KR100845289B1 - Centrifugal blower and air conditioner having the same - Google Patents

Centrifugal blower and air conditioner having the same Download PDF

Info

Publication number
KR100845289B1
KR100845289B1 KR1020070027768A KR20070027768A KR100845289B1 KR 100845289 B1 KR100845289 B1 KR 100845289B1 KR 1020070027768 A KR1020070027768 A KR 1020070027768A KR 20070027768 A KR20070027768 A KR 20070027768A KR 100845289 B1 KR100845289 B1 KR 100845289B1
Authority
KR
South Korea
Prior art keywords
cutoff
casing
fan
flow
centrifugal
Prior art date
Application number
KR1020070027768A
Other languages
Korean (ko)
Inventor
김영재
최원석
이재권
김진백
Original Assignee
삼성전자주식회사
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 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1020070027768A priority Critical patent/KR100845289B1/en
Priority to CNA2007101391981A priority patent/CN101270763A/en
Application granted granted Critical
Publication of KR100845289B1 publication Critical patent/KR100845289B1/en

Links

Images

Classifications

    • 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
    • F04D29/403—Casings; Connections of working fluid 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
    • F04D29/002—Details, component parts, or accessories 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/12—Kind or type gaseous, i.e. compressible
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Abstract

A centrifugal blower and an air conditioner having the same are provided to reduce blowing noise by controlling a cutoff position easily. A centrifugal blower comprises a fan casing(31), a centrifugal fan(40) and a cutoff control unit(60). The fan casing is equipped with inlets and an outlet, has a scroll type expansion pattern for expanding an internal flow path gradually toward the outlet, and is provided with a cutoff unit(35) for flow branching. The centrifugal fan is installed inside the fan casing. The cutoff control unit is arranged on the downstream side of the cutoff unit, protruding on the inner surface of the fan casing near the cutoff unit, and forms a flow branching point.

Description

원심송풍기 및 이를 갖춘 공기조화기{CENTRIFUGAL BLOWER AND AIR CONDITIONER HAVING THE SAME}Centrifugal blower and air conditioner with same {CENTRIFUGAL BLOWER AND AIR CONDITIONER HAVING THE SAME}

도 1은 본 발명에 따른 원심송풍기가 적용된 공기조화기를 나타낸 단면도이다.1 is a cross-sectional view showing an air conditioner to which a centrifugal blower according to the present invention is applied.

도 2는 도 1의 Ⅱ-Ⅱ'선에 따른 단면도이다.FIG. 2 is a cross-sectional view taken along line II-II 'of FIG. 1.

도 3은 도 2의 A부 상세도이다.3 is a detailed view of portion A of FIG. 2.

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

10: 본체, 11: 열교환기,10: main body, 11: heat exchanger,

30: 송풍장치, 31: 케이싱,30: blower, 31: casing,

32: 제1입구, 33: 제2입구,32: first entrance, 33: second entrance,

35: 컷오프부, 40: 원심팬,35: cut-off part, 40: centrifugal fan,

50: 구동모터, 60: 컷오프조정부.50: drive motor, 60: cutoff adjustment unit.

본 발명은 원심송풍기 및 이를 갖춘 공기조화기에 관한 것으로, 더욱 상세하게는 케이싱의 컷오프부 위치를 조정하여 소음을 저감시킬 수 있는 원심송풍기 및 이를 갖춘 공기조화기에 관한 것이다.The present invention relates to a centrifugal blower and an air conditioner having the same, and more particularly, to a centrifugal blower and an air conditioner having the same that can reduce noise by adjusting the position of the cutoff portion of the casing.

대한민국 공개특허공보 1999-70161호에 개시된 바와 같은 원심송풍기는 원심팬과, 송풍안내를 위해 원심팬의 외측에 설치된 팬케이싱을 구비한다. The centrifugal blower as disclosed in Korean Laid-Open Patent Publication No. 1999-70161 includes a centrifugal fan and a fan casing installed on the outside of the centrifugal fan for blowing guide.

팬케이싱은 원심팬의 중심부분으로 공기가 유입되는 입구와, 원심팬에 의해 송풍되는 공기가 배출될 수 있도록 입구와 교차하는 방향에 마련된 출구를 갖추고 있다. 또 팬케이싱은 공기의 이동방향으로 갈수록 내부의 공기유로면적이 점차 확대되는 스크롤형 확산패턴을 구비하며, 확산패턴의 가장 상류부분에 출구와 경계를 이루어 유동이 분기되도록 하는 컷오프부를 구비한다. The fan casing has an inlet through which air flows into the central part of the centrifugal fan, and an outlet provided in a direction crossing the inlet so that air blown by the centrifugal fan can be discharged. In addition, the pan casing has a scroll type diffusion pattern in which the area of the air flow path is gradually enlarged toward the air moving direction, and a cutoff part is formed at the most upstream part of the diffusion pattern so as to branch the flow at the boundary with the outlet.

