CN206235023U - Gas-fired condensing boiler - Google Patents
Gas-fired condensing boiler Download PDFInfo
- Publication number
- CN206235023U CN206235023U CN201620769157.5U CN201620769157U CN206235023U CN 206235023 U CN206235023 U CN 206235023U CN 201620769157 U CN201620769157 U CN 201620769157U CN 206235023 U CN206235023 U CN 206235023U
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- CN
- China
- Prior art keywords
- gas
- heat
- condensing boiler
- fired condensing
- exchanger rig
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model embodiment provides a kind of gas-fired condensing boiler, and the flue gas that the gas-fired condensing boiler is produced carries out heat exchange with the backwater directly contact of heating system.The gas-fired condensing boiler that the utility model embodiment is provided is energy-efficient, safe and reliable.
Description
Technical field
The utility model is related to boiler technology field, more particularly to a kind of gas-fired condensing boiler.
Background technology
Gas-fired condensing boiler, is by condensing the water vapour in flue gas so that the latent heat of vaporization therein is recycled,
So as to improve the boiler of the thermal efficiency.Condensing boiler it is critical only that condensation technology, be a kind of novel energy-conserving, the technology of environmental protection；It
Principle and uncomplicated, it is simple that to summarize be exactly by flue gas condensing, the heat energy in recovered flue gas, so as to reach raising boiler
The purpose of efficiency.
In conventional gas boiler, exhaust gas temperature is typically in 120~180 DEG C, even more high so that fuel (such as natural gas：
CH4+2O2 → CO2+2H2O) burning when the water that produces, be the water vapour in superheat state in flue gas, with flue gas from chimney
Middle loss.The conventional boiler thermal efficiency typically can only achieve 85%~91%.And gas-fired condensing boiler, it is reduced to exhaust gas temperature
Below 58 DEG C of condensation temperatures, the latent heat of vaporization of the sensible heat and water vapour in flue gas is fully reclaimed, the thermal efficiency reaches as high as 106%
(being calculated by Lower heat value).
Conventional gas boiler energy-saving effect is poor, and floor space is big, and programming rate is slow：Traditional condensing boiler is changed using tubular type
Hot device, heat transfer coefficient is small, and heat transfer effect is poor, when boiler controller system starts programming rate it is slow, it is necessary to time it is long.And to obtain
Condensation effect, only increases heat exchange area, and floor space is very big.
Conventional gas boiler service life is short, there is potential safety hazard：Traditional condensing boiler uses pipe heat exchanger, condensed water
Condense on tube wall, it may occur that low-temperature corrosion, trommel causes leakage, and not only boiler service life is short, and influence boiler
Safe and stable operation.
Utility model content
The utility model provides a kind of gas-fired condensing boiler, can solve the problem that boiler not environmentally energy-conservation, life-span in the prior art
Short problem.
In order to solve the above technical problems, the technical scheme that the utility model is used is：A kind of combustion gas condensation pot is provided
Stove, the flue gas that gas-fired condensing boiler is produced carries out heat exchange with the backwater directly contact of heating system.
Wherein, gas-fired condensing boiler includes cylinder, and heat-exchanger rig is provided with cylinder, and the inwall of heat-exchanger rig is provided with water drenching
Disk, water spraying tray has multiple holes, and backwater passes through multiple holes and carries out heat exchange with flue gas.
Wherein, water spraying tray is multiple, and in the vertical direction interval setting.
Wherein, the one of one end of adjacent water spraying tray is connected with the left wall of heat-exchanger rig, the other end and heat-exchanger rig
Right wall is not connected to；Another one end of adjacent water spraying tray is not connected to the left wall of heat-exchanger rig, the right side of the other end and heat-exchanger rig
Wall is connected.
Wherein, heat-exchanger rig top is provided with return water tank, and one end of casing is provided with inlet of cold air, and the other end is provided with hot sky
Gas is exported, and the upper end of cylinder is provided with backwater import, heat exchanger is provided with return water tank, and the backwater from heating system enters from backwater
Mouth enters and carries out heat exchange by heat exchanger with the cold air entered from inlet of cold air, is changed into hot empty after cold air heat exchange
Gas flows out from hot air outlet.
Wherein, heat exchanger includes the rounded base tube in a section, and the outer surface of base tube forms the fin that multi-turn is placed equidistant,
The inner surface of base tube is formed with the screw thread or fin that multi-turn is placed equidistant.
Wherein, gas-fired condensing boiler also includes burner, and hot-air enters burner and participates in burning by hot-flow flue.
