CN101566386B - Porous-medium gas hot water heater - Google Patents
Porous-medium gas hot water heater Download PDFInfo
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- CN101566386B CN101566386B CN200910068151XA CN200910068151A CN101566386B CN 101566386 B CN101566386 B CN 101566386B CN 200910068151X A CN200910068151X A CN 200910068151XA CN 200910068151 A CN200910068151 A CN 200910068151A CN 101566386 B CN101566386 B CN 101566386B
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Abstract
The invention discloses a porous-medium gas hot water heater, relating to a heater in which a pipe is wound into a spiral form to separate the continuous flows of water and a heating medium; the heater is structurally characterized in that: fine-pore porous medium materials are filled in an anti-backfire channel and a groove of a water cooling sleeve; macropore porous medium materials, which are metal fibers or foamed ceramics, are filled in a combustion chamber; heat exchanging tubes exchange heat directly with the macropore porous medium materials in the combustion chamber to conduct radiation or or heat exchange with the form of heat conduction, and high temperature fume realizes strong heat exchange between the peripheral dense heat exchanging tubes and the macropore porous-medium materials and leads the fume to be cooled rapidly and steam to condense directly on the tube walls; therefore, the heat conduction of the combustion chamber is strengthened and the heat released by the combustion can be rapidly and effectively transferred to water so that the steam in the fume condenses to recycle the condensation heat of water, thus realizing the goal of ultimately absorbing the heatreleased by the combustion. The hot water heater has simple structure and heat efficiency of over 96 percent, meeting the Grade-I energy efficiency standard for household rapid water heaters.
Description
Technical field
Technical scheme of the present invention relates to the heater that divides the continuous-flow of boiling water and heat medium with the pipe of spirally-wound, specifically porous-medium gas hot water heater.
Background technology
Along with the aggravation of energy and environment crisis, all have higher requirement to energy efficiency and environmental contaminants discharging in countries in the world.Energy-saving and emission-reduction are a vital task of China's Eleventh Five-Year Plan proposition especially.It is 84% that the hot gas heater efficiency standard of carrying out at present requires minimum.In order to improve the efficient of gas heater; Prior art nearly all adopts the method that increases heat exchanger area; Promptly, perhaps make exhaust gas temperature be lower than 100 ℃, so that reclaim the latent heat of steam in the flue gas through the mode that increases the flue gas condensing heat-transfer surface through adopting the form of finned tube.Adopt traditional combustion system, finned tube need be avoided away from flame burning out, and this makes that the burner volume is bigger.Add the big and complex structure of gas heater volume of condenser.
CN1570505 discloses a kind of porous ceramics gas heater, though it has adopted multi-hole medium combustion technology and overheavy firing of porous ceramics heat transfer technology and heat exchange, the layout of its heat exchanger tube is still according to the sparse layout of general gas heater heat exchanger tube; Not the water recovery in the flue gas; Exhaust gas temperature is still higher, so heat transfer intensity is still not enough in the combustion chamber, this water heater thermal efficiency is not high enough; Be merely 85%～90%, with the efficiency grade be that the water heater of I level still has gap.
Summary of the invention
Technical problem to be solved by this invention is: a kind of porous-medium gas hot water heater is provided; Filling porous medium in the combustion chamber; Heat exchanger tube directly and in the combustion chamber high temperature porous media carry out the heat exchange of radiation and heat conduction form; And high-temperature flue gas is realized strong heat exchange in its peripheral intensive heat exchanger tube and the helical duct between the porous media; Make the flue gas chilling and water vapour is directly condensed at tube wall, thereby overcome the big and complex structure of existing gas heater volume, and combustion chamber internal combustion intensity and the not enough shortcoming of heat transfer intensity.
The present invention solves this technical problem the technical scheme that is adopted: porous-medium gas hot water heater; By air and flue system, water system, igniter, anti-backfire structure, coagulate water discharge structure, insulation material and outer sleeve and constitute; Wherein, Air and flue system is made up of gas nozzle, injector, premixer, anti-backfire passage, the combustion chamber, air-introduced machine and the smoke discharge tube road that are surrounded by spiral heat exchange tube and middle cooling tube, and water system is made up of cold water inlet tube, water-cooled sleeve, middle cooling tube, high temperature resistant flexible pipe, spiral heat exchange tube, hot water fairlead, and the anti-backfire structure constitutes by reeded water-cooled sleeve and anti-backfire passage are set; Coagulating the water discharge structure constitutes by coagulating the water catch tray and coagulating the water fairlead; The outer sleeve bottom is provided with the flue socket, has air-vent on the top of its respective combustion chamber, and its underpart has screwed hole; Above-mentioned building block is to connect like this: gas nozzle is installed in the inlet of injector, and injector is connected in the premixer, and the water-cooled sleeve compresses with premixer's welding or bolt and is connected; The anti-backfire passage that communicates is up and down left in the water-cooled sleeve centre that is provided with groove, in the anti-backfire passage, is filled with the fine pore porous media material, in the groove of water-cooled sleeve, is filled with the fine pore porous media material; Insert spiral heat exchange tube then, the delivery port of water-cooled sleeve is connected with middle cooling tube, and the space that spiral heat exchange tube and middle cooling tube surround promptly constitutes the combustion chamber; In the combustion chamber, be filled with the macrovoid porous media material, between fine pore porous media material and macrovoid porous media material, leave the space, and the igniter electrode is set at this; Cold water inlet tube and middle cooling tube are connected on the water-cooled sleeve, are connected by high temperature resistant flexible pipe between middle cooling tube and the double helix heat exchanger tube, and spiral heat exchange tube is by the support ring card jail of its bottom outside on the sleeve; Support ring is connected through screwed hole by screw with outer sleeve, and 1/3 place, top of spiral heat exchange tube has reserved small gaps, and closely settles in the bottom; Outer sleeve is housed outside spiral heat exchange tube, fill insulant material between spiral heat exchange tube and outer sleeve, but be not all to fill up; 1/3 height is left a blank on top, has air-vent on the corresponding outer sleeve, and the outer sleeve bottom connects the flue socket by screw through screwed hole; Air-introduced machine directly is placed on the flue socket, and the air-introduced machine outlet connects the smoke discharge tube road, leans on spiral water catch tray that coagulates of ligament place device of water heater bottom position at spiral heat exchange tube; Connect one at the lowest part that coagulates the water catch tray and coagulate the water fairlead; Spiral heat exchange tube also is connected with the hot water fairlead, except that specializing, and the connection between the above-mentioned parts of mentioning; Being general method of attachment, is known.
In the above-mentioned porous-medium gas hot water heater, the width in the cylindrical shell that spiral heat exchange tube surrounds is 40～250mm, and length is 50～400mm, highly is 150～300mm; The diameter dimension of anti-backfire passage is 10～20mm, is arranged as 1～6 row, and the center distance of anti-backfire passage is 20～40mm; The width of water heater main body is 100～300mm, and length is 100～460mm, highly is 200～500mm.
In the above-mentioned porous-medium gas hot water heater, spiral heat exchange tube is single tube, two-tube or three pipe winding escalators.
In the above-mentioned porous-medium gas hot water heater, gas nozzle is single import, double feed inlet or 3～6 import forms.
In the above-mentioned porous-medium gas hot water heater, the cross section of premixer, water-cooled sleeve, spiral heat exchange tube and outer sleeve is Long Circle, circle, square or oval.
In the above-mentioned porous-medium gas hot water heater, the air-vent that has on the top of its respective combustion chamber on the outer sleeve is that arrange in the wide slit or 3～7 of 3～7 rows, 4～16 1～2mm of every row, the aperture of 5～40 1～2mm diameters of every row.
