JPH05559B2 - - Google Patents
Info
- Publication number
- JPH05559B2 JPH05559B2 JP62071222A JP7122287A JPH05559B2 JP H05559 B2 JPH05559 B2 JP H05559B2 JP 62071222 A JP62071222 A JP 62071222A JP 7122287 A JP7122287 A JP 7122287A JP H05559 B2 JPH05559 B2 JP H05559B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- liquid
- casing
- impeller
- valve chamber
- 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 - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 71
- 238000005192 partition Methods 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 8
- 239000012528 membrane Substances 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は選択型送出ポンプに関し、一層詳細に
は、自動車の前部窓と後部窓とにウオツシヤ液を
選択的に供給する等のように、1つのタンクか
ら、液体を2系統に選択的に供給する選択型送出
ポンプに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a selective delivery pump, and more particularly, to a selective delivery pump for selectively supplying washer fluid to the front window and rear window of an automobile. , relates to a selective delivery pump that selectively supplies liquid to two systems from one tank.
(従来の技術)
自動車の前部窓と後部窓とにウオツシヤ液を供
給する場合、一般には、ウオツシヤ液タンクと送
出ポンプとをそれぞれの窓用に別個に設けてい
る。しかしこのようにそれぞれ洗浄装置を別個に
設けたのでは、各洗浄装置の占有スペースが大き
くなるし、コストも高くなる。(Prior Art) When supplying washer fluid to the front and rear windows of an automobile, generally a washer fluid tank and a delivery pump are provided separately for each window. However, if each cleaning device is provided separately in this way, the space occupied by each cleaning device becomes large and the cost also increases.
これらの問題点を解消するため、共通のウオツ
シヤ液タンクから1つの選択型送出ポンプにより
2つの異なつた洗浄系へ選択的にウオツシヤ液を
送出するようにしたものがある。 In order to solve these problems, there is a system in which the washer fluid is selectively delivered from a common washer fluid tank to two different cleaning systems using one selective delivery pump.
第8図は上記従来の選択型送出ポンプの軸方向
断面図、第9図は第8図の−線断面図を示す
ものである(特開昭60−6096号公報)。 FIG. 8 is an axial cross-sectional view of the conventional selective delivery pump, and FIG. 9 is a cross-sectional view taken along the line -- in FIG. 8 (Japanese Patent Application Laid-Open No. 60-6096).
該ポンプ10は、正逆モータ12の出力軸に遠
心型の羽根車14を固定し、この羽根車14を収
納するハウジング16の側方に弾性膜18によつ
て上下2室に仕切られるマニホールド室20,2
2を形成している。そして上下のマニホールド室
20,22は、ハウジング16からの対称位置す
る2つの接線方向導管24,26によつてそれぞ
れハウジング16内に連通されている。またマニ
ホールド室20,22には弾性膜18に対向する
位置に吐出孔28,30がそれぞれ開口され、こ
の吐出孔28,30開口縁が弁座に形成されてい
る。 The pump 10 has a centrifugal impeller 14 fixed to the output shaft of a forward/reverse motor 12, and a manifold chamber partitioned into two upper and lower chambers by an elastic membrane 18 on the side of a housing 16 that houses the impeller 14. 20,2
2 is formed. The upper and lower manifold chambers 20, 22 are then communicated into the housing 16 by two symmetrically located tangential conduits 24, 26 from the housing 16, respectively. Further, discharge holes 28 and 30 are opened in the manifold chambers 20 and 22 at positions facing the elastic membrane 18, respectively, and the opening edges of the discharge holes 28 and 30 are formed in the valve seat.
このように構成されていて、羽根車14が第9
図において反時針回転方向に回転すれば、軸方向
孔32からハウジング16内に流入した液体は両
接線方向導管24,26から各マニオールド室2
0,22に流入する。その際、羽根車14の回転
方向を向いている接線方向導管24側の方が、羽
根車14の回転方向と逆向きに伸びる接線方向導
管26側よりも圧力が高くなり、両圧力差により
弾性膜18が弁座に密接されて吐出孔30が閉塞
され、一方吐出孔28が開口されて、液体は該吐
出孔28から送出される。 With this configuration, the impeller 14 is the ninth
When the hour hand rotates in the counterclockwise direction in the figure, the liquid flowing into the housing 16 from the axial hole 32 flows through both tangential conduits 24 and 26 into each manifold chamber 2.
0,22. At this time, the pressure on the side of the tangential conduit 24 facing the rotation direction of the impeller 14 is higher than that on the side of the tangential conduit 26 extending in the opposite direction to the rotation direction of the impeller 14, and the pressure difference between the two causes elasticity. The membrane 18 is brought into close contact with the valve seat to close the outlet hole 30, while opening the outlet hole 28 so that liquid can be pumped through the outlet hole 28.
羽根車14が時針回転方向に回転されると今度
は吐出孔28が弾性膜18により閉塞され、一方
吐出孔30が開口されて、液体は該吐出孔30か
ら送出される。 When the impeller 14 is rotated in the hour hand rotation direction, the discharge hole 28 is now closed by the elastic membrane 18, while the discharge hole 30 is opened, and liquid is sent out from the discharge hole 30.
このようにして液体が2系統の流路に選択的に
送出されるのである。 In this way, liquid is selectively delivered to two channels.
(発明が解決しようとする問題点)
しかしながら上記の選択型送出ホンプ10にも
次のような問題点がある。(Problems to be Solved by the Invention) However, the above selective transmission pump 10 also has the following problems.
すなわち、上記の両接線方向導管24,26
は、ポンプの吸入側(軸方向孔32)に対して、
角度は相違するが共に吐出側にある。このため羽
根車14が回転すると、羽根車14の回転方向の
如何にかかわらず、両接線方向導管24,26内
は吸入側に対して共に正圧となる。ただ羽根車1
4の回転方向によつて両接線方向導管24,26
内の圧力に差が生じ、この圧力差を利用して弾性
膜18を一方の弁座に密接させるようにしている
にすぎない。 That is, both tangential conduits 24, 26 mentioned above
is for the suction side (axial hole 32) of the pump,
Although the angles are different, both are on the discharge side. Therefore, when the impeller 14 rotates, regardless of the direction of rotation of the impeller 14, positive pressure is created in both the tangential conduits 24 and 26 relative to the suction side. Just impeller 1
4, both tangential conduits 24, 26
There is a difference in pressure within the valve seat, and this pressure difference is used to simply bring the elastic membrane 18 into close contact with one of the valve seats.
このように両接線方向導管24,26内は共に
正圧となるため、異物等が介在して、弾性膜18
によつてシールされるべきはずの弁座のシールが
不完全になると、吐出圧は低いものの、本来遮断
されるべきはずの吐出孔側にも液体を送出してし
まう問題点がある。また、ポンプの立上り時、電
源電圧の低下時あるいはポンプから噴出ノズル等
までの間の流路抵抗が大きい時等のように、弾性
膜を弁座に完全密着させるに足る圧力差が得にく
い場合にもシールが不完全になり、遮断すべき吐
出孔側に液漏れする問題点がある。 In this way, since the insides of both the tangential conduits 24 and 26 are both positive pressure, foreign matter or the like may be present, causing the elastic membrane 18 to
If the sealing of the valve seat, which should be sealed by the valve seat, becomes incomplete, there is a problem in that, although the discharge pressure is low, the liquid may also be sent to the side of the discharge hole that should originally be blocked. Also, when it is difficult to obtain a pressure difference sufficient to make the elastic membrane completely adhere to the valve seat, such as when the pump starts up, when the power supply voltage drops, or when there is large flow path resistance between the pump and the jet nozzle, etc. However, there is a problem in that the seal becomes incomplete and liquid leaks to the discharge hole that should be blocked.
さらには、第8図に示す従来の選択型送出ポン
プはその構造上、羽根車14を収納するハウジン
グ16中にエアーが溜りやすく、このエアーの排
出能力も低い。エアーが溜るとポンプ機能が著し
く低下し、実用化の支障となつていた。 Furthermore, due to its structure, the conventional selective delivery pump shown in FIG. 8 tends to accumulate air in the housing 16 that houses the impeller 14, and its ability to discharge this air is also low. When air accumulated, the pump function deteriorated significantly, which was an obstacle to practical application.
そこで本発明は上記問題点を解消すべくなされ
たものであり、その目的とするところは、遮断す
べき吐出孔側への液漏れを完璧に阻止しうると共
に、ケーシング内のエアーを確実に排出でき、優
れたポンプ機能を有する選択型送出ポンプを提供
するにある。 Therefore, the present invention was made to solve the above problems, and its purpose is to completely prevent liquid leakage toward the discharge hole that should be blocked, and also to ensure that air inside the casing is discharged. The purpose of the present invention is to provide a selective delivery pump with excellent pumping functions.
(問題点を解決するための手段)
本発明は上記問題点を解決するため次の構成を
備える。(Means for Solving the Problems) In order to solve the above problems, the present invention includes the following configuration.
すなわち、ケーシング内に周壁に多数の羽根を
有する羽根車を収納すると共に該羽根車を正逆モ
ータの出力軸に連結し、前記ケーシング内壁と羽
根車との間に、羽根車が回転することによるポン
プ作用により液体を送出する作用通路を形成し、
前記ケーシング内に、それぞれ前記作用通路に連
通する2つの弁室を隔壁で仕切つて隣接して設
け、該隔壁内に外部液体タンクからの液体を導入
する液体導入路を設け、該液体導入路を前記両弁
室に連通する吸入口を前記隔壁にそれぞれ開口
し、前記両弁室内壁に、前記各吸入口と対向する
位置に吐出口をそれぞれ開口し、前記隔壁を移動
自在に挿通して両端が各前記弁室内に突出可能な
弁棒を設けると共に、この弁棒の両端に、弁棒が
移動した際に、一方の弁室の前記吸入口を開、吐
出口を閉とするとき他方の弁室の前記吸入口を
閉、吐出口を開となす弁体をそれぞれ固設し、前
記ケーシング内壁で前記隔壁以外の個所に、ケー
シングと前記液体導入路を連通させ、ケーシング
内のエアーを液体導入路を通じて外部液体タンク
に逃がすエアー抜孔を穿設したことを特徴とす
る。 That is, an impeller having a large number of blades on a peripheral wall is housed in a casing, and the impeller is connected to the output shaft of a forward/reverse motor, and the impeller rotates between the inner wall of the casing and the impeller. Forms a working passage that sends out liquid by pumping action,
In the casing, two valve chambers, each communicating with the working passage, are separated by a partition wall and are provided adjacent to each other, and a liquid introduction path for introducing liquid from an external liquid tank is provided in the partition wall, and the liquid introduction path is provided in the partition wall. Suction ports communicating with both the valve chambers are opened in the partition wall, discharge ports are opened in the walls of both the valve chambers at positions facing each of the suction ports, and the partition walls are movably inserted through the partition walls so that both ends thereof are opened. is provided with a valve stem that can protrude into each of the valve chambers, and at both ends of the valve stem, when the valve stem moves, the suction port of one valve chamber is opened, and when the discharge port of the other valve chamber is closed, a valve stem is provided at both ends of the valve stem. A valve body is fixedly installed to close the inlet port and open the discharge port of the valve chamber, and the casing and the liquid introduction path are communicated with a part of the inner wall of the casing other than the partition wall, and the air in the casing is connected to the liquid inlet. It is characterized by having an air vent hole that allows air to escape to the external liquid tank through the introduction path.
(作用) 次に作用について説明する。(effect) Next, the effect will be explained.
第2図に示すように、羽根車40が反時針回転
方向に回転されると、弁室46が負圧になり、一
方弁室47側は正圧となる。これにより弁体5
4,55は第2図において左方に移動し、弁体5
4は吸入口50を開、吐出口52を閉とし、弁体
55は吸入口51を閉、吐出口53を開とする。
したがつて液体は液体導入路49、吸入口50、
弁室46、作用通路44、弁室47へと流れ、吐
出口53から必要個所に送出される。羽根車40
が第3図のごとく時針回転方向に回転されると液
体は逆に吐出口52からもう一方の必要個所に送
出される。 As shown in FIG. 2, when the impeller 40 is rotated in the counterclockwise direction, the pressure in the valve chamber 46 becomes negative, while the pressure in the valve chamber 47 becomes positive. As a result, the valve body 5
4 and 55 move to the left in FIG.
4 opens the suction port 50 and closes the discharge port 52, and the valve body 55 closes the suction port 51 and opens the discharge port 53.
Therefore, the liquid flows through the liquid introduction path 49, the suction port 50,
It flows into the valve chamber 46, the working passage 44, and the valve chamber 47, and is delivered to the required location from the discharge port 53. impeller 40
When the liquid is rotated in the direction of rotation of the hour hand as shown in FIG. 3, the liquid is sent out from the discharge port 52 to the other required location.
本発明においては、液体導入路49、一方の弁
室、作用通路44、他方の弁室がこの順に直列関
係にあるから、液体導入路49に対して一方の弁
室が必ず負圧となり、他方の弁室が必ず正圧とな
り、負圧となる側の弁室に開口する吐出口に誤つ
て液体が送出されることはなく、必要個所に液体
を正確に選択して送出しうる。 In the present invention, since the liquid introduction passage 49, one valve chamber, the working passage 44, and the other valve chamber are connected in series in this order, one valve chamber always has a negative pressure with respect to the liquid introduction passage 49, and the other valve chamber always has a negative pressure. The valve chamber of the valve chamber always has a positive pressure, and the liquid is not erroneously delivered to the discharge port opening into the valve chamber on the side where the pressure is negative, and the liquid can be accurately selected and delivered to the required location.
また第4図に明らかなごとく、ハウジング16
内のエアーはエアー抜孔63、液体導入路49を
通じて外部タンク60に逃げる。したがつてハウ
ジング16内にエアーが滞留することがなく、ポ
ンプ機能が最大限に発揮される。 Also, as shown in FIG. 4, the housing 16
The air inside escapes to the external tank 60 through the air vent hole 63 and the liquid introduction path 49. Therefore, air does not remain in the housing 16, and the pump function is maximized.
(実施例)
以下には本発明を具体化した好適な実施例を添
付図面に基づいて詳細に説明する。(Example) Hereinafter, preferred embodiments embodying the present invention will be described in detail based on the accompanying drawings.
まず本発明における基本的なポンプの構成を第
1図乃至第3図に示す。 First, the basic configuration of the pump according to the present invention is shown in FIGS. 1 to 3.
第1図において、40は周面に多数の溝41が
形成された円板状の羽根車であり、ケーシング4
2内に軸43を中心として回転自在に設けられて
いる。羽根車40の周側とケーシング42内壁と
の間で、羽根車40が回転することによりポンプ
作用を呈する作用通路44を形成している。 In FIG. 1, 40 is a disk-shaped impeller with a large number of grooves 41 formed on its circumferential surface, and a casing 4
2 so as to be rotatable around a shaft 43. A working passage 44 is formed between the circumferential side of the impeller 40 and the inner wall of the casing 42, which exhibits a pumping action when the impeller 40 rotates.
該作用通路44は羽根車の周側の8割程度にま
で及ぶよう設定するのが好適である(第1図にお
いては5割程度で示している)。 It is preferable that the working passage 44 is set so as to cover about 80% of the circumference of the impeller (about 50% is shown in FIG. 1).
なお羽根車40は第4図に示すごとく正逆モー
タ45の出力軸43に固定されている。 Note that the impeller 40 is fixed to an output shaft 43 of a forward/reverse motor 45 as shown in FIG.
次に、46は前記作用通路44の一端側に連通
する弁室である。また47も弁室であり、作用通
路44の他端側に連通している。両弁室46,4
7は互いに隣接位置して、隔壁48で仕切られて
いる。また隔壁48内には液体導入路49が形成
され、該液体導入路49は、吸入口50によつて
弁室46に連通し、また吸入口51によつて弁室
47にも連通している。液体導入路49は適宜な
接続パイプ(図示せず)によつて液体タンクに接
続される。 Next, 46 is a valve chamber communicating with one end side of the working passage 44. Further, 47 is a valve chamber, which communicates with the other end of the working passage 44 . Both valve chambers 46, 4
7 are located adjacent to each other and partitioned by a partition wall 48. Further, a liquid introduction passage 49 is formed in the partition wall 48 , and the liquid introduction passage 49 communicates with the valve chamber 46 through an inlet 50 and also with the valve chamber 47 through an inlet 51 . . The liquid introduction path 49 is connected to the liquid tank by a suitable connecting pipe (not shown).
52は吐出口であり、弁室46の吸入口50に
対向する壁面に開口している。また53も吐出口
であり、弁室47の吸入口51に対向する壁面に
開口している。なお両吐出口52,53の開口面
積は、液体導入路49、および両吸入口50,5
1の開口面積よりも小さく設定されている。 Reference numeral 52 denotes a discharge port, which opens in the wall surface of the valve chamber 46 facing the suction port 50 . Further, 53 is also a discharge port, which opens in the wall surface of the valve chamber 47 facing the suction port 51 . Note that the opening area of both discharge ports 52 and 53 is the same as that of liquid introduction path 49 and both suction ports 50 and 5.
It is set smaller than the opening area of No. 1.
次に、54は弁体であり、弁室46の吸入口5
0と吐出口52とを開閉する。55も弁体であ
り、弁室47の吸入口51と吐出口53とを開閉
する。両弁体54,55は、液体導入路49、両
吸入口50,51内で適宜部材で摺動自在に支持
された弁棒56の両端に固定されている。そし
て、弁棒56が移動することによつて、一方の弁
体が弁室の吸入口を閉塞し、吐出口を開放すると
きは、他方の弁体が弁室の吸入口を開放して吐出
口を閉塞する関係にあるように設定されている。 Next, 54 is a valve body, and the inlet 5 of the valve chamber 46
0 and the discharge port 52 are opened and closed. 55 is also a valve body, which opens and closes the suction port 51 and the discharge port 53 of the valve chamber 47. Both valve bodies 54 and 55 are fixed to both ends of a valve rod 56 that is slidably supported within the liquid introduction path 49 and both suction ports 50 and 51 by appropriate members. When the valve stem 56 moves and one valve element closes the inlet of the valve chamber and opens the outlet, the other valve element opens the inlet of the valve chamber and discharges. It is set in such a way that it blocks the exit.
第4図および第5図は上記選択型送出ポンプの
実装例を示し、前記と同一の部材は同一符号を用
いてある。 FIGS. 4 and 5 show an implementation example of the selective delivery pump described above, and the same members as described above are designated by the same reference numerals.
この実施例においては、前記の弁棒56を断面
十字形に設けて、弁棒56が十字部分の外縁で吸
入口50,51内壁に摺接し、液体は十字部分の
空隙を通して作用通路方向に流入するようになつ
ている。そして液体導入路49はケーシング16
の背後に延長され、外部液体タンク60への接続
口61に連続している。ケーシング16と液体導
入路49との間の隔壁62にエアー抜孔63が設
けられている。したがつてケーシング16内のエ
アーは、エアー抜孔63、液体導入路49を通し
て外部液体タンク60側に逃げ、さらに大気中に
逃げる。 In this embodiment, the valve stem 56 is provided with a cross-shaped cross section, and the valve stem 56 slides against the inner walls of the suction ports 50 and 51 at the outer edge of the cross section, and the liquid flows in the direction of the working passage through the gap in the cross section. I'm starting to do that. The liquid introduction path 49 is connected to the casing 16.
and is continuous with a connection port 61 to an external liquid tank 60. An air vent hole 63 is provided in the partition wall 62 between the casing 16 and the liquid introduction path 49. Therefore, the air in the casing 16 escapes to the external liquid tank 60 side through the air vent hole 63 and the liquid introduction path 49, and further escapes into the atmosphere.
続いて本発明装置の動作について説明する。 Next, the operation of the device of the present invention will be explained.
羽根車40静止時には弁体54,55の位置が
定まらず、フリー状態にある(第1図)。 When the impeller 40 is stationary, the positions of the valve bodies 54 and 55 are not determined and are in a free state (FIG. 1).
この状態で羽根車40が矢A方向(第2図)に
回転すると、弁室46内は負圧となり弁室47は
正圧となる。したがつて羽根車40が回転され始
めると、液体は吸入口50から負圧状態の弁室4
6内へ流入し、また弁室47内においては液体が
弁体55の背後側(吐出口53側)にも回り込
む。これにより弁体55の両面には略同一の流体
圧が作用し、一方弁体54の両面に対しては、羽
根車40が回転を継続することによつて吐出口5
2側は負圧、吸入口50側は正圧となるから、両
弁体54,55には全体として矢C方向の押圧力
が作用して移動される。そして弁体54は吸入口
50を完全に開放すると共に吐出口52を閉塞
し、弁体55は吸入口51を閉塞すると共に吐出
口53を完全に開放する(第2図)。したがつて
液体は作用通路44におけるポンプ作用により吐
出口53から図示しないパイプ等によつて必要個
所へ供給される。 When the impeller 40 rotates in the direction of arrow A (FIG. 2) in this state, the pressure in the valve chamber 46 becomes negative and the pressure in the valve chamber 47 becomes positive. Therefore, when the impeller 40 begins to rotate, the liquid flows from the suction port 50 into the valve chamber 4 under negative pressure.
In the valve chamber 47, the liquid also flows to the rear side of the valve body 55 (discharge port 53 side). As a result, substantially the same fluid pressure acts on both sides of the valve body 55, and on the other hand, as the impeller 40 continues to rotate, substantially the same fluid pressure acts on both sides of the valve body 54.
Since the pressure on the 2 side is negative and the pressure on the suction port 50 side is positive, a pressing force in the direction of arrow C acts on both valve bodies 54 and 55 as a whole, causing them to move. The valve body 54 completely opens the suction port 50 and closes the discharge port 52, and the valve body 55 closes the suction port 51 and completely opens the discharge port 53 (FIG. 2). Therefore, the liquid is supplied to the required location from the discharge port 53 by the pump action in the working passage 44 through a pipe or the like (not shown).
なお上記動作は瞬間的に行われるが、この間に
おいて負圧となる弁室46内に吐出口52から液
体が多少流入することはあるが、従来のように吐
出口52側に液体が送出させてしまうことは起り
得ない。したがつて弁体54による吐出口52の
シールが多少不完全であつても、液体が吐出口5
2側に送出されることはなくなる。また弁体55
による吸入口51のシールが不完全であつても、
吐出口53への液体の送出量が僅少減るだけで大
きな不都合はない。 Note that the above operation is performed instantaneously, and during this time some liquid may flow into the valve chamber 46 from the discharge port 52, which is under negative pressure, but the liquid is not sent to the discharge port 52 side as in the conventional case. It can't happen. Therefore, even if the sealing of the discharge port 52 by the valve body 54 is somewhat incomplete, the liquid will still flow through the discharge port 5.
It will no longer be sent to the 2nd side. Also, the valve body 55
Even if the seal of the inlet 51 is incomplete,
There is no major inconvenience as long as the amount of liquid sent to the discharge port 53 is slightly reduced.
第3図は羽根車40を時針回転方向に回転した
状態を示す。この場合には前記と同様に作用して
両弁体54,55が前記と逆方向に移動し、吸入
口51および吐出口52が開放されて、液体な吐
出口52から適宜なパイプ等により、別の必要個
所に送出される。 FIG. 3 shows a state in which the impeller 40 is rotated in the direction of rotation of the hour hand. In this case, the valve bodies 54 and 55 move in the opposite direction as described above, the suction port 51 and the discharge port 52 are opened, and the liquid is discharged from the liquid discharge port 52 by an appropriate pipe or the like. Sent to another required location.
ケーシング16内のエアーは、ケーシング16
内に液体が導入されて液体により押されること、
またエアー自身の浮力によつて、エアー抜孔6
3、液体導入路49、外部液体タンク60から大
気中に放出される。 The air inside the casing 16
introducing a liquid into and being pushed by the liquid;
Also, due to the buoyancy of the air itself, the air vent hole 6
3. The liquid is released into the atmosphere from the liquid introduction path 49 and the external liquid tank 60.
なお、ポンプ作用路内にエアー抜孔63を設け
たことにより、当然ポンプ機能の低下が考えられ
る。しかし実験してみたところ、第6図のポンプ
圧と流量との関係を示すグラフにみられるよう
に、エアー抜孔を設けない場合に比べて、最高圧
力の低下はあるが、低下側ではエアー抜孔63が
吸入口としても作用するので、エアー抜孔を設け
ない場合よりも逆に流量の増加が見られ、ウオツ
シヤポンプとしては実用上好ましい結果が得られ
た。 Note that, by providing the air vent hole 63 in the pump action path, it is naturally possible that the pump function will be degraded. However, when we experimented, we found that, as seen in the graph showing the relationship between pump pressure and flow rate in Figure 6, the maximum pressure decreased compared to the case without air vent holes, but on the lower side, the air vent holes 63 also acts as a suction port, an increase in flow rate was observed compared to the case where no air vent hole was provided, and a practically preferable result was obtained as a washer pump.
第7図は他の実施例を示す。 FIG. 7 shows another embodiment.
本実施例においては、両吐出口52,53に両
弁室46,47への液体の逆流を防止する逆止弁
57,58をそれぞれ設けている他は上記実施例
と同じである。 This embodiment is the same as the embodiment described above, except that check valves 57 and 58 for preventing liquid from flowing back into the valve chambers 46 and 47 are provided at both discharge ports 52 and 53, respectively.
このように逆止弁57,58を設けたことによ
つて、前述した、羽根車40の回転始動時におけ
る吐出口から弁室への液体の逆流を防止できる。
またこの逆流が防止できることによつて、羽根車
40の回転方向を切換えた際瞬時に液体を所望個
所に送出しうる。逆流して吐出方向側のパイプ内
に空間が生じていればそれだけ送出が後れるから
である。 By providing the check valves 57 and 58 in this manner, it is possible to prevent the liquid from flowing back from the discharge port to the valve chamber when the impeller 40 starts rotating as described above.
Furthermore, since this backflow can be prevented, the liquid can be instantly delivered to a desired location when the rotation direction of the impeller 40 is changed. This is because if a space is created in the pipe on the discharge direction side due to the reverse flow, the delivery will be delayed accordingly.
なお前記の正逆モータ45は電気、油圧、その
他任意の駆動源を用いることができることはもち
ろんである。 It goes without saying that the forward/reverse motor 45 described above may be powered by electricity, hydraulic pressure, or any other drive source.
(発明の効果)
以上のように本発明に係る選択型送出ポンプに
よれば、吸入側である液体導入路に対して一方の
弁室が必ず負圧、他方の弁室が必ず正圧となる関
係になるので、異物の介在等によつて弁体でのシ
ールが不完全であつても遮断すべき吐出口の液体
を誤つて送出してしまうことがなく、必要個所に
液体を選択的に、かつ正確に送出しうる。(Effects of the Invention) As described above, according to the selective delivery pump according to the present invention, one valve chamber always has negative pressure and the other valve chamber always has positive pressure with respect to the liquid introduction path on the suction side. Therefore, even if the seal at the valve body is incomplete due to the presence of foreign matter, the liquid that should be blocked will not be accidentally sent out from the discharge port, and the liquid will be selectively delivered to the required location. , and can be sent accurately.
また円周流ポンプ型の簡単なポンプ構造を採用
しうると共に、弁体もそれ程の精度を要求されな
いから、故障も少なく、不定期に作動される自動
車窓洗浄用のウオツシヤ液送出ポンプ等に好適に
用いることができる。 In addition, it is possible to adopt a simple pump structure of the circumferential flow pump type, and the valve body does not require high precision, so it is less likely to break down and is suitable for use as a washer fluid delivery pump for car window cleaning that is operated irregularly. It can be used for.
また吐出口の逆止弁を設ければ、弁室への液体
の逆流を防止でき、液体送出タイムラグを好適に
防止しうると共に、弁室がより気密状態となつて
ポンプ作用をより効果的になさしめることができ
る。 In addition, by providing a check valve at the discharge port, it is possible to prevent the liquid from flowing back into the valve chamber, effectively preventing the liquid delivery time lag, and making the valve chamber more airtight, making the pump action more effective. I can reprimand you.
さらには、ケーシング内にエアが滞留すること
がなく、ポンプ機能を最大限に発揮でき、また低
圧側では流量を増加させることができるという著
効を奏する。 Furthermore, air does not remain in the casing, and the pump function can be maximized, and the flow rate can be increased on the low pressure side.
以上本発明につき好適な実施例を挙げて種々説
明したが、本発明なこの実施例に限定されるもの
ではなく、発明の精神を逸脱しない範囲内で多く
の改変を施し得るのはもちろんのことである。 Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.
第1図は本発明に係るホンプの一実施例を示す
断面図、第2図は同ポンプの羽根車が反時針回転
方向に回転した際の、第3図は時針回転方向に回
転した際の動作状態を示す断面図である。第4図
は実装例を示す断面図、第5図はハウジング内を
示す平面図、第6図はポンプ圧と液体の流量との
関係を示すグラフである。第7図は他の実施例を
示す断面図である。第8図は従来のポンプの断面
図、第9図はその−線断面図を示す。
10……ポンプ、12……正逆モータ、14…
…羽根車、16……ハウジング、18……弾性
膜、20,22……マニホールド室、24,26
……接線方向導管、28,30……吐出孔、32
……軸方向孔、40……羽根車、42……ケーシ
ング、43……軸、44……作用通路、45……
正逆モータ、46……弁室、47……弁室、48
……隔壁、49……液体導入路、50……吸入
口、51……吸入口、52……吐出口、53……
吐出口、54,55……弁体、56……弁棒、5
7,58……逆止弁、60……外部液体タンク、
61……接続口、62……隔壁、63……エアー
抜孔。
Fig. 1 is a sectional view showing an embodiment of the pump according to the present invention, Fig. 2 shows the impeller of the same pump when it rotates in the counter-hour hand rotation direction, and Fig. 3 shows the case when the pump impeller rotates in the hour hand rotation direction. FIG. 3 is a sectional view showing an operating state. FIG. 4 is a sectional view showing an example of implementation, FIG. 5 is a plan view showing the inside of the housing, and FIG. 6 is a graph showing the relationship between pump pressure and liquid flow rate. FIG. 7 is a sectional view showing another embodiment. FIG. 8 is a cross-sectional view of a conventional pump, and FIG. 9 is a cross-sectional view taken along the - line. 10...pump, 12...forward/reverse motor, 14...
... Impeller, 16 ... Housing, 18 ... Elastic membrane, 20, 22 ... Manifold chamber, 24, 26
...Tangential conduit, 28, 30...Discharge hole, 32
... Axial hole, 40 ... Impeller, 42 ... Casing, 43 ... Shaft, 44 ... Working passage, 45 ...
Forward/reverse motor, 46... Valve chamber, 47... Valve chamber, 48
...Partition wall, 49...Liquid introduction path, 50...Suction port, 51...Suction port, 52...Discharge port, 53...
Discharge port, 54, 55... Valve body, 56... Valve stem, 5
7, 58...Check valve, 60...External liquid tank,
61... Connection port, 62... Partition wall, 63... Air vent hole.
Claims (1)
根車を収納すると共に該羽根車を正逆モータの出
力軸に連結し、 前記ケーシング内壁と羽根車との間に、羽根車
が回転することによるポンプ作用により液体を送
出する作用通路を形成し、 前記ケーシング内に、それぞれ前記作用通路に
連通する2つの弁室を隔壁で仕切つて隣接して設
け、 該隔壁内に外部液体タンクからの液体を導入す
る液体導入路を設け、 該液体導入路を前記両弁室に連通する吸入口を
前記隔壁にそれぞれ開口し、 前記両弁室内内壁に、前記各吸入口と対向する
位置に吐出口をそれぞれ開口し、 前記隔壁を移動自在に挿通して両端が各前記弁
室内に突出可能な弁棒を設けると共に、この弁棒
の両端に、弁棒が移動した際に、一方の弁室の前
記吸入口を開、吐出口を閉とするとき他方の弁室
の前記吸入口を閉、吐出口を開となす弁体をそれ
ぞれ固設し、前記ケーシング内壁で前記隔壁以外
の個所に、ケーシングと前記液体導入路を連通さ
せ、ケーシング内のエアーを液体導入路を通じて
外部液体タンクに逃がすエアー抜孔を穿設したこ
とを特徴とする選択型送出ポンプ。 2 前記両吐出口に、各弁室内への液体の逆流を
防止すべく逆止弁をそれぞれ設けて成る特許請求
の範囲第1項記載の選択型送出ポンプ。[Claims] 1. An impeller having a large number of blades on a peripheral wall is housed in a casing, and the impeller is connected to an output shaft of a forward/reverse motor, and the impeller is disposed between the inner wall of the casing and the impeller. A working passage is formed through which liquid is delivered by a pump action caused by the rotation of the casing, and two valve chambers, each communicating with the working passage, are provided in the casing and separated by a partition and adjacent to each other, and an external liquid is disposed within the partition. A liquid introduction path for introducing liquid from the tank is provided, suction ports communicating the liquid introduction path with both the valve chambers are opened in the partition wall, and positions are provided on the inner walls of the valve chambers at positions opposite to the respective suction ports. A discharge port is opened at each of the valve chambers, and a valve rod is provided which is movably inserted through the partition wall so that both ends thereof can protrude into each of the valve chambers, and at both ends of the valve rod, when the valve rod moves, one of the valve rods is provided. When the inlet of the valve chamber is opened and the outlet of the other valve chamber is closed, a valve body is fixedly installed to close the inlet of the other valve chamber and open the outlet of the other valve chamber, and a part of the inner wall of the casing other than the partition wall is provided. A selective delivery pump characterized in that the casing and the liquid introduction path are communicated with each other, and an air vent hole is formed to allow air in the casing to escape to an external liquid tank through the liquid introduction path. 2. The selective delivery pump according to claim 1, wherein each of the discharge ports is provided with a check valve to prevent backflow of liquid into each valve chamber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62071222A JPS63239395A (en) | 1987-03-25 | 1987-03-25 | Selection type delivery pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62071222A JPS63239395A (en) | 1987-03-25 | 1987-03-25 | Selection type delivery pump |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63239395A JPS63239395A (en) | 1988-10-05 |
JPH05559B2 true JPH05559B2 (en) | 1993-01-06 |
Family
ID=13454432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62071222A Granted JPS63239395A (en) | 1987-03-25 | 1987-03-25 | Selection type delivery pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63239395A (en) |
-
1987
- 1987-03-25 JP JP62071222A patent/JPS63239395A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS63239395A (en) | 1988-10-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0467039B2 (en) | ||
KR20130114669A (en) | Fluid distribution valve, fluid supply system comprising same, and method for controlling the fluid supply system | |
GB2369071A (en) | Pump device | |
US3730217A (en) | Check valve | |
US5795476A (en) | Water treatment apparatus | |
US4919591A (en) | Washer pump for automobiles | |
CN202468462U (en) | Improved two-way pump | |
JPH05559B2 (en) | ||
EP0355260B1 (en) | Screw type vacuum pump | |
JPH02264192A (en) | Reversible turbine pump | |
US5993151A (en) | Centrifugal pump device | |
GB2064002A (en) | Liquid Ring Vacuum Pumps | |
US3862747A (en) | Additive diffusor | |
JPH04500489A (en) | Two-way water pump for car windshield cleaning system | |
JPH05560B2 (en) | ||
JP3586392B2 (en) | Fire pump | |
JPH06249179A (en) | Impeller pump | |
KR960016040B1 (en) | Pump | |
KR200229494Y1 (en) | Centrifugal pump | |
JPS62244741A (en) | Washer liquid feeder for automobile | |
JPH09112459A (en) | Pump | |
JPH059972Y2 (en) | ||
JPH01116299A (en) | Selective delivery pump | |
JP2004224214A (en) | Washer pump | |
JPH01121596A (en) | Circular flow type pump |