US20040079354A1 - Direct gas burner type furnace - Google Patents
Direct gas burner type furnace Download PDFInfo
- Publication number
- US20040079354A1 US20040079354A1 US10/688,658 US68865803A US2004079354A1 US 20040079354 A1 US20040079354 A1 US 20040079354A1 US 68865803 A US68865803 A US 68865803A US 2004079354 A1 US2004079354 A1 US 2004079354A1
- Authority
- US
- United States
- Prior art keywords
- furnace
- combustion
- rate
- gas burner
- gas
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
Definitions
- Circulation fans 11 are provided within the furnace, for making the furnace temperature uniform by circulating the combustion gas in the furnace, and are driven by circulation fan motors 14 provided outside the furnace, respectively.
- the number of the circulation fans 11 is preferably equal to that of the burners.
- a temperature sensor 3 is provided in the furnace for monitoring the furnace temperature variable in accordance with the load variation due to the articles existing within the furnace, and transmitting information related to the furnace temperature to a temperature/output controller 4 .
- Exhaustion rate control means includes the temperature/output controller 4 , a motor rotation controller 10 and an exhaust fan motor 9 for driving the exhaust fan 8 . That is, information (a signal) representing the combustion rate of the gas burner 2 is transmitted from the temperature/output controller 4 to the motor rotation controller 10 which, in turn, controls the exhaust fan motor 9 to regulate the rotational speed of the exhaust fan 8 based on this information. Accordingly, the exhaustion rate of the combustion gas is controllable in accordance with the combustion rates of the gas burner 2 .
Abstract
A direct gas burner type furnaces for directly heating articles 13 by combustion gas and then exhausting the combustion gas outside the furnace, controls the combustion rate of a gas burner 2 based on the furnace temperature detected by a temperature sensor 3 in the furnace, and controls the rotational speed of an exhaust fan 8 based on the combustion rate to control the exhaust rate of the combustion gas in the furnace. Accordingly, it is possible to exhaust the combustion gas from the furnace in correspondence with the introduction rate of the combustion gas into the furnace and to prevent air at a normal temperature from being sucked into the furnace.
Description
- 1. Field of the Invention
- The present invention relates to a direct gas burner type furnace, for heating, capable of controlling an exhaust gas in accordance with the variation of heat load in the furnace.
- 2. Description of the Related Art
- In the prior art furnace adopting a direct gas burner, for heating, which necessitates ventilation within the furnace, such as a dryer furnace for handling dangerous articles, the combustion rate of the gas burner is solely controlled in accordance with the variation of heat load of articles to be heated in the furnace. That is, if it is found that there is no article to be heated in the furnace as a result of the monitoring of the furnace temperature, an amount of gas to be supplied to the burner is automatically throttled to reduce the combustion rate.
- A reason why the direct gas burner is employed is that the article can be effectively heated by using hot combustion gas for the purpose of directly heating the atmosphere within the furnace. However, the combustion gas directly introduced into the furnace must be exhausted from the furnace. It is also necessary to exhaust the furnace atmosphere containing dangerous material such as oil or others evaporated from the heated article after the concentration thereof becomes lower than a threshold value above which there is a risk of explosion.
- In the prior art, even if a rate of the combustion gas introduced into the furnace varies in accordance with the increase/decrease of heat load, i.e., the increase/decrease of the combustion rate, an exhaust rate of a fan for exhausting furnace gas is constant. Thereby, there is a problem in that, when the combustion rate decreases, the interior of the furnace becomes a negative pressure to suck outer air of a normal temperature from an opening of the furnace. Thus, the furnace temperature falls to increase the combustion rate even though the heat supply is unnecessary. In such a manner, in the prior art, there is no exhaust control of the furnace atmosphere due to the load variation, particularly for the purpose of energy-saving when the load decreases.
- The present invention has been made to solve the above mentioned problems, and an object thereof is to provide a direct gas burner type furnace capable of maintaining the furnace temperature at a set temperature while decreasing a heat loss caused by the exhaustion, even if articles to be heated are not continuously introduced into the furnace, and also capable of saving energy as well as reducing an exhaustion amount of CO2.
