CN216667977U - High-efficient gas heating boiler - Google Patents
High-efficient gas heating boiler Download PDFInfo
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- CN216667977U CN216667977U CN202120531544.6U CN202120531544U CN216667977U CN 216667977 U CN216667977 U CN 216667977U CN 202120531544 U CN202120531544 U CN 202120531544U CN 216667977 U CN216667977 U CN 216667977U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model relates to a high-efficiency gas heating boiler, which comprises a combustor and a gas-gas heat exchanger; the combustor is provided with a nozzle, a glow plug, a combustor air inlet, an air vent, a spiral channel, a premixing cavity and a hearth; the gas-gas heat exchanger is provided with an exhaust gas inlet cavity, a gas-gas heat exchange cavity, a high-efficiency gas-gas heat exchange unit, an exhaust gas outlet cavity, a waste gas outlet, a gas-gas heat exchange gas inlet cavity, a gas-gas heat exchange gas outlet cavity and an exhaust overflow port. The boiler can effectively and accurately control the proportion of fuel and air; the flame is ignited rapidly during the heating process, and the fuel can be completely combusted. The high-efficiency heat exchange unit is used for heating gas, and the device has the characteristics of high heat efficiency, quick temperature rise, less exhaust pollution and the like.
Description
Technical Field
The utility model belongs to the technical field of heating boilers, and particularly relates to a high-efficiency gas heating boiler.
Background
The gas heating boiler is a device which mixes air and fuel in a proper ratio to burn and heats gas by the generated heat energy. The gas heating boiler has many types, but most of the existing boiler products have the combustion mode that fuel is directly soaked on a fine metal grid, the fuel on the surface of the boiler is ignited by high-heat resistance wires during initial ignition, and after local combustion, the flame spreads all over the metal grid around along with entering fresh air to form hearth flame. This combustion method is slow in ignition, uneven in mixing, and poor in fuel economy because a large amount of black smoke is formed in the initial stage of combustion. In addition, the combustion chamber and the heat exchange unit of the existing gas heating boiler have simple structures, small heat exchange area, low heat exchange efficiency and slow gas temperature rise.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an efficient gas heating boiler, which can effectively and accurately control the proportion of fuel and air; the flame is ignited rapidly during the heating process, and the fuel can be completely combusted. The high-efficiency heat exchange unit is used for heating gas, and the device has the characteristics of high heat efficiency, quick temperature rise, less exhaust pollution and the like.
The utility model provides a high-efficiency gas heating boiler, which comprises a combustor and a gas-gas heat exchanger;
the combustor is provided with a nozzle, a glow plug, a combustor air inlet, an air vent, a spiral channel, a premixing cavity and a hearth; the nozzle is connected with an external oil pump and is used for spraying oil mist; the glow plug is used for igniting oil mist; the gas inlet of the combustor is connected with an external combustion fan and used for injecting gas; the premixing cavity is used for mixing oil mist and gas; the hearth is used for burning fuel;
wherein, the air inlet of the burner is connected with one end of the vent hole, and the other end of the burner is connected with the spiral channel; the spiral channel is connected with the premixing cavity through a channel; the premixing cavity is connected with the hearth; the hearth is communicated with the gas-gas heat exchanger;
wherein, a vent hole and a spiral channel are arranged in the burner; in practical application, fresh air can enter the premixing cavity after being rapidly dispersed through the vent hole and the spiral channel, so that gas and oil mist and the like can be fully mixed.
The gas-gas heat exchanger is provided with an exhaust gas inlet cavity, a gas-gas heat exchange cavity, a high-efficiency gas-gas heat exchange unit, an exhaust gas outlet cavity, a waste gas outlet, a gas-gas heat exchange gas inlet cavity, a gas-gas heat exchange gas outlet cavity and an exhaust overflow port.
The exhaust gas inlet cavity is connected with the gas-gas heat exchange cavity, and a high-efficiency gas-gas heat exchange unit is arranged in the gas-gas heat exchange cavity; the other end of the exhaust air outlet cavity is communicated with an exhaust air outlet; one end of the gas-gas heat exchange air inlet is connected with an external heat exchange fan, and the other end of the gas-gas heat exchange air inlet is connected with a gas-gas heat exchange air inlet cavity; one end of the gas-gas heat exchange gas outlet is connected with an external gas circulation heat absorption device through a pipeline, and the other end of the gas-gas heat exchange gas outlet is connected with the gas-gas heat exchange gas outlet cavity.
Wherein the vent hole is preferably a kidney-shaped vent hole; the ventilation can be further increased.
The utility model further provides that a flame stabilizing disc is arranged in the burner, is positioned behind the glow plug and is fixed in the hearth.
Wherein, a rotational flow channel (34), a direct current channel (35) and blades (33) are arranged in the flame stabilizing disc (10).
The middle channel of the flame stabilizing disc is a direct current channel, and the upwarping part of the front part of the flame stabilizing disc blade and the straight part of the rear part of the other blade form a channel so as to form rotary airflow.
The nozzle is connected with an external oil pipe and an oil pump; the glow plug is connected with an external wire harness and a controller; the air inlet of the combustor is connected with an external combustion fan; in actual operation, firstly, the glow plug is added, the external oil pump sucks fuel from an oil pipe and generates high pressure, oil mist is sprayed out through a fine hole at the front end of the nozzle 4, and the oil mist contacts with the high-temperature glow plug to start ignition; a combustion fan connected with an air inlet of the combustor starts to work, and air is introduced; the gas and the oil mist form oil-gas mixed gas in the premixing cavity under the dispersion of the vent holes and the spiral channel; then the stable flame plate is arranged in the hearth for stable and efficient combustion.
The high-efficiency heating boiler provided by the utility model adopts a mode that the glow plug ignites high-pressure injection fuel oil, the vent hole and the spiral channel air inlet to support combustion, so that the flame is quickly ignited and is completely combusted. The furnace bottom with the fins has fast heat transfer and high efficiency to the gas-liquid heat exchange cavity with the spiral fins.
The utility model further provides that the high-efficiency gas-gas heat exchange unit is of a folded cylindrical structure.
The high-efficiency gas-gas heat exchange unit is provided with an inner side channel and an outer side channel; the inner channel is communicated with high-temperature exhaust gas, and the outer channel is communicated with heat exchange gas; and the exhaust air outlet cavity is connected with the inner side channel of the high-efficiency air-gas heat exchange unit.
In the high-efficiency gas-gas heat exchange unit, the heat exchange areas of the inner side channel and the outer side channel are isosceles triangles, and two side walls of each isosceles triangle are heat exchange boundaries.
Preferably, the high-efficiency gas-gas heat exchange unit is made by folding high-temperature-resistant and corrosion-resistant plates.
In the gas-gas heat exchanger, the efficient gas-gas heat exchange unit is adopted and is made by folding high-temperature-resistant and corrosion-resistant plates, so that more fins can be folded, and the heat exchange area is greatly increased. The heat exchange area formed by folding the inner side channel and the outer side channel is in an isosceles triangle shape, two side walls of the isosceles triangle are heat exchange boundaries, high-temperature exhaust and heat exchange gas directly exchange heat through the wall surface, and the heat exchange efficiency is high.
The utility model further provides that the gas-gas heat exchanger is also provided with a supporting plate for fixing the high-efficiency gas-gas heat exchange unit.
The structure of the supporting plate is completely matched with the shape of the isosceles triangle folded by the high-efficiency gas-gas heat exchange unit.
The utility model further provides that a partition plate is arranged between the exhaust air inlet cavity and the exhaust air outlet cavity.
The utility model further provides that the exhaust overflow ports are positioned at two ends of the gas-gas heat exchanger.
The gas-gas heat exchanger of the high-efficiency heating boiler provided by the utility model adopts the high-efficiency gas-gas heat exchange unit, is made by folding high-temperature-resistant and corrosion-resistant plates, can be folded to form more fins, and greatly increases the heat exchange area. The heat exchange area formed by folding the inner side channel and the outer side channel is in an isosceles triangle shape, two side walls of the isosceles triangle are heat exchange boundaries, high-temperature exhaust and heat exchange gas directly exchange heat through the wall surface, and the heat exchange efficiency is high.
