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(12) Patent: | (11) CA 2217972 |
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(54) English Title: | GREYWATER HEAT RECOVERY DEVICE USING A COMBINED THERMOSYPHON/HEAT PIPE PRINCIPLE |
(54) French Title: | DISPOSITIF DE RECUPERATION DE LA CHALEUR DES EAUX USEES METTANT EN APPLICATION LES PRINCIPES COMBINES DU THERMOSIPHON ET DU CALODUC |
Status: | Deemed expired |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | ADE & COMPANY INC. |
(74) Associate agent: | |
(45) Issued: | 2004-03-09 |
(22) Filed Date: | 1997-10-09 |
(41) Open to Public Inspection: | 1999-04-09 |
Examination requested: | 2000-09-18 |
Availability of licence: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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A heat recovery device recovers heat from a waste water pipe or the like. The device includes an evaporator chamber surrounding a length of the pipe. The chamber contains a refrigerant in both liquid and vapour states. A wick surrounding the pipe within the evaporator chamber extends into the liquid state refrigerant. A vapour outlet from the evaporator chamber above the liquid refrigerant leads to a condenser chamber around a container for liquid to be heated. The condenser chamber has an outlet connected to the evaporator chamber for delivering liquid refrigerant from the condenser chamber to the evaporator chamber. Heat in the pipe evaporates refrigerant from the wick. The evaporated refrigerant then travels into the condenser chamber where the cold surface of the water chamber extracts heat from the refrigerant and condenses it to be discharged back to the evaporator chamber. The water container in the condenser chamber is connected into the hot water system.
Un dispositif de récupération de chaleur récupère de la chaleur à partir d'un tuyau d'eaux usées ou analogues. Le dispositif comprend une chambre d'évaporateur entourant une longueur du tuyau. La chambre contient un liquide frigorigène à la fois dans des états liquide et gazeux. Une mèche entourant le tuyau à l'intérieur de la chambre d'évaporateur s'étend dans le fluide frigorigène à l'état liquide. Un orifice de sortie de vapeur à partir de la chambre d'évaporateur au-dessus du fluide frigorigène liquide conduit à une chambre de condenseur autour d'un contenant pour qu'un liquide soit chauffé. La chambre de condenseur a un orifice de sortie relié à la chambre d'évaporateur pour distribuer le fluide frigorigène liquide de la chambre de condenseur à la chambre d'évaporateur. La chaleur dans le tuyau fait évaporer le fluide frigorigène à partir de la mèche. Le fluide frigorigène évaporé se déplace ensuite dans la chambre de condenseur dans laquelle la surface froide de la chambre d'eau extrait de la chaleur à partir du fluide frigorigène et la condense pour que celle-ci soit de nouveau évacuée vers la chambre d'évaporateur. Le contenant d'eau dans la chambre de condenseur est relié dans le système d'eau chaude.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Administrative Status , Maintenance Fee and Payment History should be consulted.
Title | Date |
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Forecasted Issue Date | 2004-03-09 |
(22) Filed | 1997-10-09 |
(41) Open to Public Inspection | 1999-04-09 |
Examination Requested | 2000-09-18 |
(45) Issued | 2004-03-09 |
Deemed Expired | 2014-10-09 |
There is no abandonment history.
Fee Type | Anniversary Year | Due Date | Amount Paid | Paid Date |
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Application Fee | $150.00 | 1997-10-09 | ||
Maintenance Fee - Application - New Act | 2 | 1999-10-12 | $50.00 | 1999-10-01 |
Request for Examination | $200.00 | 2000-09-18 | ||
Maintenance Fee - Application - New Act | 3 | 2000-10-10 | $50.00 | 2000-09-29 |
Maintenance Fee - Application - New Act | 4 | 2001-10-09 | $50.00 | 2001-08-31 |
Maintenance Fee - Application - New Act | 5 | 2002-10-09 | $75.00 | 2002-09-20 |
Maintenance Fee - Application - New Act | 6 | 2003-10-09 | $75.00 | 2003-10-06 |
Final Fee | $150.00 | 2003-12-19 | ||
Maintenance Fee - Patent - New Act | 7 | 2004-10-11 | $100.00 | 2004-09-20 |
Maintenance Fee - Patent - New Act | 8 | 2005-10-10 | $100.00 | 2005-09-19 |
Maintenance Fee - Patent - New Act | 9 | 2006-10-09 | $100.00 | 2006-08-22 |
Maintenance Fee - Patent - New Act | 10 | 2007-10-09 | $125.00 | 2007-08-13 |
Maintenance Fee - Patent - New Act | 11 | 2008-10-09 | $125.00 | 2008-07-23 |
Maintenance Fee - Patent - New Act | 12 | 2009-10-09 | $125.00 | 2009-08-27 |
Maintenance Fee - Patent - New Act | 13 | 2010-10-11 | $125.00 | 2010-07-19 |
Maintenance Fee - Patent - New Act | 14 | 2011-10-10 | $125.00 | 2011-07-28 |
Maintenance Fee - Patent - New Act | 15 | 2012-10-09 | $225.00 | 2012-07-10 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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PROSKIW, GARY |
Past Owners on Record |
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None |