JP6007283B1 - Flow rate detector - Google Patents
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Abstract
【課題】 センサ本体とパドル部材との接触に伴う摩耗の発生を防止し、パドル部材の紛失を未然に防ぐこと。【解決手段】 配管１００に固定されたセンサ固定部２０と、磁気センサ４２を収容すると共に、センサ固定部２０から配管１００内部に突出配置されたセンサ本体４０と、センサ固定部２０に設けられ、配管１００の軸方向に交差する向きに配置された揺動軸Ｃを有するベース部２２と、ベース部２２から揺動軸Ｃ方向に延設され、センサ固定部２０及びセンサ本体４０から離間した位置に回動部を有するピン組付部５０と、ピン組付部５０に取り付けられ、流体の通流が無い時はセンサ本体４０側に位置し、流体の通流によってセンサ本体４０から離間する方向に揺動するパドル部材６０とを備えている。【選択図】図２PROBLEM TO BE SOLVED: To prevent occurrence of wear due to contact between a sensor main body and a paddle member, and to prevent the paddle member from being lost. SOLUTION: A sensor fixing unit 20 fixed to a pipe 100 and a magnetic sensor 42 are accommodated, and a sensor main body 40 that is disposed so as to protrude from the sensor fixing unit 20 into the pipe 100, and the sensor fixing unit 20. A base portion 22 having a swing axis C arranged in a direction crossing the axial direction of the pipe 100, and a position extending from the base portion 22 in the swing axis C direction and separated from the sensor fixing portion 20 and the sensor body 40. A pin assembly 50 having a rotating part, and a pin assembly 50 that is attached to the pin assembly 50 and is located on the sensor body 40 side when there is no fluid flow, and away from the sensor body 40 by the fluid flow. And a paddle member 60 that swings. [Selection] Figure 2
Description
本発明は、停止流量を検出する流量センサを有する流量検出装置に関する。 The present invention relates to a flow rate detection device having a flow rate sensor that detects a stop flow rate.
ビル等の建物には、水道本管に接続され、蛇口まで給水する給水装置が設置されている。給水装置は、例えば、ポンプ装置と、ポンプ装置のポンプから吐出された水を蛇口まで導く流路を形成する管部材（配管）と、流路を流れる水の流量を検出する流量センサと、流路内の圧力を検出する圧力検出装置とから構成されている。 In a building such as a building, a water supply device connected to a water main and supplying water to a faucet is installed. The water supply device includes, for example, a pump device, a pipe member (pipe) that forms a flow path that guides water discharged from the pump of the pump device to a faucet, a flow rate sensor that detects a flow rate of water flowing through the flow path, It is comprised from the pressure detection apparatus which detects the pressure in a path | route.
ポンプの制御として、圧力検出装置の検出結果に基づいて流路内の圧力がポンプの起動圧力以下であると判定するとモータを起動し、流量センサの検出結果に基づいて流路内の流量がポンプの停止流量以下であると判定するとポンプの駆動を停止する制御が知られている（例えば、特許文献１参照。）。 As a pump control, when it is determined that the pressure in the flow path is equal to or lower than the pump start pressure based on the detection result of the pressure detection device, the motor is started, and the flow rate in the flow path is determined based on the detection result of the flow sensor. Control that stops driving the pump when it is determined that the flow rate is equal to or less than the stop flow rate is known (see, for example, Patent Document 1).
流量センサとして、パドル部材を有するパドル部材式の流量センサが知られている。図５及び図６に示すように、パドル部材式の流量センサ２００は、管部材に設けられるセンサ本体２１０と、流路内に配置されてセンサ本体２１０に対し揺動可能に支持されるパドル部材２２０とを有している。 As a flow sensor, a paddle member type flow sensor having a paddle member is known. As shown in FIGS. 5 and 6, the paddle member type flow rate sensor 200 includes a sensor main body 210 provided in the pipe member, and a paddle member that is disposed in the flow path and is swingably supported with respect to the sensor main body 210. 220.
センサ本体２１０には、永久磁石の磁力によって作動するリードスイッチ２３０が設けられている。パドル部材２２０には、永久磁石が設けられている。パドル部材２２０に設けられる永久磁石の磁力は、パドル部材２２０が揺動していない初期位置（下向き）にある状態においてセンサ本体２１０の検出部の検出範囲にあり、パドル部材２２０が初期位置に対して揺動した状態において検出部の検出範囲から外れる。 The sensor body 210 is provided with a reed switch 230 that is operated by the magnetic force of a permanent magnet. The paddle member 220 is provided with a permanent magnet. The magnetic force of the permanent magnet provided in the paddle member 220 is within the detection range of the detection unit of the sensor body 210 in the initial position (downward) where the paddle member 220 is not swinging, and the paddle member 220 is in the initial position. In this state, the detection unit is out of the detection range.