Wherein, gas-fired condensing boiler also includes corrugated internal furnace combustion chamber, and corrugated internal furnace combustion chamber is located at inner barrel, air
Combustion chamber is entered by burner and participates in burning, the flue gas produced after the burning water outdoor with burning is coated on carries out heat exchange.
Wherein, gas-fired condensing boiler also includes reversal chamber, and the flue gas produced after burning passed through reversal chamber after entering heat exchange
Into heat-exchanger rig.
Wherein, gas-fired condensing boiler also includes chimney, and chimney is connected with heat-exchanger rig, and flue gas carries out hot friendship in heat-exchanger rig
Changing rear temperature is reduced and is discharged by chimney.
The gas-fired condensing boiler that the utility model embodiment is provided is by the flue gas for producing gas-fired condensing boiler and heating
The backwater directly contact of system carries out heat exchange, and the gas-fired condensing boiler that the utility model embodiment is provided is energy-efficient, safety
It is reliable.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the utility model embodiment, below will be to needed for embodiment description
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Other accompanying drawings are obtained, wherein：
Fig. 1 is the cross-section structure simplified schematic diagram of the embodiment of the utility model gas-fired condensing boiler one；
Fig. 2 is the structural representation of the heat-exchanger rig of the gas-fired condensing boiler shown in Fig. 1；
Fig. 3 is the structural representation of the heat exchanger of the gas-fired condensing boiler shown in Fig. 1.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1 is referred to, Fig. 1 is the cross-section structure simplified schematic diagram of the embodiment of the utility model gas-fired condensing boiler one.This reality
Include burner 21, cylinder 22, corrugated internal furnace combustion chamber 23, reversal chamber 24, heat exchange with the gas-fired condensing boiler of new embodiment
Device 25, return water tank 26, inlet of cold air 27, hot air outlet 28, heat exchanger 29, chimney 30, water supply tank 31, outlet pipe
32。
Burner 21 is used for fuel combustion, and the burner of the present embodiment uses Metal Fibre Combustion formula burner 21,
It is that, using specialty metal fiber as burning surface, combustion intensity can reach 2500kw/ ㎡, and flame is short, only conventional diffusion formula
/ 3rd of flame.So, combustion chamber is many with regard to relative decrease, and boiler overall dimensions reduce.Corrugated internal furnace combustion chamber 23 is whole
In cylinder, the outer wall of cylinder 22 uses insulation outer casing to body, for keeping the temperature in boiler.The energy of corrugated internal furnace combustion chamber 23
Heat transfer enough in reinforcing burner hearth.
Incorporated by reference to reference picture 2, Fig. 2 is the structural representation of the heat-exchanger rig of the gas-fired condensing boiler shown in Fig. 1.Cylinder 22
Heat-exchanger rig 25 is inside provided with, the top of heat-exchanger rig 25 is provided with water inlet 251 and outlet flue 252, bottom is provided with the and of delivery port 253
Smoke inlet 254, in the present embodiment, the water that water inlet 251 is come in is the backwater from after the heat exchange of return water tank 26, delivery port
The water of 253 outflows enters the bottom of cylinder 22, and the cigarette that smoke inlet 254 is come in is the flue gas entered from reversal chamber 24, and outlet flue 252 flows
The cigarette for going out is the flue gas for carrying out the cooling after heat exchange.The inwall of heat-exchanger rig 25 is provided with water spraying tray 255, and water spraying tray 255 has
Multiple holes, backwater passes through multiple holes and carries out heat exchange with flue gas.In the present embodiment, water spraying tray 255 is multiple, and in side vertically
Upward interval setting.Adjacent one of one end of water spraying tray 255 is connected with the left wall of heat-exchanger rig 25, and the other end is filled with heat exchange
The right wall for putting 25 is not connected to；Another one end of adjacent water spraying tray is not connected to the left wall of heat-exchanger rig 25, the other end with heat exchange
The right wall connection of device 25.Residence time of the flue gas in cylinder 22 can be extended by above-mentioned setting, allow flue gas fully to participate in
Heat exchange.In the present embodiment, water spraying tray 255 is sieve-like stephanoporate steel plate, and backwater is dispersed into the tiny water of multiply by multiple holes
Stream, current are in the form of a column or drops, will not be taken away by flue gas, and heat exchange effect is good.
The top of heat-exchanger rig 25 is provided with return water tank 26, and the right-hand member of cylinder 22 is provided with inlet of cold air 27, and left end is provided with heat
Air outlet slit 28, the upper end of cylinder 22 is provided with backwater import, return water tank 26 and is provided with heat exchanger 29, returning from heating system
Water enters from backwater import and carries out heat exchange with the cold air entered from inlet of cold air 27, and heat is changed into after cold air heat exchange
Air flows out from hot air outlet 28.
Fig. 3 is please referred to, Fig. 3 is the structural representation of the heat exchanger of the gas-fired condensing boiler shown in Fig. 1.This practicality is new
The heat exchanger 29 of type embodiment includes base tube 1, and the section of the base tube 1 is rounded, and the outer surface of base tube 1 forms multi-turn and is placed equidistant
Fin 2, fin 2 can be twist placed equidistant in the outer surface of base tube 1, or H-shaped fin is placed equidistant in base tube 1
Outer surface, those skilled in the art can be set as the case may be, it is preferable that the height of the fin 2 that the outer surface of base tube 1 is formed
It is 5-8mm.The inner surface of base tube 1 is formed with screw thread 3 or the fin (not shown) that multi-turn is placed equidistant, base tube 1, base tube 1 it is outer
The fin 2 and screw thread 3 that surface is formed are integrally formed using material of the same race.
Heat exchanger of the present utility model has advantages below：
1. small volume, lightweight, is easily installed.Traditional heat exchanger volume is huge, is meeting the operating mode of identical thermic load
When, internal thread external finned tube heat exchanger volume only has 1/10 or so of traditional shell-and-tube heat exchanger again, and floor space is small, saves empty
Between；Simultaneously also because small volume, lightweight, easily facilitate installations, dismantle.
2. fouling is few, easy to maintenance.Fouling of heat exchangers can directly reduce heat transfer effect, not reach technological requirement, influence life
Efficiency is produced, increases maintenance cost, therefore it is internal thread external finned tube formula design of heat exchanger key factor to reduce fouling tendency as far as possible.
Internal thread external finned tube is the depth of the pitch and screw thread that heat exchanger tube helix is designed according to the different quantity of circulating water of user, is rolled
System spiral heat exchange tube part, using fluid in special spiral grooved tube with certain flow rate rotational flow, reach turbulence state,
The flow velocity of near-wall increases, transversal flow tube wall, incrustation scale is adhered to less than on tube wall；The second is the heat exchanger tube is to use special work
The heat exchange element that skill makes, per se with the ability expanded with heat and contract with cold, shrinks and expansion energy plays self-cleaning effect；The third is this is changed
Heat pipe, due to passing through in special helix tube, can produce fixed range dither in normal operation, make the impurity in medium
In suspended state, this be also make tube wall will not incrustation key factor.
3. heatproof, pressure-resistant, long lifespan.The heat-exchanging tube bundle and tube sheet of internal thread external finned tube heat exchanger use phase same material,
With the unified coefficient of expansion, the deformation of heat exchanger will not be caused due to pressure, temperature variation.Heat exchanger need not be installed additional and subtracted
Temperature, decompressor, 400 DEG C of highest heatproof, pressure-resistant 5.3MPa.
4. energy-efficient.Internal thread external finned tube heat exchanger significantly increases exchange capability of heat, especially because of the design of its uniqueness
When there is the heat-exchanging state of phase transformation, more there is significant advantage compared with traditional heat exchangers.Under the operating mode that carbonated drink exchanges such as steam heating water,
Conventional shell-and-tube heat exchanger coefficient of heat transfer k values are typically up to 6000W/ (m2DEG C), internal thread external finned tube heat exchanger its
Coefficient of heat transfer k values may be up to 14000W/ (m2℃)。
What deserves to be explained is, the gas-fired condensing boiler of the utility model embodiment also includes water supply tank 31, and water supply tank 31 is used
When the water in cylinder 22 lacks, to moisturizing in cylinder 22.
The structure of the gas-fired condensing boiler of the utility model embodiment is described above, below in conjunction with the accompanying drawings 1-3 explanations combustion
The course of work of gas condensing boiler.
Combustion air enters return water tank 26 by inlet of cold air 27, is entered by heat exchanger 29 in return water tank 26
Row heat exchange causes that return water temperature reduction, cold air heating become hot-air, and hot-air enters burner 21 and participates in combustion by hot-flow flue
Burn.Natural gas enters and burner 21 and is fully burnt in corrugated internal furnace combustion chamber 23, the high-temperature flue gas of generation be immersed in water
In corrugated internal furnace combustion chamber 23 exchanged heat, the flue gas after heat exchange by reversal chamber 24 enter heat-exchanger rig 25, heat-exchanger rig
25 receive the backwater from after the heat exchange of return water tank 26 and carry out heat exchange with flue gas directly contact, after heat exchange, cooled flue gas,
Heating backwater, flue gas enters air by chimney 30.Heated backwater flows into the bottom of cylinder 22, is burnt by corrugated internal furnace
Room 23 is heated, and is extracted out by water circulating pump by outlet pipe 32 after being finally reached preset temperature, participates in heating system heat supply.
The gas-fired condensing boiler of the utility model embodiment has advantages below：
1. because by the way of air water direct heat transfer, simplifying boiler structure, heat exchange area is reduced, boiler takes up an area face
Product is small, and consuming steel are few, low cost of manufacture.
2. flue gas and water is in direct heat transfer, the water recovery in flue gas into condensed water be blended in water, play back
The effect of condensed water is received, this is to the regional particularly important of the droughts such as Xinjiang.
3. flue gas and water is in direct heat transfer, the solubility reduction of oxygen when water heats up, and serves the effect of deoxygenation, system without
Oxygen-eliminating device is needed, the oxygen corrosion of heating surface is reduced, the service life of boiler is extended.
4. corrugated internal furnace, the heat transfer in reinforcing burner hearth are used.
5. Metal Fibre Combustion formula burner is used, combustion chamber volume is reduced.
6. water drenching disc type heat-exchanger rig is used, and backwater passes through gravity fall, without any energy, power and energy saving.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (8)
1. a kind of gas-fired condensing boiler, it is characterised in that the backwater of the flue gas that the gas-fired condensing boiler is produced and heating system
Directly contact carries out heat exchange in heat-exchanger rig；
The gas-fired condensing boiler includes cylinder, and in the cylinder, the inwall of the heat-exchanger rig sets the heat-exchanger rig
There is water spraying tray, the water spraying tray has multiple holes, and the backwater passes through flue gas described in the multiple Kong Houyu and carries out directly heat friendship
Change；
The gas-fired condensing boiler also includes chimney, and the chimney is connected with the heat-exchanger rig, and the flue gas is in the heat exchange
Temperature is reduced and discharged by the chimney after heat exchange is carried out in device.
2. gas-fired condensing boiler according to claim 1, it is characterised in that the water spraying tray is multiple, and in side vertically
Upward interval setting.
3. gas-fired condensing boiler according to claim 2, it is characterised in that adjacent one of one end of the water spraying tray
Left wall with the heat-exchanger rig is connected, and the other end is not connected to the right wall of the heat-exchanger rig；The adjacent water spraying tray is another
One one end is not connected to the left wall of the heat-exchanger rig, and the other end is connected with the right wall of the heat-exchanger rig.
4. gas-fired condensing boiler according to claim 1, it is characterised in that the heat-exchanger rig top is provided with backwater water
Case, one end of the cylinder is provided with inlet of cold air, and the other end is provided with hot air outlet, and the upper end of the cylinder is provided with backwater and enters
Mouthful, be provided with heat exchanger in the return water tank, the backwater from the heating system enter from the backwater import and with from institute
The cold air for stating inlet of cold air entrance carries out heat exchange, and be changed into hot-air after the cold air heat exchange goes out from the hot-air
Mouth outflow.
5. gas-fired condensing boiler according to claim 4, it is characterised in that the heat exchanger includes that a section is rounded
Base tube, the outer surface of the base tube forms the fin that multi-turn is placed equidistant, and the inner surface of the base tube is formed with multi-turn and equidistantly sets
The screw thread or fin put.
6. gas-fired condensing boiler according to claim 5, it is characterised in that the gas-fired condensing boiler also includes burning
Device, the hot-air enters the burner and participates in burning by hot-flow flue.
7. gas-fired condensing boiler according to claim 6, it is characterised in that the gas-fired condensing boiler also includes ripple stove
Courage combustion chamber, the corrugated internal furnace combustion chamber is located at the inner barrel, and the air enters the combustion by the burner
Burn room and participate in burning, the flue gas produced after the burning water outdoor with the burning is coated on carries out heat exchange.
8. gas-fired condensing boiler according to claim 7, it is characterised in that the gas-fired condensing boiler also includes turning to
Room, the flue gas produced after burning by the reversal chamber after heat exchange by entering the heat-exchanger rig.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620769157.5U CN206235023U (en) | 2016-07-19 | 2016-07-19 | Gas-fired condensing boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620769157.5U CN206235023U (en) | 2016-07-19 | 2016-07-19 | Gas-fired condensing boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206235023U true CN206235023U (en) | 2017-06-09 |
Family
ID=58986021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620769157.5U Expired - Fee Related CN206235023U (en) | 2016-07-19 | 2016-07-19 | Gas-fired condensing boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206235023U (en) |
-
2016
- 2016-07-19 CN CN201620769157.5U patent/CN206235023U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20190719 |