- The inventive direct gas burner type furnace is adapted to control the combustion rate of combustion means based on a furnace temperature detected by a temperature sensor as well as to control an exhaustion rate of the combustion gas based on the combustion rate. As an amount of the combustion gas corresponding to that of the combustion gas introduced into the furnace is exhausted outside the furnace thereby, air of a normal temperature is not sucked from an opening of a furnace body into the furnace, whereby the furnace temperature does not fall. Accordingly, it is possible to reduce a heat loss due to the exhaust as well as to maintain the furnace at a set temperature, whereby energy saving and a reduction of the exhausted CO2 are achievable.
- The inventive direct gas burner type furnace may be provided with fans for circulating the combustion gas. Thereby, it is possible to make the furnace temperature uniform so that the articles to be heated are evenly heated. Also, it is possible to accurately detect the furnace temperature to optimize the combustion rate and the exhaustion rate.
- The inventive direct gas burner type furnace may comprise a plurality of combustion means. Thereby, it is possible to enlarge and elongate the size of the furnace. Also, it is possible to make it correspond to various situations by separate control of the off-operating combustion means and the on-operating combustion means.
- The present invention may be more fully understood from the description of the preferred embodiments of the invention, as set forth below, together with the accompanying drawings.
- In the drawings:
- FIG. 1 is a schematic front view of an overall construction according to one embodiment of the inventive direct gas burner type furnace; and
- FIG. 2 is a side view of a furnace body of the embodiment of the inventive direct gas burner type furnace.
- One embodiment of the inventive direct gas burner type furnace will be described below with reference to the attached drawings. FIG. 1 is a schematic front view of an overall construction according to one embodiment of the inventive direct gas burner type furnace, and FIG. 2 is a side view thereof.
Articles 13 are continuously supplied by aconveyor device 12, to afurnace body 1 of the direct gas burner type furnace according to the present invention, through anopening 1a provided in the furnace body.Gas burners 2 are attached to thefurnace body 1 as combustion means for heating thearticles 13 and internal structures of the furnace. While threegas burners 2 are provided in FIG. 1, the number of gas burners may be suitably selectable in accordance with the size of thefurnace body 1. -
Circulation fans 11 are provided within the furnace, for making the furnace temperature uniform by circulating the combustion gas in the furnace, and are driven bycirculation fan motors 14 provided outside the furnace, respectively. The number of thecirculation fans 11 is preferably equal to that of the burners. Atemperature sensor 3 is provided in the furnace for monitoring the furnace temperature variable in accordance with the load variation due to the articles existing within the furnace, and transmitting information related to the furnace temperature to a temperature/output controller 4. - Combustion rate control means includes the temperature/output controller4 and a
damper control motor 5 connected to a gas feedingrate control damper 6 for adjusting a feeding rate of gas supplied to thegas burner 2 and to a combustion air feedingrate control damper 7 for adjusting a feeding rate of combustion air supplied to thegas burner 2. Accordingly, a signal representing the furnace temperature detected by thetemperature sensor 3 is input to the temperature/output controller 4 which, in turn, creates a control signal based on the information input thereto and output the same to thedamper control motor 5. Thedamper control motor 5 controls the gasrate control damper 6 and the combustionair control damper 7 based on the control signal. In such a manner, the combustion rate of thegas burner 2 is controlled. - Further, to exhaust the combustion gas introduced into the furnace, an
exhaust duct 15 inserted into the interior of the furnace and connected to anexhaust fan 8 is provided. Exhaustion rate control means includes the temperature/output controller 4, amotor rotation controller 10 and anexhaust fan motor 9 for driving theexhaust fan 8. That is, information (a signal) representing the combustion rate of thegas burner 2 is transmitted from the temperature/output controller 4 to themotor rotation controller 10 which, in turn, controls theexhaust fan motor 9 to regulate the rotational speed of theexhaust fan 8 based on this information. Accordingly, the exhaustion rate of the combustion gas is controllable in accordance with the combustion rates of thegas burner 2. - In this regard, in FIG. 1, front and
rear chambers furnace body 1 are suitably used in accordance with uses of the direct gas burner type furnace. For example, when the direct gas burner type furnace is used as a drier for drying coated articles, thefront chamber 16 may be used as a coating chamber and therear chamber 17 may be used as a cooling chamber. Or, both the front and rear chambers may be used as a preheating chamber and a cooling chambers, respectively, or as atmosphere-shutter chambers. - As described above, in the present invention, only the
motor rotation controller 10 is newly provided for controlling theexhaust fan motor 9 and, by using the signal from the originally provided temperature/output controller 4, the exhaustion rate of theexhaust fan 8 is controlled to regulate the exhaustion rate of thegas burner 2 in correspondence to the combustion rate of the gas burner, that is, the rate of the combustion gas introduced into the furnace. - Accordingly, in the present invention, it is possible to automatically control the exhaust rate of the combustion gas in conformity with the combustion rate of the gas burner; i.e., the rate of the combustion gas introduced into the furnace; and in accordance with the variation of heat load due to the article to be heated in the furnace. Thereby, it is possible to suppress the unnecessary introduction of air due to an excessive exhaust in the prior art when the combustion rate is reduced, and to save energy as well as reduce the CO2 exhaust rate.
