AIR CONDITIONING DEVICE
Provided is an air-conditioning apparatus having a low-outside-air-temperature cooling operation mode. The air-conditioning apparatus includes: a refrigerant circuit in which a compressor, an outdoor heat exchanger, a pressure reducing device, and an indoor heat exchanger are connected in sequence b...
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| creator | TAKENAKA, Naofumi KONDO, Masakazu ISHIMURA, Shohei TADA, Yoshiyuki KAWASHIMA, Atsushi |
| description | Provided is an air-conditioning apparatus having a low-outside-air-temperature cooling operation mode. The air-conditioning apparatus includes: a refrigerant circuit in which a compressor, an outdoor heat exchanger, a pressure reducing device, and an indoor heat exchanger are connected in sequence by a pipe, and configured to allow refrigerant to cycle through the refrigerant circuit; an outdoor fan configured to send air to the outdoor heat exchanger; an outdoor air temperature sensor configured to measure a temperature of outside air; an indoor heat exchanger intermediate temperature sensor configured to measure a temperature of refrigerant flowing through an intermediate portion of the indoor heat exchanger; an indoor heat exchanger outlet temperature sensor configured to measure a temperature of refrigerant flowing through an outlet of the indoor heat exchanger; and a controller configured to, when a measured value from the outdoor air temperature sensor is equal to or less than a predetermined value, perform the low-outside-air-temperature cooling operation mode, wherein in the low-outside-air-temperature cooling operation mode, the controller is configured to reduce a rotation speed of the outdoor fan, and to, when a difference between a measured value from the indoor heat exchanger outlet temperature sensor and a measured value from the indoor heat exchanger intermediate temperature sensor is equal to or greater than a first threshold, increase an opening degree of the pressure reducing device. |
| format | Patent |
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The air-conditioning apparatus includes: a refrigerant circuit in which a compressor, an outdoor heat exchanger, a pressure reducing device, and an indoor heat exchanger are connected in sequence by a pipe, and configured to allow refrigerant to cycle through the refrigerant circuit; an outdoor fan configured to send air to the outdoor heat exchanger; an outdoor air temperature sensor configured to measure a temperature of outside air; an indoor heat exchanger intermediate temperature sensor configured to measure a temperature of refrigerant flowing through an intermediate portion of the indoor heat exchanger; an indoor heat exchanger outlet temperature sensor configured to measure a temperature of refrigerant flowing through an outlet of the indoor heat exchanger; and a controller configured to, when a measured value from the outdoor air temperature sensor is equal to or less than a predetermined value, perform the low-outside-air-temperature cooling operation mode, wherein in the low-outside-air-temperature cooling operation mode, the controller is configured to reduce a rotation speed of the outdoor fan, and to, when a difference between a measured value from the indoor heat exchanger outlet temperature sensor and a measured value from the indoor heat exchanger intermediate temperature sensor is equal to or greater than a first threshold, increase an opening degree of the pressure reducing device.</description><language>eng ; fre ; ger</language><subject>AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING ; BLASTING ; COMBINED HEATING AND REFRIGERATION SYSTEMS ; HEAT PUMP SYSTEMS ; HEATING ; LIGHTING ; LIQUEFACTION SOLIDIFICATION OF GASES ; MANUFACTURE OR STORAGE OF ICE ; MECHANICAL ENGINEERING ; RANGES ; REFRIGERATION MACHINES, PLANTS OR SYSTEMS ; REFRIGERATION OR COOLING ; VENTILATING ; WEAPONS</subject><creationdate>2024</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240228&DB=EPODOC&CC=EP&NR=4286761A4$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240228&DB=EPODOC&CC=EP&NR=4286761A4$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TAKENAKA, Naofumi</creatorcontrib><creatorcontrib>KONDO, Masakazu</creatorcontrib><creatorcontrib>ISHIMURA, Shohei</creatorcontrib><creatorcontrib>TADA, Yoshiyuki</creatorcontrib><creatorcontrib>KAWASHIMA, Atsushi</creatorcontrib><title>AIR CONDITIONING DEVICE</title><description>Provided is an air-conditioning apparatus having a low-outside-air-temperature cooling operation mode. The air-conditioning apparatus includes: a refrigerant circuit in which a compressor, an outdoor heat exchanger, a pressure reducing device, and an indoor heat exchanger are connected in sequence by a pipe, and configured to allow refrigerant to cycle through the refrigerant circuit; an outdoor fan configured to send air to the outdoor heat exchanger; an outdoor air temperature sensor configured to measure a temperature of outside air; an indoor heat exchanger intermediate temperature sensor configured to measure a temperature of refrigerant flowing through an intermediate portion of the indoor heat exchanger; an indoor heat exchanger outlet temperature sensor configured to measure a temperature of refrigerant flowing through an outlet of the indoor heat exchanger; and a controller configured to, when a measured value from the outdoor air temperature sensor is equal to or less than a predetermined value, perform the low-outside-air-temperature cooling operation mode, wherein in the low-outside-air-temperature cooling operation mode, the controller is configured to reduce a rotation speed of the outdoor fan, and to, when a difference between a measured value from the indoor heat exchanger outlet temperature sensor and a measured value from the indoor heat exchanger intermediate temperature sensor is equal to or greater than a first threshold, increase an opening degree of the pressure reducing device.