KR100860104B1 - Contactless displacement type fuel pump for l p g vehicle with lubricant isolation structure - Google Patents

Contactless displacement type fuel pump for l p g vehicle with lubricant isolation structure Download PDF

Info

Publication number
KR100860104B1
KR100860104B1 KR1020070084193A KR20070084193A KR100860104B1 KR 100860104 B1 KR100860104 B1 KR 100860104B1 KR 1020070084193 A KR1020070084193 A KR 1020070084193A KR 20070084193 A KR20070084193 A KR 20070084193A KR 100860104 B1 KR100860104 B1 KR 100860104B1
Authority
KR
South Korea
Prior art keywords
piston
pump
pump body
piston rod
lubricant
Prior art date
Application number
KR1020070084193A
Other languages
Korean (ko)
Inventor
윤의수
최상규
박무룡
문정기
Original Assignee
한국기계연구원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국기계연구원 filed Critical 한국기계연구원
Priority to KR1020070084193A priority Critical patent/KR100860104B1/en
Priority to JP2010521784A priority patent/JP5054819B2/en
Priority to PCT/KR2008/004873 priority patent/WO2009025505A1/en
Application granted granted Critical
Publication of KR100860104B1 publication Critical patent/KR100860104B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
    • F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/043—Arrangements for driving reciprocating piston-type pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/12—Feeding by means of driven pumps fluid-driven, e.g. by compressed combustion-air
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)

Abstract

A contactless positive displacement type fuel pump for LPG vehicles is provided to generate pressure without the reduction of pump performance by using a contactless piston structure, thus increasing the life span of the pump and improving durability, and to prevent friction between a piston and a pump body by using a linear bearing, thus keeping pressure constant. A contactless positive displacement type fuel pump for LPG vehicles having a lubricant isolation structure includes a pump body(200) which has an inlet(210) and an outlet(220) at predetermined positions. A piston(300) is mounted to the pump body to generate pressure in the pump body. A linear motor(400) is coupled to a piston rod(320) to reciprocate the piston. Bearings are provided on opposite sides of the linear motor to firmly support the piston rod in a radial direction and secure the reciprocating piston to a predetermined position. A diaphragm(500) is positioned between the bearing and the piston to seal a lubricant(600) filled in the pump and provide softness to the reciprocating piston rod in an axial direction. The piston rod is mounted to a rotor(410) of the liner motor.

Description

윤활제 격리 구조를 갖는 ＬＰＧ자동차용 비접촉식 용적형 연료펌프{Contactless Displacement Type Fuel Pump For L P G Vehicle With Lubricant Isolation Structure}Contactless Displacement Type Fuel Pump For L P G Vehicle With Lubricant Isolation Structure}

본 발명은 LPG차량의 용적형 연료펌프에서 낮은 LPG 점도에 의해 나타나는 기계마모 및 압력저하로 인한 펌프효율저하, 그리고 LPG차량의 터보형펌프의 문제점인 캐비테이션에 의한 진동과 소음, 침식에 의한 기기 내부손상과 같은 문제점을 방지할 수 있으며, 아울러 피스톤로드와 베어링간의 마찰을 최소화하기 위해 내부에 윤활제를 충진시키되, 충진된 윤활제를 LPG연료 펌핑 공간부와 격리시켜 윤활제가 소진되는 것과 윤활제가 LPG와 섞이는 것을 방지할 수 있는 구조의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프에 관한 것이다.The present invention is the internal damage caused by vibration, noise, and erosion caused by cavitation, which is a problem of the LPG vehicle in the volumetric fuel pump due to the low LPG viscosity, the mechanical efficiency and pressure drop, and the turbo pump of the LPG vehicle. It is possible to prevent such problems, and also to fill the lubricant inside to minimize the friction between the piston rod and the bearing, and to separate the filled lubricant from the LPG fuel pumping space and to prevent the lubricant from running out and mixing the lubricant with LPG. It relates to a non-contact volume fuel pump for LPG vehicles having a lubricant isolation structure of a preventable structure.

일반적으로 LPG 차량의 연료펌프는 크게 용적형 펌프와, 터보형(원심형, 재생형)펌프로 구성된다.In general, the fuel pump of an LPG vehicle is mainly composed of a volumetric pump and a turbo type (centrifugal, regenerative) pump.

하지만 LPG 연료는 일반 휘발류나 디젤과는 달리 그 특성상 점도와 증기압이 매우 낮다.However, LPG fuel, unlike ordinary gasoline or diesel, has very low viscosity and vapor pressure due to its characteristics.

낮은 점도 때문에 LPG 연료에 용적형 펌프를 사용할 경우에는 기계마모에 따른 누출 및 압력저하로 점차적으로 펌프의 유량, 압력, 효율 등 성능이 크게 떨어지는 문제점이 발생된다.Due to the low viscosity, when the volumetric pump is used for LPG fuel, there is a problem that the performance of the pump gradually decreases due to leakage and pressure drop due to mechanical wear.