パドル部材２２０は、水の流れを受けて揺動可能に形成されており、流路内の流量が停止流量より大きくなると、初期位置に対して揺動し、流量が停止流量以下となると、初期位置に戻る。初期位置に対するパドル部材２２０の最大揺動角度は、流路内の流量が停止流量以下となると初期位置に戻るように、予め設定された所定角度に設定されている。パドル部材２２０は、センサ本体２１０に当接することによって、所定角度以上揺動することが規制されている。また、パドル部材２２０のピン組付部２２１がセンサ本体２１０に近接して配置されている。ピン組付部２２１は、センサ本体２１０側に設けられたピン部材２１１にパドル部材２２０の係合部２２２を係合させて構成されている。 The paddle member 220 is formed so as to be able to swing in response to the flow of water. Return to position. The maximum swing angle of the paddle member 220 with respect to the initial position is set to a predetermined angle that is set in advance so that the flow returns to the initial position when the flow rate in the flow path is equal to or less than the stop flow rate. The paddle member 220 is restricted from swinging by a predetermined angle or more by contacting the sensor body 210. Further, the pin assembly portion 221 of the paddle member 220 is disposed in the vicinity of the sensor main body 210. The pin assembly portion 221 is configured by engaging an engaging portion 222 of the paddle member 220 with a pin member 211 provided on the sensor body 210 side.
上述した流量検出装置においては、次のような問題があった。すなわち、パドル部材２２０をセンサ本体２１０に対して当接させることによってパドル部材２２０が所定角度以上揺動することを規制する構造、及び、パドル部材２２０のピン組付部２２１がセンサ本体２１０に近接して配置された構造には、以下の問題点があった。パドル部材２２０とセンサ本体２１０との接触が長期に亘って繰り返されると、センサ本体２１０とパドル部材２２０とが摩耗する（図６中Ｘ１，Ｘ２）。この摩耗により、パドル部材２２０がピン組付部２２１から離脱し、紛失することがあった。 The flow rate detection device described above has the following problems. That is, the structure that restricts the paddle member 220 from swinging more than a predetermined angle by bringing the paddle member 220 into contact with the sensor body 210 and the pin assembly portion 221 of the paddle member 220 are close to the sensor body 210. The structure arranged as described above has the following problems. When the contact between the paddle member 220 and the sensor main body 210 is repeated over a long period of time, the sensor main body 210 and the paddle member 220 are worn (X1, X2 in FIG. 6). Due to this wear, the paddle member 220 may be detached from the pin assembly portion 221 and lost.
そこで本発明は、センサ本体とパドル部材との接触に伴う摩耗の発生を防止し、パドル部材の離脱を未然に防ぐことができる流量検出装置を提供することを目的とする。 Therefore, an object of the present invention is to provide a flow rate detection device that can prevent the occurrence of wear due to contact between a sensor main body and a paddle member and prevent the paddle member from being detached.
前記課題を解決し目的を達成するために、本発明の流量検出装置は次のように構成されている。 In order to solve the above problems and achieve the object, the flow rate detection device of the present invention is configured as follows.
管部材内部を通流する流体の流量を計測する流量検出装置において、前記管部材壁面に固定されたセンサ固定部と、磁気センサを収容すると共に、前記センサ固定部から前記管部材内部に突出配置されたセンサ本体と、前記センサ固定部に設けられ、前記管部材の軸方向に交差する向きに配置された揺動軸を有するベース部並びにこのベース部から揺動軸方向に離間した位置に回動部を有するピン組付部と、このピン組付部の前記回動部に取り付けられ、前記流体の通流が無い時は前記センサ本体側に位置し、前記流体の通流によって前記センサ本体から離間する方向に揺動するパドル部材とを具備し、前記センサ固定部は、前記パドル部材の揺動最大角位置において、前記パドル部材と当接すると共に、前記管部材の軸方向に平行に配置された対向面が設けられ、前記対向面には、凹部が形成されている。
管部材内部を通流する流体の流量を計測する流量検出装置において、前記管部材壁面に固定されたセンサ固定部と、磁気センサを収容すると共に、前記センサ固定部から前記管部材内部に突出配置されたセンサ本体と、前記センサ固定部に設けられ、前記管部材の軸方向に交差する向きに配置された揺動軸を有するベース部並びにこのベース部から揺動軸方向に離間した位置に回動部を有するピン組付部と、このピン組付部の前記回動部に取り付けられ、前記流体の通流が無い時は前記センサ本体側に位置し、前記流体の通流によって前記センサ本体から離間する方向に揺動するパドル部材とを具備し、前記ピン組付部は、前記ベース部において前記揺動軸に沿って設けられた孔部と、前記パドル部材に形成された回動部に、前記揺動軸に沿って設けられた貫通孔と、前記貫通孔側から前記孔部側に向けて圧入されたピン部材とを備え、前記ピン部材の外径は、前記孔部の内径より大きく、かつ、前記貫通孔の内径より小さく形成され、前記パドル部材は樹脂材製であり、前記貫通孔の開口部には前記ピン部材の外径より小さく形成された鍔部が形成されている。
In the flow rate detection device for measuring the flow rate of the fluid flowing through the inside of the pipe member, the sensor fixing part fixed to the wall surface of the pipe member and the magnetic sensor are housed, and are arranged to protrude from the sensor fixing part to the inside of the pipe member And a base portion having a swing shaft provided in the sensor fixing portion and arranged in a direction intersecting the axial direction of the tube member, and a position spaced from the base portion in the swing shaft direction. A pin assembly portion having a moving portion, and attached to the rotating portion of the pin assembly portion, is located on the sensor body side when there is no fluid flow, and the sensor body by the fluid flow A paddle member that swings in a direction away from the paddle member, and the sensor fixing portion abuts against the paddle member at a maximum swing angle position of the paddle member and is disposed in parallel with the axial direction of the tube member. The Opposing surfaces is provided, said the facing surface, a recessed portion is formed.
In the flow rate detection device for measuring the flow rate of the fluid flowing through the inside of the pipe member, the sensor fixing part fixed to the wall surface of the pipe member and the magnetic sensor are housed, and are arranged to protrude from the sensor fixing part to the inside of the pipe member And a base portion having a swing shaft provided in the sensor fixing portion and arranged in a direction intersecting the axial direction of the tube member, and a position spaced from the base portion in the swing shaft direction. A pin assembly portion having a moving portion, and attached to the rotating portion of the pin assembly portion, is located on the sensor body side when there is no fluid flow, and the sensor body by the fluid flow A paddle member that swings in a direction away from the pin, and the pin assembly portion includes a hole provided along the swing shaft in the base portion, and a rotating portion formed in the paddle member. Along the swing axis. And a pin member press-fitted from the through hole side toward the hole portion side, and the pin member has an outer diameter larger than an inner diameter of the hole portion and the through hole. It is formed from an inner diameter smaller, and the paddle member is made of resin material, the opening of the through hole that has the flange portion formed smaller than the outer diameter of the pin member is formed.
本発明によれば、センサ本体とパドル部材との接触に伴う摩耗の発生を防止し、パドル部材の離脱を未然に防ぐことが可能となる。 According to the present invention, it is possible to prevent the wear caused by the contact between the sensor main body and the paddle member, and to prevent the paddle member from being detached.
図１は本発明の一実施形態に係る流量検出装置１０が配管１００に組み込まれた状態を示す正面図、図２は流量検出装置１０を示す斜視図、図３は流量検出装置１０を構成する装置本体を示す斜視図、図４は図２におけるＡ−Ａ線で切断して矢印方向に見た断面図である。なお、図中１００は配管（管部材）、図中矢印Ｆは配管１００内を流れる水（流体）の流れ方向、Ｃは揺動軸を示している。揺動軸Ｃは配管１００の軸方向（水の通流方向）に対し、交差する方向に配置されている。 FIG. 1 is a front view showing a state in which a flow rate detection device 10 according to an embodiment of the present invention is incorporated in a pipe 100, FIG. 2 is a perspective view showing the flow rate detection device 10, and FIG. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 2 and viewed in the direction of the arrow. In the figure, reference numeral 100 denotes a pipe (pipe member), arrow F in the figure denotes the flow direction of water (fluid) flowing through the pipe 100, and C denotes a swing shaft. The swing axis C is arranged in a direction that intersects the axial direction of the pipe 100 (water flow direction).
流量検出装置１０は、配管１００の壁面に固定されるセンサ固定部２０と、このセンサ固定部２０から配管１００の外部に設けられたフランジ部３０と、センサ固定部２０から配管１００の内部に突出して設けられるセンサ本体４０と、揺動軸Ｃ廻りに揺動自在に設けられたパドル部材６０とを備えている。なお、図中５０はセンサ固定部２０とパドル部材６０とによって構成されたピン組付部５０を示している。 The flow rate detection device 10 projects from the sensor fixing unit 20 fixed to the wall surface of the pipe 100, the flange 30 provided outside the pipe 100 from the sensor fixing unit 20, and the sensor fixing unit 20 into the pipe 100. And a paddle member 60 provided so as to be swingable about the swing axis C. In the drawing, reference numeral 50 denotes a pin assembly portion 50 constituted by the sensor fixing portion 20 and the paddle member 60.
センサ固定部２０は、内部に基板２１が配置され、センサ本体４０に設けられた後述する磁気センサ４２及び感温センサ４３からの出力が入力されている。また、センサ固定部２０におけるセンサ本体４０の基端側の近傍には、ベース部２２が設けられ、このベース部２２には揺動軸Ｃに沿った孔部２３が設けられている。さらに、ベース部２２には、パドル部材６０の揺動最大角位置において、パドル部材６０と対向すると共に、配管１００の軸方向に平行に配置された対向面２５が設けられている。この対向面２５には、凹部２６が形成されている。 The sensor fixing unit 20 has a substrate 21 disposed therein, and outputs from a magnetic sensor 42 and a temperature sensor 43 described later provided in the sensor body 40 are input. Further, a base portion 22 is provided in the vicinity of the base end side of the sensor main body 40 in the sensor fixing portion 20, and a hole portion 23 along the swing axis C is provided in the base portion 22. Further, the base portion 22 is provided with a facing surface 25 that faces the paddle member 60 at the maximum swing angle position of the paddle member 60 and is arranged in parallel to the axial direction of the pipe 100. A concave portion 26 is formed in the facing surface 25.
センサ本体４０は、液密に設けられた筐体４１を有し、この筐体４１内部に磁気センサ４２及び感温センサ４３が収容されている。磁気センサ４２は、パドル部材６０に組み込まれた後述する永久磁石Ｐの磁界を検出する機能を有している。具体的には、パドル部材６０が初期位置（下方）にある際に、水の流量がゼロであることを検出する。また、感温センサ４３は、水温を検出する機能を有している。この水温が制御盤に入力されると、例えば締切運転時に異常高温となった場合にポンプの作動を停止する。 The sensor body 40 has a casing 41 provided in a liquid-tight manner, and a magnetic sensor 42 and a temperature sensor 43 are accommodated in the casing 41. The magnetic sensor 42 has a function of detecting a magnetic field of a permanent magnet P (described later) incorporated in the paddle member 60. Specifically, when the paddle member 60 is at the initial position (downward), it is detected that the flow rate of water is zero. The temperature sensor 43 has a function of detecting the water temperature. When this water temperature is input to the control panel, for example, when the temperature becomes abnormally high during the shut-off operation, the pump operation is stopped.
ピン組付部５０は、センサ固定部２０に設けられたベース部２２と、このベース部２２に揺動軸Ｃに沿って設けられた孔部２３と、パドル部材６０に設けられた後述する回動部６４に揺動軸Ｃに沿って設けられた貫通孔６５と、貫通孔６５側から孔部２３側に向けて圧入されたピン部材５１とを備えている。 The pin assembly portion 50 includes a base portion 22 provided in the sensor fixing portion 20, a hole portion 23 provided in the base portion 22 along the swing axis C, and a rotation described later provided in the paddle member 60. The moving portion 64 includes a through hole 65 provided along the swing axis C, and a pin member 51 press-fitted from the through hole 65 side toward the hole portion 23 side.
ピン部材５１の外径は、孔部２３の内径より大きく、かつ、貫通孔６５の内径より小さく形成されている。図４中αはピン部材５１の外径と孔部２３の内径との差、図４中βはピン部材５１の外径と貫通孔６５の内径との差を示している。また、ピン部材５１が貫通孔６５内に突出する揺動軸Ｃ方向の長さは貫通孔６５の揺動軸Ｃ方向の長さより短く形成されている。 The outer diameter of the pin member 51 is larger than the inner diameter of the hole 23 and smaller than the inner diameter of the through hole 65. In FIG. 4, α indicates the difference between the outer diameter of the pin member 51 and the inner diameter of the hole 23, and β in FIG. 4 indicates the difference between the outer diameter of the pin member 51 and the inner diameter of the through hole 65. Further, the length in the swing axis C direction in which the pin member 51 projects into the through hole 65 is shorter than the length of the through hole 65 in the swing axis C direction.
パドル部材６０は、樹脂材製で形成された直方体状の本体部６１と、この本体部６１内に永久磁石Ｐを着脱自在に設けられた磁石保持部６２と、この磁石保持部６２に設けられた窓部６３とを備えている。また、パドル部材６０の基端側には円板状の回動部６４が設けられており、前述したピン組付部５０を構成している。回動部６４には揺動軸Ｃに沿った貫通孔６５が形成されている。貫通孔６５の開口部６５ａには、内側に突出した鍔部６６が形成されている。パドル部材６０を形成する樹脂材はエラストマ成分が多く、弾力性を有している。 The paddle member 60 includes a rectangular parallelepiped main body 61 formed of a resin material, a magnet holding portion 62 in which a permanent magnet P is detachably provided in the main body portion 61, and the magnet holding portion 62. And a window portion 63. Further, a disc-shaped rotating portion 64 is provided on the base end side of the paddle member 60, and constitutes the pin assembly portion 50 described above. A through hole 65 along the swing axis C is formed in the rotating portion 64. A flange 66 that protrudes inward is formed in the opening 65 a of the through hole 65. The resin material forming the paddle member 60 has many elastomer components and has elasticity.
回動部６４の外周部は、センサ固定部２０及びセンサ本体４０から離間し、どの揺動位置にあってもセンサ固定部２０及びセンサ本体４０に接触しないように形成されている。 The outer peripheral part of the rotation part 64 is separated from the sensor fixing part 20 and the sensor main body 40 and is formed so as not to contact the sensor fixing part 20 and the sensor main body 40 at any swing position.
パドル部材６０の対向面２５側には、突起部６９を設けてもよい。この突起部６９を設けることで、突起部６９が対向面２５に当接するため、パドル部材６０の可動域を規定することができる。このため、ポンプや配管を取り替えた場合に、適切な流量検出範囲となるようにパドル部材６０の揺動範囲を変更する際に、パドル部材６０の突起部６９を取り替えるだけで済み、センサ固定部２０やセンサ本体４０はそのまま流用することができ、部品共通化による製品コストの低減を図ることができる。 A protrusion 69 may be provided on the facing surface 25 side of the paddle member 60. By providing the projection 69, the projection 69 abuts against the opposing surface 25, so that the movable range of the paddle member 60 can be defined. For this reason, when the swing range of the paddle member 60 is changed so that an appropriate flow rate detection range is obtained when the pump or piping is replaced, it is only necessary to replace the protrusion 69 of the paddle member 60, and the sensor fixing portion. 20 and the sensor body 40 can be used as they are, and the product cost can be reduced by sharing parts.
ピン部材５１は、組み付け時に貫通孔６５をガイド孔として孔部２３に圧入される。上述したようにピン部材５１の外径は、孔部２３の内径より大きいのでピン部材５１はセンサ固定部２０に対し固定される。これに対し、貫通孔６５の内径はピン部材５１の外径より大きいので、パドル部材６０は揺動軸Ｃに沿って自由に揺動可能である。また、圧入時に、ピン部材５１の外径は、鍔部６６の内径よりも大きいが、鍔部６６を構成する樹脂材が弾力性を有しているため、鍔部６６を変形させて圧入可能となる。図４中δは、ピン部材５１の外径と鍔部６６の内径との差を示している。また、万が一、ピン部材５１が孔部２３から抜けた場合であっても、ピン部材５１が抜ける方向には鍔部６６を変形させるほどの大きな力が加わらないため、ピン部材５１が脱落することはなく、パドル部材６０がセンサ固定部２０から外れることはない。 The pin member 51 is press-fitted into the hole 23 using the through hole 65 as a guide hole during assembly. As described above, since the outer diameter of the pin member 51 is larger than the inner diameter of the hole portion 23, the pin member 51 is fixed to the sensor fixing portion 20. In contrast, since the inner diameter of the through hole 65 is larger than the outer diameter of the pin member 51, the paddle member 60 can freely swing along the swing axis C. Further, at the time of press-fitting, the outer diameter of the pin member 51 is larger than the inner diameter of the flange portion 66, but since the resin material constituting the flange portion 66 has elasticity, it is possible to press-fit by deforming the flange portion 66. It becomes. In FIG. 4, δ indicates the difference between the outer diameter of the pin member 51 and the inner diameter of the flange 66. In addition, even if the pin member 51 is removed from the hole 23, the pin member 51 is dropped because a large force that deforms the flange 66 is not applied in the direction in which the pin member 51 is removed. In other words, the paddle member 60 is not detached from the sensor fixing portion 20.
なお、孔部２３の開口は、面取りされており、圧入時の案内及びパドル部材６０の線バリの逃げ効果を有している。 Note that the opening of the hole 23 is chamfered, and has a guide effect during press-fitting and a line burr escape effect of the paddle member 60.
このように構成された流量検出装置１０は、次のようにして流量検出を行う。ポンプが停止し、弁が閉じている場合には、配管１００内を水が流れない。この場合、パドル部材６０は重力により、初期位置である下方向に位置する。この時、パドル部材６０内の永久磁石Ｐが発生する磁界を磁気センサ４２で検出し、基板に向けて出力する。この時の出力値は最大値となり、この最大値が入力された場合の流量はゼロ（ＯＦＦ）と判定される。 The flow rate detection device 10 configured as described above performs flow rate detection as follows. When the pump is stopped and the valve is closed, water does not flow through the pipe 100. In this case, the paddle member 60 is positioned in the downward direction, which is the initial position, due to gravity. At this time, a magnetic field generated by the permanent magnet P in the paddle member 60 is detected by the magnetic sensor 42 and output toward the substrate. The output value at this time is the maximum value, and the flow rate when this maximum value is input is determined to be zero (OFF).
次に、ポンプが稼働する等により配管１００に水が供給され、水が通流すると（図１中矢印Ｆ参照）、その流量に応じてパドル部材６０が揺動する。この揺動の角度によってパドル部材６０からの磁界が変化し、磁気センサ４２からの出力値が変化する。この出力値が閾値を下回ると、水の流れを検出することができる。 Next, when the pump is operated or the like, water is supplied to the pipe 100 and the water flows (see arrow F in FIG. 1), the paddle member 60 swings according to the flow rate. The magnetic field from the paddle member 60 changes depending on the swing angle, and the output value from the magnetic sensor 42 changes. When this output value falls below the threshold value, the flow of water can be detected.
パドル部材６０が揺動すると、回動部６４も同時に揺動するが、上述したように回動部６４の外周部とセンサ固定部２０及びセンサ本体４０とは離間しており、接触することがない。このため、接触に伴う摩耗が発生せず、パドル部材６０の紛失を長期に亘って防止することができる。したがって、流量検出装置１０の取替や修理を行う必要が無く、交換コストや部品コストを低減することが可能となる。 When the paddle member 60 swings, the rotating portion 64 also swings at the same time. However, as described above, the outer peripheral portion of the rotating portion 64 is separated from the sensor fixing portion 20 and the sensor main body 40 and can come into contact with each other. Absent. For this reason, wear due to contact does not occur, and loss of the paddle member 60 can be prevented over a long period of time. Therefore, it is not necessary to replace or repair the flow rate detection device 10, and it is possible to reduce replacement costs and component costs.
また、パドル部材６０が当接する位置に設けられた対向面２５には、凹部２６が形成されている。パドル部材６０が対向面２５に近づく場合、凹部２６に溜まっている水又は空気によってパドル部材６０と対向面２５との間の接触を緩和することができ、パドル部材６０の摩耗を低減することができる。 A concave portion 26 is formed in the facing surface 25 provided at a position where the paddle member 60 abuts. When the paddle member 60 approaches the facing surface 25, the contact between the paddle member 60 and the facing surface 25 can be relaxed by water or air accumulated in the recess 26, and wear of the paddle member 60 can be reduced. it can.
なお、パドル部材６０の窓部６３から永久磁石Ｐの一部が露出するため、例えば白塗装することで外側から容易に確認することができる。このため、永久磁石Ｐの取付忘れによる非作動を防止したり、Ｓ極とＮ極においてマークや色違いを設けておけば、永久磁石Ｐの逆取付等の不具合を防止することができる。したがって、組立後に永久磁石Ｐの確認を目視できるため、流量検出装置１０の組立を自動化することができ、生産性を向上させることができる。 In addition, since a part of permanent magnet P is exposed from the window part 63 of the paddle member 60, it can be easily confirmed from the outside by, for example, white coating. For this reason, it is possible to prevent problems such as reverse mounting of the permanent magnet P by preventing non-operation due to forgetting to mount the permanent magnet P or providing marks or different colors in the S and N poles. Therefore, since the confirmation of the permanent magnet P can be visually confirmed after the assembly, the assembly of the flow rate detection device 10 can be automated and the productivity can be improved.
また、感温センサ４３が設けられているため、配管１００内の水温が検出されており、制御盤によって例えば締切運転時に異常高温となった場合にポンプの作動を停止する。 Further, since the temperature sensor 43 is provided, the water temperature in the pipe 100 is detected, and the pump operation is stopped when the control panel becomes an abnormally high temperature during, for example, a shut-off operation.
