KR20080045568A - Turbofan and air conditioner having the same - Google Patents

Turbofan and air conditioner having the same Download PDF

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Publication number
KR20080045568A
KR20080045568A KR1020060114806A KR20060114806A KR20080045568A KR 20080045568 A KR20080045568 A KR 20080045568A KR 1020060114806 A KR1020060114806 A KR 1020060114806A KR 20060114806 A KR20060114806 A KR 20060114806A KR 20080045568 A KR20080045568 A KR 20080045568A
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KR
South Korea
Prior art keywords
rotating plate
blade
coupled
outer end
turbo fan
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Application number
KR1020060114806A
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Korean (ko)
Inventor
최원석
사토 세이지
조민기
Original Assignee
삼성전자주식회사
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Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1020060114806A priority Critical patent/KR20080045568A/en
Priority to US11/782,861 priority patent/US20080118345A1/en
Priority to CNA200710141897XA priority patent/CN101187383A/en
Priority to JP2007212937A priority patent/JP2008128233A/en
Publication of KR20080045568A publication Critical patent/KR20080045568A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • 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
    • F04D29/30—Vanes
    • 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
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0683—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans the fans not of the axial type

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Abstract

A turbo fan and an air conditioner having the same are provided to reduce air blowing noise by allowing an outer end portion of a blade to be inclined to a rotation plate and thereby minimizing collision between swirl and the outer end portion. A turbo fan(40) comprises a rotation plate(41) fitted to a shaft of a driving motor, a plurality of blades(42) connected to an outer circumferential portion of the rotation plate, a shroud(43) connected to outer end portions of the blades. The end portions of the blades include inner end portions connected to the rotation plate and outer end portions disconnected to the rotation plate. The outer end portions are formed to be inclined to the rotation plate.

Description

터보팬 및 이를 갖춘 공기조화기{TURBOFAN AND AIR CONDITIONER HAVING THE SAME}TURBOFAN AND AIR CONDITIONER HAVING THE SAME}

도 1은 종래 터보팬의 블레이드 구조를 나타낸 단면도이다.1 is a cross-sectional view showing a blade structure of a conventional turbofan.

도 2는 본 발명에 따른 터보팬이 적용된 천장형 공기조화기를 나타낸 단면도이다.2 is a cross-sectional view showing a ceiling air conditioner to which a turbofan according to the present invention is applied.

도 3은 본 발명에 따른 터보팬의 사시도이다.3 is a perspective view of a turbofan according to the present invention.

도 4는 본 발명에 따른 터보팬의 단면도이다.4 is a cross-sectional view of a turbofan according to the present invention.

도 5는 본 발명에 따른 터보팬의 요부 상세도이다.5 is a detailed view of main parts of the turbofan according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10: 본체케이스, 11: 구동모터,10: main body case, 11: drive motor,

12: 열교환기, 20: 천장패널,12: heat exchanger, 20: ceiling panel,

21: 흡입구, 22: 토출구,21: suction port, 22: discharge port,

23: 필터, 24: 공기안내판,23: filter, 24: air guide plate,

40: 터보팬, 41: 회전판,40: turbofan, 41: tumbler,

42: 블레이드, 43: 쉬라우드,42: blade, 43: shroud,

45: 블레이드의 내측단부, 46: 블레이드의 외측단부.45: inner end of the blade, 46: outer end of the blade.

본 발명은 터보팬 및 이를 갖춘 공기조화기에 관한 것으로, 더욱 상세하게는 송풍소음을 줄일 수 있는 터보팬 및 이를 갖춘 공기조화기에 관한 것이다.The present invention relates to a turbo fan and an air conditioner having the same, and more particularly, to a turbo fan and an air conditioner having the same that can reduce the blowing noise.

일반적으로 터보팬은 축방향으로 유입되는 공기를 반경방향으로 송풍하는 원심팬의 일종으로 냉장고, 공기조화기, 청소기 등에서 공기를 송풍하는 용도로 쓰인다.In general, a turbo fan is a kind of centrifugal fan that radially blows air flowing in the axial direction, and is used for blowing air in a refrigerator, an air conditioner, and a cleaner.

대한민국 공개특허공보 2002-19160호에는 공기조화기에 적용된 터보팬이 개시되어 있다. 이 터보팬은 중앙에 허브부가 마련된 회전판, 회전판에 결합된 다수의 블레이드, 그리고 블레이드들을 연결하는 원형의 쉬라우드를 갖추고 있다. 또 이 터보팬은 회전판의 외경이 쉬라우드의 내경보다 작게 형성되어 있다. 이는 회전판, 블레이드, 쉬라우드를 통상의 사출성형방식에 의하여 일체로 성형할 수 있도록 하면서도 성형 후 터보팬을 금형으로부터 쉽게 분리할 수 있게 한 것이다.Korean Unexamined Patent Publication No. 2002-19160 discloses a turbo fan applied to an air conditioner. The turbofan has a rotor with a hub in the center, multiple blades coupled to the rotor, and a circular shroud that connects the blades. In addition, the turbofan is formed such that the outer diameter of the rotating plate is smaller than the inner diameter of the shroud. This allows the rotor plate, the blade and the shroud to be integrally formed by a conventional injection molding method, but also to easily separate the turbofan from the mold after molding.

그러나 이러한 터보팬은 도 1에 도시한 바와 같이, 회전판(1)이 쉬라우드(2)의 내경보다 작아 블레이드(3)의 외측 하단부분(3a)이 노출되기 때문에 터보팬이 동작할 때 블레이드(3)의 하단부분(3a)에서 생기는 와류에 의해 소음이 발생하는 문제가 있었다. 이러한 터보팬은 공기조화기 등에 설치할 때 블레이드(3)의 하단부분(3a)이 기기의 케이스(4) 내면과 근접하게 되는데, 블레이드(3)의 하단부분(3a)에서 생기는 와류가 케이스(4)의 내면에 부딪히기 때문에 송풍소음을 유발할 수 있었다. 특히 도 1의 경우처럼 블레이드(3)의 하단부분(3a)이 케이스(4) 내면과 평행 한 구조일 때 와류에 의한 송풍소음이 커질 수 있었다. However, as shown in FIG. 1, the turbofan has a blade (when the turbofan operates when the rotor plate 1 is smaller than the inner diameter of the shroud 2 and the outer lower end portion 3a of the blade 3 is exposed). There was a problem that the noise is generated by the vortex generated in the lower portion (3a) of 3). When the turbo fan is installed in an air conditioner or the like, the lower end portion 3a of the blade 3 is brought into close proximity to the inner surface of the case 4 of the device, and the vortex generated from the lower end portion 3a of the blade 3 is applied to the case 4. Because it hits the inner surface of the), it could induce blowing noise. In particular, when the lower portion 3a of the blade 3 has a structure parallel to the inner surface of the case 4, as shown in FIG. 1, the blowing noise due to the vortex could be increased.

본 발명은 이와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 송풍소음을 저감시킬 수 있도록 하는 터보팬 및 이를 갖춘 공기조화기를 제공하는 것이다.The present invention is to solve such a problem, it is an object of the present invention to provide a turbo fan and an air conditioner having the same to reduce the blowing noise.

이러한 목적을 달성하기 위한 본 발명에 따른 터보팬은 구동모터의 축에 결합되는 회전판과, 상기 회전판의 외주부에 결합된 다수의 블레이드와, 상기 블레이드 단부에 결합된 링형 쉬라우드를 포함하고, 상기 회전판 쪽의 상기 블레이드의 단부는 상기 회전판에 결합되는 내측단부와, 상기 회전판과 결합되지 않는 외측단부를 포함하며, 상기 블레이드의 외측단부는 회전중심 쪽으로부터 반경방향 외측으로 갈수록 상기 터보팬을 채용하는 기기 내면과의 이격이 커질 수 있도록 상기 회전판에 대하여 경사지게 형성된 것을 특징으로 한다.The turbofan according to the present invention for achieving this object includes a rotary plate coupled to the shaft of the drive motor, a plurality of blades coupled to the outer peripheral portion of the rotary plate, and a ring-shaped shroud coupled to the blade end, the rotary plate An end of the blade on the side includes an inner end coupled to the rotating plate, and an outer end not coupled to the rotating plate, the outer end of the blade employs the turbo fan toward the radially outward from the rotation center side It is characterized in that it is formed inclined with respect to the rotating plate so that the separation from the inner surface.

또한 상기 회전판에 대한 상기 외측단부의 경사는 5~15도인 것을 특징으로 한다.In addition, the inclination of the outer end with respect to the rotating plate is characterized in that 5 to 15 degrees.

또한 본 발명의 터보팬은 상기 회전판, 블레이드, 쉬라우드가 일체로 성형된 것을 특징으로 한다.In addition, the turbofan of the present invention is characterized in that the rotary plate, the blade, the shroud is integrally molded.

또한 본 발명에 따른 공기조화기는 본체케이스 내면에 고정된 구동모터와, 상기 구동모터의 축에 결합된 터보팬과, 상기 본체케이스 내부의 상기 터보팬 주위에 설치된 열교환기를 포함하고, 상기 터보팬은 상기 구동모터의 축에 결합되는 회 전판과, 상기 회전판의 외주부에 결합된 다수의 블레이드와, 상기 블레이드 단부에 결합된 링형 쉬라우드를 포함하고, 상기 블레이드의 상기 회전판 쪽 단부는 상기 회전판에 결합되는 내측단부와, 상기 회전판과 결합되지 않는 외측단부를 포함하며, 상기 블레이드의 외측단부는 회전중심 쪽으로부터 반경방향 외측으로 갈수록 상기 본체케이스 내면과의 이격이 커질 수 있도록 상기 회전판에 대하여 경사지게 형성된 것을 특징으로 한다.In addition, the air conditioner according to the present invention includes a drive motor fixed to the inner surface of the main body case, a turbo fan coupled to the shaft of the drive motor, a heat exchanger installed around the turbo fan inside the main body case, the turbo fan A rotating plate coupled to the shaft of the drive motor, a plurality of blades coupled to an outer circumference of the rotating plate, and a ring-shaped shroud coupled to the blade end, wherein the rotating plate side end of the blade is coupled to the rotating plate. And an inner end portion and an outer end portion not coupled to the rotating plate, wherein the outer end portion of the blade is formed to be inclined with respect to the rotating plate so that the distance from the inner surface of the main body case increases toward the radially outer side from the rotation center side. It is done.

이하에서는 본 발명에 따른 바람직한 실시 예를 첨부 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 터보팬이 채용된 천장형 공기조화기를 나타낸 단면도이다. 도시한 바와 같이, 이 공기조화기는 천장(100) 내부로 진입되어 설치되는 상자형의 본체케이스(10)와, 본체케이스(10)의 개방된 하면에 결합되며 둘레가 천장의 개구를 덮는 천장패널(20)을 구비한다. 2 is a cross-sectional view showing a ceiling air conditioner employing a turbofan according to the present invention. As shown, the air conditioner is coupled to the box-shaped main body case 10 which is installed and installed into the ceiling 100 and the open lower surface of the main body case 10, and the ceiling panel whose perimeter covers the opening of the ceiling. 20 is provided.

본체케이스(10) 내부에는 하부로부터 공기를 흡입하여 반경방향으로 토출시키는 터보팬(40)과, 이 터보팬(40)을 구동하는 구동모터(11)가 설치된다. 구동모터(11)는 본체케이스(10) 내측 상면에 고정된다. 또 터보팬(40)의 주위에는 터보팬(40)으로부터 토출되는 공기의 열교환을 위해 터보팬(40)의 둘레를 포위하는 형태로 배치된 열교환기(12)가 설치된다. 그리고 열교환기(12)의 하부에는 열교환 과정에서 생성된 응축수를 모아서 배출시키기 위한 응축수받이(13)가 설치된다. 응축수받이(13)는 천장패널(20)에 의해 지지된다.Inside the main body case 10, there is provided a turbo fan 40 for sucking air from the lower part and discharging it radially, and a drive motor 11 for driving the turbo fan 40. The drive motor 11 is fixed to the inner top surface of the body case 10. In addition, a heat exchanger 12 is disposed around the turbo fan 40 so as to surround the circumference of the turbo fan 40 for heat exchange of air discharged from the turbo fan 40. A condensate receiver 13 is installed below the heat exchanger 12 to collect and discharge the condensate generated during the heat exchange process. The condensate receiver 13 is supported by the ceiling panel 20.

천장패널(20)에는 중앙에 실내공기의 흡입을 위한 흡입구(21)가 형성되고, 흡입구(21)의 외측으로 좁고 길게 마련된 복수의 토출구(22)가 형성된다. 또 천장패널(20)의 흡입구(21)에는 공기청정을 위한 필터(23)가 설치되고, 필터(23)의 내측으로는 흡입되는 공기를 터보팬(40)의 중심부로 안내하도록 중앙에 개구(24a)가 형성된 공기안내판(24)이 설치된다. In the ceiling panel 20, a suction port 21 for suctioning indoor air is formed at a center thereof, and a plurality of discharge ports 22 that are narrow and long are formed outside the suction port 21. In addition, the air inlet 21 of the ceiling panel 20 is provided with a filter 23 for cleaning the air, and the opening in the center to guide the air sucked into the inside of the filter 23 to the center of the turbo fan 40 ( An air guide plate 24 having a 24a formed thereon is installed.

터보팬(40)은 도 3과 도 4에 도시한 바와 같이, 중심부에 구동모터(11)의 축(11a)이 결합되는 허브(41a)가 마련된 원형의 회전판(41), 회전판(41)의 전면 외주부에 결합되며 방사형으로 배치된 다수의 블레이드(42), 회전판(41) 반대편의 각 블레이드(42) 단부에 결합되는 링형 쉬라우드(43)를 구비한다.As shown in FIGS. 3 and 4, the turbo fan 40 includes a circular rotary plate 41 and a rotary plate 41 provided with a hub 41a to which a shaft 11a of the driving motor 11 is coupled to a central portion thereof. A plurality of blades 42 radially arranged and coupled to the front outer periphery, and ring shrouds 43 coupled to the ends of each blade 42 opposite to the rotating plate 41 are provided.

또 터보팬(40)은 도 4와 도 5에 도시한 바와 같이, 회전판(41)의 외경(D1)이 쉬라우드(43)의 내경(D2)과 같거나 쉬라우드(43)의 내경(D2)보다 작게 형성된다. 4 and 5, the outer diameter D1 of the rotating plate 41 is equal to the inner diameter D2 of the shroud 43 or the inner diameter D2 of the shroud 43. It is formed smaller than).

이는 사출성형을 통하여 터보팬(40)을 성형할 때 금형에서 언더컷(Under Cut:금형의 평행이동을 통하여 성형제품을 빼낼 수 없는 부분)이 생기지 않도록 함으로써 회전판(41), 블레이드(42), 쉬라우드(43)를 일체로 성형할 수 있도록 한 것이다. This is because when the turbofan 40 is molded by injection molding, the undercut (undercut) cannot be formed in the mold, so that the rotating plate 41, the blade 42, and the shira are not formed. The wood 43 is to be molded integrally.

이러한 터보팬(40)은 회전판(41)의 외경(D1)이 쉬라우드(43) 내경(D2)보다 작은 형태이므로 도 5에 도시한 바와 같이, 회전판(41) 쪽의 블레이드(42) 단부가 회전판(41)에 결합되는 내측단부(45)와, 회전판(41)에 결합되지 않는 외측단부(46)로 구성된다. 그런데 본 발명은 블레이드(42)의 회전판(41) 쪽 외측단부(46)가 회전판(41)에 대하여 소정각도(θ) 경사를 가지도록 형성된다. 경사각(θ)은 대략 5~15도 정도가 되도록 한다. 이는 터보팬(40)을 공기조화기 내에 설치한 상태에서 블레이드(42)의 외측단부(46)가 회전중심으로부터 반경방향 외측으로 갈수록 본체케이스(10)의 내면과의 이격이 점차 커질 수 있도록 하여 블레이드(42)의 외측단부(46) 쪽에서 생기는 와류에 의한 송풍소음을 최소화할 수 있도록 한 것이다. Since the outer diameter D1 of the rotor plate 41 is smaller than the inner diameter D2 of the shroud 43, the turbo fan 40 has an end portion of the blade 42 toward the rotor plate 41 as shown in FIG. 5. The inner end 45 is coupled to the rotating plate 41, and the outer end 46 is not coupled to the rotating plate 41. However, in the present invention, the outer end 46 of the blade 42 toward the rotating plate 41 is formed to have a predetermined angle θ with respect to the rotating plate 41. The inclination angle θ is about 5 to 15 degrees. This allows the space between the inner end of the main body case 10 to gradually increase as the outer end portion 46 of the blade 42 moves radially outward from the center of rotation with the turbo fan 40 installed in the air conditioner. It is to minimize the blowing noise caused by the vortex generated from the outer end 46 of the blade 42.

통상적으로 이러한 터보팬(40)이 동작하면 블레이드(42)의 외측단부(46) 쪽에서 와류가 생기고, 이 와류는 반경방향 외측으로 갈수록 점차 성장하는데, 본 발명은 와류의 성장과 비례하는 형태로 블레이드(42)의 외측단부(46)를 경사지게 함으로써 블레이드(42)의 외측단부(46) 쪽에서 생기는 와류와 본체케이스(10) 내면의 충돌을 최소화할 수 있도록 한 것이다. 그리고 이를 통해 송풍소음을 줄일 수 있도록 한 것이다.Typically, when the turbofan 40 is operated, a vortex is generated at the outer end portion 46 of the blade 42, and the vortex gradually grows radially outward, and the present invention is in a form proportional to the growth of the vortex. By inclining the outer end portion 46 of the 42, the collision between the vortex generated at the outer end portion 46 side of the blade 42 and the inner surface of the main body case 10 can be minimized. And through this it is possible to reduce the blowing noise.

다음은 이러한 터보팬이 채용된 천장형 공기조화기의 동작을 설명한다.The following describes the operation of the ceiling air conditioner employing such a turbo fan.

도 2에 도시한 바와 같이, 구동모터(11)의 동작으로 터보팬(40)이 회전하면, 천장패널(20) 중앙의 흡입구(21)를 통해 실내공기가 흡입된다. 흡입되는 실내공기는 필터(23)를 지나면서 정화된 후 공기안내판(24)의 개구(24a)를 통해 터보팬(40)으로 유입된다. 그리고 이 공기는 터보팬(40)의 회전력에 의해 터보팬(40)의 둘레방향(열교환기 쪽)으로 선회하며 토출된다. 터보팬(40)으로부터 토출된 공기는 열교환기(12)를 통과하면서 냉기가 된 후, 천장패널(20)의 토출구들(22)을 통해 다시 실내공간으로 공급된다.As shown in FIG. 2, when the turbo fan 40 is rotated by the operation of the driving motor 11, indoor air is sucked through the inlet 21 at the center of the ceiling panel 20. The indoor air that is sucked in is purged while passing through the filter 23 and then flows into the turbofan 40 through the opening 24a of the air guide plate 24. This air is discharged while turning in the circumferential direction (the heat exchanger side) of the turbofan 40 by the rotational force of the turbofan 40. The air discharged from the turbo fan 40 becomes cold while passing through the heat exchanger 12, and then is supplied back to the indoor space through the discharge ports 22 of the ceiling panel 20.

이러한 동작이 이루어질 때 터보팬(40)에 의해 송풍되는 공기는 도 5에 도시한 바와 같이, 터보팬(40)의 반경방향으로 토출됨과 동시에 블레이드(42)의 회전판(41) 쪽 외측단부(46) 방향으로도 토출된다. 이때 블레이드(42)의 외측단부(46) 쪽에서 생기는 와류는 회전의 영향으로 반경방향 외측으로 갈수록 성장하는데, 본 발명은 블레이드(42)의 외측단부(46)가 와류의 성장과 비례하는 형태의 경사를 구비하기 때문에 이 와류와 본체케이스(10) 내면의 충돌을 최소화할 수 있다. 따라서 송풍소음을 저감시킬 수 있다.When this operation is made, the air blown by the turbofan 40 is discharged in the radial direction of the turbofan 40 as shown in FIG. 5, and at the same time, the outer end 46 of the blade 42 toward the rotating plate 41. It is discharged also in the direction of). At this time, the vortex generated from the outer end portion 46 side of the blade 42 grows radially outward under the influence of the rotation, the present invention is inclined in the form of the outer end portion of the blade 42 is proportional to the growth of the vortex Since the collision between the vortex and the inner surface of the main body case 10 can be minimized. Therefore, the blowing noise can be reduced.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 터보팬은 회전판과 연결되지 않은 블레이드의 외측단부가 와류의 성장과 비례하는 형태의 경사를 구비하기 때문에 블레이드의 외측단부 쪽에서 생기는 와류와 본체케이스의 충돌을 최소화할 수 있다. 따라서 송풍소음을 저감시킬 수 있는 효과가 있다.As described in detail above, in the turbofan according to the present invention, since the outer end of the blade, which is not connected to the rotating plate, has an inclination that is proportional to the growth of the vortex, the collision between the vortex and the main body case occurring at the outer end of the blade is prevented. It can be minimized. Therefore, there is an effect that can reduce the blowing noise.

Claims (6)

구동모터의 축에 결합되는 회전판과, 상기 회전판의 외주부에 결합된 다수의 블레이드와, 상기 블레이드 단부에 결합된 링형 쉬라우드를 포함하고, 상기 회전판 쪽의 상기 블레이드의 단부는 상기 회전판에 결합되는 내측단부와, 상기 회전판과 결합되지 않는 외측단부를 포함하는 터보팬에 있어서,A rotating plate coupled to the shaft of the drive motor, a plurality of blades coupled to an outer circumference of the rotating plate, and a ring-shaped shroud coupled to the blade end, wherein an end of the blade toward the rotating plate is coupled to the rotating plate. In the turbofan comprising an end and an outer end that is not coupled to the rotating plate, 상기 블레이드의 외측단부는 회전중심 쪽으로부터 반경방향 외측으로 갈수록 상기 터보팬을 채용하는 기기 내면과의 이격이 커지도록 상기 회전판에 대하여 경사지게 형성된 것을 특징으로 하는 터보팬.And an outer end portion of the blade is formed to be inclined with respect to the rotating plate so as to be spaced apart from the inner surface of the device employing the turbo fan toward the radially outer side from the center of rotation. 제1항에 있어서,The method of claim 1, 상기 회전판에 대한 상기 외측단부의 경사는 5~15도인 것을 특징으로 하는 터보팬.Turbo fan characterized in that the inclination of the outer end with respect to the rotating plate is 5 ~ 15 degrees. 제2항에 있어서,The method of claim 2, 상기 회전판, 블레이드, 쉬라우드가 일체로 성형된 것을 특징으로 하는 터보팬.Turbo fan characterized in that the rotating plate, the blade, the shroud is integrally molded. 본체케이스와, 상기 본체케이스 내면에 고정된 구동모터와, 상기 구동모터의 축에 결합된 터보팬과, 상기 본체케이스 내부의 상기 터보팬 주위에 설치된 열교환 기를 포함하고, A main body case, a drive motor fixed to an inner surface of the main body case, a turbo fan coupled to the shaft of the drive motor, a heat exchanger installed around the turbo fan inside the main body case, 상기 터보팬은 상기 구동모터의 축에 결합되는 회전판과, 상기 회전판의 외주부에 결합된 다수의 블레이드와, 상기 블레이드 단부에 결합된 링형 쉬라우드를 포함하고, 상기 블레이드의 상기 회전판 쪽 단부는 상기 회전판에 결합되는 내측단부와, 상기 회전판과 결합되지 않는 외측단부를 포함하며, The turbofan includes a rotary plate coupled to the shaft of the drive motor, a plurality of blades coupled to an outer circumference of the rotary plate, and a ring-shaped shroud coupled to the blade end, wherein the rotary plate side end of the blade is the rotary plate. An inner end coupled to the outer end and an outer end not coupled to the rotating plate, 상기 블레이드의 외측단부는 회전중심 쪽으로부터 반경방향 외측으로 갈수록 상기 본체케이스 내면과의 이격이 커지도록 상기 회전판에 대하여 경사지게 형성된 것을 특징으로 공기조화기.And an outer end portion of the blade is formed to be inclined with respect to the rotating plate so as to be spaced apart from the inner surface of the main body case in a radially outward direction from the center of rotation. 제4항에 있어서,The method of claim 4, wherein 상기 회전판에 대한 상기 외측단부의 경사는 5~15도인 것을 특징으로 하는 공기조화기.The inclination of the outer end with respect to the rotating plate is an air conditioner, characterized in that 5 to 15 degrees. 제5항에 있어서,The method of claim 5, 상기 회전판, 블레이드, 쉬라우드가 일체로 성형된 것을 특징으로 하는 공기조화기.And the rotating plate, the blade and the shroud are integrally formed.
KR1020060114806A 2006-11-20 2006-11-20 Turbofan and air conditioner having the same KR20080045568A (en)

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