Steam heat source and steam production method thereof

Abstract

The present application relates to the technical field of steam equipment, and discloses a steam heat source machine and a steam production method thereof, which comprise an organism, a combustion chamber, a combustion device, a heat exchange pipe, a smoke box and an oil supply module, the top of the combustion chamber is provided with an upper header communicating with the heat exchange pipe, the bottom of the combustion chamber is provided with a lower header communicating with the heat exchange pipe, the upper end of the upper header is provided with a gas outlet pipe seat, the lower header is connected with a water supply module, the top of the combustion chamber and the inner side of the upper header are provided with an upper cover, the bottom of the upper cover is provided with a smoke blocking layer, the side wall of the combustion chamber is provided with a smoke outlet, the combustion chamber is provided with a smoke blocking tile surrounding the heat exchange pipe, the smoke blocking tile is provided with a smoke outlet hole, and the smoke blocking tile and the side wall of the combustion chamber are spaced apart, and the outer side wall of the heat exchange pipe is provided with helical fins distributed in the circumferential direction. In this way, the flue gas is guided to spiral along the helical fins and spiral around the outer side wall of the heat exchange pipe, so that the contact time and the heat exchange path of the flue gas and the heat exchange pipe are prolonged, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of steam equipment, and more particularly to a steam heat source and a steam production method thereof. Background Technology

[0002] Steam heat exchangers are widely used in industrial heating, HVAC, food processing, and textile printing and dyeing. Their core function is to generate high-temperature flue gas through a combustion device and then transfer the heat from the flue gas to water using heat exchange tubes, thereby producing steam. However, in actual operation, existing steam heat exchangers cause the high-temperature flue gas to directly impact the surface of the heat exchange tubes within the combustion chamber for heat exchange. Due to the short flow path of the flue gas and the lack of effective guidance, the heat exchange between the flue gas and the heat exchange tubes is often insufficient. Some of the high-temperature flue gas is discharged directly before completing effective heat exchange, resulting in low thermal efficiency. Furthermore, the direct impact of the flue gas on the heat exchange tubes can easily cause localized overheating, affecting the lifespan and operational stability of the heat exchange tubes. For example, patent publication number CN114508745B discloses a once-through steam generator or steam boiler and its heat exchange unit, which also suffers from the above problems. Summary of the Invention

[0003] In view of this, the present invention provides a steam heat source and a steam production method thereof that enable the high-temperature flue gas in the combustion chamber to fully contact the heat exchange tube for heat exchange, thereby improving the heat exchange efficiency.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows: A steam heat source unit includes a body, a combustion chamber disposed within the body, a combustion device disposed at the bottom of the combustion chamber, a plurality of heat exchange tubes disposed within the combustion chamber, a smoke box disposed within the body and connected to the combustion chamber, and an oil supply module disposed within the body and providing fuel to the combustion device. The top of the combustion chamber is provided with an upper manifold connected to the upper ends of the plurality of heat exchange tubes, and the bottom of the combustion chamber is provided with a lower manifold connected to the lower ends of the plurality of heat exchange tubes. The upper end of the upper manifold... The combustion chamber is equipped with an exhaust pipe seat. A water supply module that provides water to the lower header is provided inside the combustion chamber. A top cover is provided on the top of the combustion chamber and inside the upper header. A smoke baffle layer is provided at the bottom of the top cover. A smoke outlet connected to the smoke box is provided on the side wall of the combustion chamber. A smoke baffle plate surrounding several heat exchange tubes is provided in the combustion chamber. Several smoke outlet holes are provided on the smoke baffle plate. There is a gap between the smoke baffle plate and the side wall of the combustion chamber. Spiral fins distributed circumferentially are provided on the outer side wall of the heat exchange tubes.

[0005] In a preferred embodiment of the present invention, a turbulence core rod is provided inside the heat exchange tube and at its bottom. The turbulence core rod includes a first rod body, a first fixing block disposed at the lower end of the first rod body and fixed to the bottom end of the heat exchange tube, a first blocking block disposed at the upper end of the first rod body, and a plurality of turbulence spiral blades spaced apart on the outer side wall of the first rod body. The first fixing block is provided with a first through hole communicating with the inside of the heat exchange tube, and the first blocking block is provided with a second through hole communicating with the inside of the heat exchange tube.