이러한 원심송풍기는 컷오프부와 원심팬의 간격이 작으면 송풍량이 증가하기는 하지만 압력장으로 인해 소음이 높아진다. 반면 컷오프부와 원심팬의 간격이 너무 크면 컷오프부 근처에서 와류가 생기고 송풍량이 적어진다. 따라서 이러한 원심송풍기는 컷오프부와 원심팬 사이의 간격을 적절히 유지하는 것이 중요하다.Such a centrifugal blower has a small air gap between the cutoff part and the centrifugal fan, but increases the air volume, but increases the noise due to the pressure field. On the other hand, if the distance between the cutoff part and the centrifugal fan is too large, vortices will be generated near the cutoff part and the airflow amount will be reduced. Therefore, it is important that such a centrifugal blower properly maintain the gap between the cutoff portion and the centrifugal fan.

원심송풍기의 팬케이싱은 통상적인 사출성형방식이나 철판의 성형 등을 통하여 제조한다. 그런데 원심송풍기를 제조하는 과정에서 팬케이싱의 컷오프부와 원심팬의 간격이 적절하지 않아 소음이 생길 경우에는 팬케이싱을 다시 제조해야 했기 때문에 많은 비용과 시간이 소모되는 문제가 있었다. 특히 팬케이싱을 사출방식으로 제조하는 경우에는 팬케이싱의 제조를 위한 금형을 다시 설계하여 제조해야 했다.The fan casing of the centrifugal blower is manufactured through a conventional injection molding method or the molding of an iron plate. However, in the manufacturing process of the centrifugal blower, when the cutoff portion of the fan casing and the centrifugal fan are not appropriately spaced, noise is generated, so there is a problem of costly and time consuming. In particular, in the case of manufacturing the pan casing by injection method, it was necessary to redesign the mold for manufacturing the pan casing.

본 발명은 이와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 컷 오프 위치를 쉽게 조정할 수 있도록 하여 송풍소음을 줄일 수 있도록 하는 원심송풍기 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 centrifugal blower and an air conditioner having the same to reduce the blowing noise by easily adjusting the cut-off position.

이러한 목적을 달성하기 위한 본 발명에 따른 원심송풍기는 흡입구와 토출구를 구비하고 토출구로 갈수록 내부유로가 점차 확산되는 스크롤형 확산패턴를 가지며 유동의 분기를 위한 컷오프부가 마련된 팬케이싱과, 상기 팬케이싱 내에 설치되는 원심팬과, 상기 컷오프부 하류 쪽에 마련되며 상기 컷오프부 근처의 상기 팬케이싱 내면으로부터 돌출하여 유동분기점을 형성하는 컷오프조정부를 구비하며, 상기 컷오프조정부의 선단은 컷오프의 조정을 위해 상기 컷오프부의 외곽 위치로부터 상기 팬케이싱의 확산패턴과 평행하게 연장되는 선과 일치하도록 된 것을 특징으로 한다.The centrifugal blower according to the present invention for achieving this object has a fan-type casing having a suction port and a discharge port, and has a scroll-type diffusion pattern in which the internal flow path gradually spreads toward the discharge port and provided with a cut-off section for branching of the flow, and installed in the fan casing. And a cutoff adjusting portion provided downstream of the cutoff portion and protruding from an inner surface of the pan casing near the cutoff portion to form a flow divergence point, wherein a front end of the cutoff adjusting portion is an outer portion of the cutoff portion for adjusting a cutoff. And a line extending from the position in parallel with the diffusion pattern of the pan casing.

또한 상기 컷오프조정부는 상기 팬케이싱 내면으로부터 공기의 유동방향과 교차하는 방향으로 돌출하는 것을 특징으로 한다.In addition, the cut-off adjusting unit is characterized in that protruding from the inner surface of the fan casing in a direction intersecting the flow direction of air.

