JP3436526B2 - Axial fan - Google Patents
Axial fanInfo
- Publication number
- JP3436526B2 JP3436526B2 JP2000361234A JP2000361234A JP3436526B2 JP 3436526 B2 JP3436526 B2 JP 3436526B2 JP 2000361234 A JP2000361234 A JP 2000361234A JP 2000361234 A JP2000361234 A JP 2000361234A JP 3436526 B2 JP3436526 B2 JP 3436526B2
- Authority
- JP
- Japan
- Prior art keywords
- outer peripheral
- wind tunnel
- blade
- peripheral edge
- impeller
- 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.)
- Expired - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は軸流ファン、特に庫
内攪拌等の結露・凍結の懸念環境に採用される軸流ファ
ンに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axial-flow fan, and more particularly to an axial-flow fan used in an environment of concern about dew condensation / freezing such as stirring in a refrigerator.
【０００２】[0002]
【従来の技術】従前結露・凍結の懸念がある環境での攪
拌手段としては、送風効率を犠牲として、結露・凍結に
よる固定部と回転部との固結障害の懸念がない近接した
風洞を設けない、例えば隅取電動機による羽根車駆動
や、図４に示すような、ベンチュリケース１を備える軸
流ファンでも、風洞部１−１の内周面と羽根車２との間
の空隙を大きくすることで、結露・凍結の危険を抑制す
るようにしていた。2. Description of the Related Art As an agitating means in an environment where there is a concern of dew condensation / freezing, a wind tunnel close to the fixed part and the rotating part is not provided at the sacrifice of air blowing efficiency so that there is no concern of solidification between the fixed part and the rotating part. No, for example, driving an impeller by a corner picking motor, or even with an axial fan having a venturi case 1 as shown in FIG. 4, the gap between the inner peripheral surface of the wind tunnel 1-1 and the impeller 2 is increased. Therefore, the risk of condensation and freezing was suppressed.
【０００３】しかし、庫内の攪拌能力向上を目的とした
軸流ファンの採用でも、上述の通り風洞部１−１の内周
面と羽根車２との間の空隙を大きくすることが、攪拌能
力低下に繋がるだけでなく、結露・凍結による固定部と
回転部との固結障害の懸念を絶無とすることも難しいの
が実態であった。However, even if an axial fan is used for the purpose of improving the stirring capacity in the chamber, it is necessary to increase the gap between the inner peripheral surface of the wind tunnel 1-1 and the impeller 2 as described above. In reality, it is difficult not only to reduce the ability but also to eliminate the concern about the solidification failure between the fixed part and the rotating part due to condensation and freezing.
【０００４】[0004]
【発明が解決しようとする課題】上述の如き従来の構成
は、所望の攪拌能力と攪拌効率向上のための省エネルギ
ーという、相反する期待事項を満足させるに足る結果を
実現するために、なお改善の余地を多く残しているのが
実態であった。SUMMARY OF THE INVENTION The conventional structure as described above is still improved in order to realize the desired stirring ability and the energy saving for improving the stirring efficiency, which is sufficient to satisfy the contradictory expectations. The reality was that there was a lot of room left.
【０００５】[0005]
【課題を解決するための手段】本発明に成る軸流ファ
ン、特に結露・凍結による固定部と回転部との固結障害
のの懸念がある環境に使用される軸流ファンは、風洞部
の内周面とブレード外周縁とが軸方向に偏倚して、ブレ
ードの一部が風洞部端面から露出するように配置され、
前記ブレード外周端で形成される羽根車の外周端縁が、
風洞部内周面に対向する部位より露出部位に向かって順
次大きくなる円錐状を成すと共に、風洞部端面から露出
している前記羽根車外周縁の成す最大径が、前記風洞部
内周径よりも大となるよう形成され、また、前記ブレー
ドの外周端縁断面形状は、円弧状もしくは針状を成すよ
うに構成されている。An axial fan according to the present invention, particularly an axial fan used in an environment where there is a risk of solidification failure between a fixed part and a rotating part due to condensation / freezing, is The inner peripheral surface and the blade outer peripheral edge are offset in the axial direction, a part of the blade is arranged so as to be exposed from the end face of the wind tunnel,
The outer peripheral edge of the impeller being formed in the blade outer peripheral end,
While having a conical shape that gradually increases from the portion facing the inner peripheral surface of the wind tunnel toward the exposed portion, the maximum diameter formed by the outer peripheral edge of the impeller exposed from the end surface of the wind tunnel is larger than the inner peripheral diameter of the wind tunnel. The blade has an outer peripheral edge cross-sectional shape that is arc-shaped or needle-shaped.