In the above-mentioned porous-medium gas hot water heater, the size in the space of between fine pore porous media material and macrovoid porous media material, reserving is 4～6mm.
In the above-mentioned porous-medium gas hot water heater, leaving the anti-backfire passage that communicates up and down in the middle of the water-cooled sleeve is 1～42.
In the above-mentioned porous-medium gas hot water heater, the width of the small gaps that 1/3 place, top of spiral heat exchange tube reserves is 0.2～0.5mm.
In the above-mentioned porous-medium gas hot water heater; The fine pore porous media material of in the groove of anti-backfire passage and water-cooled sleeve, filling is that void density is the fine pore porous media material of 40～65PPI; The macrovoid porous media material of in the combustion chamber, filling is that void density is that every layer thickness of 10～30PPI is that the gross thickness of 5～25mm is the porous media material of 150～300mm; Used porous media material is metallic fiber material or foam ceramic material; Its porosity reaches more than 80%, and withstand high temperatures reaches more than 1000 ℃.
In the above-mentioned porous-medium gas hot water heater, used high temperature resistant flexible pipe is meant the high temperature flexible pipe that can tolerate more than 200 ℃, and the high temperature resistant flexible pipe of glass fiber hose, aluminium combined high temperature flexible pipe and other materials is arranged, and all can obtain through commercially available; Used insulation material is the fire-retardant heat insulation material that can tolerate more than 200 ℃, and the fire-retardant heat insulation material of aluminosilicate fiber cotton, mineral wool, rock wool and other materials is arranged, and all can obtain through commercially available; Position with the igniter electrode that provides in the accompanying drawing 1 of present embodiment is the igniter in the actual installation.
The invention has the beneficial effects as follows: the present invention adopts the multi-hole medium combustion mode, to reduce the combustion space and to strengthen combustion intensity and heat transfer intensity.One of characteristic of the present invention is the indoor heat transfer of overheavy firing in the combustion chamber, makes the burning thermal discharge transmit feedwater rapidly and efficiently, makes water recovery and the heat of condensation of recycle-water in the flue gas, thereby realizes the burn purpose of heat release of limit absorption.Its method is exactly a filling porous medium in the combustion chamber; Heat exchanger tube directly and in the combustion chamber high temperature porous media carry out the heat exchange of radiation and heat conduction form; And high-temperature flue gas is realized strong heat exchange in its peripheral intensive heat exchanger tube and the helical duct between the porous media, makes the flue gas chilling and water vapour is directly condensed at tube wall.Secondly, the porous media material of processing by metallic fiber of in porous-medium gas hot water heater of the present invention, filling, its heat conductivility and mechanical strength are better, help the passback of heat.This water heater structure has been strengthened the heat exchange of flue gas and water, the combustion chamber smoke temperature is reduced greatly, and can collect the latent heat of water vapour in the flue gas, improves the thermal efficiency, in a simple structure, has realized strengthening the target of burning and recycle-water steam latent heat.This water heater the simple in structure and thermal efficiency can reach more than 96% reaches domestic gas instantaneous water heater efficiency grade I grade standard.
Compare with existing CN1570505 porous ceramics gas heater, porous-medium gas hot water heater of the present invention has solved following problem: the first, and igniting is the problem of difficulty relatively.When in existing porous media, lighting a fire, electric spark wall heat absorption all around is very strong, and for this reason, the present invention reserves the space of 4～6mm when ignition location is arranged porous media, to reduce the cooling effect of wall to electric spark; The second, the problem of tempering takes place easily.Because porous media is present in the combustion space, solid conductive heat and radiation effects make a large amount of heat passed upstream, cause tempering easily.For this reason; The present invention leaves the anti-backfire passage that several communicate up and down in the middle of being employed in the water-cooled sleeve; In the anti-backfire passage, fill the porous media material of fine pore, and adopt and reduce upper reaches hole and use water-cooled way, avoid the generation of tempering effectively at channel outer wall; The 3rd, the problem of burning overtemperature.Porous media solid conductive heat and radiation effects are to the preheating of premixed gas; Make ignition temperature high than the traditional combustion temperature; Too high and the problem that the ablation of porous media and NO are generated that produces of ignition temperature in the combustion chamber, the present invention has adopted the way of strengthening cooling and disperseing to burn.Promptly in the porous media center arrangement cooling tube; Outside the combustion chamber, arrange intensive spiral heat exchange tube; A burning required air part is progressed into the combustion chamber and combustion process is disperseed by peripheral slit, combustion chamber; In the zone of combustion chamber nearly 1/3, accomplish burning gradually, these measures are controlled in the suitable scope chamber temperature; The 4th, the problem that flowing resistance is big.Because porous media is filled in whole gas channel, flowing resistance is big, and general blower fan is difficult to meet the demands, and the present invention adopts the mode of air-introduced machine and injector combination to carry out ventilation smoke exhaust.In addition, helix tube is set to two-tube winding escalator or three pipe winding escalators, has reduced resistance to water-flow.
In a word, compare with the structure of CN1570505 porous ceramics gas heater, porous-medium gas hot water heater structure of the present invention has not only overcome the former above-mentioned shortcoming; And outstanding more characteristics are that the heat exchanger tube of the peripheral disposition in the combustion chamber is closely; On the outer wall of combustion chamber, just on the wall of heat exchanger tube, the water vapour in the flue gas condenses in a large number like this; Thereby the heat of condensation that can recycle-water steam makes the water heater thermal efficiency to reach more than 96%.
Porous-medium gas hot water heater structure of the present invention guarantees that flameholding, chamber temperature are evenly distributed, and have both reduced NO
xGeneration also guaranteed the generation of imperfect combustion products such as CO, energy-conservationly all reached very high requirement with environmental protection.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the axial section sketch map of porous-medium gas hot water heater of the present invention.
Fig. 2 is the radial section sketch map at the said embodiment of porous-medium gas hot water heater Fig. 1 of the present invention A-A place in the position.
Fig. 3 is the axial section sketch map of the water-cooled sleeve of porous-medium gas hot water heater of the present invention.
Fig. 4 is the axial section sketch map of the outer sleeve of porous-medium gas hot water heater of the present invention.
Among the figure, 1. gas nozzle, 2. injector, 3. premixer, 4. water-cooled sleeve; 5. fine pore porous media material, 6. spiral heat exchange tube, 7. insulation material, 8. in the middle of cooling tube, 9. support ring; 10. outer sleeve, 11. high temperature resistant flexible pipes, 12. coagulate the water catch tray, 13. air-introduced machines, 14. coagulate the water fairlead; 15. the macrovoid porous media material, 16. igniter electrodes, 17. cold water inlet tubes, 18. anti-backfire passages, 19. hot water fairleads; 20. the flue tube socket, 21. smoke discharge tube roads, the groove that is provided with on a. water-cooled sleeve, the air-vent of opening on the b. outer sleeve, c. screwed hole.
The specific embodiment
Accompanying drawing shows; Porous-medium gas hot water heater of the present invention by air and flue system, water system, igniter, anti-backfire structure, coagulate water discharge structure, insulation material and outer sleeve and constitute; Wherein, Air and flue system is made up of gas nozzle 1, injector 2, premixer 3, anti-backfire passage 18, the combustion chamber, air-introduced machine 13 and the smoke discharge tube road 21 that are surrounded by spiral heat exchange tube 6 and middle cooling tube 8; Water system is made up of cold water inlet tube 17, water-cooled sleeve 4, middle cooling tube 8, high temperature resistant flexible pipe 11, spiral heat exchange tube 6, hot water fairlead 19; The anti-backfire structure is made up of water-cooled sleeve that is provided with groove a 4 and anti-backfire passage 18, coagulates the water discharge structure and constitutes by coagulating water catch tray 12 and coagulating water fairlead 14; Outer sleeve 10 bottoms are provided with flue socket 20, have air-vent b on the top of its respective combustion chamber on the outer sleeve, and its underpart has screwed hole c.