삭제delete

또한 본 발명에 따른 공기조화기는 본체 내에 설치된 열교환기와, 상기 열교환기를 통과하도록 공기를 송풍하기 위해 상기 본체 내에 설치된 원심송풍기를 포함하고, 상기 원심송풍기는 흡입구와 토출구를 구비하고 토출구로 갈수록 내부유로가 점차 확산되는 스크롤형 확산패턴를 가지며 유동의 분기를 위한 컷오프부가 마련된 팬케이싱과, 상기 팬케이싱 내에 설치되는 원심팬과, 상기 컷오프부 하류 쪽에 마련되며 상기 컷오프부 근처의 상기 팬케이싱 내면으로부터 돌출하여 유동분기점을 형성하는 컷오프조정부를 구비하며, 상기 컷오프조정부의 선단은 컷오프의 조정을 위해 상기 컷오프부의 외곽 위치로부터 상기 팬케이싱의 확산패턴과 평행하게 연장되는 선과 일치하도록 된 것을 특징으로 한다.In addition, the air conditioner according to the present invention includes a heat exchanger installed in the main body, and a centrifugal blower installed in the main body to blow air through the heat exchanger, the centrifugal blower is provided with an inlet and a discharge port, the internal flow path toward the discharge port A fan casing having a scroll diffusion pattern gradually spreading therein and a cut-off portion for branching of the flow, a centrifugal fan provided in the pan casing, and a downstream side of the cut-off portion and protruding from the inner surface of the pan casing near the cut-off portion and flowing. And a cutoff adjustment unit forming a branch point, wherein the tip of the cutoff adjustment unit is aligned with a line extending in parallel with the diffusion pattern of the pan casing from an outer position of the cutoff unit for adjustment of the cutoff.

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.

본 발명이 적용된 공기조화기는 도 1에 도시한 바와 같이, 본체(10)의 내측 상부에 설치된 열교환기(11)와, 본체(10)의 내측 하부에 설치된 원심송풍기(30)를 구비한다. As shown in FIG. 1, the air conditioner to which the present invention is applied includes a heat exchanger 11 installed at an inner upper portion of the main body 10, and a centrifugal blower 30 provided at an inner lower portion of the main body 10.

본체(10)는 실내공기의 흡입을 위해 하측 후면 또는 양 측면에 형성된 흡입구(12)와, 상부 양측에 각각 형성된 측면토출구(13), 그리고 전면 중앙부에 형성된 전면토출구(14)를 구비한다. 본체(10)의 전면 상부에는 전면토출구(14)를 개폐하기 위한 상부도어(15)가 설치된다. 상부도어(15)는 본체(10)에 형성된 레일(미도시)을 따라 승강하도록 설치되며, 상부도어(15)의 배면 쪽에는 상부도어(15)를 승강시키는 승강장치(16)가 설치된다.The main body 10 includes a suction port 12 formed at the lower rear side or both sides for suction of indoor air, side discharge ports 13 formed at both upper sides, and a front discharge port 14 formed at the front center. The upper door 15 for opening and closing the front discharge port 14 is installed on the front upper portion of the main body 10. The upper door 15 is installed to elevate along a rail (not shown) formed in the main body 10, and a lifting device 16 for elevating the upper door 15 is installed at the rear side of the upper door 15.

본체(10) 내부의 열교환기(11)는 원심송풍기(30)로부터 상부로 송풍되는 공기가 통과하면서 열교환될 수 있도록 평판형으로 마련되고, 본체(10)의 내측 상부공간을 구획하는 형태로 경사지게 설치된다. The heat exchanger 11 inside the main body 10 is provided in a flat shape so that the air blown upwards from the centrifugal blower 30 passes through and is inclined in a manner of partitioning the inner upper space of the main body 10. Is installed.

원심송풍기(30)는 도 1과 도 2에 도시한 바와 같이, 팬케이싱(31)과, 팬케이싱(31) 내부에 설치된 원심팬(40), 그리고 원심팬(40)을 구동하는 구동모터(50)를 포함한다. 구동모터(50)는 본체(10)의 내측 후면부에 고정되고, 원심팬(40)은 구동모터(50)로부터 팬케이싱(31) 내부로 연장된 회전축(51)에 결합된다.As shown in FIGS. 1 and 2, the centrifugal blower 30 includes a fan casing 31, a centrifugal fan 40 installed inside the fan casing 31, and a drive motor for driving the centrifugal fan 40. 50). The drive motor 50 is fixed to the inner rear portion of the main body 10, the centrifugal fan 40 is coupled to the rotating shaft 51 extending from the drive motor 50 into the fan casing 31.

팬케이싱(31)은 공기의 흡입을 위해 전면과 후면에 각각 형성된 제1입구(32) 와 제2입구(33)를 구비하고, 공기의 배출을 위해 상부에 형성된 출구(34)를 구비한다. 이는 원심팬의 동작에 의해 제1 및 제2입구를 통해 팬케이싱(31) 내부로 흡입된 공기가 상부의 출구(34)로 배출될 수 있도록 한 것이다. The fan casing 31 has a first inlet 32 and a second inlet 33 respectively formed on the front and rear surfaces for the intake of air, and an outlet 34 formed on the upper side for the discharge of air. This allows the air sucked into the fan casing 31 through the first and second inlets to be discharged to the upper outlet 34 by the operation of the centrifugal fan.

팬케이싱(31)은 도 2에 도시한 바와 같이, 출구(34) 쪽으로 갈수록 내부의 유로(34)가 점차 확산되는 스크롤형 확산패턴을 구비한다. 공기의 이동방향으로 갈수록 내부의 유로면적이 점차 확대되도록 한 것이다. 또 팬케이싱(31)은 확산패턴의 가장 상류부분에 출구(34) 쪽과 경계를 이루어 공기 유동이 분기되도록 하는 컷오프부(35)를 구비한다. 컷오프부(35)는 원심팬(40)의 외주부와 가장 근접한다.As illustrated in FIG. 2, the pan casing 31 includes a scroll diffusion pattern in which an inner flow path 34 gradually diffuses toward the exit 34. As the air moves in the direction of movement, the inner passage area is gradually enlarged. In addition, the pan casing 31 has a cutoff portion 35 at the most upstream portion of the diffusion pattern, which borders the outlet 34 side to branch the air flow. The cutoff part 35 is closest to the outer peripheral part of the centrifugal fan 40.

원심팬(40)은 도 1에 도시한 바와 같이, 팬케이싱(31)의 전면과 후면의 제1 및 제2입구(32,33), 즉 양방향으로부터 공기를 흡입할 수 있는 팬이다. 이 원심팬(40)은 회전축(51)에 결합된 회전판(41), 회전판(41)의 외주부 전면에 고정된 다수의 제1날개(42)와, 회전판(41) 외주부 후면에 고정된 다수의 제2날개(43)를 포함한다. 제1 및 제2날개(42,43)는 회전축(51)을 중심으로 환형으로 배치된다. 또 제1날개(42) 단부는 제1슈라우드(44)에 의해 연결되고, 제2날개(43) 단부는 제2슈라우드(45)에 의해 연결된다. 원심팬(40)은 통상의 터보팬이거나 다익형 시로코팬일 수 있다.As shown in FIG. 1, the centrifugal fan 40 is a fan capable of sucking air from the first and second inlets 32 and 33 of the front and rear surfaces of the fan casing 31. The centrifugal fan 40 includes a rotating plate 41 coupled to the rotating shaft 51, a plurality of first blades 42 fixed to the front of the outer circumferential part of the rotating plate 41, and a plurality of fixed plates fixed to the rear of the outer circumferential part of the rotating plate 41. The second wing 43 is included. The first and second blades 42 and 43 are annularly disposed about the rotation shaft 51. In addition, the end of the first wing 42 is connected by the first shroud 44, the end of the second wing 43 is connected by the second shroud (45). The centrifugal fan 40 may be a conventional turbofan or a multi-wing sirocco fan.

이러한 원심송풍기(30)는 구동모터(50)의 동작에 의해 원심팬(40)이 회전하면, 도 2에 도시한 바와 같이, 양측의 제1 및 제2입구(32,33)로부터 공기를 흡입하여 상부의 출구(34)로 송풍할 수 있다. 이때 팬케이싱(31) 내부의 공기는 도 2에 도시한 바와 같이, 스크롤형으로 확산되는 내부 유로(34)를 따라 출구(34)로 안내 된다. The centrifugal blower 30 sucks air from the first and second inlets 32 and 33 on both sides, as shown in FIG. 2 when the centrifugal fan 40 rotates by the operation of the drive motor 50. It can be blown to the outlet 34 of the upper portion. At this time, the air inside the fan casing 31 is guided to the outlet 34 along the inner flow passage 34 which is spread in a scroll type, as shown in FIG.

