JPS63255117A - Forced air device for car air-conditioner - Google Patents
Forced air device for car air-conditionerInfo
- Publication number
- JPS63255117A JPS63255117A JP9011387A JP9011387A JPS63255117A JP S63255117 A JPS63255117 A JP S63255117A JP 9011387 A JP9011387 A JP 9011387A JP 9011387 A JP9011387 A JP 9011387A JP S63255117 A JPS63255117 A JP S63255117A
- Authority
- JP
- Japan
- Prior art keywords
- recess
- cover
- air
- outside
- damper
- 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.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 238000013016 damping Methods 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 description 12
- 238000007664 blowing Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 4
- 239000011358 absorbing material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00664—Construction or arrangement of damper doors
- B60H1/00671—Damper doors moved by rotation; Grilles
- B60H1/00678—Damper doors moved by rotation; Grilles the axis of rotation being in the door plane, e.g. butterfly doors
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、送風騒音の低減対策を施した車両用空調装置
の送風装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a blower device for a vehicle air conditioner that takes measures to reduce blowing noise.
一般に車両における空調装置から発生する騒音のうち、
例えば空調用空気を送風する送風機から発生する騒音は
かなり大きなものであり、特に送風機が空気取入れ用イ
ンテークダクトの内気導入口の近くに設置される場合に
は、この送風機の発する騒音が内気導入口を通じて車室
内に放出され、乗員に対して耳障りとなる。Of the noise generally generated from air conditioning equipment in vehicles,
For example, the noise generated by a blower that blows air for air conditioning is quite loud, and especially when the blower is installed near the inside air inlet of the air intake duct, the noise generated by this blower is is emitted into the vehicle cabin through the air, causing an audible disturbance to the occupants.
そこで従来、特開昭６０、３５３１７号公報に示すよう
に、インテークダクトの内面、および内気導入口と外気
導入口とを選択的に切換え開閉する内外気切換ダンパに
、吸音材を貼着するようにした提案がなされている。Therefore, as shown in Japanese Patent Application Laid-Open No. 60-35317, sound absorbing materials have been pasted on the inner surface of the intake duct and on the inside/outside air switching damper that selectively opens and closes the inside air inlet and the outside air inlet. Proposals have been made.
このものによると、インテークダクトおよびダンバに貼
着した吸音材が騒音を吸収するので、騒音の低減効果が
認められる。According to this, the sound-absorbing material attached to the intake duct and the damper absorbs noise, so a noise reduction effect is recognized.
〔発明が解決しようとする問題点）
しかしながら、上記従来の構成は、インテークダクトお
よびダンパに吸音材を貼着するだけであり、騒音の低減
効果が小さい不具合がある。[Problems to be Solved by the Invention] However, the above-mentioned conventional configuration only involves adhering a sound absorbing material to the intake duct and the damper, and has a problem in that the noise reduction effect is small.
本発明においては、騒音の低減作用が著しく大きくなる
車両用空調装置の送風装置を提供しようとするものであ
る。The present invention aims to provide a blower device for a vehicle air conditioner that has a significantly greater noise reduction effect.
本発明は、空気の導入口および吹出口を有し通風路を形
成するケースと、このケース内に配置され前記ケース内
の空気の送風を行う送風機と、前記ケース内に配置され
前記通風路の空気の流れを切換えるダンパとを具備した
車両用空調装置の送風装置において、
上記ダンパは、前記ケースに回動自在に取着されしかも
凹部を形成した基板と、この基板の上記凹部を覆うよう
に設けられたカバーと、このカバーを覆って貼着された
吸音部材とを備え、これらカバーおよび吸音部材に上記
凹部の内外を導通させる孔を形成したことを特徴とする
。The present invention provides a case that has an air inlet and an air outlet and forms a ventilation path, a blower that is placed inside the case and blows the air inside the case, and a blower that is placed inside the case that blows the air inside the case. In a blower device for a vehicle air conditioner, the damper is rotatably attached to the case and has a recess formed therein, and the damper is configured to cover the recess of the board. The present invention is characterized in that it comprises a cover provided and a sound absorbing member attached to cover the cover, and a hole is formed in the cover and the sound absorbing member to allow conduction between the inside and outside of the recess.