In the embodiment shown in fig. 1, double feed inlet gas nozzle 1 is installed in the inlet of injector 2, and injector 2 is connected in the premixer 3; Water-cooled sleeve 4 compresses with premixer's 3 welding or bolt and is connected, and the anti-backfire passage 18 that communicates is up and down left in water-cooled sleeve 4 centres that are provided with groove a, in anti-backfire passage 18, is filled with fine pore porous media material 5; In the groove of water-cooled sleeve 4, be filled with fine pore porous media material 5; Insert double helix heat exchanger tube 6 then, the delivery port of water-cooled sleeve 4 is connected with middle cooling tube 8, and double helix heat exchanger tube 6 promptly constitutes the combustion chamber with the space that middle cooling tube 8 surrounds; In the combustion chamber, be filled with macrovoid porous media material 15; Between fine pore porous media material 5 and macrovoid porous media material 15, leave the space, and at this igniter electrode 16 is set, cold water inlet tube 17 is connected on the water-cooled sleeve 4 with middle cooling tube 8; Connect by high temperature resistant flexible pipe 11 between middle cooling tube 8 and the double helix heat exchanger tube 6; Outside on the sleeve 10, support ring 9 is connected through screwed hole c by screw with outer sleeve 10 double helix heat exchanger tube 6 by the support ring 9 card jails of its bottom, and 1/3 place, top of double helix heat exchanger tube 6 has reserved small gaps; And closely settle in the bottom
Fig. 1 shows that the height of the utility model porous-medium gas hot water heater main body is 200～500mm.
Fig. 1 shows that the utility model porous-medium gas hot water heater adopts inversion type, and the mobile of medium is such during its work: flue gas from top to bottom flows; Water in the spiral heat exchange tube then from bottom to top is counter-current flow with flue gas; The air-vent of leaving on the corresponding outer sleeve 10 can penetrate into the combustion chamber air from these apertures; The burning required air is divided into primary air and auxiliary air two parts; Primary air is got into by the inlet space of gas nozzle 1 and injector 2; The slit that auxiliary air is reserved by 6 of double helix heat exchanger tubes gets into; Air relies on air-introduced machine 13 and the negative pressure that injector 2 produces to be drawn in the combustion chamber, and combustion gas and air fully mix in injector 2 and premixer 3; The mobile stroke of water is: cold water inlet tube 17 → water-cooled sleeve 4 → middle cooling tube 8 → high temperature resistant flexible pipe 11 → double helix heat exchanger tube 6 → hot water fairlead 19; Connect one at the lowest part that coagulates water catch tray 12 and coagulate water fairlead 14, discharge condensed water.
The middle cooling tube 8 that Fig. 2 is presented at the said embodiment of Fig. 1 is arranged in the middle part of water heater; 12 anti-backfire passages 18 that are arranged to 2 rows are evenly distributed in the water-cooled sleeve 4; The outlet of double helix heat exchanger tube 6 is connected with hot water fairlead 19, and igniter electrode 16 is arranged in hot water fairlead 19 next doors.
Fig. 2 shows that the width of the utility model porous-medium gas hot water heater main body is 100～300mm, and length is 100～460mm.
The water-cooled sleeve 4 that Fig. 3 is presented at the said embodiment of Fig. 1 is provided with groove (a), leaves the anti-backfire passage 18 that communicates up and down in the middle of the water-cooled sleeve 4.
The top, front that Fig. 4 is presented at the outer sleeve 10 of the said embodiment of Fig. 1 has 7 rows, 3 slit b of every row, and the top, left and right side respectively has 7 rows, 1 slit b of every row, and the below, front has 6 screwed hole c that connect support ring 9 and flue socket 20.In fact, the back of outer sleeve 10 top also has 3 of 7 rows', every row slit, and the below, back also has 6 screwed hole c that connect support rings 9 and flue socket 20.
Embodiment 1
The structure of present embodiment and shape are seen Fig. 1～4.
In the porous-medium gas hot water heater of present embodiment, the width in the cylindrical shell that spiral heat exchange tube 6 surrounds is 150mm, and length is 225mm, highly is 225mm; The diameter dimension of anti-backfire passage 18 is 15mm, is arranged as 2 rows, and the center distance of anti-backfire passage 18 is 30mm; The width of water heater main body is 150mm; Length is 280mm; Highly be 350mm; Spiral heat exchange tube 6 is two-tube winding escalator, and gas nozzle 1 is the double feed inlet form, and the cross section of premixer 3, water-cooled sleeve 4, spiral heat exchange tube 6 and outer sleeve 10 is a Long Circle; The air-vent that has on the top of its respective combustion chamber on the outer sleeve 10 is 7 rows, every row totally 8 slits that 1mm is wide; The size in the space of between fine pore porous media material 5 and macrovoid porous media material 15, reserving is 5mm, and the anti-backfire passage that communicates up and down 18 that leaves in the middle of the water-cooled sleeve 4 is 12, and the width of the small gaps that 1/3 place, top of spiral heat exchange tube 6 reserves is 0.3mm; The fine pore porous media material 5 of filler opening is that void density is the fine pore porous media material of 55PPI in the groove of anti-backfire passage 18 and water-cooled sleeve 4, and the macrovoid porous media material 15 of in the combustion chamber, filling is that void density is that every layer thickness of 20PPI is that the gross thickness of 15mm is the porous media material of 170mm.Used porous media material all is metallic fiber materials, and its porosity reaches more than 80%, and withstand high temperatures reaches more than 1000 ℃.
Embodiment 2
Except that following part, other are all identical with embodiment 1.
In the porous-medium gas hot water heater of present embodiment, the width in the cylindrical shell that spiral heat exchange tube 6 surrounds is 40mm, and length is 50mm, highly is 150mm; The diameter dimension of anti-backfire passage 18 is 10mm, is arranged as 1 row, and the center distance of anti-backfire passage 18 is 20mm; The width of water heater main body is 100mm; Length is 100mm; Highly be 200mm; Spiral heat exchange tube 6 is the single tube winding escalator, and gas nozzle 1 is single import form, and the cross section of premixer 3, water-cooled sleeve 4, spiral heat exchange tube 6 and outer sleeve 10 is circular; The air-vent that has on the top of its respective combustion chamber on the outer sleeve 10 is 3 rows, 4 wide slits of 1mm of every row; The size in the space of between fine pore porous media material 5 and macrovoid porous media material 15, reserving is 4mm, and the anti-backfire passage that communicates up and down 18 that leaves in the middle of the water-cooled sleeve 4 is 1, and the width of the small gaps that 1/3 place, top of spiral heat exchange tube 6 reserves is 0.2mm; The fine pore porous media material 5 of filler opening is that void density is the fine pore porous media material of 40PPI in the groove of anti-backfire passage 18 and water-cooled sleeve 4, and the macrovoid porous media material 15 of in the combustion chamber, filling is that void density is that every layer thickness of 10PPI is that the gross thickness of 5mm is the porous media material of 150mm.Used porous media material all is metallic fiber materials, and its porosity reaches more than 80%, and withstand high temperatures reaches more than 1000 ℃.
Embodiment 3
Except that following part, other are all identical with embodiment 1.
In the porous-medium gas hot water heater of present embodiment, the width in the cylindrical shell that spiral heat exchange tube 6 surrounds is 250mm, and length is 400mm, highly is 300mm; The diameter dimension of anti-backfire passage 18 is 20mm, is arranged as 6 rows, and the center distance of anti-backfire passage 18 is 40mm; The width of water heater main body is 300mm; Length is 460mm; Highly be 500mm; Spiral heat exchange tube 6 is three pipe winding escalators, and gas nozzle 1 is 6 import forms, and the cross section of premixer 3, water-cooled sleeve 4, spiral heat exchange tube 6 and outer sleeve 10 is oval; The air-vent that has on the top of its respective combustion chamber on the outer sleeve 10 is 5 rows, 16 wide slits of 2mm of every row; The size in the space of between fine pore porous media material 5 and macrovoid porous media material 15, reserving is 6mm, and the anti-backfire passage that communicates up and down 18 that leaves in the middle of the water-cooled sleeve 4 is 42, and the width of the small gaps that 1/3 place, top of spiral heat exchange tube 6 reserves is 0.5mm; The fine pore porous media material 5 of filler opening is that void density is the fine pore porous media material of 65PPI in the groove of anti-backfire passage 18 and water-cooled sleeve 4, and the macrovoid porous media material 15 of in the combustion chamber, filling is that void density is that every layer thickness of 30PPI is that the gross thickness of 25mm is the porous media material of 200mm.Used porous media material all is foam ceramic materials, and its porosity reaches more than 80%, and withstand high temperatures reaches more than 1000 ℃.
Except that following part, other are all identical with embodiment 1.
In the above-mentioned porous-medium gas hot water heater; Gas nozzle 1 is 3 import forms; The cross section of premixer 3, water-cooled sleeve 4, spiral heat exchange tube 6 and outer sleeve 4 is square, and the air-vent that has on the top of its respective combustion chamber on the outer sleeve 4 is the aperture of 20 1mm diameters of the 4 every rows of row.
Embodiment 5
Except that following part, other are all identical with embodiment 2.
In the above-mentioned porous-medium gas hot water heater, the air-vent that has on the top of its respective combustion chamber on the outer sleeve 4 is the aperture of 3 rows, 5 1mm diameters of every row.
Except that following part, other are all identical with embodiment 3.
In the above-mentioned porous-medium gas hot water heater, the air-vent that has on the top of its respective combustion chamber on the outer sleeve 4 is the aperture of 7 rows, 40 2mm diameters of every row.
Claims (3)
1. porous-medium gas hot water heater; It is characterized in that: by air and flue system, water system, igniter, anti-backfire structure, coagulate water discharge structure, insulation material and outer sleeve and constitute; Wherein, Air and flue system is made up of gas nozzle, injector, premixer, anti-backfire passage, the combustion chamber, air-introduced machine and the smoke discharge tube road that are surrounded by spiral heat exchange tube and middle cooling tube, and water system is made up of cold water inlet tube, water-cooled sleeve, middle cooling tube, high temperature resistant flexible pipe, spiral heat exchange tube, hot water fairlead, and the anti-backfire structure constitutes by reeded water-cooled sleeve and anti-backfire passage are set; Coagulating the water discharge structure constitutes by coagulating the water catch tray and coagulating the water fairlead; The outer sleeve bottom is provided with the flue socket, has air-vent on the top of its respective combustion chamber, and its underpart has screwed hole; Above-mentioned building block is to connect like this: gas nozzle is installed in the inlet of injector, and injector is connected in the premixer, and the water-cooled sleeve compresses with premixer's welding or bolt and is connected; The anti-backfire passage that communicates is up and down left in the water-cooled sleeve centre that is provided with groove, in the anti-backfire passage, is filled with the fine pore porous media material, in the groove of water-cooled sleeve, is filled with the fine pore porous media material; Insert spiral heat exchange tube then, the delivery port of water-cooled sleeve is connected with middle cooling tube, and the space that spiral heat exchange tube and middle cooling tube surround promptly constitutes the combustion chamber; In the combustion chamber, be filled with the macrovoid porous media material, between fine pore porous media material and macrovoid porous media material, leave the space, and the igniter electrode is set at this; Cold water inlet tube and middle cooling tube are connected on the water-cooled sleeve, are connected by high temperature resistant flexible pipe between middle cooling tube and the double helix heat exchanger tube, and spiral heat exchange tube is by the support ring card jail of its bottom outside on the sleeve; Support ring is connected through screwed hole by screw with outer sleeve; 1/3 place, top of spiral heat exchange tube has reserved small gaps, and closely settles in the bottom, and outer sleeve is housed outside spiral heat exchange tube; Fill insulant material between spiral heat exchange tube and outer sleeve; But be not all to fill up, 1/3 height is left a blank on top, has air-vent on the corresponding outer sleeve; The outer sleeve bottom connects the flue socket by screw through screwed hole; Air-introduced machine directly is placed on the flue socket, and the air-introduced machine outlet connects the smoke discharge tube road, leans on spiral water catch tray that coagulates of ligament place device of water heater bottom position at spiral heat exchange tube; Connect one at the lowest part that coagulates the water catch tray and coagulate the water fairlead, spiral heat exchange tube also is connected with the hot water fairlead.
2. porous-medium gas hot water heater according to claim 1 is characterized in that: the width in the cylindrical shell that spiral heat exchange tube surrounds is 40～250mm, and length is 50～400mm, highly is 150～300mm; The diameter dimension of anti-backfire passage is 10～20mm, is arranged as 1～6 row, and the center distance of anti-backfire passage is 20～40mm; The width of water heater main body is 100～300mm, and length is 100～460mm, highly is 200～500mm.
3. porous-medium gas hot water heater according to claim 1 is characterized in that: spiral heat exchange tube is single tube, two-tube or three pipe winding escalators.
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| CN200910068151XA CN101566386B (en) | 2009-03-18 | 2009-03-18 | Porous-medium gas hot water heater |
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| CN200910068151XA CN101566386B (en) | 2009-03-18 | 2009-03-18 | Porous-medium gas hot water heater |
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| CN101566386B true CN101566386B (en) | 2012-05-30 |
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| CN108266726A (en) * | 2018-03-15 | 2018-07-10 | 沈阳工程学院 | A kind of porous media combustor of subsidiary heat exchange function |
| CN108692592A (en) * | 2018-05-17 | 2018-10-23 | 上海电力学院 | Using the tube-plate type heat-exchanger of foam copper product |
| CN109506488B (en) * | 2018-12-28 | 2024-02-13 | 广东万和热能科技有限公司 | Gas wall-mounted furnace and condensing heat exchanger |
| CN110608435B (en) * | 2019-09-30 | 2021-06-25 | 西安科技大学 | Thermoelectric power generation heating system based on liquid fuel burning |
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|---|---|---|---|---|
| EP0342918A2 (en) * | 1988-05-17 | 1989-11-23 | Ube Industries, Ltd. | Fluidized bed apparatus |
| US5375563A (en) * | 1993-07-12 | 1994-12-27 | Institute Of Gas Technology | Gas-fired, porous matrix, surface combustor-fluid heater |
| CN1570505A (en) * | 2004-04-27 | 2005-01-26 | 傅维镳 | Porous ceramic combustion gas water heater |
-
2009
- 2009-03-18 CN CN200910068151XA patent/CN101566386B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0342918A2 (en) * | 1988-05-17 | 1989-11-23 | Ube Industries, Ltd. | Fluidized bed apparatus |
| US5375563A (en) * | 1993-07-12 | 1994-12-27 | Institute Of Gas Technology | Gas-fired, porous matrix, surface combustor-fluid heater |
| CN1570505A (en) * | 2004-04-27 | 2005-01-26 | 傅维镳 | Porous ceramic combustion gas water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101566386A (en) | 2009-10-28 |
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