baber/WOPTO huggingface dataset:
Patent KR-20220056586-A (KR)
Inventor: JINMI YOON
IPC: C12N15/82
Filed: 2020-10-28
Abstract: The present invention relates to a method for increasing plant productivity using an OsCTPS1 gene. The present invention relates to a composition for plant productivity or seed development promotion and enhancement containing an agent increasing the mRNA or protein level of the gene, a method for producing a productivity-enhanced transgenic plant, a productivity-enhanced transgenic plant produced by the production method, and a method for plant productivity enhancement or seed development promotion. The plant productivity enhancement composition, the seed development promotion composition, the method for producing a productivity-enhanced transgenic plant, and so on of the present invention using an increase in LOC_Os01g43020 (OsCTPS1) gene expression can be useful in terms of plant productivity, yield increase, and cultivation by promoting plant seed development and enhancing productivity.
Patent KR-20220058741-A (KR)
Inventor: KIM DONG YEOP
IPC: G05D1/02
Filed: 2020-10-30
Abstract: The present invention relates to a robot driving method to increase performance of self-driving robots in dense crowds and a system for supporting the same. According to the present invention, the robot driving method comprises the following steps by a robot device: receiving time information including a congestion change time for a designated area from a control device; operating an autonomous driving algorithm on the basis of the time information, sensor data collected by a sensor unit, and a stored target position to generate a driving model; and performing driving on the basis of the generated driving model. The generating step includes a step of generating a driving model including a route avoiding a designated specific area while driving at a relatively low speed at a time when a congestion level increases and a step of generating a driving model traveling at a relatively high speed at a time when the congestion level decreases.
Patent KR-20220058215-A (KR)
Title: Separator for rechargeable lithium battery and rechargeable lithium battery including the same
Inventor: KIM BYUNG SOO
IPC: H01M50/409
Filed: 2020-10-30
Abstract: The present invention relates to a separator for a lithium secondary battery and a lithium secondary battery including the same. The separator for a lithium secondary battery comprises: a porous substrate and a coating layer positioned on at least one surface of the porous substrate. The coating layer includes: binder resin and inorganic particles. The binder resin includes: a first polymer having a structural unit represented by below chemical formula 1; and a second polymer having a structural unit represented by below chemical formula 2. A weight ratio of the first polymer and the second polymer is 35: 65 to 75: 25. The definitions of the chemical formula 1 and the chemical formula 2 are as described in the specification.
Patent KR-20220062845-A (KR)
Title: Anti-bacterial and sterilization mask for inflow and discharge of corona virus
Inventor: YOO MYOUNG OK
IPC: A01N59/00
Filed: 2020-11-09
Abstract: The present invention relates to an antibacterial and sterilization mask. An antibacterial and sterilization mask according to an embodiment of the present invention may include: a mask body having a body hole having a predetermined width formed therein and covering the mouth and nose of a wearer; bands disposed on both ends of the mask body to secure the mask body to the ears of the wearer; a mask cover disposed on one surface of the mask body to cover the body hole; and an antibacterial filter disposed between the mask body and the mask cover.
Patent KR-20220065132-A (KR)
Title: Vehicle and controlling method of vehicle
Inventor: YANG JEONG SEOG
IPC: B60W40/09
Filed: 2020-11-12
Abstract: A vehicle according to one embodiment of the present invention comprises: a driving unit which controls a vehicle velocity; a camera which detects a surrounding vehicle; and a control unit which determines the vehicle velocity, if the vehicle velocity is slower than a predetermined velocity, calculates an image vector change amount of the surrounding vehicle, and if the vector change amount of the surrounding vehicle satisfies a predetermined condition, calculates a safety distance between the vehicle and a preceding vehicle based on the vector change amount of the surrounding vehicle and controls the driving unit to control the vehicle velocity according to the calculated safety distance. The vehicle determines a driving environment based on traffic information and controls a distance between the host vehicle and the preceding vehicle.