このように本実施の形態に係る流量検出装置１０によれば、センサ固定部２０及びセンサ本体４０とパドル部材６０との接触に伴う摩耗の発生を防止し、パドル部材６０の紛失を未然防ぐことができる。これによって交換コストや製品コストを低減することができる。 As described above, according to the flow rate detection device 10 according to the present embodiment, it is possible to prevent the wear due to the contact between the sensor fixing unit 20 and the sensor main body 40 and the paddle member 60 and to prevent the paddle member 60 from being lost. Can do. As a result, replacement costs and product costs can be reduced.
なお、本発明は前記実施の形態に限定されるものではなくこの他、本発明の要旨を逸脱
しない範囲で種々変形実施可能であるのは勿論である。
以下に、本願出願の当初の特許請求の範囲に記載された発明を付記する。
［１］管部材内部を通流する流体の流量を計測する流量検出装置において、
前記管部材壁面に固定されたセンサ固定部と、
磁気センサを収容すると共に、前記センサ固定部から前記管部材内部に突出配置されたセンサ本体と、
前記センサ固定部に設けられ、前記管部材の軸方向に交差する向きに配置された揺動軸を有するベース部並びにこのベース部から揺動軸方向に延設され、前記センサ固定部及び前記センサ本体から離間した位置に回動部を有するピン組付部と、
このピン組付部に取り付けられ、前記流体の通流が無い時は前記センサ本体側に位置し、前記流体の通流によって前記センサ本体から離間する方向に揺動するパドル部材とを備えている流量検出装置。
［２］前記センサ固定部は、前記パドル部材の揺動最大角位置において、前記パドル部材と当接すると共に、前記管部材の軸方向に平行に配置された対向面が設けられ、
前記対向面には、凹部が形成されている[１]に記載の流量検出装置。
［３］前記ピン組付部は、前記ベース部において前記揺動軸に沿って設けられた孔部と、
前記パドル部材に形成された回動部に、前記揺動軸に沿って設けられた貫通孔と、
前記貫通孔側から前記孔部側に向けて圧入されたピン部材とを備え、
前記ピン部材の外径は、前記孔部の内径より大きく、かつ、前記貫通孔の内径より小さく形成され、
前記パドル部材は樹脂材製であり、前記貫通孔の開口部には前記ピン部材の外径より小さく形成された鍔部が形成されている[１]に記載の流量検出装置。
［４］前記センサ本体には、感温センサが設けられている[１]に記載の流量検出装置。
The present invention is the addition is not limited to the above embodiments, it is given Ru course der various modifications may be implemented without departing from the scope of the present invention.
Hereinafter, the invention described in the scope of claims of the present application will be appended.
[1] In a flow rate detection device for measuring a flow rate of a fluid flowing through a pipe member,
A sensor fixing part fixed to the wall surface of the pipe member;
A sensor main body that houses a magnetic sensor and is arranged to protrude from the sensor fixing portion into the tube member;
A base portion having a swing shaft provided in the sensor fixing portion and arranged in a direction crossing the axial direction of the tube member, and extending from the base portion in the swing shaft direction, the sensor fixing portion and the sensor A pin assembling part having a rotating part at a position separated from the main body;
A paddle member attached to the pin assembly and positioned on the sensor body side when there is no fluid flow, and swings in a direction away from the sensor body by the fluid flow. Flow rate detection device.
[2] The sensor fixing portion is provided with a facing surface that is in contact with the paddle member at a maximum swing angle position of the paddle member and is disposed in parallel with the axial direction of the tube member,
The flow rate detection device according to [1], wherein a concave portion is formed on the facing surface.
[3] The pin assembly portion includes a hole portion provided along the swing axis in the base portion;
A through-hole provided along the swing axis in the rotating portion formed in the paddle member;
A pin member press-fitted from the through hole side toward the hole portion side,
The outer diameter of the pin member is larger than the inner diameter of the hole and smaller than the inner diameter of the through hole,
The flow detection device according to [1], wherein the paddle member is made of a resin material, and an opening portion of the through hole is formed with a flange portion that is formed to be smaller than the outer diameter of the pin member.
[4] The flow rate detection device according to [1], wherein the sensor body is provided with a temperature sensor.