【０００６】[0006]
【発明の実施の形態】以下図面によって本発明の実施例
を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings.
【０００７】[0007]
【実施例】図１は本発明に成る軸流ファンの例の断面図
である。上述図４に見る従来例と対比すると明らかなよ
うに、従来周知の構成で、送風能力だけに配慮すること
で、ベンチュリケース１の風洞部１−１の内週面に小空
隙を介して羽根車２が対向配置されるのに対し、本発明
では、風洞効果を残しながら前記小空隙での対向による
固定部材である風洞部１−１の内周面と、回転部材であ
る羽根車２の外周端縁２−３との間の結露・凍結を回避
することを意図している。1 is a sectional view of an example of an axial fan according to the present invention. As is clear from comparison with the conventional example shown in FIG. 4, the blade has a well-known configuration and only the air-blowing capacity is taken into consideration, so that the blade is provided on the inner week surface of the wind tunnel 1-1 of the Venturi case 1 through a small gap. While the vehicle 2 is arranged to face each other, in the present invention, the inner circumferential surface of the wind tunnel portion 1-1, which is a fixed member due to the facing in the small air gap, while leaving the wind tunnel effect, and the impeller 2 which is a rotating member. It is intended to avoid condensation and freezing between the outer peripheral edge 2-3.
【０００８】図１に見るように、羽根車２は、ベンチュ
リケース１と軸方向に偏倚するように配置され、ベンチ
ュリケース１の開口端からはみだすようにして回転す
る。これは風洞部１−１の内周面と羽根車２の外周端縁
２−３との対向部を少なくすることにより結露・凍結に
よる固定部と回転部との固結障害の懸念を低減するもの
である。As shown in FIG. 1, the impeller 2 is arranged so as to be axially offset from the venturi case 1 and rotates so as to protrude from the open end of the venturi case 1. This reduces the facing portion between the inner peripheral surface of the wind tunnel part 1-1 and the outer peripheral edge 2-3 of the impeller 2 to reduce the risk of solidification failure between the fixed part and the rotating part due to dew condensation and freezing. It is a thing.
【０００９】そして、前記ブレード２−２の外周端縁が
形成する羽根車２の外周端縁２−３は、ベンチュリケー
ス１の風洞部１−１の内周面と対向する部分を小とし、
ベンチュリケース１の開口端からはみだす側に向かって
大きくなる円錐状に形成することが好ましい。これは、
風洞部１−１の内周面と羽根車２の外周端縁２−３とが
軸方向全域で小空隙を介して対向することを回避するこ
とを意図し、結露・凍結による固定部と回転部との固結
障害の懸念を低減すると共に、羽根車２の外周端縁２−
３を軸方向全域に亘って小径として空隙を拡大すると、
送風能力の低下を来すので、これを回復するための手段
である。The outer peripheral edge 2-3 of the impeller 2 formed by the outer peripheral edge of the blade 2-2 has a small portion facing the inner peripheral surface of the wind tunnel 1-1 of the venturi case 1,
It is preferable that the venturi case 1 is formed in a conical shape that increases from the opening end toward the protruding side. this is,
It is intended to avoid that the inner peripheral surface of the wind tunnel 1-1 and the outer peripheral edge 2-3 of the impeller 2 face each other through a small gap in the entire axial direction, and the fixed portion and the rotation due to condensation / freezing. The outer peripheral edge 2 of the impeller 2 is reduced while reducing the concern of solidification failure with the portion.
If 3 is made small throughout the axial direction and the gap is expanded,
This is a means for recovering this because it reduces the blowing capacity.
【００１０】更に、ベンチュリケース１の風洞部１−１
の内周面に着く結露と、ブレード２−２の外周端縁の結
露とが連結し難いように、前記ブレード２―２の外周端
縁の断面形状は、図２に示す円弧状２−２１、もしくは
図３に示す針状突起２−２２とすることが好ましい。Furthermore, the wind tunnel 1-1 of the venturi case 1
The cross-sectional shape of the outer peripheral edge of the blade 2-2 is an arc shape 2-21 shown in FIG. 2 so that it is difficult to connect the dew condensation on the inner peripheral surface of the blade 2-2 to the condensation on the outer peripheral edge of the blade 2-2. Alternatively, the needle-shaped protrusion 2-22 shown in FIG. 3 is preferable.
【００１１】これらブレード２−２の外周端縁の断面形
状は、図５に見る羽根車外周面に沿うような円弧面を持
つ断面形状２−２３では、水滴の表面張力により結露し
易く、また風洞部１−１の内周面との小空隙を介しての
対向部が大きくなって、結露・凍結による固定部と回転
部との固結障害の懸念が高まる事への配慮である。As for the cross-sectional shape of the outer peripheral edge of these blades 2-2, in the cross-sectional shape 2-23 having an arcuate surface along the outer peripheral surface of the impeller shown in FIG. 5, dew condensation easily occurs due to the surface tension of water droplets. This is to take into consideration that the facing portion of the wind tunnel portion 1-1 with respect to the inner peripheral surface of the wind tunnel portion 1-1 via the small gap becomes large, and there is an increased concern about solidification failure between the fixed portion and the rotating portion due to condensation / freezing.
【００１２】[0012]
【発明の効果】本発明に成る軸流ファン、特に結露・凍
結による固定部と回転部との固結障害のの懸念がある環
境に使用される軸流ファンは、攪拌能力の低下を防ぎな
がら、結露・凍結による固定部と回転部との固結障害の
懸念を抑制することが出来る。Industrial Applicability The axial fan according to the present invention, particularly the axial fan used in an environment where there is a risk of solidification failure between the fixed part and the rotating part due to dew condensation / freezing, can prevent deterioration of stirring ability. , It is possible to suppress concern about solidification failure between the fixed part and the rotating part due to dew condensation / freezing.
【図１】本発明に成る軸流ファンの例の断面図である。FIG. 1 is a sectional view of an example of an axial fan according to the present invention.
【図２】図１に係るブレードの例の説明略図である。2 is a schematic illustration of an example of a blade according to FIG.
【図３】図１に係るブレードの第２例の説明略図であ
る。FIG. 3 is a schematic explanatory view of a second example of the blade according to FIG.
【図４】従来技術に成る軸流ファンの例の断面図であ
る。FIG. 4 is a cross-sectional view of an example of a conventional axial fan.
【図５】図４に係るブレードの例の説明略図である。5 is a schematic illustration of an example of a blade according to FIG.
１ ベンチュリケース
１−１ 風洞部
２ 羽根車
２−１ ハブ
２−１１ ハブ外周面
２−２ ブレード
２−２１ 断面円弧状を成すブレード外周端縁
２−２２ 断面針状を成すブレード外周端縁
２−２３ 羽根車外周面に沿うような平面を持つブレー
ド外周端縁２−３ 羽根車の外周端縁
３ 電動機
1 Venturi case
1-1 Wind tunnel
2 impeller
2-1 hub
2-11 Hub outer peripheral surface
2-2 blade
2-21 Blade outer peripheral edge with arcuate cross section
2-22 Blade outer peripheral edge with needle-shaped cross section
2-23 Breaker having a flat surface along the outer peripheral surface of the impeller
Outer peripheral edge2-3 Outer peripheral edge of impeller
3 electric motor
Claims (4)
と、複数のブレードを有し前記風洞部に対向するように
回転自在に軸支される羽根車と、該羽根車を駆動するた
めその内部に配置される電動機とを備え、結露・凍結等
の懸念のある環境で使用される軸流ファンにおいて、前
記風洞部内周面とブレード外周縁とが軸方向に偏倚し
て、ブレードの一部が風洞部端面から露出するように配
置されると共に、前記ブレード外周端で形成される羽根
車の外周端縁が、風洞部内周面との対向側部位から露出
側部位に向かって順次大きくなる円錐状を成すように形
成されていること、を特徴とする軸流ファン。1. A venturi case having a cylindrical wind tunnel portion, an impeller having a plurality of blades and rotatably supported so as to face the wind tunnel portion, and an inside thereof for driving the impeller. and a disposed the electric motor, the axial flow fan used in an environment with concerns condensation and freezing or the like, the air channel portion in the peripheral surface and the blade outer peripheral edge is offset in the axial direction, a portion of the blade wind tunnel while being arranged so as to be exposed from the section end face, the outer peripheral edge of the impeller being formed in the blade outer peripheral end, a conical comprising sequentially increased toward the exposed side portion from the opposite side portion of the air duct in the circumferential surface An axial fan characterized by being formed so as to form.
