KR200328187Y1 - Ejecter - Google Patents

Ejecter Download PDF

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Publication number
KR200328187Y1
KR200328187Y1 KR20-2003-0016481U KR20030016481U KR200328187Y1 KR 200328187 Y1 KR200328187 Y1 KR 200328187Y1 KR 20030016481 U KR20030016481 U KR 20030016481U KR 200328187 Y1 KR200328187 Y1 KR 200328187Y1
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KR
South Korea
Prior art keywords
pipe body
ejector
inlet
nozzle neck
pressure air
Prior art date
Application number
KR20-2003-0016481U
Other languages
Korean (ko)
Inventor
전완열
Original Assignee
삼성중공업 주식회사
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Priority to KR20-2003-0016481U priority Critical patent/KR200328187Y1/en
Application granted granted Critical
Publication of KR200328187Y1 publication Critical patent/KR200328187Y1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00Pipe-line systems
    • F17D1/02Pipe-line systems for gases or vapours
    • F17D1/065Arrangements for producing propulsion of gases or vapours
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F04F5/20Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating
    • F04F5/22Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating of multi-stage type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity

Abstract

개시된 내용은 이젝터에 주입되는 고압공기의 양을 노즐목조절관을 이용하여 유효적절하게 조절함으로써 유입구측으로부터 유입되는 유량을 조절할 수 있는 이젝터에 관한 것이다.The present disclosure relates to an ejector capable of controlling the flow rate flowing from the inlet side by effectively adjusting the amount of high pressure air injected into the ejector by using a nozzle neck control tube.

이 이젝터는 배출구를 향해 고압공기를 주입하여 흡입구측으로부터 공기가 유입되게 하는 이젝터에 있어서, 내측으로 암나사(14)가 형성된 흡입구(12)가 형성되고, 선단의 외주면에는 고압공기가 주입되는 주입구(16)가 형성된 흡입관체(10);와 상기 흡입관체(10)의 측부에 체결되며, 내측으로 배출구(22)가 형성된 배출관체(20); 및 상기 흡입관체(10)의 암나사(14)에 대응하는 숫나사(34)가 외측에 형성된 노즐목조절관(30)을 포함하여 달성된다.The ejector is an ejector for injecting high pressure air toward the outlet to allow air to flow from the inlet, and an inlet 12 having an internal thread 14 formed therein is formed, and an inlet for injecting high pressure air to the outer circumferential surface of the tip ( A suction pipe body (16) formed thereon; and a discharge pipe body (20) fastened to the side of the suction pipe body (10) and having an outlet opening (22) therein; And a male screw 34 corresponding to the female thread 14 of the suction pipe body 10 is achieved by including a nozzle neck control tube 30 formed on the outside.

본 고안 이젝터는 흡입구에 형성된 암나사에 노즐목조절관이 체결되어 회전하면서 전후진하도록 구성되어 노즐목의 크기를 조절하는 것이 용이하고, 공기압의 증대를 위하여 주입구를 다수개 형성하였으며, 배출구의 배출측 내경을 크게 하여 유체가 원활하게 배출되게 한 것이다.The ejector of the present invention is configured to fasten forward and backward as the nozzle neck control tube is fastened to the female screw formed at the suction port, so that it is easy to control the size of the nozzle neck, and a plurality of inlets are formed to increase the air pressure. The inner diameter is enlarged to allow the fluid to be discharged smoothly.

Description

이젝터{Ejecter}Ejector {Ejecter}

본 고안 이젝터는 고압공기를 이용하여 흡입구측의 유체를 빨아들여 배출구로 이동시키는 것으로, 이 고압공기가 분출되는 노즐목의 크기를 나사체결된 노즐목조절관으로 조절하여 유량과 유속을 용이하게 조절할 수 있으며, 공기압의 증대를 위하여 주입구를 다수개 형성하고, 배출구의 배출측내경이 크게형성되어 유체가 원활하게 배출되는 이젝터에 관한 것이다.The ejector of the present invention sucks the fluid on the inlet side by using high pressure air and moves it to the outlet. The size of the nozzle neck from which the high pressure air is ejected is controlled by a screwed nozzle neck control tube to easily control the flow rate and flow rate. It can be, and to form a plurality of inlet to increase the air pressure, and the discharge side inner diameter of the discharge port is formed to the ejector to smoothly discharge the fluid.