[0006] In a preferred embodiment of the present invention, a steam-water separator is provided inside the heat exchange tube and at its top. The steam-water separator includes a second rod, a second block disposed at the lower end of the second rod, a second fixing block disposed at the upper end of the second rod and fixed to the top of the heat exchange tube, and steam-water separating spiral blades disposed on the outer wall of the second rod and distributed circumferentially. The second block is provided with a third through hole communicating with the inside of the heat exchange tube, and the second fixing block is provided with a fourth through hole communicating with the inside of the heat exchange tube.

[0007] In a preferred embodiment of the present invention, the upper header is provided with an air outlet communicating with the air outlet pipe seat, and the upper header is provided with a steam-water separation cover plate covering the air outlet. The steam-water separation cover plate has a U-shaped cross-section and a plurality of air inlets are provided on the side wall of the steam-water separation cover plate. A steam-water separation baffle is provided inside the steam-water separation cover plate, and a plurality of air outlets are provided inside the steam-water separation baffle plate.

[0008] In a preferred embodiment of the present invention, the lower end of the lower manifold is provided with at least two water inlet pipe seats for connection with the water supply module, the lower manifold is provided with a water inlet connected to the water inlet pipe seats, and a water supply equalization cover plate covering the water inlet is provided inside the lower manifold. The cross-section of the water supply equalization cover plate is U-shaped, and a plurality of water outlet holes are provided on the side wall of the water supply equalization cover plate.

[0009] In a preferred embodiment of the present invention, a water inlet is provided on the side wall of the body, and the water supply module includes a water pump disposed in the body, a water supply pipe disposed between the water inlet and the water pump, and a water supply pipeline disposed between the water pump and the water inlet pipe seat. The side wall of the smoke box is provided with a water inlet pipe seat and a water outlet pipe seat. The water supply pipeline includes a water inlet pipe disposed between the water pump and the water inlet pipe seat, a condenser pipe disposed between the water inlet pipe seat and the water outlet pipe seat and passing through the smoke box, and a water inlet pipe disposed between the water inlet pipe seat and the water outlet pipe seat.

[0010] In a preferred embodiment of the present invention, the water inlet pipe seat is disposed on the front side of the smoke box, the water outlet pipe seat is disposed on the rear side of the smoke box, the condenser pipe enters the smoke box at the front water inlet pipe seat, spirals upward from bottom to top in the shape of fins, then extends to the rear side, then spirals downward from top to bottom in the shape of fins, and finally exits the smoke box and connects to the water outlet pipe seat.

[0011] In a preferred embodiment of the present invention, the upper end of the upper manifold is provided with a first water level detection pipe seat communicating with the interior of the upper manifold, and the lower end of the lower manifold is provided with a second water level detection pipe seat communicating with the interior of the lower manifold. A water level gauge is provided between the first water level detection pipe seat and the second water level detection pipe seat, and the water level gauge is located on the outside of the machine body.

[0012] In a preferred embodiment of the present invention, a base is provided at the bottom of the combustion chamber and inside the lower header. The base has an installation cavity for installing the combustion device. The combustion device includes a burner head disposed on the base, an oil injector disposed below the burner head, an ignition needle disposed above the oil injector, and a blower disposed below the burner head. The oil supply module includes an oil pump disposed in the machine body and an oil supply pipe disposed on the oil pump and connected to the oil injector.