Patent KR-20220065217-A (KR)
Title: The vehicle for whistle blower
Inventor: AHN HYUN WOO
IPC: B60P3/00
Filed: 2020-11-13
Abstract: The present invention relates to a vehicle, which is partitioned by window side partitions (50), vertical partitions (10), and entrance doors (20) so that independent spaces can be formed and secrets can be maintained in the vehicle, thereby creating an environment in which whistleblowers can report misconduct within an organization while maintaining privacy. The window side partitions (50) formed of an opaque soundproofing material are installed on both inner window surfaces excluding the driver's seat (2) inside the moving vehicle (1). The vertical partitions (10) are installed to partition the window side partitions (50) into spaces. The entrance doors (20) equipped with locking devices (22) are installed between the adjacent vertical partitions (10). The window side partitions (50), the vertical partitions (10), and the entrance doors (20) create inner spaces (30) in which portions from the ceiling of the moving vehicle (1) to a lower portion of the moving vehicle (1) and the front, rear, left, and right sides thereof are all blocked. The entrance doors (20) can be locked from the inside as an opaque pulling direction hinged door. Whether the inner spaces (30) are an empty space (22a) or whistleblowing (22b) is being performed therein can be identified from the outside. Desks (40) and chairs (60) are provided in the inner spaces (30). Therefore, the moving vehicle can promote whistleblowing, thereby reducing the likelihood of corruption.
Patent KR-20210139121-A (KR)
Title: Semiconductor devices including decoupling capacitors
IPC: H01L23/538
Filed: 2020-11-13
Abstract: Methods of forming decoupling capacitors in interconnect structures formed on backsides of semiconductor devices and semiconductor devices including the same are disclosed. In an embodiment, a device includes a device layer including a first transistor; a first interconnect structure on a front-side of the device layer; a second interconnect structure on a backside of the device layer, the second interconnect structure including a first dielectric layer on the backside of the device layer; a contact extending through the first dielectric layer to a source/drain region of the first transistor; a first conductive layer including a first conductive line electrically connected to the source/drain region of the first transistor through the contact; and a second dielectric layer adjacent the first conductive line, the second dielectric layer including a material having a k-value greater than 7.0, a first decoupling capacitor including the first conductive line and the second dielectric layer.
Patent KR-20220067910-A (KR)
Title: Toothbrush sterilizer
Inventor: KIM DONG BEOM
IPC: A46B17/06
Filed: 2020-11-18
Abstract: Disclosed is a toothbrush sterilizer. The toothbrush sterilizer according to the present invention comprises: a sterilizer main body in which an internal accommodation space is opened and closed by a cover and an insertion hole connected to the accommodation space is provided in one side or the other side in the longitudinal direction thereof, wherein a toothbrush holding part where multiple toothbrushes can be mounted is formed in the internal accommodation space; and a portable sterilizer which is detachably attached to the sterilizer main body through the insertion hole and which includes an LED UV lamp provided on one side surface corresponding to bristles of a toothbrush held on the toothbrush holder. The portable sterilizer includes a vibration generation unit installed to generate constant vibration. Ultraviolet rays emitted from the LED UV lamp are diffused by the vibration of the vibration generation unit and emitted to the entire area of the bristles.
Patent KR-20220068323-A (KR)
Title: Apparatus for security of vehicle can communication and method thereof
Inventor: KIM YONG EN
IPC: H04L43/00
Filed: 2020-11-18
Abstract: Provided is a device for security of vehicle CAN communication. The device includes: a security module unit included in each node of a vehicle CAN communication network and configured to monitor an identifier (ID) of each CAN message received through a CAN transceiver to determine whether the CAN message is a malicious CAN message to perform error processing; and a control unit configured to set an ID to be monitored by the security module unit and control the security module unit not to perform monitoring on the ID when the node transmits the CAN message. Therefore, the node guarantees integrity by blocking in advance before the entire CAN message is completely received.
Patent KR-20210063246-A (KR)
Title: Compound and organic light emitting device comprising the same
Inventor: KIM KYUNGHEE
IPC: H01L51/00
Filed: 2020-11-19
Abstract: The present specification relates to a compound represented by chemical formula 1 and an organic light emitting device including the same. The present specification provides a compound represented by chemical formula 1. The organic light emitting device using the compound according to an exemplary embodiment of the present application can have a low driving voltage, high luminous efficiency, or a long lifespan.
Patent KR-20220068775-A (KR)
Title: Target apparatus
Inventor: JEONG JAY IL
IPC: G01M7/08
Filed: 2020-11-19
Abstract: Provided is a target driving apparatus which performs a collision test with a certain collision body for testing a collision prevention system. According to an aspect of the present invention, the target driving apparatus comprises: a main body including a driving module for driving and a communication module exchanging signals with an external communication device; and an inclined skirt placed to surround an outer side unit of the main body and having an inclined surface inclined from a part in contact with the main body towards an outer side and a lower side. The driving module includes: a front module placed on a front side based on the progressing direction of the main body; and a rear module placed on a rear side based on the progressing direction of the main body, and realizing a driving force greater than that of the front module. The present invention can provide a target apparatus with improved driving and handling performance according to a rear-wheel drive.