일반적으로, 환기가 잘 이루어지지 않는 육상 구조물의 탱크 내부작업 또는 선박의 탱크 내부작업, 지하공사작업, 각종 맨홀작업등에는 작업자의 안전을 위해 작업장 내부의 오염된 공기를 배출시키면서 외부의 신선한 공기를 주입시키기 위하여 팬(Fan)이나 블로우(Blower)를 사용한다. 하지만, 상기와 같은 팬이나 블로우는 가스폭발 위험이 있는 곳에서는 사용이 불가능할 뿐만 아니라 설치 및 제거작업이 용이하지 못한 문제점들이 있다.In general, in the tank work of the land structure that is not well ventilated, the tank work of the ship, the underground construction work, various manhole work, etc., for the safety of the workers, while draining the polluted air inside the workplace, Use a fan or blower to inject. However, the fan or blow as described above is not only available in a place where there is a risk of gas explosion, but also there is a problem that installation and removal work is not easy.

이와 같은 문제를 해결하기 위한 종래의 기술로서는 국내 실용실안등록 제 148135호(고압공기를 이용한 배기,흡기장치)가 있다. 상기 선행기술은 2-웨이밸브의 작동에 의해 고압의 공기가 좌측의 관체속 에어가이드(센터 가이드) 쪽으로 진입되면서 통기구멍과 관통부를 통해 배기되면 우측의 관체족에서 흡입된 공기가 사이펀의 원리에 의해 좌측의 관체를 통해 배기되고, 2-웨이밸브를 반대쪽으로 작동시키면 공기가 좌측의 관체를 통해 진입되어 우측의 관체를 통해 배기될 수 있도록 구성된 것이다.Conventional technology for solving such a problem is domestic utility model registration No. 148135 (exhaust, intake apparatus using high pressure air). According to the prior art, when the high-pressure air enters the air pipe (center guide) on the left side by the operation of the 2-way valve and is exhausted through the vent hole and the through part, the air sucked in the pipe body on the right side is based on the principle of siphon. It is exhausted through the tube on the left side, and when the two-way valve is operated in the opposite direction is configured to allow air to enter through the tube on the left side and exhaust through the tube on the right side.

여기서, 상기와 같이 구성된 선행기술은 관체 내부에 센터 가이드가 설치되어 있다. 하지만 상기 선행기술에 사용되고 있는 센터 가이드는 단순히 관로를 형성하여 공기의 유로를 만드는 수단에 불과하기 대문에 상기 관로를 따라 흐르는 유체의 양을 조절할 수 없는 문제점이 있다.Here, the prior art configured as described above is provided with a center guide inside the tube. However, since the center guide used in the prior art is merely a means for forming a flow path by simply forming a pipe, there is a problem in that the amount of fluid flowing along the pipe cannot be adjusted.

상기와 같은 문제점을 해결하기 위하여 본 고안의 이젝터 장치는 흡입관체의 내측으로 나사체결된 노즐목조절관의 정역회전을 통해 전후진시키면서 고압공기가 주입되는 노즐목을 확장 또는 축소시켜 노즐목의 단면적을 조절하여 흡입구를 통해 흡입되는 유체의 속도와 유량을 간편하게 제어할 수 있는 이젝터를 제공하는데 그 목적이 있다.In order to solve the above problems, the ejector device of the present invention extends or contracts the nozzle neck into which the high-pressure air is injected while forward and backward through the forward and reverse rotation of the nozzle neck control tube screwed into the suction pipe body. The purpose of the present invention is to provide an ejector that can easily control the speed and flow rate of the fluid sucked through the inlet.