</description><subject>AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING</subject><subject>BLASTING</subject><subject>COMBINED HEATING AND REFRIGERATION SYSTEMS</subject><subject>HEAT PUMP SYSTEMS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>LIQUEFACTION SOLIDIFICATION OF GASES</subject><subject>MANUFACTURE OR STORAGE OF ICE</subject><subject>MECHANICAL ENGINEERING</subject><subject>RANGES</subject><subject>REFRIGERATION MACHINES, PLANTS OR SYSTEMS</subject><subject>REFRIGERATION OR COOLING</subject><subject>VENTILATING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBB39AxScPb3c_EM8fT38_RzV3BxDfN0duVhYE1LzClO5YXS3AwKbq4hzh66qQX58anFBYnJqXmpJfGuASZGFmbmZoaOJsZEKAEAkGwfAQ</recordid><startdate>20240228</startdate><enddate>20240228</enddate><creator>TAKENAKA, Naofumi</creator><creator>KONDO, Masakazu</creator><creator>ISHIMURA, Shohei</creator><creator>TADA, Yoshiyuki</creator><creator>KAWASHIMA, Atsushi</creator><scope>EVB</scope></search><sort><creationdate>20240228</creationdate><title>AIR CONDITIONING DEVICE</title><author>TAKENAKA, Naofumi ; KONDO, Masakazu ; ISHIMURA, Shohei ; TADA, Yoshiyuki ; KAWASHIMA, Atsushi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP4286761A43</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2024</creationdate><topic>AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING</topic><topic>BLASTING</topic><topic>COMBINED HEATING AND REFRIGERATION SYSTEMS</topic><topic>HEAT PUMP SYSTEMS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>LIQUEFACTION SOLIDIFICATION OF GASES</topic><topic>MANUFACTURE OR STORAGE OF ICE</topic><topic>MECHANICAL ENGINEERING</topic><topic>RANGES</topic><topic>REFRIGERATION MACHINES, PLANTS OR SYSTEMS</topic><topic>REFRIGERATION OR COOLING</topic><topic>VENTILATING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>TAKENAKA, Naofumi</creatorcontrib><creatorcontrib>KONDO, Masakazu</creatorcontrib><creatorcontrib>ISHIMURA, Shohei</creatorcontrib><creatorcontrib>TADA, Yoshiyuki</creatorcontrib><creatorcontrib>KAWASHIMA, Atsushi</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TAKENAKA, Naofumi</au><au>KONDO, Masakazu</au><au>ISHIMURA, Shohei</au><au>TADA, Yoshiyuki</au><au>KAWASHIMA, Atsushi</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>AIR CONDITIONING DEVICE</title><date>2024-02-28</date><risdate>2024</risdate><abstract>Provided is an air-conditioning apparatus having a low-outside-air-temperature cooling operation mode. The air-conditioning apparatus includes: a refrigerant circuit in which a compressor, an outdoor heat exchanger, a pressure reducing device, and an indoor heat exchanger are connected in sequence by a pipe, and configured to allow refrigerant to cycle through the refrigerant circuit; an outdoor fan configured to send air to the outdoor heat exchanger; an outdoor air temperature sensor configured to measure a temperature of outside air; an indoor heat exchanger intermediate temperature sensor configured to measure a temperature of refrigerant flowing through an intermediate portion of the indoor heat exchanger; an indoor heat exchanger outlet temperature sensor configured to measure a temperature of refrigerant flowing through an outlet of the indoor heat exchanger; and a controller configured to, when a measured value from the outdoor air temperature sensor is equal to or less than a predetermined value, perform the low-outside-air-temperature cooling operation mode, wherein in the low-outside-air-temperature cooling operation mode, the controller is configured to reduce a rotation speed of the outdoor fan, and to, when a difference between a measured value from the indoor heat exchanger outlet temperature sensor and a measured value from the indoor heat exchanger intermediate temperature sensor is equal to or greater than a first threshold, increase an opening degree of the pressure reducing device.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
| recordid | cdi_epo_espacenet_EP4286761A4 |
| source | esp@cenet |
| subjects | AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING RANGES REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING VENTILATING WEAPONS |
| title | AIR CONDITIONING DEVICE |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-28T01%3A04%3A58IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=TAKENAKA,%20Naofumi&rft.date=2024-02-28&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EEP4286761A4%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |