US20110073052A1 - Fire tube condensing boiler for generating hot water - Google Patents
Fire tube condensing boiler for generating hot water Download PDFInfo
- Publication number
- US20110073052A1 US20110073052A1 US12/995,392 US99539209A US2011073052A1 US 20110073052 A1 US20110073052 A1 US 20110073052A1 US 99539209 A US99539209 A US 99539209A US 2011073052 A1 US2011073052 A1 US 2011073052A1
- Authority
- US
- United States
- Prior art keywords
- water
- space
- enclosure
- outlet connector
- thermostatic device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/0036—Dispositions against condensation of combustion products
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
- F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
- F24H1/287—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes with the fire tubes arranged in line with the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/30—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections
- F24H1/32—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections with vertical sections arranged side by side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/34—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side
- F24H1/36—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side the water chamber including one or more fire tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Definitions
- the invention relates to a fire tube condensing boiler for generating hot water.
- boilers are provided with a structure that comprises an outer enclosure, which is adapted to delimit a portion of space designed to contain the water to be heated, which is introduced cold by way of an inlet connector that is located proximate to the base of the enclosure and exits hot by way of an outlet connector that is located proximate to the top of such enclosure.
- the enclosure contains the furnace where combustion occurs, and tubes branch out from the furnace which are designed to convey the exhaust gases that convey heat to the water to be heated before being sent to the flue.
- All the described elements are advantageously made of carbon steel, which, differently from what occurs for stainless steel, ensures easy joining of the several components by welding, but in this manner such elements are subject to the danger of corrosion by the condensation that, being a condensing boiler, is generated within the exhaust gases as a consequence of the condensation of the water vapor contained in such exhaust gases.
- the aim of the present invention is to provide a fire tube condensing boiler in which the furnace is also protected against the risk of corrosion.
- FIG. 1 is a longitudinal sectional view of the boiler, in which, as in the figures that follow, the exhaust gas conveyance tubes are not shown in cross-section;
- FIG. 2 is a sectional view, taken along the line II-II of FIG. 1 ;
- FIGS. 3 and 4 are respectively views of the details shown in FIG. 1 .
- the reference numeral 1 generally designates a boiler comprising an outer enclosure 2 , which is adapted to delimit a portion of space 3 for containing the water to be heated, which is introduced cold by way of an inlet connector 3 a located proximate to the base of the enclosure and exits hot by way of an outlet connector 3 b that is located proximate to the top of the enclosure.
- the reference numeral 4 designates a furnace where the combustion generated by a burner 5 occurs
- the reference numeral 6 designates tubes designed to convey the exhaust gases in output from the furnace 4 to a chamber 7 for accessing a flue along the arrows of FIG. 1 .
- thermostatic device which will be described in detail with reference to FIG. 4 and is comprised within a stub 8 that is interposed between the outlet connector 3 b and the portion of space 3 for containment of the water to be heated.
- a thermostatic device is adapted to let the water flow out through the connector 3 b only when it reaches a preset value of the temperature that allows the accumulation, around the furnace 4 , of a mass of water that is hot enough to prevent condensation on the wall of said furnace of the water vapor contained in the exhaust gases, thus providing protection of the furnace against the risk of corrosion caused by the formation of condensation.
- Circulation of water through the boiler is in any case ensured by the presence of an external bypass line 9 , which is connected at an end 9 a to the outlet connector 3 b downstream of the stub 8 that comprises the thermostatic device, and at an end 9 b to the portion of space 3 that contains the water to be heated in a position that is interposed between the inlet connector 3 a of the cold water and a diaphragm 10 that is located below the furnace 4 and is spaced from it and is provided with ports 10 a, 10 b that are visible in FIG. 3 , so as to appropriately graduate the passage of water through it.
- an external bypass line 9 which is connected at an end 9 a to the outlet connector 3 b downstream of the stub 8 that comprises the thermostatic device, and at an end 9 b to the portion of space 3 that contains the water to be heated in a position that is interposed between the inlet connector 3 a of the cold water and a diaphragm 10 that is located below the furnace 4 and is spaced from it and is provided with ports
- the thermostatic device comprised within the stub 8 is now described with reference to FIG. 4 .
- Such device comprises a plate 11 , which is shown in the figure in the position for opening a port 8 a for the passage of water, which has been moved into such position, overcoming the action of a spring 12 , which abuts against a cross-member 8 b that is jointly connected to the stub 8 , by the action of a plurality of expanding heat-sensitive elements 13 , which are constituted by known wax-based sensors which comprise a cylinder 13 a that contains wax and a piston 13 b, which are arranged in series within a tube 14 that is jointly connected to the plate 11 and act in abutment against a block 15 that is fixed to a cross-member 16 that is jointly connected to the stub 8 .
- thermostatic device can be provided in any manner, and the same applies for the diaphragm 10 .
Abstract
A fire tube condensing boiler for generating hot water, comprising a thermostatic device between an outlet connector and a portion of space for containing the water, which is adapted to let the water flow out when it reaches a preset temperature value, and further comprising an external bypass line connected at its ends to the outlet connector downstream of the thermostatic device and to the portion of space in a position that is interposed between an inlet connector and a perforated diaphragm that is arranged below a furnace and is spaced from it.
Description
- The invention relates to a fire tube condensing boiler for generating hot water.
- The widespread diffusion achieved by fire tube condensing boilers is known; such boilers are provided with a structure that comprises an outer enclosure, which is adapted to delimit a portion of space designed to contain the water to be heated, which is introduced cold by way of an inlet connector that is located proximate to the base of the enclosure and exits hot by way of an outlet connector that is located proximate to the top of such enclosure.
- In a raised position, the enclosure contains the furnace where combustion occurs, and tubes branch out from the furnace which are designed to convey the exhaust gases that convey heat to the water to be heated before being sent to the flue.
- All the described elements are advantageously made of carbon steel, which, differently from what occurs for stainless steel, ensures easy joining of the several components by welding, but in this manner such elements are subject to the danger of corrosion by the condensation that, being a condensing boiler, is generated within the exhaust gases as a consequence of the condensation of the water vapor contained in such exhaust gases.
- The same Applicant has filed patent applications related to protection against the danger of corrosion of exhaust gas conveyance tubes.
- The aim of the present invention is to provide a fire tube condensing boiler in which the furnace is also protected against the risk of corrosion.
- This aim is achieved by a fire tube condensing boiler for generating hot water according to the invention, characterized in that it comprises the characteristics according to the appended claims.
- Further characteristics and advantages of the present invention will become better apparent from the description of a preferred but not exclusive embodiment thereof, illustrated by way of non-limiting example in the accompanying drawings, wherein:
-
FIG. 1 is a longitudinal sectional view of the boiler, in which, as in the figures that follow, the exhaust gas conveyance tubes are not shown in cross-section; -
FIG. 2 is a sectional view, taken along the line II-II ofFIG. 1 ; -
FIGS. 3 and 4 are respectively views of the details shown inFIG. 1 . - With reference to the figures, the
reference numeral 1 generally designates a boiler comprising anouter enclosure 2, which is adapted to delimit a portion ofspace 3 for containing the water to be heated, which is introduced cold by way of an inlet connector 3 a located proximate to the base of the enclosure and exits hot by way of anoutlet connector 3 b that is located proximate to the top of the enclosure. - Moreover, the
reference numeral 4 designates a furnace where the combustion generated by aburner 5 occurs, and thereference numeral 6 designates tubes designed to convey the exhaust gases in output from thefurnace 4 to achamber 7 for accessing a flue along the arrows ofFIG. 1 . - An important feature of the invention is the presence of a thermostatic device, which will be described in detail with reference to
FIG. 4 and is comprised within astub 8 that is interposed between theoutlet connector 3 b and the portion ofspace 3 for containment of the water to be heated. Such device is adapted to let the water flow out through theconnector 3 b only when it reaches a preset value of the temperature that allows the accumulation, around thefurnace 4, of a mass of water that is hot enough to prevent condensation on the wall of said furnace of the water vapor contained in the exhaust gases, thus providing protection of the furnace against the risk of corrosion caused by the formation of condensation. - Circulation of water through the boiler is in any case ensured by the presence of an
external bypass line 9, which is connected at an end 9 a to theoutlet connector 3 b downstream of thestub 8 that comprises the thermostatic device, and at an end 9 b to the portion ofspace 3 that contains the water to be heated in a position that is interposed between the inlet connector 3 a of the cold water and adiaphragm 10 that is located below thefurnace 4 and is spaced from it and is provided withports 10 a, 10 b that are visible inFIG. 3 , so as to appropriately graduate the passage of water through it. - The thermostatic device comprised within the
stub 8 is now described with reference toFIG. 4 . - Such device comprises a
plate 11, which is shown in the figure in the position for opening a port 8 a for the passage of water, which has been moved into such position, overcoming the action of aspring 12, which abuts against a cross-member 8 b that is jointly connected to thestub 8, by the action of a plurality of expanding heat-sensitive elements 13, which are constituted by known wax-based sensors which comprise a cylinder 13 a that contains wax and a piston 13 b, which are arranged in series within atube 14 that is jointly connected to theplate 11 and act in abutment against ablock 15 that is fixed to across-member 16 that is jointly connected to thestub 8. - With this arrangement, a multiplication of the strokes of the individual pistons 13 b is obtained which produces satisfactory values of the stroke of the
plate 11. - The described invention is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims: thus, for example, the thermostatic device can be provided in any manner, and the same applies for the
diaphragm 10. - The disclosures in Italian Patent Application no. MN2008A000010, from which this application claims priority, are incorporated herein by reference.
- Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.
Claims (3)
1-2. (canceled)
3. A fire tube condensing boiler for generating hot water, provided with a structure made of carbon steel which comprises an outer enclosure that is adapted to delimit a portion of space for containing the water to be heated, which is introduced cold by way of an inlet connector located proximate to the base of the enclosure and exits hot by way of an outlet connector located proximate to the top of the enclosure, said portion of space being crossed by tubes for conveyance of the exhaust gases produced by combustion in a furnace located proximate to the top of said portion, further comprising a thermostatic device that is interposed between said outlet connector and the portion of space for containing the water to be heated, which is adapted to let the water flow out when it reaches a preset temperature value, and further comprising a bypass line for conveying water that runs outside the enclosure that delimits the portion of space for containing the water to be heated and is connected at two ends respectively to said outlet connector downstream of the thermostatic device and to said portion of space in a position that is interposed between the inlet connector of the cold water and a perforated diaphragm that is arranged below the furnace and is spaced therefrom.
4. The boiler according to claim 3 , wherein the thermostatic device comprises a plate which is connected to a plurality of heat-sensitive expansion elements arranged in series so as to be able to move said plate away from the position for blocking the port for accessing the hot water outlet connector, overcoming the action of a spring that pushes said plate toward said blocking position.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000010A ITMN20080010A1 (en) | 2008-06-05 | 2008-06-05 | CONDENSATION BOILER WITH SMOKE PIPES FOR THE PRODUCTION OF HOT WATER |
