EP3207845B1 - Air duct structure and surface cleaning device having same - Google Patents

Air duct structure and surface cleaning device having same Download PDF

Info

Publication number
EP3207845B1
EP3207845B1 EP15851574.2A EP15851574A EP3207845B1 EP 3207845 B1 EP3207845 B1 EP 3207845B1 EP 15851574 A EP15851574 A EP 15851574A EP 3207845 B1 EP3207845 B1 EP 3207845B1
Authority
EP
European Patent Office
Prior art keywords
inner cover
air
air passage
accommodating chamber
outlet part
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.)
Active
Application number
EP15851574.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3207845A1 (en
EP3207845A4 (en
Inventor
Shenghui LIU
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.)
Midea Group Co Ltd
Jiangsu Midea Cleaning Appliances Co Ltd
Original Assignee
Midea Group Co Ltd
Jiangsu Midea Cleaning Appliances Co Ltd
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
Priority claimed from CN201420589928.3U external-priority patent/CN204192510U/zh
Priority claimed from CN201410538600.3A external-priority patent/CN105559688B/zh
Application filed by Midea Group Co Ltd, Jiangsu Midea Cleaning Appliances Co Ltd filed Critical Midea Group Co Ltd
Publication of EP3207845A1 publication Critical patent/EP3207845A1/en
Publication of EP3207845A4 publication Critical patent/EP3207845A4/en
Application granted granted Critical
Publication of EP3207845B1 publication Critical patent/EP3207845B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • A47L9/02—Nozzles
    • 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
    • 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