터보형 펌프를 사용할 경우에도, 낮은 증기압 때문에 펌프의 입구측에서 압력이 감소하여 캐비테이션(공동화현상) 발생에 따른 진동과 소음이 증대될 뿐만 아니라 내부 침식에 따른 기기의 손상이 발생되는 문제점이 있다.Even when a turbo type pump is used, the pressure decreases at the inlet side of the pump due to the low vapor pressure, thereby increasing vibration and noise caused by cavitation (cavitation), as well as damaging the device due to internal erosion.

이로 인해 최종적으로 차량의 연료공급을 적절히 조절하지 못하므로써 LPG 차량의 출력이 저하되는 문제점이 있었다.As a result, there is a problem in that the output of the LPG vehicle is lowered by not properly adjusting the fuel supply of the vehicle.

따라서 캐비테이션현상이 발생되지 않고 펌핑효율이 좋은 용적형 연료펌프를 사용하되, LPG 연료펌프의 문제점인 기계마모를 없애 일정한 압력을 발생시키고 내구성과 신뢰성을 향상시킬 수 있는 비접촉식 연료펌프가 요구되고 있는 실정이다. Therefore, there is a need for a non-contact fuel pump that can use a volumetric fuel pump with good pumping efficiency without cavitation and to generate constant pressure by eliminating mechanical wear, which is a problem of LPG fuel pumps. to be.

본 발명은 상기와 같은 문제점을 감안하여 안출된 것으로, 본 발명은 일측에 흡/토출구가 장착된 펌프몸체;와, 상기 펌프몸체로 압력을 발생시킬 수 있도록 상 기 펌프몸체에 축설되는 피스톤;과, 상기 피스톤을 왕복운동시킬 수 있도록 피스톤로드에 결합되는 리니어모터;와, 상기 피스톤로드를 반경방향으로 강하게 지지하여 상기 펌프몸체 내에서 왕복운동하는 피스톤을 일정한 반경반향 위치에 고정시킬 수 있도록 리니어모터의 양측에 배치되는 베어링; 및 내부에 충진되는 윤활제를 가두어두고 왕복운동하는 피스톤로드에 유연성을 부여하기 위해 베어링과 피스톤의 사이에 배치되는 다이어프램;을 포함하여 구성되는 것을 특징으로 하는 LPG자동차용 비접촉식 용적형 연료펌프를 제공하는 것이다. The present invention has been made in view of the above problems, the present invention is a pump body equipped with an intake / discharge port on one side; and the piston is built in the pump body to generate pressure to the pump body; And A linear motor coupled to the piston rod to reciprocate the piston; and a linear motor to strongly support the piston rod in a radial direction to fix the piston reciprocating in the pump body at a constant radial position. Bearings disposed on both sides of the bearing; And a diaphragm disposed between the bearing and the piston to impart flexibility to the piston rod reciprocating and confining the lubricant filled therein, thereby providing a non-contact volume fuel pump for an LPG vehicle. will be.

본 발명에 따른 LPG자동차용 비접촉식 용적형 연료펌프는, LPG차량의 용적형 연료펌프에서 나타나는 기계마모에 따른 압력저하로 인해 펌프의 성능이 저하되는 문제점을 비접촉식 피스톤 구조에 따라 펌프의 성능이 저하됨이 없이 항시적으로 압력을 발생할 수 있어 기기의 수명을 영구적으로 하고 더불어 내구성이 향상되는 특징이 있다. Non-contact volumetric fuel pump for LPG vehicle according to the present invention, the performance of the pump is deteriorated due to the pressure drop due to the mechanical wear appearing in the volumetric fuel pump of LPG vehicle, the performance of the pump is deteriorated according to the non-contact piston structure It can generate pressure at all times without permanently making the life of the device permanent and improving durability.

또한 선형베어링을 통해 자중, 펌핑하중 및 외부충격에 의해 피스톤이 펌프몸체에 마찰되는 것을 방지할 수 있어 압력저하 없이 압력이 일정한 장점이 있다.In addition, the linear bearing can prevent the piston from rubbing the pump body due to its own weight, the pumping load and the external impact, there is an advantage that the pressure is constant without reducing the pressure.

또한 내부에 다이어프램을 구비하여 충진제를 격리시켜 피스톤로드와 베어링간의 마찰을 최소화할 수 있으며, 더불어 피스톤로드에 유연성을 부여하여 작은 전력으로 큰 출력을 나타낼 수 있는 장점이 있다.In addition, by providing a diaphragm inside to isolate the filler to minimize the friction between the piston rod and the bearing, and also has the advantage that can give a large output with a small power by giving flexibility to the piston rod.

본 발명의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프 는, 일측에 흡입구/토출구가 장착된 펌프몸체;와, 상기 펌프몸체로 압력을 발생시킬 수 있도록 상기 펌프몸체에 축설되는 피스톤;과, 상기 피스톤을 왕복운동시킬 수 있도록 상기 피스톤로드에 결합되는 리니어모터;과, 상기 피스톤로드를 반경방향으로 강하게 지지하여 상기 펌프몸체 내에서 왕복운동하는 피스톤을 일정한 반경방향 위치에 고정시킬 수 있도록 리니어모터의 양측에 배치되는 베어링; 및 내부에 충진되는 윤활제를 가두어두고 왕복운동하는 피스톤로드에 유연성을 부여하기 위해 베어링과 피스톤의 사이에 배치되는 다이어프램;을 포함하여 구성되는 것을 특징으로 하는 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프에 의해서 달성된다.Non-contact volumetric fuel pump for LPG vehicle having a lubricant isolation structure of the present invention, the pump body is equipped with an inlet / discharge port on one side; and a piston which is built up in the pump body to generate pressure to the pump body; and A linear motor coupled to the piston rod to reciprocate the piston; and a linear motor to strongly support the piston rod in a radial direction to fix the piston reciprocating in the pump body at a constant radial position. Bearings disposed on both sides of the motor; And a diaphragm disposed between the bearing and the piston in order to impart flexibility to the piston rod reciprocating and confining the lubricant filled therein. Non-contact volume type for an LPG vehicle having a lubricant isolation structure comprising: Achieved by a fuel pump.