또한, 상기의 노즐목조절관이 나사체결되어 회전에 의해 전후진하게 되므로 미세조절이 가능하며, 상기 흡입관체와 배출관체의 결합부에 고무링을 삽입하여 결합부에서 고압공기가 누출되는 것을 방지하고, 배출구의 유입측보다 배출측의 내경이 크게 하여 유체가 원활하게 배출되게 하는 이젝터를 제공하는데에도 그 목적이 있는 것이다.In addition, the nozzle neck control tube is screwed and moved forward and backward by rotation, fine adjustment is possible, by inserting a rubber ring in the coupling portion of the suction pipe and the discharge pipe to prevent high pressure air from leaking from the coupling portion. It is also an object of the present invention to provide an ejector in which the inner diameter of the discharge side is larger than the inlet side of the discharge port so that the fluid can be discharged smoothly.

도 1은 본 고안 이젝터의 사시도,1 is a perspective view of the ejector of the present invention,

도 2는 본 고안 이젝터의 분해사시도,2 is an exploded perspective view of the ejector of the present invention,

도 3은 본 고안 이젝터의 단면도,3 is a cross-sectional view of the ejector of the present invention,

도 4는 본 고안 이젝터의 작용단면도이다.4 is a cross-sectional view of the operation of the ejector of the present invention.

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

10:흡입관체 12:암나사10: suction pipe 12: female thread

14:흡입구 16:주입구14: intake 16: inlet

20:배출관체 22:배출구20: exhaust pipe 22: outlet

22a:유입측 22b:배출측22a: inflow side 22b: discharge side

24:테이퍼 26:결합부24: taper 26: coupling portion

28:고무링 30:노즐목조절관28: rubber ring 30: nozzle neck control tube

32:숫나사 34:경사면32: Male thread 34: Inclined surface

상기의 목적을 달성하기 위한 본 고안 이젝터, 배출구를 향해 고압공기를 주입하여 흡입구측으로부터 공기가 유입되게 하는 이젝터에 있어서, 내측으로 암나사가 형성된 흡입구가 형성되고, 선단의 외주면에는 고압공기가 주입되는 주입구가 한개이상 형성된 흡입관체;와, 상기 흡입관체의 측부에 체결되며, 내측으로 배출구가 형성된 배출관체;및, 상기 흡입관체의 암나사와 체결되도록 외측에 숫나사가 형성된 중공관 형태의 노즐목조절관;을 포함하는 것을 특징으로 하는 이젝터를 제공함으로써 달성된다.In order to achieve the above object, the present invention ejector, the ejector for injecting high-pressure air toward the outlet to allow air to flow from the inlet, the inlet is formed with a female thread inward, the high-pressure air is injected into the outer peripheral surface of the tip A suction pipe body formed with at least one injection hole; and a discharge pipe body fastened to a side of the suction pipe body, and formed with a discharge hole inwardly; and a hollow tube-type nozzle neck control pipe having a male thread formed at an outer side thereof so as to be engaged with a female screw of the suction pipe body. It is achieved by providing an ejector comprising a.

여기서, 상기 배출관체는 배출구의 선단에 테이퍼가 형성되고, 상기 노즐목조절관은 선단에 상기 배출관체의 테이퍼와 면접촉하도록 경사면이 형성된다.Here, the discharge pipe body is formed with a taper at the tip of the discharge port, the nozzle neck control tube is formed with an inclined surface to the surface contact with the taper of the discharge pipe body at the tip.

한편, 상기 배출관체의 배출구는 유입측으로부터 배출측으로 내경이 일정비율로 커지도록 형성하는 것이 바람직하다.On the other hand, the discharge port of the discharge pipe is preferably formed so that the inner diameter is increased at a constant ratio from the inlet side to the discharge side.

이하, 본 고안 이젝터의 바람직한 실시예를 첨부도면을 참조하여 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention ejector will be described in detail with reference to the accompanying drawings.

