CN109695954A - Gas heater - Google Patents
Gas heater Download PDFInfo
- Publication number
- CN109695954A CN109695954A CN201711005205.9A CN201711005205A CN109695954A CN 109695954 A CN109695954 A CN 109695954A CN 201711005205 A CN201711005205 A CN 201711005205A CN 109695954 A CN109695954 A CN 109695954A
- Authority
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- China
- Prior art keywords
- gas heater
- described matrix
- matrix
- temperature
- combustion chamber
- 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.)
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- 239000011159 matrix material Substances 0.000 claims abstract description 93
- 239000003054 catalyst Substances 0.000 claims abstract description 42
- 238000002485 combustion reaction Methods 0.000 claims abstract description 41
- 230000003197 catalytic effect Effects 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims description 26
- 238000006555 catalytic reaction Methods 0.000 claims description 20
- 230000000977 initiatory effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 37
- 239000000567 combustion gas Substances 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 230000000694 effects Effects 0.000 description 6
- 239000002737 fuel gas Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 oxo transition metal Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/18—Radiant burners using catalysis for flameless combustion
-
- 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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
-
- 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
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2212/00—Burner material specifications
- F23D2212/10—Burner material specifications ceramic
- F23D2212/101—Foam, e.g. reticulated
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
The present invention discloses a kind of gas heater, the gas heater includes: catalytic burner, in the combustion chamber, the catalytic burner includes matrix, described matrix is heating member, and be electrically connected to a power source, and described matrix is equipped with multiple burner ports through its upper and lower surface, the hole wall of each burner port is equipped with catalyst.Technical solution of the present invention makes gas heater overall structure more compact.
Description
Technical field
The present invention relates to technical field of water heaters, in particular to a kind of gas heater.
Background technique
Catalysis burning refers to fuel under the effect of the catalyst, the combustion reaction carried out in a certain temperature conditions.
In general, realizing that the premise of catalysis burning is first to preheat catalyst.At present in gas heater, generally exist
Heating member is set below catalytic burner, and heating member first heats the air in flowing in combustion chamber, the air after being heated
The catalyst in catalytic burner is heated again.But since heating member needs first to heat air, then heating member and catalysis
It needs to be spaced a distance between burner, so that whole occupied space is larger, gas heater overall volume is excessive.
Summary of the invention
The main object of the present invention is to provide a kind of gas heater, it is intended to so that gas heater overall structure is more stepped up
It gathers.
To achieve the above object, gas heater proposed by the present invention includes:
Catalytic burner is set in the combustion chamber, and the catalytic burner includes matrix, and described matrix is heating member,
And it is electrically connected to a power source, and described matrix is equipped with multiple burner ports through its upper and lower surface, the hole of each burner port
Wall is equipped with catalyst.
Preferably, the outer peripheral edge of the catalytic burner and the inner wall of the combustion chamber seal against.
Preferably, the catalytic burner further includes the outer peripheral surface enclosed set on described matrix, and fixed with described matrix
Peripheral frame, the peripheral frame and the inner wall of the combustion chamber seal against.
Preferably, the upper and lower ends of the peripheral frame are equipped with the limit flange extended inwardly, and the two limit flange are common
Clamp described matrix.
Preferably, the outer peripheral surface of described matrix is coated with insulating layer, and the insulating layer is located at the peripheral frame and described matrix
Between.
Preferably, the catalytic burner further includes the temperature sensor in described matrix, the temperature sensor
Temperature-sensitive portion touched with described matrix.
Preferably, the temperature-sensitive portion being also provided in described matrix for the temperature sensor is adapted to the fixing groove being embedded.
Preferably, the combustion chamber has air inlet, is equipped with intake valve, the control of the gas heater at the air inlet
When device processed reaches preset catalysis initiation temperature to the temperature in described matrix, the inlet open is controlled.
Preferably, the hole wall of the burner port is equipped with carrier, and the catalyst is set on the carrier, and the carrier is in pleat
Corrugation.
Preferably, the material of described matrix is stainless steel, copper alloy or aluminium alloy.