The partition plate is arranged between the exhaust gas inlet cavity and the exhaust gas outlet cavity of the gas-gas heat exchanger of the high-efficiency heating boiler, high-temperature exhaust gas must firstly enter the exhaust gas inlet cavity and then enter the exhaust gas outlet cavity through the inner side channel of the high-efficiency gas-gas heat exchange unit, and the high-temperature exhaust stroke is increased. And the gas-gas heat exchange air inlet and the exhaust air inlet are positioned at two ends of the gas-gas heat exchanger, and heat exchange gas and high temperature flow in opposite directions, so that heat exchange is fully performed, and the heat exchange efficiency is improved.
Drawings
FIG. 1 is a structural view of embodiment 1 of the present invention;
FIG. 2 is a sectional view 1 of example 1 of the present invention;
FIG. 3 is a sectional view 2 of example 1 of the present invention;
FIG. 4 is a structural view of embodiment 2 of the present invention;
FIG. 5 is a sectional view of example 2 of the present invention, FIG. 1;
FIG. 6 is a sectional view 2 of embodiment 2 of the present invention;
FIG. 7 is a view of the vent structure of the present invention;
FIG. 8 is a view of the spiral channel structure of the present invention;
FIG. 9 is a diagram of a flame holding tray of the present invention;
FIG. 10 is a schematic diagram of a high efficiency gas-to-gas heat exchange unit of the present invention;
FIG. 11 is a view of the construction of the support plate of the present invention;
in the figure: 1. a burner; 2. a gas-gas heat exchanger; 3. a nozzle; 4. a glow plug; 5. a burner air inlet; 6. a vent hole; 7. a spiral channel; 8. a combustor intake passage; 9. a premix chamber; 10. a flame stabilizing disc; 11. a hearth; 12. an exhaust gas inlet chamber; 13. the inner wall of the gas-gas heat exchanger; 14. an exhaust gas inlet; 15. a gas-gas heat exchange cavity; 16. a high-efficiency gas-gas heat exchange unit; 17. An inboard channel; 18. an outboard channel; 19. an exhaust gas outlet; 20. an exhaust outlet cavity; 21. an exhaust gas passage; 22. a waste gas outlet; 23. a support plate; 24. an end plate of the gas-gas heat exchanger; 25. An exhaust overflow channel; 26. an exhaust overflow port; 27. a gas-gas heat exchange gas inlet; 28. the gas-gas heat exchange air inlet cavity; 29. a gas-gas heat exchange gas outlet cavity; 30. a gas-gas heat exchange gas outlet; 31. the outer wall of the gas-gas heat exchanger; 32. a partition plate; 33. a blade; 34. a swirling flow passage; 35. a direct current channel.
Detailed Description
The following examples are intended to illustrate the utility model, but are not intended to limit the scope of the utility model.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
Example 1
The embodiment provides a high-efficiency gas heating boiler which mainly comprises a combustor 1 and a gas-gas heat exchanger 2. The combustor 1 is provided with a nozzle 3, a glow plug 4, a combustor air inlet 5, a vent hole 6, a spiral channel 7, a premixing cavity 9, a flame stabilizing disc 10 and a hearth 11. The gas-gas heat exchanger 2 is provided with an exhaust gas inlet cavity 12, an exhaust gas inlet 14, a gas-gas heat exchange cavity 15, a high-efficiency gas-gas heat exchange unit 16, an exhaust gas outlet 19, an exhaust gas outlet cavity 20, a waste gas channel 21, a waste gas outlet 22, a gas-gas heat exchange gas inlet 27, a gas-gas heat exchange gas inlet cavity 28, a gas-gas heat exchange gas outlet 30, a gas-gas heat exchange gas outlet cavity 29, an exhaust overflow port 26 and a support plate 23. The nozzle 3 is connected with an external oil pipe and an oil pump; the glow plug 4 is connected with an external wire harness and a controller; the combustor air inlet 5 is connected with an external combustion fan; one end of the vent hole 6 is connected with the air inlet 5 of the burner, and the other end is connected with the spiral channel 7; the spiral channel 7 is communicated with the premixing cavity 9 through a combustor air inlet channel 8. The premixing cavity 9 is connected with a hearth 11; the flame stabilizing disc 10 is positioned behind the glow plug 4 and fixed in the hearth 11; the hearth 11 is communicated with an exhaust gas inlet cavity 12; the exhaust air inlet cavity 12 is provided with an exhaust air inlet 14 on the inner wall 13 of the gas-gas heat exchanger and is connected with a gas-gas heat exchange cavity 15; the gas-gas heat exchange cavity 15 is internally provided with a high-efficiency gas-gas heat exchange unit 16; the high-efficiency gas-gas heat exchange unit 16 is provided with an inner channel 17 and an outer channel 18, the inner channel 17 is communicated with high-temperature exhaust gas, and the outer channel 18 is communicated with heat exchange gas; the exhaust air outlet cavity 20 is provided with an exhaust air outlet 19, and the exhaust air outlet cavity 20 is connected with the channel 17 on the inner side of the high-efficiency gas-gas heat exchange unit 16; the other end of the exhaust air outlet cavity 20 is connected with a waste gas channel 21, and the waste gas channel 21 is provided with a waste gas outlet 22; one end of the gas-gas heat exchange air inlet 27 is connected with an external heat exchange fan, and the other end is connected with a gas-gas heat exchange air inlet cavity 28; one end of the gas-gas heat exchange gas outlet 30 is connected with an external gas circulation heat absorption device through a pipeline, and the other end of the gas-gas heat exchange gas outlet is connected with the gas-gas heat exchange gas outlet cavity 29; the exhaust overflow ports 26 are positioned at two ends of the gas-gas heat exchanger 2; the supporting plate 23 is used for fixing the high-efficiency gas-gas heat exchange unit 16;
in this embodiment: the combustor 1 is provided with a vent hole 6 and a spiral channel 7, and fresh air enters a premixing cavity 9 after being dispersed through the vent hole 6 and the spiral channel 7.
Wherein, the vent hole 6 is a kidney-shaped vent hole.
In this embodiment: the high-efficiency gas-gas heat exchange unit 16 is made by folding high-temperature-resistant and corrosion-resistant plates.
In this embodiment: the heat exchange areas of the high-efficiency gas-gas heat exchange unit 16, which are folded to form the inner side channel 17 and the outer side channel 18, are isosceles triangles, and two side walls of each isosceles triangle are heat exchange boundaries; the inner channel 17 is communicated with high-temperature exhaust gas, and the outer channel 18 is communicated with heat exchange gas.
In this embodiment: a partition plate 32 is arranged between the exhaust gas inlet cavity 12 and the exhaust gas outlet cavity 20, and high-temperature exhaust gas must enter the exhaust gas inlet cavity 12 firstly and then enter the exhaust gas outlet cavity 20 through the exhaust gas inlet 14 and the exhaust gas outlet 19 from the inner side channel 17 of the high-efficiency gas-gas heat exchange unit 16.
In this embodiment: the gas-gas heat exchange gas inlet 27 and the exhaust gas inlet 14 are located at both ends of the gas-gas heat exchanger 2.
The working principle of the high-efficiency heating boiler provided by the embodiment is as follows: when the high-efficiency heating boiler works, under the control of an external controller, the system firstly starts to heat the glow plug 4, an external oil pump sucks fuel from an oil pipe to generate high pressure, oil mist is sprayed out through a fine hole at the front end of the nozzle 3, and the oil mist contacts with the high-temperature glow plug 4 to start to catch fire. Meanwhile, a combustion fan connected with the combustor air inlet 5 is started to send uniform air into the premixing cavity 9 through the air vent 6, the spiral channel 7 and the combustor air inlet channel 8, oil-gas mixed gas is formed with oil mist, and stable combustion is started in the hearth 11 under the action of the swirling flow channel 34, the direct flow channel 35 and the blades 33 of the flame stabilizing disc 10. High-temperature exhaust gas generated by combustion enters the exhaust gas inlet cavity 12 through the hearth 11. The partition plate 32 separates the exhaust gas inlet cavity 12 from the exhaust gas outlet cavity 20, and exhaust gas must enter the gas-gas heat exchange cavity 15 through the exhaust gas inlet on the inner wall 13 of the gas-gas heat exchanger in the exhaust gas inlet cavity 12 to perform gas-gas heat exchange. The heat exchange gas enters the gas-gas heat exchange air inlet cavity 28 through the gas-gas heat exchange air inlet 27 via an external heat exchange fan. The gas in the gas-gas heat exchange gas inlet cavity 28 enters the outer channel 18 formed by the high-efficiency gas-gas heat exchange unit 16 and the outer wall 31 of the gas-gas heat exchanger and the high-temperature exhaust gas in the inner channel 17 formed by the high-efficiency gas-gas heat exchange unit 16 and the inner wall 13 of the gas-gas heat exchanger for heat exchange. After the temperature of the outside channel 18 is raised by heat exchange, the gas enters the gas-gas heat exchange gas outlet cavity 29 from the outside channel 18 and enters the external gas circulation heat absorption device from the gas-gas heat exchange gas outlet 30 to complete heat exchange. The high-temperature exhaust in the inner channel 17 is subjected to heat exchange, then the temperature is reduced, the high-temperature exhaust enters the exhaust outlet cavity 20 from the exhaust outlet 19, and then the high-temperature exhaust is discharged out of the machine from the exhaust channel 21 through the exhaust outlet 22. In order to further isolate high-temperature exhaust gas which is caused by brazing cracks between two end faces of the gas-gas heat exchanger 2 and two ends of the high-efficiency gas-gas heat exchange unit 16 and possibly caused by high-strength vibration damage of the boiler, the two ends of the gas-gas heat exchange are provided with an exhaust overflow channel 25 and an exhaust overflow port 26, and the high-temperature exhaust gas overflowing due to the cracks is discharged out of the boiler through the overflow channel 25 and the exhaust overflow port 26. High temperature exhaust carries out the heat transfer with heat transfer gas via the high-efficient gas heat transfer unit 16 of folding formation, and heat transfer area is big, and gas heat transfer air inlet 27 and exhaust air inlet 12 are located the both ends of gas heat exchanger 2 simultaneously, and heat transfer gas and high temperature exhaust flow in opposite directions, fully carry out the heat transfer, have improved heat exchange efficiency.
Example 2
The embodiment provides a high-efficiency gas heating boiler which mainly comprises a combustor 1 and a gas-gas heat exchanger 2. The combustor 1 is provided with a nozzle 3, a glow plug 4, a combustor air inlet 5, a vent hole 6, a spiral channel 7, a premixing cavity 9, a flame stabilizing disc 10 and a hearth 11. The gas-gas heat exchanger 2 is provided with an exhaust gas inlet cavity 12, a gas-gas heat exchange cavity 15, a high-efficiency gas-gas heat exchange unit 16, an exhaust gas outlet cavity 20, a waste gas outlet 22, a gas-gas heat exchange gas inlet 27, a gas-gas heat exchange gas inlet cavity 28, a gas-gas heat exchange gas outlet 30, a gas-gas heat exchange gas outlet cavity 29, an exhaust overflow port 26 and a support plate 23. The nozzle 3 is connected with an external oil pipe and an oil pump; the glow plug 4 is connected with an external wire harness and a controller; the combustor air inlet 5 is connected with an external combustion fan; one end of the vent hole 6 is connected with the air inlet 5 of the burner, and the other end is connected with the spiral channel 7; the spiral channel 7 is communicated with the premixing cavity 9 through a combustor air inlet channel 8. The premixing cavity 9 is connected with a hearth 11; the flame stabilizing disc 10 is positioned behind the glow plug 4 and is fixed in the hearth 11; the hearth 11 is communicated with an exhaust gas inlet cavity 12; the exhaust gas inlet cavity 12 is connected with a gas-gas heat exchange cavity 15; the gas-gas heat exchange cavity 15 is internally provided with a high-efficiency gas-gas heat exchange unit 16; the high-efficiency gas-gas heat exchange unit 16 is provided with an inner channel 17 and an outer channel 18, the inner channel 17 is communicated with high-temperature exhaust gas, and the outer channel 18 is communicated with heat exchange gas; the exhaust air outlet cavity 20 is connected with the inner channel 17 of the high-efficiency air-gas heat exchange unit 16; the other end of the exhaust outlet cavity 20 is connected with a waste gas outlet 22; one end of the gas-gas heat exchange air inlet 27 is connected with an external heat exchange fan, and the other end is connected with a gas-gas heat exchange air inlet cavity 28; one end of the gas-gas heat exchange gas outlet 30 is connected with an external gas circulation heat absorption device through a pipeline, and the other end of the gas-gas heat exchange gas outlet is connected with the gas-gas heat exchange gas outlet cavity 29; the exhaust overflow ports 26 are positioned at two ends of the gas-gas heat exchanger 2; the supporting plate 23 is used for fixing the high-efficiency gas-gas heat exchange unit 16;
in this embodiment: the combustor 1 is provided with a vent hole 6 and a spiral channel 7, and fresh air enters a premixing cavity 9 after being dispersed through the vent hole 6 and the spiral channel 7.
Wherein, the vent hole 6 is a kidney-shaped vent hole.
In this embodiment: the high-efficiency gas-gas heat exchange unit 16 is made by folding high-temperature-resistant and corrosion-resistant plates.
In this embodiment: the heat exchange areas of the high-efficiency gas-gas heat exchange unit 16, which are folded to form the inner side channel 17 and the outer side channel 18, are isosceles triangles, and two side walls of each isosceles triangle are heat exchange boundaries; the inner channel 17 is communicated with high-temperature exhaust gas, and the outer channel 18 is communicated with heat exchange gas.
The working principle of the high-efficiency heating boiler provided by the embodiment is as follows: when the high-efficiency heating boiler works, under the control of an external controller, the system firstly starts to heat the glow plug 4, an external oil pump sucks fuel from an oil pipe to generate high pressure, oil mist is sprayed out through a fine hole at the front end of the nozzle 3, and the oil mist contacts with the high-temperature glow plug 4 to start to catch fire. Meanwhile, a combustion fan connected with the combustor air inlet 5 is started to feed uniform air into the premixing cavity 9 through the kidney-shaped vent hole, the spiral channel 7 and the combustor air inlet channel 8, the uniform air and the oil mist form an oil-gas mixed gas, and stable combustion is started in the hearth 11 under the action of the swirl channel 34, the direct current channel 35 and the blades 33 of the flame stabilizing disc 10. High-temperature exhaust gas generated by combustion enters the gas-gas heat exchange cavity 15 through the exhaust gas inlet cavity 12 from the bottom of the hearth 11 to perform gas-gas heat exchange. The heat exchange gas enters the gas-gas heat exchange air inlet cavity 28 through the gas-gas heat exchange air inlet 27 via an external heat exchange fan. The gas in the gas-gas heat exchange gas inlet cavity 28 enters the outer channel 18 formed by the high-efficiency gas-gas heat exchange unit 16 and the outer wall 31 of the gas-gas heat exchanger and the high-temperature exhaust gas in the inner channel 17 formed by the high-efficiency gas-gas heat exchange unit 16 and the outer wall of the hearth 11 for heat exchange. After the temperature of the outer channel 18 is raised through heat exchange, the gas enters the gas-gas heat exchange gas outlet cavity 29 from the outer channel 18 and enters the external gas circulation heat absorption device through the gas-gas heat exchange gas outlet 30 to complete heat exchange. The high-temperature exhaust in the inner channel 17 is subjected to heat exchange, then the temperature is reduced, and the high-temperature exhaust enters the exhaust air outlet cavity 20 and is exhausted out of the machine through the exhaust air outlet 22. In order to further isolate high-temperature exhaust gas which is caused by brazing cracks between two end faces of the gas-gas heat exchanger 2 and two ends of the high-efficiency gas-gas heat exchange unit 16 and possibly caused by high-strength vibration damage of the boiler, the two ends of the gas-gas heat exchange are provided with an exhaust overflow channel 25 and an exhaust overflow port 26, and the high-temperature exhaust gas overflowing due to the cracks is discharged out of the boiler through the overflow channel 25 and the exhaust overflow port 26. High-temperature exhaust carries out the heat transfer with heat transfer gas through the high-efficient gas heat transfer unit 16 that the folding formed, and heat transfer area is big, has improved heat transfer efficiency.
In conclusion, the efficient gas heating boiler has the characteristics of large heat exchange area, long heat exchange stroke, high heat exchange efficiency and reasonable structure.
Although the utility model has been described in detail hereinabove by way of general description, specific embodiments and experiments, it will be apparent to those skilled in the art that many modifications and improvements can be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (10)
1. A high-efficiency gas heating boiler is characterized by comprising a combustor (1) and a gas-gas heat exchanger (2);
the burner (1) is provided with a nozzle (3), a glow plug (4), a burner air inlet (5), a vent hole (6), a spiral channel (7), a premixing cavity (9) and a hearth (11); the nozzle (3) is connected with an external oil pump and is used for spraying oil mist; the glow plug (4) is used for igniting oil mist; the combustor air inlet (5) is connected with an external combustion fan and used for injecting gas; the premixing cavity (9) is used for mixing oil mist and gas; the hearth (11) is used for burning fuel;
wherein the gas inlet (5) of the burner is connected with one end of the vent hole (6), and the other end of the gas inlet is connected with the spiral channel (7); the spiral channel (7) is connected with the premixing cavity (9) through a channel; the premixing cavity (9) is connected with a hearth (11); the hearth (11) is communicated with the gas-gas heat exchanger (2);
the gas-gas heat exchanger (2) is provided with an exhaust gas inlet cavity (12), a gas-gas heat exchange cavity (15), a high-efficiency gas-gas heat exchange unit (16), an exhaust gas outlet cavity (20), a waste gas outlet (22), a gas-gas heat exchange gas inlet (27), a gas-gas heat exchange gas inlet cavity (28), a gas-gas heat exchange gas outlet (30), a gas-gas heat exchange gas outlet cavity (29) and an exhaust overflow port (26);
the exhaust and air inlet cavity (12) is connected with an air-air heat exchange cavity (15), and a high-efficiency air-air heat exchange unit (16) is arranged in the air-air heat exchange cavity (15); the other end of the exhaust outlet cavity (20) is communicated with a waste gas outlet (22); one end of the gas-gas heat exchange air inlet (27) is connected with an external heat exchange fan, and the other end of the gas-gas heat exchange air inlet is connected with a gas-gas heat exchange air inlet cavity (28); one end of the gas-gas heat exchange gas outlet (30) is connected with an external gas circulation heat absorption device through a pipeline, and the other end of the gas-gas heat exchange gas outlet is connected with the gas-gas heat exchange gas outlet cavity (29).
2. A high efficiency gas heating boiler according to claim 1, characterized in that a flame stabilizing disc (10) is arranged in the burner (1), said flame stabilizing disc (10) is located behind the glow plug (4) and fixed in the furnace (11).
3. A high efficiency gas heating boiler according to claim 2, characterized in that said flame stabilizing disc (10) is provided with swirl passages (34), straight flow passages (35) and vanes (33).
4. A high efficiency gas heated boiler according to any of the claims 1 to 3, characterized in that the high efficiency gas heat exchange unit (16) is of folded cylindrical structure.
5. A high efficiency gas heated boiler according to claim 4, characterized in that the high efficiency gas heat exchange unit (16) is provided with an inner channel (17) and an outer channel (18); the inner channel (17) is communicated with high-temperature exhaust gas, and the outer channel (18) is communicated with heat exchange gas; the exhaust air outlet cavity (20) is connected with an inner side channel (17) of the high-efficiency air-gas heat exchange unit (16).
6. A high efficiency gas heating boiler in accordance with claim 5, characterized by, that in the high efficiency gas heat exchange unit (16), the heat exchange area of the inner channel (17) and the outer channel (18) is isosceles triangle, and the two side walls of the isosceles triangle are heat exchange boundaries.
7. A high-efficiency gas heating boiler according to any one of claims 1 and 4-6, characterized in that the high-efficiency gas-gas heat exchange unit (16) is made by folding high-temperature-resistant and corrosion-resistant plates.
8. A high-efficiency gas heating boiler according to any one of claims 1 to 7, characterized in that the gas-gas heat exchanger (2) is further provided with a support plate (23) for fixing the high-efficiency gas-gas heat exchange unit (16).
9. A high efficiency gas heating boiler in accordance with any one of claims 1 to 8, characterized by, that a baffle plate (32) is provided between the exhaust gas inlet chamber (12) and the exhaust gas outlet chamber (20).
10. A high efficiency gas heating boiler according to any of the claims 1 to 9, characterized in that the exhaust gas overflow (26) is located at both ends of the gas-gas heat exchanger (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120531544.6U CN216667977U (en) | 2021-03-14 | 2021-03-14 | High-efficient gas heating boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120531544.6U CN216667977U (en) | 2021-03-14 | 2021-03-14 | High-efficient gas heating boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216667977U true CN216667977U (en) | 2022-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120531544.6U Active CN216667977U (en) | 2021-03-14 | 2021-03-14 | High-efficient gas heating boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216667977U (en) |
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2021
- 2021-03-14 CN CN202120531544.6U patent/CN216667977U/en active Active
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