[0013] This invention also discloses a steam production method, which uses the steam heat source machine described above, and the production steps are as follows: The water pump is started to supply water to the lower header. After the water flows into the lower header, it is evenly supplied to each heat exchange tube through the water supply equalization cover. During this process, the water flow pattern is disrupted by the turbulence spiral blades on the turbulence core rod. Under the disturbance of the multi-stage turbulence spiral blades, the water flow will form multiple small vortices for heat exchange. When the combustion device is started, high-temperature flames and flue gas are generated in the combustion chamber to exchange heat with the heat exchange tubes. During this process, the high-temperature flue gas rises until it collides with the smoke baffle layer, and then it will swirl and spread outwards from the center of the combustion chamber, thus forming a vortex in the combustion chamber. The spreading high-temperature flue gas will rush towards the heat exchange tubes, and then travel along the spiral fins on the side wall of the heat exchange tubes to exchange heat. When the high-temperature flue gas travels to one side of the smoke baffle plate, it flows out through the smoke outlet on the smoke baffle plate, and then flows into the smoke box and is discharged from the smoke outlet. After the high-temperature flue gas exchanges heat with the heat exchange tubes, it enters the smoke box and exchanges heat again with the water flowing through the condenser tubes, thereby preheating the water in the condenser tubes. After being cooled by heat exchange, the flue gas is discharged from the exhaust port of the smoke box. As heating continues, the water in the heat exchange tube absorbs heat, becomes saturated, and evaporates. Due to the difference in density between the vapor and water, the vapor bubbles rise along the outer wall of the turbulence core rod, while the liquid water descends along the turbulence spiral blades. During the descent, the liquid water is guided by the turbulence spiral blades, causing it to form small eddies again for heat exchange. After the bubbles rise in the heat exchange tube, they gather below the second block and form wet saturated steam. The wet saturated steam then continues to rise and enters the steam-water separator through the third through hole for steam-water separation. The separated liquid water flows back to the bottom. After initial separation by the steam-water separator, the steam enters the upper header through the fourth through hole, and then undergoes further separation through the steam-water separation cover plate and steam-water separation baffle plate in the upper header, thereby forming dry saturated steam with a dryness of over 98% and outputting it through the outlet pipe seat.

[0014] The beneficial effects of this invention are as follows: By providing circumferentially distributed spiral fins on the outer wall of the heat exchange tube, the flow path of the high-temperature flue gas is altered. This prevents the flue gas from directly impacting the surface of the heat exchange tube, instead guiding it to spiral around the outer wall of the heat exchange tube along the spiral fins. This extends the contact time and heat exchange path between the flue gas and the heat exchange tube, allowing for more complete absorption of heat from the flue gas and effectively improving the heat exchange capacity per unit volume of the heat exchange tube. Simultaneously, because the flue gas does not directly impact the surface of the heat exchange tube but flows flexibly around the fins, the surface of the heat exchange tube is heated more uniformly, significantly reducing the risk of localized overheating. This reduces the concentration of thermal stress and helps extend the service life of the heat exchange tube and the entire steam generating mechanism. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a schematic diagram of the combustion chamber, smoke box, water supply module, and oil supply module in this invention; Figure 3 This is a first vertical sectional view of the combustion chamber in this invention; Figure 4 This is a second vertical sectional view of the combustion chamber in this invention; Figure 5 This is a horizontal sectional view of the combustion chamber in this invention; Figure 6 This is an exploded view of the combustion device in this invention; Figure 7 This is a schematic diagram of the heat exchange tube in this invention; Figure 8 This is a schematic diagram of the turbulence core rod in this invention; Figure 9 This is a schematic diagram of the first fixing block in this invention; Figure 10 This is a schematic diagram of the first blocking block in this invention; Figure 11 This is a schematic diagram of the steam-water separator in this invention; Figure 12 This is a schematic diagram of the second blocking block in this invention; Figure 13 This is a schematic diagram of the second fixing block in this invention; Figure 14 This is a schematic diagram of the condenser tube in this invention; Figure 15 This is a schematic diagram of the oil supply module in this invention. Detailed Implementation

[0016] The technical solutions in the embodiments of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0017] Reference Figures 1 to 15 A steam heat source machine includes a body, a combustion chamber 1 disposed within the body, a combustion device 2 disposed at the bottom of the combustion chamber 1, a plurality of heat exchange tubes 3 disposed within the combustion chamber 1, a smoke box 4 disposed within the body and connected to the combustion chamber 1, and an oil supply module 5 disposed within the body and providing fuel to the combustion device 2. The top of the combustion chamber 1 is provided with an upper manifold 6 connected to the upper ends of the plurality of heat exchange tubes 3, and the bottom of the combustion chamber 1 is provided with a lower manifold 7 connected to the lower ends of the plurality of heat exchange tubes 3. An exhaust pipe seat 61 is provided at the upper end of the upper manifold 6. The machine body is equipped with a water supply module 8 that provides water to the lower header 7. A top cover 11 is located at the top of the combustion chamber 1 and inside the upper header 6. A smoke baffle layer 111 is located at the bottom of the top cover 11. A smoke outlet 12 communicating with the smoke box 4 is located on the side wall of the combustion chamber 1. A smoke baffle plate 9 surrounds several heat exchange tubes 3 inside the combustion chamber 1. Several smoke outlet holes 91 are provided on the smoke baffle plate 9. There is a gap between the smoke baffle plate 9 and the side wall of the combustion chamber 1. Spiral fins 31 are distributed circumferentially on the outer wall of the heat exchange tubes 3. The spiral fins 31 prevent high-temperature flue gas from directly impacting the heat exchange tubes 3 for heat exchange. Instead, the flue gas flows around the outer wall of the heat exchange tubes 3 along the spiral fins 31, allowing the high-temperature flue gas to fully contact the heat exchange tubes 3 for heat exchange, thus improving heat exchange efficiency.

[0018] In this design, a turbulence-inducing core rod 32 is provided inside and at the bottom of the heat exchange tube 3. The turbulence-inducing core rod 32 includes a first rod body 321, a first fixing block 322 disposed at the lower end of the first rod body 321 and fixed to the bottom end of the heat exchange tube 3, a first blocking block 323 disposed at the upper end of the first rod body 321, and several turbulence-inducing spiral blades 324 spaced apart on the outer wall of the first rod body 321. The first fixing block 322 has a first through hole 3221 communicating with the inside of the heat exchange tube 3, and the first blocking block 323 has a second through hole 3231 communicating with the inside of the heat exchange tube 3. By providing a turbulence-inducing core rod 32 with multiple turbulence-inducing spiral blades 324 at the bottom of the heat exchange tube 3, the water flow will flow along the turbulence-inducing spiral blades 324 after entering the heat exchange tube 3, thereby forming multi-stage small eddies, which disrupts the laminar or stagnant flow state of the water flow and greatly enhances the turbulence and convective heat transfer inside the tube. Meanwhile, at the upper end of the turbulence core rod 32, when the water evaporates to form a steam-water mixture, the steam bubbles rise along the outer wall of the core rod, while the liquid water descends along the turbulence spiral blades 324, continuing to form small eddies for heat exchange, further improving the overall heat exchange efficiency of the heat exchange tube 3.

[0019] In this design, a steam-water separator 33 is installed inside and at the top of the heat exchange tube 3. The steam-water separator 33 includes a second rod 331, a second blocking block 332 located at the lower end of the second rod 331, a second fixing block 333 located at the upper end of the second rod 331 and fixed to the top of the heat exchange tube 3, and steam-water separating spiral blades 334 arranged circumferentially on the outer wall of the second rod 331. The second blocking block 332 has a third through hole 3321 communicating with the inside of the heat exchange tube 3, and the second fixing block 333 has a fourth through hole 3331 communicating with the inside of the heat exchange tube 3. This performs the first steam-water separation inside the heat exchange tube 3, thereby improving the dryness of the steam entering the upper header 6 and reducing the burden of performing the second steam-water separation inside the upper header 6.

[0020] In this design, the upper header 6 is provided with an air outlet 62 that communicates with the air outlet pipe seat 61. The upper header 6 is provided with a vapor-water separation cover 63 covering the air outlet 62. The vapor-water separation cover 63 has a U-shaped cross-section and a plurality of air inlets 631 on its side wall. The vapor-water separation cover 63 is provided with a vapor-water separation baffle 64, and the vapor-water separation baffle 64 is provided with a plurality of air outlets 641. The air inlets 631 are located below the vapor-water separation cover 63. By installing a steam-water separation cover plate 63 and a built-in steam-water separation baffle plate 64 inside the upper header 6, a multi-stage settling and separation chamber is formed. In this way, the steam carrying a small amount of moisture rising from the heat exchange tube 3 needs to enter through the air inlet 631 below the side wall of the steam-water separation cover plate 63 and flow in the tortuous channel formed between the cover plate and the baffle plate. The denser water droplets will collide with and adhere to the wall of the steam-water separation cover plate 63 or the steam-water separation baffle plate 64. Finally, the steam rising from the air outlet 641 is high dryness steam, thus realizing the second steam-water separation and ensuring that the dryness of the final output steam can stably reach more than 98%.

[0021] In this design, the lower manifold 7 has at least two water inlet pipe seats 71 for connecting to the water supply module 8 at its lower end. The lower manifold 7 has water inlets 72 communicating with the water inlet pipe seats 71. Inside the lower manifold 7, a water flow equalization cover 73 covers the water inlets 72. The water flow equalization cover 73 has a U-shaped cross-section, and its sidewalls have several water outlet holes 731. By installing the U-shaped water flow equalization cover 73 inside the lower manifold 7, the water flowing from the inlet pipe seat 41 will not directly impact a localized area. Instead, it will first enter the cover and then be evenly distributed throughout the entire interior of the lower manifold 7 from the multiple water outlet holes 731 on the sidewalls. This ensures balanced water pressure throughout the lower manifold 7, allowing each heat exchange pipe 3 connected to the lower manifold 7 to receive uniform water supply.

[0022] In this design, the lower end of the lower header 7 is equipped with a drain pipe seat that communicates with the interior of the lower header 7. This facilitates the periodic removal of scale and impurities deposited at the bottom of the lower header 7, ensuring the cleanliness of the inner wall of the heat exchange tube 3 and maintaining long-term heat exchange efficiency, thereby extending the equipment maintenance cycle and service life.

[0023] In this solution, a water inlet is provided on the side wall of the machine body. The water supply module 8 includes a water pump 81 installed in the machine body, a water supply pipe 82 installed between the water inlet and the water pump 81, and a water supply pipeline 83 installed between the water pump 81 and the water inlet pipe seat 41. The side wall of the smoke box 4 is provided with a water inlet pipe seat 41 and a water outlet pipe seat 42. The water supply pipeline 83 includes a water inlet pipe 831 installed between the water pump 81 and the water inlet pipe seat 41, a condenser pipe 832 installed between the water inlet pipe seat 41 and the water outlet pipe seat 42 and passing through the smoke box 4, and a water inlet pipe 833 installed between the water inlet pipe seat 71 and the water outlet pipe seat 42. The water inlet pipe 833 includes several water inlet branch pipes connected to the water inlet pipe seat 71. In this way, the condenser tube 832 passes through the smoke box 4, which carries the high-temperature flue gas, to fully exchange heat with the high-temperature flue gas. This preheats the water before it enters the lower header 7, thereby effectively reducing the energy consumption of the combustion chamber 1 and improving the overall thermal efficiency of the unit. At the same time, the temperature of the flue gas decreases after heat exchange, which also prevents the high-temperature flue gas from being directly discharged from the smoke box 4.

[0024] In this design, both the inlet pipe seat 41 and the outlet pipe seat 42 are located at the bottom of the flue gas chamber 4. The inlet pipe seat 41 is located on the front side of the flue gas chamber 4, and the outlet pipe seat 42 is located on the rear side of the flue gas chamber 4. The condenser tube 832 enters the flue gas chamber 4 through the inlet pipe seat 41 on the front side, spirals upwards in a finned shape, then extends to the rear side, and then spirals downwards in a finned shape, finally exiting the flue gas chamber 4 and connecting to the outlet pipe seat 42. This layout design extends the travel of the condenser tube 832 within the flue gas chamber 4, thereby increasing the heat exchange time with the high-temperature flue gas. Furthermore, the spiral shape and finned structure significantly increase the heat exchange surface area, while simultaneously disrupting the laminar flow of the flue gas, forming strong turbulence, and significantly improving the convective heat transfer coefficient.

[0025] In this design, the bottom side of the smoke box 4 is provided with a condensate drain pipe for discharging condensate, so that the acidic condensate generated when the flue gas is cooled on the surface of the condenser pipe 832 will flow along the inner wall of the box and the outer wall of the condenser pipe 832 to the bottom of the smoke box 4, and then be discharged from the machine body in a timely manner through the condensate drain pipe to prevent it from accumulating in the smoke box 4.

