System and method for controlling a water heater
A system for controlling a water heating system senses the temperature of new (unheated) water and uses any drop in that temperature as an early, quantitative measure of the demand for hot water within the system. The heater itself is turned "on" and "off" with respect to a contr...
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| creator | KRAUSE TIMOTHY D WEEKS LEO J |
| description | A system for controlling a water heating system senses the temperature of new (unheated) water and uses any drop in that temperature as an early, quantitative measure of the demand for hot water within the system. The heater itself is turned "on" and "off" with respect to a control set point temperature (TC) which increases with decreasing inlet water temperature. Thus, the control set point is increased above a baseline by an amount related to the amount of unheated water drawn into the heater to replenish the heated water being used. In a preferred embodiment, a calculated demand value proportional to the drop in inlet water temperature (TI) is summed over time to reflect the time during which a given demand condition continues. When the heater is ultimately turned "off", signifying that the hot water supply temperature (TS) is substantially higher than the control temperature (TC), the control temperature is reset to its baseline value. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US5626287A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US5626287A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US5626287A3</originalsourceid><addsrcrecordid>eNrjZDAIriwuSc1VSMxLUchNLcnIT1FIyy9SSM7PKynKz8nJzEtXSFQoTyxJLVLISAVRPAysaYk5xam8UJqbQd7NNcTZQze1ID8-tbggMTk1L7UkPjTY1MzIzMjC3NGYsAoAr4YqkQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>System and method for controlling a water heater</title><source>esp@cenet</source><creator>KRAUSE; TIMOTHY D ; WEEKS; LEO J</creator><creatorcontrib>KRAUSE; TIMOTHY D ; WEEKS; LEO J</creatorcontrib><description>A system for controlling a water heating system senses the temperature of new (unheated) water and uses any drop in that temperature as an early, quantitative measure of the demand for hot water within the system. The heater itself is turned "on" and "off" with respect to a control set point temperature (TC) which increases with decreasing inlet water temperature. Thus, the control set point is increased above a baseline by an amount related to the amount of unheated water drawn into the heater to replenish the heated water being used. In a preferred embodiment, a calculated demand value proportional to the drop in inlet water temperature (TI) is summed over time to reflect the time during which a given demand condition continues. When the heater is ultimately turned "off", signifying that the hot water supply temperature (TS) is substantially higher than the control temperature (TC), the control temperature is reset to its baseline value.</description><edition>6</edition><language>eng</language><subject>BLASTING ; CONTROLLING ; DOMESTIC HOT-WATER SUPPLY SYSTEMS ; DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATINGSYSTEMS ; ELEMENTS OR COMPONENTS THEREFOR ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; PHYSICS ; RANGES ; REGULATING ; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES ; VENTILATING ; WEAPONS</subject><creationdate>1997</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=19970506&DB=EPODOC&CC=US&NR=5626287A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19970506&DB=EPODOC&CC=US&NR=5626287A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KRAUSE; TIMOTHY D</creatorcontrib><creatorcontrib>WEEKS; LEO J</creatorcontrib><title>System and method for controlling a water heater</title><description>A system for controlling a water heating system senses the temperature of new (unheated) water and uses any drop in that temperature as an early, quantitative measure of the demand for hot water within the system. The heater itself is turned "on" and "off" with respect to a control set point temperature (TC) which increases with decreasing inlet water temperature. Thus, the control set point is increased above a baseline by an amount related to the amount of unheated water drawn into the heater to replenish the heated water being used. In a preferred embodiment, a calculated demand value proportional to the drop in inlet water temperature (TI) is summed over time to reflect the time during which a given demand condition continues. When the heater is ultimately turned "off", signifying that the hot water supply temperature (TS) is substantially higher than the control temperature (TC), the control temperature is reset to its baseline value.</description><subject>BLASTING</subject><subject>CONTROLLING</subject><subject>DOMESTIC HOT-WATER SUPPLY SYSTEMS</subject><subject>DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATINGSYSTEMS</subject><subject>ELEMENTS OR COMPONENTS THEREFOR</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>PHYSICS</subject><subject>RANGES</subject><subject>REGULATING</subject><subject>SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</subject><subject>VENTILATING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1997</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDAIriwuSc1VSMxLUchNLcnIT1FIyy9SSM7PKynKz8nJzEtXSFQoTyxJLVLISAVRPAysaYk5xam8UJqbQd7NNcTZQze1ID8-tbggMTk1L7UkPjTY1MzIzMjC3NGYsAoAr4YqkQ</recordid><startdate>19970506</startdate><enddate>19970506</enddate><creator>KRAUSE; TIMOTHY D</creator><creator>WEEKS; LEO J</creator><scope>EVB</scope></search><sort><creationdate>19970506</creationdate><title>System and method for controlling a water heater</title><author>KRAUSE; TIMOTHY D ; WEEKS; LEO J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US5626287A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1997</creationdate><topic>BLASTING</topic><topic>CONTROLLING</topic><topic>DOMESTIC HOT-WATER SUPPLY SYSTEMS</topic><topic>DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATINGSYSTEMS</topic><topic>ELEMENTS OR COMPONENTS THEREFOR</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>PHYSICS</topic><topic>RANGES</topic><topic>REGULATING</topic><topic>SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES</topic><topic>VENTILATING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>KRAUSE; TIMOTHY D</creatorcontrib><creatorcontrib>WEEKS; LEO J</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KRAUSE; TIMOTHY D</au><au>WEEKS; LEO J</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>System and method for controlling a water heater</title><date>1997-05-06</date><risdate>1997</risdate><abstract>A system for controlling a water heating system senses the temperature of new (unheated) water and uses any drop in that temperature as an early, quantitative measure of the demand for hot water within the system. The heater itself is turned "on" and "off" with respect to a control set point temperature (TC) which increases with decreasing inlet water temperature. Thus, the control set point is increased above a baseline by an amount related to the amount of unheated water drawn into the heater to replenish the heated water being used. In a preferred embodiment, a calculated demand value proportional to the drop in inlet water temperature (TI) is summed over time to reflect the time during which a given demand condition continues. When the heater is ultimately turned "off", signifying that the hot water supply temperature (TS) is substantially higher than the control temperature (TC), the control temperature is reset to its baseline value.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BLASTING CONTROLLING DOMESTIC HOT-WATER SUPPLY SYSTEMS DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATINGSYSTEMS ELEMENTS OR COMPONENTS THEREFOR HEATING LIGHTING MECHANICAL ENGINEERING PHYSICS RANGES REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES VENTILATING WEAPONS |
| title | System and method for controlling a water heater |
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