KR100275045B1 - Axial fan structure for room air conditioner - Google Patents

Axial fan structure for room air conditioner Download PDF

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Publication number
KR100275045B1
KR100275045B1 KR1019970041463A KR19970041463A KR100275045B1 KR 100275045 B1 KR100275045 B1 KR 100275045B1 KR 1019970041463 A KR1019970041463 A KR 1019970041463A KR 19970041463 A KR19970041463 A KR 19970041463A KR 100275045 B1 KR100275045 B1 KR 100275045B1
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South Korea
Prior art keywords
axial fan
outdoor unit
fan
rac
hub
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KR1019970041463A
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Korean (ko)
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KR19990018312A (en
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김창준
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구자홍
엘지전자주식회사
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    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F04D29/386—Skewed blades

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: An axial fan structure for room air conditioner is provided to increase air volume of outdoor unit, while reducing a noise. CONSTITUTION: An axial fan(10) has a maximum camber position of 0.7, distributed uniformly from a hub(10b) to a tip(10c), and a maximum camber forming a curved distribution of 3.0 to 7.0 to 6.5 percent from the hub 0.0 to 0.75 point to 1.0 position. The axial fan has a pitch angle forming a linear distribution of 42.0 to 31.0 degrees from the hub to the tip. The axial fan has a sweep angle(SA) of 47.0 degrees at the tip. When such an axial fan is applied to an outdoor unit of room air conditioner, the outdoor unit has an increased air volume, while reducing a noise.

Description

알에이씨 축류팬 구조ALC Axial Flow Fan Structure

본 발명은 알에이씨(RAC: Room Air Conditioner) 실외기의 축류팬에 관한 것으로서, 특히 RAC 실외기의 풍량을 증가시키고 소음을 감소시킬수 있도록 하는 알에이씨 축류팬 구조에 관한 것이다.The present invention relates to an axial flow fan of a room air conditioner (RAC) outdoor unit, and more particularly to an axial axial flow fan structure that can increase the air volume of the RAC outdoor unit and reduce noise.

일반적으로, RAC 실외기는 도 1에 도시된 바와같이, 모터(1)의 회전구동과 동시에 연동하면서 외부의 찬공기를 흡입하는 팬(2)과, 상기 팬(2)에 의해 흡입되는 외부의 찬공기를 더운공기로 전환시키는 열교환기(3)와, 상기 열교환기(3)에 의해 전환된 더운공기를 다시 외부로 방출시키기 위한 그릴(4)로 이루어져 있으며, 상기 팬(2)은 모터(1)의 회전구동과 동시에 연동하면서 정압차를 발생시켜 공기의 유동흐름을 발생시키는 역할을 한다.In general, as shown in FIG. 1, the RAC outdoor unit includes a fan 2 that sucks external cold air while interlocking with the rotational drive of the motor 1, and an external cold suction sucked by the fan 2. A heat exchanger (3) for converting air into hot air, and a grill (4) for discharging the hot air converted by the heat exchanger (3) back to the outside, and the fan (2) includes a motor (1). At the same time, the positive pressure difference is generated while interlocking with the rotational drive of) to generate the flow of air.

따라서, 상기 팬(2)이 회전하는 동안에는 열교환기(3)에 의해 연속적으로 냉각이 되므로서, RAC 실외기의 냉동사이클은 정상적으로 작동하게 되는 것이다.Therefore, the cooling cycle of the RAC outdoor unit is normally operated by being continuously cooled by the heat exchanger 3 while the fan 2 is rotating.

이를 근거로 한 종래 RAC 실외기에서는 도시하지는 않았지만 사류팬 구조를 적용하였으며, 상기 사류팬의 날개(Blade) 갯수는 4개로 이루어져 있다.Although not shown in the related art RAC outdoor unit based on this, a vortex fan structure is applied, and the number of blades of the vortex fan is composed of four blades.

그리고, 상기 사류팬의 팬 직경은 380mm이고, 리딩 에지의 허브직경은 90mm이며, 트레일링 에지의 허브직경은 130mm로 성형된다.The fan diameter of the vortex fan is 380 mm, the hub diameter of the leading edge is 90 mm, and the hub diameter of the trailing edge is formed to 130 mm.

