baber/WOPTO huggingface dataset:
Patent KR-19990007191-A (KR)
Title: 희생용 유동성 산화물을 이용하는 이중 다마신 법을 사용한 다층 동일 평면 금속/절연체 막 형성 방법
IPC: H01L21/302
Filed: 1998-06-22
Abstract: 본 발명은 기판 위의 적층 구조에 이중 다마신(damascene) 에칭을 수행하는 개선된 방법에 관한 것이다.  적층 구조는 아래에 놓인 디바이스층과 위에 놓인 절연 층을 포함한다.  상기 방법은 트렌치(trench)가 아래에 놓인 디바이스층위에 위치되어 트렌치의 바닥에 있는 절연 층에 의해 분리되도록 절연 층의 상부 표면에 트렌치를 형성하는 것을 포함한다.  상기 방법은 또한 유동성 산화물을 절연 층의 상부 표면과 트렌치 내에 증착한 후 유동성 산화물을 절연 층의 상부 표면의 높이까지 평탄화하는 것을 포함한다.  나아가, 상기 방법은 트렌치 내의 유동성 산화물과 트렌치 바닥의 절연 층을 통과하여 아래에 놓인 디바이스층까지 에칭 하여 통로를 형성하는 것도 포함한다.
Patent KR-19990007265-A (KR)
Title: 아미노알콕시실록산의 제조방법
IPC: D06M15/643
Filed: 1998-06-24
Abstract: 아미노알콕시실록산의 제조방법은 하나 이상의 Si-X 결합(여기서, X는 수소원자, -OH 그룹 또는 -OC(O)NR 1   2 그룹이다)을 갖는 실록산을 화학식 HO-R-NR 1   2 의 아미노알콜(여기서, R은 치환되거나 치환되지 않은 2가 알킬렌 또는 아릴렌 그룹이고, R 1 은 수소원자 또는 탄소수 1 내지 18의 알킬 그룹이다)과 반응시키고, 반응 혼합물에서 HX를 제거함을 포함한다.  실록산 및 아미노알콜은 바람직하게는 각각 HO(Me 2 SiO) 4.5 H와 에탄올아민이거나, (Me 3 SiO) 2 MeSiH와 에탄올아민, 이소프로판올아민 또는 3-아미노프로판-1-올이거나, Me 3 SiO(Me 2 SiO) 3 (MeHSiO) 5 SiMe 3 과 이소프로판올아민이다.  이렇게 제조된 아미노알콕시실록산은 직물 처리용으로 유용하다.
Patent KR-20000003606-A (KR)
Title: Data input buffer
Inventor: CHO GYU SUK
IPC: H03K19/0185
Filed: 1998-06-29
Abstract: PURPOSE: A data input buffer is provided to possibly convert data into the CMOS signals of the inner signal standard without the flow of the static current and the generation of the inner bias potential. CONSTITUTION: The data input buffer comprises: a first buffering circuit unit enabled by receiving the control of a first signal standard distinction signal generated by distinguishing a first and a second signal standards; and a second buffering circuit unit enabled by receiving a second signal standard distinction signal.
Patent KR-19980071944-A (KR)
Title: 식물재배용 화분
IPC: A01G9/02
Filed: 1998-07-06
Abstract: 식물이 식재된 화분내의 상태에 따라 자동적으로 풍향과 가습 및 급수가 이루어질 수 있도록 하기 위한 식물재배용 화분이 개시되어 있다. 본 발명은,플라스틱 또는 흙을 주원료하여 소정형태의 몸체를 형성하고, 몸체의 중앙에 식물이 식재되는 식재공간이 형성된 화분에 있어서, 식재공간의 저면부에 형성되며,식재공간의 둘레를 따라 화분의 상부까지 상방으로 연장된 적어도 하나 이상의 세공이 통공된 통기공; 화분의 외주면과 식재공간의 사이의 공간부의 소정위치에 장착되어 주입구가 형성된 물탱크 및 물탱크의 물을 통기공으로 분출하기 위한 펌프로 구성된 물공급장치; 공간부의 소정위치에 장착되어 흡입구를 통하여 외기를 흡입하여 통기공으로 분사하는 위한 터빈을 구비한 모터; 공간부의 소정위치에 장착되고 식재공간내에 장착된 온도감지센서 및 습도감지센서의 출력신호를 받아 물공급장치 및 터빈을 구비한 모터의 동작을 제어하여 식재공간내의 온도 및 습도를 제어하기 위한 제어장치; 그리고, 물공급장치, 터빈을 구비한 모터 및 제어장치에 전원을 공급시켜주기 위한 전원공급장치를 포함하는 것이다. 화분의 내부 온도 및 습도에 따라 자동으로 물과 바람을 화분의 내부로 공급하여 편리하게 관상용 식물의 생육을 촉진하고 실내의 공기정화 및 가습을 도모할 수 있다.
Patent KR-20000009096-A (KR)
Title: Method and apparatus of focus jump in photo-disk system having double-layer structure
Inventor: HWANG YONG HA
IPC: G11B7/09
Filed: 1998-07-21
Abstract: PURPOSE: A method and apparatus of focus jump in photo-disk system having double-layer structure is provided to perform focus jumping with safety by controlling jump speed referring a focus error signal and a level of radio frequency(RF) in acceleration range. CONSTITUTION: In the method of moving focus of a laser beam among record layers, the focus jumping method is comprising steps of accelerating an objective lens to a target record layer by applying pulse to desired direction of actuator, decelerating the objective lens for stopping at focus point of the target record layer from an insert point after deciding if the objective lens is in focus inserting region of the target record layer referring a focus error signal generated from a photo-pickup, speed controlling for the objective lens to be stopped by referring the RF signal generated from the photo-pickup at a point which a level of the RF signal returns to a normal level.
Patent KR-20000013079-A (KR)
Title: Data rate variable circuit for universal synchronous/asynchronous receiver/transmitter
Inventor: HA CHANG WOO
IPC: H04L12/20
Filed: 1998-08-04
Abstract: PURPOSE: A data rate variable circuit for universal synchronous/asynchronous receiver/transmitter which can monitor serial data communication and personal computers even in systems with variable data rates and variable system clocks. CONSTITUTION: The data rate variable circuit includes a control register controlling an output of a clock generator according to a data rate; a programmable clock generator producing a variable output waveform according to the control of the control register; and a universal synchronous/asynchronous receiver/transmitter receiving various output waveforms from the programmable clock generator and transmitting/receiving synchronous format data and asynchronous format data.
Patent KR-20000014342-A (KR)
Title: Thermal energy store tub of hot water system using solar heat of modular method for controlling stored heat capacity and promoting stratification of temperature
Inventor: CHUN WON GEE
IPC: F24J2/34
Filed: 1998-08-20
Abstract: PURPOSE: A hot water system using solar heat is provided to maximize the using efficiency of solar heat by making the stratification of temperature between thermal energy storage tubs by moving hot water from a thermal energy storage tub to the other thermal energy storage tub where the hot water is drained when using hot water. CONSTITUTION: The hot water system using solar heat is composed of:a right copper pipe(13) installed to be projected inside of a thermal energy storage tub(14) and to be contacted with hot water, connected with a corrugated pipe(1) and attached a float(3) on the end part; a hot water exhaust pipe(1) which always sinks under water, connected with the right copper pipe; the right copper pipe installed on the right lower area of the thermal energy storage tub; and an auxiliary thermal energy storage tub(16) connected to a hot water feeding pipe(8) with a screw thread(19).
Patent KR-20000019003-A (KR)
Title: Print circuit substrate used in semiconductor package for preventing static electricity
Inventor: KIM SEONG JIN
IPC: H05K1/11
Filed: 1998-09-08
Abstract: PURPOSE: A print circuit substrate used in a semiconductor package for preventing static electricity is provided to prevent a static electricity from a semiconductor chip and a circuit pattern during a molding procedure by transferring a ground signal to a mold. CONSTITUTION: The print circuit substrate used in a semiconductor package for preventing static electricity comprises: a thermosetting resin substrate(11); a chip installation portion(16) having a rectangle shape; a multitude of circuit patterns(12) formed on an upper side of the substrate; a solder ball land(14); a gold gate(17) formed by plating; a via hole for a ground(20); a multitude of tooling holes(18); a circuit pattern(21, 24) for ground; and a copper plating area(22) formed on an inside wall of the tooling hole.
Patent KR-19990030098-A (KR)
Title: 사전 동작 시험 장치
IPC: H01L23/12
Filed: 1998-09-24
Abstract: 본 발명은 캐리어-가요성 회로 부재 조립체를 포함하는 사전 동작 시험 소켓에 관한 것이다.  가요성 회로 부재는 이의 대향 측면들 상에 형성된 제1 및 제2 도전성 범프와 상기 제1범프와 제2범프 사이에 전기 접속을 이루도록 그 위에 형성된 전기 패턴 또는 회로를 갖고 있다.  제1범프는 사전 동작 시험 소켓 상에 고정될 반도체 베어 칩 등의 반도체 부품의 외부 단자 상에 인접하도록 구성되어 있다.  제2범프는 제1범프의 측면 위치에서 가요성 회로 부재에 형성되고 캐리어의 도전성 접점에 하나씩 대응하게 대면하도록 배열되며, 이로써 가요성 회로 부재가 캐리어 상에 놓일 때 제2범프를 캐리어의 도전성 접점과 전기 접속되게 위치시킨다.
Patent KR-20000021769-A (KR)
Title: Structure for installing back shelf trim of vehicle
Inventor: CHOI IN SAN
IPC: B60R7/08
Filed: 1998-09-30
Abstract: PURPOSE: A structure for installing a back shelf trim of a vehicle is provided to reduce the costs of components through the removal of bracket by quickly installing the back shelf trim without using a separate bracket and to improve the performance not by operating the work of screw. CONSTITUTION: A back shelf trim is installed in a space between a rear seat and a rear glass(400). Because a feeding flap(110) is integrally formed in the rear part of the back shelf trim(100), the feeding flap(110) is inserted inside a feeding groove(310) formed in a lower panel(300) of rear glass placed in the rear glass(400) by lifting the back shelf trim(100). Because the feeding flap(110) installed in the back shelf trim(100) is so formed as to be exposed outside the back shelf trim(100), the work for inserting the feeding flap(100) into the feeding groove(310) for installing the back shelf trim(100) is easy and a worker is able to establish the position exactly once.
Patent KR-20000021864-A (KR)
Title: Apparatus for adjusting video on demand server load
Inventor: YIM TAE BEOM
IPC: H04N7/173
Filed: 1998-09-30
Abstract: PURPOSE: An apparatus for adjusting a video on demand server load is provided to have a compatibility between a session & resource manager(SRM) and a video on demand(VOD) by adjusting a load so as to be connected with a corresponding VOD server which performs a client demand. CONSTITUTION: In an apparatus for adjusting a video on demand server load, a network manager(210) intermediates messages provided from a video on demand(VOD) server(100) and from a session & resource manager(SRM)(120), respectively. A message intermediation part(220) is connected to the network manager, and intermediates a communication message between the VOD server and the SRM. A server state data storing part(250) stores data for adjusting a load for each of multi VOD servers. A load adjusting manager(230) detects an address of a corresponding VOD server of the multi VOD servers by the data of the server state data storing part when a client service demand message is provided through the network manager. A sever address storing part(240) stores address information of a VOD server provided from the load adjusting manager.
Patent KR-19990036816-A (KR)
Title: 액정표시소자 및 그의 제조방법
IPC: G02F1/136
Filed: 1998-10-02
Abstract: 본 발명의 목적은 액티브매트릭스 기판에 대하여 강한 접착력을 갖는 주상 스페이서의 도입에 의해, 종래의 기술보다도 액정층의 두께를 기판면내에서 얼룩없이 정확하게 제어하면서, 또한 러빙처리시에 생기는 배향의 흐트러짐을 없게하고, 표시성능이 저하하는 것을 방지하는 것이다. 매트릭스상으로 배치된 스위칭소자군 및 화소전극군을 갖는 액티브매트릭스 기판에서, 스위칭소자에 접속된 게이트배선 또는 소스배선상에서 스위칭소자의 근방 또는 스위칭소자상에 주상 스페이서가 형성된다. 또한, 액티브매트릭스 기판상에 형성된 배향막용 수지막에 대한 러빙처리를 실시함에 있어서, 주상 스페이서의 배후에 생기는 배향 흐트러짐 영역이 화소전극과는 실질적으로 겹치지 않는 방향을 러빙방향으로 설정하여 러빙처리를 행한다.
Patent KR-19990044844-A (KR)
Title: 초크리스 압연기의 롤 재조합 방법 및 장치
IPC: B21B31/10
Filed: 1998-10-09
Abstract: (과제) 상하의 작업롤 단위를 예비품으로 하여 롤을 재조합할 수 있는 설비 코스트가 낮은 초크리스 압연기의 롤 재조합 방법 및 장치를 제공한다. 
