desired feature that the circuit board is cooled without adversely affecting the operation of the vacuum cleaner and increasing the noise level.
  • In the state of the art European Patent Application No. EP2077089, a vacuum cleaner is disposed, that comprises a heat exchanger disposed at the exhaust outlet and providing the cooling of the circuit board.
  • In the state of the art United States Patent Application No. US2008047091, a vacuum cleaner is disclosed, that comprises a vortex stabilizer stabilizing the vortexes generated at the motor suction port.
  • In the state of the art Japanese Patent Application No. JP2000316766, a vacuum cleaner is disposed, that comprises a wall arranged at the inlet of the air channel and eliminating the vortexes generated in the air flow.
  • The aim of the present invention is the realization of a vacuum cleaner wherein the circuit board controlling the same is efficiently cooled.
  • The vacuum cleaner realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises at least one opening that is arranged at the upper wall of the air channel, whereon the motor suction inlet is arranged, and a heat exchanger that passes through the opening as connected to the circuit board and that provides the cooling of the circuit board.
  • In an embodiment of the present invention, the heat exchanger extends up to the motor suction inlet and eliminates the vortexes generated at the suction inlet. Thus, a linear air flow is obtained in the air channel.
  • In another embodiment of the present invention, the heat exchanger has at least one plate extending into the air channel. More than one plate can be used in order to increase the surface area of the heat exchanger, in contact with the cool air inside the air channel.
  • In another embodiment of the present invention, the heat exchanger is produced from metal material. For an efficient heat transfer, the heat exchanger is preferably produced from aluminum as the state of the heat exchangers.
  • In another embodiment of the present invention, by means of a gasket that is disposed on the edges of the opening and that fills the gap between the opening and the plates of the heat exchanger, the air flow rate in the air channel is prevented from decreasing.
  • By means of the present invention, the circuit board is efficiently cooled by means of the heat exchanger that is disposed on the air channel through which cool air is taken into the vacuum cleaner. Thus, in cases of long usages or in case the circuit board is subjected to excessive load, the performance of the vacuum cleaner is prevented from decreasing.
  • The vacuum cleaner realized in order to attain the aim of the present invention is illustrated in the attached figures where
  • Figure 1 – is the cross-sectional view of a vacuum cleaner.
  • Figure 2 – is the cross-sectional view of a vacuum cleaner in an embodiment of the present invention.
  • Figure 3 – is the cross-sectional view of a vacuum cleaner in a different embodiment of the present invention.
  • Figure 4 – is the perspective view of the circuit board in another embodiment of the present invention.
  • The elements illustrated in the figures are numbered as follows:
    1. Vacuum cleaner
    2. Body
    3. Dirt collecting chamber
    4. Motor
    5. Suction inlet
    6. Air channel
    7. Circuit board
    8. Opening
    9. Heat exchanger
    10. Plate
    11. Gasket
  • The vacuum cleaner (1) comprises a body (2), a dirt collecting chamber (3) that is disposed in the body (2), a motor (4) that is disposed in the body (2) and that has a suction inlet (5), and an air channel (6) that is preferably arranged on the suction inlet (5), with one end of the air channel (6) opening to the suction inlet (5) and the other end thereof opening to the dirt collecting chamber (3) (Figure 1).
  • In the vacuum cleaner (1), the air inside the air channel (6) is sucked into the suction inlet (5) as the motor (4) is operated. As one end of the air channel (6) opens into the dirt collecting chamber (3), a vacuum effect is generated in the dirt collecting chamber (3). The user carries out the cleaning process by means of the hose (not shown in the figures) connected to the dirt collecting chamber (3).
  • The vacuum cleaner (1) of the present invention comprises a circuit board (7) that is disposed on the air channel (6), at least one opening (8) that is arranged on the upper wall of the air channel (6), and a heat exchanger (9) that extends through the opening (8) into the air channel (6) as connected to the circuit board (7) and that provides the cooling of the circuit board (7) (Figure 2).
  • In the vacuum cleaner (1) of the present invention, the circuit board (7) is positioned over the air channel (6) where the motor (4) suction inlet (5) is arranged. By means of the opening (8) opening to the upper wall of the air channel (6), the heat exchanger (9) used for cooling the circuit board (7) extends into the air channel (6). The motor (4) rotates at high speeds and sucks in the air in the air channel (6) through the suction inlet (5). Thus, a high-speed air flow is created in the air channel (6). Moreover, the air sucked from the air channel (6) is relatively cooler since it does not pass through the motor (4) yet. The heat generated on the circuit board (7) is transferred onto the heat exchanger (9). As the motor (4) is operated, a cool air flow is obtained in the air channel (6) and heat transfer is realized between the surfaces of the heat exchanger (9) and the air flow. Thus, the heat exchanger (9) with the surface thereof being cooled draws more heat from the circuit board (7), thereby providing the cooling of the circuit board (7).
  • In an embodiment of the present invention, the heat exchanger (9) extends up to the suction inlet (5) through the air channel (6) and prevents the formation of turbulence at the suction inlet (5). As the motor (4) is operated, a vortex-like air flow is generated at the suction inlet (5) due to the rotor rotating at high speeds around itself in the motor (4). By means of the heat exchanger (9) extending up to the suction inlet (5), the vortexes at the suction inlet (5) are eliminated or reduced into smaller vortexes. Thus, a linear air flow is created inside the air channel (6) from the dirt collecting chamber (3) towards the suction inlet (5). This both improves the operational performance of the vacuum cleaner (1) and reduces the noise level of the vortexes.
  • In another embodiment of the present invention, the heat exchanger (9) comprises at least one plate (10) extending into the air channel (6). The heat exchanger (9) is fixed onto the electronic components heating up on the circuit board (7). Preferably a paste increasing the heat transfer is used between the electronic components and the heat exchanger (9). In order to increase the heat transfer with the cool air inside the air channel (6), the area of the surface of the heat exchanger (9) in contact with the cool air should be increased. On the upper wall of the air channel (6) there are openings (8) as much as the plates (10) on the heat exchanger (9) and the plates (10) pass through the openings (8) and extend into the air channel (6).
  • In another embodiment of the present invention, the heat exchanger (9) is produced from metal material. The heat transfer is maximized by using a metal with high thermal conductivity coefficient as the heat exchanger (9).
  • In another embodiment of the present invention, the vacuum cleaner (1) comprises a gasket (11) that is disposed at the edge of the opening (8) and that provides leak-proofing of the air channel (6). By means of the gasket (11), the air flow rate inside the air channel (6) is prevented from decreasing.
  • In the vacuum cleaner (1) of the present invention, by means of the opening (8) arranged on the upper wall of the air channel (6), the heat exchanger (9) providing the cooling of the circuit board (7) can be positioned so as to be inside the air channel (6) and to be in contact with the cool air. Moreover, as the plates (10) of the heat exchanger (9) extend up to the motor (4) suction inlet (5), a relatively linear air flow is provided in the air channel (6) and moreover the noise level is decreased.

Claims (5)

  1. A vacuum cleaner (1) comprising a body (2), a dirt collecting chamber (3) that is disposed in the body (2), a motor (4) that is disposed in the body (2) and that has a suction inlet (5), and an air channel (6) that is preferably arranged on the suction inlet (5), with one end of the air channel (6) opening to the suction inlet (5) and the other end thereof opening to the dirt collecting chamber (3), characterized by
    - a circuit board (7) that is disposed on the air channel (6),
    - at least one opening (8) that is arranged on the upper wall of the air channel (6), and
    - a heat exchanger (9) that extends through the opening (8) into the air channel (6) as connected to the circuit board (7) and that provides the cooling of the circuit board (7).
  2. A vacuum cleaner (1) as in Claim 1, characterized by the heat exchanger (9) that extends up to the suction inlet (5) through the air channel (6) and prevents the formation of turbulence at the suction inlet (5).
  3. A vacuum cleaner (1) as in Claim 1 or 2, characterized by the heat exchanger (9) that has at least one plate (10) extending into the air channel (6).
  4. A vacuum cleaner (1) as in Claim 1 or 2, characterized by the heat exchanger (9) that is produced from metal material.
  5. A vacuum cleaner (1) as in any one of the above claims, characterized by a gasket (11) that is disposed at the edge of the opening (8) and that provides leak-proofing of the air channel (6).
EP17702884.2A 2016-02-09 2017-02-03 A vacuum cleaner with improved operational performance Withdrawn EP3413771A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2016/01673A TR201601673A2 (en) 2016-02-09 2016-02-09 AN ELECTRIC SWEEPER WITH IMPROVED OPERATIONAL PERFORMANCE
PCT/EP2017/052418 WO2017137329A1 (en) 2016-02-09 2017-02-03 A vacuum cleaner with improved operational performance

Publications (1)

Publication Number Publication Date
EP3413771A1 true EP3413771A1 (en) 2018-12-19

Family

ID=57960465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17702884.2A Withdrawn EP3413771A1 (en) 2016-02-09 2017-02-03 A vacuum cleaner with improved operational performance

Country Status (3)

Country Link
EP (1) EP3413771A1 (en)
TR (1) TR201601673A2 (en)
WO (1) WO2017137329A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3928313A1 (en) * 1989-08-26 1991-02-28 Wap Reinigungssysteme DIRT CLEANER
JPH07136083A (en) * 1993-11-19 1995-05-30 Sanyo Electric Co Ltd Vacuum cleaner
JP3186009B2 (en) * 1994-07-28 2001-07-11 東芝テック株式会社 Electric vacuum cleaner
JP3515405B2 (en) * 1999-02-02 2004-04-05 シャープ株式会社 Electric vacuum cleaner
JP2000316766A (en) 1999-05-10 2000-11-21 Yoshio Shimizu Vacuum cleaner
JP2006288801A (en) * 2005-04-12 2006-10-26 Toshiba Tec Corp Radiator and electrical equipment
US7811349B2 (en) 2005-07-12 2010-10-12 Bissell Homecare, Inc. Vacuum cleaner with vortex stabilizer
KR101457434B1 (en) 2008-01-02 2014-11-06 삼성전자주식회사 A cleaner

Also Published As

Publication number Publication date
TR201601673A2 (en) 2017-09-21
WO2017137329A1 (en) 2017-08-17

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