Definitions

  • the present disclosure relates to a technical field of household appliances, and more particularly to an air passage structure and a surface cleaning device having same.
  • Ep 1 803 382 A2 discloses a vacuum cleaner and method for reducing noise generated thereby, wherein a fan unit with a motor thereof is positioned in a first housing and a second housing, i.e. a case, and the motor and housings are further located in a suction compartment of the vacuum cleaner's body.
  • the second housing, i.e. the case, of the motor is in communication with the suction compartment at an air discharge port at the bottom part of the housing.
  • the present disclosure seeks to solve at least one of the problems existing in the related art to at least some extent. Therefore, the present disclosure aims to provide an air passage structure for a surface cleaning device, and the air passage structure has advantages of a simple structure and low noise.
  • the present disclosure further needs to provide a surface cleaning device having the air passage structure.
  • a first aspect of the present disclosure provides an air passage structure for a surface cleaning device.
  • the air passage structure includes: an electric motor accommodating chamber provided with an accommodating chamber air inlet part and an accommodating chamber air outlet part; an inner cover provided within the electric motor accommodating chamber and provided with an inner cover air inlet part and an inner cover air outlet part, in which the accommodating chamber air inlet part is in communication with the inner cover air inlet part via an air inlet passage; and an electric motor accommodated in the inner cover.
  • a partition member is provided in the electric motor accommodating chamber; the partition member is provided between the inner cover and the accommodating chamber air outlet part to divide the electric motor accommodating chamber into a first air passage cavity and a second air passage cavity; the inner cover is accommodated in the first air passage cavity; the first air passage cavity is in communication with the second air passage cavity at an outer wall of the air inlet passage.
  • the partition member is connected to the outer side wall of the air inlet passage and an inner wall, adjacent to the accommodating chamber air outlet part, of the electric motor accommodating chamber, and is configured to partition the inner cover from the accommodating chamber air outlet part.
  • the partition member is utilized to divide the electric motor accommodating chamber into the first air passage cavity and the second air passage cavity, such that the flow path of the airflow in the air passage structure is further extended, and the flow velocity of the airflow in the first air passage cavity is reduced.
  • the airflow needs to bypass the outer side wall of the inner cover before entering the second air passage cavity, so as to extend the flow path of the airflow in the air passage structure, reduce the flow velocity, and hence reduce the air outlet noise.
  • the inner cover air outlet part is formed by a plurality of silencing holes.
  • the inner cover air outlet part is formed at a side face of the inner cover adjacent to the accommodating chamber air outlet part.
  • the inner cover in the first air passage cavity, is configured in such a way that a distance between a bottom surface of the inner cover and an inner wall, opposite the bottom surface, of the first air passage cavity reaches the minimum.
  • a distance between the inner cover and an inner wall of the first passage cavity is gradually increased in an air flow direction from the bottom surface of the inner cover towards a side, opposite the inner cover air outlet part, of the inner cover.
  • a distance between the inner cover and the inner wall of the first passage cavity is gradually decreased in the air flow direction from the inner cover air outlet part towards the bottom surface of the inner cover.
  • a sectional area of the second air passage cavity perpendicular to an air flow direction is gradually increased in a direction towards the accommodating chamber air outlet part.
  • the air passage structure further includes a high efficiency particulate air (HEPA) assembly provided at the accommodating chamber air outlet part and located in the second air passage cavity.
  • HEPA high efficiency particulate air
  • the air passage structure further includes an outer cover provided with the accommodating chamber air inlet part, in which the first air passage cavity is defined by a first portion of the outer cover, the partition member and the surface cleaning device; and the second air passage cavity is defined by a second portion, opposite the first portion, of the outer cover and the partition member.
  • a lower edge of the first portion of the outer cover is provided in a first accommodating groove defined in a body of the surface cleaning device; a lower edge of the partition member is provided in a second accommodating groove defined in the body; the first accommodating groove and the second accommodating groove are located at opposite sides of the inner cover.
  • a second aspect of the present disclosure provides a surface cleaning device.
  • the surface cleaning device includes: a dust cup; a cyclone separator accommodated in the dust cup and configured to perform cyclonic dedusting on air entering a bottom of the dust cup; and the air passage structure discussed above, in which an air outlet of the dust cup is in communication with an inner cover air inlet part.
  • the partition member is utilized to divide the electric motor accommodating chamber into the first air passage cavity and the second air passage cavity, such that the flow path of the airflow in the air passage structure is further extended, and the flow velocity of the airflow in the first air passage cavity is reduced.
  • the airflow needs to bypass the outer side wall of the inner cover before entering the second air passage cavity, so as to extend the flow path of the airflow in the air passage structure, reduce the flow velocity, and hence reduce the air-out noise.
  • first and second are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or to imply the number of indicated technical features.
  • the feature defined with “first” and “second” may comprise one or more of this feature.
  • a plurality of' means two or more than two, unless specified otherwise.
  • the terms “mounted,” “connected,” and “coupled” are interpreted broadly and may be, for example, fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections; may also be direct connections or indirect connections via intervening structures; may also be inner communications of two elements, which can be understood by those skilled in the art according to specific situations.
  • the air passage structure for the surface cleaning device 300 includes an electric motor accommodating chamber 110, an inner cover 120 and an electric motor 130.
  • the electric motor accommodating chamber 110 is provided with an accommodating chamber air inlet part 111 and an accommodating chamber air outlet part 112.
  • the electric motor 130 is accommodated in the inner cover 120.
  • the inner cover 120 is provided within the electric motor accommodating chamber 110 and provided with an inner cover air inlet part 121 and an inner cover air outlet part 122.
  • the accommodating chamber air inlet part 111 is in communication with the inner cover air inlet part 121 via an air inlet passage 124.
  • an airflow enters the air inlet passage 124 through the accommodating chamber air inlet part 111 along a direction indicated by arrow "a", then enters the inner cover 120 through the inner cover air inlet part 121 in communication with the air inlet passage 124.
  • the airflow a in the inner cover 120 flows out of the inner cover 120 through the inner cover air outlet part 122 along a direction indicated by arrow "a1" after passing by the electric motor 130.
  • the air inlet passage 124 may be provided at the top of the inner cover 120, while the inner cover air outlet part 122 may be provided at a position near the bottom of the inner cover 120, so as to prolong a length of an air flow path, stabilize turbulence, and hence reduce air-out noise.
  • a partition member 140 is provided in the electric motor accommodating chamber 110.
  • the partition member 140 is provided between the inner cover 120 and the accommodating chamber air outlet part 112 to divide the electric motor accommodating chamber 110 into a first air passage cavity 141 and a second air passage cavity 142.
  • the inner cover 120 is accommodated in the first air passage cavity 141.
  • the first air passage cavity 141 is in communication with the second air passage cavity 142 at an outer wall of the air inlet passage 124.
  • the inner cover air outlet part 122 is in communication with the first air passage cavity 141, the first air passage cavity 141 and the second air passage cavity 142 are communicated with each other at a position adjacent to the outer wall of the air inlet passage 124, and the second air passage cavity 142 is in communication with the accommodating chamber air outlet part 112.
  • the airflow needs to bypass an outer side wall of the inner cover 120 before entering the second air passage cavity 142, so as to extend the air flow path, reduce a flow velocity, further stabilize the turbulence, hence reduce the air-out noise of the air passage structure.
  • the airflow enters the first air passage cavity 141 along a direction indicated by arrow "a2" after flowing out of the inner cover 120 along the direction indicated by arrow "a1"; the airflow flows along the first air passage cavity 141, and enters the second air passage cavity 142 along a direction indicated by arrow "a6"; finally, the airflow flows out through the accommodating chamber air outlet part 112 along a direction indicated by arrow "a7".
  • the partition member 140 is utilized to divide the electric motor accommodating chamber 110 into the first air passage cavity 141 and the second air passage cavity 14, such that the flow path of the airflow in the air passage structure is further extended, and the flow velocity of the airflow in the first air passage cavity 141 is reduced.
  • the airflow needs to bypass the outer side wall of the inner cover 120 before entering the second air passage cavity 142, so as to extend the flow path of the airflow in the air passage structure, reduce the flow velocity, and hence reduce the air-out noise.
  • the partition member 140 is connected to the outer side wall of the air inlet passage 124 and an inner wall, adjacent to the accommodating chamber air outlet part 112, of the electric motor accommodating chamber 110, and partitions the inner cover 120 from the accommodating chamber air outlet part 112.
  • the second air passage cavity 142 is constituted by a side of a partition plate facing upwards, a portion of a top of the electric motor accommodating chamber 110, and a side wall between the partition plate and the top of the electric motor accommodating chamber 110 together.
  • the first air passage cavity 141 is in communication with the accommodating chamber air outlet part 112 through the second air passage cavity 142. That is, the airflow passes through the second air passage cavity 142 after flowing out of the first air passage cavity 141, and finally is exhausted from the accommodating chamber air outlet part 112.
  • the inner cover air outlet part 122 is formed at a side face of the inner cover 120 adjacent to the accommodating chamber air outlet part 112.
