# US 11,079,127 B2 · Systems and methods for air ventilation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,079,127 B2 - Document ID: US11079127B2 - Status: Granted - Kind: B2 - Application number: 16/427,699 - Filed: 2019-05-31 - Published: 2020-02-27 - Granted: 2021-08-03 - Earliest claimed: 2018-08-22 - Assignees: Blockchain Generation Ventures - Applicants: Bao Tran; Dave Nyhof - Inventors: Bao Tran; Dave Nyhof - Web page: https://patentgrep.com/patent/US11079127B2 ## CPC - F24F 11/0001: {for ventilation (F24F11/30 takes precedence)} - H04L 63/12: {Applying verification of the received information (cryptographic mechanisms or cryptographic arrangements for data integrity or data verification H04L9/32)} - E03B 7/071: {Arrangement of safety devices in domestic pipe systems, e.g. devices for automatic shut-off} - F24F 8/10: by separation, e.g. by filtering - F24F 11/72: for controlling the supply of treated air, e.g. its pressure - G01M 3/184: {for valves} - G05B 13/0265: {the criterion being a learning criterion} - G06F 21/602: {Providing cryptographic facilities or services} - G06F 21/645: {using a third party} - G06Q 20/06: Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme - G06Q 20/36: using electronic wallets or electronic money safes - G06Q 20/3674: {involving authentication} - H04L 9/3239: {involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD} - H04L 9/3252: {using DSA or related signature schemes, e.g. elliptic based signatures, ElGamal or Schnorr schemes} - H04L 63/0428: {wherein the data content is protected, e.g. by encrypting or encapsulating the payload} - F24F 2011/0002: {for admittance of outside air} - F24F 2110/12: of the outside air - F24F 2110/22: of the outside air - F24F 2110/52: of the outside air - F24F 2110/66: Volatile organic compounds [VOC] - F24F 2110/70: Carbon dioxide - F24F 2140/40: Damper positions, e.g. open or closed - G06Q 2220/00: Business processing using cryptography - H04L 9/50: {using hash chains, e.g. blockchains or hash trees} - H04L 2209/56: Financial cryptography, e.g. electronic payment or e-cash - Y02B 30/70: Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - E03B: INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER (drilling wells, obtaining fluids in general from wells E21B; pipe-line systems in general F17D) - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract A system includes an inlet to collect air from outside a building; an air filter coupled to the inlet; a baffle to receive air from the inlet; an actuator coupled to the baffle; one or more sensors exposed to air from the air filter to determine air quality; a controller coupled to the one or more sensors and the actuator, the controller closing the baffle if air quality is below a threshold; and an outlet positioned after the baffle to deliver air to the building. ## Claims ### Claim 1 A system, comprising: an inlet to collect air from outside a building; an air filter coupled to the inlet; a baffle to receive air from the inlet; an actuator coupled to the baffle; one or more sensors exposed to air from the air filter to determine air quality; a controller coupled to the one or more sensors and the actuator, the controller closing the baffle if air quality is below a threshold; and an outlet positioned after the baffle to deliver air to the building, wherein the controller makes air characteristic entries on a blockchain with Proof of Work Collaborative (POW-C) with a wallet ledger where a result of transactions are coupled to a wallet address, wherein the controller applies elliptic curve digital signature, and wherein the controller communicates on a network with a security miner that oversees the network prior to one or more full nodes distributing workload to other miners, the controller programmed to allow all miners participating in a blockchain network to solve equations together, confirm transactions together, find new blocks together, and combine their work and calculations without having to compete, thereby supporting the POW-C and reducing the energy required to process a transaction. ### Claim 2 (depends on 1) The system of claim 1, wherein air inside the building is combined with air from the outlet. ### Claim 3 (depends on 1) The system of claim 1, wherein the air filter is removable or replaceable. ### Claim 4 (depends on 1) The system of claim 1, comprising an air heater or air conditioner coupled to the outlet. ### Claim 5 (depends on 1) The system of claim 1, wherein the actuator opens the baffle if outside air quality is better than indoor air quality. ### Claim 6 (depends on 1) The system of claim 1, wherein the actuator prevents cold or hot air from entering the building. ### Claim 7 (depends on 1) The system of claim 1, wherein the controller is below a ventilation unit. ### Claim 8 (depends on 1) The system of claim 1, comprising a hole proximal to the air filter to allow continuous monitoring of outside air even if the baffle is closed. ### Claim 9 (depends on 1) The system of claim 1, wherein the baffle in the closed position allows air to flow over the sensors to get a continuous outside air reading. ### Claim 10 (depends on 1) The system of claim 1, comprising a carbon dioxide sensor. ### Claim 11 (depends on 10) The system of claim 10, wherein the sensor measures within 400 to 5000 ppm. ### Claim 12 (depends on 1) The system of claim 1, comprising a temperature sensor. ### Claim 13 (depends on 1) The system of claim 1, comprising a humidity sensor. ### Claim 14 (depends on 1) The system of claim 1, comprising a TVOC sensor. ### Claim 15 (depends on 1) The system of claim 1, comprising a CH20 sensor. ### Claim 16 (depends on 1) The system of claim 1, comprising gas, pressure, humidity and temperature sensors. ### Claim 17 (depends on 1) The system of claim 1, comprising a Volatile Organic Compounds (VOC) sensor. ### Claim 18 (depends on 1) The system of claim 1, comprising sensors to monitor air quality inside and outside a building. ### Claim 19 (depends on 1) The system of claim 1, comprising a phone app to provide options to make automated commands based on pre-set conditions and the controller follows pre-set commands to run an air exchange fan in parallel with opening the baffle based on the pre-set commands and calculated data of air quality comparisons and if air quality outside is inferior to inside air quality, the controller stops the fan and closes the baffle. ### Claim 20 A system, comprising: an inlet to collect air from outside a building; an air filter coupled to the inlet; a baffle to receive air from the inlet; an actuator coupled to the baffle; one or more sensors exposed to air from the air filter to determine air quality; a controller coupled to the one or more sensors and the actuator, the controller closing the baffle if air quality is below a threshold, the controller controlling a make-up air system that automatically provides make-up air for exhausting equipment by bringing in outdoor air while not exhausting stale air and wherein the controller makes air characteristic entries on a blockchain with Proof of Work Collaborative (POW-C) with a wallet ledger, and wherein the controller communicates on a network with a security miner that oversees the network prior to one or more full nodes distributing workload to other miners, the controller programmed to allow all miners participating in the blockchain network to solve equations together, confirm transactions together, find new blocks together, and combine their work and calculations without having to compete, thereby supporting the POW-C and reducing the energy required to process a transaction; and an outlet positioned after the baffle to deliver air to the building.