한편, 이러한 원심송풍기(30)는 컷오프부(35)와 원심팬(40)의 간격(t)이 작으면 송풍량이 증가하기는 하지만 압력장으로 인해 유동소음이 커지고, 컷오프부(35)와 원심팬(40)의 간격(t)이 너무 크면 컷오프부(35) 근처에서 와류가 생기고 송풍량이 적어진다. 따라서 컷오프부(35)와 원심팬(40) 사이의 간격(t)을 적절히 유지하는 것이 중요한데, 본 발명은 팬케이싱(31)의 형태를 변경하지 않고서도 팬케이싱(31) 내부의 유동패턴을 변경시켜 컷오프부(35) 근처에서 유동소음이 생기는 현상을 최소화할 수 있는 컷오프조정부(60)를 구비한다.On the other hand, such a centrifugal blower 30, if the distance (t) between the cutoff portion 35 and the centrifugal fan 40 is small, but the blowing amount is increased, the flow noise is increased due to the pressure field, the cutoff portion 35 and the centrifugal If the spacing t of the fan 40 is too large, vortices will be generated near the cutoff portion 35 and the air blowing amount will be small. Therefore, it is important to properly maintain the distance t between the cutoff part 35 and the centrifugal fan 40. The present invention provides a flow pattern inside the fan casing 31 without changing the shape of the fan casing 31. It is provided with a cut-off adjustment unit 60 that can be changed to minimize the phenomenon that the flow noise occurs near the cut-off unit 35.

컷오프조정부(60)는 도 2와 도 3에 도시한 바와 같이, 컷오프부(35)의 하류 쪽에서 새로운 유동분기점을 형성한다. 컷오프조정부(60)는 도 3에 도시한 바와 같이, 컷오프부(35) 상측의 팬케이싱(31) 내면으로부터 팬케이싱(31) 내측 방향으로 돌출하는 평판형태이다. 그리고 그 방향은 출구(34) 쪽으로 배출되는 공기의 유동방향과 교차한다.The cutoff adjustment unit 60 forms a new flow branch on the downstream side of the cutoff unit 35, as shown in Figs. As shown in FIG. 3, the cutoff adjustment unit 60 protrudes from the inner surface of the fan casing 31 on the upper side of the cutoff unit 35 toward the inside of the fan casing 31. And the direction crosses the flow direction of air discharged toward the outlet 34.

컷오프조정부(60)의 선단(61)은 컷오프부(35)의 외곽에 설정한 가상 컷오프지점(36, 컷오프부 위치를 변경하고 싶은 지점)으로부터 팬케이싱(31)의 확산패턴과 평행하게 연장되는 선(37)과 일치하도록 한다. 이는 컷오프부(35)와 원심팬(40) 사이의 간격(t)이 너무 작아서 유동소음이 생길 경우 컷오프조정부(60)를 설치함으로써 컷오프조정부(60)의 선단(61)에서 실질적인 유동의 분기가 생기도록 하고, 이를 통해 유동소음을 줄일 수 있도록 한 것이다. 즉 컷오프조정부(60)의 선단(61)이 실질적인 컷오프부의 역할을 하도록 함으로써 유동소음을 줄일 수 있도록 한 것이 다. 컷오프조정부(60)가 팬케이싱 내부의 유동패턴을 변경시켜 유동소음을 저감시키도록 한 것이다.The tip 61 of the cutoff adjusting part 60 extends in parallel with the diffusion pattern of the pan casing 31 from the virtual cutoff point 36 set at the outer side of the cutoff part 35 (a point where the position of the cutoff part is to be changed). Coincide with line 37. This is because when the distance t between the cutoff part 35 and the centrifugal fan 40 is too small and flow noise is generated, the branch of the substantial flow is formed at the tip 61 of the cutoff adjustment part 60 by installing the cutoff adjustment part 60. To reduce flow noise. That is, the front end 61 of the cutoff adjustment unit 60 serves to substantially reduce the flow noise by acting as a cutoff portion. The cutoff adjusting unit 60 changes the flow pattern inside the pan casing to reduce the flow noise.

실제로 이러한 컷오프조정부(60)를 설치하면, 팬케이싱(31) 내부를 유동하는 공기는 대부분 컷오프조정부(60)의 선단(61)에 의해 분기되어 출구(34) 쪽으로 유동한다. 물론 도 3에 도시한 바와 같이 일부 공기(B)는 컷오프부(35) 쪽으로 유동하기도 하지만 이는 소음증가에 별다른 영향을 주지 않는다. In fact, when such a cutoff adjustment unit 60 is provided, most of the air flowing inside the fan casing 31 is branched by the tip 61 of the cutoff adjustment unit 60 and flows toward the outlet 34. Of course, as shown in FIG. 3, some air B may also flow toward the cutoff part 35, but this does not affect noise increase.

