# US 2023/0266355 A1 · Anemometer using thermal mass air velocity meter, from which ambient temperature dependence has been removed > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0266355 A1 - Document ID: US20230266355A1 - Status: Published application - Kind: A1 - Application number: 18/014,069 - Filed: 2021-07-12 - Published: 2023-08-24 - Earliest claimed: 2020-07-13 - Assignees: Jong Deuk AHN; Chc Biotech Co., Ltd. - Applicants: Chc Biotech Co., Ltd. - Inventors: Jong Deuk AHN; Hyeong Cheol CHA - Web page: https://patentgrep.com/patent/US20230266355A1 ## CPC - G01P 5/12: using variation of resistance of a heated conductor - G01F 1/6888: {Thermoelectric elements, e.g. thermocouples, thermopiles} - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) - G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME ## Abstract Proposed is an air velocity sensor (meter) for measuring the flow velocity of a fluid, particularly, the air velocity of gas. More specifically, proposed is a technical field related to an air velocity sensor which measures air velocity or temperature through the heat transfer of a fluid by using a hot wire, that is, a heating element, of a small cross-section, and which expands the surface areas of a temperature sensor, the heating element, and a soldering part in order to further improve the accuracy of a hot wire flow velocity sensor having higher accuracy, even with respect to a low flow velocity, than a general mechanical anemometer, so as to minimize resistance, and thus can easily measure very low flow rates by inducing a quick change in a current to quickly respond to minute changes in resistance and sensitively operate, that is, by improving reaction speed. ## Claims ### Claim 1 An anemometer using a thermal mass air velocity meter, comprising: a substrate (100) on which a circuit part is formed; a heating element part (200) configured to extend from a first side of the substrate (100) and through which a heating element hole (210) in which a heating element (10) is installed is formed; a pair of heating element soldering holes (300) formed on a first side of the heating element part (200) and spaced apart vertically so that a pair of leads (12) of the heating element (10) are connected; a temperature sensor part (400) configured to extend from the first side of the heating element part (200) and through which a temperature sensor hole (410) in which the temperature sensor (20) is installed is formed; and a pair of temperature sensor soldering holes (500) formed on a second side of the temperature sensor part (400) and spaced apart vertically so that a pair of leads (22) of the temperature sensor (20) are connected, wherein the temperature sensor part (400) comprises: a first temperature sensor slit groove (420) formed on the second side of the temperature sensor part (400), formed between the pair of temperature sensor soldering holes (500), and communicated with the temperature sensor hole (410). ### Claim 2 (depends on 1) The anemometer using a thermal mass air velocity meter of claim 1, wherein the heating element part (200) comprises: a first heating element slit groove (220) formed on the first side of the heating element part (200), formed between the pair of heating element soldering holes (300), and communicated with the heating element hole (210). ### Claim 3 (depends on 1) The anemometer using a thermal mass air velocity meter of claim 1, wherein the heating element part (200) comprises: a second heating element slit groove (230) formed on a second side of the heating element part (200) and communicated with the heating element hole (210). ### Claim 4 (depends on 1) The anemometer using a thermal mass air velocity meter of claim 1, wherein the temperature sensor part (400) comprises: a second temperature sensor slit groove (430) formed on a first side of the temperature sensor part (400) and communicated with the temperature sensor hole (410). ### Claim 5 (depends on 1) The anemometer using a thermal mass air velocity meter of claim 1, wherein the heating element part (200) comprises: a first upper heating element plating pattern part (240) provided by plating gold on an upper part of a front surface of the heating element part (200) and configured to include the upper heating element soldering hole (300) of the pair of heating element soldering holes (300) therein; and a first lower heating element plating pattern part (250) provided by plating gold on a lower part of the front surface of the heating element part (200) and configured to include the lower heating element soldering hole (300) of the pair of heating element soldering holes (300) therein. ### Claim 6 (depends on 5) The anemometer using a thermal mass air velocity meter of claim 5, wherein the heating element part (200) comprises: a second upper heating element plating pattern part (260) provided by plating gold on an upper part of a rear surface of the heating element part (200) and configured to include the upper heating element soldering hole (300) of the pair of heating element soldering holes (300) therein; and a second lower heating element plating pattern part (270) provided by plating gold on a lower part of the rear surface of the heating element part (200) and configured to include the lower heating element soldering hole (300) of the pair of heating element soldering holes (300) therein. ### Claim 7 (depends on 6) The anemometer using a thermal mass air velocity meter of claim 6, wherein the heating element part (200) comprises: an upper heating element plating part (280) provided by plating gold on an upper surface of the heating element hole (210), and configured to connect the first upper heating element plating pattern part (240) and the second upper heating element plating pattern part (260). ### Claim 8 (depends on 7) The anemometer using a thermal mass air velocity meter of claim 7, wherein the heating element part (200) comprises: a lower heating element plating part (290) provided by plating gold on a lower surface of the heating element hole (210), and configured to connect the first lower heating element plating pattern part (250) and the second lower heating element plating pattern part (270). ### Claim 9 (depends on 1) The anemometer using a thermal mass air velocity meter of claim 1, wherein the temperature sensor part (400) comprises: a first upper temperature sensor plating pattern part (440) provided by plating gold on an upper part of a front surface of the temperature sensor part (400) and configured to include the upper temperature sensor soldering hole (500) of the pair of temperature sensor soldering holes (500) therein; and a first lower temperature sensor plating pattern part (450) provided by plating gold on a lower part of the front surface of the temperature sensor part (400) and configured to include the lower temperature sensor soldering hole (500) of the pair of temperature sensor soldering holes (500) therein. ### Claim 10 (depends on 9) The anemometer using a thermal mass air velocity meter of claim 9, wherein the temperature sensor part (400) comprises: a second upper temperature sensor plating pattern part (460) provided by plating gold on an upper part of a rear surface of the temperature sensor part (400) and configured to include the upper temperature sensor soldering hole (500) of the pair of temperature sensor soldering holes (500) therein; and a second lower temperature sensor plating pattern part (470) provided by plating gold on a lower part of the rear surface of the temperature sensor part (400) and configured to include the lower temperature sensor soldering hole (500) of the pair of temperature sensor soldering holes (500) therein. ### Claim 11 (depends on 2) The anemometer using a thermal mass air velocity meter of claim 2, wherein the heating element part (200) comprises: a second heating element slit groove (230) formed on a second side of the heating element part (200) and communicated with the heating element hole (210).