또한 중앙부위에 흡입구/토출구가 장착된 펌프몸체;와, 상기 펌프몸체로 압력을 발생시킬 수 있도록 상기 펌프몸체의 양측에 축설되는 피스톤;과, 상기 각 피스톤을 왕복운동시킬 수 있도록 각각의 피스톤로드에 결합되는 리니어모터;와, 상기 각 피스톤로드를 반경방향으로 강하게 지지하여 상기 펌프몸체의 양측으로 왕복운동하는 피스톤을 일정한 반경방향 위치에 고정시킬 수 있도록 각각의 리니어모터의 양측에 배치되는 베어링; 및 내부에 충진되는 윤활제를 가두어두고 양측으로 왕복운동하는 각각의 피스톤로드에 유연성을 부여하기 위해 베어링과 피스톤의 사이에 배치되는 다이어프램;을 포함하여 구성되는 것을 특징으로 하는 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프에 의해서 달성된다.In addition, the pump body is equipped with a suction port / discharge port in the central portion; and the piston which is built up on both sides of the pump body to generate pressure to the pump body; and each piston rod to reciprocate each piston A linear motor coupled to the bearing, and bearings disposed at both sides of each linear motor so as to strongly support each of the piston rods in a radial direction to fix the piston reciprocating to both sides of the pump body at a constant radial position; And a diaphragm disposed between the bearing and the piston to impart flexibility to each piston rod reciprocating to both sides and confining the lubricant filled therein. LPG vehicle having a lubricant isolation structure comprising: It is achieved by a non-contact volumetric fuel pump.

상기에서 피스톤은 펌프몸체와 실간극이 형성되는 비접촉식이되, 외주면으로 펌프몸체의 내부로 유입되는 LPG연료가 후단으로 누출되는 것을 방지하기 위해 다 수의 실링홈이 형성된 것이 바람직하다.The piston is a non-contact type in which the pump body and the seal gap is formed, it is preferable that a plurality of sealing grooves are formed in order to prevent the LPG fuel flowing into the pump body to the rear end to leak to the rear end.

상기에서 피스톤로드는 리니어모터의 이동자에 축설되는 것이 바람직하다.In the above, the piston rod is preferably arranged in the mover of the linear motor.

상기에서 베어링은 높은 반지름방향 강성도와 피스톤로드가 내부에서 원활히 왕복운동 할 수 있도록 낮은 축방향 강성도를 가지는 선형베어링인 것이 바람직하다.The bearing is preferably a linear bearing having a high radial rigidity and a low axial rigidity so that the piston rod can smoothly reciprocate therein.

본 발명은 첨부된 도면을 참조하여 후술하는 바람직한 실시예를 통하여 더욱 명백해질 것이다. 이하에서는 본 발명의 실시예를 통해 당업자가 용이하게 이해하고 재현할 수 있도록 상세히 설명하도록 한다. The invention will become more apparent through the preferred embodiments described below with reference to the accompanying drawings. Hereinafter will be described in detail to enable those skilled in the art to easily understand and reproduce through embodiments of the present invention.

도 1a는 본 발명에 따른 실시예의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프의 단면구성도이고, 도 1b는 본 발명에 따른 실시예의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프의 작동상태도이다.Figure 1a is a cross-sectional view of a non-contact volumetric fuel pump for LPG vehicle having a lubricant isolation structure of the embodiment according to the present invention, Figure 1b is a non-contact volumetric fuel pump for LPG vehicle having a lubricant isolation structure of the embodiment according to the present invention. The operation state of.

도 1a 및 도 1b에 도시된 바와 같이, 본 발명은 LPG차량의 용적형 연료펌프에서 낮은 LPG 점도에 의해 피스톤과 펌프몸체 사이에서 나타나는 기계마모 및 압력저하로 인한 펌프성능저하, 그리고 LPG차량의 터보형펌프의 문제점인 캐비테이션에 의한 진동과 소음, 침식에 의한 기기 내부손상과 같은 문제점을 방지할 수 있으며, 아울러 피스톤로드와 베어링간의 마찰을 최소화하기 위해 내부에 윤활제를 충진시키되, 충진된 윤활제를 LPG연료 펌핑 공간부와 격리시켜 윤활제가 소진되는 것과 윤활제가 LPG와 섞이는 것을 방지할 수 있는 구조의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프(100)에 관한 것이다.As shown in Figures 1a and 1b, the present invention is a turbo-type LPG vehicle of the pump performance degradation due to mechanical wear and pressure drop between the piston and the pump body due to the low LPG viscosity in the LPG vehicle volumetric fuel pump It is possible to prevent problems such as vibration, noise caused by cavitation, and internal damage caused by erosion of the pump, and to fill the lubricant inside to minimize the friction between the piston rod and the bearing. It relates to a non-contact volume fuel pump 100 for LPG vehicles having a lubricant isolating structure of the structure that can be isolated from the pumping space portion to prevent the lubricant is exhausted and the lubricant is mixed with the LPG.

이러한 연료펌프(1000)는 크게 5부분으로 구성되는데, 이는 펌프몸체(200)와, 상기 펌프몸체(200)의 내부에 축설되는 피스톤(300)과, 상기 피스톤(300)을 왕복운동시키는 리니어모터(400)와, 상기 피스톤로드(320)을 지지하는 베어링과, 윤활제를 격리시키고 피스톤로드(320)에 유연성을 부여하기 위해 베어링과 피스톤(300)의 사이에 배치되는 다이어프램(500)으로 구성된다.The fuel pump 1000 is largely composed of five parts, which is a pump body 200, a piston 300 built in the pump body 200, and a linear motor reciprocating the piston 300. 400, a bearing for supporting the piston rod 320, and a diaphragm 500 disposed between the bearing and the piston 300 to isolate lubricant and provide flexibility to the piston rod 320. .

여기서 상기 연료펌프(1000)는 압력을 발생시키기 위해 단일 피스톤(300)이 펌프몸체(200)의 내부에 축설된 구조이다. 이 때 상기 피스톤(300)은 펌프몸체(200)와 비접촉방식을 취하되, 압력이 손실되는 것을 최소화하기 위한 실간극(G)이 형성되게 피스톤(300)의 외경을 확정하는 것이 선행되어야 한다Here, the fuel pump 1000 has a structure in which a single piston 300 is built in the pump body 200 to generate pressure. At this time, the piston 300 takes a non-contact method with the pump body 200, but it is necessary to first determine the outer diameter of the piston 300 so that a seal gap G is formed to minimize the loss of pressure.

그리고 상기 펌프몸체(200)의 일측에는 상기 피스톤(300)의 왕복운동에 따른 압축과 흡입에 따라 LPG 연료를 흡입하고 토출할 수 있는 흡입구(210)/토출구(220)가 형성된 구조이다. 이때 상기 흡입구(210) 및 토출구(220)에는 체크밸브(211,221)가 각각 연결되어 있어 피스톤(300)의 흡입행정과 토출행정에 따라 단속된다.In addition, one side of the pump body 200 has a structure in which a suction port 210 / discharge port 220 for sucking and discharging LPG fuel according to compression and suction according to the reciprocating motion of the piston 300 is formed. At this time, check valves 211 and 221 are connected to the suction port 210 and the discharge port 220, respectively, and are intermittent according to the suction stroke and the discharge stroke of the piston 300.

아울러 상기 피스톤(300)은 펌프몸체(200)에서 왕복운동될 수 있도록 리니어모터(400)가 장착되는 구조이다.In addition, the piston 300 has a structure in which the linear motor 400 is mounted to be reciprocated in the pump body 200.

이러한 장착구조를 상세히 설명하면, 도 1b와 같이, 상기 리니어모터(400)의 고정자(420)는 펌프몸체(200)에 고정된 구조이며, 이동자(410)는 피스톤(300)에서 연장된 피스톤로드(320)에 결합되는 구조이다. 이 때 이동자(410)는 피스톤로드(320)를 내삽시켜 이동자(410)가 고정자(420)와의 자기장에 의해 왕복운동하면 상기 피스톤로드(320) 역시 동반 이동하는 구조이다.Referring to this mounting structure in detail, as shown in Figure 1b, the stator 420 of the linear motor 400 is a structure fixed to the pump body 200, the mover 410 is a piston rod extending from the piston 300 It is a structure coupled to (320). At this time, the mover 410 interpolates the piston rod 320 so that the piston rod 320 also moves together when the mover 410 reciprocates by a magnetic field with the stator 420.

한편 상기 베어링은 상기 피스톤로드(320)를 반경방향으로 강하게 지지하여 상기 펌프몸체(200) 내에서 왕복운동하는 피스톤(300)을 일정한 반경방향 위치에 고정시킬 수 있도록 리니어모터(400)의 양측에 배치되는 구조이다.On the other hand, the bearing strongly supports the piston rod 320 in the radial direction so as to fix the piston 300 reciprocating in the pump body 200 at a constant radial position on both sides of the linear motor 400. It is a structure to be arranged.

이러한 상기 베어링은 높은 반지름방향 강성도와 피스톤로드가 내부에서 원활히 왕복운동 할 수 있도록 낮은 축방향 강성도를 가지는 선형베어링(100)인 것이 바람직하다.Such a bearing is preferably a linear bearing 100 having a high radial rigidity and a low axial rigidity so that the piston rod can smoothly reciprocate therein.

따라서 상기 피스톤(300)이 왕복운동된다 하더라도 상기 선형베어링(100)을 통해 펌프몸체(200)의 사이에 형성된 실간극(G)이 안정적으로 유지될 수 있는 구조가 마련된다.Therefore, even when the piston 300 is reciprocated, the structure in which the clearance gap G formed between the pump bodies 200 through the linear bearing 100 is stably maintained is provided.

한편 상기 피스톤(300)은 펌프몸체(200)와 실간극(G)이 형성되는 비접촉식이되, 외주면으로 펌프몸체(200)의 내부로 유입되는 LPG연료가 후단으로 누출되는 것을 방지하기 위해 다수의 실링홈(330)이 형성된 구조이다.Meanwhile, the piston 300 is a non-contact type in which the pump body 200 and the thread gap G are formed, and a plurality of LPG fuel introduced into the pump body 200 to the outer circumference thereof is prevented from leaking to the rear end. The sealing groove 330 is formed.

이러한 구조는 비접촉 실링의 하나인 "래버린스(Labyrinth)" 타입인 것으로, 실간극(G)을 따라 LPG 연료가 유입되어 다수의 실링홈(310)을 거치면서 압력손실에 의해 압력이 점차 강하되어 펌프 배제용적의 내부와 외부의 압력차를 유지시켜 주고, 이 압력차를 흡입행정에서 외부로부터의 유입과 토출행정에서 외부로의 연료누출을 억제시켜 준다.(도 1b에 2점쇄선으로 도시)This structure is one of the non-contact sealing "Labyrinth" type, LPG fuel is introduced along the gap (G) through a plurality of sealing grooves 310, the pressure is gradually reduced by the pressure loss It maintains the pressure difference between the pump exclusion volume inside and outside, and suppresses the pressure difference from the intake stroke to the outside and fuel leakage from the discharge stroke to the outside (shown by a dashed-dotted line in Fig. 1B).

아울러 상기 다이어프램(500)은 플렉시블(Flexible)하게 주름진 형태로 내부에 충진되는 윤활제(600)를 가두어두고 왕복운동하는 피스톤로드(320)에 유연성을 부여하기 위해 베어링과 피스톤(300)와의 사이에 배치되는 구조이다.In addition, the diaphragm 500 is disposed between the bearing and the piston 300 to impart flexibility to the reciprocating piston rod 320 by confining the lubricant 600 filled therein in a flexible and corrugated form. It is a structure.

이러한 상기 다이어프램(500)을 통해 피스톤로드(320)와 베어링간의 마찰을 취소화하기 위한 윤활제(600)를 충진시킬 수 있으며, 충진된 윤활제(600)는 LPG연료 펌핑 공간부와 격리됨으로 윤활제(600)가 소진되는 것과 윤활제가 LPG와 섞이는 것을 방지할 수 있다.Through the diaphragm 500, the lubricant 600 may be filled to cancel the friction between the piston rod 320 and the bearing, and the filled lubricant 600 is isolated from the LPG fuel pumping space and the lubricant 600. ) And prevents the lubricant from mixing with LPG.

도 2a는 본 발명에 따른 다른 실시예의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프의 단면구성도이고, 도 2b는 본 발명에 따른 다른 실시예의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프의 작동상태도이다.Figure 2a is a cross-sectional view of a non-contact type fuel pump for LPG vehicle having a lubricant isolating structure of another embodiment according to the present invention, Figure 2b is a non-contact volume type for LPG vehicle having a lubricant isolating structure of another embodiment according to the present invention. This is a state diagram of the fuel pump.

먼저 도 2a 및 도 2b에 도시된 바와 같이, 다른 실시예의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프(1000)의 구조는 실시예와는 달리 펌프몸체(200)의 내부 양측으로 두개의 피스톤(300)을 구비한 구조이다.First, as shown in FIGS. 2A and 2B, the structure of the non-contact volumetric fuel pump 1000 for an LPG vehicle having the lubricant isolation structure of another embodiment is different from the embodiment to two inner sides of the pump body 200. It is a structure provided with the piston 300.

따라서 상기 펌프몸체(200)의 흡입구(210) 및 토출구(220)는 펌프몸체(200)의 중앙영역에 형성되는 구조이다. 이 때 흡입구(210) 및 토출구(220)를 통한 LPG연료의 원활한 펌핑을 위해 피스톤(300)의 압축시 중앙영역에는 일정공간부가 형성되어야 한다. Therefore, the suction port 210 and the discharge port 220 of the pump body 200 is a structure formed in the central region of the pump body 200. At this time, in order to smoothly pump the LPG fuel through the inlet port 210 and the outlet port 220, a certain space portion should be formed in the central region when the piston 300 is compressed.

때문에 다른 실시예의 연료펌프(1000)는 도 2b와 같이, 두개의 피스톤(300)에 의해 펌핑 기능을 배가시킬 뿐만 아니라 좌우 대칭에 의해 진동을 억제시킬 수 있는 구조이다.Therefore, as shown in FIG. 2B, the fuel pump 1000 according to another embodiment may not only double the pumping function by the two pistons 300 but also suppress the vibration by symmetry.

이 때 상기 각각의 피스톤(300)에는 구동력을 제공하기 위한 리니어모터(400) 및 피스톤로드(320)를 지지하기 위한 한쌍의 선형베어링(100)이 구비된 구조이다. At this time, each of the piston 300 has a structure provided with a linear motor 100 for supporting the linear motor 400 and the piston rod 320 for providing a driving force.

또한 각각의 선형베어링(100)과 피스톤(300)와의 사이에는 다이어프램(500)이 배치되어 있어 펌프몸체(200)의 양측으로 왕복운동하는 피스톤로드(320)에 각각 유연성을 부여함과 동시에 피스톤로드(320)와 베어링간의 마찰을 최소화 할 수 있도록 윤활제(600)를 충진시킬 수 있다.In addition, a diaphragm 500 is disposed between each of the linear bearings 100 and the piston 300 to provide flexibility to the piston rod 320 reciprocating to both sides of the pump body 200, and at the same time, the piston rod. The lubricant 600 may be filled to minimize friction between the 320 and the bearing.

이 때 충진된 윤활제(600)는 다이어램프(500)를 통해 LPG연료 펌핑 공간부와 격리됨으로 윤활제(600)가 소진되는 것과 윤활제가 LPG와 섞이는 것을 방지할 수 있는 특징이 있다.In this case, the filled lubricant 600 is isolated from the LPG fuel pumping space part through the diaphragm 500, and the lubricant 600 is exhausted and the lubricant is prevented from mixing with the LPG.

이상에서와 같이 본 발명에 따른 LPG자동차용 비접촉식 용적형 연료펌프는 LPG 차량의 연료펌프에만 한정하는 것이 아니라, DME(Dimethy Ether)가솔린 및 경유차량에도 적용될 수 있음은 물론이다.As described above, the non-contact volume fuel pump for LPG vehicles according to the present invention is not only limited to the fuel pump of the LPG vehicle, but can also be applied to DME (Dimethy Ether) gasoline and diesel vehicles.

비록 본 발명이 상기에서 언급한 바람직한 실시예와 관련하여 설명되어졌지만, 본 발명의 요지와 범위로부터 벗어남이 없이 다른 다양한 수정 및 변형이 가능할 것이다. 따라서, 첨부된 청구의 범위는 본 발명의 진정한 범위내에 속하는 그러한 수정 및 변형을 포함할 것이라고 여겨진다. Although the present invention has been described in connection with the above-mentioned preferred embodiments, various other modifications and variations may be made without departing from the spirit and scope of the invention. Accordingly, it is intended that the appended claims cover such modifications and variations as fall within the true scope of the invention.

도 1a는 본 발명에 따른 실시예의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프의 단면구성도,Figure 1a is a cross-sectional view of a non-contact volume fuel pump for LPG vehicle having a lubricant isolation structure of the embodiment according to the present invention,

도 1b는 본 발명에 따른 실시예의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프의 작동상태도,Figure 1b is an operating state of the non-contact volumetric fuel pump for LPG vehicle having a lubricant isolation structure of the embodiment according to the present invention,

도 2a는 본 발명에 따른 다른 실시예의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프의 단면구성도,Figure 2a is a cross-sectional view of a non-contact volume fuel pump for LPG vehicle having a lubricant isolation structure of another embodiment according to the present invention,

도 2b는 본 발명에 따른 다른 실시예의 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프의 작동상태도이다.Figure 2b is an operating state diagram of a non-contact volume fuel pump for LPG vehicle having a lubricant isolation structure of another embodiment according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

100: 선형베어링 200: 펌프몸체100: linear bearing 200: pump body

210: 흡입구 211: 체크밸브210: inlet 211: check valve

220: 토출구 221: 체크밸브220: discharge port 221: check valve

300: 피스톤 320: 피스톤로드300: piston 320: piston rod

330: 실링홈 400: 리니어모터330: sealing groove 400: linear motor

410: 이동자 420: 고정자410: mover 420: stator

500: 다이어프램 600: 윤활제500: diaphragm 600: lubricant

1000: 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프1000: Non-contact volumetric fuel pump for LPG vehicles with lubricant isolation

G: 실간극G: Clearance

Claims (5)

