Refrigerant circulating arrangement
The degree (SH) of superheat of a refrigerant in evaporators (12 and 22) is sensed. The opening of expansion valves (11 and 21) is controlled so that the sensed each degree of superheat (SH) may equal a first preset value (SHs). The deviation ( DELTA SH) of the sensed each degree of superheat (SH) f...
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| creator | YOSHINOBU FUJITA TAKAYUKI KAMBE TOORU KUBO |
| description | The degree (SH) of superheat of a refrigerant in evaporators (12 and 22) is sensed. The opening of expansion valves (11 and 21) is controlled so that the sensed each degree of superheat (SH) may equal a first preset value (SHs). The deviation ( DELTA SH) of the sensed each degree of superheat (SH) from the first preset value (SHs) is sensed, and the maximum value ( DELTA SHmax) of the deviations sensed is sensed one after another. When the latest maximum value ( DELTA SHmax(n)) sensed is decreased blow the preceding maximum value ( DELTA SHmax(n-1)) sensed, the amount of change is sensed. It is judged whether or not the amount of change D sensed is 2 DEG C or lower and the latest maximum value ( DELTA SHmax(n)) is 1 DEG C or higher. When the conditions in this judgment are met twice consecutively, the opening control value for the expansion valves (11 and 21) is corrected in a decreasing direction. |
| format | Patent |
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The opening of expansion valves (11 and 21) is controlled so that the sensed each degree of superheat (SH) may equal a first preset value (SHs). The deviation ( DELTA SH) of the sensed each degree of superheat (SH) from the first preset value (SHs) is sensed, and the maximum value ( DELTA SHmax) of the deviations sensed is sensed one after another. When the latest maximum value ( DELTA SHmax(n)) sensed is decreased blow the preceding maximum value ( DELTA SHmax(n-1)) sensed, the amount of change is sensed. It is judged whether or not the amount of change D sensed is 2 DEG C or lower and the latest maximum value ( DELTA SHmax(n)) is 1 DEG C or higher. When the conditions in this judgment are met twice consecutively, the opening control value for the expansion valves (11 and 21) is corrected in a decreasing direction.</description><edition>5</edition><language>eng</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>1994</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=19941019&DB=EPODOC&CC=CN&NR=1093792A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19941019&DB=EPODOC&CC=CN&NR=1093792A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YOSHINOBU FUJITA</creatorcontrib><creatorcontrib>TAKAYUKI KAMBE</creatorcontrib><creatorcontrib>TOORU KUBO</creatorcontrib><title>Refrigerant circulating arrangement</title><description>The degree (SH) of superheat of a refrigerant in evaporators (12 and 22) is sensed. The opening of expansion valves (11 and 21) is controlled so that the sensed each degree of superheat (SH) may equal a first preset value (SHs). The deviation ( DELTA SH) of the sensed each degree of superheat (SH) from the first preset value (SHs) is sensed, and the maximum value ( DELTA SHmax) of the deviations sensed is sensed one after another. When the latest maximum value ( DELTA SHmax(n)) sensed is decreased blow the preceding maximum value ( DELTA SHmax(n-1)) sensed, the amount of change is sensed. It is judged whether or not the amount of change D sensed is 2 DEG C or lower and the latest maximum value ( DELTA SHmax(n)) is 1 DEG C or higher. When the conditions in this judgment are met twice consecutively, the opening control value for the expansion valves (11 and 21) is corrected in a decreasing direction.</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>1994</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAOSk0rykxPLUrMK1FIzixKLs1JLMnMS1dILAIKpafmpuaV8DCwpiXmFKfyQmluBnk31xBnD93Ugvz41OKCxOTUvNSSeGc_QwNLY3NLI0djwioAgqwmJg</recordid><startdate>19941019</startdate><enddate>19941019</enddate><creator>YOSHINOBU FUJITA</creator><creator>TAKAYUKI KAMBE</creator><creator>TOORU KUBO</creator><scope>EVB</scope></search><sort><creationdate>19941019</creationdate><title>Refrigerant circulating arrangement</title><author>YOSHINOBU FUJITA ; TAKAYUKI KAMBE ; TOORU KUBO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN1093792A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1994</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>YOSHINOBU FUJITA</creatorcontrib><creatorcontrib>TAKAYUKI KAMBE</creatorcontrib><creatorcontrib>TOORU KUBO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YOSHINOBU FUJITA</au><au>TAKAYUKI KAMBE</au><au>TOORU KUBO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Refrigerant circulating arrangement</title><date>1994-10-19</date><risdate>1994</risdate><abstract>The degree (SH) of superheat of a refrigerant in evaporators (12 and 22) is sensed. The opening of expansion valves (11 and 21) is controlled so that the sensed each degree of superheat (SH) may equal a first preset value (SHs). The deviation ( DELTA SH) of the sensed each degree of superheat (SH) from the first preset value (SHs) is sensed, and the maximum value ( DELTA SHmax) of the deviations sensed is sensed one after another. When the latest maximum value ( DELTA SHmax(n)) sensed is decreased blow the preceding maximum value ( DELTA SHmax(n-1)) sensed, the amount of change is sensed. It is judged whether or not the amount of change D sensed is 2 DEG C or lower and the latest maximum value ( DELTA SHmax(n)) is 1 DEG C or higher. When the conditions in this judgment are met twice consecutively, the opening control value for the expansion valves (11 and 21) is corrected in a decreasing direction.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record> |
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| 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 | Refrigerant circulating arrangement |
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