컷오프조정부(60)는 팬케이싱(31)의 제조가 완료된 상태에서 컷오프를 조정하여 유동소음을 줄이고자 할 때 팬케이싱(31) 내에 설치할 수 있다. 즉 팬케이싱(31) 내부의 유동패턴을 변경시켜 소음을 줄이고자 하는 경우에 설치한다. 이러한 컷오프조정부(60)는 팬케이싱(31) 내면에 접착제를 이용하여 부착하거나 고정나사를 체결하여 고정할 수 있다. 또 팬케이싱(31)을 사출성형을 통하여 제조하는 경우라면 컷오프조정부(60)를 위해 금형 일부를 수정함으로써 컷오프조정부(60)가 팬케이싱(31)과 일체로 성형되도록 할 수도 있다. The cut-off adjusting unit 60 may be installed in the pan casing 31 when the manufacturing of the pan casing 31 is completed to reduce the flow noise by adjusting the cutoff. In other words, it is installed in the case of reducing the noise by changing the flow pattern inside the fan casing (31). The cutoff adjustment unit 60 may be attached to the inner surface of the pan casing 31 using an adhesive or may be fixed by fastening a fixing screw. In addition, in the case of manufacturing the pan casing 31 through injection molding, the cutoff adjusting part 60 may be integrally formed with the pan casing 31 by modifying a part of the mold for the cutoff adjusting part 60.

이처럼 본 발명은 컷오프조정부(60)가 팬케이싱(31) 내부의 유동패턴을 변경시킬 수 있고, 이를 통해 유동소음을 줄일 수 있기 때문에 컷오프부(35)와 원심팬(40) 사이의 간격이 잘못 설정된 경우도 컷오프 위치를 손쉽게 보정할 수 있다.As such, the present invention may change the flow pattern inside the fan casing 31 by the cutoff adjustment unit 60, thereby reducing the flow noise. Thus, the gap between the cutoff unit 35 and the centrifugal fan 40 is incorrect. Even when set, the cutoff position can be easily corrected.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 원심송풍기는 팬케이싱 내에 설치되는 컷오프조정부를 통해 팬케이싱 내부 컷오프부 근처의 유동패턴을 조정할 수 있기 때문에 이상 소음 및 송풍소음을 저감시킬 수 있는 효과가 있다.As described above in detail, since the centrifugal blower according to the present invention can adjust the flow pattern near the cutoff portion inside the fan casing through the cutoff adjusting portion installed in the fan casing, the abnormal noise and the blowing noise can be reduced. .

또한 본 발명은 팬케이싱 제조 후에 팬케이싱 내에 컷오프조정부를 설치하는 것으로 실질적인 컷오프부의 위치를 조정할 수 있기 때문에 컷오프부와 원심팬 사이의 간격이 잘못 설정된 팬케이싱도 컷오프 위치를 손쉽게 보정할 수 있는 효과가 있다.In addition, since the present invention can adjust the position of the actual cutoff part by installing a cutoff adjusting part in the pan casing after manufacturing the pan casing, the pan casing in which the gap between the cutoff part and the centrifugal fan is set incorrectly can easily correct the cutoff position. have.

Claims (6)

