KR100922531B1 - Water pump with reverse-rotation detecter - Google Patents

Water pump with reverse-rotation detecter Download PDF

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Publication number
KR100922531B1
KR100922531B1 KR1020090067195A KR20090067195A KR100922531B1 KR 100922531 B1 KR100922531 B1 KR 100922531B1 KR 1020090067195 A KR1020090067195 A KR 1020090067195A KR 20090067195 A KR20090067195 A KR 20090067195A KR 100922531 B1 KR100922531 B1 KR 100922531B1
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South Korea
Prior art keywords
drive shaft
shaft
electric motor
rotation
chamber
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KR1020090067195A
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Korean (ko)
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홍선표
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(주)대진정공
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0245—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • F04D29/044—Arrangements for joining or assembling shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Abstract

PURPOSE: A water pump with a reverse-rotation detector is provided to prevent the malfunction of a detecting device and damage to sensors forming the detecting device by not applying magnetic field and heat generated during the operation of an electric motor on the detecting device. CONSTITUTION: A water pump with a reverse-rotation detector comprises a drive shaft, a housing, and a detecting device. The drive shaft(110) has an impeller formed at one end for the suction and the discharge of fluid. The housing(120) supports the rotation of the drive shaft and a electric motor(130) rotating the drive shaft is built in the housing. The detecting device(140) is installed in the housing to detect the rotation state of the drive shaft. The detecting device includes an auxiliary rotary shaft, an encoder, and a shielding plate. The auxiliary rotary shaft is coupled on the drive shaft and rotates with the drive shaft. The auxiliary rotary shaft is extended inside an another chamber(C2) formed on the top of a chamber(C1) in which the electric motor is installed. The encoder is installed at the chamber to be coupled on the auxiliary rotary shaft and detects the rotation state of the auxiliary rotary shaft. The shielding plate is installed between the encoder and the electric motor.

Description

역회전 검출장치를 갖는 수중펌프{Water pump with reverse-rotation detecter}Water pump with reverse-rotation detector

본 발명은 수중펌프에 관한 것으로, 특히 구동축의 회전동작 상태를 감지하기 위하여 수중펌프의 내부에 구비된 검출장치가 전동모터의 작동시 발생하는 자기장이나 열에 의한 영향을 받지 않고 구동축의 작동상태를 정확하게 검출할 수 있도록 한 역회전 검출장치를 갖는 수중펌프에 관한 것이다.The present invention relates to a submersible pump, and in particular, in order to detect the rotational operation state of the drive shaft, the detection device provided inside the submersible pump accurately detects the operation state of the drive shaft without being affected by the magnetic field or heat generated during operation of the electric motor. A submersible pump having a reverse rotation detection device capable of detecting.

일반적으로 수중펌프라 함은 수중에서 작동하는 전동식 펌프를 의미하는 것으로, 사용목적 및 용도에 따라 심정용, 상수도 가압용, 배수용 등 여러 종류로 다양하게 구분되어 진다.In general, the submersible pump means an electric pump that operates in water, and is divided into various types, such as for water purification, tap water supply, and drainage, depending on the purpose and purpose of use.

이러한 수중펌프는 전원공급시 내부에 구비된 전동모터에 의하여 구동축이 회전하고, 상기 구동축이 회전할 때 구동축의 단부에 일체로 연결된 임펠러가 케이스 내에서 회전함으로써 유체를 흡입하고, 흡입된 유체를 정해진 유로를 통해 토출하게 된다.The submersible pump rotates the drive shaft by an electric motor provided therein when the power is supplied, and when the drive shaft rotates, an impeller integrally connected to the end of the drive shaft sucks the fluid by rotating in the case, and the sucked fluid is defined. Discharge through the flow path.

한편 수중펌프가 정상적인 작동을 하는 과정에서 임펠러가 역회전을 하는 경 우가 종종 발생되고 있으며, 이러한 임펠러의 역회전이 지속될 경우 펌프나 주변기기의 손상을 초래할 수 있으므로, 수중펌프의 역동작 즉, 구동축 또는 임펠러의 역회전을 신속하게 감지하여 수중펌프의 작동을 정지시킬 수 있는 수단이 요구되었다.On the other hand, the impeller is often rotated in reverse during the normal operation of the submersible pump, and if the reverse rotation of the impeller continues, it may cause damage to the pump or peripherals. There was a need for a means of quickly detecting the impeller's reverse rotation and shutting down the submersible pump.

상기와 같은 수단으로써, 한국등록실용신안 제0409016호에는 수중모터펌프의 회전수 및 회전방향을 측정하는 장치가 개시되어 있으며, 본 출원인에 의해 출원된 한국공개특허 제2005-0035799호에는 수중펌프의 역회전 방지장치가 개시되어 있다.As a means as described above, Korean Utility Model No.0409016 discloses a device for measuring the rotational speed and the rotational direction of the submersible motor pump, Korean Patent Laid-Open No. 2005-0035799 filed by the present applicant Disclosed is a reverse rotation prevention device.

전자의 경우, 구동축(회전자축)을 지지하는 베어링의 커버에 4개의 센서가 상호 90ㅀ 간격을 유지하도록 설치되고, 구동축(회전자축)에 기준위치감지부가 설치된 것으로 구성되어 구동축과 함께 회전하는 기준위치감지부를 4개의 센서가 순차적으로 감지함으로써 구동축의 회전방향이나 속도를 검출하도록 구성되어 있다.In the former case, the four sensors are installed on the cover of the bearing supporting the drive shaft (rotor shaft) so as to maintain a 90 ° spacing therebetween, and the reference position sensing unit is installed on the drive shaft (rotator shaft) to rotate together with the drive shaft. The four position sensors sequentially detect the position sensing unit so as to detect the rotational direction or speed of the drive shaft.

후자의 경우, 구동축 상에 서로 다른 위상각을 갖는 다수개의 신호반사면이 설치되고, 상기 신호반사면에 대응하는 복수개의 센서들이 하우징에 설치된 것으로 구성되어 구동축의 회전시 신호반사면에 대응하는 복수개의 센서들이 신호를 발생함으로써 구동축의 역회전을 감지하도록 구성되어 있다.In the latter case, a plurality of signal reflecting surfaces having different phase angles are provided on the drive shaft, and a plurality of sensors corresponding to the signal reflecting surfaces are provided in the housing, so that a plurality of signal reflecting surfaces corresponding to the signal reflecting surfaces when the drive shaft is rotated is provided. Sensors are configured to detect reverse rotation of the drive shaft by generating a signal.

그러나 위와 같은 구성의 검출장치들은 가장 중요한 기능을 제공하는 센서류가 전동모터를 구성하는 회전자 및 고정자에 근접한 위치에 설치되어 전동모터의 작동시 발생되는 자기장과 열에 그대로 노출되므로, 센서류의 오작동 확률이 높고, 센서류가 쉽게 손상되는 문제점을 가지고 있다.However, the detection devices of the above configuration are installed in the position close to the rotor and stator constituting the electric motor is exposed to the magnetic field and heat generated during the operation of the electric motor, the probability of malfunction of the sensor It has a high, easily damaged sensor.

본 발명은 상기와 같은 문제점을 고려하여 이루어진 것으로, 본 발명의 목적은 구동축 및 임펠러의 역회전을 검출하기 위한 검출장치를 수중펌프의 내부에 설치하되, 전동모터의 작동시 발생되는 자기장이나 열이 검출장치에 영향을 미치지 않게 함으로써 검출장치의 오작동을 방지하고, 검출장치를 구성하는 센서류의 손상을 방지할 수 있도록 한 역회전 검출장치를 갖는 수중펌프를 제공함에 있다.The present invention has been made in consideration of the above problems, an object of the present invention is to install a detection device for detecting the reverse rotation of the drive shaft and the impeller inside the submersible pump, the magnetic field or heat generated during operation of the electric motor The present invention provides an submersible pump having a reverse rotation detection device which prevents a malfunction of the detection device by preventing the detection device from being damaged and prevents damage to the sensors constituting the detection device.

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명의 역회전 검출장치를 갖는 수중펌프는 일측 단부에 유체의 흡입 및 토출을 위한 임펠러가 구비된 구동축과, 상기 구동축의 회전을 지지하며 구동축을 회전시키는 전동모터가 내장된 하우징과, 상기 구동축의 회전상태를 검출하도록 하우징에 설치된 검출장치를 포함하는 수중펌프에 있어서, 상기 검출장치는, 비자성체로 이루어진 봉-형상의 부재로써, 구동축에 결합되어 구동축과 함께 회전하며, 상기 전동모터가 설치된 챔버(C1)의 상부에 마련된 또 다른 챔버(C2)의 내부로 연장되는 보조 회전축; 상기 보조 회전축과 결합되도록 챔버(C2)에 설치되어 보조 회전축의 회전상태를 검출하는 중공축형 엔코더; 및 상기 중공축형 엔코더와 전동모터의 사이에 위치하도록 설치되며, 비자성체로 이루어져 전동모터의 구동시 발생되는 자기장 및 열이 중공축형 엔코더로 전달되는 것을 차단하는 차폐판으로 구성된 것을 특징으로 한다.The submersible pump having a reverse rotation detection device of the present invention to achieve the above object and to perform a problem for eliminating the conventional drawback is a drive shaft with an impeller for suction and discharge of fluid at one end, and the drive shaft An underwater pump comprising a housing having a built-in electric motor for supporting the rotation of the drive shaft and rotating the drive shaft, and a detection device installed in the housing to detect the rotational state of the drive shaft. An auxiliary rotary shaft coupled to the drive shaft and rotates along with the drive shaft, extending into another chamber (C2) provided on top of the chamber (C1) in which the electric motor is installed; A hollow shaft encoder installed in the chamber C2 to be coupled to the auxiliary rotation shaft to detect a rotation state of the auxiliary rotation shaft; And a shielding plate installed between the hollow shaft encoder and the electric motor, the shielding plate being made of a nonmagnetic material to block a magnetic field and heat generated when the electric motor is driven to the hollow shaft encoder.

한편, 상기 중공축형 엔코더는 차폐판에 설치되고, 상기 차폐판은 챔버(C2)의 내부에 설치된다.On the other hand, the hollow shaft encoder is installed in the shield plate, the shield plate is installed inside the chamber (C2).

한편, 상기 보조 회전축은 구동축과 동일한 재질로 구성된다.On the other hand, the auxiliary rotation shaft is made of the same material as the drive shaft.

상기와 같은 특징을 갖는 본 발명에 의하면, 전동모터가 설치된 챔버와 격벽에 의해 구분된 다른 챔버에 역회전 검출장치를 구성함으로써 전동모터의 작동시 발생하는 자기장 및 열이 검출장치에 전달되는 것을 감소시킬 수 있게 되었고, 더욱이 차폐판이 자기장 및 열의 차단효과를 높여줌으로써 검출장치의 작동오류나 센서류의 손상을 방지할 수 있게 되었다.According to the present invention having the characteristics as described above, by configuring the reverse rotation detection device in the chamber in which the electric motor is installed and the partition wall separated by the magnetic field and heat generated during the operation of the electric motor to reduce the transfer to the detection device In addition, the shield plate can prevent the operation error of the detection device or damage to the sensors by increasing the shielding effect of the magnetic field and heat.

또한, 보조 회전축을 구동축과 동일한 STS 410 스테인레스강으로 구성함으로써 보조 회전축과 구동축의 연결부위에서 갈바닉 부식이 발생되는 것을 방지할 수 있게 되었다.In addition, by configuring the auxiliary rotating shaft made of the same STS 410 stainless steel as the drive shaft, it is possible to prevent the galvanic corrosion generated at the connection between the auxiliary rotating shaft and the drive shaft.

이하, 본 발명의 바람직한 실시 예를 첨부된 도면과 연계하여 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 바람직한 실시예에 따른 수중펌프의 단면도를, 도 2는 도 1의 'A'부 상세도를 도시하고 있다.1 is a cross-sectional view of a submersible pump according to a preferred embodiment of the present invention, Figure 2 is a detailed view 'A' portion of FIG.

본 발명은 구동축(110)의 회전상태를 감지함으로써 수중펌프의 비정상적인 작동여부를 검출하는 역회전 검출장치(140)를 수중펌프에 설치함에 있어서, 전동모터(130)로부터 발생되는 자기장이나 열이 검출장치에 전달되는 것을 최소화함으로써 검출장치의 신뢰성 및 내구성을 높여줄 수 있도록 한 것이다.The present invention detects the magnetic field or heat generated from the electric motor 130 when installing the reverse rotation detection device 140 in the water pump to detect the abnormal operation of the water pump by detecting the rotation state of the drive shaft 110 By minimizing the transmission to the device to increase the reliability and durability of the detection device.

한편 본 발명이 적용되는 수중펌프는 기본적으로 일측 단부에 유체의 흡입 및 토출을 위한 임펠러(111)가 설치된 구동축(110)과, 상기 구동축(110)을 회전 가능하게 지지하며 구동축(110)을 회전시키기 위한 전동모터(130)가 내장된 하우징(120)으로 구성되어 있다.Meanwhile, the submersible pump to which the present invention is applied basically supports a drive shaft 110 provided with an impeller 111 for suction and discharge of fluid at one end thereof, and rotatably supports the drive shaft 110 and rotates the drive shaft 110. It consists of a housing 120 is built in the electric motor 130 to.

이때 상기 하우징(120)은 전동모터(130)가 설치되는 챔버(C1)와, 임펠러(111)의 회전시 유체의 흡입 및 토출이 이루어지는 챔버(C3), 그리고 전동모터(130)의 제어를 위한 전기부품의 설치가 이루어지는 챔버(C2)를 구비하고 있으며, 본 발명은 전기부품의 설치가 이루어지는 챔버(C2)를 이용하여 검출장치를 구성함으로써 전동모터(130)로부터 발생되는 자기장이나 열에 의한 검출장치의 오류나 손상을 방지토록 한 것이다.In this case, the housing 120 includes a chamber C1 in which the electric motor 130 is installed, a chamber C3 in which fluid is sucked and discharged when the impeller 111 rotates, and a control of the electric motor 130. The present invention provides a chamber (C2) in which electrical components are installed, and the present invention comprises a detection device using a chamber (C2) in which electrical components are installed, thereby detecting a magnetic field or heat generated from the electric motor (130). To prevent errors or damages.

상기와 같이 전기부품의 설치가 이루어지는 챔버(C2)에 역회전 검출장치(140)를 구성하기 위하여 본 발명에 따른 역회전 검출장치(140)는 보조 회전축(141)과, 중공축형 엔코더(142)와, 차폐판(143)으로 구성되어 있다.In order to configure the reverse rotation detection device 140 in the chamber C2 where the electrical components are installed as described above, the reverse rotation detection device 140 according to the present invention includes an auxiliary rotation shaft 141 and a hollow shaft encoder 142. And the shielding plate 143.

상기 보조 회전축(141)은 구동축(110)에 결합되어 구동축(110)과 함께 회전하되, 상기 챔버(C2)로 연장되어 구동축(110)의 회전력을 검출장치로 전달하는 것으로, 봉-형상의 부재로 이루어지며 하단부가 구동축(110)에 나사결합되며, 상단부 는 전동모터(130)가 설치된 챔버(C1)의 상부에 위치한 챔버(C2)의 내부로 연장되게 설치된다. 이러한 보조 회전축(141)은 비자성체로 이루어지는 것이 바람직하며, 더욱 바람직하게는 구동축(110))과 동일한 STS 410 스테인레스강으로 구성된다.The auxiliary rotation shaft 141 is coupled to the drive shaft 110 to rotate together with the drive shaft 110, extends to the chamber (C2) to transfer the rotational force of the drive shaft 110 to the detection device, rod-shaped member The lower end is screwed to the drive shaft 110, the upper end is installed to extend into the interior of the chamber (C2) located in the upper portion of the chamber (C1) in which the electric motor 130 is installed. The auxiliary rotation shaft 141 is preferably made of a nonmagnetic material, more preferably made of the same STS 410 stainless steel as the drive shaft (110).

이와 같이 보조 회전축(141)을 구동축(110)과 동일한 재질로 구성함으로써, 보조 회전축(141)과 구동축(110)의 갈바닉 부식을 예방할 수 있으며, 검출장치로 전달되는 자기장을 감소시킬 수 있게 된다.As such, by configuring the auxiliary rotation shaft 141 with the same material as the driving shaft 110, galvanic corrosion of the auxiliary rotation shaft 141 and the driving shaft 110 can be prevented, and the magnetic field transmitted to the detection device can be reduced.

상기 중공축형 엔코더(142)는 보조 회전축(141)과 결합되도록 챔버(C2)에 설치되어 보조 회전축(141)의 회전상태를 검출함으로써, 결과적으로 구동축(110) 및 임펠러(111)의 회전상태를 검출하는 것이다. 이러한 중공축형 엔코더(142)은 중앙부로 보조 회전축(141)이 관통하도록 설치되어 보조 회전축(141)과 결합되며, 외부가 챔버(C2)에 고정된다.The hollow shaft encoder 142 is installed in the chamber (C2) to be coupled to the auxiliary rotary shaft 141 to detect the rotation state of the auxiliary rotary shaft 141, and as a result, the rotation state of the drive shaft 110 and the impeller 111 To detect. The hollow shaft encoder 142 is installed so that the auxiliary rotary shaft 141 penetrates to the center thereof, and is coupled to the auxiliary rotary shaft 141, and the outside thereof is fixed to the chamber C2.