  • the airflow enters the first air passage cavity 141 and flows around a lower portion of the inner cover 120 along the direction of arrow "a2”, then flows upwards along an inner side, away from the accommodating chamber air outlet part 112, of the electric motor accommodating chamber 110 (i.e. in a direction indicated by arrow "a4" in Fig. 2 ), enters the second air passage cavity 142 in the direction of arrow "a6", and finally is exhausted from the accommodating chamber air outlet part 112.
  • the electric motor 130 is vertically provided in the first air passage cavity 141, which may extend the flow path of the airflow in the first air passage cavity 141.
  • the inner cover air outlet part 122 is formed by a plurality of silencing holes. It could be understood that the silencing hole may be a hole of a relatively small diameter, such that the air-out noise of the inner cover air outlet part 122 may be lowered using the principle of small hole for sound absorption.
  • the inner cover 120 defines a first section 1411 of the first air passage cavity 141 by an outer side wall of the inner cover air outlet part 122 and a corresponding inner wall of the electric motor accommodating chamber 110 opposite to the outer side wall of the inner cover air outlet part 122. A flow direction of the airflow in the first section 1411 is indicated by arrow "a2" in Fig. 2 . In the example shown in Fig.
  • the first section 1411 of the first air passage cavity 141 has a larger space.
  • the noise generated by the turbulence may be weakened in the process of entering the first passage cavity 141.
  • a distance between the inner cover 120 and an inner wall of the first passage cavity 141 is gradually decreased in the flow direction from the inner cover air outlet part 122 towards a bottom surface 123 of the inner cover 120.
  • the first section 1411 of the first air passage cavity 141 gradually becomes narrow. That is, a sectional area perpendicular to the direction of arrow "a2" is gradually decreased along the flow direction of the airflow in the second section 1412.
  • the air-out noise may be further filtered, thereby improving a muting effect.
  • the inner cover 120 in the first air passage cavity 141, is configured in such a way that a distance between the bottom surface 123 of the inner cover 120 and an inner wall, opposite the bottom surface 123, of the first air passage cavity 141 reaches the minimum, and the airflow in a second section 1412 of the first air passage cavity 141 flows along a direction indicated by arrow "a3".
  • the second section 1412 of the first air passage cavity 141 is defined by the bottom surface 123 of the inner cover 120 and the inner wall, opposite the bottom surface 123, of the first air passage cavity 141; the second section 1412 is in communication with the first section 1411; in the first air passage cavity 141, the second section 1412 has the smallest sectional area among all the sectional areas perpendicular to the flow directions. For instance, in the example shown in Fig.
  • the sectional area of the first section 1411 is larger than that of the second section 1412, and the flow path is narrowed when the airflow enters the second section 1412 from the first section 1411, such that the noise generated by the turbulence may be further reduced.
  • the distance between the inner cover 120 and the inner wall of the first passage cavity 141 is gradually increased in an airflow direction from the bottom surface 123 of the inner cover 120 towards a side, opposite the inner cover air outlet part 122, of the inner cover 120. That is, a third section 1413 of the first air passage cavity 141 is defined by the side, opposite the inner cover air outlet part 122, of the inner cover 120 and the inner wall of the first passage cavity 141; the third section 1413 is in communication with the second section 1412; the airflow in the third section 1413 flows along the direction of arrow "a4" in Fig. 2 ; a sectional area perpendicular to the direction of arrow "a4" is gradually increased along the direction of arrow "a4".
  • the airflow after passing through the relatively narrow second section 1412, the airflow enters the third section 1413 gradually widened, which slows down the airflow velocity effectively, further stabilizes the airflow and reduces the noise generated by the turbulence.
  • a fourth section 1414 is defined by a side of the inner cover 120 opposite the accommodating chamber air outlet part 112 at a position adjacent to a top wall of the inner cover 120 and the inner wall of the first passage cavity 141.
  • the fourth section 1414 is in communication with the third section 1413.
  • the airflow flows along a direction indicated by arrow "a5" in the fourth section 1414.
  • the fourth section 1414 becomes narrow along the direction of arrow "a5". That is, a sectional area perpendicular to the direction of arrow "a5" is gradually decreased along the direction of arrow "a5".
  • a sectional area of the second air passage cavity 142 perpendicular to the airflow direction is gradually increased in a direction towards the accommodating chamber air outlet part 112. Therefore, in the flowing process, the gradual expansion of the flowing space of the airflow can effectively reduce the flow velocity of the airflow, and hence reduce the air-out noise of the air passage structure.
  • the air passage structure includes a HEPA assembly 150.
  • the HEPA assembly 150 is provided at the accommodating chamber air outlet part 112 and located in the second air passage cavity 142. It could be understood that the HEPA assembly 150 has a function of dust filtration and noise absorption. By providing the HEPA assembly 150 at the accommodating chamber air outlet part 112, it is possible to further eliminate the noise of the air passage structure and improve the muting effect and dedusting effect of products.
