{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9823667","patent":{"patent_number":"US-9823667","title":"Flow rate control apparatus, storage medium storing program for flow rate control apparatus and flow rate control method","assignee":null,"inventors":[],"filing_date":"2015-07-30T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["G05D"],"num_claims":7,"abstract":"In order to keep a stable flow rate at a set flow rate value when a pressure fluctuation occurs in an upstream side of a valve, without providing an additional sensor for detecting a pressure fluctuation, a flow rate control apparatus is provided with: the valve; a flow rate sensor; a valve control part configured to control the valve so that a deviation between a set flow rate value and a measurement flow rate value is reduced, on the basis of the deviation and a set control coefficient; and a control coefficient setting part configured to set the control coefficient so that when a pressure rise occurs in the upstream side of the valve, a decreased amount in flow due to a decreased opening of the valve and an increased amount in flow due to an increased amount of a differential pressure before and after the valve, are balanced."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Flow rate control apparatus, storage medium storing program for flow rate control apparatus and flow rate control method","description":"In order to keep a stable flow rate at a set flow rate value when a pressure fluctuation occurs in an upstream side of a valve, without providing an additional sensor for detecting a pressure fluctuat","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9823667","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9823667","citation_suggestion":"Patentable. \"Flow rate control apparatus, storage medium storing program for flow rate control apparatus and flow rate control method\" (US-9823667). https://patentable.app/patents/US-9823667","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9823667","json":"https://patentable.app/api/llm-context/US-9823667","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:37:49.220Z"}