KR960009348Y1 - An air blower - Google Patents
An air blower Download PDFInfo
- Publication number
- KR960009348Y1 KR960009348Y1 KR2019930029579U KR930029579U KR960009348Y1 KR 960009348 Y1 KR960009348 Y1 KR 960009348Y1 KR 2019930029579 U KR2019930029579 U KR 2019930029579U KR 930029579 U KR930029579 U KR 930029579U KR 960009348 Y1 KR960009348 Y1 KR 960009348Y1
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- South Korea
- Prior art keywords
- fan
- main plate
- air
- blade
- air conditioner
- 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.)
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- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Classifications
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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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0022—Centrifugal or radial fans
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- 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
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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
내용 없음.No content.
Description
제1도의 (a)(b)는 종래 공기조화기용 양흡입 송풍기의 정면도 및 측면도.(A) (b) of FIG. 1 is a front view and a side view of a conventional double suction blower for an air conditioner.
제2도의 내지 제4도는 종래 공기조화기용 양흡입 송풍기의 팬부 구성을 보인 도면으로서, 제2도의 (a)는 팬의 정면도, (b)는 팬의 측단면도.2 to 4 are views showing a fan portion of a conventional double-suction blower for an air conditioner, (a) is a front view of the fan, (b) is a side cross-sectional view of the fan.
제3도는 팬부 분해 사시도.3 is an exploded perspective view of the fan unit.
제4도는 공기조화기용 양흡입 송풍기의 공기 유동분포도.4 is an air flow distribution diagram of a double suction blower for an air conditioner.
제5도는 본 고안에 의한 공기조화기용 송풍기 팬부 구성을 보인 도면으로서, (a)(b)는 팬부 정면도 및 측면도.5 is a view showing the configuration of a blower fan unit for an air conditioner according to the present invention, (a) (b) is a front view and a side view of the fan.
제6도는 팬의 정면도 및 측면도.6 is a front and side view of the fan.
제7도는 팬부 분해 사시도.7 is an exploded perspective view of the fan portion.
제8도는 (a)(b)는 부채형 날개를 서로 다른 방향에서 보인 구성도.8 is a view showing (a) and (b) showing fan-shaped wings in different directions.
제9도는 본 고안에 의한 공기화기용 송풍기의 공기유동분포도.9 is an air flow distribution diagram of the blower for an air conditioner according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
6 : 모터 12 : 팬링6: motor 12: faning
15 : 주판 16 : 보스15: Abacus 16: Boss
17 : 부채형 임펠러 18 : 부채형 날개17: fan type impeller 18: fan type wings
본 고안은 공기조화기용 송풍기에 관한 것으로, 특히 날개 통과후 토출되는 공기의 날개 끝 단부 박리에 의한 난류 소음, 주판측의 공기 속도가 빠른 속도 불균일에 의한 박리 및 대드 죤(dead zone) 발생에 따른 공기 난류 소음 및 토출시 하우징과의 간섭에 의한 회전음을 저감하여 에 저소음화하도록 한 공기 조화기용 송풍기에 관한 것이다.The present invention relates to a blower for an air conditioner, in particular, turbulent noise due to peeling of the blade tip end of the air discharged after passing through the blade, due to the high speed velocity unevenness of the abacus and the peeling due to the generation of dead zone The present invention relates to a blower for an air conditioner, which reduces noise by rotating turbulence due to air turbulence noise and interference with a housing during discharge.