本発明によると、凹部の容積をＶ１カバーと吸音部材の
厚みをＬ１上上記部の内外を導通させる孔の開口面積を
Ｓとすると、上記凹部を形成したことにより、
（但し、Ｙは音速）
に相当する周波数ｆＯの音が、共鳴減衰作用によって吸
収される。According to the present invention, by forming the recess, if the volume of the recess is V1, the thickness of the cover is L1, and the thickness of the sound absorbing member is L1, and the opening area of the hole that conducts the inside and outside of the above part is S, then by forming the recess, (where, Y is the speed of sound) Sound with a frequency fO corresponding to is absorbed by the resonance damping effect.
したがって、凹部の容積Ｖ、カバーと吸音部材の厚みＬ
１上上記部の内外を導通させる孔の開口面積Ｓを適宜選
択して、消そうとする音の周波数に合せることにより任
意の周波数の音を減衰させることができ、騒音の低減に
大きく寄与する。Therefore, the volume of the recess V, the thickness L of the cover and the sound absorbing member
1) By appropriately selecting the opening area S of the hole that conducts the inside and outside of the above-mentioned part and matching it to the frequency of the sound to be extinguished, it is possible to attenuate the sound of any frequency, which greatly contributes to noise reduction. .
以下本発明について、図面に示す一実施例にもとづき説
明する。The present invention will be described below based on an embodiment shown in the drawings.
始めに、本発明に係る送風装置の自動車への取付は状況
を、運転席前面側の斜視図としての第４図にもとづき説
明する。First, the installation of the air blower according to the present invention to an automobile will be explained based on FIG. 4, which is a perspective view of the front side of the driver's seat.
図においてＰはインストルメントパネルであり、このイ
ンストルメントパネルＰの裏面空間には空調ユニットが
、長手方向を車両の幅方向となるようにして配置されて
いる。In the figure, P is an instrument panel, and an air conditioning unit is arranged in a space on the back side of the instrument panel P so that its longitudinal direction corresponds to the width direction of the vehicle.
空１週ユニットは、送風装置Ａと、冷房用ユニットＣと
、ヒータユニットＪを有し、かつ空調された空気を前席
へ吹出す吹出口り、Ｅ、Ｆおよび後席へのヒータ吹出口
Ｇ、フロントガラスへのデフロスタ−吹出口Ｈを備えて
いる。The empty one-week unit has a blower A, a cooling unit C, and a heater unit J, and has an outlet that blows out conditioned air to the front seats, E, F, and a heater outlet to the rear seats. G, equipped with a defroster outlet H to the windshield.
送風装置Ａは本発明に係り、これについては後で詳述す
るが、スクロールケーシング１０の上面に内外気切換箱
１が接続されているとともに、側面には上記冷房用ユニ
ットＣが接続されている。なお、この冷房用ユニットＣ
には図示しないが冷房用蒸発記が収容されている。The blower A relates to the present invention, and will be described in detail later, but the inside/outside air switching box 1 is connected to the top surface of the scroll casing 10, and the above-mentioned cooling unit C is connected to the side surface. . In addition, this cooling unit C
Although not shown in the figure, an evaporator for cooling is housed therein.
上記冷房用ユニットＣの下流側には、上記ヒータユニッ
トＪが接続されており、このヒータユニットＪには図示
しない暖房用のヒータコアが収容されている。The heater unit J is connected to the downstream side of the cooling unit C, and this heater unit J accommodates a heating heater core (not shown).