     (해결수단) 상하 작업롤 (8, 9) 단을 지지하는 베어링 (7) 을 하우징 (2) 상의 회전 부시 (3) 의 편심 위치에 지지하고, 상기 회전 부시 (3) 를 회전운동시킴으로써, 롤 갭을 설정하는 초크리스 압연기 (21) 에 있어서, 상기 초크리스 압연기 (21) 를 열간 압연라인 (20) 상에서 라인과 직각 방향으로 뻗은 압연기 인출궤도 (24) 상으로 인출하고, 가장 가까운 위치에서 구동측 하우징 (2, 2') 을 압연기 인출궤도 (24) 상에 고정시키고, 또한 압연기 인출궤도 (24) 와 상하 작업롤 (8, 9) 간에 압연기 인출궤도 (24) 와 직각 방향으로 지지가대 (27) 를 이동하여 끼워맞춤으로써 상하 작업롤 (8, 9) 을 가대상에 지지하고, 이어서 작업측 하우징 (2, 2") 과 롤 지지가대 (27) 및 상하 작업롤 (8, 9) 단위를, 상호 또한 구동측 하우징 (2, 2') 과 분리시켜 압연기 인출궤도 (24) 상으로 각각 이동하여 정지시키고, 롤 지지가대 (27) 및 상하 작업롤 (8, 9) 단위를 압연기 인출궤도 (24) 와 직교하는 롤 재조합 궤도 (29) 상으로 이동시켜, 예비의 상하-작업롤 (8, 9) 단위, 또는 예비의 롤 지지가대 (27) 및 상하 작업롤 (8, 9) 단위와 교체한다.
Patent KR-20000025320-A (KR)
Title: Amusement balloon
Inventor: YOON HAN GUL
IPC: A63G31/00
Filed: 1998-10-10
Abstract: PURPOSE: An amusement balloon is provided which has safety in using and floating like a bird without power equipment in balloon. CONSTITUTION: A balloon is composed of feathers similar to hang glider and a cockpit. Aflame and fabric of feathers is made of solid and light material. A device which blows air is placed on regular orbit and is operated temporarily to support the balloon as it comes close. A sensor sensing approach of the balloon is possible by conventional technology.
Patent KR-19990037309-A (KR)
Title: 캐스케이드된 델타 시그마 변조기
IPC: H03M1/08
Filed: 1998-10-23
Abstract: 1비트 신호들을 처리하는 신호처리기는 직렬로 연결된 최소한 한 쌍의 델타 시그마 변조기들(DSM)로 구성되어 있다. 상기 DSM의 쌍중 한 개는 DSM들의 쌍의 다른 것의 신호밴드 잡음-형성 필터특성에 대해 상보적인 신호밴드 잡음-형성 필터특성를 가지고 있다.
Patent KR-20000033010-A (KR)
Title: Improved purification method of rna helicase of hepatitis c virus
Inventor: JANG HO JIN
IPC: C07K1/00
Filed: 1998-11-19
Abstract: PURPOSE: A purification method of RNA helicase from hepatitis C virus (HCV) is provided which results high yields and high purity of purified protease and saves times for the process of purification. CONSTITUTION: E. coli cells expressing Korean type HCV RNA helicase of which carboxy terminal having RNA helicase activity is isolated from NS 3 protein and tagged with histidine, are cultivated. The precipitated E.coli cells from centrifugation are suspended in the 20mM Tris buffer (pH 8.0-9.0) containing 0.1M NaCl and 1mM DTT or beta-mecapto ethanol and disintegrated by ultrasonication method. Supernatant of disintegrated cells is applied to Ni-NTA affinity column. Eluted protein with imidazole gradient is pooled and mixed with 20mM Tris buffer (pH 8.0) containing 0.1M NaCl and 1mM DTT. The mixture is applied to Q-Sepharose column and eluted with buffer having NaCl. The final yield of RNA helicase is 20mg/L and purity of protease is 99% based on capillary electrophoresis method.
Patent KR-20000033113-A (KR)
Title: Structure of motor coil bobbin
Inventor: KIM JIN GON
IPC: H02K3/46
Filed: 1998-11-19
Abstract: PURPOSE: A motor coil bobbin structure is provided to wind coil a sloped coil winding part in line in case that the coil winding part of a bobbin where the coil is wound is formed to be sloped. CONSTITUTION: A motor coil bobbin structure enables not only the optimization of a volume design of a coil(C) winding part(64) but also the optimization design of a line radius and a number of winding of the coil wound around the coil winding part, by making the arrangement winding of the coil by winding the coil by forming a stepped sill formed in steps in the coil winding part having a sloped surface. The structure comprises: a bobbin(60) comprising the coil winding part where a stepped slope groove comprising a first stepped part(62) and a second stepped part(63) is formed; and the coil wound from a bottom(61) of the coil winding part in layer upon layer.