종래 공기조화기용 송풍기는 제1도에 그 실시형태가 도시되어 있다. 제1도(가)(나)는 종래 공기조화기용 송풍기의 정면도 및 측면도이고, 도면에서 1은 토출구 루버, 2는 캐비닛, 3은 전면판넬, 4는 하우징 커버, 5는 보강판, 6은 모터, 7은 임펠러, 8은 하우징, 9는 열교환기, 10은 흡입구 그릴을 각각 보인 것으로, 캐비닛(2)의 내측 중간부에 모터(6)가 설치되고, 그 하부에 열교환기(9)가 경사지게 설치되어 모터(6)의 구동력으로 임펠러(7)가 회전함에 따라 하부의 흡입구 그릴(10)로 흡입되는 공기가 열교환기(9)에서 열교환되어 토출구 루버(1)로 토출되도록 구성되어 있다.An embodiment of a conventional air conditioner blower is shown in FIG. 1 (a) (b) is a front view and a side view of a conventional air conditioner blower, in the drawings, 1 is a discharge port louver, 2 is a cabinet, 3 is a front panel, 4 is a housing cover, 5 is a reinforcement plate, 6 is A motor, 7 an impeller, 8 a housing, 9 a heat exchanger and 10 a suction inlet grill, wherein a motor 6 is installed in the inner middle of the cabinet 2 and a heat exchanger 9 is provided below. As the impeller 7 is rotated by the driving force of the motor 6, the air sucked into the inlet grille 10 at the lower side is heat-exchanged in the heat exchanger 9 to be discharged to the discharge port louver 1.
제2도 (a)(b)는 종래 팬부(fan 部)의 정면도 및 측면도를 보인 것이고, 제3도는 팬부 분해 사시도로서, 종래의 송풍팬은 캐비닛(2)에 보강판(5)이 결합되고, 모터(6)가 보강판(5)에 대하여 볼트로 체결되며, 모터(6)의 축에 임펠러(7)가 고정됨과 아울러, 하우징(8)과 하우징 커버(4)가 나사 결합되어 보강판(5)에 지지되고, 하우징 커버(4)에 오리피스(11)가 결합된 구성으로 되어 있다.Figure 2 (a) (b) is a front view and a side view of a conventional fan (fan section), Figure 3 is an exploded perspective view of the fan, the conventional blowing fan is a reinforcing plate (5) is coupled to the cabinet (2) The motor 6 is bolted to the reinforcing plate 5, the impeller 7 is fixed to the shaft of the motor 6, and the housing 8 and the housing cover 4 are screwed together to reinforce. It is supported by the plate 5, and the orifice 11 is couple | bonded with the housing cover 4, and it is set as the structure.
그리고, 상기 임펠러(7)는 제2도 (a)(b)에 도시한 바와같이, 주판(15)을 중심으로 양편에 다수의 날개(13)를 결합한 양흡입형으로서 날개(13)의 내, 외측 주연부를 따라 팬링(12)으로 지지되어 있으며, 주판(15)의 중심에는 모터(6)의 축과의 결합을 위하여 보스(16)가 형성되고, 강도 보강을 위해 리브(14)가 형성되어 있다.The impeller 7 is a double suction type in which a plurality of wings 13 are coupled to both sides of the main plate 15, as shown in FIG. 2 (a) (b). , And is supported by the fan 12 along the outer periphery, and the boss 16 is formed at the center of the main plate 15 for engagement with the shaft of the motor 6, and the rib 14 is formed for strength reinforcement. It is.
상기한 바와같은 종래의 공기조화기용 송풍기는 제1도 및 제4도를 참조하면, 흡입구 그릴(10)을 통해 실내의 공기를 흡입하고, 흡입된 공기는 열교환기(9)를 거치면서 관내를 순환하는 차가운 냉매에 의해 열교환이 이루어져 냉각되며, 이 냉각된 공기는 오리피스(11)를 통해 양편에서 하우징 커버(4)와 하우징(8)을 통하여 송풍기 내측으로 흡입되어 주판(15)의 양편에 부착된 날개(13)의 회전에 의해 원심력이 발생하여 기압, 가속되어지며, 모터(6)의 축방향으로 유입된 공기는 90도 직각으로 회전하여 날개(13)를 통하여 토출되며, 토출되는 공기는 하우징(8)에서 모아져서 토출구 루버(1)를 통해 외부로 토출된다.Referring to FIGS. 1 and 4, the conventional air conditioner blower as described above sucks the air in the room through the inlet grill 10, and the sucked air passes through the heat exchanger 9. The heat exchange is cooled by circulating cold refrigerant, and the cooled air is sucked into the blower through the housing cover 4 and the housing 8 from both sides through the orifice 11 and attached to both sides of the main plate 15. The centrifugal force is generated by the rotation of the vanes 13 and the air pressure is accelerated. The air introduced in the axial direction of the motor 6 is rotated at a right angle of 90 degrees and is discharged through the vanes 13. Collected from the housing 8 and discharged to the outside through the discharge port louver (1).
