{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9772131","patent":{"patent_number":"US-9772131","title":"Heat pump device, and air conditioner, heat pump water heater, refrigerator, and freezing machine including heat pump device","assignee":null,"inventors":[],"filing_date":"2013-05-23T00:00:00.000Z","publication_date":"2017-09-26T00:00:00.000Z","cpc_codes":["H02M"],"num_claims":18,"abstract":"A heat pump device capable of efficiently and reliably preventing a liquid refrigerant from stagnating in a compressor an air conditioner, a heat pump water heater, a refrigerator, and a freezing machine including the heat pump device. The configuration is such that, when the compressor is under operation standby, a high-frequency voltage synchronizing with a carrier signal is supplied to the compressor motor to carry out the locked energization of the compressor motor. From respective inter-phase voltages, respective phase voltages, or respective phase currents of the compressor motor for a plurality of high-frequency energization cycles, the detection values for one high-frequency energization cycle are restored. A power value calculated using the restored detection values for one high-frequency energization cycle is controlled to coincide with a heating power command necessary for discharging the liquid refrigerant stagnated in the compressor to the outside of the compressor."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Heat pump device, and air conditioner, heat pump water heater, refrigerator, and freezing machine including heat pump device","description":"A heat pump device capable of efficiently and reliably preventing a liquid refrigerant from stagnating in a compressor an air conditioner, a heat pump water heater, a refrigerator, and a freezing mach","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9772131","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-9772131","citation_suggestion":"Patentable. \"Heat pump device, and air conditioner, heat pump water heater, refrigerator, and freezing machine including heat pump device\" (US-9772131). https://patentable.app/patents/US-9772131","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9772131","json":"https://patentable.app/api/llm-context/US-9772131","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:32:31.767Z"}