- While the invention has been described by reference to specific embodiments chosen for the purpose of illustration, it should be apparent that numerous modification could be made thereto by those skilled in the art without departing from the basic concept and scope of the invention.
Claims (4)
1. A direct gas burner type furnace for directly heating articles continuously fed into the furnace by combustion gas which gas is then exhausted outside the furnace thereafter, comprising
combustion means opening to the interior of the furnace,
a temperature sensor for detecting the furnace temperature,
exhaust fans for discharging the combustion gas from the interior of the furnace to outside the furnace,
combustion rate control means for controlling a combustion rate of the combustion means based on the furnace temperature detected by the temperature sensor, and
exhaust rate control means for controlling an exhaust rate of the combustion gas in the furnace by controlling the exhaust fans based on the combustion rate.
2. A direct gas burner type furnace as defined by claim 1 , wherein a circulation fan is provided in the furnace for circulating the combustion gas in the furnace.
3. A direct gas burner type furnace as defined by claim 1 , wherein a plurality of said combustion means are provided.
4. A direct gas burner type furnace as defined by claim 2 , wherein a plurality of said combustion means are provided.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002311036A JP2004144421A (en) | 2002-10-25 | 2002-10-25 | Direct fire gas burner furnace |
JP2002-311036 | 2002-10-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040079354A1 true US20040079354A1 (en) | 2004-04-29 |
Family
ID=32105303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/688,658 Abandoned US20040079354A1 (en) | 2002-10-25 | 2003-10-17 | Direct gas burner type furnace |
Country Status (2)
Country | Link |
---|---|
US (1) | US20040079354A1 (en) |
JP (1) | JP2004144421A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007130257A2 (en) * | 2006-05-04 | 2007-11-15 | Abbott Cardiovascular Systems Inc. | Methods and devices for coating stent |
US20080104859A1 (en) * | 2006-10-12 | 2008-05-08 | Bryan Wolowiecki | Method and apparatus for inhibiting pitch formation in the wet seal exhaust duct of a veneer dryer |
US20080311280A1 (en) * | 2007-06-15 | 2008-12-18 | David Rego | Methods and devices for coating stents |
US20100215436A1 (en) * | 2007-07-17 | 2010-08-26 | William Nevil Heaton Johnson | Flood barrier or the like |
US8003157B2 (en) | 2007-06-15 | 2011-08-23 | Abbott Cardiovascular Systems Inc. | System and method for coating a stent |
US8304012B2 (en) | 2006-05-04 | 2012-11-06 | Advanced Cardiovascular Systems, Inc. | Method for drying a stent |
US8545214B2 (en) | 2008-05-27 | 2013-10-01 | Honeywell International Inc. | Combustion blower control for modulating furnace |
US8667703B2 (en) | 2007-02-09 | 2014-03-11 | Usnr/Kockums Cancar Company | Method and apparatus for controlling cooling temperature and pressure in wood veneer jet dryers |
US8764435B2 (en) | 2008-07-10 | 2014-07-01 | Honeywell International Inc. | Burner firing rate determination for modulating furnace |
US8876524B2 (en) | 2012-03-02 | 2014-11-04 | Honeywell International Inc. | Furnace with modulating firing rate adaptation |
CN104154767A (en) * | 2014-08-11 | 2014-11-19 | 湖北大别山窑炉产业研究设计院有限公司 | Temperature measurement and control system for plate-type SCR denitration catalyst calcining furnace |
WO2017080067A1 (en) * | 2015-11-13 | 2017-05-18 | 太仓权阡机械自动化有限公司 | Paper tube drying device |
CN106839719A (en) * | 2017-02-23 | 2017-06-13 | 包头市海罗水泥制品机械有限公司 | One kind automation tunnel drying system |
CN108955105A (en) * | 2017-05-17 | 2018-12-07 | 巨石集团有限公司 | A kind of waste heat recovering energy conserving baking oven and exhaust heat recovering method |
CN109708477A (en) * | 2018-12-27 | 2019-05-03 | 西南铝业(集团)有限责任公司 | A kind of method, apparatus, equipment and storage medium improving kiln temperature uniformity |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4583256B2 (en) * | 2005-06-23 | 2010-11-17 | 株式会社神戸製鋼所 | Heat treatment furnace |
CN106017035B (en) * | 2016-07-11 | 2018-06-12 | 天津金戈科技发展有限责任公司 | A kind of three-layer network belt drying machine for montmorillonite processing |
CN110186269A (en) * | 2019-06-10 | 2019-08-30 | 江苏明德玩具股份有限公司 | Automatic drier is used in a kind of processing of educational toy |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4608961A (en) * | 1984-04-30 | 1986-09-02 | Lanham Machinery Company, Inc. | Exhaust damper control |
US4941819A (en) * | 1986-12-01 | 1990-07-17 | Stewart Systems, Inc. | Air circulation and exhaust control system for commercial ovens |
-
2002
- 2002-10-25 JP JP2002311036A patent/JP2004144421A/en active Pending
-
2003
- 2003-10-17 US US10/688,658 patent/US20040079354A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4608961A (en) * | 1984-04-30 | 1986-09-02 | Lanham Machinery Company, Inc. | Exhaust damper control |
US4941819A (en) * | 1986-12-01 | 1990-07-17 | Stewart Systems, Inc. | Air circulation and exhaust control system for commercial ovens |
US4941819B1 (en) * | 1986-12-01 | 1995-08-15 | Stewart Systems Inc | Air circulation and exhaust control system for commercial ovens |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8927050B2 (en) | 2006-05-04 | 2015-01-06 | Abbott Cardiovascular Systems Inc. | Method and apparatus for coating a stent |
US8637110B2 (en) | 2006-05-04 | 2014-01-28 | Advanced Cardiovascular Systems, Inc. | Rotatable support elements for stents |
US8430057B2 (en) | 2006-05-04 | 2013-04-30 | Advanced Cardiovascular Systems, Inc. | Stent support devices |
US8596215B2 (en) | 2006-05-04 | 2013-12-03 | Advanced Cardiovascular Systems, Inc. | Rotatable support elements for stents |
WO2007130257A3 (en) * | 2006-05-04 | 2008-04-03 | Abbott Cardiovascular Systems | Methods and devices for coating stent |
WO2007130257A2 (en) * | 2006-05-04 | 2007-11-15 | Abbott Cardiovascular Systems Inc. | Methods and devices for coating stent |
US8003156B2 (en) | 2006-05-04 | 2011-08-23 | Advanced Cardiovascular Systems, Inc. | Rotatable support elements for stents |
US8465789B2 (en) | 2006-05-04 | 2013-06-18 | Advanced Cardiovascular Systems, Inc. | Rotatable support elements for stents |
US8741379B2 (en) | 2006-05-04 | 2014-06-03 | Advanced Cardiovascular Systems, Inc. | Rotatable support elements for stents |
US8304012B2 (en) | 2006-05-04 | 2012-11-06 | Advanced Cardiovascular Systems, Inc. | Method for drying a stent |
US8069814B2 (en) | 2006-05-04 | 2011-12-06 | Advanced Cardiovascular Systems, Inc. | Stent support devices |