In the present invention, by setting heating member for the matrix of catalytic burner, and on matrix be arranged catalyst side
Formula, after matrix and power supply connection, matrix itself can generate heat, so that catalyst be heated.The matrix itself is made
The mode directly heated to catalyst for heating member relative to additional setting heat transfer piece indirect heating and passes through heating
Air carrys out the mode of indirect heating, and direct-fired heat-energy losses are small, and capacity usage ratio is high, enables catalyst by rapidly
It is heated to catalysis initiation temperature, to reduce the discharge of harmful substance.Simultaneously as not needing that heat transfer piece is additionally arranged again
Heat transfer, and catalyst is directly set on matrix for heating, it does not need to be arranged with catalyst interval, so that overall structure is more
Compact, layout is also more reasonable, so that space be greatly saved, it is excessive to avoid gas heater complete machine.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of gas heater of the present invention；
Fig. 2 is the top view of catalytic burner in Fig. 1；
Fig. 3 is catalytic burner in Fig. 2 along the cut-away illustration of A-A；
Fig. 4 is the cut-away illustration of the burner port of catalytic burner in Fig. 2.
Drawing reference numeral explanation:
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of gas heater, as shown in Figure 1, the gas heater includes shell 10, the shell
10 have a combustion chamber 11, are equipped with catalytic burner in the combustion chamber 11.In general, being so that combustion gas mixes with air more fills
Point, fuel gas mixer 30 is additionally provided in the combustion chamber 11 and below catalytic burner.The fuel gas mixer 30 has
Have a mixing chamber 31, the mixing chamber 31 has air inlet 32, air inlet 33 and a mixed gas outlet 34, the air inlet 33 with
Feeder, as fuel cartridge is connected to.It is typically provided with blower 50 at the air inlet 32, outside air is pumped into the mixing chamber
In 31, generally, blower 50 is mounted on the lower section of combustion chamber 11 to pump up air.The mixed gas outlet 34 with it is described
Combustion chamber 11 is connected to, it is preferable that the mixed gas outlet 34 is located at the top surface of the fuel gas mixer 30, to be catalyzed described in face
Burner outlet air.The mixed gas outlet 34 preferably have it is multiple so that wind-out range is big, and outlet air is more uniform.Combustion gas
After being mixed in the mixing chamber 31 with air, it is discharged from the mixed gas outlet 34, and carried out on the catalytic burner
Ignition, the flue gas after burning then pass through the exhaust outlet discharge at 11 top of combustion chamber.In general, also being set at the air inlet 33
Have an intake valve 40, the controller 80 of the gas heater controlled by controlling the working condition of the intake valve 40 it is described into
33 air inlet of port stops air inlet.
In the present embodiment, the gas heater further includes water pipe 60 and heat exchanger 70, and the heat exchanger 70 is preferably wing
Pipe heat exchanger 70, the water pipe 60 are interspersed on the heat exchanger 70, and the heat exchanger 70 is located on the catalytic burner
Side for absorbing the heat of fuel gas buring release, and heats the water in water pipe 60.
In embodiments of the present invention, incorporated by reference to referring to figs. 2 to Fig. 4, catalytic burner includes matrix 20, and matrix 20 is heating
Part, and be electrically connected to a power source, and described matrix 20 is equipped with multiple burner ports 21 through its upper and lower surface, each burning
The hole wall in hole 21 is equipped with catalyst 22.
In the embodiment of the present invention, described matrix 20 is usually in square block, certainly, is not limited thereto in the present invention.
Described matrix 20 can be used the materials such as stainless steel, copper alloy or aluminium alloy and be made into, as long as described matrix 20 can be conductive, and connect
Heat is generated behind energization source to heat catalyst 22.The biggish material of resistance value can be selected in matrix 20, is so conducive to itself
It generates heat when energization.Matrix 20 is specifically electrically connected with controller 80, and when gas heater is opened, controller 80 first controls matrix 20
It is connected with power supply, catalyst 22 is preheated, then carries out ignition again.
In the present embodiment, multiple burner ports 21 are perfectly even arranged on the base 20, such as can be arranged in matrix, such as
This makes matrix 20, and combustion case is consistent everywhere, is more advantageous to heat exchanging device 70 and is evenly heated.The catalyst 22 is preferably
The hole wall of the burner port 21 is set by the way of coating.When the mixed gas of air and combustion gas rises to the burner port
When in 21, mixed gas carries out catalysis burning under the catalytic action of catalyst 22.Preferably, the burner port 21 is square hole,
Certainly, the burner port 21 can also be circular hole or trapezoidal hole etc..
In the present invention, by setting heating member for the matrix 20 of catalytic burner, and catalyst is set on the base 20
22 mode, after matrix 20 and power supply connection, matrix 20 itself can generate heat, so that catalyst 22 be heated.