LPG자동차용 연료펌프에 있어서,In the LPG automobile fuel pump, 일측에 흡입구(210)/토출구(220)가 장착된 펌프몸체(200);A pump body 200 equipped with a suction port 210 / discharge port 220 at one side; 상기 펌프몸체(200)로 압력을 발생시킬 수 있도록 상기 펌프몸체(200)에 축설되는 피스톤(300);A piston 300 built in the pump body 200 to generate pressure to the pump body 200; 상기 피스톤(300)을 왕복운동시킬 수 있도록 상기 피스톤로드(320)에 결합되는 리니어모터(400);A linear motor 400 coupled to the piston rod 320 to reciprocate the piston 300; 상기 피스톤로드(320)를 반경방향으로 강하게 지지하여 상기 펌프몸체(200)로 왕복운동하는 피스톤(300)을 일정한 반경방향 위치에 고정시킬 수 있도록 리니어모터(400)의 양측에 배치되는 베어링; 및Bearings disposed on both sides of the linear motor 400 to strongly support the piston rod 320 in the radial direction to fix the piston 300 reciprocating to the pump body 200 at a predetermined radial position; And 내부에 충진되는 윤활제(600)를 실링하고 왕복운동하는 피스톤로드(320)에 축방향 유연성을 부여하기 위해 베어링과 피스톤(300)의 사이에 배치되는 다이어프램(500);을 포함하여 구성되되,And a diaphragm 500 disposed between the bearing and the piston 300 to provide axial flexibility to the piston rod 320 sealing and reciprocating the lubricant 600 filled therein. 상기 피스톤로드(320)는 리니어모터(400)의 이동자(410)에 축설되는 것을 특징으로 하는 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프.The piston rod 320 is a non-contact volume fuel pump for LPG vehicles having a lubricant isolating structure, characterized in that arranged in the mover (410) of the linear motor (400). LPG자동차용 연료펌프에 있어서,In the LPG automobile fuel pump, 중앙부위에 흡입구(210)/토출구(220)가 장착된 펌프몸체(200);A pump body 200 equipped with a suction port 210 / discharge port 220 at a central portion thereof; 상기 펌프몸체(200)로 압력을 발생시킬 수 있도록 상기 펌프몸체(200)의 양측에 축설되는 피스톤(300);A piston 300 which is arranged on both sides of the pump body 200 to generate pressure to the pump body 200; 상기 각 피스톤(300)을 왕복운동시킬 수 있도록 각각의 피스톤로드(320)에 결합되는 리니어모터(400); 및A linear motor 400 coupled to each piston rod 320 to reciprocate the respective pistons 300; And 상기 각 피스톤로드(320)를 반경방향으로 강하게 지지하여 상기 펌프몸체(200)의 양측으로 왕복운동하는 피스톤(300)을 일정한 반경방향 위치에 고정시킬 수 있도록 각각의 리니어모터(400)의 양측에 배치되는 베어링; 및Strongly supporting each of the piston rod 320 in the radial direction on both sides of each linear motor 400 to fix the piston 300 reciprocating to both sides of the pump body 200 in a constant radial position. A bearing disposed; And 내부에 충진되는 윤활제(600)를 실링하고 양측으로 왕복운동하는 각각의 피스톤로드(320)에 축방향 유연성을 부여하기 위해 베어링과 피스톤(300)의 사이에 배치되는 다이어프램(500);을 포함하여 구성되되,Including a diaphragm 500 disposed between the bearing and the piston 300 to seal the lubricant 600 filled therein and to provide axial flexibility to each piston rod 320 reciprocating to both sides. Composed, 상기 피스톤로드(320)는 리니어모터(400)의 이동자(410)에 축설되는 것을 특징으로 하는 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프.The piston rod 320 is a non-contact volume fuel pump for LPG vehicles having a lubricant isolating structure, characterized in that arranged in the mover (410) of the linear motor (400). 제 1항 또는 제 2항에 있어서,The method according to claim 1 or 2, 상기 피스톤(300)은 펌프몸체(200)와 실간극(G)이 형성되는 비접촉식이되, 외주면으로 펌프몸체(200)의 내부로 누출되는 LPG연료가 후단으로 누출되는 것을 방지하기 위해 다수의 실링홈(330)이 형성된 것을 특징으로 하는 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프.The piston 300 is a non-contact type in which the pump body 200 and the seal gap (G) is formed, a plurality of sealing to prevent the LPG fuel leaking into the pump body 200 to the rear end to the outer circumferential surface Non-contact volumetric fuel pump for LPG vehicle having a lubricant isolation structure, characterized in that the groove 330 is formed. 삭제delete 제 1항 또는 제 2항에 있어서,The method according to claim 1 or 2, 상기 베어링은 높은 반지름방향 강성도와 피스톤로드(320)가 내부에서 원활히 왕복운동 할 수 있도록 낮은 축방향 강성도를 가지는 선형베어링(100)인 것을 특징으로 하는 윤활제 격리 구조를 갖는 LPG자동차용 비접촉식 용적형 연료펌프.The bearing is a non-contact volume fuel for LPG vehicles having a lubricant isolation structure, characterized in that the linear bearing 100 having a high radial stiffness and low axial rigidity so that the piston rod 320 can smoothly reciprocate therein. Pump.
KR1020070084193A 2007-08-21 2007-08-21 Contactless displacement type fuel pump for l p g vehicle with lubricant isolation structure KR100860104B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020070084193A KR100860104B1 (en) 2007-08-21 2007-08-21 Contactless displacement type fuel pump for l p g vehicle with lubricant isolation structure
JP2010521784A JP5054819B2 (en) 2007-08-21 2008-08-21 Non-contact positive displacement fuel pump for LPG automobile with lubricant isolation structure
PCT/KR2008/004873 WO2009025505A1 (en) 2007-08-21 2008-08-21 Non-contact positive displacement fuel pump for lpg vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070084193A KR100860104B1 (en) 2007-08-21 2007-08-21 Contactless displacement type fuel pump for l p g vehicle with lubricant isolation structure

Publications (1)

Publication Number Publication Date
KR100860104B1 true KR100860104B1 (en) 2008-09-25

Family

ID=40023619

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070084193A KR100860104B1 (en) 2007-08-21 2007-08-21 Contactless displacement type fuel pump for l p g vehicle with lubricant isolation structure

Country Status (3)