１０…流量検出装置、２０…センサ固定部、２２…ベース部、２３…孔部、２５…対向面、２６…凹部、４０…センサ本体、４１…筐体、４２…磁気センサ、４３…感温センサ、５０…ピン組付部、５１…ピン部材、６０…パドル部材、６２…磁石保持部、６３…窓部、６４…回動部、６５…貫通孔、６６…鍔部、Ｃ…揺動軸、Ｐ…永久磁石、１００…配管（管部材）。 DESCRIPTION OF SYMBOLS 10 ... Flow rate detection apparatus, 20 ... Sensor fixing | fixed part, 22 ... Base part, 23 ... Hole part, 25 ... Opposite surface, 26 ... Recessed part, 40 ... Sensor main body, 41 ... Housing | casing, 42 ... Magnetic sensor, 43 ... Temperature sensing Sensor: 50 ... Pin assembly part, 51 ... Pin member, 60 ... Paddle member, 62 ... Magnet holding part, 63 ... Window part, 64 ... Rotating part, 65 ... Through hole, 66 ... Gutter part, C ... Swing Shaft, P ... permanent magnet, 100 ... piping (pipe member).
Claims (2)
前記管部材壁面に固定されたセンサ固定部と、
磁気センサを収容すると共に、前記センサ固定部から前記管部材内部に突出配置されたセンサ本体と、
前記センサ固定部に設けられ、前記管部材の軸方向に交差する向きに配置された揺動軸を有するベース部並びにこのベース部から揺動軸方向に離間した位置に回動部を有するピン組付部と、
このピン組付部の前記回動部に取り付けられ、前記流体の通流が無い時は前記センサ本体側に位置し、前記流体の通流によって前記センサ本体から離間する方向に揺動するパドル部材とを具備し、前記センサ固定部は、前記パドル部材の揺動最大角位置において、前記パドル部材と当接すると共に、前記管部材の軸方向に平行に配置された対向面が設けられ、前記対向面には、凹部が形成されていることを特徴とする流量検出装置。 In the flow rate detection device for measuring the flow rate of the fluid flowing through the inside of the pipe member,
A sensor fixing part fixed to the wall surface of the pipe member;
A sensor main body that houses a magnetic sensor and is arranged to protrude from the sensor fixing portion into the tube member;
A base portion having a swing shaft provided in the sensor fixing portion and arranged in a direction crossing the axial direction of the tube member, and a pin set having a rotating portion spaced from the base portion in the swing shaft direction Appendix,
A paddle member that is attached to the rotating portion of the pin assembly and is located on the sensor body side when there is no fluid flow, and swings away from the sensor body due to the fluid flow The sensor fixing portion is in contact with the paddle member at the maximum swing angle position of the paddle member, and is provided with a facing surface arranged in parallel to the axial direction of the tube member. A flow rate detecting device, wherein a concave portion is formed on the surface.
前記管部材壁面に固定されたセンサ固定部と、
磁気センサを収容すると共に、前記センサ固定部から前記管部材内部に突出配置されたセンサ本体と、
前記センサ固定部に設けられ、前記管部材の軸方向に交差する向きに配置された揺動軸を有するベース部並びにこのベース部から揺動軸方向に離間した位置に回動部を有するピン組付部と、
このピン組付部の前記回動部に取り付けられ、前記流体の通流が無い時は前記センサ本体側に位置し、前記流体の通流によって前記センサ本体から離間する方向に揺動するパドル部材とを具備し、
前記ピン組付部は、前記ベース部において前記揺動軸に沿って設けられた孔部と、
前記パドル部材に形成された回動部に、前記揺動軸に沿って設けられた貫通孔と、
前記貫通孔側から前記孔部側に向けて圧入されたピン部材とを備え、
前記ピン部材の外径は、前記孔部の内径より大きく、かつ、前記貫通孔の内径より小さく形成され、
前記パドル部材は樹脂材製であり、前記貫通孔の開口部には前記ピン部材の外径より小さく形成された鍔部が形成されていることを特徴とする流量検出装置。 In the flow rate detection device for measuring the flow rate of the fluid flowing through the inside of the pipe member,
A sensor fixing part fixed to the wall surface of the pipe member;
A sensor main body that houses a magnetic sensor and is arranged to protrude from the sensor fixing portion into the tube member;
A base portion having a swing shaft provided in the sensor fixing portion and arranged in a direction crossing the axial direction of the tube member, and a pin set having a rotating portion spaced from the base portion in the swing shaft direction Appendix,
A paddle member that is attached to the rotating portion of the pin assembly and is located on the sensor body side when there is no fluid flow, and swings away from the sensor body due to the fluid flow And
The pin assembly part includes a hole provided along the swing axis in the base part,
A through-hole provided along the swing axis in the rotating portion formed in the paddle member;
A pin member press-fitted from the through hole side toward the hole portion side,
The outer diameter of the pin member is larger than the inner diameter of the hole and smaller than the inner diameter of the through hole,
The paddle member is made of a resin material, and a flange formed smaller than the outer diameter of the pin member is formed in the opening of the through hole.
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