なお、上記吹出口ＤＳＥ、Ｆのうち、ＤとＥは冷房ユニ
ットＣで冷却された冷風を乗員の頭胸部骨に向けて１次
出すベント吹出口であり、またＦはヒータユニットＪ内
で加熱された温風を乗員の足元に向けて吹出すヒータ吹
出口である。Of the above-mentioned air outlets DSE and F, D and E are vent air outlets that primarily emit cold air cooled by the cooling unit C toward the cephalothoracic bones of the occupant, and F is a vent air outlet that is heated in the heater unit J. This is a heater outlet that blows warm air towards the passenger's feet.
送風装置Ａの構成は第１図ないし第３図に示されており
、以下これにもとづき説明する。The configuration of the air blower A is shown in FIGS. 1 to 3, and will be described below based on this.
合成樹脂により略中空直方体に形成された内外気切換箱
ｌには、内気導入口１ａと外気導入口１ｂが、互いに所
定の角度をなして開口されており、これら内気導入口１
ａと外気導入口１ｂは内外気切換ダンパ２にて選択的に
開閉されるようになっている。An inside/outside air switching box l formed of synthetic resin into a substantially hollow rectangular parallelepiped has an inside air inlet 1a and an outside air inlet 1b opened at a predetermined angle to each other.
a and the outside air inlet 1b are selectively opened and closed by an inside/outside air switching damper 2.
内外気切換ダンパ２は内外気切換箱１に収容されており
、シャフト３に支持されている。シャフト３は内外気切
換箱１に回動自在に取付けられており、このシャフト３
の回動に伴って内外気切換ダンパ２も一体に回動される
。The inside/outside air switching damper 2 is housed in the inside/outside air switching box 1 and supported by a shaft 3. The shaft 3 is rotatably attached to the inside/outside air switching box 1.
Along with the rotation, the inside/outside air switching damper 2 is also rotated together.
内外気切換ダンパ２は、上記シャフト３にスボット溶接
等にて固定された鉄等の金属製基板４を有し、この基板
４には、中央部にプレス加工にて成形された凹部５が、
例えば外気導入口１ｂに向けて突出するようにして形成
されている。なお、この凹部５は、第３図に示すように
、矩形状に形成されている。The inside/outside air switching damper 2 has a substrate 4 made of metal such as iron that is fixed to the shaft 3 by sbot welding or the like, and the substrate 4 has a recess 5 formed by press working in the center thereof.
For example, it is formed to protrude toward the outside air inlet 1b. Note that this recess 5 is formed in a rectangular shape, as shown in FIG.
基板４には、上記凹部５の開口部を塞ぐようにして、つ
まり内気導入口１ａに対向する面に金属製のカバー６が
スポット溶接等にて固定されている。A metal cover 6 is fixed to the substrate 4 by spot welding or the like so as to close the opening of the recess 5, that is, on the surface facing the inside air inlet 1a.
カバー６の外表面には吸音部材７が接着剤を介−して貼
着されている。この吸音部材７は、例えばエステル系ウ
レタン樹脂よりなり、風漏れ防止のシール機能を有する
。A sound absorbing member 7 is adhered to the outer surface of the cover 6 via an adhesive. This sound absorbing member 7 is made of, for example, ester-based urethane resin, and has a sealing function to prevent wind leakage.
上記カバー６および吸音部材７には、上記凹部５の内部
を外部と導通させる円形孔８が開口されている。A circular hole 8 is opened in the cover 6 and the sound absorbing member 7 to connect the inside of the recess 5 to the outside.
なお、第１図に示すように、基板４には、上記カバー６
を設けた面と反対側の面に、凹部５を取巻く周囲に位置
して、上記吸音部材７と同様な材質の風漏れ防止のシー
ルパツキン９が接着剤により貼着されている。Note that, as shown in FIG. 1, the board 4 is provided with the cover 6
A seal packing 9 for preventing wind leakage made of the same material as the sound absorbing member 7 is adhered to the surface opposite to the surface provided with the sound absorbing member 7 with an adhesive so as to surround the recess 5.
このような内外気切換箱１は、樹脂製スクロールケーシ
ングＩＯと一体的に形成されている。Such an inside/outside air switching box 1 is integrally formed with a resin scroll casing IO.
スクロールケーシングｌＯは、第１図に示すように、分
割部１０ｃによって図示の上下方向に分割されており、
上方部材１０ａには前記内外気切換箱１が一体成形され
、ている。As shown in FIG. 1, the scroll casing IO is divided by a dividing portion 10c in the vertical direction as shown in the figure.
The inside/outside air switching box 1 is integrally molded on the upper member 10a.
また、この上方部材１０ａには、鉄などの金属製空気吸
入口部材１１がビス１２により取付けられている。この
空気吸入口部材１１には、円形のベルマウス形吸入口Ｌ
ｌａが開口されており、上記内外気切換箱ｌ内に吸入さ
れた空気は、このベルマウス状吸入口１１ａを通じてス
クロールケーシング１０内に吸入されるようになってい
る。Further, an air inlet member 11 made of metal such as iron is attached to the upper member 10a with screws 12. This air inlet member 11 has a circular bell mouth inlet L.
1a is opened, and the air sucked into the inside/outside air switching box 1 is sucked into the scroll casing 10 through this bellmouth-shaped suction port 11a.
スクロールケーシングｌＯの下方部材１０ｂ内には、遠
心ファン１３が増付けられている。遠心ファン１３は、
複数の羽根１３ａと、この羽根１３ａと一体成形された
円錐台形連結部ｔａｂとから構成されている。A centrifugal fan 13 is added in the lower member 10b of the scroll casing IO. The centrifugal fan 13 is
It is composed of a plurality of blades 13a and a truncated conical connecting portion tab integrally formed with the blades 13a.
遠心ファン１３の連結部１３ｂは、モータ１４の出力軸
１４ａにねじ止めなどの周知の固定手段で固定されてい
る。モータ１４は、フランジ１５を介してスクロールケ
ーシング１０の下方部材１０ｂに取付けられている。The connecting portion 13b of the centrifugal fan 13 is fixed to the output shaft 14a of the motor 14 using known fixing means such as screws. The motor 14 is attached to the lower member 10b of the scroll casing 10 via a flange 15.
スクロールケーシング１０には遠心ファン１３の側方に
、スクロールケーシング１０内部の空気を下流側に向け
て送風するための接続口１６（第２図に示す）が開口さ
れている。本実施例では、この接続口１６は前述した冷
房用ユニットＣに接続されているものである。A connection port 16 (shown in FIG. 2) is opened in the scroll casing 10 on the side of the centrifugal fan 13 for blowing air inside the scroll casing 10 toward the downstream side. In this embodiment, this connection port 16 is connected to the cooling unit C mentioned above.
次に、上記の構成による実施例の作用を、第５図を加え
て説明する。Next, the operation of the embodiment with the above configuration will be explained with reference to FIG. 5.
内外気切換ダンパ２が内外気切換箱ｌの内気導入口１ａ
を開口しているとき、車室内の空気は内気導入口１ａを
通じて内外気切換箱ｌに導入され、遠心ファン１３によ
りスクロールケーシングｌＯの内部に吸込まれる。この
吸入空気は、スクロールケーシングｌＯの接続口ＩＢよ
り下流側の冷房用ユニットＣに送風される。The inside/outside air switching damper 2 is connected to the inside air inlet 1a of the inside/outside air switching box l.
When the scroll casing lO is opened, the air inside the vehicle compartment is introduced into the inside/outside air switching box l through the inside air inlet 1a, and is sucked into the inside of the scroll casing lO by the centrifugal fan 13. This intake air is blown to the cooling unit C on the downstream side from the connection port IB of the scroll casing IO.
また、逆に内外気切換ダンパ２が外気導入口１ｂを開口
しているときは、車室外の空気が外気導入口１ｂを通じ
て内外気切換箱ｌよりスクロールケーシング１０の内部
に吸込まれ、この吸入空気は、スクロールケーシングｌ
Ｏの接続口１６より下流側の冷房用ユニットＣに送風さ
れる。Conversely, when the inside/outside air switching damper 2 opens the outside air inlet 1b, the air outside the vehicle compartment is sucked into the scroll casing 10 from the inside/outside air switching box l through the outside air inlet 1b, and this intake air Scroll casing
Air is blown to the cooling unit C on the downstream side from the connection port 16 of the O.
このように、遠心ファン１３による吸引作用によって内
外気切換箱ｌから空気をスクロールケーシングｌＯの内
部に吸込み、この吸入空気を下流側の冷房用ユニットＣ
に送風する時には、遠心ファン１３を通過する空気の流
れに乱れが生じ、騒音が発生する。このような騒音は下
流側および内外気切換箱ｌの方向に放射される。In this way, air is sucked into the scroll casing lO from the inside/outside air switching box l by the suction action of the centrifugal fan 13, and this intake air is sent to the cooling unit C on the downstream side.
When blowing air to the centrifugal fan 13, turbulence occurs in the flow of air passing through the centrifugal fan 13, and noise is generated. Such noise is radiated downstream and in the direction of the inside/outside air switching box l.
車室内の空気をスクロールケーシングｌＯの内部に吸込
んでいる場合は、内外気切換ダンパ２が内気導入口１ａ
を開口しているので、内外気切換箱１まで放出されてい
る送風騒音がこの内気導入口１ａを通じて車室内に放出
され、したがって車室内騒音が高くなる。When the air inside the vehicle interior is sucked into the scroll casing lO, the inside/outside air switching damper 2 is connected to the inside air inlet 1a.
Since this is open, the air blowing noise that has been emitted to the inside/outside air switching box 1 is emitted into the vehicle interior through this inside air introduction port 1a, thereby increasing the noise in the vehicle interior.
しかるに、本実施例においては、内外気切換ダンパ２の
基板４に、凹部５を形成し、この凹部５は円形孔８によ
って内外気切換箱１の内部と導通させたのて、この凹部
５が共鳴減衰室となって騒音を吸収する。However, in this embodiment, a recess 5 is formed in the substrate 4 of the internal/external air switching damper 2, and this recess 5 is made conductive with the inside of the internal/external air switching box 1 through the circular hole 8. It becomes a resonant damping chamber and absorbs noise.
さらに詳しく説明すると、遠心ファン１３で発生した騒
音は内外気切換箱１に放射されるが、内外気切換箱１の
内部に達した音は、円形孔８を通じて内外気切換ダンパ
２の凹部５に進入する。この凹部５は、共鳴減衰室とな
って騒音を吸収する作用を奏するので、騒音が低減され
ることになる。To explain in more detail, the noise generated by the centrifugal fan 13 is radiated to the inside and outside air switching box 1, but the sound that reaches the inside of the inside and outside air switching box 1 is transmitted through the circular hole 8 to the recess 5 of the inside and outside air switching damper 2. enter in. This recess 5 functions as a resonance damping chamber and acts to absorb noise, thereby reducing noise.
具体的に述べると、凹部５の容積をＶ１カバー６と吸音
部材７の厚みをし、上記凹部５の内外を導通させる孔８
の開口面積をＳとすると、上記凹部５を形成したことに
より、
（但し、Ｔは音速）
に相当する周波数ｆＯの音が、共鳴減衰作用によって吸
収されることになる。Specifically, the volume of the recess 5 is equal to the thickness of the V1 cover 6 and the sound absorbing member 7, and a hole 8 is formed to provide electrical continuity between the inside and outside of the recess 5.
Assuming that the opening area of is S, by forming the recess 5, sound at a frequency fO corresponding to (T is the speed of sound) will be absorbed by the resonance damping effect.
ちなみに、第５図において実線で示す特性アは、凹部５
の深さＬ２−２０ｍｍ、吸音部材７の厚さＬ１＝６ｍｍ
、円形孔８の直径Ｄ、０ｍｍに設定した場合の音圧レベ
ル測定値であり、横軸は周波数Ｈ２、縦軸は音圧レベル
ｄＢを示す。第５図の破線で示す特性イは、凹部５の深
さＬ２−０、円形孔８の直径Ｄ−０に設定したもの、す
なわち凹部５を形成しないダンパ２を用いた場合の音圧
レベル測定値である。By the way, characteristic A shown by the solid line in FIG.
depth L2 - 20mm, thickness L1 of sound absorbing member 7 = 6mm
, are sound pressure level measurement values when the diameter D of the circular hole 8 is set to 0 mm, the horizontal axis shows the frequency H2, and the vertical axis shows the sound pressure level dB. Characteristic A shown by the broken line in FIG. 5 is the sound pressure level measurement when the depth of the recess 5 is set to L2-0 and the diameter of the circular hole 8 is set to D-0, that is, when the damper 2 without the recess 5 is used. It is a value.
この特性図から理解できるように、ダンパ２に凹部５を
設けた特性アのものは、ダンパ２に凹部５がない特性イ
のものに比べ、２８０Ｈｚの周波数付近で共鳴減衰され
、この周波数付近の騒音低減に効果が認められる。As can be understood from this characteristic diagram, the damper 2 with the recess 5 provided in the characteristic A has resonance damping around the frequency of 280 Hz compared to the damper 2 with the recess 5 in the characteristic B, and the damper around this frequency Effective in noise reduction.
したがって、凹部５の容積ｖ１カバー６と吸音部材７の
厚みＬ１上上記部５の内外を導通させる孔８の開口面積
Ｓを適宜選択して、消そうとする音の周波数に合せるこ
とにより任意の周波数の音を減衰させることができる。Therefore, by appropriately selecting the volume v1 of the recess 5, the thickness L1 of the cover 6 and the sound absorbing member 7, and the opening area S of the hole 8 that conducts the inside and outside of the above-mentioned part 5 to match the frequency of the sound to be extinguished, an arbitrary value can be obtained. It can attenuate the sound frequency.
このようなことから、内外気切換箱１まで達している送
風騒音は、内気導入口１ａを通じて車室内に放出される
以前に上記凹部５の共鳴減衰作用によって低減されるこ
とになり、車室内に放出する量が少なくなるので車室内
騒音は小さくなる。For this reason, the blowing noise reaching the inside/outside air switching box 1 is reduced by the resonance damping effect of the recess 5 before being released into the passenger compartment through the inside air introduction port 1a, and the noise is reduced by the resonance damping effect of the recess 5. Since the amount emitted is reduced, the noise inside the vehicle is reduced.
なお、内外気切換箱１まで達している送風騒音は、内外
気切換ダンパ２に当りここで反射して内気導入口１ａか
ら車室内に放出されるものであるが、内外気切換ダンパ
２の騒音反射面となる表面には吸音部材７を貼着しであ
るから、騒音が反射する時に吸音部材７に吸音され、こ
のことも内気導入口１ａから車室内に放出される騒音を
低減するのに在勤となっている。Note that the air blowing noise that reaches the inside/outside air switching box 1 hits the inside/outside air switching damper 2, is reflected there, and is emitted into the passenger compartment from the inside air inlet 1a. Since the sound absorbing member 7 is attached to the surface that becomes the reflective surface, when the noise is reflected, the sound is absorbed by the sound absorbing member 7, and this also reduces the noise emitted into the passenger compartment from the inside air inlet 1a. Currently at work.
なお、本発明は上記の実施例に制約されるものではなく
、以下に述べるような種々の変形が可能である。Note that the present invention is not limited to the above-described embodiments, and various modifications as described below are possible.