첨부도면중 도 1은 본 고안 이젝터의 사시도이고, 도 2는 본 고안 이젝터의 분해사시도이며, 도 3은 본 고안 이젝터의 결합단면도이다.1 is a perspective view of the ejector of the present invention, Figure 2 is an exploded perspective view of the ejector of the present invention, Figure 3 is a combined cross-sectional view of the ejector of the present invention.

상기의 도면에서 도시하는 본 고안 이젝터는 배출구를 향해 고압공기를 주입하여 흡입구측으로부터 공기가 유입되게 하는 것으로, 유체가 흡입되는 흡입관체(10)와, 이 흡입관체(10)의 일측에 체결되어 흡입된 유체가 배출되는 배출관체(20)와, 상기 흡입관체(10)의 내부에 삽입되어 고압공기의 주입량을 조절하는 노즐목조절관(30)으로 이루어진다.The ejector of the present invention shown in the drawings is to inject high-pressure air toward the outlet port to allow air to flow from the inlet port side, and the suction pipe body 10 into which fluid is sucked, and is coupled to one side of the suction pipe body 10. It consists of a discharge pipe 20 through which the sucked fluid is discharged, and a nozzle neck control pipe 30 inserted into the suction pipe 10 to adjust the injection amount of the high pressure air.

상기 흡입관체(10)는 후단에 내측으로 암나사(14)가 형성된 흡입구(12)가 형성되고, 선단의 외주면에는 고압공기가 주입되는 주입구(16)가 다수개가 형성된다.The suction pipe body 10 has a suction port 12 having a female screw 14 formed inward at a rear end thereof, and a plurality of injection holes 16 through which high pressure air is injected are formed at the outer circumferential surface of the tip.

상기 배출관체(20)는 상기 흡입관체(10)의 일측에 체결되며, 내부에 형성되는 배출구(22)는 선단에 테이퍼(24)가 형성되고, 유입측(22a)으로부터 배출측(22b)으로 내경이 일정비율 커지도록 형성된다. 또한, 흡입관체(10)와의 결합부(26)에 기밀성을 유지하기 위하여 고무링(28)을 삽입한다.The discharge pipe body 20 is fastened to one side of the suction pipe body 10, the discharge port 22 formed therein is formed with a taper 24 at the tip, from the inlet side 22a to the discharge side 22b The inner diameter is formed to increase a certain ratio. In addition, the rubber ring 28 is inserted to maintain the airtightness in the coupling portion 26 with the suction pipe body (10).

상기 노즐목조절관(30)은 상기 흡입관체(10) 흡입구(12)의 암나사(14)에 대응하는 숫나사(32)가 외측으로 형성되고, 선단은 상기 배출관체(20)의 배출구(22)선단에 형성된 테이퍼(24)와 면접촉하도록 경사면(34)이 형성된다.The nozzle neck control pipe 30 has a male screw 32 corresponding to the female screw 14 of the suction pipe body 12, the suction port 12 is formed to the outside, and the tip of the nozzle neck control pipe 30 has a discharge port 22 of the discharge pipe body 20. An inclined surface 34 is formed to be in surface contact with the taper 24 formed at the tip.

이하, 상기의 구성을 갖는 본 고안 이젝터의 구체적인 작용을 설명한다.Hereinafter, the specific action of the present invention ejector having the above configuration.

첨부도면 도 4는 본 고안 이젝터의 작용을 나타내는 작용단면도이다.4 is a cross-sectional view showing the action of the ejector of the present invention.

상기 도면에서 도시하는 바와 같이, 흡입관체(10)의 주입구(16)를 통해 주입되는 고압공기가 노즐목조절관(30)의 선단에 형성된 경사면(34)와 배출구(22)의 테이퍼(24)사이에 형성되는 노즐목(40)을 통해 배출관(22)의 유입측(22a)으로 주입되어 배출측(22b)으로 흐르게 되면, 배출관(22)과 흡입관(12)의 압력 및 속도의 차이로인한 사이펀(Siphon)작용으로 흡입구(12)측의 유체가 빨려들어와 배출구(22)를 통해 배출된다. 이러한 유체의 흡입속도 및 흡입량은 노즐목(40)을 통해 배출구(22)로 주입되는 주입공기의 주입량에 의해 조절된다.As shown in the figure, the high-pressure air injected through the inlet 16 of the suction pipe body 10, the tapered 24 of the inclined surface 34 and the discharge port 22 formed at the tip of the nozzle neck control pipe 30 When injected into the inlet side 22a of the discharge pipe 22 and flows to the discharge side 22b through the nozzle neck 40 formed therebetween, due to the difference in pressure and speed of the discharge pipe 22 and the suction pipe 12 The siphon (Siphon) action is sucked into the fluid on the inlet 12 side and is discharged through the outlet 22. The suction speed and the suction amount of the fluid are controlled by the injection amount of the injection air injected into the outlet 22 through the nozzle neck 40.

이는, 흡입관체(10)의 외주면에 복수개의 주입구(16)를 형성시켜 고압공기를 주입시키고, 배출구(22)의 테이퍼(24)와 노즐목조절관(30)의 선단에 형성된 경사면(34)사이에 형성되어 고압공기가 주입되는 노즐목(40)을 흡입관체(10)의 내측으로 나사체결된 노즐목조절관(30)의 정역회전을 통해 전후진시키면서 확장 또는 축소시켜 노즐목(40)의 단면적을 조절함으로써 노즐목(40)을 통해 배출구(22)로 주입되는 고압공기의 주입량을 조절하는 것이다. 이와같이 고압공기의 주입량을 조절함으로써 흡입구(12)를 통해 흡입되는 유체의 흡입속도와 흡입유량을 제어하는 것이다.It forms a plurality of inlets 16 on the outer circumferential surface of the suction pipe body 10 to inject high pressure air, and the inclined surface 34 formed at the tip of the taper 24 and the nozzle neck control tube 30 of the outlet 22. The nozzle neck 40 is formed therebetween by expanding or contracting the nozzle neck 40 into which the high pressure air is injected through the forward and reverse rotation of the nozzle neck control tube 30 screwed into the suction pipe body 10. By adjusting the cross-sectional area of the injection throat of the high-pressure air injected into the outlet 22 through the nozzle neck (40). As such, by adjusting the injection amount of the high pressure air, the suction speed and the suction flow rate of the fluid sucked through the suction port 12 are controlled.

그리고, 노즐목조절관(30)의 숫나사(32)가 흡입관체(10)의 흡입구(12) 내측에 형성된 암나사(14)에 나사체결되어 회전에 의해 전후진하게 되므로 노즐목(40)의 단면적을 미세하게 조절할 수 있으며, 상기 흡입관체(10)의 측부에 면접하는 배출관체(20)의 결합부(26)에 고무링(28)을 삽입하여 결합부(26)에서 고압공기가 누출되는 것을 방지하고, 배출구(22)의 유입측(22a)보다 배출측(22b)의 내경을 크게 하여 유체가 원활하게 배출되게 하는 장점이 있다.In addition, the male screw 32 of the nozzle neck control tube 30 is screwed into the female thread 14 formed inside the suction port 12 of the suction pipe body 10 so as to be moved back and forth by rotation, thereby reducing the cross-sectional area of the nozzle neck 40. Fine adjustment can be made, and the rubber ring 28 is inserted into the coupling part 26 of the discharge pipe body 20 which is interviewed on the side of the suction pipe body 10 to prevent the high pressure air from leaking from the coupling part 26. In addition, there is an advantage that the fluid is smoothly discharged by increasing the inner diameter of the discharge side 22b than the inlet side 22a of the discharge port 22.

