An energy-saving steam generator

Abstract

This utility model discloses an energy-saving steam generator, including an outer shell, a furnace body fixed inside the outer shell, a heat exchange coil fixed inside the furnace body, a burner fixed at the top of the furnace body, the bottom end of the burner extending into the interior of the heat exchange coil, a fan installed at the top of the burner, the air outlet of the fan communicating with the air inlet of the burner, and a fixed housing installed at the air inlet of the fan. This utility model installs a fixed housing at the air inlet of the fan and connects a solenoid valve controlling the gas to the fixed housing, enabling the fan to premix the gas and air before sending it into the burner. This not only achieves complete combustion of the gas but also reduces the emission of harmful gases. Furthermore, it combines fully premixed combustion, multi-turn high-efficiency heat conversion of finned tubes, and condensation preheating recovery, thereby achieving high thermal efficiency and energy-saving and environmentally friendly effects in the steam generator.

Description

Technical Field

[0001] This utility model relates to the field of steam generator technology, and specifically to an energy-saving steam generator. Background Technology

[0002] A steam generator is a mechanical device that uses the thermal energy of gas or other energy sources to heat water into steam or hot water. It is widely used in industries such as industry, medicine, and nuclear power.

[0003] Currently, gas-fired steam generators typically feed gas into the burner and provide air for combustion outside the burner. This method results in incomplete mixing of gas and air, leading to incomplete combustion and consequently, insufficient energy efficiency and the emission of more harmful gases. Therefore, there is an urgent need to design an energy-efficient steam generator to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving steam generator to address the aforementioned shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An energy-saving steam generator includes a housing, a furnace body fixed inside the housing, a heat exchange coil fixed inside the furnace body, a burner fixed at the top of the furnace body, the bottom end of the burner extending into the interior of the heat exchange coil, a fan installed at the top of the burner, the outlet of the fan communicating with the inlet of the burner, a fixed housing installed at the inlet of the fan, a one-way valve installed on the outer wall of the fixed housing away from the fan, and a solenoid valve fixed on the inner wall of the top of the housing, the outlet of the solenoid valve connected to the fixed housing.

[0007] Furthermore, a filter assembly is fixed to one inner wall of the housing, the air outlet of the filter assembly is connected to a one-way valve, and an air inlet window adapted to the filter assembly is provided on one outer wall of the housing.

[0008] Furthermore, one side of the outer wall of the outer shell is connected to a hinged door, the side wall of the outer shell has evenly distributed heat dissipation holes, and the outer wall of the furnace body is provided with a heat insulation layer.

[0009] Furthermore, a heat recovery component is fixed inside the outer shell, the outlet of the heat recovery component is connected to a flue pipe, the flue pipe extends to the outside of the outer shell, the inlet of the heat recovery component is connected to the furnace body, and the outer wall of the heat recovery component is provided with a second heat insulation layer.

[0010] Furthermore, a steam outlet pipe and a water inlet pipe are fixed on one side of the outer wall of the housing. One end of the heat exchange coil is connected to the steam outlet pipe, and the other end of the heat exchange coil is connected to the water outlet of the heat recovery component. The water inlet of the heat recovery component is connected to the water inlet pipe.

[0011] Furthermore, the filter assembly includes a filter housing, an insertion frame is inserted into the filter housing, a filter element is fixed inside the insertion frame, and hair strips fixed inside the filter housing are provided at the top and bottom of the insertion frame.

[0012] Furthermore, a baffle is fixed to one side of the outer wall of the plug frame, a magnetic block is fixed to one side of the outer wall of the baffle, and an iron block is embedded in the outer wall of the filter shell, and the magnetic block and the iron block are attracted to each other.

[0013] In the above technical solution, the energy-saving steam generator provided by this utility model has the following advantages: a fixed shell is installed at the air inlet of the blower, and the solenoid valve controlling the gas is connected to the fixed shell, so that the blower can premix the gas and air before sending them into the burner. This not only achieves the effect of complete combustion of the gas, but also reduces the emission of harmful gases, making the steam generator more energy-efficient and environmentally friendly during use. The heat recovery component recovers the heat in the flue gas, so that the water can be preheated before entering the heat exchange coil, thereby reducing the energy required for the water inside the heat exchange coil to boil, further realizing the energy-saving effect of the steam generator. The filter element can filter the air entering the burner, which can prevent the burner from clogging and reduce the ash buildup on the outer wall of the heat exchange coil. At the same time, the plug-in frame can be pulled out from the inside of the filter shell, making the filter element easier to maintain. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of an energy-saving steam generator according to the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of an embodiment of an energy-saving steam generator according to the present invention.

[0017] Figure 3 This is a schematic diagram of the filter assembly structure provided in an embodiment of an energy-saving steam generator according to the present invention.

[0018] Figure 4 This is an enlarged structural diagram of point A provided for an embodiment of an energy-saving steam generator of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Outer shell, 2. Furnace body, 3. Heat recovery assembly, 4. Burner, 5. Fan, 6. Fixed shell, 7. Solenoid valve, 8. Insulation layer one, 9. Insulation layer two, 10. Exhaust pipe, 11. Opening and closing door, 12. Heat dissipation hole, 13. One-way valve, 14. Filter assembly, 15. Steam outlet pipe, 16. Heat exchange coil, 17. Air inlet window, 18. Plug-in frame, 19. Filter element, 20. Baffle, 21. Magnetic block, 22. Iron block, 23. Filter shell, 24. Wool strip, 25. Water inlet pipe. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-4 As shown, an energy-saving steam generator provided by this utility model includes a shell 1, a furnace body 2 fixed inside the shell 1, a heat exchange coil 16 fixed inside the furnace body 2, a burner 4 fixed at the top of the furnace body 2, the bottom end of the burner 4 extending into the interior of the heat exchange coil 16, a fan 5 installed at the top of the burner 4, the outlet of the fan 5 communicating with the inlet of the burner 4, a fixed shell 6 installed at the inlet of the fan 5, a one-way valve 13 installed on the outer wall of the fixed shell 6 away from the fan 5, and a solenoid valve 7 fixed on the inner wall of the top of the shell 1, the outlet of the solenoid valve 7 being connected to the fixed shell 6.

[0023] Specifically, in this embodiment, the furnace includes an outer shell 1, inside which a furnace body 2 is fixed. The furnace body 2 is cylindrical in shape, and a heat exchange coil 16 is fixed inside the furnace body 2. The heat exchange coil 16 is a high-efficiency finned coil with multi-turn spiral winding, which is a technology known for its high heat exchange performance. A burner 4 is fixed at the top of the furnace body 2, and the bottom end of the burner 4 extends into the interior of the heat exchange coil 16. A fan 5 is installed at the top of the burner 4, and the outlet of the fan 5 is connected to the inlet of the burner 4. A fixed shell 6 is installed at the inlet of the fan 5, and a one-way valve 13 is installed on the outer wall of the fixed shell 6 on the side away from the fan 5. A solenoid valve 7 is fixed on the inner wall of the top of the outer shell 1. The inlet of the solenoid valve 7 is connected to the gas pipeline, and the outlet of the solenoid valve 7 is connected to the fixed shell 6. The gas and oxygen are fully premixed inside the fan 5 through its blades to ensure complete combustion. This solves the problems of incomplete combustion generating harmful gases and insufficient utilization of gas.

[0024] This utility model provides an energy-saving steam generator. A fixed shell 6 is installed at the air inlet of the blower 5, and a solenoid valve 7 for controlling the gas is connected to the fixed shell 6. This allows the blower 5 to premix the gas and air before sending them into the burner 4. This not only achieves complete combustion of the gas, but also reduces the emission of harmful gases, making the steam generator more energy-efficient and environmentally friendly during use.