US8046932B2 (en) * | 2006-10-12 | 2011-11-01 | Usnr/Kockums Cancar Company | Method and apparatus for inhibiting pitch formation in the wet seal exhaust duct of a veneer dryer |
US8381414B2 (en) | 2006-10-12 | 2013-02-26 | Usnr/Kockums Cancar Company | Method and apparatus for inhibiting pitch formation in the wet seal exhaust duct of a veneer dryer |
US20080104859A1 (en) * | 2006-10-12 | 2008-05-08 | Bryan Wolowiecki | Method and apparatus for inhibiting pitch formation in the wet seal exhaust duct of a veneer dryer |
US9228780B2 (en) | 2007-02-09 | 2016-01-05 | Usnr, Llc | Method and apparatus for controlling cooling temperature and pressure in wood veneer jet dryers |
US8667703B2 (en) | 2007-02-09 | 2014-03-11 | Usnr/Kockums Cancar Company | Method and apparatus for controlling cooling temperature and pressure in wood veneer jet dryers |
US9797655B2 (en) | 2007-02-09 | 2017-10-24 | Usnr, Llc | Method and apparatus for controlling cooling temperature and pressure in wood veneer jet dryers |
US7897195B2 (en) | 2007-06-15 | 2011-03-01 | Abbott Cardiovascular Systems Inc. | Devices for coating stents |
US8003157B2 (en) | 2007-06-15 | 2011-08-23 | Abbott Cardiovascular Systems Inc. | System and method for coating a stent |
US8691320B2 (en) | 2007-06-15 | 2014-04-08 | Abbott Cardiovascular Systems Inc. | Method for coating stents |
US20110217450A1 (en) * | 2007-06-15 | 2011-09-08 | Bryan Russell Hemphill | Method for Coating Stents |
US20080311280A1 (en) * | 2007-06-15 | 2008-12-18 | David Rego | Methods and devices for coating stents |
US20100215436A1 (en) * | 2007-07-17 | 2010-08-26 | William Nevil Heaton Johnson | Flood barrier or the like |
US8545214B2 (en) | 2008-05-27 | 2013-10-01 | Honeywell International Inc. | Combustion blower control for modulating furnace |
US10094593B2 (en) | 2008-05-27 | 2018-10-09 | Honeywell International Inc. | Combustion blower control for modulating furnace |
US8764435B2 (en) | 2008-07-10 | 2014-07-01 | Honeywell International Inc. | Burner firing rate determination for modulating furnace |
US8876524B2 (en) | 2012-03-02 | 2014-11-04 | Honeywell International Inc. | Furnace with modulating firing rate adaptation |
US9453648B2 (en) | 2012-03-02 | 2016-09-27 | Honeywell International Inc. | Furnace with modulating firing rate adaptation |
CN104154767A (en) * | 2014-08-11 | 2014-11-19 | 湖北大别山窑炉产业研究设计院有限公司 | Temperature measurement and control system for plate-type SCR denitration catalyst calcining furnace |
WO2017080067A1 (en) * | 2015-11-13 | 2017-05-18 | 太仓权阡机械自动化有限公司 | Paper tube drying device |
CN106839719A (en) * | 2017-02-23 | 2017-06-13 | 包头市海罗水泥制品机械有限公司 | One kind automation tunnel drying system |
CN108955105A (en) * | 2017-05-17 | 2018-12-07 | 巨石集团有限公司 | A kind of waste heat recovering energy conserving baking oven and exhaust heat recovering method |
CN109708477A (en) * | 2018-12-27 | 2019-05-03 | 西南铝业(集团)有限责任公司 | A kind of method, apparatus, equipment and storage medium improving kiln temperature uniformity |
Also Published As
Publication number | Publication date |
---|---|
JP2004144421A (en) | 2004-05-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DENSO CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TAKEDA, TAKANORI;REEL/FRAME:014628/0052 Effective date: 20031006 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |