CN212179223U - Condensing boiler system - Google Patents
Condensing boiler system Download PDFInfo
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- CN212179223U CN212179223U CN202020316773.1U CN202020316773U CN212179223U CN 212179223 U CN212179223 U CN 212179223U CN 202020316773 U CN202020316773 U CN 202020316773U CN 212179223 U CN212179223 U CN 212179223U
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- flue gas
- heat exchange
- heat exchanger
- boiler system
- condensing boiler
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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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Abstract
The condensing boiler system comprises a hearth, a combustor, a body heat exchanger, a chimney and a condenser, wherein the condenser comprises a plurality of heat exchange plates which are overlapped and abutted, a plurality of rows of parallel bulges are arranged on the heat exchange plates, two heat exchange plates are abutted to form a flue gas channel and a water side channel, the flue gas channel is provided with a flue gas inlet and a flue gas outlet, the body heat exchanger is communicated with the flue gas inlet, and the chimney is communicated with the flue gas outlet; the condenser is provided with a condensate pipe which is communicated with the flue gas channel. The utility model discloses can improve plate condenser's heat transfer effect, further retrieve the latent heat of the sensible heat of low temperature flue gas and vapor, heating boiler feedwater to improved condensing boiler's thermal efficiency, still it is little to have heat transfer area, compact structure, and the metal consumption is few, the little effect of occupation space.
Description
Technical Field
The utility model belongs to the boiler system field, concretely relates to condensing boiler system of fuel, gas.
Background
In a plurality of boiler systems, the flue gas condensation technology applied to a gas (oil) boiler fully recovers low-temperature sensible heat and water vapor condensation latent heat in flue gas, the water dew point temperature of the flue gas generated by taking gas such as natural gas as fuel is 55-62 ℃, and if the temperature of the flue gas is reduced to be lower than the temperature, the water vapor in the flue gas can be condensed, so that the purposes of recovering the latent heat and the low-temperature sensible heat in the flue gas are achieved.
In a gas (oil) boiler flue gas condensation hot water heating boiler heating system in the prior art, a condenser is generally a carbon steel, steel-aluminum composite finned tube or stainless steel finned tube structure; there are the following disadvantages: the reliability is poor, the carbon steel and steel-aluminum composite finned tube has poor acid condensate corrosion resistance, and the heat exchange performance is affected by dust deposition on the back flue gas side of the finned tube; heavy equipment, large resistance, large metal consumption of the finned tube, high cost of the stainless steel finned tube, and large resistance of the water side and the gas side of the finned tube.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a condensing boiler system, its condensing boiler system for adopting plate flue gas condenser as low temperature section heat exchanger to solve one or more problems that fin tubular condenser exists among the aforementioned condensing boiler system.
The scheme of the utility model is that: a condensing boiler system comprises a hearth 5, a burner 6, a body heat exchanger 4, a chimney 1 and a condenser 3;
the condenser 3 comprises a plurality of stacked and abutting heat exchange plates 31, said heat exchange plates 31 being formed with a plurality of parallel rows of bosses 311;
the two heat exchange plates are raised against each other, a flue gas channel 312 and a water side channel 314 are formed between the heat exchange plates 31, and the flue gas channel 312 is communicated with a flue gas inlet 3121 and a flue gas outlet 3122;
the body heat exchanger 4 is in communication with a flue gas inlet 3121, and the chimney 1 is in communication with a flue gas outlet 3122;
a condensate pipe 9 is arranged on the condenser 3, and the condensate pipe 9 is communicated with the flue gas channel 312.
Further, the protrusions 311 are block-shaped and arranged in a rectangular array.
Further, the protrusions 311 are equidistant from each other,
furthermore, the two heat exchange plates 31 are abutted, and the centers of the two abutted bosses 311 of adjacent plate pairs are spaced along the long side direction of the heat exchange plates 31.
Further, the spacing is 1/2 width of the protrusion 311.
Furthermore, a tubular flow channel is formed beside the abutting bulges between the two abutting heat exchange plates and is used as a smoke channel, a plate-shaped flow channel is formed between the adjacent heat exchange plate pairs and is used as a water side channel.
Furthermore, the short side of the heat exchange plate 31 is bent to form a folded edge 313, the upper surface of the folded edge 313 is flush with the upper surface of the protrusion 311, and the heat exchange plate 31 is formed by stamping a metal material.
Furthermore, after the two heat exchange plates are abutted, an inlet and an outlet of a water side channel are formed at the short sides, each pair of heat exchange plates are connected through a toothed plate 10, each toothed plate comprises a frame and a multi-tooth-shaped meshing structure, the frame of each toothed plate is used as a connecting piece to connect heat exchange and an outer frame, and the end part of each pair of heat exchange plates is fixed by a tooth gap of the multi-tooth-shaped meshing structure.
Further, including blender 8 and air-blower 7, blender 8 includes air inlet 81, circulation flue gas inlet 82 and mixing outlet 83, air inlet 82 intervenes the air, circulation flue gas inlet 82 communicates with plate condenser 3's flue gas inlet 3121, the mixing outlet communicates with air-blower 7, the export of air-blower 7 communicates with combustor 6.
Further, still include air heater 2, air heater 2 communicates with the air inlet 81 of blender 8, 8 mixing outlet 83 of blender communicate with air-blower 7, the export and the combustor 6 intercommunication of air-blower 7, air heater 2 is plate heat exchanger, air heater 2 is equipped with condenser pipe 9.
Condensing boiler system, integrate plate condenser to condensing boiler system in, beneficial effect lies in: the condensing boiler system is provided with the raised structure on the heat exchange plate of the plate-type condenser, can improve the heat exchange effect of the plate-type condenser, can further recover the sensible heat of low-temperature flue gas and the latent heat of water vapor, and heats boiler water, thereby improving the heat efficiency of the condensing boiler, and the heat exchange area is small, the structure is compact, the metal consumption is less, and the occupied space is small.
Drawings
FIG. 1 is a schematic flow chart illustrating the implementation of one embodiment of the present invention;
fig. 2 is a schematic structural diagram of a condenser core according to an embodiment of the present invention;
fig. 3 is a schematic view of a condenser flow channel structure according to an embodiment of the present invention;
in the figure:
1-a chimney; 2-a warm air device; 3-a condenser; 31-a heat exchanger plate; 311-bumps; 312-flue gas channel; 3121-flue gas inlet; 3122-a flue gas outlet; 313-folding edges; 314-water side channel; 4-a bulk heat exchanger; 5-hearth; 6-a burner; 7-a blower; 8-a mixer; 81-air inlet; 82-inlet of circulating flue gas; 83-a mixing outlet; 9-a condensate pipe; 10-toothed plate.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings and specific embodiments so that the objects, features and advantages of the present invention can be more clearly understood.
Example 1:
as shown in fig. 1 and 2, a condensing boiler system comprises a hearth 5, a burner 6, a body heat exchanger 4, a chimney 1 and a condenser 3;
the condenser 3 comprises heat exchange plates 31 which are overlapped and abutted, a plurality of rows of parallel protrusions 311 are arranged on the heat exchange plates 31, a flue gas channel 312 and a water side channel 314 are formed between the two heat exchange plates 31, the flue gas channel 312 is provided with a flue gas inlet 3121 and a flue gas outlet 3122, the body heat exchanger 4 is communicated with the flue gas inlet 3121, and the chimney 1 is communicated with the flue gas outlet 3122; the condenser 3 is provided with a condensate pipe 9, and the condensate pipe 9 is communicated with the flue gas channel 312.
Condensing boiler system in, the flue gas that the boiler burning produced is earlier through the cooling of body heat exchanger 4, but this moment, the flue gas temperature does not reach the condensation temperature of vapor, vapor is not condensed, the condensation heat of unable recovery vapor, increase condenser 3, the flue gas gets into condenser 3 once more from body heat exchanger, the flue gas is further cooled down with the help of the cold water medium in condenser 3, make its temperature reach below the condensation temperature, the vapor condensation, thereby reach the purpose of retrieving the latent heat of vapor, the latent heat of vapor transmits and makes its temperature rise for cold water, be used for the boiler to give water, thereby improve condensing boiler system's thermal efficiency, after the vapor condensation, from condenser 3 of discharging in condensate pipe 9.
As shown in fig. 2, the protrusions 311 on the heat exchange plate 31 are block-shaped, the protrusions 311 are arranged in a rectangular array with equal distance, the short sides of the heat exchange plate 31 are bent to form folded edges 313, and the upper surfaces of the folded edges 313 are flush with the upper surfaces of the protrusions 311; after the two heat exchange plates 31 are abutted, the short sides form the inlet and outlet of the water side channel 314, each pair of heat exchange plates 31 are connected through the toothed plate, so that the superposed heat exchange plates 31 form a heat exchange core body, meanwhile, the toothed plate 10 forms a connecting piece between the heat exchange core body 11 and an outer frame, meanwhile, the toothed plate 10 separates the flue gas channel 312 and the water side channel 314, two media of flue gas and water are ensured to respectively enter respective channels, the wall type heat exchange is carried out, the mixing is avoided, and the purposes of reducing the temperature of the flue gas and increasing the temperature of water are finally realized.
As shown in fig. 2 and fig. 3, the two heat exchange plates 31 are mutually abutted, and the centers of the two abutted bosses 311 are spaced along the long side direction of the heat exchange plates 31; in the arrangement mode, a tubular flow passage form and a plate-shaped flow passage form are formed between the two heat exchange plates 31, the tubular flow passage form is used as a flue gas passage 312, the resistance is small, the plate-shaped flow passage form is used as a water side passage 314, and the changeable flow passage section can strengthen the turbulent flow at the water side and improve the heat exchange effect; the optimum spacing is 1/2 the width of the protrusions 311.
The heat exchange plate 31 is made of metal, and may be specifically stainless steel, ND steel, or the like.
As shown in FIG. 1, the condensing boiler system further comprises a mixer 8 and a blower 7, wherein the mixer 8 comprises an air inlet 81, a circulating flue gas inlet 82 and a mixing outlet 83, the air inlet 82 is used for introducing air, and the circulating flue gas inlet 82 is connected with a plate condenser3, a flue gas inlet 3121 is communicated, a mixing outlet is communicated with a blower 7, and an outlet of the blower 7 is communicated with a burner 6; the loop forms a flue gas recirculation system, a part of flue gas entering the condenser 3 enters the mixer 8 through the circulating flue gas inlet 82 to be mixed with air entering from the air inlet 81, flows out of the mixing outlet 83, enters the combustor 6 after entering the blower 7, realizes the recirculation of the flue gas, and the recirculation of the flue gas can reduce the combustion temperature and the concentration of oxygen in the combustion process, and can reduce 50% -85% of NOxDischarging;
as shown in fig. 1, the condensing boiler system further comprises a fan heater 2, the fan heater 2 is communicated with an air inlet 81 of a mixer 8, a mixing outlet 83 of the mixer 8 is communicated with a blower 7, an outlet of the blower 7 is communicated with a burner 6, the fan heater 2 is a plate heat exchanger, and the fan heater 2 is provided with a water condensing pipe 9; in the north, the outdoor air temperature is extremely low, 25 ℃ below zero to 0 ℃, after the flue gas used for recycling is mixed with the cold air, condensate water can be separated out when the mixed air temperature is lower than 17 ℃ to 29 ℃, corrosion generated by the acid condensate water has adverse effects on the service life of a condensing heat exchanger, a fan, an air duct and a combustor, the air needs to be heated, the plate-type air heater 2 is added, the cold air is heated by utilizing the flue gas, the waste heat of the flue gas is further recycled, an additional heat source is not needed, and the energy consumption is reduced.
Example 2:
a condensing boiler system comprises a hearth 5, a burner 6, a body heat exchanger 4, a chimney 1 and a condenser 3;
the condenser 3 comprises a plurality of stacked and abutting heat exchange plates 31, said heat exchange plates 31 being formed with a plurality of parallel rows of bosses 311;
the two heat exchange plates are raised against each other, a flue gas channel 312 and a water side channel 314 are formed between the heat exchange plates 31, and the flue gas channel 312 is communicated with a flue gas inlet 3121 and a flue gas outlet 3122;
the body heat exchanger 4 is in communication with a flue gas inlet 3121, and the chimney 1 is in communication with a flue gas outlet 3122;
a condensate pipe 9 is arranged on the condenser 3, and the condensate pipe 9 is communicated with the flue gas channel 312.
Example 3:
more preferably, the protrusions 311 are block-shaped and arranged in a rectangular array.
Example 4:
more preferably than the above embodiment, the protrusions 311 are equidistant from each other.
Example 5:
more preferably, compared with the above embodiment, the two heat exchange plates 31 are butted against each other, and the centers of the two butted protrusions 311 of the adjacent plate pairs are spaced along the long side direction of the heat exchange plates 31.
Example 6:
more preferably, compared with the above embodiment, the two heat exchange plates 31 are butted against each other, and the centers of the two butted protrusions 311 of the adjacent plate pairs are spaced along the long side direction of the heat exchange plates 31, and the spacing is 1/2 width of the protrusions 311.
Example 7:
more preferably, compared with the above embodiment, a tubular flow channel is formed beside the abutting protrusions between the two abutting heat exchange plates as a flue gas channel, a plate-shaped flow channel is formed between the adjacent heat exchange plate pairs, and the plate-shaped flow channel is used as a water side channel.
Example 8:
more preferably, compared with the above embodiment, the short side of the heat exchange plate 31 is bent to form a folded edge 313, the upper surface of the folded edge 313 is flush with the upper surface of the protrusion 311, and the heat exchange plate 31 is formed by stamping a metal material.
Example 9:
more preferably, after the two heat exchange plates are abutted, an inlet and an outlet of a water side channel are formed at the short sides, each pair of heat exchange plates are connected through a toothed plate 10, the toothed plate comprises a frame and a multi-tooth-shaped meshing structure, the frame of the toothed plate is used as a connecting piece to connect a heat exchange frame and an outer frame, and the end of each pair of heat exchange plates is fixed by a tooth gap of the multi-tooth-shaped meshing structure.
Example 10:
more preferably than the above embodiment, the mixer 8 and the blower 7 are included, the mixer 8 includes an air inlet 81, a circulating flue gas inlet 82 and a mixing outlet 83, the air inlet 82 is introduced with air, the circulating flue gas inlet 82 is communicated with the flue gas inlet 3121 of the plate condenser 3, the mixing outlet is communicated with the blower 7, and the outlet of the blower 7 is communicated with the burner 6.
Example 11:
more preferably, the air heater further comprises a fan heater 2, the fan heater 2 is communicated with an air inlet 81 of a mixer 8, a mixing outlet 83 of the mixer 8 is communicated with a blower 7, an outlet of the blower 7 is communicated with a burner 6, the fan heater 2 is a plate heat exchanger, and the fan heater 2 is provided with a water condensation pipe 9.
It should be noted that, in the above embodiments, the air inlet/outlet port may be replaced by an air inlet/outlet channel, or the like.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present disclosure and not for limiting the same; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will understand that: modifications to the embodiments of the disclosure or equivalent substitutions of parts of the technical features may still be made; without departing from the spirit of the present disclosure, it is intended to cover all such modifications as fall within the scope of the claimed subject matter.
Claims (10)
1. A condensing boiler system comprises a hearth (5), a burner (6), a body heat exchanger (4) and a chimney (1), and is characterized by further comprising a condenser (3);
-said condenser (3) comprises a plurality of stacked and abutting heat exchanger plates (31), said heat exchanger plates (31) being formed with a plurality of parallel rows of bosses (311);
-the two heat exchange plates are mutually raised and butted, a flue gas channel (312) and a water side channel (314) are formed between the heat exchange plates (31), and the flue gas channel (312) is communicated with a flue gas inlet (3121) and a flue gas outlet (3122);
-the body heat exchanger (4) is in communication with a flue gas inlet (3121), the chimney (1) is in communication with a flue gas outlet (3122);
-a condensate pipe (9) is arranged on the condenser (3), and the condensate pipe (9) is communicated with the flue gas channel (312).
2. A condensing boiler system according to claim 1, characterized in that said protrusions (311) are block-shaped and arranged in a rectangular array.
3. A condensing boiler system according to claim 2, characterized in that said protrusions (311) are equidistant from each other.
4. A condensing boiler system according to any one of claims 1-3, characterized in that said two heat exchanger plates (31) are mutually abutting, and the centers of the mutually abutting projections (311) of adjacent plate pairs are spaced along the long sides of the heat exchanger plates (31).
5. A condensing boiler system according to claim 4, characterized in that said spacing is 1/2 width of the protrusion (311).
6. A condensing boiler system according to any one of claims 1-3, characterized in that the abutting convex sides between two abutting heat exchanger plates form a tubular flow channel as flue gas channel, a plate-like flow channel is formed between adjacent pairs of heat exchanger plates, and the plate-like flow channel is used as water side channel.
7. A condensing boiler system according to any of claims 1-3, characterized in that the short sides of the heat exchanger plates (31) are bent to form folds (313), the upper surface of the folds (313) being flush with the upper surface of the protrusions (311); the heat exchange plate (31) is formed by stamping metal materials.
8. A condensing boiler system according to any one of claims 1 to 3, characterized in that after two heat exchange plates are abutted, the short sides form the inlet and outlet of the water side channel, each pair of heat exchange plates are connected through a toothed plate (10), the toothed plate comprises a frame and a multi-tooth meshing structure, the frame of the toothed plate is used as a connecting piece to connect the heat exchange and outer frames, and the end of each pair of heat exchange plates is fixed by the tooth gap of the multi-tooth meshing structure.
9. A condensing boiler system according to any of claims 1 to 3, characterized by comprising a mixer (8) and a blower (7), said mixer (8) comprising an air inlet (81), a circulating flue gas inlet (82) and a mixing outlet (83), said air inlet (81) being interposed in air, said circulating flue gas inlet (82) being in communication with the flue gas inlet (3121) of the plate condenser (3), said mixing outlet being in communication with the blower (7), the outlet of said blower (7) being in communication with the burner (6).
10. A condensing boiler system according to any of claims 1-3, characterized by further comprising a fan heater (2), said fan heater (2) being in communication with an air inlet (81) of a mixer (8), said mixer (8) having a mixing outlet (83) in communication with a blower (7), said blower (7) having an outlet in communication with a burner (6), said fan heater (2) being a plate heat exchanger, said fan heater (2) being provided with a water condensation pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020316773.1U CN212179223U (en) | 2020-03-15 | 2020-03-15 | Condensing boiler system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020316773.1U CN212179223U (en) | 2020-03-15 | 2020-03-15 | Condensing boiler system |
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| CN212179223U true CN212179223U (en) | 2020-12-18 |
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| CN202020316773.1U Active CN212179223U (en) | 2020-03-15 | 2020-03-15 | Condensing boiler system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115177971A (en) * | 2022-06-16 | 2022-10-14 | 湖北科林博伦新材料有限公司 | Novel high-efficient cooling continuous crystallization machine |
-
2020
- 2020-03-15 CN CN202020316773.1U patent/CN212179223U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115177971A (en) * | 2022-06-16 | 2022-10-14 | 湖北科林博伦新材料有限公司 | Novel high-efficient cooling continuous crystallization machine |
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