상기한 바와 같이 본 고안 이젝터는, 흡입관체의 내측으로 나사체결된 노즐목조절관의 정역회전을 통해 전후진시키면서 고압공기가 주입되는 노즐목을 확장 또는 축소시켜 노즐목의 단면적을 조절하여 흡입구를 통해 흡입되는 유체의 속도와 유량을 간편하게 제어할 수 있는 효과가 있다.As described above, the ejector of the present invention expands or contracts the nozzle neck into which the high-pressure air is injected while moving forward and backward through the forward and reverse rotation of the nozzle neck control tube screwed into the suction pipe body, thereby adjusting the cross-sectional area of the nozzle neck to adjust the suction port. There is an effect that can easily control the speed and flow rate of the fluid sucked through.

또한, 상기의 노즐목조절관이 나사체결되어 회전에 의해 전후진하게 되므로 미세조절이 가능하며, 상기 흡입관체와 배출관체의 결합부에 고무링을 삽입하여 결합부에서 고압공기가 누출되는 것을 방지하고, 배출구의 유입측보다 배출측의 내경이 크게 하여 유체가 원활하게 배출되는 효과가 있다.In addition, the nozzle neck control tube is screwed and moved forward and backward by rotation, fine adjustment is possible, by inserting a rubber ring in the coupling portion of the suction pipe and the discharge pipe to prevent high pressure air from leaking from the coupling portion. The inner diameter of the discharge side is larger than the inlet side of the discharge port, so that the fluid can be discharged smoothly.

Claims (3)

배출구를 향해 고압공기를 주입하여 흡입구측으로부터 공기가 유입되게 하는 이젝터에 있어서,In the ejector for injecting high-pressure air toward the discharge port to allow air to flow from the suction port side, 내측으로 암나사(14)가 형성된 흡입구(12)가 형성되고, 선단의 외주면에는 고압공기가 주입되는 주입구(16)가 한개이상 형성된 흡입관체(10);An inlet 12 having an internal thread 14 formed therein, and an inlet tube 10 having at least one inlet 16 through which high pressure air is injected into an outer circumferential surface of the tip; 상기 흡입관체(10)의 측부에 체결되며, 내측으로 배출구(22)가 형성된 배출관체(20);및,A discharge pipe body 20 which is fastened to the side of the suction pipe body 10 and has an outlet 22 formed therein; and, 상기 흡입관체(10)의 암나사(14)와 체결되도록 외측에 숫나사(34)가 형성된 중공관 형태의 노즐목조절관(30);을 포함하는 것을 특징으로 하는 이젝터.And a nozzle neck control tube (30) in the form of a hollow tube having a male screw (34) formed on an outer side thereof so as to be engaged with the female screw (14) of the suction pipe body (10). 제 1항에 있어서,The method of claim 1, 상기 배출관체(20)는 배출구(22)의 선단에 테이퍼(24)가 형성되고, 상기 노즐목조절관(30)은 선단에 상기 배출관체(20)의 테이퍼(24)와 면접촉하도록 경사면(34)이 형성되는 것을 특징으로 하는 이젝터.The discharge pipe body 20 has a taper 24 formed at the tip of the discharge port 22, the nozzle neck control pipe 30 is inclined to the surface contact with the taper 24 of the discharge pipe body 20 ( 34) is formed. 제 1항에 있어서,The method of claim 1, 상기 배출관체(20)의 배출구(22)는 유입측(22a)으로부터 배출측(22b)으로 내경이 일정비율로 커지도록 형성하는 것을 특징으로 하는 이젝터.Ejector, characterized in that the outlet 22 of the discharge pipe 20 is formed so that the inner diameter is increased at a constant ratio from the inlet side (22a) to the discharge side (22b).
KR20-2003-0016481U 2003-05-27 2003-05-27 Ejecter KR200328187Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160047777A (en) * 2014-10-23 2016-05-03 주식회사 비에스에이 Decompression apparatus for electrical power consumption of vacuum pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160047777A (en) * 2014-10-23 2016-05-03 주식회사 비에스에이 Decompression apparatus for electrical power consumption of vacuum pump
KR101632591B1 (en) 2014-10-23 2016-06-21 주식회사 비에스에이 Decompression apparatus for electrical power consumption of vacuum pump

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