상기한 바와같은 종래 공기조화기용 송풍기는 양흡입 시로코팬의 형성을 가지고 있으며, 임펠러(7)을 통해 양측의 오리피스(11)를 통해 흡입되면서 흡입 손실이 발생하며, 날개(13)의 회전에 의한 원심력에 의해 90도 꺽여져서 날개(13)에 유이되어 하우징(8)으로 토출되는 바, 제4도에 도시한 바와같이, 오리피스(11)를 통해 양편에서 유입되는 공기가 오리피스(11) 근방에서는 토출을 발생시키지 못하고, 재순환되는 영역이 되며, 주판(15)의 부근은 유동 속도가 빠르다. 따라서, 임펠러(7)의 날개(13)의 출구 유동은 전 유동면적의 40 내지 60%만이 실제 유동영역이 되며, 이러한 유동 불균일은 토출 풍량의 감소 및 재순환 영역 발생에 따른 흡입 소음 증대를 가져오며, 주판(15)부근의 유동 속도 증대는 하우징(8)과의 간섭 증대로 발생하는 B, P, F 소음(회전음)의 증가를 가져와 토출소음이 증대되는 결함이 유발되는 것이었다.The conventional air conditioner blower as described above has the formation of a double suction sirocco fan, the suction loss occurs while being sucked through the orifice 11 on both sides through the impeller (7), due to the rotation of the wing 13 It is bent 90 degrees by centrifugal force and is discharged to the housing 8 as shown in FIG. 4. As shown in FIG. 4, air flowing from both sides through the orifice 11 is near the orifice 11. It does not generate discharge and becomes a region to be recycled, and the flow rate is high in the vicinity of the main plate 15. Therefore, the outlet flow of the wing 13 of the impeller 7 becomes only the actual flow area of 40 to 60% of the total flow area, and this non-uniformity of the flow leads to a decrease in the discharge air volume and an increase in suction noise due to the generation of the recirculation area. Increasing the flow rate near the main plate 15 caused an increase in B, P, and F noises (rotational sound) caused by increased interference with the housing 8, causing a defect in which discharge noise was increased.
한편, 종래에는 일본 공개실용신안 평2-132897호와 같이 날개의 폭을 주판측에서 넓고 끝단부에서 좁아지게 형서안 다익 송풍기가 알려지고 있다.On the other hand, as in Japanese Unexamined Utility Model No. Hei 2-132897, the Xi'an double-wing blower is known so that the width of the blade is wide at the abacus and narrowed at the end.
그러나 이러한 구조에서는 주판부측에서의 날개 두께를 끝단부(부판부측)에서의 날개 두께 보다 넓게 형성하고 있기 때문에 날개의 끝단부분으로 갈수록 원심력이 커지게 되어 주판부 부분에서 토출되는 공기의 유속을 훨씬 증가시켜 줌으로써 주판부측에 집중되는 흡입공기를 종래 기술에 비해 더 많게 하면서 증가된 흡입공기를 모두 원활히 토출시킬 수 있게 되는 것으로서 토출되는 공기의 유동분포가 주판부측에 더 집중되어 단위시간당 유동분포에서 볼 때 송풍 성능이 향상될 수는 있으나, 토출되는 공기가 송풍팬 하우징과 충돌하면서 간섭을 일으키고 소음을 발생시키는데 이러한 소음 발생 현상은 날개의 외경과 하우징과의 거리가 주판부측으로 갈수록 더욱 작아지고 유속은 더욱 커져 결국 하우징 벽면에 충돌하는 힘이 급격히 상승되어 소음이 매우 커지게 되는 것이었다.However, in this structure, since the wing thickness at the abacus part side is formed to be wider than the blade thickness at the end part (subplate part side), the centrifugal force becomes larger toward the tip of the wing, which increases the flow velocity of air discharged from the main part part. It is possible to smoothly discharge all the intake air increased while increasing the suction air concentrated on the abacus part compared to the prior art, and the flow distribution of the discharged air is more concentrated on the abacus part, and viewed from the flow distribution per unit time. Although the air blowing performance can be improved, the discharged air collides with the blower fan housing, causing interference and generating noise. The noise generation phenomenon is smaller as the distance between the outer diameter of the wing and the housing toward the abacus part and the flow rate is further increased. And eventually the force that strikes the housing wall rises sharply, The negative was that would be very large.