[0025] In another embodiment of this utility model, a filter assembly 14 is fixed on one inner wall of the outer shell 1. The air outlet of the filter assembly 14 is connected to a one-way valve 13. An air inlet window 17 adapted to the filter assembly 14 is provided on one outer wall of the outer shell 1. When the fan 5 is working, the external air enters the filter assembly 14 through the air inlet window 17 for filtration, and is then sucked into the fixed shell 6 and enters the interior of the fan 5. A switch door 11 is connected to one outer wall of the outer shell 1 by a hinge. The switch door 11 facilitates maintenance. The side wall of the outer shell 1 has evenly distributed heat dissipation holes 12, which facilitate heat dissipation. The outer wall of the furnace body 2 is provided with a heat insulation layer 8, which is made of a high-temperature resistant heat insulation material, such as rock wool, which can insulate the outer wall of the furnace body 2 and reduce the loss of internal heat.

[0026] In another embodiment of this utility model, a heat recovery component 3 is fixed inside the outer shell 1. The heat recovery component 3 is a prior art technology and has a heat exchange tube inside. Specifically, water is introduced into the heat exchange tube of the heat recovery component 3, and then high-temperature flue gas also passes through the outside of the heat exchange tube of the heat recovery component 3, so that the water can recover the heat in the high-temperature flue gas. The outlet of the heat recovery component 3 is connected to the exhaust pipe 10, which extends to the outside of the outer shell 1. After heat recovery, the flue gas becomes low-temperature flue gas and is discharged from the exhaust pipe 10. The inlet of the heat recovery component 3 is connected to the furnace body 2. The outer wall of the heat recovery component 3 is provided with a second insulation layer 9, which is also made of high-temperature resistant material. It can keep the outer wall of the heat recovery component 3 warm and reduce the loss of internal heat. By recovering the heat in the flue gas through the heat recovery component 3, the water can be preheated before entering the heat exchange coil 16, thereby reducing the energy required for the water inside the heat exchange coil 16 to boil, and further realizing the energy-saving effect of the steam generator.

[0027] In another embodiment of this utility model, a steam outlet pipe 15 and a water inlet pipe 25 are fixed on one side of the outer wall of the outer shell 1. The water inlet pipe 25 is connected to the outlet of the water pump. One end of the heat exchange coil 16 is connected to the steam outlet pipe 15, and steam flows out from the steam outlet pipe 15. The other end of the heat exchange coil 16 is connected to the outlet of the heat recovery component 3. Water flowing out from the heat recovery component 3 enters the heat exchange coil 16. The inlet of the heat recovery component 3 is connected to the water inlet pipe 25, so that the water pump can deliver water to the interior of the heat recovery component 3. This utility model combines fully premixed combustion, multi-turn finned tube high-efficiency heat conversion, and condensation preheating recovery, thereby achieving high thermal utilization efficiency and energy-saving and environmentally friendly effects of the steam generator.

[0028] In another embodiment of this utility model, the filter assembly 14 includes a filter housing 23, with a connecting frame 18 inserted inside the filter housing 23. A filter element 19 is fixed inside the connecting frame 18, and the filter element 19 is used to filter dust in the air. The top and bottom of the connecting frame 18 are provided with hair strips 24 fixed inside the filter housing 23. The hair strips 24 can seal the upper and lower edges of the connecting frame 18, allowing the air to be fully filtered. A baffle 20 is fixed to one side of the outer wall of the connecting frame 18. The side wall of the baffle 20 has a handle. A magnetic block 21 is fixed on one side of the outer wall of the baffle 20, and an iron block 22 is embedded in the outer wall of the filter shell 23. The magnetic block 21 and the iron block 22 are attracted to each other. The attraction between the magnetic block 21 and the iron block 22 makes the baffle 20 and the filter shell 23 stable. The filter element 19 can filter the air entering the burner 4, which can prevent the burner 4 from being blocked and reduce the ash generated on the outer wall of the heat exchange coil 16. At the same time, the plug frame 18 can be pulled out from the inside of the filter shell 23, making the filter element 19 more convenient to maintain.

[0029] Working principle: During use, water is introduced into the inlet pipe 25 at a fixed flow rate. The water then enters the heat recovery assembly 3 and then the heat exchange coil 16. Next, the gas is connected to the inlet of the solenoid valve 7. When the solenoid valve 7 opens, the gas enters the fixed housing 6. Simultaneously, the fan 5 draws in air from the air inlet 17. The blades of the fan 5 mix the air and gas, which is then delivered to the burner 4. The ignition device then ignites the gas flowing from the burner 4, allowing the flame to heat the water inside the heat exchange coil 16 into steam. The flue gas produced by the combustion of steam and gas enters the heat recovery component 3, allowing the water in the heat recovery component 3 to recover the heat from the flue gas. This ensures that the water flowing from the heat recovery component 3 into the heat exchange coil 16 is hot water, thus requiring less energy to heat the water inside the heat exchange coil 16 to boiling. The filter element 19 inside the filter component 14 can filter dust from the air. When the filter element 19 needs to be cleaned, the steam generator is in a stopped state. Open the switch door 11, and then pull the plug frame 18 directly out from inside the filter shell 23 to easily clean the filter element 19.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An energy-saving steam generator, characterized in that, The device includes an outer shell (1), a furnace body (2) is fixed inside the outer shell (1), a heat exchange coil (16) is fixed inside the furnace body (2), a burner (4) is fixed on the top of the furnace body (2), the bottom end of the burner (4) extends into the interior of the heat exchange coil (16), a fan (5) is installed on the top of the burner (4), the outlet of the fan (5) is connected to the inlet of the burner (4), a fixed shell (6) is installed at the inlet of the fan (5), a one-way valve (13) is installed on the outer wall of the fixed shell (6) away from the fan (5), and a solenoid valve (7) is fixed on the inner wall of the top of the outer shell (1), the outlet of the solenoid valve (7) is connected to the fixed shell (6).

2. The energy-saving steam generator according to claim 1, characterized in that, A filter assembly (14) is fixed on one side of the inner wall of the outer casing (1). The air outlet of the filter assembly (14) is connected to a one-way valve (13). An air inlet window (17) adapted to the filter assembly (14) is provided on one side of the outer wall of the outer casing (1).

3. The energy-saving steam generator according to claim 1, characterized in that, The outer wall of the outer shell (1) is connected to a hinged door (11), and the outer wall of the outer shell (1) has evenly distributed heat dissipation holes (12). The outer wall of the furnace body (2) is provided with a heat insulation layer (8).

4. The energy-saving steam generator according to claim 1, characterized in that, The heat recovery component (3) is fixed inside the outer shell (1). The outlet of the heat recovery component (3) is connected to the flue pipe (10). The flue pipe (10) extends to the outside of the outer shell (1). The inlet of the heat recovery component (3) is connected to the furnace body (2). The outer wall of the heat recovery component (3) is provided with a second heat insulation layer (9).

5. An energy-saving steam generator according to claim 4, characterized in that, A steam outlet pipe (15) and a water inlet pipe (25) are fixed on one side of the outer wall of the outer shell (1). One end of the heat exchange coil (16) is connected to the steam outlet pipe (15), and the other end of the heat exchange coil (16) is connected to the water outlet of the heat recovery component (3). The water inlet of the heat recovery component (3) is connected to the water inlet pipe (25).

6. An energy-saving steam generator according to claim 2, characterized in that, The filter assembly (14) includes a filter housing (23), a connector frame (18) is inserted into the filter housing (23), a filter element (19) is fixed inside the connector frame (18), and a hair strip (24) fixed inside the filter housing (23) is provided at the top and bottom of the connector frame (18).

7. An energy-saving steam generator according to claim 6, characterized in that, A baffle (20) is fixed on one side of the outer wall of the plug frame (18), a magnetic block (21) is fixed on one side of the outer wall of the baffle (20), and an iron block (22) is embedded in the outer wall of the filter shell (23). The magnetic block (21) and the iron block (22) are attracted to each other.

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