The mode that the matrix 20 itself directly heats catalyst 22 as heating member, it is indirect relative to additional setting heat transfer piece
It heats and in such a way that heating air is come indirect heating, direct-fired heat-energy losses is small, capacity usage ratio is high, so that urging
Agent 22 can be heated rapidly catalysis initiation temperature, to reduce the discharge of harmful substance.Simultaneously as not needing
Heat transfer piece is additionally set to conduct heat again, and catalyst 22 is directly set on matrix for heating 20, is not needed and catalyst 22
Interval setting, so that overall structure is more compact, layout is also more reasonable, so that space be greatly saved, avoids combustion gas heat
Hydrophone complete machine is excessive.In the present invention, due to the catalytic action of catalyst 22, combustion gas at a lower temperature can on the base 20 into
Row burning, and combustion gas is discharged close to completely burned almost without CO.Since the flue-gas temperature after catalysis burning compares flaming combustion
Temperature it is low, therefore can realize the low emission of nitrogen oxides.
More existing that heating member is embedded in matrix 20, heating member heated substrate 20, matrix 20 is again by heat transfer
To catalyst 22.This that heating member is embedded the processing method in matrix 20 is complex, increases processing cost, and work as
Maintenance can not be realized after heating member damage, and matrix 20 is caused integrally also to be scrapped.And in the present invention, matrix 20 itself is both used as and leads
Electric part, and as heating member, processing method is simple, and maintenance is easy damaging.
In the embodiment of the present invention, the catalytic burner further includes the temperature sensor 24 in described matrix 20, institute
The temperature-sensitive portion for stating temperature sensor 24 is in contact with described matrix 20, to detect the temperature of described matrix 20.In the embodiment, it is
So that temperature-measuring results are more accurate, the temperature with catalyst 22 is more closely, then the temperature sensor 24 preferably extends into institute
It states and is arranged inside matrix 20.Specifically, fixing groove is also provided in described matrix 20, the temperature sensor 24 has adaptation embedding
It is located at the temperature-sensitive portion in the fixing groove, then what the temperature-sensitive portion measured is the temperature inside described matrix 20, rather than matrix
The temperature on 20 surfaces, the internal temperature and 22 temperature of catalyst are more close.
Specifically, the temperature sensor 24 is electrically connected with controller 80, and the controller 80 is used in the combustion gas heat
When hydrophone is opened, controls the intake valve 40 and close, and control described matrix 20 and power on.The controller 80 is also used to
It when the temperature of described matrix 20 reaches preset catalysis initiation temperature, controls the intake valve 40 and opens, so that combustion gas enters
Catalysis burning is carried out in the burner port 21.And when the temperature of described matrix 20 is lower than preset catalysis initiation temperature, table
The catalytic effect of bright catalyst at this time 22 is poor, therefore the intake valve 40 is to close at this time, enters burning to avoid combustion gas
Room 11.The preset catalysis initiation temperature is determined with specific reference to the type of catalyst 22, it is preferable that described preset to be catalyzed
Temperature is fired between 100-500 degrees Celsius.To save electricity, the controller 80 is also used to after being catalyzed flameholding, according to
Thermic load controls matrix 20 and powers off.Certainly, in other embodiments, the controller 80 can also work pre- in described matrix 20
If after duration, controlling the intake valve 40 and opening.
The intake valve 40 is preferably proportioning valve.Controller 80 by control proportioning valve not only can control combustion gas conducting or
It blocks, can also adjust the air inflow of the combustion gas into combustion chamber 11.Further, the controller 80 is also used to according to combustion chamber
The revolving speed of 11 gas inlet amount adjustment blower 50, to control the air capacity for entering combustion chamber 11, to adjust into combustion chamber
11 air and the ratio of combustion gas, so that the heat of release can meet water demand when combustion gas carries out flameless combustion.
After matrix 20 is powered a period of time, catalyst has had been heated to higher temperature, and there is preferable catalysis to live
Property, controller 80 can control matrix 20 to power off at this time.Specifically, in the present embodiment, when catalyst 22 is heated to preset catalysis
When initiation temperature, controller 80 controls intake valve 40 and opens, and controls the power-off of matrix 20, to save the energy.Meanwhile working as intake valve
After unlatching, combustion gas ignition near matrix 20, the temperature for generation of burning can continue to keep the activity of catalyst 22.Or
Person, in other embodiments, after catalyst 22 is heated to preset duration, controller 80 controls matrix 20 and powers off.