본 고안은 종래 공기조화기용 송풍기의 토출유속 불균일에 따른 흡입 소음 및 회전음이 저감을 위해 날개의 입구측 폭이 넓고, 주판측 폭이 좁은 부채형 날개를 채용하여 입구측, 팬링측 외경을 크게하고, 주판측 외경이 작도록 날개를 경사지게 설치함으로써, 출구 유동의 속도 불균일을 완화하고, 속도 균일화를 통해 재순환 영역발생을 막아 흡입 소음을 저감하고, 특히 주판 부근의 빠른 유속에 따른 하우징과의 간섭에 의한 회전 소음의 발생을 감소할 수 있는 공기조화기용 송풍기를 제공하기 위한 것이다.The present invention has a wider inlet side width and a narrow main plate side fan blade to reduce suction noise and rotational sound due to the discharge flow velocity variation of the conventional air conditioner blower. In addition, by inclining the vane so that the outer diameter of the main plate side is small, the speed unevenness of the outlet flow is alleviated, and the speed uniformity prevents the generation of the recirculation area, thereby reducing the intake noise, especially the interference with the housing due to the high flow rate near the main plate. It is to provide a blower for an air conditioner that can reduce the generation of rotation noise by.
이하, 이러한 본 고안을 첨부한 도면에 실시례를 들어 보다 상세히 설명하면, 다음과 같다.Hereinafter, described in more detail with reference to the accompanying drawings of the present invention, as follows.
제5도 (가)(나)는 본 고안에 의한 공기조화기용 송풍기 팬부의 정면도 및 측면도를 보인 것이고, 제6도 (a)(b)는 공기조화기용 송풍기 팬부 정면도 및 측면도를 보인 것이며, 제7도는 분해 사시도, 제8도 (가)(나)는 부채형 날개의 구성을 보인 것으로, 이하 제5도 내지 제8도를 참조하면, 본 고안에 의한 공기 조화기용 송풍기는 캐비닛(2)에 보강판(5)이 결합되고, 모터(6)가 보강판(5)가 볼트로 체결되며, 모터(6)의 측에 부채형 임펠러(17)가 고정됨과 아울러, 하우징(8)과 하우징 커버(4)가 나사 결합되어 보강판(5)에 지지되고, 하우징 커버(4)에 오리피스(11)가 결합된 구성으로 되어 있다.Figure 5 (a) (b) is a front view and a side view of the blower fan unit for an air conditioner according to the present invention, Figure 6 (a) (b) is a front view and a side view of the blower fan unit for an air conditioner 7 is an exploded perspective view, and FIG. 8 (A) (B) shows the configuration of a fan blade. Referring to FIGS. 5 to 8 below, the air conditioner blower according to the present invention is a cabinet (2). Reinforcement plate (5) is coupled to the motor, the reinforcement plate (5) is bolted to the motor 6, the fan-shaped impeller (17) is fixed to the side of the motor 6, the housing (8) and The housing cover 4 is screwed and supported by the reinforcing plate 5, and the orifice 11 is coupled to the housing cover 4.
또한, 상기 부채형 임펠러(17)는 제6도 (a)(b)에 도시한 바와같이, 주판(15)을 중심으로 양편에 다수의 부채형 날개(18)가 결합되고, 부채형 날개(18)의 내, 외측 주연부를 따라 팬링(12)이 결합되어 있으며, 주판(15)의 중심에는 모터(6)의 축과의 결합을 위하여 보스(16)가 형성되고, 강도 보강을 위해 리브(14)가 형성되어 있다.In addition, the fan-shaped impeller 17, as shown in Figure 6 (a) (b), a plurality of fan blades 18 are coupled to both sides around the main plate 15, fan-shaped blade ( Fan 12 is coupled along the inner and outer circumference of the 18, the boss 16 is formed in the center of the main plate (15) for engagement with the shaft of the motor (6), the rib (for reinforcement) 14) is formed.
상기 부채형 날개(18)는 제8도(가)(나)와 같이, 부판(15) 부착 부분의 날개 폭이 좁고, 팬링(12) 부분측으로 갈수록 폭이 넓어지는 부채꼴 형상을 가진다.The fan-shaped wing 18 has a fan-shaped shape in which the wing width of the attachment portion of the subplate 15 is narrow and wider toward the fan 12 portion, as shown in FIG.
그리고, 상기 부채형 날개(18)를 주판(15)에 장착시 팬링(12)측 부채형 임펠러(17)의 외경이 크고 주판(15)측 외경은 작은 구조로 경사지게 설치하고, 부채형 날개(18)의 내경 부분은 일직선이 되도록 하여 부채형 임펠러(17)의 전체 내경이 동일하도록 하였다.In addition, when the fan blade 18 is mounted on the main plate 15, the fan 12 has a larger outer diameter, and the outer diameter of the main plate 15 is inclined. The inner diameter portion of 18) was in a straight line so that the entire inner diameter of the fan-type impeller 17 was the same.
제9도는 본 고안에 의한 공기조화기용 송풍기의 공기 유동분포도를 가시적으로 보인 것으로, 이하 이를 참조하면, 상기한 바와같은 본 고안은 냉각공기가 부채형 임펠러(17)의 회전에 따라 발생하는 원심력에 의해 흡입되며, 하우징 커버(4)와 하우징(8)의 측면에 부착된 오리피스(11)를 통하여 흡입된 냉각공기는 부채형 이펠러(17)의 양단에 부착된 부채형 날개(18)의 회전에 의해 가압 가속된다. 상기 부채형 임펠러(17)의 회전력은 모터(6)에 의해 얻어지고, 모터(6)의 축방향으로 유입된 공기는 90도 직각으로 회전하여 부채형 날개 (18)를 통해 토출되며, 이 토출 공기는 하우징 커버(4)와 하우징(8)를 통해 모아져서 팬 토출부를 통해 토출된다.9 is a visible view of the air flow distribution of the blower for the air conditioner according to the present invention, with reference to the following, the present invention as described above, the cooling air to the centrifugal force generated by the rotation of the fan-type impeller (17) Sucked by the orifice 11 attached to the side of the housing cover 4 and the housing 8 rotates the fan blade 18 attached to both ends of the fan-shaped impeller 17. Pressurization is accelerated by. The rotational force of the fan-shaped impeller 17 is obtained by the motor 6, and the air introduced in the axial direction of the motor 6 is rotated at a right angle of 90 degrees and discharged through the fan-shaped blade 18, which is discharged. Air is collected through the housing cover 4 and the housing 8 and discharged through the fan discharge.
이러한 과정에서 상기 부채형 임펠러(17)의 부채형 날개(18)가 제8도의 (a)(b)에 도시한 바와 같이 주판(15)측 날개폭(18b)보다 흡입측인 팬링(12)측 날개폭(18a)이 넓은 상태로 형성되어 있으므로 부채형 임펠러(17)의 외경이 주판(15)측보다 양끝단측에서 더 크게 형성되어 동일 회전속도에서 볼 때 주판(15)측의 공기 통과에 따른 원주속도보다 흡입측인 양끝단, 즉 팬링(12)측에서의 원주속도가 크게 되며, 이에 따라 주판(15)측에서의 공기보다 양끝단측에서의 공기에 더 큰 원심력이 가해진다.In this process, the fan-shaped blade 18 of the fan-shaped impeller 17 has a suction side than the blade width 18b of the main plate 15 side as shown in FIG. 8 (a) (b). Since the side wing width 18a is formed in a wide state, the outer diameter of the fan-shaped impeller 17 is formed larger at both ends than the main plate 15 side, so that the air passes through the main plate 15 side at the same rotational speed. The circumferential speed at both ends, that is, the fan ring 12 side, becomes larger than the circumferential speed accordingly, and thus a greater centrifugal force is applied to the air at both end sides than the air at the main plate 15 side.