（１）送風機の取付は位置は、実施例のような内外気切
換箱１直下のスクロールケーシング１０内部に限らず、
冷房ユニットＣ１ヒータユニットＪの下流側でもよい。(1) The location of the blower is not limited to the inside of the scroll casing 10 directly below the inside/outside air switching box 1 as in the embodiment.
The cooling unit C1 may be located downstream of the heater unit J.
（２）空調装置は、上述のように熱交換器を有するもの
に限らず、換気のみを行うものでも適用可能である。(2) The air conditioner is not limited to one having a heat exchanger as described above, but may also be one that only performs ventilation.
（３）本発明のダンパは、内外気切換ダンパに限定され
ず、吹出口切換ダンパあるいは熱交換器への空気流入量
を調節して吹出空気温度を調節する温度制御ダンパに適
用してもよいことは言うまでもない。(3) The damper of the present invention is not limited to an inside/outside air switching damper, but may be applied to an outlet switching damper or a temperature control damper that adjusts the temperature of outlet air by adjusting the amount of air flowing into a heat exchanger. Needless to say.
（４）上記の実施例においては、内外気切換ダンパ２の
基板４のみに凹部５を形成したが、基板４とカバー６と
にそれぞれ凹部を設け、これら基板４とカバー６を衝合
させた場合に１個の凹部となるように構成してもよい。(4) In the above embodiment, the concave portion 5 was formed only in the substrate 4 of the internal/external air switching damper 2, but a concave portion was provided in the substrate 4 and the cover 6, respectively, and the substrate 4 and the cover 6 were brought into contact with each other. In some cases, it may be configured to have one recess.
（５）上記の実施例では、カバー６および吸音部材７に
円形孔８を設けたが、この孔の形状は円形でなく種々の
形状でも可能である。(5) In the above embodiment, the cover 6 and the sound absorbing member 7 are provided with the circular hole 8, but the shape of the hole is not circular but may be of various shapes.
以上説明したように本発明によると、ダンパの基板に形
成した凹部が共鳴減衰室となり、任意の周波数の音を減
衰させることができるので、騒音の低減作用が著しく大
きくなる。As described above, according to the present invention, the recess formed in the substrate of the damper becomes a resonant damping chamber and can attenuate sound of any frequency, thereby significantly increasing the noise reduction effect.
図面は本発明の一実施例を示し、第１図は第２図中１、
線の断面図、第２図は送風装置Ａの平面図、第３図は内
外気切換ダンパの斜視図、第４図は車両の空調ユニット
の構成例を示す運転席前面側の斜視図、第５図は音圧レ
ベルの特性図である。
Ａ・・・送風装置、Ｃ・・・冷房用ユニット、Ｊ・・・
ヒータユニット、Ｄ、Ｅ、Ｆ・・・吹出口、Ｇ・・・ヒ
ータ吹出口、Ｈ・・・デフロスタ−吹出口、■・・・内
外気切換箱、ｌａ・・・内気導入口、ｌｂ・・・外気導
入口、２・・・内外気切換ダンパ、３・・・シャフト、
４・・・基板、５・・・凹部、６・・・カバー、７・・
・吸音部材、８・・・孔、１０・・・スクロールケーシ
ング、１３・・・遠心ファン、１４・・・モータ。
出願人代理人 弁理士 鈴江武彦
愈゛、° １ 図
第２［The drawings show one embodiment of the present invention, and FIG. 1 shows 1 in FIG.
2 is a plan view of the blower A, FIG. 3 is a perspective view of the inside/outside air switching damper, FIG. 4 is a perspective view of the front side of the driver's seat showing an example of the configuration of the vehicle air conditioning unit, FIG. 5 is a characteristic diagram of sound pressure level. A...Blower, C...Cooling unit, J...
Heater unit, D, E, F...Air outlet, G...Heater outlet, H...Defroster outlet, ■...Inside/outside air switching box, la...Inside air inlet, lb. ... Outside air inlet, 2 ... Inside and outside air switching damper, 3 ... Shaft,
4... Board, 5... Recess, 6... Cover, 7...
- Sound absorbing member, 8... Hole, 10... Scroll casing, 13... Centrifugal fan, 14... Motor. Applicant's agent Patent attorney Takehiko Suzue, ° 1 Figure 2 [
Claims (2)
るケースと、このケース内に配置され前記ケース内の空
気の送風を行う送風機と、上記ケース内に設置され前記
通風路の空気の流れを切換るダンパとを具備した車両用
空調装置の送風装置において、 上記ダンパは、前記ケースに回動自在に取着されるとと
もに凹部を形成した基板と、この基板に上記凹部を覆う
ように設けられたカバーと、このカバーを覆って貼着さ
れた吸音部材とを備え、これらカバーおよび吸音部材に
上記凹部の内外を導通させる孔を形成したことを特徴と
する車両用空調装置の送風装置。(1) A case that has an air inlet and an air outlet and forms a ventilation path; a blower that is placed inside the case and blows the air inside the case; and a blower that is installed inside the case and blows the air in the ventilation path. In a blower device for a vehicle air conditioner, the damper is rotatably attached to the case and includes a substrate having a recess formed therein, and a substrate configured to cover the recess. An air blower for a vehicle air conditioner, comprising: a cover provided on the cover; and a sound absorbing member adhered to cover the cover, and a hole is formed in the cover and the sound absorbing member to allow conduction between the inside and outside of the recess. Device.
を有し、前記ダンパは上記両導入口を選択的に開閉する
内外気切換ダンパであることを特徴とする特許請求の範
囲第１項記載の車両用空調装置の送風装置。(2) Claims characterized in that the air inlet has an inside air inlet and an outside air inlet, and the damper is an inside/outside air switching damper that selectively opens and closes both the inlets. A blower device for a vehicle air conditioner according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9011387A JPS63255117A (en) | 1987-04-13 | 1987-04-13 | Forced air device for car air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9011387A JPS63255117A (en) | 1987-04-13 | 1987-04-13 | Forced air device for car air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63255117A true JPS63255117A (en) | 1988-10-21 |
Family
ID=13989458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9011387A Pending JPS63255117A (en) | 1987-04-13 | 1987-04-13 | Forced air device for car air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63255117A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2780347A1 (en) * | 1998-06-29 | 1999-12-31 | Valeo Climatisation | MOTOR VEHICLE HEATING AND / OR AIR CONDITIONING BOX WITH IMPROVED ACOUSTIC PERFORMANCE |
| JP2007269230A (en) * | 2006-03-31 | 2007-10-18 | Mitsubishi Motors Corp | Air-conditioner |
| JP2011218824A (en) * | 2010-04-02 | 2011-11-04 | Denso Corp | Air conditioner |
| WO2020080036A1 (en) * | 2018-10-16 | 2020-04-23 | 株式会社ヴァレオジャパン | Blower and air conditioning device |
-
1987
- 1987-04-13 JP JP9011387A patent/JPS63255117A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2780347A1 (en) * | 1998-06-29 | 1999-12-31 | Valeo Climatisation | MOTOR VEHICLE HEATING AND / OR AIR CONDITIONING BOX WITH IMPROVED ACOUSTIC PERFORMANCE |
| EP0968857A1 (en) * | 1998-06-29 | 2000-01-05 | Valeo Climatisation | Vehicle heating and/or airconditioning housing with improved acoustic performances |
| JP2007269230A (en) * | 2006-03-31 | 2007-10-18 | Mitsubishi Motors Corp | Air-conditioner |
| JP2011218824A (en) * | 2010-04-02 | 2011-11-04 | Denso Corp | Air conditioner |
| WO2020080036A1 (en) * | 2018-10-16 | 2020-04-23 | 株式会社ヴァレオジャパン | Blower and air conditioning device |
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