한편 상기 중공축형 엔코더(142)는 주지 관용된 기술이므로 보다 상세한 설명은 생략하도록 한다.Meanwhile, since the hollow shaft encoder 142 is a well known technique, a detailed description thereof will be omitted.

상기와 같이 보조 회전축(141)을 이용하여 중공축형 엔코더(142)를 챔버(C2)에 설치토록 함으로써, 중공축형 엔코더(142)에 전달되는 자기장 및 열을 감소시킬 수 있으나, 자기장 및 열의 차단 효과를 높이기 위하여 차폐판(143)을 더 구비하는 것이 바람직하다.As described above, by installing the hollow shaft encoder 142 in the chamber C2 by using the auxiliary rotation shaft 141, the magnetic field and heat transmitted to the hollow shaft encoder 142 may be reduced, but the effect of blocking the magnetic field and heat may be reduced. It is preferable to further provide a shield plate 143 in order to increase the.

상기 차폐판(143)은 자기장을 효과적으로 차단하기 위하여 비자성체로 이루어지며, 중공축형 엔코더(142)와 전동모터(130)의 사이에 위치하도록 설치된다.The shielding plate 143 is made of a nonmagnetic material to effectively block a magnetic field, and is installed to be located between the hollow shaft encoder 142 and the electric motor 130.

상기와 같은 중공축형 엔코더(142)와 차폐판(143)을 단일체로 구성하게 되 면, 검출장치의 설치 및 유지,보수를 보다 용이하게 할 수 있으므로, 중공축형 엔코더(142)를 차폐판(143) 상에 설치하고, 차폐판(143)을 챔버(C2)에 고정하게 된다.When the hollow shaft encoder 142 and the shield plate 143 are configured as a single unit, the installation, maintenance, and repair of the detection apparatus can be made easier, and thus the hollow shaft encoder 142 is shielded from the shield plate 143. ), And the shielding plate 143 is fixed to the chamber C2.

상기와 같이 구성된 수중펌프의 경우, 전동모터(130)의 구동시 발생되는 자기장이나 열이 중공축형 엔코더(143)에 전달되기 위해서는 챔버(C1)과 챔버(C2)를 구분하는 격벽(131) 및 차폐판(143)을 통과해야만 하므로, 실질적으로 중공축형 엔코더(143)에 전달되는 자기장이나 열은 극히 미미하여 역회전 검출장치(140)의 오작동을 예방함과 더불어 내구성을 향상시킬 수 있게 된다.In the case of the submersible pump configured as described above, in order to transfer the magnetic field or heat generated when the electric motor 130 is driven to the hollow shaft encoder 143, the partition wall 131 for separating the chamber (C1) and the chamber (C2) and Since it must pass through the shield plate 143, substantially the magnetic field or heat transmitted to the hollow shaft type encoder 143 is extremely minimal to prevent the malfunction of the reverse rotation detection device 140 and to improve durability.

본 발명은 상술한 특정의 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

도 1 은 본 발명의 바람직한 실시예에 따른 수중펌프의 단면도,1 is a cross-sectional view of a submersible pump according to a preferred embodiment of the present invention,

도 2 는 도 1의 'A'의 상세도.FIG. 2 is a detailed view of 'A' of FIG. 1.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

(110) : 구동축 (111) : 임펠러110: drive shaft 111: impeller

(120) : 하우징 (130) : 전동모터120: housing 130: electric motor

(140) : 검출장치 (141) : 보조 회전축140: detecting device 141: auxiliary rotating shaft

(142) : 중공축형 엔코더 (143) : 차폐판(142): hollow shaft encoder (143): shielding plate

Claims (3)

일측 단부에 유체의 흡입 및 토출을 위한 임펠러(111)가 구비된 구동축(110)과, 상기 구동축(110)의 회전을 지지하며 구동축(110)을 회전시키는 전동모터(130)가 내장된 하우징(120)과, 상기 구동축(110)의 회전상태를 검출하도록 하우징(120)에 설치된 검출장치(140)를 포함하는 수중펌프에 있어서,A housing having a drive shaft 110 having an impeller 111 for suction and discharge of fluid at one end thereof, and an electric motor 130 supporting the rotation of the drive shaft 110 and rotating the drive shaft 110 ( In the submersible pump including a 120, and the detection device 140 installed in the housing 120 to detect the rotation state of the drive shaft 110, 상기 검출장치(140)는, 비자성체로 이루어진 봉-형상의 부재로써, 구동축(110)에 결합되어 구동축과 함께 회전하며, 상기 전동모터(130)가 설치된 챔버(C1)의 상부에 마련된 또 다른 챔버(C2)의 내부로 연장되는 보조 회전축(141);The detection device 140 is a rod-shaped member made of a nonmagnetic material, which is coupled to the drive shaft 110 to rotate together with the drive shaft, and is provided on the upper portion of the chamber C1 in which the electric motor 130 is installed. An auxiliary rotation shaft 141 extending into the chamber C2; 상기 보조 회전축(141)과 결합되도록 챔버(C2)에 설치되어 보조 회전축(141)의 회전상태를 검출하는 중공축형 엔코더(142); 및A hollow shaft encoder 142 installed in the chamber C2 to be coupled to the auxiliary rotation shaft 141 to detect a rotation state of the auxiliary rotation shaft 141; And 상기 중공축형 엔코더(142)와 전동모터(130)의 사이에 위치하도록 설치되며, 비자성체로 이루어져 전동모터(130)의 구동시 발생되는 자기장 및 열이 중공축형 엔코더(142)로 전달되는 것을 차단하는 차폐판(143)으로 구성된 것을 특징으로 하는 역회전 검출장치를 갖는 수중펌프.Installed between the hollow shaft encoder 142 and the electric motor 130, it is made of a non-magnetic material to block the magnetic field and heat generated when the electric motor 130 is driven to the hollow shaft encoder (142) Submersible pump having a reverse rotation detection device characterized in that consisting of a shield plate (143). 제 1 항에 있어서,The method of claim 1, 상기 중공축형 엔코더(142)는 차폐판(143)에 설치되고, 상기 차폐판(143)은 챔버(C2)의 내부에 설치된 것을 특징으로 하는 역회전 검출장치를 갖는 수중펌프.The hollow shaft type encoder 142 is installed in the shield plate 143, the shield plate 143 is an underwater pump having a reverse rotation detection device, characterized in that installed in the chamber (C2). 제 1 항에 있어서,The method of claim 1, 상기 보조 회전축(141)은 구동축(110)과 동일한 재질로 구성된 것을 특징으로 하는 역회전 검출장치를 갖는 수중펌프.The auxiliary rotation shaft 141 is a submersible pump having a reverse rotation detection device, characterized in that made of the same material as the drive shaft (110).
KR1020090067195A 2009-07-23 2009-07-23 Water pump with reverse-rotation detecter KR100922531B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101716840B1 (en) 2016-12-20 2017-03-16 주식회사 두크 Centrifugal pump having means for detecting rotation direction using wind
KR101940562B1 (en) * 2018-10-24 2019-01-21 대웅기업주식회사 Submersible Motor Pump

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001213336A (en) 2000-02-02 2001-08-07 Moric Co Ltd Electric hydraulic power steering device
JP2003003985A (en) 2001-06-21 2003-01-08 Mitsubishi Heavy Ind Ltd Submerged pump, and pumping-up and draining pump facility
KR200409015Y1 (en) 2005-12-05 2006-02-20 제일기계공업주식회사 Tilt Vibration Analysis Device of Axial Flow Pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001213336A (en) 2000-02-02 2001-08-07 Moric Co Ltd Electric hydraulic power steering device
JP2003003985A (en) 2001-06-21 2003-01-08 Mitsubishi Heavy Ind Ltd Submerged pump, and pumping-up and draining pump facility
KR200409015Y1 (en) 2005-12-05 2006-02-20 제일기계공업주식회사 Tilt Vibration Analysis Device of Axial Flow Pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101716840B1 (en) 2016-12-20 2017-03-16 주식회사 두크 Centrifugal pump having means for detecting rotation direction using wind
KR101940562B1 (en) * 2018-10-24 2019-01-21 대웅기업주식회사 Submersible Motor Pump

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