또한, 상기 사류팬의 날개 폭은 123.6mm인 상태에서 그 회전방향이 바람이 나오는 쪽에서 팬을 보았을때 시계방향(CW)으로 진행되는 것이다.In addition, the wing width of the drift fan is 123.6mm in the state that the rotation direction proceeds clockwise (CW) when viewed from the fan side.

그러나, RAC 실외기에 종래의 사류팬을 적용하는 경우 도 2에서와 같은 일예(9평의 RAC실외기에 적용)의 그래프를 통해 알수 있듯이 송풍성능이 풍량 25.5 (m3/min)에서 소음 45.7dB(A)이 발생하게 되므로서, RAC 실외기의 풍량이 감소함은 물론 소음이 증가되어 소비자에게 조용한 RAC 실외기의 제품 만족도를 제공하지 못하는 문제점이 초래되었다.However, the noise in Fig example As you can see from the graphs of (applied to the outdoor unit 9 square meters RAC) 25.5 The blowing performance of the air volume (m 3 / min) as in the second case of applying the conventional mixed flow fan in the outdoor unit RAC 45.7dB (A As a result, the air volume of the RAC outdoor unit is reduced, as well as the noise is increased, resulting in a problem that the consumer cannot provide a quiet product satisfaction of the RAC outdoor unit.

따라서, 본 발명은 이와같은 문제점을 해결하기 위해 안출된 것으로서, RAC 실외기의 풍량을 증가시키고 소음을 감소시킬수 있는 RAC 실외기의 축류팬을 성형 제작하므로서, 풍량을 증가시킬수 있도록 함은 물론 사류팬보다 동일풍량에서 소음을 일정(예: 2dB(A))하게 저감시켜 소비자에게 조용한 RAC 실외기의 제품 만족도를 제공하고자 하는데 그 주된 목적이 있는 것이다.Accordingly, the present invention has been made to solve such a problem, by forming the axial fan of the RAC outdoor unit that can increase the air volume of the RAC outdoor unit and reduce the noise, it is possible to increase the amount of air, of course the same as the four-stream fan The main purpose is to provide a quiet RAC outdoor unit's product satisfaction by consistently reducing the noise in the air volume (eg 2dB (A)).

도 1은 일반적인 RAC 실외기의 구조를 보인 구성도.1 is a block diagram showing the structure of a typical RAC outdoor unit.

도 2는 종래 사류팬에 의한 RAC 실외기의 풍량/소음 관계를 보인 그래프.Figure 2 is a graph showing the air volume / noise relationship of the RAC outdoor unit by a conventional four-flow fan.

도 3은 본 발명 RAC 축류팬의 구조를 보인 평면도.Figure 3 is a plan view showing the structure of the RAC axial fan of the present invention.

도 4는 본 발명 RAC 축류팬의 구조를 보인 측면도.Figure 4 is a side view showing the structure of the present invention RAC axial fan.

도 5는 본 발명 축류팬의 날개 단면상에 대한 최대캠버 정의를 보인 도면.Figure 5 shows the maximum camber definition on the blade cross section of the axial fan of the present invention.

도 6은 본 발명 축류팬의 날개 단면상에 대한 피치각의 정의를 보인 도면.Figure 6 shows the definition of the pitch angle on the blade cross section of the axial fan of the present invention.

도 7은 RAC 실외기에 대한 종래의 사류팬과 본 발명 축류팬의 소음 비교를 보인 그래프.Figure 7 is a graph showing the noise comparison of the conventional circulating fan and the present invention axial fan for the RAC outdoor unit.

도 8은 RAC 실외기에 대한 종래의 사류팬과 본 발명 축류팬의 풍량에 대한 소음 비교를 보인 도표.8 is a diagram showing a noise comparison of the conventional airflow fan and the present invention axial flow fan of the RAC outdoor unit.

도 9는 본 발명 축류팬 날개의 경계 데이터를 도출하기 위한 좌표도.9 is a coordinate diagram for deriving boundary data of the axial fan blade of the present invention.

도 10은 본 발명 축류팬 날개의 각축(X,Y,Z)에 대한 경계 데이터값을 나타내는 도표.10 is a table showing boundary data values for each axis (X, Y, Z) of the axial fan blade of the present invention.