In the present embodiment, the outer peripheral edge of described matrix 20 and the inner wall of the combustion chamber 11 are sealed against, by combustion chamber
11 are divided into two cavitys up and down, and are connected between upper and lower two cavitys by burner port 21, and so all mixed gas are all
Catalysis burning can be carried out in burner port 21, avoid mixed gas between 11 inner wall of described matrix 20 and the combustion chamber
Gap and without catalysis burning just be discharged, improve the utilization rate of combustion gas.Certainly, matrix 20 can also be with the inner wall of combustion chamber 11
Interval setting.In the present embodiment, the inner wall of the outer peripheral edge and combustion chamber 11 of matrix 20 is sealed against, and refers to the outer of matrix 20
Circumferential surface and the inner wall of combustion chamber 11 seal against, i.e. between the form and combustion chamber 11 of the settable sealing ring of the circumferential surface of matrix 20
It seals against.Or state the inner wall of combustion chamber 11 and be circumferentially equipped with overlap joint protrusion, 20 lap hermetically of described matrix is in institute
The top surface for stating overlap joint protrusion, so facilitates the installation of matrix 20, as long as matrix 20 is placed on overlap joint protrusion.It is anti-
Only matrix 20 shakes, and matrix 20 can be also fixed on overlap joint protrusion by screw.The above two formula that seals against both can be independent
Setting, can also be arranged, simultaneously to realize better effect.
To reduce scattering and disappearing for 20 heat of described matrix, in one embodiment, the outer peripheral surface of described matrix 20 is coated with heat preservation
Layer 26.In the embodiment, the insulating layer 26 is preferably heat-preservation cotton.By the way that insulating layer 26 is arranged, heat can be reduced towards surrounding
It scatters and disappears, so that heat is concentrated inwardly to heat the catalyst 22, so that heat utilization rate is improved, preferably to catalyst 22
It is preheated.
Further, the gas heater further includes the outer peripheral surface enclosed set on described matrix 20 and consolidates with described matrix 20
Fixed peripheral frame 25, the peripheral frame 25 and the inner wall of the combustion chamber 11 seal against, and the insulating layer 26 is located at the peripheral frame 25
Between described matrix 20.In the present embodiment, by the way that peripheral frame 25 is arranged, insulating layer 26 is clamped jointly by peripheral frame 25 and matrix 20
Fixed, to facilitate the setting of insulating layer 26.Meanwhile peripheral frame 25 be it is fixed with the inner wall of combustion chamber 11, be such as spirally connected or
Clamping etc., to matrix 20 is fixed on the inner wall of combustion chamber 11.
The upper and lower ends of the peripheral frame 25 are equipped with the limit flange 251 extended inwardly, and the two limit flange 251 are common
Clamp described matrix 20.In the embodiment, described matrix 20 is between the two limit flange 251, and by two limits
Flange 251 clamps jointly.The peripheral frame 25 is connect with the inner wall of the combustion chamber 11.
The hole wall of the burner port 21 is equipped with carrier 23, and the catalyst 22 is set on the carrier 23, the carrier 23
In accordion.In the embodiment, since the carrier 23 is arranged in accordion, it is capable of increasing the surface area of carrier 23, so that carrying
23 surface of body can be attached to more catalyst 22, to improve catalytic performance.The carrier 23 can by heat-resisting ceramic material or
Heat-resisting metal material is made, such as aluminum oxide.Catalyst 22 can be for containing palladium, platinum, rare earth metal or oxo transition metal
Catalyst 22 of compound etc., or two or more any mixture in them.Catalyst 22 usually has
Fixed catalysis initiation temperature, i.e., after the temperature of matrix 20 itself reaches catalysis initiation temperature, the combustion gas for flowing through it will be
The effect of catalyst 22 is lower to carry out flameless combustion with the oxygen in air to discharge heat, and gaseous mixture is able to carry out more sufficiently as a result,
Faster burning, to improve energy utilization rate, and reduces the discharge of harmful substance.
In the present embodiment, the catalytic burner specifically can be with the inner wall of combustion chamber 11 by screw locking, or passes through
The mode of buckle and card slot carries out snapping, or the form of setting support rim is supported catalysis on the inner wall of combustion chamber 11
Burner.
In the present embodiment, water pipe 60 includes inlet segment, water exit end, and is respectively communicated with the heat exchange of inlet segment and water outlet
Section.Heat exchanging segment includes interconnected the first heat exchanging segment and the second heat exchanging segment, and the first heat exchanging segment is connected to inlet segment, the second heat exchange
The connection of Duan Zeyu water exit end.First heat exchanging segment is preferably in coil-like setting, and edge between heat exchanger 70 and catalytic burner
The circumferential winding of 11 inner wall of combustion chamber, to be exchanged heat in advance with the flame above catalytic burner.Second heat exchanging segment then interts
In in heat exchanger 70, exchanged heat by being contacted with heat exchanger 70.In the present embodiment, cold water enters first by inlet segment
Heat exchanging segment carries out first time heat exchange, then enters the second heat exchanging segment from the first heat exchanging segment and carry out second of heat exchange, finally from water exit end
Outflow, so heats cold water twice, improves the utilization rate of heat and the heating efficiency to water.Certainly, other
In embodiment, heat exchanging segment can also only include the second heat exchanging segment.
Further, venturi gas mixed nub structure, including two input ports also can be used in the fuel gas mixer 30 of gas heater
(respectively air inlet 32 and air inlet 33) and delivery outlet (i.e. mixed gas outlet 34), two input ports respectively with blower 50 go out
The gas outlet connection in air port, gas inlet pipeline, delivery outlet are connected to combustion chamber 11.
In the present embodiment, venturi gas mixed nub structure can be from the upper pipeline for first shrinking then be gradually expanded downward, in pipe
Road exit offers adsorbent chamber；After being compressed by the air-flow of venturi gas mixed nub structure from the coarse to fine, flow velocity becomes larger, and generates text
Effect in mound can generate low pressure near swiftly flowing fluid, to generate suction-operated, ambient gas is caused to pass through suction
Attached chamber is inhaled into pipeline.It, can be using air that blower 50 pumps as being compressed by the Venturi effect of venturi gas mixed nub structure
Gas realize air with combustion gas using combustion gas as the gas being adsorbed and adequately mix, so that it is more abundant to make to burn.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of gas heater characterized by comprising
Shell has a combustion chamber；With,
Catalytic burner is set in the combustion chamber, and the catalytic burner includes matrix, and described matrix is heating member, and with
Power electric connection, and described matrix is equipped with multiple burner ports through its upper and lower surface, the hole wall of each burner port is equal
Equipped with catalyst.
2. gas heater as described in claim 1, which is characterized in that the outer peripheral edge of the catalytic burner and the burning
The inner wall of room seals against.
3. gas heater as claimed in claim 2, which is characterized in that the catalytic burner further includes enclosing set on the base
The outer peripheral surface of body, and the peripheral frame fixed with described matrix, the peripheral frame and the inner wall of the combustion chamber seal against.
4. gas heater as claimed in claim 3, which is characterized in that the upper and lower ends of the peripheral frame are equipped with to be extended inwardly
Limit flange, the two limit flange clamp described matrix jointly.
5. gas heater as claimed in claim 3, which is characterized in that the outer peripheral surface of described matrix is coated with insulating layer, institute
Insulating layer is stated between the peripheral frame and described matrix.
6. gas heater as described in claim 1, which is characterized in that the catalytic burner further includes being set to described matrix
On temperature sensor, temperature-sensitive portion and the described matrix of the temperature sensor touch.
7. gas heater as claimed in claim 6, which is characterized in that be also provided in described matrix for the temperature sensing
The temperature-sensitive portion of device is adapted to the fixing groove being embedded.
8. gas heater as claimed in claim 6, which is characterized in that the combustion chamber has air inlet, the air inlet
Place is equipped with intake valve, and the controller of the gas heater reaches preset catalysis initiation temperature to the temperature in described matrix
When, control the inlet open.
9. the gas heater as described in claim 1 to 8 any one, which is characterized in that the hole wall of the burner port is equipped with
Carrier, the catalyst are set on the carrier, and the carrier is in accordion.
10. the gas heater as described in claim 1 to 8 any one, which is characterized in that the material of described matrix is stainless
Steel, copper alloy or aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711005205.9A CN109695954A (en) | 2017-10-24 | 2017-10-24 | Gas heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711005205.9A CN109695954A (en) | 2017-10-24 | 2017-10-24 | Gas heater |
Publications (1)
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| JP2001050508A (en) * | 1999-03-24 | 2001-02-23 | Denso Corp | Catalyst combustion apparatus with vaporization function |
| KR20010113188A (en) * | 2000-06-16 | 2001-12-28 | 손재익 | premixed fiber-mat catalytic burner |
| KR20040090631A (en) * | 2003-04-18 | 2004-10-26 | 한국에너지기술연구원 | Sequential catalytic combustion system and its method |
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Application publication date: 20190430 |