[0026] In this design, the upper end of the upper header 6 is provided with a first water level detection pipe seat 101 communicating with the interior of the upper header 6, and the lower end of the lower header 7 is provided with a second water level detection pipe seat 102 communicating with the interior of the lower header 7. A water level gauge 103 is provided between the first water level detection pipe seat 101 and the second water level detection pipe seat 102, and the water level gauge 103 is located on the outside of the machine body. This allows operators to conveniently monitor the overall water level inside the steam generating mechanism in real time and accurately, preventing dry burning accidents due to water shortage or affecting steam quality due to excessively high water levels. Furthermore, a water pressure gauge and / or pressure sensor for detecting the internal pressure can also be provided on the water inlet pipe 831.

[0027] In this design, a base 13 is provided at the bottom of the combustion chamber 1 and inside the lower header 7. The base 13 has an installation cavity 131 for installing the combustion device 2. The combustion device 2 includes a burner head 21 on the base 13, an oil injector 22 below the burner head 21, an ignition needle 23 above the oil injector 22, and a blower 24 below the burner head 21. The oil supply module 5 includes an oil pump 51 inside the machine body and an oil supply pipe 52 on the oil pump 51 and connected to the oil injector 22.

[0028] This invention also discloses a steam production method, which uses the steam heat source machine described above, and the production steps are as follows: The water pump 81 is started to supply water to the lower header 7. After the water flows into the lower header 7, it is evenly supplied to each heat exchange tube 3 through the water supply equalization cover plate 73. During this process, the water flow pattern is disrupted by the turbulence spiral blades 324 on the turbulence core rod 32. Under the disturbance of the multi-stage turbulence spiral blades 324, the water flow will form multiple small vortices for heat exchange. The combustion device 2 is started, and high-temperature flames and flue gas are generated in the combustion chamber 1 to exchange heat with the heat exchange tube 3. During this process, the high-temperature flue gas will rise until it collides with the smoke baffle 111, and then it will swirl and diffuse in all directions from the center of the combustion chamber 1, thus forming a vortex in the combustion chamber 1. The diffused high-temperature flue gas will rush towards the heat exchange tube 3, and then flow around the side wall of the heat exchange tube 3 along the spiral fins 31 to exchange heat. When the high-temperature flue gas reaches the side of the smoke baffle 9, it flows out through the smoke outlet 91 on the smoke baffle 9, and then flows into the smoke box 4 through the smoke outlet 12 and is discharged. After the high-temperature flue gas exchanges heat with the heat exchange tube 3, it enters the smoke box 4 and exchanges heat again with the water flowing through the condenser tube 832 to preheat the water in the condenser tube 832. After the flue gas is cooled by heat exchange, it will be discharged from the exhaust port of the smoke box 4. As heating continues, the water in the heat exchange tube 3 absorbs heat and becomes saturated and evaporates. Due to the difference in density between the vapor and water, the vapor bubbles rise along the outer wall of the turbulence core rod 32, while the liquid water falls along the turbulence spiral blades 324. During the descent of the liquid water, it is guided by the turbulence spiral blades 324, causing it to form small eddies again for heat exchange. After the bubbles rise in the heat exchange tube 3, they gather below the second block 332 and form wet saturated steam. The wet saturated steam then continues to rise and enters the steam-water separator 33 through the third through hole 3321 for steam-water separation. The separated liquid water flows back to the bottom. After initial separation by the steam-water separator 33, the steam enters the upper header 6 through the fourth through hole 3331, and then undergoes further separation through the steam-water separation cover plate 63 and the steam-water separation partition plate 64 in the upper header 6, thereby forming dry saturated steam with a dryness of more than 98% and outputting it through the outlet pipe seat 61.

