KR970003052Y1 - Fan of a vacuum cleaner - Google Patents
Fan of a vacuum cleaner Download PDFInfo
- Publication number
- KR970003052Y1 KR970003052Y1 KR92018049U KR920018049U KR970003052Y1 KR 970003052 Y1 KR970003052 Y1 KR 970003052Y1 KR 92018049 U KR92018049 U KR 92018049U KR 920018049 U KR920018049 U KR 920018049U KR 970003052 Y1 KR970003052 Y1 KR 970003052Y1
- Authority
- KR
- South Korea
- Prior art keywords
- fan
- blade
- vacuum cleaner
- centrifugal fan
- present
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/22—Mountings for motor fan assemblies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
내용없음.None.
Description
제1도는 종래 원심팬의 구성도.1 is a block diagram of a conventional centrifugal fan.
제2a, b도는 종래 원심팬의 상판과 하판 평면도.2a, b is a plan view of the top and bottom plate of the conventional centrifugal fan.
제3도는 종래 원심팬의 블레이드 측면도.3 is a side view of the blade of the conventional centrifugal fan.
제4a, b도는 본 고안에 의한 원심팬의 상,하판 평면도.4a, b is a plan view of the upper and lower plates of the centrifugal fan according to the present invention.
제5도는 본 고안에 의한 원심팬의 블레이드 측면도.5 is a side view of the blade of the centrifugal fan according to the present invention.
제6도는 본 고안에 의한 원심팬의 조립도.6 is an assembly diagram of the centrifugal fan according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 상판 2 : 하판1: top plate 2: bottom plate
3 : 블레이드 4 : 엠보싱 돌기3: blade 4: embossing projection
본 고안은 진공청소기용 원심팬의 파손방지장치에 관한 것으로, 특히 고전회전시 팬의 파손을 방지할 수 있도록한 진공청소기용 원심팬의 파손방지장치에 관한 것이다.The present invention relates to a damage preventing device for a vacuum cleaner centrifugal fan, and more particularly, to a damage preventing device for a vacuum cleaner centrifugal fan that can prevent damage to the fan during high rotation.
종래의 진공청소기용 원심팬은 제1도 내지 제3도에 도시한 바와같이, 상판(1)과, 하판(2) 및 블레이드(3)로 구성되어 있고, 상판(1)과 하판(2)에 형성한 구멍(1a)(2a)에 블레이드(3)의 코킹부(3a)를 코킹하여 결합한 구조로 되어 있다.The conventional vacuum centrifugal fan is composed of an upper plate 1, a lower plate 2 and a blade 3, as shown in Figures 1 to 3, the upper plate 1 and the lower plate 2 The caulking portion 3a of the blade 3 is caulked and joined to the holes 1a and 2a formed in the groove.
이러한 종래의 진공청소기용 원심팬은 회전시 팬 자체의 원심력 F1과 블레이드(3) 사이의 공기의 회전에 의한 원심력 F2가 작용하고, 이 힘에 의해 흡입력이 발생하게 되며, 두 힘 F1, F2이 블레이드(3)에 작용하게 된다.In the conventional vacuum cleaner centrifugal fan, the centrifugal force F1 of the fan itself and the centrifugal force F2 due to the rotation of the air between the blades 3 act upon the rotation, and the suction force is generated by this force, and the two forces F1 and F2 are Act on the blade (3).
그리고, 상기 두 힘 F1, F2를 수식으로 나타내면 다음과 같다.In addition, the two forces F1 and F2 are expressed as follows.
F1=rω2dmF1 = rω2dm
F2-ω2/Rbdm-2ωwdmF2-ω2 / Rbdm-2ωwdm
여기서, r : 팬의 반지름, ω : 팬의 회전속도, Rb : 블레이드의 곡률반경, w : 공기의 상대속도, dm : 공기의 미소질량이다.Where r is the radius of the fan, ω is the rotational speed of the fan, R is the radius of curvature of the blade, w is the relative velocity of air, and dm is the micromass of air.
상기한 종래의 진공청소기용 원심팬은 힘 F1의 블레이드(3)에 대한 수직 성분과 F2의 합력이 블레이드(3)의 탄성한도를 넘을 경우에는 블레이드(3)가 꺽여지는 현상이 발생하며 팬이 파손되거나 휘어지게 되며, 이러한 현상은 코킹점과 블레이드(3)의 끝단 사이의 거리 dL을 짧게 하여 방지할 수 있지만, 이 경우에는 상판(1)과 하판(2)의 코킹 부위와 상, 하판(1)(2) 끝단 사이의 거리 dR이 상대적으로 작아져서 상판(1)과 하판(2)의 코킹부가 파손된다. 그리고, 블레이드(3)가 휘어질 경우에는 팬의 출구측 공기의 출구 각도가 변하기 때문에 팬의 성능에 치명적인 결함이 되었으며, 이러한 현상은 팬의 출구측에서 발행하였다.In the above-described vacuum cleaner centrifugal fan, the blade 3 is bent when the vertical component with respect to the blade 3 of the force F1 and the force of F2 exceeds the elastic limit of the blade 3. This phenomenon can be broken or bent, and this phenomenon can be prevented by shortening the distance dL between the caulking point and the end of the blade 3, but in this case, the caulking portions of the upper plate 1 and the lower plate 2 and the upper and lower plates are prevented. (1) (2) The distance dR between the ends becomes relatively small, and the caulking portion of the upper plate 1 and the lower plate 2 is broken. In addition, when the blade 3 is bent, the outlet angle of the air at the outlet side of the fan changes, which is a fatal defect in the performance of the fan. This phenomenon is issued at the outlet side of the fan.
본 고안은 상기한 바와같은 종래의 결함을 해소하기 위하여 안출한 것으로, 상판과 하판에 블레이드가 접촉 지지되는 돌기부를 형성하여 블레이드의 변형을 방지할 수 있도록 한 것인바, 이러한 본 고안을 첨부한 도면에 으하여 상세히 설명하면 다음과 같다.The present invention is devised to solve the conventional defects as described above, it is to form a projection that the blade is in contact with the upper plate and the lower plate to prevent deformation of the blade bar, attached to the present invention If it described in detail as follows.
제4a, b도는 본 고안에 의한 팬의 상판과 하판의 구성도이고, 제5도는 블레이드의 구성도이며, 제6도는 팬의 조립도를 보인 것으로, 이에 도시한 바와같이, 상판(1)과 하판(2)에 블레이드(3)의 끝단부가 접촉지지되는 엠보싱 돌기(4)를 형성하여서 된 것이다.Figure 4a, b is a block diagram of the upper plate and the lower plate of the fan according to the present invention, Figure 5 is a block diagram of the blade, Figure 6 shows the assembly of the fan, as shown in the top plate (1) and The lower plate 2 is formed by forming an embossing protrusion 4 which is in contact with the end of the blade 3.
이러한 본 고안은 상판(1)과 하판(2)에 형성된 엠보싱 돌기(4)에 의해 블레이드(3)의 끝단부가 접촉되어 지지되도록 되어 있으므로 팬이 고속 회전시 블레이드(3)에 가하여 지는 힘이 코킹부와 엠보싱 돌기(4)에 분담되어 블레이드(3)의 변형이 방지되며, 이에 따라 팬의 파손을 방지하고 팬의 성능 변화를 방지하는 이점이 있다.The present invention is designed so that the end of the blade 3 is supported by the embossed protrusion 4 formed on the upper plate 1 and the lower plate 2 so that the fan is applied to the blade 3 when the fan rotates at high speed. The deformation of the blade 3 is prevented by being shared between the part and the embossing protrusion 4, and thus, there is an advantage of preventing the fan from being damaged and preventing the fan from changing performance.
이러한 본 고안은 진공청소기의 원심팬을 포함한 각종 팬에 유리하게 적용할 수 있다.The present invention can be advantageously applied to various fans, including centrifugal fans of vacuum cleaners.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92018049U KR970003052Y1 (en) | 1992-09-22 | 1992-09-22 | Fan of a vacuum cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92018049U KR970003052Y1 (en) | 1992-09-22 | 1992-09-22 | Fan of a vacuum cleaner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940007112U KR940007112U (en) | 1994-04-12 |
| KR970003052Y1 true KR970003052Y1 (en) | 1997-04-10 |
Family
ID=19340498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR92018049U KR970003052Y1 (en) | 1992-09-22 | 1992-09-22 | Fan of a vacuum cleaner |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970003052Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110048374A (en) * | 2009-11-02 | 2011-05-11 | 엘지전자 주식회사 | Robot cleaner |
-
1992
- 1992-09-22 KR KR92018049U patent/KR970003052Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110048374A (en) * | 2009-11-02 | 2011-05-11 | 엘지전자 주식회사 | Robot cleaner |
Also Published As
| Publication number | Publication date |
|---|---|
| KR940007112U (en) | 1994-04-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| REGI | Registration of establishment | ||
| LAPS | Lapse due to unpaid annual fee |