# US 9,518,556 B2 · Apparatus and system for converting wave energy based on oscillating water column type > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,518,556 B2 - Document ID: US9518556B2 - Status: Granted - Kind: B2 - Application number: 14/226,836 - Filed: 2014-03-27 - Published: 2015-08-13 - Granted: 2016-12-13 - Earliest claimed: 2014-02-07 - Assignees: Seung Kwan Song - Applicants: Seung Kwan Song - Inventors: Seung Kwan Song - Web page: https://patentgrep.com/patent/US9518556B2 ## CPC - F03B 13/142: {which creates an oscillating water column} - F03B 13/24: to produce a flow of air, e.g. to drive an air turbine {(F03B13/142 takes precedence)} - Y02E 10/30: Energy from the sea, e.g. using wave energy or salinity gradient - F03B: MACHINES OR ENGINES FOR LIQUIDS (positive-displacement engines for liquid F03C; machines for liquids and gases F01; positive-displacement machines for liquids F04, rotary fluid gearing of the hydrokinetic type F16H41/00) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Provided herein is an oscillating water column type wave energy converting apparatus that is suspended underwater by a mooring device and system thereof, the apparatus and system comprising an damping plate connected to the mooring device; a post with a hollow of which both ends are open, the post extending vertically upwards from the mooring device; a turbine disposed inside the hollow of the post; and a housing of which its lower end is open and which is disposed at an upper portion of the post, wherein the turbine is rotated by air that flows according to changes in water level inside the hollow of the post. ## Claims ### Claim 1 An oscillating water column type wave energy converting apparatus that is suspended underwater by a mooring device, the apparatus comprising: an damping plate connected to the mooring device; a post with a hollow of which both ends are open, the post extending vertically upwards from the mooring device; a turbine disposed inside the hollow of the post; and a housing of which a lower end is open, the housing disposed at an upper portion of the post, wherein the turbine is rotated by air that flows according to changes in water level inside the hollow of the post, and wherein the damping plate comprises an insertion hole where the post is inserted and combined. ### Claim 2 (depends on 1) The apparatus according to claim 1, wherein the damping plate has a discal shape. ### Claim 3 (depends on 1) The apparatus according to claim 1, wherein the post has a cylinder shape. ### Claim 4 (depends on 1) The apparatus according to claim 1, wherein the turbine is a wells turbine that rotates in one direction only. ### Claim 5 (depends on 1) The apparatus according to claim 1, wherein the turbine is an impulse turbine. ### Claim 6 (depends on 1) The apparatus according to claim 1, wherein the housing has a greater diameter than the post, and surrounds a portion of an upper end of the post. ### Claim 7 (depends on 1) The apparatus according to claim 1, wherein the housing contains air in its inner upper space. ### Claim 8 (depends on 1) The apparatus according to claim 1, further comprising a generator connected to the turbine and which generates electricity by rotation of the turbine. ### Claim 9 An oscillating water column type wave energy converting system, the system comprising: a wave energy converting apparatus comprising a housing of which a lower end is open, an damping plate comprising an insertion hole, a post having a hollow inserted into the insertion hole of the damping plate and extended to an inner space of the housing, and a turbine disposed inside the hollow of the post and is rotated by air that flows according to changes in water level inside the hollow; and a mooring device that fixates the wave energy converting apparatus and prevents the wave energy converting apparatus from drifting away, wherein the housing has a greater diameter than the post, and surrounds a portion of an upper end of the post. ### Claim 10 (depends on 9) The system according to claim 9, wherein the housing contains air in its inner upper space. ### Claim 11 (depends on 9) The system according to claim 9, wherein the damping plate has a discal shape, and has the insertion hole in its center. ### Claim 12 (depends on 9) The system according to claim 9, wherein the post has a cylinder shape, and its upper end is distanced from the housing. ### Claim 13 (depends on 9) The system according to claim 9, wherein the turbine is an impulse turbine or a wells turbine. ### Claim 14 (depends on 9) The system according to claim 9, wherein the turbine is disposed at an upper end of the post surrounded by the housing. ### Claim 15 (depends on 9) The system according to claim 9, wherein the mooring device comprises a first support installed and fixated on a sea bottom, and a first connecting line connecting the first support and the damping plate. ### Claim 16 (depends on 15) The system according to claim 15, wherein the mooring device further comprises a main buoy connected to the housing and exposing a portion of the housing above surface of sea. ### Claim 17 (depends on 9) The system according to claim 9, wherein the mooring device further comprises a second support installed and fixated on a sea bottom, a second connecting line connecting the second support and the post, and a subsidiary buoy connected to the second connecting line. ### Claim 18 (depends on 9) The system according to claim 9, wherein the mooring device further comprises a third support to which the damping plate is connected and fastened, and which is installed and fixated on a sea bottom. ### Claim 19 An oscillating water column type wave energy converting system, the system comprising: a wave energy converting apparatus comprising a housing of which a lower end is open, an damping plate comprising an insertion hole, a post having a hollow inserted into the insertion hole of the damping plate and extended to an inner space of the housing, and a turbine disposed inside the hollow of the post and is rotated by air that flows according to changes in water level inside the hollow; and a mooring device that fixates the wave energy converting apparatus and prevents the wave energy converting apparatus from drifting away, wherein the housing contains air in its inner upper space. ### Claim 20 (depends on 19) The system according to claim 19, wherein the damping plate has a discal shape, and has the insertion hole in its center. ### Claim 21 (depends on 19) The system according to claim 19, wherein the post has a cylinder shape, and its upper end is distanced from the housing. ### Claim 22 (depends on 19) The system according to claim 19, wherein the turbine is an impulse turbine or a wells turbine. ### Claim 23 (depends on 19) The system according to claim 19, wherein the turbine is disposed at an upper end of the post surrounded by the housing. ### Claim 24 (depends on 19) The system according to claim 19, wherein the mooring device comprises a first support installed and fixated on a sea bottom, and a first connecting line connecting the first support and the damping plate. ### Claim 25 (depends on 24) The system according to claim 24, wherein the mooring device further comprises a main buoy connected to the housing and exposing a portion of the housing above surface of sea. ### Claim 26 (depends on 19) The system according to claim 19, wherein the mooring device further comprises a second support installed and fixated on a sea bottom, a second connecting line connecting the second support and the post, and a subsidiary buoy connected to the second connecting line. ### Claim 27 (depends on 19) The system according to claim 19, wherein the mooring device further comprises a third support to which the damping plate is connected and fastened, and which is installed and fixated on a sea bottom.