ITMN2008A000010 | 2008-06-05 | ||
PCT/EP2009/055309 WO2009146990A2 (en) | 2008-06-05 | 2009-04-30 | Fire tube condensing boiler for generating hot water |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110073052A1 true US20110073052A1 (en) | 2011-03-31 |
Family
ID=40301915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/995,392 Abandoned US20110073052A1 (en) | 2008-06-05 | 2009-04-30 | Fire tube condensing boiler for generating hot water |
Country Status (8)
Country | Link |
---|---|
US (1) | US20110073052A1 (en) |
EP (1) | EP2307816B1 (en) |
AU (1) | AU2009254070A1 (en) |
CA (1) | CA2726439A1 (en) |
EA (1) | EA019291B1 (en) |
ES (1) | ES2541578T3 (en) |
IT (1) | ITMN20080010A1 (en) |
WO (1) | WO2009146990A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120180996A1 (en) * | 2011-01-19 | 2012-07-19 | Chadwick Energy Services Ltd. | Jacketed firetube system for a process vessel |
CN113648675A (en) * | 2021-10-19 | 2021-11-16 | 东营威联化学有限公司 | Cooling device of xylene rectifying tower |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010054725B4 (en) * | 2010-12-16 | 2015-03-12 | Interdomo Gmbh | Two-circuit heating boiler with integrated condensing technology |
PL2710306T3 (en) * | 2011-05-17 | 2017-12-29 | Aic S.A. | Boiler |
CN104456925A (en) * | 2014-11-06 | 2015-03-25 | 无锡鸿声铝业有限公司 | Heating furnace |
CN104374091A (en) * | 2014-11-06 | 2015-02-25 | 无锡鸿声铝业有限公司 | Intelligent heating furnace |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5881681A (en) * | 1997-01-23 | 1999-03-16 | Aerco International, Inc. | Water heating system |
US6065682A (en) * | 1998-03-31 | 2000-05-23 | Behr Thermot- Tronik Gmbh & Co. | Thermostatic valve |
US20050274328A1 (en) * | 2000-01-10 | 2005-12-15 | Baese David C | Water heater with continuously variable air and fuel input |
US7819090B2 (en) * | 2005-04-18 | 2010-10-26 | Unical Ag S.P.A. | Heat exchange apparatus, particularly fire tube condensing boiler |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATA15791A (en) * | 1991-01-25 | 1993-09-15 | Vaillant Gmbh | WATER HEATER WITH A BURNER |
AT413596B (en) * | 2000-11-08 | 2006-04-15 | Rudolf Dirisamer | EQUIPMENT OF EXHAUST HEAT EXCHANGER FOR TAUPUNKSTICHEREN OPERATION |
JP5164323B2 (en) * | 2005-10-03 | 2013-03-21 | カルソニックカンセイ株式会社 | Thermostat device |
-
2008
- 2008-06-05 IT IT000010A patent/ITMN20080010A1/en unknown
-
2009
- 2009-04-30 WO PCT/EP2009/055309 patent/WO2009146990A2/en active Application Filing
- 2009-04-30 US US12/995,392 patent/US20110073052A1/en not_active Abandoned
- 2009-04-30 CA CA2726439A patent/CA2726439A1/en not_active Abandoned
- 2009-04-30 EP EP09757373.7A patent/EP2307816B1/en active Active
- 2009-04-30 ES ES09757373.7T patent/ES2541578T3/en active Active
- 2009-04-30 EA EA201071406A patent/EA019291B1/en not_active IP Right Cessation
- 2009-04-30 AU AU2009254070A patent/AU2009254070A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5881681A (en) * | 1997-01-23 | 1999-03-16 | Aerco International, Inc. | Water heating system |
US6065682A (en) * | 1998-03-31 | 2000-05-23 | Behr Thermot- Tronik Gmbh & Co. | Thermostatic valve |
US20050274328A1 (en) * | 2000-01-10 | 2005-12-15 | Baese David C | Water heater with continuously variable air and fuel input |
US7819090B2 (en) * | 2005-04-18 | 2010-10-26 | Unical Ag S.P.A. | Heat exchange apparatus, particularly fire tube condensing boiler |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120180996A1 (en) * | 2011-01-19 | 2012-07-19 | Chadwick Energy Services Ltd. | Jacketed firetube system for a process vessel |
CN113648675A (en) * | 2021-10-19 | 2021-11-16 | 东营威联化学有限公司 | Cooling device of xylene rectifying tower |
CN113648675B (en) * | 2021-10-19 | 2022-01-11 | 东营威联化学有限公司 | Cooling device of xylene rectifying tower |
Also Published As
Publication number | Publication date |
---|---|
ES2541578T3 (en) | 2015-07-21 |
EA201071406A1 (en) | 2011-06-30 |
WO2009146990A2 (en) | 2009-12-10 |
EA019291B1 (en) | 2014-02-28 |
CA2726439A1 (en) | 2009-12-10 |
AU2009254070A1 (en) | 2009-12-10 |
WO2009146990A3 (en) | 2010-05-06 |
EP2307816A2 (en) | 2011-04-13 |
EP2307816B1 (en) | 2015-04-01 |
ITMN20080010A1 (en) | 2009-12-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |