JP4640317B2 - Drain connection device for air conditioner - Google Patents
Drain connection device for air conditioner Download PDFInfo
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- JP4640317B2 JP4640317B2 JP2006299950A JP2006299950A JP4640317B2 JP 4640317 B2 JP4640317 B2 JP 4640317B2 JP 2006299950 A JP2006299950 A JP 2006299950A JP 2006299950 A JP2006299950 A JP 2006299950A JP 4640317 B2 JP4640317 B2 JP 4640317B2
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- sleeve
- drain
- drain hose
- air conditioner
- connection device
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
- F24F2013/227—Condensate pipe for drainage of condensate from the evaporator
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Description
この発明は、室内ユニットのドレンパンの結露水をドレンホースを介して排水する空気調和機のドレン接続装置に関するものである。 The present invention relates to a drain connection device for an air conditioner that drains condensed water from a drain pan of an indoor unit through a drain hose.
空気調和機は、屋外に設置される室外ユニットと、室内側の壁面等に設置される室内ユニットとで構成されており、この室内ユニット内には熱交換器で結露したドレン水を貯溜するドレンパンが設けられている。そして、このドレンパンには排水用の連結筒部（ドレンソケット）が設けられていて、この連結筒部に排水用のドレンホースが接続されるようになっている。 An air conditioner is composed of an outdoor unit installed outdoors and an indoor unit installed on a wall surface on the indoor side, etc., and a drain pan that stores drain water condensed by a heat exchanger in the indoor unit. Is provided. The drain pan is provided with a connecting cylinder portion (drain socket) for drainage, and a drain hose for drainage is connected to the connecting cylinder portion .
上記連結筒部にドレンホースを接続するようにした従来例としては、例えば特許文献１〜３を挙げることができる。 For example, Patent Documents 1 to 3 can be cited as conventional examples in which a drain hose is connected to the connecting cylinder portion .
上記特許文献１では、ドレンホースを蛇腹状に形成し、ドレンパンとの接続箇所に近い近傍部は蛇腹状の襞を他の部分より深く設定し、この近傍部におけるドレンホースの伸張能力を大きくしている。これにより、ドレンパンとの接続近傍でドレンホースに引っ張りの外力が作用した場合、この引っ張りに伴うドレンホースの伸びを近傍部において吸収し、ドレンホースが破断したり、ドレンパンから外れたりするのを防止している。 In the above-mentioned Patent Document 1, the drain hose is formed in a bellows shape, and the vicinity portion near the connection point with the drain pan is set deeper in the bellows shape than the other portions, and the drain hose in the vicinity portion has an increased ability to extend. ing. As a result, when a tensile external force acts on the drain hose in the vicinity of the connection with the drain pan, the extension of the drain hose accompanying this tension is absorbed in the vicinity, and the drain hose is prevented from breaking or coming off the drain pan. is doing.
また、特許文献２では、ドレンホースのドレンパンへの接続端部近傍に、空気調和機前面方向へ突出する操作金具を設けて、この操作金具に係止孔を穿孔し、この係止孔にネジを差し込んで、操作金具がドレンパンに固定されるようになっている。これにより、ドレンパンとドレンホースを容易且つ安全に脱着させるようにしている。 Further, in Patent Document 2, an operation fitting that protrudes in the front direction of the air conditioner is provided in the vicinity of the connection end of the drain hose to the drain pan, and a locking hole is drilled in the operation fitting. The operation fitting is fixed to the drain pan. Thereby, the drain pan and the drain hose are easily and safely detached and attached.
さらに、特許文献３では、熱交換器の下方に配置されるドレンパンのドレン排出口に係合爪を設け、この係合爪とドレンホースの接続口部材に設けられた係合爪との係合によってドレンホースをドレン排出口にワンタッチで固定接続するようにしている。これにより、ドレンホースの固定に付属部品を使用することなくドレンホースをドレンパンに強固に設置している。
しかしながら、上記特許文献１は、単にドレンホースをドレンパンに接続しているだけなので、ドレンホースが外れ易い構造であり、また、水漏れも生じ易いという問題を有している。特許文献２においては、ネジにより操作金具をドレンパンに固定しているので、ネジ締め工程が必要となり、作業工数が増加すると共に、組み付けの作業性が劣るという問題を有している。また、ネジを用いているので、部品点数が増加してしまうことになる。更に、特許文献３では、ドレンホースの固定がワンタッチで可能ではあるが、部品を製造するための金型が複雑な構造となるという問題がある。 However, Patent Document 1 has a problem that since the drain hose is simply connected to the drain pan, the drain hose is easily detached and water leakage is likely to occur. In Patent Document 2, since the operation fitting is fixed to the drain pan with a screw, a screw tightening process is required, which increases the work man-hours and inferior workability of assembly. In addition, since screws are used, the number of parts increases. Furthermore, in Patent Document 3, although the drain hose can be fixed with one touch, there is a problem that a mold for manufacturing a component has a complicated structure.
また、他の従来例を挙げると、これは、ドレンホースと排水用の連結筒部との接続部にゴム製のスリーブを介設したもので、さらにその上に環状の固定金具を巻回し、これをネジ止めしておくという構造のものである。この構造においては、ドレンホースをドレンパンに設けられている連結筒部に組み付ける時、ドレンホースの先端の内部に入れているゴム製のスリーブが硬いために、連結筒部にドレンホースを組み付け難いという問題点がある。そのため、ドレンホースの連結筒部への組み付けを向上させるために、スリーブの内径を大きくするとスリーブの内周面と連結筒部の外周面との間に隙間が生じて水漏れが生じたり、接続作業の際にドレンホースを引っ張るとドレンホースが連結筒部から抜けたりするという不具合が発生する。また、この抜け防止に固定金具を付けてネジ止めをしているため、別部品として、固定金具やネジが必要となり、部品点数が増加し、また、組み付けの作業工数が増えるという問題が生じる。 In addition, to give another conventional example, this is a rubber sleeve interposed between the drain hose and the connecting cylinder part for drainage, and an annular fixing metal fitting is wound on the sleeve, It has a structure in which this is screwed. In this structure, when the drain hose is assembled to the connecting cylinder provided in the drain pan, the rubber hose inserted inside the tip of the drain hose is hard, so it is difficult to assemble the drain hose to the connecting cylinder. There is a problem. Therefore, in order to improve the assembly of the drain hose to the connecting cylinder part , if the inner diameter of the sleeve is increased, a gap is generated between the inner peripheral surface of the sleeve and the outer peripheral surface of the connecting cylinder part , causing water leakage or connection. If the drain hose is pulled during the operation, the drain hose may come off from the connecting cylinder . In addition, since the fixing bracket is attached and screwed to prevent this from coming off, a fixing bracket and a screw are required as separate parts, resulting in an increase in the number of parts and an increase in the number of assembly work steps.
この発明は上記従来の問題を解決するためになされたものであって、少なくとも以下に示す目的を達成することが可能な空気調和機のドレン接続装置を提供するものである。
（１）排水用の連結筒部（ドレンソケット）へのドレンホースの接続の作業性を向上させること。
（２）接続後の水漏れを防止して品質を向上させること。
（３）接続作業でドレンホースが簡単に外れないようにして、接続作業性の向上を図ること。
（４）別途必要としていた固定金具やネジを無くして、作業工数と部品点数を削減してコストダウンを図ること。
The present invention has been made to solve the above-described conventional problems, and provides a drain connection device for an air conditioner that can achieve at least the following objects.
(1) To improve the workability of connecting the drain hose to the connecting cylinder (drain socket) for drainage.
(2) Improve quality by preventing water leakage after connection.
(3) To improve the connection workability so that the drain hose is not easily detached during the connection work.
(4) Eliminate the need for fixing brackets and screws, and reduce the number of work steps and parts to reduce costs.
そこで、この発明の請求項１に記載の空気調和機のドレン接続装置では、室内ユニット１のドレンパン２に設けられている排水用の連結筒部３にドレンホース４の先端部分を接続する空気調和機のドレン接続装置であって、前記ドレンホース４の先端部分に略円筒状の接続部１０を形成し、弾性体より成る略円筒状のスリーブ２０の外周部に突部２１を周設すると共に、このスリーブ２０を、前記ドレンホース４の接続部１０の内部に遊嵌し、前記ドレンホース４の接続部１０には、上記スリーブ２０がドレンホース４に先端側へ相対移動したときに前記スリーブ２０の突部２１に接触する係合部１６を形成し、前記係合部１６は、前記ドレンホース４の接続部１０の内壁を先端側に至るほど径小となるテーパ状に形成してなるテーパ面１７と、前記ドレンホース４の接続部１０の内周側に径方向内方へと突出すると共に、前記スリーブ２０の突部２１の端面に当接するように形成してなる突出面１５とを有し、前記スリーブ２０内に前記連結筒部３を挿入し、該スリーブ２０の内周面を前記連結筒部３の外周面に圧着させた状態において、前記ドレンホース４を連結筒部３から離脱する方向に移動させることにより、前記連結筒部３と、前記接続部１０の係合部１６とで、前記スリーブ２０の突部２１を圧縮、かつ密封し、これにより連結筒部３にドレンホース４の先端部分を接続することを特徴とする。 Therefore, in the drain connection device for an air conditioner according to claim 1 of the present invention, the air conditioner in which the leading end portion of the drain hose 4 is connected to the drainage connecting cylinder portion 3 provided in the drain pan 2 of the indoor unit 1. A drain connecting device of the machine, wherein a substantially cylindrical connecting portion 10 is formed at a tip portion of the drain hose 4, and a protrusion 21 is provided around an outer peripheral portion of a substantially cylindrical sleeve 20 made of an elastic body. The sleeve 20 is loosely fitted inside the connection portion 10 of the drain hose 4, and the sleeve 20 is moved to the drain hose 4 relative to the distal end side in the connection portion 10 of the drain hose 4. The engaging portion 16 that contacts the 20 protruding portions 21 is formed, and the engaging portion 16 is formed in a tapered shape in which the inner wall of the connecting portion 10 of the drain hose 4 decreases in diameter toward the distal end side. Tapered surface 17 The on the inner peripheral side of the connecting portion 10 of the drain hose 4 with projecting the radially inwardly, and a projecting surface 15 obtained by forming so as to abut against the end face of the projecting portion 21 of the sleeve 20, A direction in which the drain hose 4 is detached from the connecting cylinder part 3 in a state where the connecting cylinder part 3 is inserted into the sleeve 20 and the inner peripheral surface of the sleeve 20 is crimped to the outer peripheral surface of the connecting cylinder part 3. , The projecting portion 21 of the sleeve 20 is compressed and sealed by the connecting tube portion 3 and the engaging portion 16 of the connecting portion 10, whereby the drain hose 4 is connected to the connecting tube portion 3. The tip portion is connected.
請求項２に記載の空気調和機のドレン接続装置は、前記排水用の連結筒部３の外径を先端側に至るほど径小としていることを特徴とする。 The drain connection device for an air conditioner according to claim 2 is characterized in that the outer diameter of the draining connecting cylinder portion 3 is made smaller toward the distal end side.
請求項３に記載の空気調和機のドレン接続装置は、前記スリーブ２０の内周面に凸部２５、２６を周設していることを特徴とする。 The drain connection device for an air conditioner according to a third aspect is characterized in that convex portions 25 and 26 are provided around the inner peripheral surface of the sleeve 20.
請求項４に記載の空気調和機のドレン接続装置は、前記突部２１はスリーブ２０の先端部に、また前記突出面１５は接続部１０の先端部にそれぞれ形成されていることを特徴とする。 The drain connection device for an air conditioner according to claim 4 , wherein the protrusion 21 is formed at the tip of the sleeve 20, and the protrusion 15 is formed at the tip of the connection 10. .
請求項５に記載の空気調和機のドレン接続装置は、前記スリーブ２０には、複数の突部２１・・２４を並設していることを特徴とする。 The drain connection device for an air conditioner according to claim 5 is characterized in that the sleeve 20 is provided with a plurality of protrusions 21.
請求項６に記載の空気調和機のドレン接続装置は、前記スリーブ２０がゴム製であることを特徴とする。 The drain connection device for an air conditioner according to claim 6 is characterized in that the sleeve 20 is made of rubber.
本発明の請求項１に記載の空気調和機のドレン接続装置によれば、スリーブ２０内に連結筒部３を挿入し、該スリーブ２０の内周面を前記連結筒部３の外周面に圧着させた状態において、ドレンホース４を連結筒部３とは反対側に引っ張ることで、ドレンホース４を連結筒部３に確実に接続固定できる。そのため、ドレンホース４の連結筒部３への接続作業性が向上し、しかも、突部２１とドレンホース４の接続部１０の係合部１６との密着により水漏れも同時に防止しているので、品質が向上し、不具合の発生が抑制されることになる。また、この連結筒部３へのドレンホース４の接続作業では、上述したようにドレンホース４は、簡単な作業によって、連結筒部３に強固に接続固定されるので、ドレンホース４は容易に外れることはなく、接続作業性の向上を図ることができる。 According to the drain connection device for an air conditioner according to the first aspect of the present invention, the connecting cylinder portion 3 is inserted into the sleeve 20, and the inner peripheral surface of the sleeve 20 is crimped to the outer peripheral surface of the connecting cylinder portion 3. in a state of being, the connection tubular part 3 the drain hose 4 by pulling on the opposite side, can be reliably connected and fixed to the drain hose 4 to the connection tubular part 3. Therefore, the workability of connecting the drain hose 4 to the connecting cylinder part 3 is improved, and water leakage is simultaneously prevented by the close contact between the protrusion 21 and the engaging part 16 of the connecting part 10 of the drain hose 4. As a result, the quality is improved and the occurrence of defects is suppressed. Further, in the operation of connecting the drain hose 4 to the connecting tube portion 3, as described above, the drain hose 4 is firmly connected and fixed to the connecting tube portion 3 by a simple operation. There is no disconnection, and the connection workability can be improved.
また、係合部１６をテーパ面１７と突出面１５との両者で構成しているので、製造が容易であると同時に一段と強固に接続することが可能であるし、またシール性も向上する。 Further, since the engaging portion 16 is constituted by both the protruding surface 15 and tapered surface 17, to which can be produced simultaneously connected firmly with one step on to be easy, and also the sealing property improves.
また、請求項１、及び請求項２に記載の空気調和機のドレン接続装置によれば、前記ドレンホース４の接続部１０の内径を先端側に至るほど径小となるテーパ状に形成したり、前記連結筒部３の外径を先端側に至るほど径小としたりしているので、連結筒部３へのスリーブ２０の挿入ないし圧入が容易となり、作業性を向上させることができる。 Further, according to the drain connection apparatus for an air conditioner according to claim 1, and claim 2, or formed in a tapered shape that is small diameter and the inner diameter of the connecting portion 10 of the drain hose 4 as extending distally Since the outer diameter of the connecting cylinder part 3 is made smaller toward the distal end side, the sleeve 20 can be easily inserted or press-fitted into the connecting cylinder part 3 and workability can be improved.
請求項３に記載の空気調和機のドレン接続装置によれば、前記スリーブ２０の内周面に凸部２５、２６を周設しているので、スリーブ２０と連結筒部３との接続固定を一層強固にし、連結筒部３からドレンホース４を抜けにくくしている。 According to the drain connection device for an air conditioner according to claim 3 , since the convex portions 25 and 26 are provided around the inner peripheral surface of the sleeve 20, the connection fixation between the sleeve 20 and the connecting cylinder portion 3 is fixed. The drain hose 4 is not easily removed from the connecting cylinder portion 3.
請求項４に記載の空気調和機のドレン接続装置によれば、突部２１の弾性変形量を大きくできるので、接続固定を一段と強固に行えると共に、水密性が向上し、水漏れを一段と確実に防止することができる。 According to the drain connection device for an air conditioner according to claim 4 , since the elastic deformation amount of the protrusion 21 can be increased, the connection and fixation can be further strengthened, the water tightness is improved, and the water leakage is more reliably ensured. Can be prevented.
請求項５に記載の空気調和機のドレン接続装置によれば、複数の突部２１・・２４の外周面とドレンホース４の接続部１０の内周面とが接触するので、接続固定を一段と強固に行えると共に、水密性が向上し、水漏れを一段と確実に防止することができる。 According to the drain connection device for an air conditioner according to claim 5 , the outer peripheral surfaces of the plurality of projections 21... 24 and the inner peripheral surface of the connection portion 10 of the drain hose 4 are in contact with each other. While being able to do firmly, watertightness improves and it can prevent water leak more reliably.
請求項６に記載の空気調和機のドレン接続装置によれば、その材料の入手が容易であるので、実施に好適である。 According to the drain connection device for an air conditioner as set forth in claim 6 , since the material is easily available, it is suitable for implementation.
以下、本発明の実施の形態につき、図面を参照して詳細に説明する。図１は室内ユニット１の要部斜視図を示し、室内ユニット１の熱交換器（図示せず）の下方には該熱交換器に発生した結露を貯溜するドレンパン２が配設されている。このドレンパン２の端部には背方に突出した略円筒状の排水用の連結筒部（ドレンソケット）３が設けられており、この連結筒部３に蛇腹状のドレンホース４の先端部分が接続されるようになっている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a main part of the indoor unit 1, and a drain pan 2 for storing dew condensation generated in the heat exchanger is disposed below a heat exchanger (not shown) of the indoor unit 1. FIG. An end portion of the drain pan 2 is provided with a substantially cylindrical connecting cylinder portion (drain socket) 3 for drainage protruding backward, and the leading end portion of the bellows-like drain hose 4 is provided on the connecting cylinder portion 3. Connected.
図２（ａ）はドレンホース４の先端部分の側面図を示し、図２（ｂ）は正面図を示している。また、図３は図２（ａ）のＡ−Ａ断面図である。全体としては可撓性を有するドレンホース４の蛇腹状部１２の先端部分には略円筒状の接続部１０が一体的に形成されており、この接続部１０の先端側の先端部１１は連結筒部３に挿入し易いように外側に拡開した形状としてある。また、接続部１０自体は剛性を有しており、先端部１１側から蛇腹状部１２にかけて径大となるテーパ状に形成されている。特に、接続部１０の内部は図３に示すように、空間部１３が蛇腹状部１２に近づくほど大きく形成されている。すなわち、逆にいうと、接続部１０は、先端側に至るほど径小になるテーパ状に形成されており、その内周面がテーパ面１７となされている。また、ドレンホース４の接続部１０の先端部には、内周側に径方向内方へと突出すると共に、後述するスリーブ２０の突部２１の端面に当接する突出面１５を形成している。そして、上記テーパ面１７とこの突出面１５とで、後述する機能を奏する係合部１６が構成されている。 2A shows a side view of the distal end portion of the drain hose 4, and FIG. 2B shows a front view. FIG. 3 is a cross-sectional view taken along the line AA in FIG. As a whole, a substantially cylindrical connecting portion 10 is integrally formed at the distal end portion of the bellows-like portion 12 of the flexible drain hose 4, and the distal end portion 11 on the distal end side of the connecting portion 10 is connected. The shape is widened outward so that it can be easily inserted into the cylindrical portion 3. Further, the connection part 10 itself has rigidity, and is formed in a tapered shape having a large diameter from the tip part 11 side to the bellows-like part 12. In particular, as shown in FIG. 3, the inside of the connection portion 10 is formed larger as the space portion 13 approaches the bellows-like portion 12. That is, conversely, the connection portion 10 is formed in a tapered shape having a diameter that decreases toward the distal end side, and the inner peripheral surface thereof is a tapered surface 17. In addition, a protruding surface 15 that protrudes radially inward on the inner peripheral side and abuts on an end surface of a protruding portion 21 of a sleeve 20 described later is formed at the distal end portion of the connecting portion 10 of the drain hose 4. . The tapered surface 17 and the projecting surface 15 constitute an engaging portion 16 having a function described later.
図４及び図５は上記ドレンホース４の接続部１０の内部に遊嵌状態で配置されるスリーブ２０を示し、図４（ａ）はスリーブ２０の側面図を、（ｂ）は正面図をそれぞれ示している。また、図５は図４（ａ）のＢ−Ｂ断面図を示している。ゴム製のように弾性体より成る略円筒状のスリーブ２０の外周面には４つの突部２１、２２、２３、２４が所定の間隔をあけて周設されており、また、スリーブ２０の内周面には図５に示すように、断面を略三角形状とした第１凸部２５と第２凸部２６とが周設されている。第１凸部２５はスリーブ２０の軸方向の略中央部分に形成されており、第２凸部２６は第１凸部２５よりは大きく形成され、突部２４の近傍（ドレンホース４の接続部１０の奥部）に形成されている。なおスリーブ２０自体は材料をゴム材としているので、スリーブ２０自体は弾性を有し、また、各突部２１〜２４及び第１、第２凸部２５、２６も当然に弾力性を有している。 4 and 5 show a sleeve 20 that is loosely fitted inside the connecting portion 10 of the drain hose 4, FIG. 4A is a side view of the sleeve 20, and FIG. 4B is a front view. Show. FIG. 5 is a cross-sectional view taken along the line BB in FIG. Four protrusions 21, 22, 23, 24 are provided around the outer peripheral surface of a substantially cylindrical sleeve 20 made of an elastic material such as rubber with a predetermined interval. As shown in FIG. 5, a first convex portion 25 and a second convex portion 26 having a substantially triangular cross section are provided on the peripheral surface. The first convex portion 25 is formed at a substantially central portion in the axial direction of the sleeve 20, the second convex portion 26 is formed larger than the first convex portion 25, and the vicinity of the projecting portion 24 (the connecting portion of the drain hose 4). 10 at the back). Since the sleeve 20 itself is made of a rubber material, the sleeve 20 itself has elasticity, and the protrusions 21 to 24 and the first and second protrusions 25 and 26 naturally have elasticity. Yes.
ここで、上記スリーブ２０の外径、及び長さは、図６（ａ）に示すようにドレンホース４の接続部１０の外径、及び長さよりも小さく形成されており、また、ドレンホース４が接続されるドレンパン２側の排水用の連結筒部３は先端ほど径小としたテーパ部５としてある。なお、スリーブ２０はゴム製であり、その外径、及び長さをドレンホース４の接続部１０の外径、及び長さより小さくしているので、上記のように突出面１５を有しながらも、スリーブ２０を接続部１０の内部に簡単に入れることができる。なおこのとき、上記接続部１０の突出面１５は、スリーブ２０の抜け出しを防止する機能を奏する。 Here, the outer diameter and length of the sleeve 20 are formed smaller than the outer diameter and length of the connecting portion 10 of the drain hose 4 as shown in FIG. The drain connecting pipe 3 on the side of the drain pan 2 is connected to a tapered portion 5 having a smaller diameter at the tip. The sleeve 20 is made of rubber, and its outer diameter and length are made smaller than the outer diameter and length of the connecting portion 10 of the drain hose 4, so that it has the protruding surface 15 as described above. The sleeve 20 can be easily inserted into the connection portion 10. At this time, the protruding surface 15 of the connecting portion 10 functions to prevent the sleeve 20 from coming off.
次に、図６により連結筒部３へのドレンホース４の接続作業について説明する。先ず図６（ａ）に示すように、ドレンホース４の先端部１１の開口部分を連結筒部３に挿入する。ここで、連結筒部３の外径はスリーブ２０の内径とほぼ同一か若干大きく設定されている。ドレンホース４の接続部１０を連結筒部３に挿入していくと、スリーブ２０が連結筒部３に圧入していく。このとき、図６（ｂ）に示すように、連結筒部３の外周面がスリーブ２０の内周面に圧入していき、その面圧力によりスリーブ２０を接続部１０の奥方へ移動させる。スリーブ２０が奥方へ移動させられると、スリーブ２０の奥側突部２４を含めた該スリーブ２０の奥端面が接続部１０の段部状に形成されているストッパ部１４に当接して、該スリーブ２０の移動が規制されて停止する。 Next, the connection work of the drain hose 4 to the connection cylinder part 3 is demonstrated with FIG. First, as shown in FIG. 6A, the opening portion of the distal end portion 11 of the drain hose 4 is inserted into the connecting cylinder portion 3. Here, the outer diameter of the connecting tube portion 3 is set to be substantially the same as or slightly larger than the inner diameter of the sleeve 20. As the connecting part 10 of the drain hose 4 is inserted into the connecting cylinder part 3, the sleeve 20 is press-fitted into the connecting cylinder part 3. At this time, as shown in FIG. 6B, the outer peripheral surface of the connecting tube portion 3 is press-fitted into the inner peripheral surface of the sleeve 20, and the sleeve 20 is moved to the back of the connecting portion 10 by the surface pressure. When the sleeve 20 is moved to the back, the back end surface of the sleeve 20 including the back-side protrusion 24 of the sleeve 20 comes into contact with the stopper portion 14 formed in the stepped shape of the connecting portion 10, and the sleeve 20 The movement of 20 is restricted and stops.
さらに、ドレンホース４の接続部１０を連結筒部３側に押していくと、図６（ｃ）に示すように、連結筒部３がスリーブ２０内に圧入していく状態となり、そのため、スリーブ２０は外径側に伸びて該スリーブ２０の内径は拡がっていく。また、スリーブ２０の奥の端部の突部２４が外径側に伸びていくが、接続部１０の端部は径大となるテーパ状としてその内部の空間部１３を突部２４等が拡がるスペースとして利用することで、作業性を向上している。また、連結筒部３がスリーブ２０内に圧入されていくと、第１凸部２５、第２凸部２６が順次連結筒部３の外周面に密着ないし圧接し、スリーブ２０が連結筒部３に強固に固定されることになる。 Further, when press the connection portion 10 of the drain hose 4 to the connection tubular part 3 side, as shown in FIG. 6 (c), a state in which connection tubular part 3 is gradually pressed into the sleeve 20, therefore, the sleeve 20 Extends to the outer diameter side and the inner diameter of the sleeve 20 increases. Further, the protrusion 24 at the back end of the sleeve 20 extends toward the outer diameter side, but the end of the connection portion 10 is tapered to have a large diameter, and the protrusion 24 and the like expand the space 13 inside thereof. Workability is improved by using it as a space. Further, when the connecting cylinder portion 3 is press-fitted into the sleeve 20, the first convex portion 25 and the second convex portion 26 are in close contact with or pressed against the outer peripheral surface of the connecting cylindrical portion 3, and the sleeve 20 is connected to the connecting cylindrical portion 3. It will be firmly fixed to.
次に、図６（ｃ）の状態から図６（ｄ）に示すように、ドレンホース４を蛇腹状部１２側（つまり、ドレンホース４が連結筒部３から抜け出す方向）に引っ張る。ドレンホース４を引っ張ると、ドレンホース４の接続部１０の先端の突出面１５がスリーブ２０の突部２１の先端面に当たる。このとき、接続部１０の内周面と突部２１の外周面とが面圧力を受けると共に、接続部１０の先端の突出面１５がスリーブ２０の突部２１側の先端面に密着する。この状態では、スリーブ２０は軸方向に縮んだ状態で、ドレンホース４の接続部１０の内周面と連結筒部３の外周面との間でスリーブ２０が圧縮されて、連結筒部３に対しての面圧力が増加する。これにより、スリーブ２０を含めたドレンホース４は連結筒部３に強固に固定され、ドレンホース４は連結筒部３からの抜け出しが規制される。すなわち、連結筒部３の外周面と、接続部１０の内周面と、接続部１０の突出面１５とで、スリーブ２０の突部２１を圧縮、かつ密封し、これにより連結筒部３にドレンホース４の先端部分を接続しているのである。この理由について説明すると、突出面１５からの押圧力によって、スリーブ２０の突部２１の近傍が圧縮され、この部分が径方向外方へも、また径方向内方へも弾性変形し、この力でもって、突部２１の近傍が接続部１０のテーパ面１７と連結筒部３の外周面とに圧接するが、この状態で、ドレンホース４の引っ張り力を解除しても、上記突部２１の近傍の弾性変形は、突部２１の近傍と、連結筒部３の外周面、接続部１０のテーパ面１７、接続部１０の突出面１５との摩擦力によって復元されず、この状態が維持されるためであって、このような状態のことを、「圧封」（圧縮され、かつ密封された状態）と呼ぶこともある。そして、この状態から、さらにドレンホース４の引っ張っても、上記弾性変形量が増加し、「圧封量」（圧縮され、かつ密封されている量）が増加するので、ドレンホース４は一層抜け出しにくくなる。 Next, as shown in FIG. 6D from the state of FIG. 6C, the drain hose 4 is pulled toward the bellows-shaped part 12 side (that is, the direction in which the drain hose 4 comes out of the connecting cylinder part 3). When the drain hose 4 is pulled, the protruding surface 15 at the tip of the connecting portion 10 of the drain hose 4 hits the tip surface of the protruding portion 21 of the sleeve 20. At this time, the inner peripheral surface of the connecting portion 10 and the outer peripheral surface of the protruding portion 21 are subjected to surface pressure, and the protruding surface 15 at the leading end of the connecting portion 10 is in close contact with the leading end surface of the sleeve 20 on the protruding portion 21 side. In this state, the sleeve 20 is in a contracted state in the axial direction, and the sleeve 20 is compressed between the inner peripheral surface and the outer peripheral surface of the connection tubular part 3 of the connection portion 10 of the drain hose 4, the connection tubular part 3 The surface pressure on the surface increases. As a result, the drain hose 4 including the sleeve 20 is firmly fixed to the connecting cylinder portion 3, and the drain hose 4 is prevented from coming out of the connecting cylinder portion 3. That is, the outer peripheral surface of the connection tubular part 3, and the inner peripheral surface of the connecting portion 10, with the protruding surface 15 of the connecting portion 10, compressing the projections 21 of the sleeve 20 and sealed, thereby the connection tubular part 3 The tip of the drain hose 4 is connected. Explaining this reason, the pressing force from the projecting surface 15 compresses the vicinity of the projecting portion 21 of the sleeve 20, and this portion is elastically deformed radially outward and radially inward. Accordingly, the vicinity of the projection 21 is pressed against the tapered surface 17 of the connection portion 10 and the outer peripheral surface of the connecting cylinder portion 3. In this state, even if the tensile force of the drain hose 4 is released, the projection 21 The elastic deformation in the vicinity of is not restored by the frictional force between the vicinity of the protrusion 21, the outer peripheral surface of the connecting tube portion 3, the tapered surface 17 of the connecting portion 10, and the protruding surface 15 of the connecting portion 10, and this state is maintained. by way are, that in such a state, "圧封" (compressed and sealed state) and also call Bukoto. From this state, even if the drain hose 4 is further pulled, the amount of elastic deformation increases and the “seal amount” (the amount compressed and sealed) increases, so that the drain hose 4 is further pulled out. It becomes difficult.
ここで、上記圧縮され、かつ密封された状態についてさらに説明すると、上記実施の形態では、ドレンホース４の接続部１０において、テーパ面１７と突出面１５との両者を係合部１６とし、これらを突部２１に接触させて圧縮する機能と密封する機能を果たすものとして使用している。しかしながら、突出面１５は突部２１に接触せず、テーパ面１７だけが突部２１に接触するような場合でも、圧縮され、かつ密封された状態は得られることになる。従って、係合部１６としては、テーパ面１７だけで構成可能である。この場合、突出面１５は、図６（ａ）の初期状態において、スリーブ２０が接続部１０から抜け出すのを防止する作用をなす。また、テーパ面１７を設けず（接続部１０の内周面を円筒状に形成し）、突出面１５だけで突部２１を圧縮、かつ密封する係合部１６を形成することも可能である。もっとも、実施形態のように、係合部１６をテーパ面１７と突出面１５との両者で構成した場合には、水漏れ防止を確実に行なえ、接続固定を強固に行なえるとの利点が生じる。 Here, the compressed and sealed state will be further described. In the above embodiment, in the connecting portion 10 of the drain hose 4, both the tapered surface 17 and the protruding surface 15 are the engaging portions 16. Is used to perform a function of compressing by contacting the protrusion 21 and a function of sealing . However, even when the protruding surface 15 does not contact the protruding portion 21 and only the tapered surface 17 contacts the protruding portion 21, a compressed and sealed state can be obtained. Therefore, the engaging portion 16 can be configured with only the tapered surface 17. In this case, the protruding surface 15 functions to prevent the sleeve 20 from coming out of the connecting portion 10 in the initial state of FIG. It is also possible to form the engaging portion 16 that compresses and seals the protruding portion 21 with only the protruding surface 15 without providing the tapered surface 17 (the inner peripheral surface of the connecting portion 10 is formed in a cylindrical shape). . However, when the engaging portion 16 is composed of both the tapered surface 17 and the projecting surface 15 as in the embodiment, there is an advantage that water leakage can be reliably prevented and connection and fixation can be performed firmly. .
上記実施の形態においては、スリーブ２０の突部２１の外周面とドレンホース４の接続部１０の内周面、及び突部２１を含めたスリーブ２０の先端面と接続部１０の先端の突出面１５との２カ所で密着しており、これにより水漏れを防止することができる。したがって、水漏れを防止するのに、従来では固定金具やネジを用いていたが、本実施形態では、固定金具やネジを用いていないので、作業工数と部品点数の削減が図られ、コストダウンを図ることができる。また、複数の突部２１・・２４の外周面が接続部１０の内周面に圧接するので、この点において、一段と確実に水漏れを防止することができる。 In the above embodiment, the outer peripheral surface of the protrusion 21 of the sleeve 20, the inner peripheral surface of the connection portion 10 of the drain hose 4, and the front end surface of the sleeve 20 including the protrusion 21 and the protrusion surface of the front end of the connection portion 10. 15 is closely attached at two locations, thereby preventing water leakage. Therefore, in order to prevent water leakage, fixing brackets and screws have been used in the past, but in this embodiment, fixing brackets and screws are not used. Can be achieved. In addition, since the outer peripheral surfaces of the plurality of protrusions 21... 24 are in pressure contact with the inner peripheral surface of the connecting portion 10, water leakage can be prevented more reliably at this point.
このように、本実施形態では、ドレンホース４の接続部１０を排水用の連結筒部３に挿入していき、ドレンホース４の挿入が規制された位置でドレンホース４を連結筒部３とは反対側に引っ張るという簡単な作業で、ドレンホース４を連結筒部３に確実に接続固定できる。そのため、ドレンホース４の連結筒部３への接続作業性が向上し、しかも、突部２１の外周面とドレンホース４の接続部１０の内周面との密着により水漏れも同時に防止しているので、品質が向上し、市場からのクレームも減少することになる。また、この連結筒部３へのドレンホース４の接続作業では、上述したようにドレンホース４は連結筒部３に強固に接続固定されるので、ドレンホース４は容易に外れることはなく、接続作業性の向上を図ることができる。 Thus, in this embodiment, the connection part 10 of the drain hose 4 is inserted into the connecting cylinder part 3 for drainage, and the drain hose 4 is connected to the connecting cylinder part 3 at a position where insertion of the drain hose 4 is restricted. The drain hose 4 can be securely connected and fixed to the connecting cylinder portion 3 by a simple operation of pulling to the opposite side. Therefore, the workability of connecting the drain hose 4 to the connecting cylinder portion 3 is improved, and water leakage is prevented simultaneously by the close contact between the outer peripheral surface of the projection 21 and the inner peripheral surface of the connection portion 10 of the drain hose 4. As a result, quality is improved and complaints from the market are reduced. In addition, in the operation of connecting the drain hose 4 to the connecting cylinder part 3, the drain hose 4 is firmly connected and fixed to the connecting cylinder part 3 as described above, so that the drain hose 4 is not easily detached and connected. Workability can be improved.
また、スリーブ２０の突部２１の先端面とドレンホース４の接続部１０の突出面１５とを密着させているので、突部２１の外周面と接続部１０の内周面、及び突部２１の先端面と接続部１０の突出面１５との２カ所での密着部分で、水漏れを完全に防止することができる。更には、連結筒部３の外径を先端側に至るほど径小としたテーパ部５を形成しているので、連結筒部３へのスリーブ２０の挿入ないし圧入が容易となり、作業性を向上させることができる。 Moreover, since the front end surface of the protrusion 21 of the sleeve 20 and the protruding surface 15 of the connecting portion 10 of the drain hose 4 are in close contact, the outer peripheral surface of the protruding portion 21, the inner peripheral surface of the connecting portion 10, and the protruding portion 21. Water leakage can be completely prevented at two close contact portions of the front end surface and the protruding surface 15 of the connecting portion 10. Furthermore, since the tapered portion 5 is formed such that the outer diameter of the connecting tube portion 3 decreases toward the distal end side, insertion or press-fitting of the sleeve 20 into the connecting tube portion 3 is facilitated, and workability is improved. Can be made.
また、スリーブ２０の内周面に第１凸部２５及び第２凸部２６を周設しているので、スリーブ２０と連結筒部３との接続固定を一層強固にし、連結筒部３からドレンホース４を抜けにくくしている。なお、この第１凸部２５と第２凸部２６は、いずれか一方があれば良いが、２つ設けるのが好適例である。また、スリーブ２０の外周面には４つの突部２１〜２４を設けていたが、先端の突部２１のみでも良く、また、突部２１の幅を図示例より広くして、ドレンホース４の接続部１０の内周との面圧力を一層増加させたり、水漏れを一層防止したりするようにしても良い。 Further, since the first convex portion 25 and the second convex portion 26 are provided around the inner peripheral surface of the sleeve 20, the connection fixing between the sleeve 20 and the connecting cylinder portion 3 is further strengthened, and the drainage from the connecting cylinder portion 3 is performed. The hose 4 is not easily pulled out. One of the first convex portion 25 and the second convex portion 26 only needs to be provided, but providing two is a preferred example. In addition, although the four protrusions 21 to 24 are provided on the outer peripheral surface of the sleeve 20, only the protrusion 21 at the tip may be provided, and the width of the protrusion 21 is made wider than that in the illustrated example, so that the drain hose 4 You may make it further increase the surface pressure with the inner periphery of the connection part 10, or prevent water leak further.
１・・室内ユニット、２・・ドレンパン、３・・連結筒部、４・・ドレンホース、１０・・接続部、１５・・内面、２０・・スリーブ、２１・・突部、２５・・第１凸部、２６・・第２凸部 1 .... Indoor unit, 2 .... Drain pan, 3 .... Connecting cylinder , 4 .... Drain hose, 10 .... Connecting part, 15 .... Inner surface, 20 .... Sleeve, 21 ... Projection, 25 ... 1 convex part, 26 .. 2nd convex part
Claims (6)
前記ドレンホース（４）の先端部分に略円筒状の接続部（１０）を形成し、
弾性体より成る略円筒状のスリーブ（２０）の外周部に突部（２１）を周設すると共に、このスリーブ（２０）を、前記ドレンホース（４）の接続部（１０）の内部に遊嵌し、
前記ドレンホース（４）の接続部（１０）には、上記スリーブ（２０）がドレンホース（４）に先端側へ相対移動したときに前記スリーブ（２０）の突部（２１）に接触する係合部（１６）を形成し、
前記係合部（１６）は、前記ドレンホース（４）の接続部（１０）の内壁を先端側に至るほど径小となるテーパ状に形成してなるテーパ面（１７）と、前記ドレンホース（４）の接続部（１０）の内周側に径方向内方へと突出すると共に、前記スリーブ（２０）の突部（２１）の端面に当接するように形成してなる突出面（１５）とを有し、
前記スリーブ（２０）内に前記連結筒部（３）を挿入し、該スリーブ（２０）の内周面を前記連結筒部（３）の外周面に圧着させた状態において、前記ドレンホース（４）を連結筒部（３）から離脱する方向に移動させることにより、前記連結筒部（３）と、前記接続部（１０）の係合部（１６）とで、前記スリーブ（２０）の突部（２１）を圧縮、かつ密封し、これにより連結筒部（３）にドレンホース（４）の先端部分を接続することを特徴とする空気調和機のドレン接続装置。 A drain connection device for an air conditioner for connecting a distal end portion of a drain hose (4) to a connecting cylinder portion (3) for drainage provided in a drain pan (2) of an indoor unit (1),
A substantially cylindrical connecting portion (10) is formed at the tip of the drain hose (4),
A projecting portion (21) is provided around the outer peripheral portion of a substantially cylindrical sleeve (20) made of an elastic body, and the sleeve (20) is allowed to play inside the connecting portion (10) of the drain hose (4). Fit,
The connection portion (10) of the drain hose (4) is in contact with the protrusion (21) of the sleeve (20) when the sleeve (20) moves relative to the drain hose (4) toward the distal end. Forming a joint (16),
The engaging portion (16) includes a tapered surface (17) formed in a tapered shape whose diameter decreases toward the distal end side of the inner wall of the connecting portion (10) of the drain hose (4), and the drain hose. A projecting surface (15) formed so as to project inward in the radial direction toward the inner peripheral side of the connecting portion (10) of (4) and to come into contact with the end surface of the projecting portion (21) of the sleeve (20). )
In the state where the connecting cylinder part (3) is inserted into the sleeve (20) and the inner peripheral surface of the sleeve (20) is crimped to the outer peripheral surface of the connecting cylinder part (3), the drain hose (4 ) Is moved away from the connecting tube portion (3), and the sleeve (20) protrudes between the connecting tube portion (3) and the engaging portion (16) of the connecting portion (10). A drain connection device for an air conditioner, characterized in that the portion (21) is compressed and sealed, whereby the tip of the drain hose (4) is connected to the connecting tube portion (3).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006299950A JP4640317B2 (en) | 2006-11-06 | 2006-11-06 | Drain connection device for air conditioner |
| PCT/JP2007/071375 WO2008056602A1 (en) | 2006-11-06 | 2007-11-02 | Drain connection device for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006299950A JP4640317B2 (en) | 2006-11-06 | 2006-11-06 | Drain connection device for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2008116127A JP2008116127A (en) | 2008-05-22 |
| JP4640317B2 true JP4640317B2 (en) | 2011-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006299950A Expired - Fee Related JP4640317B2 (en) | 2006-11-06 | 2006-11-06 | Drain connection device for air conditioner |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4640317B2 (en) |
| WO (1) | WO2008056602A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101793572B1 (en) | 2011-01-17 | 2017-11-06 | 삼성전자주식회사 | Drain hose assembly and refrigerator having the same |
| CN104121684A (en) * | 2013-12-18 | 2014-10-29 | 东风柳州汽车有限公司 | Vehicle-mounted air conditioner water drainage pipe |
| US10718547B2 (en) | 2016-05-31 | 2020-07-21 | Mitsubishi Electric Corporation | Air-conditioning apparatus having a drain sensor and associated compressor control |
| CN109631475B (en) * | 2018-12-12 | 2021-03-26 | 广州美的华凌冰箱有限公司 | External drain pipe and refrigerator |
| CN110410875B (en) * | 2019-07-19 | 2021-05-25 | 江苏左恩环境科技有限公司 | Vertical air conditioning equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07174271A (en) * | 1993-12-21 | 1995-07-11 | C I Kasei Co Ltd | Joint structure of pipe |
| JP2000234756A (en) * | 1999-02-15 | 2000-08-29 | Kana Flex Corporation Kk | Connector structure for drain hose |
| JP2000283490A (en) * | 1999-03-31 | 2000-10-13 | Fujitsu General Ltd | Air conditioner |
| JP2001289386A (en) * | 2000-04-04 | 2001-10-19 | Totaku Kogyo Kk | Air-conditioning drain hose |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0255221B1 (en) * | 1986-07-28 | 1990-11-07 | General Motors Corporation | High pressure tube attachment mechanisms |
| KR100505929B1 (en) * | 2003-03-31 | 2005-08-04 | 삼성광주전자 주식회사 | A compressor and A method for connecting pipeline of compressor |
-
2006
- 2006-11-06 JP JP2006299950A patent/JP4640317B2/en not_active Expired - Fee Related
-
2007
- 2007-11-02 WO PCT/JP2007/071375 patent/WO2008056602A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07174271A (en) * | 1993-12-21 | 1995-07-11 | C I Kasei Co Ltd | Joint structure of pipe |
| JP2000234756A (en) * | 1999-02-15 | 2000-08-29 | Kana Flex Corporation Kk | Connector structure for drain hose |
| JP2000283490A (en) * | 1999-03-31 | 2000-10-13 | Fujitsu General Ltd | Air conditioner |
| JP2001289386A (en) * | 2000-04-04 | 2001-10-19 | Totaku Kogyo Kk | Air-conditioning drain hose |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008056602A1 (en) | 2008-05-15 |
| JP2008116127A (en) | 2008-05-22 |
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