  • the air passage structure further includes an outer cover 160.
  • the outer cover 160 is provided with the accommodating chamber air inlet part 111.
  • the first air passage cavity 141 is defined by a first portion of the outer cover 160, the partition member 140 and the surface cleaning device 300; the second air passage cavity 142 is defined by a second portion, opposite the first portion, of the outer cover 160 and the partition member 140.
  • the air passage structure may be further simplified and become more compact and reasonable.
  • a tubular body 125 is provided at the top of the inner cover 120 and faces upwards.
  • a lower end of the tubular body 125 is in communication with the inner cover 120 and forms the inner cover air inlet part 121.
  • the air inlet passage 124 is defined within the tubular body 125.
  • a connecting component 170 is fitted over an outer circumferential wall of the tubular body 125.
  • a lower end of the connecting component 170 is connected with an outer side wall of the top of the inner cover 120, and an upper end of the connecting component 170 is in communication with the air inlet passage 124 and forms the accommodating chamber air inlet part 111.
  • a side wall of the connecting component 170 adjacent to its upper end is provided with a snap groove 171 extending along a circumferential direction of the connecting component. The outer cover 160 is snapped into the snap groove 171.
  • the second air passage cavity 142 is defined by a side, facing the outer cover 160, of the partition plate and a portion, opposite the partition plate, of the outer cover 160.
  • the sectional area, perpendicular to the airflow direction, of the second air passage cavity 142 defined by the partition plate and the above portion of the outer cover 160 is gradually enlarged in the direction towards the accommodating chamber air outlet part 112.
  • a lower edge of the first portion of the outer cover 160 is provided in a first accommodating groove 311 defined in a body 310 of the surface cleaning device 300; a lower edge of the partition member 140 is provided in a second accommodating groove 312 defined in the body 310; the first accommodating groove 311 and the second accommodating groove 312 are located at opposite sides of the inner cover 120.
  • the surface cleaning device 300 may be configured as a horizontal vacuum cleaner or an upright vacuum cleaner.
  • the air enters the air inlet passage 124 from the accommodating chamber air inlet part 111 along the direction of arrow "a", and enters the inner cover 120 from the inner cover air inlet part 121.
  • the airflow in the inner cover 120 flows out from the inner cover air outlet part 122 along the direction of arrow "a1", and then enters the first section 1411 of the first air passage cavity 141. Since the inner cover air outlet part 122 is formed by the plurality of silencing holes of relatively small diameter, and the first section 1411 of the first air passage cavity 141 has a relatively large space, when the airflow enters the first section 1411 of the first air passage cavity 141 from the inner cover air outlet part 122, the noise generated by the turbulence may be weakened in the process of entering the first passage cavity 141, due to the sudden enlargement of the flowing space for the airflow.
  • the airflow in the first section 1411 enters the second section 1412 along the direction of arrow "a3". Compared with the flowing space in the first section 1411, the flowing space in the second section 1412 is narrowed. When the airflow enters the second section 1412 from the first section 1411, the airflow undergoes a process in which the flowing space is narrowed, and hence the air-out noise of the air passage structure may be further reduced.
  • the airflow in the second section 1412 enters the third section 1413 along the direction of arrow "a4". Compared with the flowing space in the second section 1412, the flowing space in the third section 1413 is widened. When the airflow enters the third section 1413 from the second section 1412, the airflow undergoes a process in which the flowing space is widened, and the flowing space of airflow is enlarged hence the noise generated by the turbulence may be further weakened in the process of entering the third section 1413.
  • the airflow in the third section 1413 enters the fourth section 1414 along the direction of arrow "a5". Compared with the flowing space in the third section 1413, the flowing space in the fourth section 1414 is narrowed. When the airflow enters the fourth section 1414 from the third section 1413, the airflow undergoes the process in which the flowing space is narrowed again, and hence the air-out noise of the air passage structure may be further reduced.
  • the airflow in the fourth section 1414 enters the second air passage cavity 142 along the direction of arrow "a6", and flows along the direction of arrow "a7".
  • the sectional area of the second air passage cavity 142 perpendicular to the air flow direction is gradually increased in the direction towards the accommodating chamber air outlet part 112.
  • the flow velocity of the airflow may be lowered effectively, and hence the air-out noise of the air passage structure may be reduced.
  • the inner cover, the partition plate and the outer cover define air flow passages of different widths in the air passage structure. Due to the width change of the air passage structure, in the flowing process, the noise generated by the turbulence is gradually filtered and weakened, thereby achieving the muting effect of the air passage structure and improving the muting effect of the whole machine.
  • the surface cleaning device 300 includes a dust cup 320, a cyclone separator 330 and the above air passage structure.
  • the cyclone separator 330 is housed in the dust cup 320 and performs cyclonic dedusting on the air entering from the bottom of the dust cup 320.
  • An air outlet 322 of the dust cup 320 is in communication with the inner cover air inlet part 121.
  • the dust cup 320 is provided with an air inlet 321 therein; the air enters the dust cup 320 through the air inlet and is dedusted by the cyclone separator 330; the dedusted air flows out through the air outlet 322 of the dust cup 320, and enters the air passage structure from the inner cover air inlet part 121.
  • the partition member 140 is utilized to divide the electric motor accommodating chamber 110 into the first air passage cavity 141 and the second air passage cavity 14, such that the flow path of the airflow in the air passage structure is further extended, and the flow velocity of the airflow in the first air passage cavity 141 is reduced.
  • the airflow needs to bypass the outer side wall of the inner cover 120 before entering the second air passage cavity 142, so as to extend the flow path of the airflow in the air passage structure, reduce the flow velocity, and hence reduce the air-out noise.
  • an airflow stabilizing room 340 is defined between the air outlet 322 of the dust cup 320 and the inner cover air inlet part 121.
  • the air flowing out of the dust cup 320 may be stabilized, so as to lower the flow velocity of the airflow entering the air passage structure and hence further reduce the air-out noise of the air passage structure.
  • a sectional area of the airflow stabilizing room 340 perpendicular to the air flow direction is gradually increased from the air outlet 322 of the dust cup 320 towards the inner cover air inlet part 121. Therefore, it may be advantageous to reduce the noise in the air passage structure.
  • the air enters the dust cup 320 through the air inlet and is dedusted by the cyclone separator 330; the dedusted air flows out through the air outlet 322 of the dust cup 320, and enters the airflow stabilizing room 340 from the inner cover air inlet part 121.
  • the air enters the air inlet passage 124 from the accommodating chamber air inlet part 111 along the direction of arrow "a", and enters the inner cover 120 from the inner cover air inlet part 121.
  • the airflow in the inner cover 120 flows out from the inner cover air outlet part 122 along the direction of arrow "a1", and then enters the first section 1411 of the first air passage cavity 141. Since the inner cover air outlet part 122 is formed by the plurality of silencing holes of relatively small diameter, and the first section 1411 of the first air passage cavity 141 has a relatively large space, when the airflow enters the first section 1411 of the first air passage cavity 141 from the inner cover air outlet part 122, the noise generated by the turbulence may be weakened in the process of entering the first passage cavity 141, due to the sudden enlargement of the flowing space for the airflow.
  • the airflow in the first section 1411 enters the second section 1412 along the direction of arrow "a3". Compared with the flowing space in the first section 1411, the flowing space in the second section 1412 is narrowed. When the airflow enters the second section 1412 from the first section 1411, the airflow undergoes a process in which the flowing space is narrowed, and hence the air-out noise of the air passage structure may be further reduced.
  • the airflow in the second section 1412 enters the third section 1413 along the direction of arrow "a4". Compared with the flowing space in the second section 1412, the flowing space in the third section 1413 is widened. When the airflow enters the third section 1413 from the second section 1412, the airflow undergoes a process in which the flowing space is widened, and hence the noise generated by the turbulence may be further weakened in the process of entering the third section 1413.
  • the airflow in the third section 1413 enters the fourth section 1414 along the direction of arrow "a5". Compared with the flowing space in the third section 1413, the flowing space in the fourth section 1414 is narrowed. When the airflow enters the fourth section 1414 from the third section 1413, the airflow undergoes the process in which the flowing space is narrowed again, and hence the air-out noise of the air passage structure may be further reduced.
  • the airflow in the fourth section 1414 enters the second air passage cavity 142 along the direction of arrow "a6", and flows along the direction of arrow "a7".
  • the sectional area of the second air passage cavity 142 perpendicular to the air flow direction is gradually increased in the direction towards the accommodating chamber air outlet part 112.
  • the flow velocity of the airflow may be lowered effectively, and hence the air-out noise of the air passage structure may be reduced.
  • the inner cover, the partition plate and the outer cover define air flow passages of different widths in the air passage structure. Due to the width change of the air passage structure, in the flowing process, the noise generated by the turbulence is gradually filtered and weakened, thereby achieving the muting effect of the air passage structure and improving the muting effect of the whole machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Electric Suction Cleaners (AREA)
EP15851574.2A 2014-10-13 2015-07-28 Air duct structure and surface cleaning device having same Active EP3207845B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201420589928.3U CN204192510U (zh) 2014-10-13 2014-10-13 风道结构及具有其的表面清洁装置
CN201410538600.3A CN105559688B (zh) 2014-10-13 2014-10-13 风道结构及具有其的表面清洁装置
PCT/CN2015/085299 WO2016058434A1 (zh) 2014-10-13 2015-07-28 风道结构及具有其的表面清洁装置

Publications (3)

Publication Number Publication Date
EP3207845A1 EP3207845A1 (en) 2017-08-23
EP3207845A4 EP3207845A4 (en) 2018-06-27
EP3207845B1 true EP3207845B1 (en) 2019-09-04

Family

ID=55746100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15851574.2A Active EP3207845B1 (en) 2014-10-13 2015-07-28 Air duct structure and surface cleaning device having same

Country Status (2)

Country Link
EP (1) EP3207845B1 (zh)
WO (1) WO2016058434A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116211159B (zh) * 2023-05-08 2023-08-18 科沃斯家用机器人有限公司 擦窗机器人

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101353311B1 (ko) * 2005-12-27 2014-01-24 삼성전자주식회사 진공청소기
KR100844130B1 (ko) * 2006-12-06 2008-07-04 삼성광주전자 주식회사 팬 모터용 케이스 조립체
KR100809738B1 (ko) * 2007-03-12 2008-03-06 삼성광주전자 주식회사 진공청소기
CN201230860Y (zh) * 2008-04-01 2009-05-06 汪伟 一种设有消音结构的吸尘器
JP5216688B2 (ja) * 2009-05-29 2013-06-19 株式会社東芝 電気掃除機
CN102142732A (zh) * 2010-02-01 2011-08-03 乐金电子(天津)电器有限公司 吸尘器的分层流道电机壳
JP2014158584A (ja) * 2013-02-20 2014-09-04 Iris Ohyama Inc 電気掃除機
CN203841612U (zh) * 2014-04-14 2014-09-24 江苏美的春花电器股份有限公司 吸尘器
CN204192510U (zh) * 2014-10-13 2015-03-11 江苏美的春花电器股份有限公司 风道结构及具有其的表面清洁装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3207845A1 (en) 2017-08-23
EP3207845A4 (en) 2018-06-27
WO2016058434A1 (zh) 2016-04-21

Similar Documents

Publication Publication Date Title
CN106091062B (zh) 吸油烟机
US20100175411A1 (en) Air conditioner
TW201512611A (zh) 氣流交換裝置
US10598190B2 (en) Centrifugal blower
KR102023563B1 (ko) 공기청정기용 송풍 유닛 및 이를 포함하는 공기청정기
EP3207845B1 (en) Air duct structure and surface cleaning device having same
JP2014083221A (ja) サイクロン分離装置及び電気掃除機
JPH1199097A (ja) 電気掃除機
CN205094319U (zh) 电机组件及具有它的吸尘器
KR20190136625A (ko) 청소기
CN109589042B (zh) 用于吸尘器的电机罩、吸尘器的电机模组及吸尘器
CN110494654B (zh) 远心风扇、成型用模具及流体输送装置
CN106369787B (zh) 用于空调室外机的导风组件及空调室外机
JP2011058413A (ja) 遠心ファン、成型用金型および流体送り装置
JP2009233013A (ja) 電気掃除機
JP3855991B2 (ja) ファンフィルターユニット
JP2007093136A (ja) レンジフード
CN112205919A (zh) 一种降噪吸尘器及吸尘器电机
KR20210115564A (ko) 팬모듈 및 이를 구비하는 휴대형 공기정화기
CN111096708B (zh) 吸尘器的出风罩组件及具有其的吸尘器
CN107095617B (zh) 吸尘器的电机前导风结构和吸尘器
CN102777428B (zh) 无叶风扇
KR20210099381A (ko) 휴대형 공기정화기
KR20210094910A (ko) 휴대형 공기정화기 및 이에 구비되는 팬모듈
KR100690695B1 (ko) 유동가이드를 구비한 배기 후드

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20170515

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20180525

RIC1 Information provided on ipc code assigned before grant

Ipc: A47L 9/00 20060101AFI20180518BHEP

Ipc: A47L 9/02 20060101ALI20180518BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180802

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190322

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1174178

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190915

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602015037468

Country of ref document: DE

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190904

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191204

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191204

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191205

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1174178

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200106

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200224

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602015037468

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG2D Information on lapse in contracting state deleted

Ref country code: IS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200105

26N No opposition filed

Effective date: 20200605

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200728

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200728

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20220623

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20220706

Year of fee payment: 8

Ref country code: DE

Payment date: 20220531

Year of fee payment: 8

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230526

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602015037468

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20230728

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240201

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230728