상기 목적 달성을 위한 RAC 축류팬 구조는 첨부된 도 3 내지 도 6에 도시된 바와같이,RAC axial fan structure for achieving the above object is as shown in Figure 3 to 6 attached,

모터(1) 및 팬(2)의 회전에 따른 공기의 유동흐름을 열교환기(3)를 통해 전환시킨 후 그릴(4)을 통해 방출시키는 RAC 실외기에 있어,In the RAC outdoor unit which converts the flow of air according to the rotation of the motor (1) and the fan (2) through the heat exchanger (3) and then discharges through the grill (4),

상기 모터(1)의 회전구동과 동시에 연동하는 팬(2)을 축류팬(10)으로 적용시킨 것으로서, 상기 축류팬(10)의 날개(10a) 갯수(d)를 4개로 구성하고 그 폭(B)을 132±1mm 로 하였다.The fan 2, which interlocks with the rotational drive of the motor 1, is applied to the axial fan 10. The number d of the blades 10a of the axial fan 10 is composed of four and the width ( B) was set to 132 ± 1 mm.

이때, 상기 축류팬(10)의 직경(Dt)은 380±1mm로 하고, 리딩 에지(LE: Leading Edge) 및 트레일링 에지(TE: Trailing Edge)의 허브(10b) 직경(Dh)을 100±1mm 로 하므로서, 허브 경사각을 0°로 만든다.At this time, the diameter (Dt) of the axial fan 10 is 380 ± 1mm, the diameter (Dh) of the hub (10b) of the leading edge (LE: Leading Edge) and trailing edge (TE: 100 ±) By setting it as 1 mm, the inclination angle of the hub is made 0 °.

그리고, 상기 축류팬(10)의 회전방향은 바람이 나오는 방향에서 상기 축류팬(10)을 보았을 때 시계방향(CW)으로 하며, 상기 축류팬(10)의 최대 캠버위치(MCP: Maximum Camber Position)는 0.7로 하여 허브(10b)에서 팁(10c)까지 일정하게 분포시켰다.In addition, the rotational direction of the axial fan 10 is clockwise (CW) when the axial fan 10 is viewed from the wind direction, and the maximum camber position (MCP) of the axial fan 10. ) Was set to 0.7 and distributed uniformly from the hub 10b to the tip 10c.

또한, 상기 축류팬(10)의 최대캠버(MC)는,In addition, the maximum camber (MC) of the axial fan 10,

Figure 1019970041463_B1_M0001
Figure 1019970041463_B1_M0001

에서와 같이, 임의의 반경에서 날개(10a)가 최대로 굽어진 경우로서 그 높이를 리딩 에지(LE)와 트레일링 에지(TE)를 직선으로 잇는 코드길이(CH)로 나누고 이에 100으로 곱하여 백분율로 표시하는 것으로서, 이는 0.0의 허브(10b)로 부터 0.75지점에서 1.0위치의 팁(10c)까지 각각 3.0∼7.0%∼6.5%의 곡선분포를 이루도록 한다.As shown in Fig. 2, the height of the blade 10a is bent at an arbitrary radius, and the height is divided by the code length CH connecting the leading edge LE and trailing edge TE in a straight line and multiplied by 100 to obtain a percentage. As shown in Fig. 2, this results in a curve distribution of 3.0 to 7.0% to 6.5% from the hub 10b of 0.0 to the tip 10c at the 1.0 position at the 0.75 point.

한편, 상기 축류팬(10)의 피치각도(PA: Pitch Angle)는 허브(10b)에서 팁(10c)까지 42.0°∼31.0°로 선형적인 분포를 이루도록 한다.On the other hand, the pitch angle (PA: Pitch Angle) of the axial fan 10 to form a linear distribution from 42.0 ° to 31.0 ° from the hub (10b) to the tip (10c).

그리고, 상기 축류팬(10)의 스윕각(SA: Sweep Angle)은 허브(10b)에서 날개(10a)의 중점과 팁(10c)에서 날개(10a)의 중점을 연결한 선이 축과 수직인 선과 이루는 각을 나타내는 것으로서, 이는 상기 팁(10c)에서 47.0°를 가지도록 한다.In addition, a sweep angle (SA) of the axial fan 10 is a line connecting the midpoint of the blade 10a at the hub 10b and the midpoint of the blade 10a at the tip 10c to be perpendicular to the axis. Representing an angle with the line, which has 47.0 ° at the tip 10c.

따라서, 상기와 같이 제작된 축류팬(10)을 RAC 실외기에 적용하면, 상기 RAC 실외기의 풍량을 증가시킬수 있을뿐만 아니라 그 소음을 저감시키는 효과가 있다.Therefore, when the axial fan 10 manufactured as described above is applied to the RAC outdoor unit, not only can the air volume of the RAC outdoor unit be increased, but also the noise is reduced.

즉, 도 7 및 도 8에 도시된 바와같이, 종래의 사류팬과 동일한 풍량이 작용하더라도 그 소음은 약 2dB 정도가 저감되는 효과를 창출해 낼수 있게 되는 것이다.That is, as shown in Figs. 7 and 8, even if the same amount of air flow as the conventional four-flow fan, the noise is able to create an effect of reducing about 2dB.

한편, 도 9는 상기 축류팬(10)의 날개(10a)가 가지는 경계 데이터를 나타내는 하나의 일실시예를 도시한 것으로서,Meanwhile, FIG. 9 illustrates one embodiment showing boundary data of the blade 10a of the axial fan 10.

상기 날개(10a)의 경계점(1,41,81,121)에서는 도 10에 나타나는 바와같이, 각각의 X/Y/Z 축에 대한 경계 데이터를 얻을수 있으며, 이를 통해 상기 날개(10a)의 경계점 1과 161은 동일함을 알수 있다.At the boundary points 1, 41, 81, and 121 of the wing 10a, as shown in FIG. 10, boundary data for each X / Y / Z axis can be obtained, and thus, the boundary points 1 and 161 of the wing 10a. Is the same.

이상에서 설명한 바와같이 본 발명은 RAC 실외기의 풍량을 증가시키고 소음을 감소시킬수 있는 RAC 실외기의 축류팬을 성형 제작하므로서, 풍량을 증가시킬수 있도록 함은 물론 사류팬보다 동일풍량에서 소음을 저감시켜 소비자에게 조용한 RAC 실외기의 제품 만족도를 제공하는 효과가 있는 것이다.As described above, the present invention forms and manufactures the axial outdoor fan of the RAC outdoor unit which can increase the air volume of the RAC outdoor unit and reduce the noise, thereby increasing the air volume and of course reducing the noise at the same air volume than the four-stream fan. This has the effect of providing product satisfaction of the quiet RAC outdoor unit.

Claims (1)

모터 및 축류팬의 회전에 따른 공기의 유동흐름을 열교환기(3)를 통해 전환시킨 후 그릴을 통해 방출시키는 RAC 실외기에 있어서,In the RAC outdoor unit for converting the flow of air according to the rotation of the motor and the axial fan through the heat exchanger (3) and then through the grill, 축류팬(10)의 최대캠버(MCP)는 0.7로 하여 허브(10b)에서 팀(10c)까지 일정하게 분포시키고, 최대캠버(MC)는 0.0의 허브(10b)로 부터 0.75지점에서 1.0위치의 털(10c)까지 각각 3.0~7.0%~6.5%의 곡선분포를 이루도록 하고, 상기 축류팬(10)의 피치각도(PA)는 허브(10b)에서 팁(10c)까지 42.0'~31.0'로 선형적인 분포를 이루도록 하고, 스웝각(SA)은 팁(10c)에서 47.0'를 가지도록 한 것을 특징으로 하는 알에이씨 축류팬 구조.The maximum camber (MCP) of the axial fan 10 is 0.7, which is uniformly distributed from the hub 10b to the team 10c, and the maximum camber MC is 1.0 at a position 0.75 from the hub 10b of 0.0. Each of the hairs 10c has a curve distribution of 3.0 to 7.0% to 6.5%, and the pitch angle PA of the axial fan 10 is linear from 42.0 'to 31.0' from the hub 10b to the tip 10c. Axial axial fan structure, characterized in that to achieve a normal distribution, the angle of swim (SA) has a 47.0 'at the tip (10c).
KR1019970041463A 1997-08-27 1997-08-27 Axial fan structure for room air conditioner KR100275045B1 (en)

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KR100381202B1 (en) * 1999-01-19 2003-04-21 엘지전자 주식회사 An Axial Flow Fan with BLDC Motor
KR100402478B1 (en) * 2001-05-17 2003-10-22 엘지전자 주식회사 Fan assembly for refrigerator
KR100484828B1 (en) * 2002-11-27 2005-04-22 엘지전자 주식회사 Refrigerator's cool air circulation axial flow fan

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