입구와 출구를 구비하고 출구로 갈수록 내부유로가 점차 확산되는 스크롤형 확산패턴를 가지며 유동의 분기를 위한 컷오프부가 마련된 팬케이싱과, 상기 팬케이싱 내에 설치되는 원심팬을 포함하는 원심송풍기에 있어서,In a centrifugal blower comprising an inlet and an outlet, a fan casing having a scroll diffusion pattern in which an inner flow passage gradually spreads toward an outlet, and a cut-off unit for branching of a flow, and a centrifugal fan installed in the fan casing. 상기 컷오프부의 하류 쪽에 마련되며 상기 컷오프부 근처의 상기 팬케이싱의 내면으로부터 돌출하여 유동 분기점을 형성하는 컷오프조정부를 구비하며,A cutoff adjusting portion provided downstream of the cutoff portion and protruding from an inner surface of the pan casing near the cutoff portion to form a flow branch; 상기 컷오프조정부의 선단은 컷오프의 조정을 위해 상기 컷오프부의 외곽 위치로부터 상기 팬케이싱의 확산패턴과 평행하게 연장되는 선과 일치하도록 된 것을 특징으로 하는 원심송풍기.And the front end of the cutoff adjustment part is coincident with a line extending in parallel with the diffusion pattern of the pan casing from an outer position of the cutoff part to adjust the cutoff. 제1항에 있어서,The method of claim 1, 상기 컷오프조정부는 상기 팬케이싱의 내면으로부터 공기의 유동방향과 교차하는 방향으로 돌출하는 것을 특징으로 하는 원심송풍기.And the cutoff adjusting part protrudes from an inner surface of the fan casing in a direction intersecting with a flow direction of air. 삭제delete 본체와, 상기 본체 내에 설치된 열교환기와, 상기 열교환기를 통과하도록 공기를 송풍하기 위해 상기 본체 내에 설치된 원심송풍기를 포함하고,A main body, a heat exchanger installed in the main body, and a centrifugal blower provided in the main body to blow air through the heat exchanger, 상기 원심송풍기는 입구와 출구를 구비하고 출구로 갈수록 내부유로가 점차 확산되는 스크롤형 확산패턴를 가지며 유동의 분기를 위한 컷오프부가 마련된 팬케이싱과, 상기 팬케이싱 내에 설치되는 원심팬과, 상기 컷오프부의 하류 쪽에 마련되며 상기 컷오프부 근처의 상기 팬케이싱의 내면으로부터 돌출하여 유동 분기점을 형성하는 컷오프조정부를 구비하며,The centrifugal blower has an inlet and an outlet, and has a scroll type diffusion pattern in which an internal flow path gradually spreads toward the outlet, a fan casing provided with a cut-off section for branching of the flow, a centrifugal fan installed in the fan casing, and a downstream of the cut-off section. A cutoff adjusting portion provided at a side thereof and protruding from an inner surface of the pan casing near the cutoff portion to form a flow branch point; 상기 컷오프조정부의 선단은 컷오프의 조정을 위해 상기 컷오프부의 외곽 위치로부터 상기 팬케이싱의 확산패턴과 평행하게 연장되는 선과 일치하도록 된 것을 특징으로 공기조화기.And the front end of the cutoff adjustment part is coincident with a line extending in parallel with the diffusion pattern of the pan casing from an outer position of the cutoff part to adjust the cutoff. 제4항에 있어서,The method of claim 4, wherein 상기 컷오프조정부는 상기 팬케이싱 내면으로부터 공기의 유동방향과 교차하는 방향으로 돌출하는 것을 특징으로 하는 공기조화기.And the cutoff adjuster protrudes from an inner surface of the pan casing in a direction intersecting with a flow direction of air. 삭제delete
KR1020070027768A 2007-03-21 2007-03-21 Centrifugal blower and air conditioner having the same KR100845289B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020070027768A KR100845289B1 (en) 2007-03-21 2007-03-21 Centrifugal blower and air conditioner having the same
CNA2007101391981A CN101270763A (en) 2007-03-21 2007-07-27 Centrifugal blower and air conditioner having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070027768A KR100845289B1 (en) 2007-03-21 2007-03-21 Centrifugal blower and air conditioner having the same

Publications (1)

Publication Number Publication Date
KR100845289B1 true KR100845289B1 (en) 2008-07-09

Family

ID=39824222

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070027768A KR100845289B1 (en) 2007-03-21 2007-03-21 Centrifugal blower and air conditioner having the same

Country Status (2)

Country Link
KR (1) KR100845289B1 (en)
CN (1) CN101270763A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3059449A1 (en) * 2015-02-16 2016-08-24 Samsung Electronics Co., Ltd. Scroll for air conditioner and air conditioner having the same
KR102280634B1 (en) * 2020-04-21 2021-07-22 주식회사 힘펠 Discharge Structure of Centrifugal fan
US11131320B2 (en) 2019-04-04 2021-09-28 Johnson Controls Technology Company Modular cutoff for a blower housing
CN115076136A (en) * 2022-07-13 2022-09-20 深圳市史迪安电子科技有限公司 Fan capable of blowing air to 360-degree direction simultaneously
US11493056B2 (en) 2019-12-23 2022-11-08 Johnson Controls Tyco IP Holdings LLP Blower housing for blower of HVAC system
US12025152B2 (en) 2023-07-31 2024-07-02 Tyco Fire & Security Gmbh Blower housing for blower of HVAC system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021043688A1 (en) * 2019-09-04 2021-03-11 Koninklijke Philips N.V. A face mask
JP7446469B2 (en) * 2020-10-23 2024-03-08 三菱電機株式会社 multi-blade centrifugal blower

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122394A (en) 1982-01-14 1983-07-21 Kubota Ltd Volute pump
JPS62258197A (en) 1986-05-06 1987-11-10 Matsushita Seiko Co Ltd Centrifugal blower
JPH062699A (en) * 1992-06-18 1994-01-11 Takuma Co Ltd Low noise type blower
JPH07151059A (en) * 1993-08-02 1995-06-13 Foster Wheeler Energy Corp Rotary throat cutoff device and reducing method of centrifugal fan noise
JP2001524179A (en) 1997-05-02 2001-11-27 アメリカン・スタンダード・インターナショナル・インコーポレイテッド Cut-off member for cross flow fan
KR20040048955A (en) * 2004-04-14 2004-06-10 엘지전자 주식회사 Indoor unit of packaged air conditioner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122394A (en) 1982-01-14 1983-07-21 Kubota Ltd Volute pump
JPS62258197A (en) 1986-05-06 1987-11-10 Matsushita Seiko Co Ltd Centrifugal blower
JPH062699A (en) * 1992-06-18 1994-01-11 Takuma Co Ltd Low noise type blower
JPH07151059A (en) * 1993-08-02 1995-06-13 Foster Wheeler Energy Corp Rotary throat cutoff device and reducing method of centrifugal fan noise
JP2001524179A (en) 1997-05-02 2001-11-27 アメリカン・スタンダード・インターナショナル・インコーポレイテッド Cut-off member for cross flow fan
KR20040048955A (en) * 2004-04-14 2004-06-10 엘지전자 주식회사 Indoor unit of packaged air conditioner

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3059449A1 (en) * 2015-02-16 2016-08-24 Samsung Electronics Co., Ltd. Scroll for air conditioner and air conditioner having the same
US10302096B2 (en) 2015-02-16 2019-05-28 Samsung Electronics Co., Ltd. Scroll for air conditioner and air conditioner having the same
US11131320B2 (en) 2019-04-04 2021-09-28 Johnson Controls Technology Company Modular cutoff for a blower housing
US11493056B2 (en) 2019-12-23 2022-11-08 Johnson Controls Tyco IP Holdings LLP Blower housing for blower of HVAC system
US11713771B2 (en) 2019-12-23 2023-08-01 Johnson Controls Tyco IP Holdings LLP Blower housing for blower of HVAC system
KR102280634B1 (en) * 2020-04-21 2021-07-22 주식회사 힘펠 Discharge Structure of Centrifugal fan
CN115076136A (en) * 2022-07-13 2022-09-20 深圳市史迪安电子科技有限公司 Fan capable of blowing air to 360-degree direction simultaneously
CN115076136B (en) * 2022-07-13 2023-04-18 深圳市史迪安电子科技有限公司 Fan capable of blowing air to 360-degree direction simultaneously
US12025152B2 (en) 2023-07-31 2024-07-02 Tyco Fire & Security Gmbh Blower housing for blower of HVAC system

Also Published As

Publication number Publication date
CN101270763A (en) 2008-09-24

Similar Documents

Publication Publication Date Title
KR100845289B1 (en) Centrifugal blower and air conditioner having the same
WO2014069301A1 (en) Air conditioner
KR20120061512A (en) Brower for air conditioner
KR20080042398A (en) A ceiling type air conditioner
KR101285176B1 (en) Air conditioner
JP2012251676A (en) Indoor unit for air conditioner
KR20140115192A (en) Circular Fan and Air Conditioner Having the Same
CN111750436B (en) Ceiling embedded air conditioner
JP6264347B2 (en) Air conditioning indoor unit
KR100787501B1 (en) A ceiling type air conditioner
JP3082453B2 (en) Air conditioner
KR101362320B1 (en) Ceiling type air conditioner
CN104949198A (en) Air conditioner
JP2019196866A (en) Indoor unit of air conditioner
JP5574841B2 (en) Turbofan and air conditioner using the same
JP5083349B2 (en) Air conditioner indoor unit
KR20080101475A (en) Air conditioner
KR20110071615A (en) Air conditioner
KR102370822B1 (en) turbo fan for ceiling type air conditioner and ceiling type air conditioner having the same
KR200444803Y1 (en) Styrofoam fan case improved in noise-reduction and vantilation
KR100874227B1 (en) Air Conditioning Euro Guide Device
JPWO2018163574A1 (en) Air conditioner
WO2021082316A1 (en) Air duct component for air conditioner, and air conditioner having same
JP2004278386A (en) Turbo type fluid machine
JPH07293498A (en) Multiblade fan

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130627

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20140627

Year of fee payment: 7

FPAY Annual fee payment

Payment date: 20150629

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20160629

Year of fee payment: 9

FPAY Annual fee payment

Payment date: 20170629

Year of fee payment: 10

FPAY Annual fee payment

Payment date: 20180628

Year of fee payment: 11

FPAY Annual fee payment

Payment date: 20190627

Year of fee payment: 12