[0029] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A steam heat source machine, comprising a body, a combustion chamber (1) disposed within the body, a combustion device (2) disposed at the bottom of the combustion chamber (1), a plurality of heat exchange tubes (3) disposed within the combustion chamber (1), a smoke box (4) disposed within the body and connected to the combustion chamber (1), and an oil supply module (5) disposed within the body and providing fuel to the combustion device (2), wherein the top of the combustion chamber (1) is provided with an upper manifold (6) communicating with the upper ends of the plurality of heat exchange tubes (3), the bottom of the combustion chamber (1) is provided with a lower manifold (7) communicating with the lower ends of the plurality of heat exchange tubes (3), the upper end of the upper manifold (6) is provided with an exhaust pipe seat (61), and the body is provided with a water supply module (8) providing water to the lower manifold (7), characterized in that, The combustion chamber (1) is provided with a top cover (11) at the top and inside the upper header (6). The bottom of the top cover (11) is provided with a smoke baffle layer (111). The side wall of the combustion chamber (1) is provided with a smoke outlet (12) connected to the smoke box (4). The combustion chamber (1) is provided with a smoke baffle plate (9) surrounding a number of heat exchange tubes (3). The smoke baffle plate (9) is provided with a number of smoke outlet holes (91). There is a gap between the smoke baffle plate (9) and the side wall of the combustion chamber (1). The outer side wall of the heat exchange tubes (3) is provided with spiral fins (31) distributed in the circumferential direction. The heat exchange tube (3) is provided with a turbulence core rod (32) at its bottom. The turbulence core rod (32) includes a first rod body (321), a first fixing block (322) disposed at the lower end of the first rod body (321) and fixed to the bottom end of the heat exchange tube (3), a first blocking block (323) disposed at the upper end of the first rod body (321), and a plurality of turbulence spiral blades (324) spaced apart on the outer side wall of the first rod body (321). The first fixing block (322) is provided with a first through hole (3221) communicating with the inside of the heat exchange tube (3), and the first blocking block (323) is provided with a second through hole (3231) communicating with the inside of the heat exchange tube (3). A steam-water separator (33) is provided inside the heat exchange tube (3) and at its top. The steam-water separator (33) includes a second rod (331), a second block (332) located at the lower end of the second rod (331), a second fixing block (333) located at the upper end of the second rod (331) and fixed to the top of the heat exchange tube (3), and steam-water separation spiral blades (334) located on the outer wall of the second rod (331) and distributed circumferentially. The second block (332) is provided with a third through hole (3321) communicating with the inside of the heat exchange tube (3), and the second fixing block (333) is provided with a fourth through hole (3331) communicating with the inside of the heat exchange tube (3). The upper header (6) is provided with an air outlet (62) that communicates with the air outlet pipe seat (61). The upper header (6) is provided with a steam-water separation cover plate (63) covering the air outlet (62). The steam-water separation cover plate (63) has a U-shaped cross-section and a number of air inlets (631) are provided on the side wall of the steam-water separation cover plate (63). The steam-water separation cover plate (63) is provided with a steam-water separation partition plate (64) and a number of air outlets (641) are provided in the steam-water separation partition plate (64).

2. A steam heat source machine according to claim 1, characterized in that, The lower end of the lower manifold (7) is provided with at least two water inlet pipe seats (71) for connecting to the water supply module (8). The lower manifold (7) is provided with a water inlet (72) connected to the water inlet pipe seat (71). The lower manifold (7) is provided with a water supply equalization cover plate (73) covering the water inlet (72). The cross-section of the water supply equalization cover plate (73) is U-shaped. The side wall of the water supply equalization cover plate (73) is provided with several water outlet holes (731).

3. A steam heat source machine according to claim 2, characterized in that, The side wall of the smoke box (4) is provided with an inlet pipe seat (41) and an outlet pipe seat (42). The side wall of the machine body is provided with a water inlet. The water supply module (8) includes a water pump (81) installed in the machine body, a water supply pipe (82) installed between the water inlet and the water pump (81), and a water supply pipeline (83) installed between the water pump (81) and the inlet pipe seat (41). The water supply pipeline (83) includes an inlet pipe (831) installed between the water pump (81) and the inlet pipe seat (41), a condenser pipe (832) installed between the inlet pipe seat (41) and the outlet pipe seat (42) and passing through the smoke box (4), and a water supply pipe (833) installed between the water supply pipe seat (71) and the outlet pipe seat (42).

4. A steam heat source machine according to claim 3, characterized in that, The inlet pipe seat (41) is located on the front side of the smoke box (4), and the outlet pipe seat (42) is located on the rear side of the smoke box (4). The condenser pipe (832) enters the smoke box (4) at the inlet pipe seat (41) on the front side, spirals upward from bottom to top in the shape of fins, then extends to the rear side, spirals downward from top to bottom in the shape of fins, and finally exits the smoke box (4) and connects to the outlet pipe seat (42).

5. A steam heat source machine according to claim 3, characterized in that, The upper end of the upper manifold (6) is provided with a first water level detection pipe seat (101) that communicates with the interior of the upper manifold (6), and the lower end of the lower manifold (7) is provided with a second water level detection pipe seat (102) that communicates with the interior of the lower manifold (7). A water level gauge (103) is provided between the first water level detection pipe seat (101) and the second water level detection pipe seat (102), and the water level gauge (103) is located on the outside of the machine body.

6. A steam heat source machine according to claim 3, characterized in that, A base (13) is provided at the bottom of the combustion chamber (1) and inside the lower header (7). The base (13) has an installation cavity (131) for installing the combustion device (2). The combustion device (2) includes a burner (21) on the base (13), an oil nozzle (22) below the burner (21), an ignition needle (23) above the oil nozzle (22), and a blower (24) below the burner (21). The oil supply module (5) includes an oil pump (51) inside the machine body and an oil supply pipe (52) on the oil pump (51) and connected to the oil nozzle (22).

7. A method for producing steam, characterized in that, Using the steam heat source machine as described in any one of claims 3 to 6, the production steps are as follows: The water pump (81) is started to supply water to the lower header (7). After the water flows into the lower header (7), it is evenly supplied to each heat exchange tube (3) through the water supply equalization cover plate (73). During this process, the water flow pattern is disrupted by the turbulence spiral blades (324) on the turbulence core rod (32). Under the disturbance of the multi-stage turbulence spiral blades (324), the water flow will form multiple small vortices for heat exchange. The combustion device (2) is started, and high-temperature flames and flue gas are generated in the combustion chamber (1) to exchange heat with the heat exchange tube (3). During this process, the high-temperature flue gas will rise until it collides with the smoke baffle (111), and then it will swirl and diffuse in the center of the combustion chamber (1) to form a vortex in the combustion chamber (1). The diffused high-temperature flue gas will rush towards the heat exchange tube (3), and then it will circulate along the spiral fins (31) on the side wall of the heat exchange tube (3) to exchange heat. When the high-temperature flue gas circulates to the side of the smoke baffle (9), it will flow out through the smoke outlet (91) on the smoke baffle (9), and then flow into the smoke box (4) through the smoke outlet (12) and be discharged. After the high-temperature flue gas exchanges heat with the heat exchange tube (3), it enters the smoke box (4) and exchanges heat with the water flowing through the condenser tube (832) again to preheat the water in the condenser tube (832). After the flue gas is cooled by heat exchange, it will be discharged from the exhaust port of the smoke box (4). As heating continues, the water in the heat exchange tube (3) absorbs heat and becomes saturated and evaporates. Due to the difference in density between the steam and water, the steam bubbles rise along the outer wall of the turbulence core rod (32), while the liquid water falls along the turbulence spiral blades (324). During the descent of the liquid water, it is guided by the turbulence spiral blades (324) to form small eddies again for heat exchange. After the bubbles rise in the heat exchange tube (3), they gather below the second block (332) and form wet saturated steam. Then the wet saturated steam continues to rise and enters the steam-water separator (33) through the third through hole (3321) for steam-water separation. The separated liquid water flows back to the bottom. After the steam undergoes initial separation through the steam-water separator (33), it enters the upper header (6) through the fourth through hole (3331), and then undergoes further separation through the steam-water separation cover plate (63) and steam-water separation partition plate (64) in the upper header (6), thereby forming dry saturated steam with a dryness of more than 98% and outputting it through the outlet pipe seat (61).

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