の外周端縁の成す最大径が、前記風洞部内周径よりも大
となるよう形成されていること、を特徴とする請求項１
に記載の軸流ファン。2. The maximum diameter formed by the outer peripheral edge of the impeller exposed from the end face of the wind tunnel is formed to be larger than the inner peripheral diameter of the wind tunnel.
Axial fan described in.
弧状を成すこと、を特徴とする請求項１または２に記載
の軸流ファン。3. The axial fan according to claim 1, wherein the blade has an outer peripheral edge cross-sectional shape that is an arc shape.
状を成すこと、を特徴とする請求項１または２に記載の
軸流ファン。4. The axial fan according to claim 1, wherein the outer peripheral edge cross-sectional shape of the blade is needle-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000361234A JP3436526B2 (en) | 2000-11-28 | 2000-11-28 | Axial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000361234A JP3436526B2 (en) | 2000-11-28 | 2000-11-28 | Axial fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002161892A JP2002161892A (en) | 2002-06-07 |
| JP3436526B2 true JP3436526B2 (en) | 2003-08-11 |
Family
ID=18832699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000361234A Expired - Fee Related JP3436526B2 (en) | 2000-11-28 | 2000-11-28 | Axial fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3436526B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100487334B1 (en) * | 2002-11-12 | 2005-05-03 | 엘지전자 주식회사 | axial flow fan apparatus |
-
2000
- 2000-11-28 JP JP2000361234A patent/JP3436526B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002161892A (en) | 2002-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2343458B1 (en) | Blower and heat pump utilizing said blower | |
| US8167562B2 (en) | Centrifugal fan and blower having the same | |
| JP4618077B2 (en) | Cooling fan and blower | |
| KR101263650B1 (en) | fan and shroud assembly | |
| JP2004076722A (en) | Blowing fan | |
| JP2000087898A (en) | Axial flow blower | |
| JP2005105865A (en) | Propeller fan | |
| JPH102299A (en) | Centrifugal blower | |
| JP3436526B2 (en) | Axial fan | |
| JP2006077631A (en) | Impeller for centrifugal blower | |
| JP2008057385A (en) | Blower and cooling apparatus provided with blower | |
| JP6180207B2 (en) | Blower and air conditioner | |
| JP4662438B2 (en) | Axial fan, outdoor unit of air conditioner | |
| JP2005016457A (en) | Blower and heat exchange unit equipped with blower | |
| JP4649146B2 (en) | Propeller fan | |
| JP3098849B2 (en) | Multi-wing blower | |
| JP2924372B2 (en) | Axial fan motor fan | |
| JP2005155579A (en) | Multiblade blower fan | |
| JPH11248198A (en) | Air blowing device | |
| JP2005264803A (en) | Blower, heat exchange unit and refrigerator using blower | |
| JP3938252B2 (en) | Multi-blade blower | |
| JP3539559B2 (en) | Motor fan | |
| CN110821884A (en) | Fan wheel | |
| JP2000136797A (en) | Blast impeller | |
| JP2002285996A (en) | Multi-blade blower fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080606 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090606 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090606 Year of fee payment: 6 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090606 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100606 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110606 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110606 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120606 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120606 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130606 Year of fee payment: 10 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |