JP2019136648A - Cleaning liquid generator - Google Patents

Cleaning liquid generator Download PDF

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JP2019136648A
JP2019136648A JP2018021762A JP2018021762A JP2019136648A JP 2019136648 A JP2019136648 A JP 2019136648A JP 2018021762 A JP2018021762 A JP 2018021762A JP 2018021762 A JP2018021762 A JP 2018021762A JP 2019136648 A JP2019136648 A JP 2019136648A
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suction port
cleaning liquid
axial direction
detergent
parting line
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JP7000191B2 (en
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雄 岡野
Yu Okano
雄 岡野
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Rinnai Corp
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Rinnai Corp
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Abstract

To provide a cleaning liquid generator which generates a cleaning liquid by mixing a detergent with water, which has a first flow passage 2 extending in an axial direction where water flows, a venturi part 3 being disposed at the intermediate part of the first flow passage 2 and having the smallest cross sectional area of the flow passage, a suction port 4 formed at the peripheral wall part 31 of the venturi part 3 and a second flow passage 5 communicating with the suction port 4 where the detergent flows in a cylindrical synthetic resin body 1 and where a projection 32 swelling inward in a radial direction is disposed at the part of the peripheral wall part 31 of the venturi part 3 and variation in the mixing ratio of the detergent by the influence of a parting line being the dividing line of a core mold forming the first flow passage 2 in an axial direction can be suppressed when the suction port 4 is formed to be open at the projection 32.SOLUTION: In a cleaning liquid generator, a parting line 6 exists at a position apart from the opening place of the suction port 4 of a projection 32 in an axial direction and preferably, at a position apart from the opening place of the suction port 4 at a downstream side in a water flow direction.SELECTED DRAWING: Figure 2

Description

本発明は、浴槽洗浄装置等で使用される、水に洗剤を混合して洗浄液を生成する洗浄液生成器に関する。   The present invention relates to a cleaning liquid generator that is used in a bath cleaning apparatus or the like and generates a cleaning liquid by mixing detergent with water.

従来、この種の洗浄液生成器として、特許文献１により、合成樹脂製の筒状の器体内に、軸方向にのびる、水が流れる第１流路と、第１流路の途中に設けられた、流路断面積が最小となるベンチュリー部と、ベンチュリー部の周壁部に開設された吸込み口と、吸込み口に連通する、洗剤が流れる第２流路とを備え、ベンチュリー部で発生する負圧により吸込み口から洗剤を吸い込み、水に洗剤を混合して洗浄液を生成するものが知られている。   Conventionally, as a cleaning liquid generator of this type, according to Patent Document 1, a cylindrical body made of synthetic resin is provided in the middle of a first flow path extending in the axial direction and flowing in the first flow path. A negative pressure generated in the venturi section, comprising a venturi section having a minimum flow path cross-sectional area, a suction port established in a peripheral wall portion of the venturi section, and a second flow path communicating with the suction port and through which the detergent flows. It is known that a detergent is sucked from a suction port and a detergent is mixed with water to generate a cleaning liquid.

また、このような洗浄液生成器において、ベンチュリー部の周壁部の一部に、径方向内方に盛り上がる凸部を設けて、この凸部に開口するように吸込み口を形成することも考えられている。この場合、凸部は、一般的に、径方向内方に半球状に盛り上がるように形成され、この凸部の中心部に開口するように吸込み口が形成される。   Further, in such a cleaning liquid generator, it is also conceivable that a convex portion that swells radially inward is provided on a part of the peripheral wall portion of the venturi portion, and a suction port is formed so as to open to the convex portion. Yes. In this case, the convex portion is generally formed so as to rise hemispherically inward in the radial direction, and the suction port is formed so as to open at the central portion of the convex portion.

ここで、凸部が半球状に形成される場合、軸方向に直交し凸部の中心を通る仮想面を中立面として、中立面より軸方向一方側に位置する凸部の半部の形状は、軸方向他方から見てアンダーカット形状（軸方向他方に成形金型を抜く際に成形金型が引っかかる形状）となり、中立面より軸方向他方側に位置する凸部の半部の形状は、軸方向一方から見てアンダーカット形状になる。そのため、第１流路を成形する中子金型は、中立面で軸方向に分割せざるを得なくなる。従って、中子金型の軸方向の分割ラインであるパーティングラインは、中立面に合致し、凸部の中心部に開口する吸込み口の周縁に交差する。その結果、吸込み口の周縁のパーティングラインとの交差部で水流が乱れ、洗剤の混合比率がバラツキやすくなってしまう。   Here, when the convex portion is formed in a hemispherical shape, a virtual plane orthogonal to the axial direction and passing through the center of the convex portion is defined as a neutral surface, and the half of the convex portion located on one side in the axial direction from the neutral surface The shape is an undercut shape when viewed from the other side in the axial direction (a shape in which the molding die is caught when the molding die is pulled in the other side in the axial direction), and the half of the convex portion located on the other side in the axial direction from the neutral surface The shape is an undercut shape when viewed from one axial direction. Therefore, the core mold for forming the first flow path must be divided in the axial direction at the neutral plane. Therefore, the parting line, which is a dividing line in the axial direction of the core mold, coincides with the neutral plane and intersects the peripheral edge of the suction port that opens at the center of the convex portion. As a result, the water flow is disturbed at the intersection of the peripheral edge of the suction port with the parting line, and the mixing ratio of the detergent tends to vary.

特開２００７−１１７１６３号公報（段落００２９、図２）JP 2007-117163 A (paragraph 0029, FIG. 2)

本発明は、以上の点に鑑み、洗剤の混合比率のバラツキを抑制できるようにした洗浄液生成器を提供することをその課題としている。   This invention makes it the subject to provide the washing | cleaning liquid generator which enabled it to suppress the dispersion | variation in the mixing ratio of a detergent in view of the above point.

上記課題を解決するために、本発明は、水に洗剤を混合して洗浄液を生成する洗浄液生成器であって、合成樹脂製の筒状の器体内に、軸方向にのびる、水が流れる第１流路と、第１流路の途中に設けられた、流路断面積が最小となるベンチュリー部と、ベンチュリー部の周壁部に開設された吸込み口と、吸込み口に連通する、洗剤が流れる第２流路とを備え、ベンチュリー部の周壁部の一部に、径方向内方に盛り上がる凸部が設けられ、この凸部に開口するように吸込み口が形成されるものにおいて、第１流路を成形する中子金型の軸方向の分割ラインであるパーティングラインが、凸部の吸込み口の開口箇所から軸方向に離れた位置に存することを特徴とする。   In order to solve the above-described problems, the present invention provides a cleaning liquid generator that generates a cleaning liquid by mixing detergent with water, and the axially extending water flows through a cylindrical body made of synthetic resin. 1 channel, a venturi portion having a minimum channel cross-sectional area provided in the middle of the first channel, a suction port opened in the peripheral wall portion of the venturi portion, and a detergent communicating with the suction port flow A second flow path, and a convex portion that swells radially inward is provided on a part of the peripheral wall portion of the venturi portion, and a suction port is formed so as to open to the convex portion. The parting line, which is a dividing line in the axial direction of the core mold for forming the path, is located at a position away from the opening of the suction port of the convex portion in the axial direction.

本発明によれば、パーティングラインが吸込み口の周縁に交差しなくなる。そのため、吸込み口の周縁でのパーティングラインによる水流の乱れが抑制され、洗剤の混合比率のバラツキも抑制される。   According to the present invention, the parting line does not cross the peripheral edge of the suction port. Therefore, the disturbance of the water flow due to the parting line at the periphery of the suction port is suppressed, and variation in the mixing ratio of the detergent is also suppressed.

ところで、吸込み口の開口箇所から第１流路における水の流れ方向上流側に離れた位置にパーティングラインが存する場合は、パーティングラインで生ずる水流の乱れの影響が吸込み口に及ぶ可能性がある。従って、本発明において、パーティングラインは、吸込み口の開口箇所から第１流路における水の流れ方向下流側に離れた位置に存することが望ましい。これによれば、パーティングラインで生ずる水流の乱れの影響が吸込み口に及ぶことがなく、洗剤の混合比率のバラツキを一層効果的に抑制できる。   By the way, when the parting line exists in the position away from the opening location of the suction port upstream in the water flow direction in the first flow path, the influence of the turbulence of the water flow generated in the parting line may reach the suction port. is there. Therefore, in the present invention, it is desirable that the parting line is located at a position away from the opening of the suction port to the downstream side in the water flow direction in the first flow path. According to this, the influence of the disturbance of the water flow generated in the parting line does not reach the suction port, and the variation in the mixing ratio of the detergent can be more effectively suppressed.

本発明の第１実施形態の洗浄液生成器の斜視図。The perspective view of the washing | cleaning liquid generator of 1st Embodiment of this invention. 第１実施形態の洗浄液生成器の切断側面図。The cut side view of the washing | cleaning-liquid generator of 1st Embodiment. 図２のＩＩＩ−ＩＩＩ線で切断した要部の断面図。Sectional drawing of the principal part cut | disconnected by the III-III line | wire of FIG. 第２実施形態の洗浄液生成器の図３に相当する要部の断面図。Sectional drawing of the principal part corresponded in FIG. 3 of the washing | cleaning-liquid generator of 2nd Embodiment. 第３実施形態の洗浄液生成器の図３に相当する要部の断面図。Sectional drawing of the principal part corresponded in FIG. 3 of the washing | cleaning-liquid generator of 3rd Embodiment.

図１、図２を参照して、本発明の実施形態の洗浄液生成器は、ＰＰＳ等の合成樹脂製の筒状の器体１内に、軸方向一端の流入口２ａから軸方向他端の流出口２ｂに向けて軸方向にのびる、水が流れる第１流路２を備えている。更に、第１流路２の途中に設けられた、流路断面積が最小となるベンチュリー部３と、ベンチュリー部３の周壁部３１に開設された吸込み口４と、吸込み口４に連通する、洗剤が流れる第２流路５とを備えている。そして、ベンチュリー部３で発生する負圧により吸込み口４から洗剤が吸い込まれ、水に洗剤が混合されて洗浄液が生成されるようにしている。洗浄液は、流出口２ｂから流出して、浴槽洗浄用等の洗浄ノズルに供給される。   1 and 2, a cleaning liquid generator according to an embodiment of the present invention includes a cylindrical container 1 made of a synthetic resin such as PPS, and has an axial end at an inlet 2a at one end in the axial direction. A first flow path 2 in which water flows in the axial direction toward the outlet 2b is provided. Further, the venturi part 3 provided in the middle of the first flow path 2 and having the smallest flow path cross-sectional area, the suction port 4 opened in the peripheral wall part 31 of the venturi part 3, and the suction port 4 are communicated. And a second flow path 5 through which the detergent flows. Then, the detergent is sucked from the suction port 4 by the negative pressure generated in the venturi section 3, and the detergent is mixed with water to generate a cleaning liquid. The cleaning liquid flows out from the outlet 2b and is supplied to a cleaning nozzle for bath cleaning or the like.

ベンチュリー部３の周壁部３１の一部には、径方向内方に盛り上がる凸部３２が設けられており、この凸部３２に開口するように吸込み口４が形成されている。そして、第１流路２を成形する中子金型の軸方向の分割ラインであるパーティングライン６が、凸部３２の吸込み口４の開口箇所から軸方向に離れた位置に存するようにしている。   A part of the peripheral wall part 31 of the venturi part 3 is provided with a convex part 32 that rises inward in the radial direction, and a suction port 4 is formed so as to open to the convex part 32. Then, the parting line 6, which is an axial dividing line of the core mold for forming the first flow path 2, is located at a position away from the opening portion of the suction port 4 of the convex portion 32 in the axial direction. Yes.

図３を参照して具体的に説明すれば、軸方向に直交し吸込み口４の中心を通る仮想面を中立面Ｐ１として、第１流路２の中心軸線側から見た凸部３２の形状を以下の通りとしている。即ち、中立面Ｐ１より第１流路２における水の流れ方向上流側（図３の左側）に位置する凸部３２の部分の形状を、軸方向と直交方向の幅が水の流れ方向上流側に向かって次第に減少する半円状とし、中立面Ｐ１より水の流れ方向下流側に位置する凸部３２の部分の形状を、軸方向と直交方向の幅が一定の方形状としている。これによれば、中立面Ｐ１より水の流れ方向下流側に位置する凸部３２の部分に、水の流れ方向上流側から見てアンダーカット形状となる部分及び水の流れ方向下流側から見てアンダーカット形状となる部分が存在せず、パーティングライン６（中子金型の軸方向の分割ライン）を中立面Ｐ１と凸部３２の水の流れ方向下流側の端縁との間の任意の位置に存在させることができる。但し、軸方向に直交し吸込み口４の水の流れ方向下流側の端縁に接する仮想面Ｐ２と中立面Ｐ１との間にパーティングライン６が存在すると、吸込み口４の周縁にパーティングライン６が交差し、この交差部で水流が乱れ、洗剤の混合比率がバラツキやすくなってしまう。一方、上記仮想面Ｐ２と凸部３２の水の流れ方向下流側の端縁との間にパーティングライン６を存在させれば、パーティングライン６が吸込み口４の周縁に交差しなくなるため、吸込み口４の周縁でのパーティングライン６による水流の乱れが抑制され、洗剤の混合比率のバラツキも抑制される。本実施形態では、凸部３２の水の流れ方向下流側の端縁に合致する位置にパーティングライン６が存在している。   If it demonstrates concretely with reference to FIG. 3, the virtual surface orthogonal to an axial direction and passing through the center of the suction inlet 4 is made into the neutral surface P1, and the convex part 32 seen from the central-axis line side of the 1st flow path 2 is used. The shape is as follows. That is, the shape of the convex portion 32 located on the upstream side (left side in FIG. 3) in the water flow direction in the first flow path 2 from the neutral plane P1 has a width in the direction perpendicular to the axial direction upstream of the water flow direction. The shape of the convex portion 32 located downstream of the neutral plane P1 in the water flow direction is a square shape having a constant width in the direction perpendicular to the axial direction. According to this, the portion of the convex portion 32 located on the downstream side in the water flow direction from the neutral plane P1 has a portion that is an undercut shape when viewed from the upstream side in the water flow direction and the downstream side in the water flow direction. There is no part that becomes an undercut shape, and the parting line 6 (the dividing line in the axial direction of the core mold) is between the neutral surface P1 and the edge of the convex portion 32 on the downstream side in the water flow direction. It can exist in arbitrary positions. However, if there is a parting line 6 between the imaginary plane P2 and the neutral plane P1 that is orthogonal to the axial direction and is in contact with the edge of the suction port 4 on the downstream side in the water flow direction, the parting line is formed on the periphery of the suction port 4 The lines 6 intersect, the water flow is disturbed at the intersection, and the mixing ratio of the detergent tends to vary. On the other hand, if the parting line 6 exists between the virtual surface P2 and the edge of the convex portion 32 on the downstream side in the water flow direction, the parting line 6 does not intersect the peripheral edge of the suction port 4, The disturbance of the water flow by the parting line 6 at the periphery of the suction port 4 is suppressed, and the variation in the mixing ratio of the detergent is also suppressed. In this embodiment, the parting line 6 exists in the position which corresponds to the edge of the water flow direction downstream side of the convex part 32. FIG.

ところで、第１流路２の中心軸線側から見た凸部３２の形状を、図４に示す第２実施形態の如く、水の流れ方向両端に半円部、中間に方形部を有する長円状とし、凸部３２の方形部内に吸込み口４を開口させることも可能である。この場合、凸部３２の方形部の部分は、水の流れ方向上流側と下流側の何れの側から見てもアンダーカット形状となる部分が存在せず、パーティングライン６を方形部の任意の位置に存在させることができる。そして、吸込み口４の周縁にパーティングライン６が交差しないようにするには、軸方向に直交し方形部の水の流れ方向上流側の端を通る仮想面Ｐ３と軸方向に直交し吸込み口４の水の流れ方向上流側の端縁に接する仮想面Ｐ４との間、または、軸方向に直交し方形部の水の流れ方向下流側の端を通る仮想面Ｐ５と軸方向に直交し吸込み口４の水の流れ方向下流側の端縁に接する仮想面Ｐ６との間にパーティングライン６を存在させればよい。   By the way, the shape of the convex part 32 seen from the central axis side of the first flow path 2 is an ellipse having a semicircular part at both ends in the water flow direction and a rectangular part in the middle as in the second embodiment shown in FIG. It is also possible to open the suction port 4 in the rectangular part of the convex part 32. In this case, the portion of the rectangular portion of the convex portion 32 has no undercut shape when viewed from either the upstream side or the downstream side in the water flow direction, and the parting line 6 is an arbitrary portion of the rectangular portion. It can exist in the position. In order to prevent the parting line 6 from intersecting the peripheral edge of the suction port 4, the suction port is orthogonal to the imaginary plane P <b> 3 passing through the upstream end of the rectangular portion in the water flow direction and orthogonal to the axial direction. 4 between the imaginary plane P4 in contact with the edge on the upstream side in the water flow direction or the imaginary plane P5 passing through the end on the downstream side in the water flow direction of the rectangular portion perpendicular to the axial direction and perpendicular to the axial direction. The parting line 6 should just exist between the virtual surface P6 which contact | connects the edge of the water flow direction downstream side of the opening | mouth 4 in contact.

但し、パーティングライン６を仮想面Ｐ３と仮想面Ｐ４との間、即ち、吸込み口４の開口箇所から水の流れ方向上流側に離れた位置に存在させると、パーティングライン６で生ずる水流の乱れの影響が吸込み口４に及んで、洗剤の混合比率が若干ばらつく可能性がある。そこで、図４に示す第２実施形態では、パーティングライン６を仮想面Ｐ５と仮想面Ｐ６との間、即ち、吸込み口４の開口箇所から水の流れ方向下流側に離れた位置に存在させている。これによれば、パーティングライン６で生ずる水流の乱れの影響が吸込み口４に及ぶことがなく、洗剤の混合比率のバラツキを一層効果的に抑制できる。尚、図３に示す第１実施形態のものでも、パーティングライン６は、吸込み口４の開口箇所から水の流れ方向下流側に離れた位置に存在することになる。   However, if the parting line 6 exists between the imaginary plane P3 and the imaginary plane P4, that is, at a position away from the opening of the suction port 4 on the upstream side in the water flow direction, the flow of water generated in the parting line 6 is reduced. The influence of the turbulence may reach the suction port 4 and the mixing ratio of the detergent may vary slightly. Therefore, in the second embodiment shown in FIG. 4, the parting line 6 is located between the virtual plane P5 and the virtual plane P6, that is, at a position away from the opening of the suction port 4 on the downstream side in the water flow direction. ing. According to this, the influence of the turbulence of the water flow generated in the parting line 6 does not reach the suction port 4, and the variation in the mixing ratio of the detergent can be more effectively suppressed. In the first embodiment shown in FIG. 3 as well, the parting line 6 exists at a position away from the opening of the suction port 4 on the downstream side in the water flow direction.

また、第１流路２の中心軸線側から見た凸部３２の形状を、図５に示す第３実施形態の如く、軸方向と直交方向の幅が水の流れ方向上流側の端から下流側の端に亘って次第に増加する形状としてもよい。この場合、水の流れ方向下流側から見て凸部３２全体がアンダーカット形状となるため、パーティングライン６は、凸部３２の水の流れ方向下流側の端縁に合致する位置に存在させる必要がある。その結果、吸込み口４の開口箇所から水の流れ方向下流側に離れた位置にパーティングライン６が存在することになる。   Moreover, the shape of the convex part 32 seen from the central axis line side of the first flow path 2 is such that the width in the direction orthogonal to the axial direction is downstream from the upstream end in the water flow direction as in the third embodiment shown in FIG. It is good also as a shape which increases gradually over the edge of the side. In this case, since the entire convex portion 32 is undercut when viewed from the downstream side in the water flow direction, the parting line 6 is present at a position that matches the edge of the convex portion 32 on the downstream side in the water flow direction. There is a need. As a result, the parting line 6 exists at a position away from the opening of the suction port 4 on the downstream side in the water flow direction.

以上、本発明の実施形態について図面を参照して説明したが、本発明はこれに限定されない。例えば、上記実施形態では、第２流路５をその軸線が第１流路２の軸線に直交するように形成しているが、第２流路５の軸線が第２流路２の軸線に斜交するようにしてもよい。   As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above embodiment, the second flow path 5 is formed so that its axis is orthogonal to the axis of the first flow path 2, but the axis of the second flow path 5 is the axis of the second flow path 2. You may make it cross.

１…器体、２…第１流路、３…ベンチュリー部、３１…周壁部、３２…凸部、４…吸込み口、５…第２流路、６…パーティングライン。
DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... 1st flow path, 3 ... Venturi part, 31 ... Perimeter wall part, 32 ... Convex part, 4 ... Suction port, 5 ... 2nd flow path, 6 ... Parting line.

Claims (2)

水に洗剤を混合して洗浄液を生成する洗浄液生成器であって、合成樹脂製の筒状の器体内に、軸方向にのびる、水が流れる第１流路と、第１流路の途中に設けられた、流路断面積が最小となるベンチュリー部と、ベンチュリー部の周壁部に開設された吸込み口と、吸込み口に連通する、洗剤が流れる第２流路とを備え、ベンチュリー部の周壁部の一部に、径方向内方に盛り上がる凸部が設けられ、この凸部に開口するように吸込み口が形成されるものにおいて、
第１流路を成形する中子金型の軸方向の分割ラインであるパーティングラインが、凸部の吸込み口の開口箇所から軸方向に離れた位置に存することを特徴とする洗浄液生成器。 A cleaning liquid generator for generating a cleaning liquid by mixing a detergent with water, and extending in the axial direction into a cylindrical container made of synthetic resin, and in the middle of the first flow path A venturi portion having a minimum cross-sectional area of the flow path, a suction port established in the peripheral wall portion of the venturi portion, and a second flow channel through which the detergent flows and communicates with the suction port, the peripheral wall of the venturi portion In a part of the part is provided with a convex portion that swells inward in the radial direction, and the suction port is formed so as to open to this convex portion,
A cleaning liquid generator, wherein a parting line, which is an axial division line of a core mold for forming the first flow path, is located at a position away from the opening of the suction port of the convex portion in the axial direction. 前記パーティングラインは、前記吸込み口の開口箇所から前記第１流路における水の流れ方向下流側に離れた位置に存することを特徴とする請求項１記載の洗浄液生成器。
2. The cleaning liquid generator according to claim 1, wherein the parting line is located at a position away from an opening portion of the suction port on the downstream side in the water flow direction in the first flow path.
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