Country Link
JP (1) JP5054819B2 (en)
KR (1) KR100860104B1 (en)
WO (1) WO2009025505A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200461908Y1 (en) * 2010-02-19 2012-08-13 주식회사 프로텍 Non-contact type linear pump
CN114962844A (en) * 2022-04-26 2022-08-30 重庆海浦洛自动化科技有限公司 Energy storage device for high-viscosity medium and use method thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2010861C2 (en) * 2013-05-24 2014-12-01 Vialle Alternative Fuel Systems Bv Liquefied petrol gas pump for displacing liquid lpg, housing for a pump chamber and fuel system comprising a lpg pump.
US10240562B2 (en) 2016-10-24 2019-03-26 Progress Rail Locomotive Inc. Machine system having submersible pumping system, and method
US10240722B2 (en) 2016-10-24 2019-03-26 Progress Rail Locomotive Inc. Cryogenic fluid system and method of operating same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900003831Y1 (en) * 1987-10-26 1990-05-01 강기묵 Sealing apparatus
KR100219789B1 (en) * 1996-05-27 1999-09-01 와다 아끼히로 Control apparatus for automatic transmission
KR100407501B1 (en) 2001-03-29 2003-12-01 (주)모토닉 lubricating device of fuel pump in the LPG vehicles
JP2006283736A (en) 2005-04-05 2006-10-19 Tokyo Gas Co Ltd Self-driving type pump for liquefied gas
KR100682787B1 (en) 2004-06-01 2007-02-15 가부시키가이샤 도요다 지도숏키 Pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6412083A (en) * 1987-07-03 1989-01-17 Kurashiki Boseki Kk Reciprocating pump
JPH0460178A (en) * 1990-06-29 1992-02-26 Nagano Keiki Seisakusho Ltd Electromagnetic reciprocating pump
JPH09151824A (en) * 1995-11-29 1997-06-10 Unisia Jecs Corp Vaporised fuel processing device for internal combustion engine for vehicle
JPH09291880A (en) * 1996-04-26 1997-11-11 Aisin Seiki Co Ltd Linear motor compressor
US6203288B1 (en) * 1999-01-05 2001-03-20 Air Products And Chemicals, Inc. Reciprocating pumps with linear motor driver
KR100441133B1 (en) * 2002-01-08 2004-07-21 동양매직 주식회사 pressure controll style proportion gas valve
JP2006152976A (en) * 2004-12-01 2006-06-15 Nikki Co Ltd High pressure fuel pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900003831Y1 (en) * 1987-10-26 1990-05-01 강기묵 Sealing apparatus
KR100219789B1 (en) * 1996-05-27 1999-09-01 와다 아끼히로 Control apparatus for automatic transmission
KR100407501B1 (en) 2001-03-29 2003-12-01 (주)모토닉 lubricating device of fuel pump in the LPG vehicles
KR100682787B1 (en) 2004-06-01 2007-02-15 가부시키가이샤 도요다 지도숏키 Pump
JP2006283736A (en) 2005-04-05 2006-10-19 Tokyo Gas Co Ltd Self-driving type pump for liquefied gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200461908Y1 (en) * 2010-02-19 2012-08-13 주식회사 프로텍 Non-contact type linear pump
CN114962844A (en) * 2022-04-26 2022-08-30 重庆海浦洛自动化科技有限公司 Energy storage device for high-viscosity medium and use method thereof

Also Published As

Publication number Publication date
JP5054819B2 (en) 2012-10-24
WO2009025505A1 (en) 2009-02-26
JP2011512471A (en) 2011-04-21

Similar Documents

Publication Publication Date Title
KR100850845B1 (en) Rotating fluid machine
KR100860104B1 (en) Contactless displacement type fuel pump for l p g vehicle with lubricant isolation structure
CN103362783B (en) A kind of Linearkompressor
CN109958621A (en) A kind of duplex cylinder compressor
CN109958619A (en) A kind of single cylinder compressor
US20050265862A1 (en) Pump
US10781805B2 (en) Small air compressor
CN102192128B (en) Compressor and refrigerator with the same
CN100458154C (en) Reciprocating compressor
US11067070B2 (en) Cylinder assemble structure for compact air compressor
CN103711676B (en) Oil supply method for linear compressor and oil supply mechanism
RU2518796C1 (en) Machine of positive displacement action
KR100899606B1 (en) Contactless Displacement Type Fuel Pump For L P G Vehicle
CN211116581U (en) Compressor for vehicle
KR101646044B1 (en) Hermetic compressor and refrigerator using the same
US20220154707A1 (en) Electric vacuum pump for braking system on passenger cars with v-twin piston arrangement
CN104153962B (en) Fueller and include the linear compressor of this fueller
JP2005140035A (en) Hydraulic machine
CN110761976B (en) Compressor
KR102579202B1 (en) Reciprocating compressor
CN104153972B (en) Fueller and include the linear compressor of this fueller
CN220378480U (en) Double-cylinder pump body structure and compressor
CN215409165U (en) High-pressure plunger pump with oil groove
JP2001132637A (en) Compressor and refrigerator
CN109139416A (en) A kind of compression assembly and compressor

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130621

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20140605

Year of fee payment: 7

FPAY Annual fee payment

Payment date: 20150609

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20160613

Year of fee payment: 9

FPAY Annual fee payment

Payment date: 20170621

Year of fee payment: 10