이에 따라 임펠러(17)로 유입된 공기는 임펠러(17)의 양끝단인 팬링(12)측의 더 큰 원심력에 의해 더 큰 힘을 받으면서 토출된다.Accordingly, the air introduced into the impeller 17 is discharged while receiving more force by the greater centrifugal force on the fan ring 12 side, which is both ends of the impeller 17.
이와 같이 부채형 임펠러(17)의 날개(18) 양끝단에서 발생되는 더 큰 원심력은 재순환 영역의 크기를 축소시키게 되고 날개(18)의 전 영역에 걸쳐서 발생하던 속도불균일을 완화시키게 되는 것이다.As such, the larger centrifugal force generated at both ends of the blade 18 of the fan-shaped impeller 17 reduces the size of the recirculation zone and mitigates the speed unevenness that has occurred over the entire area of the blade 18.
이상에서 설명한 바와같은 본 고안은 종래의 양흡입팬을 장착한 공기조화기용 송풍기에서 열교환기(9) 통과후 S자로 유입된 공기가 임펠러(7)로 흡입시 오리피스(11) 근방에서 재순환 영역을 형성하는 현상 및 주판(15) 근방의 빠른 유속으로 인해 날개(13)의 전체의 유동면적 중 40 내지 60%만이 실제 유동에 이용되는 것이었으나, 본 고안은 주판(15)측 날개 폭에 비하여 팬링(12)의 날개 폭이 큰 부채형 날개(18)를 경사지게 설치하여 팬링(12)의 외경이 주판(15)보다 크게 한 부채형 임펠러(17)를 장착하여 제9도와 같이, 출구 유동의 속도 불균일을 환화하였으며, 오리피스(11) 근방에 대한 되경 증대 및 날개 폭 증대를 하여 큰 운동량을 가할 수 있게 되었다. 속도 균일화를 통해 재순환 영역 발생을 막아 흡입 소음을 저감하고, 특히 주판(15) 부근의 빠른 유속에 따른 하우징(8)과의 간섭에 의한 회전소음의 발생을 감소할 수 있는 이점이 있다.The present invention as described above, the air flowing into the S letter after passing through the heat exchanger (9) in the air conditioner blower equipped with a conventional suction suction fan to the recirculation region near the orifice (11) when inhaled by the impeller (7) Due to the phenomenon of forming and the high flow rate near the main plate 15, only 40 to 60% of the entire flow area of the wing 13 was used for the actual flow, but the present invention is fanning compared to the wing width of the main plate 15 side. A fan-shaped impeller 17 having a larger blade width 18 and a fan blade 12 inclined so that the outer diameter of the fan 12 is larger than the main plate 15 is mounted. The unevenness was circularized, and the momentum was increased and the wing width was increased in the vicinity of the orifice 11, thereby allowing a large momentum to be applied. The speed uniformity prevents the generation of the recirculation area to reduce suction noise, and in particular, the generation of rotational noise due to the interference with the housing 8 due to the high flow rate near the main plate 15 can be reduced.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930029579U KR960009348Y1 (en) | 1993-12-24 | 1993-12-24 | An air blower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019930029579U KR960009348Y1 (en) | 1993-12-24 | 1993-12-24 | An air blower |
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| Publication Number | Publication Date |
|---|---|
| KR950019490U KR950019490U (en) | 1995-07-24 |
| KR960009348Y1 true KR960009348Y1 (en) | 1996-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019930029579U Expired - Lifetime KR960009348Y1 (en) | 1993-12-24 | 1993-12-24 | An air blower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100091002A (en) * | 2009-02-09 | 2010-08-18 | 엘지전자 주식회사 | Turbofan and air conditioner having the same |
-
1993
- 1993-12-24 KR KR2019930029579U patent/KR960009348Y1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100091002A (en) * | 2009-02-09 | 2010-08-18 | 엘지전자 주식회사 | Turbofan and air conditioner having the same |
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| KR950019490U (en) | 1995-07-24 |
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