Patent KR-20220071666-A (KR)
Inventor: SUNGSOO KIM
IPC: H04M1/23
Filed: 2020-11-24
Abstract: An electronic device according to various embodiments includes: a housing; a flexible display forming at least a part of the front surface of the electronic device in a state where the housing is unfolded and disposed across a first part and a second part; a key button disposed in a first region of the side surface of the first part and including at least one protruding portion extending toward the inside of the first part; and an antenna structure disposed inside the first part with respect to the first region. The housing includes the first part, the second part, and a connecting portion disposed between the first and second parts. The second part is rotatably coupled with respect to the first part through the connecting portion. The antenna structure includes: a substrate including a plurality of layers where conductive and non-conductive layers are alternately stacked; at least one dome switch disposed above the substrate at a position corresponding to the at least one protruding portion; and a plurality of conductive patches formed on the conductive layer of the substrate. The at least one dome switch may be disposed at a corresponding position between the conductive patches. Various other embodiments are also possible.
Patent KR-20220072253-A (KR)
Inventor: YU KYUNG SU
IPC: B65G65/00
Filed: 2020-11-25
Abstract: 트리퍼용 케이블 행거장치에 대한 발명이 개시된다. 개시된 트리퍼용 케이블 행거장치는: 복수개로 행거레일부 상에 이웃하게 배치되어 행거레일부를 따라 이동되고, 케이블이 걸쳐지며, 사이에 와이어부가 배치되는 행거부와, 행거부에 장착되는 이상감지부와, 행거부에 이동가능하게 장착되고, 트리퍼카 및 와이어부 중 적어도 어느 하나와 연결되어 트리퍼카 및 와이어부의 작동에 의해 동작되며, 행거부의 작동이상여부에 따라 선택적으로 이상감지부와 접촉되는 이상감지작동부를 포함하는 것을 특징으로 한다.
Patent KR-20220074041-A (KR)
Inventor: KIM WOO SIK
IPC: C04B35/622
Filed: 2020-11-27
Abstract: 탄화규소 나노튜브 복합체의 제조 방법이 제공된다. 상기 탄화규소 나노튜브 복합체의 제조 방법은, 탄소 나노튜브가 분산된 소스 용액을 준비하는 단계, 실리콘 산화물 전구체 용액을 준비하는 단계, 상기 실리콘 산화물 전구체 용액을 상기 소스 용액에 첨가하고 교반하여, 상기 탄소 나노튜브 상에 실리콘 산화물이 코팅되는 단계, 및 상기 실리콘 산화물이 코팅된 상기 탄소 나노튜브를 열처리하여, 상기 탄소 나노튜브의 표면 상에 탄화 규소층을 형성하는 단계를 포함할 수 있다.
Patent KR-20220074333-A (KR)
Title: 착탈식 케이블
Inventor: PARK SUNGMIN
IPC: H01B9/00
Filed: 2020-11-27
Abstract: 착탈식 케이블이 제공된다. 본 발명의 일 측면에 따른 착탈식 케이블은, 복수의 플러그가 선택적으로 연결되는 착탈식 케이블로서, 제1 플러그 또는 제2 플러그에 선택적으로 결합되는 플러그 커넥터 및 플러그 커넥터로 연결되어 충전 전력을 제공하는 전력 공급부를 포함하고, 전력 공급부는 제1 플러그 연결 시에 전력을 공급하는 제1 전력공급 칩과 제2 플러그 연결 시에 전력을 공급하는 제2 전력공급 칩을 구비하고, 제1 전력공급 칩 및 제2 전력공급 칩은 서로 분리된 전기적 경로로 플러그 커넥터로 전력을 공급할 수 있다.
Patent KR-20210067943-A (KR)
Title: Organic light emitting device
Inventor: HEO DONG UK
IPC: H01L51/00
Filed: 2020-11-27
Abstract: The present specification provides an organic light emitting element, which includes: anode; cathode; a light emitting layer provided between the anode and the cathode; and a first organic material layer provided between the light emitting layer and the cathode. The organic light emitting element of the present invention has a low driving voltage, good efficiency characteristics and/or good lifespan.
Patent KR-20220078377-A (KR)
Title: 엔진배관 유속 증대장치
Inventor: KIM JUNG HWAN
IPC: F01N1/16
Filed: 2020-12-03
Abstract: 본 발명은 엔진배관 유속 증대장치에 관한 것으로, 배기가스가 회류 배출을 유도하여 배출 유속을 증대시켜서 배기가스의 배출이 원활하게 이루어지도록 함을 목적으로 한 것이다. 
즉, 본 발명은 엔진배관 유속 증대장치에 있어서, 배기관의 단부에 체결되는 유속증대관체와 유속증대관체 내부에 구성되는 유속회류관체로 구성된 것이다.
Patent KR-20220083936-A (KR)
Title: 인공지능 기반 plc 모듈을 활용한 양품/불량품 판별 방법 및 시스템
Inventor: KIM JIN YOUNG
IPC: G05B23/02
Filed: 2020-12-11
Abstract: 본 발명은 인공지능 기반 PLC 모듈을 활용한 양품/불량품 판별 방법 및 시스템에 관한 것으로, 본 발명에 따르면, 인공지능 기반 PLC 모듈을 활용한 양품/불량품 판별 방법에 있어서, 클라우드가 양품 데이터와 불량품 데이터를 수집하여 데이터셋을 저장하는 데이터 수집단계; 상기 클라우드가 설정된 모델을 이용하여 상기 데이터셋을 학습하고 학습된 모델을 인공지능 기반 양품/불량품 판별 모델로 저장하는 클라우드 처리단계; 래더 컴퓨터가 제품의 양품/불량품 판별을 위해 논리 제어 장치(PLC)를 제어하기 위한 래더 프로그램을 입력받아 상기 논리 제어 장치(PLC)로 전송하는 래더 프로그램 입력단계; 상기 논리 제어 장치(PLC)가 수신받은 상기 래더 프로그램에 따라 상기 클라우드로부터 상기 인공지능 기반 양품/불량품 판별 모델을 다운받아 인공지능 기반 PLC 모듈에 설정하는 모델 설정 단계 및 상기 인공지능 기반 PLC 모듈이 상기 논리 제어 장치(PLC)로부터 판별 시작 신호를 수신받아 제품에 대한 양품/불량품 판별을 수행하는 판별단계를 포함하는 양품/불량품 판별 방법을 제공할 수 있다. 
또한, 인공지능 기반 PLC 모듈을 활용한 양품/불량품 판별 시스템에 있어서, 양품 데이터와 불량품 데이터를 수집하여 데이터셋을 저장하고, 상기 데이터셋을 이용하여 학습된 인공지능 기반 양품/불량품 판별 모델로 저장하는 클라우드; 제품의 양품/불량품 판별을 위해 논리 제어 장치(PLC)를 제어하기 위한 래더 프로그램을 입력받는 래더 컴퓨터; 생산 현장을 제어하고 감시할 수 있으며, 상기 래더 컴퓨터로부터 상기 래더 프로그램을 수신받아 상기 클라우드에서 인공지능 기반 양품/불량품 판별 모델을 다운받는 논리 제어 장치(PLC) 및 상기 논리 제어 장치(PLC)에 의해 상기 인공지능 기반 양품/불량품 판별 모델이 설정되고, 설정된 인공지능 기반 양품/불량품 판별 모델을 통해 제품에 대한 양품/불량품 판별을 수행하는 인공지능 기반 PLC 모듈을 포함하는 양품/불량품 판별 시스템을 제공할 수 있다.
Patent KR-20210083179-A (KR)
Title: Frame structure of motor and method for manufacturing frame and armature of motor
Inventor: HORIUCHI MANABU
IPC: H02K5/04
Filed: 2020-12-15
Abstract: In a frame structure of a motor, the number of frames is 4M (M is a natural number, M>=1) and when the number of slots of an armature core is 6N (N is a natural number, N>=1), the frame structure is orthogonal to two opposing sides of the frame. In addition, the armature core is inserted into the frame to form a declination angle Θ of a predetermined range in a circumferential direction between a reference line passing through a rotation axis line of the frame and a straight line connecting magnetic poles that are point-symmetric around the rotation axis line as the center.
Patent KR-20220087946-A (KR)
Title: 영상제작 공모전 중개시스템 및 방법
Inventor: KANG YUN SEOK
IPC: G06Q30/08
Filed: 2020-12-18
Abstract: 본 발명의 영상제작 공모전 중개 서비스 제공 방법은 영상수요자 인터페이스를 통해 영상수요자의 회원정보를 입력 받는 단계와, 영상제작자 인터페이스를 통해 영상제작자의 회원정보를 입력 받는 단계와, 영상수요자가 영상수요자 인터페이스를 통해 공모전 주최정보를 입력하면, 영상제작자 인터페이스에 공모전 주최정보를 노출시키는 단계와, 영상제작자 인터페이스를 통해 응모작 영상을 입력 받는 단계와, 응모작 영상을 포함한 복수의 응모작들을 영상수요자 인터페이스를 통해 영상수요자에게 전달하는 단계와, 영상수요자 인터페이스를 통해 복수의 응모작들 중 영상수요자에 의해 선택된 수상작에 대한 정보를 입력 받는 단계와, 영상수요자 인터페이스를 통해 영상수요자로부터 상금을 지급받는 단계 및 상금 중 영상제작 공모전 중개 서비스의 수수료를 제외한 금액을 수상작의 영상제작자에게 영상제작자 인터페이스를 통해 전달하는 단계를 포함한다.
Patent KR-20220088046-A (KR)
Title: 컨베이어 벨트 방식의 플라즈마 살균 장치
Inventor: LEE CHANG HOON
IPC: A61L2/14
Filed: 2020-12-18
Abstract: 본 발명에 따른 컨베이어 벨트 방식의 플라즈마 살균 장치는, 일 측벽에서 복수의 제1 플라즈마 토출도구를 구비하고 천장에서 폐쇄되고 바닥에서 개구되는 사각통 형상의 제1 챔버; 제1 챔버의 길이 방향을 따라 볼 때 제1 챔버보다 길게 형성되어 제1 챔버를 둘러싸며 제1 챔버 아래에 복수의 가스 유입공 그리고 제1 챔버의 천장 상에 복수의 가스 유출공을 가지는 사각통 형상의 제2 챔버; 제2 챔버의 일 측부에서 제2 챔버의 외부로부터 제2 챔버 가까이 연장되는 제1 컨베이어 벨트; 제1 컨베이어 벨트 주변에서 시작하여 제2 챔버 및 제1 챔버를 지나 제2 챔버의 타 측부를 향해 연장하는 제2 컨베이어 벨트; 및 제2 챔버 아래에서 제2 챔버의 개별 가스 유입공과 마주하는 복수의 제2 플라즈마 토출도구를 포함한다.
Patent KR-20220089005-A (KR)
Inventor: KANG GU HYUN
IPC: G06K9/00
Filed: 2020-12-21
Abstract: 기관 삽관 교육을 위한 시스템의 제어 방법이 개시된다. 본 제어 방법은, 카메라 모듈이, 기관 삽관 교육을 위한 마네킹의 기관 내에 구비되어 기관의 입구 방향을 바라보는 카메라를 통해, 이미지를 획득하는 단계, 프로세싱 모듈이, 획득된 이미지를 기반으로, 피교육자가 마네킹의 성문을 보았는지 여부를 판단하는 단계를 포함한다.
Patent KR-20220089044-A (KR)
Inventor: PARK MIN SUNG
IPC: C23C16/455
Filed: 2020-12-21
Abstract: 본 발명은 기상 증착을 통하여 박막 증착이 가능한 기상 증착 화합물에 관한 것으로, 구체적으로는 원자층 증착법 (Atomic Layer Deposition, ALD) 또는 화학 기상 증착법 (Chemical Vapor Deposition, CVD)에 적용가능하고, 반응성, 휘발성 및 열적 안정성이 우수한 신규 화합물, 상기 신규 화합물을 포함하는 전구체 조성물, 상기 전구체 조성물을 이용한 박막의 제조방법, 및 상기 전구체 조성물로 제조된 박막에 관한 것이다.
Patent KR-20210080264-A (KR)
Title: Novel Lactobacillus reuteri DB2 strain and use of the same
Inventor: LEE WAN KYU
IPC: A61P1/00
Filed: 2020-12-21
Abstract: The present invention relates to a novel Lactobacillus reuteri DB2 strain (KACC 92293P) and uses thereof. The novel Lactobacillus reuteri DB2 strain (KACC 92293P) of the present invention has an activity of improving intestinal flora, natural killer (NK) cell activity and immune response-related cytokine production promoting activity, thereby being used in the manufacture of functional foods and pharmaceuticals for improving intestinal function and immune enhancement in humans as well as companion animals, and usefully used in the manufacture of enteric, probiotics, feed composition and companion animal snacks.
Patent KR-20220092292-A (KR)
Inventor: KIM GYEONG MIN
IPC: G06Q30/06
Filed: 2020-12-24
Abstract: Disclosed are a product recommendation method and a computing device for performing the same. The product recommendation method according to an embodiment of the present invention, which is a method performed in a computing device having one or more processors and a memory for storing one or more programs executed by the one or more processors, comprises operations of: obtaining sales-related information including product identification information, product evaluation information, and product purchaser information with respect to each product; extracting products similar to a product purchased by each purchaser based on sales-related information on each product; calculating a correlation coefficient between the product purchased by the purchaser and the products similar to the product for each purchaser; and generating a product list to be recommended to each purchaser based on the calculated correlation coefficient. The present invention can automatically recommend the products preferable by the purchaser.
Patent KR-20220093656-A (KR)
Title: Recommended Fabrication Equipment and B2B Distribution System
Inventor: LEESEUNGBEOM
IPC: G06Q30/06
Filed: 2020-12-28
Abstract: The present invention relates to a system and method for constructing a database by collecting data on fabric and material data, data on use for each product, sales volume data, and consuming company information, and storing the data in an archiving device to recommend fabric and material products matched with use of the consuming company and support efficient distribution and transaction of the products. An embodiment of the present invention includes: a step of constructing database; a step of classifying data by use; a step of storing the data in the archiving device; and a step of inputting, outputting, and displaying the data. The present invention enables a data searching and recommendation automation process through a button for searching and recommending fabric and material data.
Patent KR-20220095287-A (KR)
Inventor: KIM JU SUB
IPC: H04L12/12
Filed: 2020-12-29
Abstract: The present invention relates to a remote power control system using an IoT terminal, and more particularly, to a system, which remotely easily controls power cutoff/supply to a line termination device, a network terminal, a sensor, etc. using an IoT terminal connected to an LTE IoT network even when a communication failure occurs in a main line, and can restore a line. The remote power control system of the present invention comprises: a control module (200) connected to an Internet (300) and an LTE IoT network (400), and located at a head office; a branch line termination device (120) connected to the Internet (300), and communicating with the control module (200); and an IoT terminal (100) located at a branch, connected to the LTE IoT network (400) and the branch line termination device (120), and controlling power provided for the branch line termination device (120), a branch network terminal (130) or a sensor (140). When an Internet communication failure occurs between the control module (200) and the branch line termination device (120), the IoT terminal (100) and the control module (200) establish a recovery line through the LTE IoT network (400).
Patent KR-20220096705-A (KR)
Inventor: PARK CHANG HO
IPC: B65H27/00
Filed: 2020-12-31
Abstract: The present invention provides a temporary storage unit for banknotes in which running stability and durability of a tape are improved by allowing the pressure of a pinch roller for bringing banknotes and a tape into close contact with an outer circumferential surface of a drum uniformly over an entire area of the tape. The temporary storage unit for banknotes is provided with a drum for winding and rewinding the tape and banknotes together and a reel for winding and rewinding the tape. In addition, the temporary storage unit comprises: a lower guide provided to surround a lower side of the drum and guiding movement of the banknotes and the tape when storing or discharging the banknotes; and a pinch roller provided on the lower guide to bring the banknotes and the tape into close contact with an outer circumferential surface of the drum, wherein the width of the pinch roller is made corresponding to the width of the tape.
Patent KR-20220096799-A (KR)
Title: Circulation pump
Inventor: LEE YONG SEOK
IPC: F04D29/08
Filed: 2020-12-31
Abstract: An objective of the present invention is to provide a circulation pump that prevents sticking of a shaft by simply exhausting air inside a chamber in which a rotor is accommodated. According to an embodiment of the present invention, a circulation pump may comprise: an impeller for generating fluid flow; a shaft connected to the impeller and provided with a rotor; a can forming a chamber accommodating the rotor and having a stator installed around the outer circumference; a bearing holder having a bearing supporting an end of the shaft, fixed to the inside of the can, and forming a subchamber communicating with the chamber; a plug fastened to the bearing holder through the can; a valve body inserted into the subchamber through the plug and sliding with respect to the plug; an exhaust passage selectively communicating with the subchamber according to a position of the valve body relative to the plug; and a spring applying an elastic force to the valve body in a direction in which the exhaust passage is blocked with respect to the subchamber.