WO2015163564A1 - Ventilateur d'aération - Google Patents

Ventilateur d'aération Download PDF

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Publication number
WO2015163564A1
WO2015163564A1 PCT/KR2015/000669 KR2015000669W WO2015163564A1 WO 2015163564 A1 WO2015163564 A1 WO 2015163564A1 KR 2015000669 W KR2015000669 W KR 2015000669W WO 2015163564 A1 WO2015163564 A1 WO 2015163564A1
Authority
WO
WIPO (PCT)
Prior art keywords
bracket
felt cover
joining
joined
insertion space
Prior art date
Application number
PCT/KR2015/000669
Other languages
English (en)
Inventor
Jeong Cheol Jang
Je Hyung Seo
Seong Jin Lee
Original Assignee
New Motech 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
Application filed by New Motech Co., Ltd. filed Critical New Motech Co., Ltd.
Publication of WO2015163564A1 publication Critical patent/WO2015163564A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/124—Sealing of shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/057—Bearings hydrostatic; hydrodynamic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window

Definitions

  • the present invention relates to a ventilation fan, and more particularly to a ventilation fan with a fan motor that is made by a simple assembling process to reduce the processing time and has a structure designed to effectively prevent oil leaks from the motor.
  • the ventilation fan refers to a device for circulating the indoor air or exchanging indoor and outdoor airs.
  • a ventilation fan is necessarily provided with a fan motor.
  • the motor for driving a fan used to circulate a fluid such as air is called as "fan motor”.
  • the fan motor is, in many cases, installed in the areas that are mostly under circumferences susceptible to dew condensation due to temperature change or impregnated with dampness. This possibly allows infiltration of moisture to penetrate into the motor and cause malfunctions. Hence, a variety of structures have been developed for the purpose of preventing this problem.
  • Korean Patent Nos. 10-0311324 and 10-1074935 and U.S. Patent No. 6,577,031 respectively disclose technologies for fabricating a motor housing by resin molding through an insert injection molding of a stator, a printed circuit board, or other components of a motor.
  • the cited inventions have an effective structure to prevent infiltration of moisture into the motor, because the motor housing is formed by resin molding in such a manner to bury the stator and the printed circuit board.
  • the inventors of the present invention suggest a novel fan motor with an improved housing structure of the fan motor to ensure simple assembly and prevent oil leaks as best as possible and a ventilation fan designed to easily mount such a fan motor on.
  • a ventilation fan that includes: a housing; a fan motor joined to a motor joining hole formed in the housing; and an impeller joined to a rotary shaft of the fan motor.
  • the fan motor includes: a first bracket having the rotary shaft going through the central portion thereof and an upper bearing insertion space formed in the inner portion thereof, where an upper bearing supporting the top end portion of the rotary shaft is inserted into the upper bearing insertion space; an upper felt cover being joined to the inner portion of the first bracket to seal the upper bearing insertion space tightly; a second bracket having the first bracket being joined to the upper surface thereof and a lower bearing insertion space formed in the lower central portion thereof, where a lower bearing supporting the bottom end portion of the rotary shaft is inserted into the lower bearing insertion space; and a lower felt cover being joined to the lower surface of the second bracket to seal the lower bearing insertion space tightly.
  • the first bracket may have a flange portion downwardly extending from the top end portion of the inner surface thereof, the flange portion having a plurality of first joining protrusions inwardly protruding.
  • the upper felt cover may have a first joining groove on the outer surface thereof such that the first joining protrusions formed on the flange portion can be inserted into the first joining groove.
  • the second bracket may have a plurality of second joining protrusions inwardly protruding from the lower inner surface thereof.
  • the lower felt cover may have a second joining groove on the outer surface thereof such that the second joining protrusions can be inserted into the second joining groove.
  • an upper oil ring for preventing oil leak between the upper felt cover and the first bracket may be mounted on the upper surface of the upper felt cover.
  • a lower oil ring for preventing oil leak between the lower felt cover and the second bracket may be mounted on the upper surface of the lower felt cover.
  • a reducing space may be formed around the motor joining hole of the housing, with a reinforcing rib being formed in the reducing space.
  • the present invention has an effect to provide a ventilation fan using a fan motor that is designed to facilitate incorporation of a fan motor and simplify the assembly of the upper and lower felt covers of the fan motor to reduce the processing time required in the manufacture of the fan motor.
  • FIG. 1 is an exploded perspective view of a ventilation fan according to the present invention.
  • FIG. 2 is an exploded perspective view of a fan motor adopted in the ventilation fan according to the present invention.
  • FIG. 3 is a cross-sectional view of the fan motor adopted in the ventilation fan according to the present invention.
  • FIG. 4 is a detailed perspective view showing the internal structure of a first bracket adopted in the ventilation fan according to the present invention.
  • FIG. 5 is a detailed perspective view showing the structure of an upper felt cover according to the present invention.
  • FIG. 6 is a detailed perspective view showing the lower surface structure of a second bracket according to the present invention.
  • FIG. 7 is a detailed perspective view showing the structure of a lower felt cover according to the present invention.
  • FIG. 8 is a detailed perspective view showing a housing of the ventilation fan according to the present invention.
  • FIG. 1 is an exploded perspective view of a ventilation fan according to the present invention.
  • the ventilation fan consists of a fan motor 100, an impeller 200, a housing 300, and a grill 400.
  • the fan motor 100 is a brushless DC electric motor (BLDC motor).
  • the impeller 200 joined to the rotary shaft of the fan motor 100, rotates in conjunction with the rotation of the rotary shaft of the fan motor.
  • the rotation of the impeller 200 forces the indoor air into the housing 300 through the grill 400 and expel it to the outside of the building through a duct connecting portion 330 connected to a duct installed in the building.
  • the duct connecting portion 330 is provided with a backdraft damping plate 331 for restraining the reverse flow of air, that is, backdraft.
  • the fan motor 100 is joined to the lower side of the central portion of the housing 300, and an end cover 320 is joined to the outer side of the lower portion of the housing 300.
  • the impeller 200 is positioned at the center inside the housing 300 while joining to the rotary shaft of the fan motor 100.
  • the upper portion of the impeller 200 is covered with a housing cover 310.
  • the housing cover 310 is designed to provide a flow channel that is a passage for the flow of air.
  • the outside air is allowed to flow into the housing 300 through an opening formed at the center of the housing cover 310 and the upper portion of the flow channel towards an outlet is covered. This can help the flow of air easier.
  • the fan motor 100 is a BLDC motor and thus electrically controllable.
  • the fan motor 100 is required to be electrically connected to a printed circuit board 190 on which a control device or the like is mounted.
  • the printed circuit board for a fan motor is generally positioned inside the housing of the fan motor
  • the ventilation fan of the present invention has the printed circuit board 190 positioned outside the fan motor.
  • the printed circuit board 190 is joined to the inner bottom side of the end cover 320, making it easier to incorporate a cable (not shown) for power connection.
  • the printed circuit board 190 has a coupling hole 191 into which a screw or the like is inserted while the printed circuit board 190 joins to the bottom side of the end cover 320.
  • FIG. 2 is an exploded perspective of the fan motor adopted in the ventilation fan according to the present invention
  • FIG. 3 is a cross-sectional view of the fan motor 100.
  • the fan motor of the present invention largely consists of a first bracket 110, a second bracket 120, a rotary shaft 130, an upper felt cover 140, and a lower felt cover 150.
  • the first and second brackets 110 and 120 of the present invention are formed by plastic injection molding and joined together via bolts (not shown) or the like.
  • screw holes 111 and 121 into which bolts are inserted are formed on the circumferential surfaces of the first and second brackets 110 and 120, respectively.
  • the bolts pass through the screw holes 111 and 121 and then through holes 304 of the housing 300 and become fixed to coupling holes 321 of the end cover 320, ending up with the fan motor 100, the housing 300 and the end cover 320 combined together to facilitate the assembly.
  • first and second brackets 110 and 120 are provided with a welding groove (not shown) and a welding protrusion (not shown), respectively, and then combined together by applying ultrasound wave to the welding protrusion to make the welding protrusion melt down and join to the welding groove.
  • a rotor 101 Inside the first and second brackets 110 and 120 joined together are positioned a rotor 101, a stator 102, and a rotary shaft 120.
  • the rotor 101 and the stator 102 which are general devices constituting a fan motor, will not be described in further detail in this description.
  • a coil (not shown) wound on the stator 102 is connected to a connector 103 and electrically connected to the printed circuit board 190.
  • the connector 103 is preferably positioned to outwardly project from the first and second brackets 110 and 120.
  • the rotary shaft 130 is positioned to go through the central portion of the first and second brackets 110 and 120. As shown in FIG. 3, the top end portion of the rotary shaft 130 is rotationally supported by an upper bearing 131 positioned inside the central portion of the first bracket 110, with the bottom end portion rotationally supported by a lower bearing 132.
  • the upper bearing 131 is forcedly pressed and fixed at an upper bearing seating portion 113 formed inside the central portion of the first bracket 110 while it is inserted in an upper bearing insertion space 112.
  • the lower portion of the upper bearing 131 is supported by an upper board push 114.
  • an upper felt 115 On the circumferential surface of the upper bearing 131 is positioned an upper felt 115, which supplies the upper bearing insertion space 112 with an oil that facilitates the rotation of the upper bearing 131.
  • the upper felt cover 140 is joined to the inner portion of the first bracket 110 to tightly seal the upper bearing insertion space 112.
  • FIG. 4 is a detailed perspective view showing the internal structure of the first bracket 110 according to the present invention
  • FIG. 5 is a detailed perspective view showing the structure of the upper felt cover 140 according to the present invention.
  • a first joining groove 141 is formed along the outer circumferential surface of the upper felt cover 140, such that the first joining protrusions 161 can be inserted into the first joining groove 141.
  • the first joining protrusions 161 formed on the inner surface of the flange portion 160 are smoothly inserted into the first joining groove 141 formed on the outer surface of the upper felt cover 140.
  • the first joining protrusions 161 and the first joining groove 141 may be changed in position.
  • Such a joining structure of the upper felt cover 140 and the first bracket 110 makes it possible to join the upper felt cover 140 to the first bracket 110 very easily. This can simplify the assembly process of the fan motor and thus reduce the processing time.
  • an upper oil return washer insertion portion 116 is formed inside the central portion of the upper felt cover 140, such that an upper oil return washer 117 is inserted into the upper oil return washer insertion portion 116 so as to prevent oil leaks between the rotary shaft 130 and the upper felt cover 140.
  • an upper oil ring 170 is preferably mounted on the upper surface of the upper felt cover 140 for the sake of preventing oil leaks between the upper felt cover 140 and the first bracket 110.
  • a first seating groove 142 is formed in a circle on the upper surface of the upper felt cover 140, such that the upper oil ring 170 is fixedly inserted into the first seating groove 142.
  • the upper oil ring 170 When the upper felt cover 140 is joined to the inner portion of the first bracket 110 while the upper oil ring 170 is mounted on the upper surface of the upper felt cover 140, the upper oil ring 170 is forcedly positioned between the inner surface of the top end portion of the first bracket 110 and the upper felt cover 140. This can prevent the oil from leaking between the upper felt cover 140 and the inner surface of the top end portion of the first bracket 110. It is also, of course, possible to join the upper oil ring 170 to the inner portion of the first bracket 110 and then attach the upper felt cover 140.
  • the lower bearing 132 is positioned in a lower bearing insertion space 123 formed at the center on the lower surface of the second bracket 120.
  • the upper portion of the lower bearing 132 is forcedly pressed and fixed at a lower bearing seating portion 124 formed on the central upper portion of the lower bearing insertion space 123.
  • the lower portion of the lower bearing 132 is supported by a lower board push 125.
  • a lower felt 126 On the circumferential surface of the lower bearing 132 is mounted a lower felt 126, which supplies the lower bearing 132 with an oil to facilitate the rotation of the lower bearing 132.
  • a lower oil return washer insertion portion 127 On the upper portion of the lower bearing seating portion 124 is formed a lower oil return washer insertion portion 127.
  • a lower oil return washer 128 is inserted into the lower oil return washer insertion portion 127 so as to prevent oil leaks towards to the upper portion of the lower bearing 132.
  • the lower felt cover 150 is joined to the lower surface of the second bracket 120 to tightly seal the lower bearing insertion space 123.
  • FIG. 6 is a detailed perspective view showing the lower surface structure of the second bracket 120 according to the present invention
  • FIG. 7 is a detailed perspective view showing the structure of the lower felt cover 150 according to the present invention.
  • a plurality of second joining protrusions 122 that are similar in form to the first joining protrusions 161 formed on the flange portion 160 are formed to inwardly protrude on the lower inner surface of the second bracket 120.
  • a second joining groove 151 into which the second joining protrusions are to be inserted is formed in circle along the outer circumferential surface of the lower felt cover 150.
  • the second joining protrusions 122 formed on the lower inner surface of the second bracket 120 are smoothly inserted into the second joining groove 151 formed on the outer surface of the lower felt cover 150. This makes the lower felt cover 150 join to the lower surface of the second bracket 120 to tightly seal the lower bearing insertion space 123.
  • the second joining protrusions 122 and the second joining groove 151 may be changed in position.
  • an lower oil ring 180 is preferably mounted on the upper surface of the lower felt cover 150 for the sake of preventing oil leaks between the lower felt cover 150 and the second bracket 120.
  • a second seating groove 152 is formed in a circle on the upper surface of the lower felt cover 150, such that the lower oil ring 180 is fixedly inserted into the second seating groove 152. It is also, of course, possible to join the lower oil ring 180 to the second bracket 120 first and then attach the lower felt cover 150.
  • the lower oil ring 180 is forcedly positioned between the lower surface of the second bracket 120 and the lower felt cover 150 to maintain the tight sealing. This can prevent the oil from leaking between the lower felt cover 150 and the second bracket 120.
  • FIG. 8 is a detailed perspective view showing the housing 300 of the ventilation fan according to the present invention.
  • the fan motor 100 is joined to a motor joining hole 301 of the housing 300 in the ventilation fan according to the present invention.
  • the outer circumferential portion of the second bracket 120 of the fan motor 100 is seated around the motor joining hole 301, so that the screw holes 111 and 121 are joined to the through holes 304 in alignment with each other.
  • a reducing space 303 for reducing the amount of plastic resin
  • a reinforcing rib 302 is formed in the reducing space 303 to reinforce the strength.
  • the air introduced into the housing 300 by the fan motor 100 is released to the duct via an air outlet 305.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

La présente invention porte sur un ventilateur d'aération qui inclut : un logement ; un moteur de ventilateur joint à un trou de jonction de moteur formé dans le logement ; et une turbine jointe à un arbre rotatif du moteur de ventilateur. Le moteur de ventilateur inclut : un premier étrier dont la partie centrale est traversée par l'arbre rotatif et dans la partie intérieure duquel est formé un espace d'insertion de palier supérieur, un palier supérieur supportant la partie d'extrémité supérieure de l'arbre rotatif étant inséré dans l'espace d'insertion de palier supérieur ; un couvercle en feutre supérieur qui est joint à la partie intérieure du premier étrier pour sceller hermétiquement l'espace d'insertion de palier supérieur ; un second étrier dont la surface supérieure est jointe au premier étrier et dans la partie centrale inférieure duquel est formé un espace d'insertion de palier inférieur, un palier inférieur supportant la partie d'extrémité inférieure de l'arbre rotatif étant inséré dans l'espace d'insertion de palier inférieur ; et un couvercle en feutre inférieur qui est joint à la surface inférieure du second étrier pour sceller hermétiquement l'espace d'insertion de palier inférieur.
PCT/KR2015/000669 2014-04-21 2015-01-22 Ventilateur d'aération WO2015163564A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0047261 2014-04-21
KR1020140047261A KR101563205B1 (ko) 2014-04-21 2014-04-21 환풍기

Publications (1)

Publication Number Publication Date
WO2015163564A1 true WO2015163564A1 (fr) 2015-10-29

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ID=54332700

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2015/000669 WO2015163564A1 (fr) 2014-04-21 2015-01-22 Ventilateur d'aération

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KR (1) KR101563205B1 (fr)
WO (1) WO2015163564A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101908555B1 (ko) * 2016-08-17 2018-10-16 효성전기주식회사 방열이 용이한 dc모터 조립방법
KR101908550B1 (ko) * 2016-08-17 2018-10-16 효성전기주식회사 블로워모터 조립방법
KR102552595B1 (ko) * 2021-07-27 2023-07-07 주식회사 힘펠 임펠러 및 이를 포함하는 환풍기

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3015237U (ja) * 1995-02-28 1995-08-29 富士工業株式会社 多翼ファン用のファンケーシング
KR200269665Y1 (ko) * 2001-12-26 2002-03-22 엘지전자주식회사 오일리스 베어링 타입 전동기의 누유 방지 장치
KR20110075712A (ko) * 2009-12-28 2011-07-06 삼성전기주식회사 베어링 어셈블리 및 이를 이용한 스핀들 모터
KR20140037334A (ko) * 2012-09-17 2014-03-27 뉴모텍(주) 팬 모터

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3015237B2 (ja) * 1993-12-03 2000-03-06 株式会社日立製作所 放射性廃棄物の固化処理設備

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3015237U (ja) * 1995-02-28 1995-08-29 富士工業株式会社 多翼ファン用のファンケーシング
KR200269665Y1 (ko) * 2001-12-26 2002-03-22 엘지전자주식회사 오일리스 베어링 타입 전동기의 누유 방지 장치
KR20110075712A (ko) * 2009-12-28 2011-07-06 삼성전기주식회사 베어링 어셈블리 및 이를 이용한 스핀들 모터
KR20140037334A (ko) * 2012-09-17 2014-03-27 뉴모텍(주) 팬 모터

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