Patent KR-20000033779-A (KR)
Title: Washing tub of washing machine
Inventor: JEONG DONG SAN
IPC: D06F37/20
Filed: 1998-11-25
Abstract: PURPOSE: A washing tub of a washing machine is provided to prevent the twisting and the tangle of the washing continuously rubbed with an inner wall of the washing tub at a washing process by installing a guide ring to be able to rotate in a circumferential direction in the inner wall of the washing tub. CONSTITUTION: After operating a washing machine, washing water is supplied into the inside of the washing tub(40). A detergent is supplied with the washing water through a dissolving device of detergent installed separately. The washing water supplied into the inside of the washing tub(40) is stored inside a water tank(20) by removing through a dehydrating slot(411). When the appropriate amount of the washing water is stored in the water tank(20), power is generated by feeding the power in a motor(31), and a washing current reversed by a wing(61) is formed by rotating a pulsator(60) forward and reversely with a rotating shaft(33) of a clutch(32). A washing is performed during rubbing the laundry with an inner wall of the washing tub(40) and the wing(61) of the pulsator(60) by the reversed washing current. The laundry is strongly clashed with the inner wall of the washing tub(40) according to the washing current. Thereby the twisting and the tangle of the other laundry are not generated by sliding with a guide ring(43) at the rubbing of the laundry with the inner wall of the washing tub(40).
Patent KR-20000033859-A (KR)
Title: Plasma display element for radio frequency and driver thereof
Inventor: SI SEOK GON
IPC: H01J11/22
Filed: 1998-11-26
Abstract: PURPOSE: A plasma display element for radio frequency and a driver driving thereof are provided for performing a sustain discharge using radio frequency in a plasma display element. CONSTITUTION: A plasma display element for radio frequency and a driver driving the same include an upper board(14), a lower board(12), a sustain electrode(18), a radio frequency electrode(22), and a compartment(24). The lower board(12) includes an address electrode. The sustain electrode(18) is arranged to be perpendicular to the address electrode. The radio frequency electrode(22) is formed on the upper board(14) and a radio frequency is applied to the radio frequency electrode(22). The compartment(24) is formed between the lower board(12) and the upper board(14) and divides each of discharge cells.
Patent KR-20000040677-A (KR)
Title: Device and method for measuring frictional loss of shaft for airtight compressor
Inventor: LEE GYU HAN
IPC: F04B51/00
Filed: 1998-12-19
Abstract: PURPOSE: A device and a method are provided to accurately measure frictional loss by measuring angular velocity and angular acceleration for the formula of motion when a shaft stops after rotating normally. CONSTITUTION: A motor(150) rotates a shaft(60) at normal velocity with power. Then an angular velocity and angular acceleration are measured when the shaft stops with powering off. The measured angular velocity and angular acceleration are input into the formula of motion for obtaining frictional loss. The formula is that tera theta + C theta' = 0. Herein, the tera is a rotation moment of inertia and the C is a viscosity reduction coefficient. The theta is the angular velocity and the theta' is the angular acceleration. The shaft rotates by a motor(150) composed of a frame(30), the shaft, a stator(90) and a rotor(100).
Patent KR-20000041846-A (KR)
Title: Circuit for removing echoes and sidetones in exchange
Inventor: PARK JAE MIN
IPC: H04M3/00
Filed: 1998-12-23
Abstract: PURPOSE: A circuit for removing echoes and sidetones in an exchange is provided to improve speech quality, by removing the echoes and the sidetones generated when two subscribers talk over the phone in the exchange. CONSTITUTION: A circuit for removing echoes and sidetones in an exchange comprises a first linear converter(301), a sidetones removing filter(304), a first pulse code modulation(PCM) converter(311), a second linear converter(312), an echoes removing filter(314), a second PCM converter(318), and a speech detector(305). The first linear converter converts PCM data received from a first subscriber into analog signals. The sidetones removing filter retrieves the sidetones under predetermined control, and removes the sidetones in the signals output from the first linear converter. The first PCM converter receives the sidetones-removed signals, and converts the signals into the PCM data. The second linear converter converts PCM data received from a second subscriber into analog signals. The echoes removing filter retrieves the echoes under predetermined control, and removes the echoes in the signals output from the second linear converter. The second PCM converter converts the echoes-removed signals into the PCM data. The speech detector detects a speech status between the first subscriber and the second subscriber, to control the sidetones removing filter and the echoes removing filter.
Patent KR-20000042937-A (KR)
Title: Apparatus for preventing complexity in multi-bus master system
Inventor: JO HONG SEOK
IPC: G06F13/36
Filed: 1998-12-28
Abstract: PURPOSE: An apparatus for preventing a complexity in a multi-bus master system is provided to prevent a deadlock for a central processing unit by counting at the point of certificating a bus possessory right. CONSTITUTION: An apparatus for preventing a complexity in a multi-bus master system comprises a timer(220) and an arbiter(220). The multi-bus master system has a memory, a memory controller, a Central Processing Unit(CPU), and a second bus master. The timer(220) generates a fake ready signal to notify, when a count is over a threshold limit values, by beginning to count at the point of certificating a bus possessory right. The arbiter(220) returns the bus possessory right to the CPU, when the fake ready signal is certificated from the timer(220), after certificating a signal certificating to use the bus to the second bus master, when a hold recognizing signal is certificated from the CPU in response to certification of the hold signal to the CPU, by being certificated a signal asking the bus possessory right from the second bus master and then certificating the hold signal to the CPU.
Patent KR-20000045021-A (KR)
Title: Method for determining a water level in a washing machine
Inventor: KANG SEONG GU
IPC: D06F33/02
Filed: 1998-12-30
Abstract: PURPOSE: A method for determining a water level is provided to determine an optimum water level by determining as a washing water level a water level set in the EEPROM corresponding to the number of rotation pulses. CONSTITUTION: A numbers of motor rotation pulses according to variations of the tensions of a V-belt and the water level values corresponding to the numbers of motor rotation pulses are set in the EEPROM(S201). Washing water is supplied to a detection level according to a washing operation signal, a motor is forwardly and reversely rotated for a certain time, and the driving of the motor is stopped to be inertially rotated(S205). The number of inertia rotation pulses of the motor generated on the inertia rotation of the motor is detected(S206).
Patent KR-20000045209-A (KR)
Title: Thermoplastic resin composition excellent in steam resistance
Inventor: SHIN SUNG KIL
IPC: C08L35/00
Filed: 1998-12-30
Abstract: PURPOSE: A thermoplastic resin composition having improved steam resistance using the reactivity of maleic acid anhydride is provided which is suitable for housings of an electric rice cooker and an electric range. CONSTITUTION: A composition which is hardly discoloring and deterioration even in the presence of heat and steam and excellent in steam resistance comprises (A) 5 to 50% by weight of a maleic acid anhydride copolymer, which has 20 to 55 parts by weight of a sum of maleic acid anhydride and a N-(substituted)maleimide monomer and an aromatic vinyl monomer content of 80 to 45 parts by weight, (B) 60 to 10% by weight of a vinyl-based graft copolymer, (C) 70 to 0% by weight of a copolymer of containing an aromatic vinyl monomer and a cyanided vinyl monomer, (D) 0.1 to 3 parts by weight of a metal stearate slip agent comprising a bivalent or more metals based on the total weight of 100 parts weight.
Patent KR-20000045689-A (KR)
Title: Axial fan for refrigerator
Inventor: CHOI MU YONG
IPC: F04D29/38
Filed: 1998-12-30
Abstract: PURPOSE: An axial fan for a refrigerator is provided to form blades to have a larger sweep angle, a larger pitch angle, and a larger camber for smooth suction and discharge of air in a machinery chamber, thereby increasing suction and discharge air flow and minimizing noise due to unnecessary air flow. CONSTITUTION: An axial fan for a refrigerator includes a hub connected to a motor shaft and a plurality of blades(55) mounted on the hub, wherein the number of the blades is three and a ratio of an inner diameter(ID) to an outer diameter(OD) is 0.2-0.3. In the blades, the outer diameter is 146±1mm, inner diameter is 34±1mm, a distance advanced forward(FD) is (26.0 to 26.5)±1mm, and a distance withdrawn backward(RD) is (25.5 to 26.0)±1mm. A maximum camber position of the blades is 0.7-0.75 uniformly from a blade hub to a blade tip, wherein a maximum camber is 3.1-3.4% at the blade hub and 9.1-9.4% at the blade tip in a linear distribution from the blade hub to the blade tip.