Combustor integrated with evaporator heat component

Abstract

The utility model discloses a kind of combustor and evaporator integrated type heat components, belong to fuel cell system technical field, including shell, shell side fixedly set diffuser, combustor is set in shell;Combustor includes fuel premix body, tail gas pipe, combustion body;Combustion body includes combustion body shell and combustion body inner shell, combustion body inner shell is fixedly connected with annular support plate away from one end of diffuser;Evaporator is set on annular support plate side away from combustor;Evaporator includes water evaporator coil made of heat-resistant steel material;Evaporator is set catalytic combustor away from one side of diffuser.Combustor and catalytic combustor between heat-resistant steel material evaporator are set, in starting stage, high-temperature flue gas heat is generated from combustor, generate larger flow water vapor, meet operating requirement;When steady operation, high-temperature flue gas can be avoided to evaporator burn;Evaporator is arranged using the cooling space between combustor and catalytic combustor, save space so that equipment integration is higher.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fuel cell system technical field, concretely relates to a combustor and evaporator integrated heat component. BACKGROUND

[0002] The statements in this section merely provide background information related to the utility model and do not necessarily constitute prior art.

[0003] In the fuel cell system, the combustor needs to bear the role of heat supply in the system starting process and tail gas treatment in the steady state process. In the prior art, such as patent CN116592347A discloses a fuel cell stack fuel side tail gas combustor and its control method, which is provided with two combustion bodies. In the fuel cell system starting condition, fuel and air are fully premixed and combusted in the fuel combustion chamber, and then the tail gas of the fuel cell system is introduced. When the combustible component content of the tail gas is high, flame combustion is carried out in the first combustion body. When the combustible component content of the tail gas is low, the tail gas of the fuel cell system, fuel and air can still be stably catalytically combusted in the catalytic carrier.

[0004] In the above-mentioned scheme, due to the influence of the catalytic carrier on the temperature resistance, there is a space for cooling and mixing high-temperature flue gas between the flame combustion high-temperature zone and the catalytic carrier, resulting in a relatively long overall space.

[0005] In the fuel cell system, an evaporator also needs to be provided to gasify liquid water into water vapor for purging the system or as raw material for the water reformer. For example, patent CN111226337A discloses a combustor for a fuel cell system with two reaction chambers. The combustor is arranged in the fuel cell system, and the evaporator is arranged downstream of the combustor.

[0006] Placing the evaporator in the low-temperature zone or directly using a water atomizing device can realize the conversion of water from liquid to gas. However, during the purging process of the fuel cell system, a large amount of water vapor is required, and these schemes cannot meet the use requirements. UTILITY MODEL CONTENT

[0007] To solve the above-mentioned problems, the utility model provides a combustor and evaporator integrated heat component. The evaporator is arranged between the combustor and the catalytic combustor, and the water evaporator coil is made of heat-resistant steel material. In the starting stage, the evaporator takes heat from the high-temperature flue gas generated by the combustor, can produce a large amount of water vapor to meet the operation requirements. In the steady state operation, the evaporator can be prevented from being burned by the high-temperature flue gas. Since the evaporator is arranged in the cooling space between the combustor and the catalytic combustor, the space is saved, and the equipment integration is higher.

[0008] To achieve the above-mentioned purposes, the utility model adopts the following technical scheme:

[0009] A combustor and evaporator integrated heat component, comprising a shell, an expansion port fixedly arranged on one side of the shell, and a combustor arranged in the shell;

[0010] The combustor comprises a combustor outer shell and a combustor inner shell arranged coaxially and divided into a cylindrical section and a horn section; the combustor inner shell is open at both ends and divided into a tail gas combustion cavity and a fuel combustion cavity; the length of the cylindrical section of the combustor outer shell is less than that of the combustor inner shell; the combustor inner shell is fixedly connected to an annular support plate at an end away from the expansion port;

[0011] An evaporator is arranged on the side of the annular support plate away from the combustor; the evaporator comprises a water evaporator coil made of heat-resistant steel; a catalytic combustor is arranged on the side of the evaporator away from the expansion port, and the catalytic combustor comprises a catalytic carrier.

[0012] Preferably, the outer wall of the water evaporator coil is connected and fixed to the shell through a plurality of connecting rods, and the water evaporator coil connects an evaporator inlet and an evaporator outlet.

[0013] Preferably, the fuel premixing body comprises a cylindrical premixing body outer shell, a premixing body middle shell and a premixing body inner shell arranged coaxially; a fuel inlet is arranged on the premixing body outer shell; and a plurality of communication holes are uniformly arranged on the circumferential surface of the premixing body middle shell.

[0014] Preferably, the cylindrical section of the combustor outer shell is fixedly connected and closed with the cylindrical section of the combustor inner shell; the connection between the horn section of the combustor outer shell and the cylindrical section is fixedly connected with the premixing body outer shell, and the end of the horn section is fixedly connected with the premixing body middle shell to form a mixed gas distribution cavity.

[0015] Preferably, the end of the premixing body outer shell and the end of the premixing body middle shell are flush and closed on the side close to the expansion port, and a fuel distribution cavity is formed between the premixing body outer shell, the premixing body middle shell and the combustor outer shell; the ends of the premixing body middle shell and the premixing body inner shell are flush and open, and a fuel premixing cavity, a first air inlet and a first air outlet are formed between the premixing body middle shell and the premixing body inner shell.

[0016] Preferably, a plurality of premixing swirl vanes are arranged between the premixing body middle shell and the premixing body inner shell on the side of the communication holes facing the first air outlet.

[0017] Preferably, the tail gas pipe is arranged in the premixing body inner shell to form a swirl air cavity open at both ends therebetween, and a plurality of central swirl vanes are arranged in the swirl air cavity; the swirl air cavity is communicated with the tail gas combustion cavity; and a plurality of tail gas injection holes are arranged on the end of the tail gas pipe extending into the tail gas combustion cavity.

[0018] Preferably, the combustion body inner shell is provided with a plurality of mixed gas injection holes in the circumference thereof in the combustion body outer shell; the combustion body inner shell is connected with a spark plug outside the combustion body outer shell, and the combustion body inner shell is provided with a plurality of cooling holes in the circumference thereof; and the outer shell forms a cooling channel together with the premixing body outer shell, the combustion body outer shell and the annular support plate.

[0019] Preferably, the tail gas pipe is connected with a tail gas inlet pipe which penetrates the outer shell and is fixedly connected with the outer shell; the outer shell is provided with a spark plug insertion hole; and the pressure expansion port is connected with an air pipe.

[0020] Preferably, an annular heat insulation hole plate is arranged between the catalytic carrier and the evaporator, and a heat insulation pad is arranged between the outer side of the catalytic carrier and the outer shell.

[0021] Compared with the prior art, the integrated heat component has the advantages and positive effects that:

[0022] The evaporator is arranged between the combustor and the catalytic combustor, the water evaporator coil is made of heat-resistant steel material, in the starting stage, the evaporator takes heat from the high-temperature flue gas generated by the combustor, can generate a large flow of water vapor, and meets the operation requirement; in the steady-state operation, the burning of the high-temperature flue gas on the evaporator can be avoided; since the evaporator is arranged in the cooling space between the combustor and the catalytic combustor, the space is saved, and the equipment integration is higher. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings constituting a part of the specification of the present application are used to provide a further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application.

[0024] Figure 1 is a sectional view of the integrated heat component of the embodiment of the present application;

[0025] Figure 2 is a front view of the integrated heat component of the embodiment of the present application;

[0026] Figure 3 is a right view of the integrated heat component of the embodiment of the present application;

[0027] Figure 4 is a working schematic view of the integrated heat component of the embodiment of the present application;

[0028] In the drawings:

[0029] 1, housing; 11, diffuser; 111, air pipe; 12, spark plug hole; 2, combustor; 21, fuel premix body; 211, premix body outer shell; 212, premix body middle shell; 213, premix body inner shell; 214, fuel inlet; 215, fuel distribution cavity; 216, fuel premix cavity; 217, first air inlet; 218, communication hole; 219, premix swirler; 22, exhaust pipe; 221, central swirler; 222, swirler air cavity; 223, exhaust injection hole; 224, exhaust inlet pipe; 23, combustion body; 231, combustion body outer shell; 232, combustion body inner shell; 233, mixture distribution cavity; 234, mixture injection hole; 235, exhaust combustion cavity; 236, fuel combustion cavity; 237, cooling hole; 238, annular support plate; 24, spark plug; 3, evaporator; 31, water evaporator coil; 32, evaporator inlet; 33, evaporator outlet; 4, catalytic combustor; 41, catalytic carrier; 42, heat insulation pad; 43, heat insulation hole plate; 44, flue gas outlet. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0031] The present application will be described in detail below with reference to the drawings. The combustor and evaporator integrated heat component disclosed in the present embodiment comprises a housing 1, a diffuser 11 fixedly arranged on one side of the housing 1, and air entering the housing 1 through the diffuser 11. A combustor 2, an evaporator 3, and a catalytic combustor 4 are sequentially arranged in the housing 1 from the side of the diffuser 11. Figure 1 As shown in FIG. 1, the combustor 2 comprises a fuel premix body 21, an exhaust pipe 22, and a combustion body 23. The fuel premix body 21 is used for fuel distribution and mixing, and delivers the mixed gas to the combustion body 23. The exhaust pipe 22 is used for delivering exhaust gas to the combustion body.

[0032] As shown in FIG. 2, the fuel premix body 21 comprises a premix body outer shell 211, a premix body middle shell 212, and a premix body inner shell 213. The premix body outer shell, the premix body middle shell, and the premix body inner shell are all cylindrical and coaxially arranged. The premix body middle shell 212 is arranged in the premix body outer shell 211, and the premix body inner shell 213 is arranged in the premix body middle shell 212. The premix body outer shell 211 is provided with a fuel inlet 214, which penetrates through the housing 1 and is fixedly connected with the housing 1. Figure 1 As shown in FIG. 3, the fuel premix body 21 comprises a fuel distribution cavity 215, a fuel premix cavity 216, a first air inlet 217, a communication hole 218, and a premix swirler 219.

[0033] Figure 1 As shown in FIG. 4, the combustion body 23 comprises a combustion body outer shell 231, a combustion body inner shell 232, a mixture distribution cavity 233, a mixture injection hole 234, an exhaust combustion cavity 235, a fuel combustion cavity 236, a cooling hole 237, and an annular support plate 238.

[0034] As shown in FIG. 5, the exhaust pipe 22 comprises a central swirler 221, a swirler air cavity 222, and an exhaust injection hole 223. Figure 1 ​As shown, the combustion body 23 comprises a coaxially arranged combustion body outer shell 231 and a combustion body inner shell 232, both of which comprise a cylindrical section and a horn section; the length of the cylindrical section of the combustion body outer shell 231 is less than that of the combustion body inner shell 232, and the cylindrical section of the combustion body outer shell 231 is fixedly connected with the cylindrical section of the combustion body inner shell 232 and is closed. The horn section of the combustion body outer shell 231 is fixedly connected with the premixing body outer shell 211 at the connection between the horn section and the cylindrical section, and the end of the horn section is fixedly connected with the premixing body middle shell 212, forming a mixed gas distribution cavity 233.

[0035] As shown, Figure 1 in the direction of the diffuser 11, the ends of the premixing body outer shell 211 and the premixing body middle shell 212 are flush and closed, the other end of the premixing body outer shell 211 is fixedly connected with the combustion body outer shell 231 and is closed, and the premixing body outer shell 211, the premixing body middle shell 212 and the combustion body outer shell 231 form a fuel distribution cavity 215. The two ends of the premixing body middle shell 212 and the premixing body inner shell 213 are flush and not closed, and the premixing body middle shell 212 and the premixing body inner shell 213 form a fuel premixing cavity 216 and a first air inlet and a first air outlet; a plurality of communication holes 218 are uniformly arranged on the periphery of the premixing body middle shell 212, and the communication holes 218 connect the fuel distribution cavity 215 and the fuel premixing cavity 216; the mixed gas distribution cavity 233 is communicated with the fuel premixing cavity 216 through the first air outlet.

[0036] Fuel enters the fuel distribution cavity 215 from the fuel air inlet 214, then enters the fuel premixing cavity 216 through the communication holes 218, air enters the fuel premixing cavity 216 from the first air inlet 217, and fuel and air are mixed in the fuel premixing cavity to form mixed gas. As shown, Figure 1 on the side of the communication holes 218 towards the first air outlet between the premixing body middle shell 212 and the premixing body inner shell 213, a plurality of premixing swirl vanes 219 are arranged; after the mixed gas passes through the second air swirl vane, fuel and air can be fully mixed.

[0037] As shown, Figure 1 the inside of the combustion body is an exhaust gas combustion cavity 235 and a fuel combustion cavity 236; a plurality of mixed gas injection holes 234 are arranged on the periphery of the combustion body inner shell 232 in the combustion body outer shell 231, the mixed gas injection holes 234 communicate the mixed gas distribution cavity and the fuel combustion cavity 236; the mixed gas formed by the mixing of fuel and air in the fuel premixing cavity enters the mixed gas distribution cavity from the fuel premixing cavity and enters the fuel combustion cavity through the mixed gas injection holes.

[0038] As shown, Figure 1 the exhaust pipe 22 is arranged in the premixing body inner shell 213, a plurality of central swirl vanes 221 are arranged between the exhaust pipe 22 and the premixing body inner shell 213, and the exhaust pipe 22 and the premixing body inner shell 213 form a swirl air cavity 222 with both ends open; asFigure 1 As shown in the figure, the combustion body inner shell 232 is open at both ends, the end of the horn section of the combustion body inner shell 232 is fixedly connected with the premixing body inner shell 213, the swirl air cavity 222 is communicated with the tail gas combustion cavity 235, and air can directly enter the tail gas combustion cavity 235 from the swirl air cavity 222.

[0039] As shown in the figure, Figure 1 As shown in the figure, the tail gas pipe 22 extends into the tail gas combustion cavity 235, and a tail gas injection hole 223 is arranged at the end of the tail gas pipe extending into the tail gas combustion cavity 235; the number of the tail gas injection holes is multiple, and the multiple tail gas injection holes are arranged in the circumferential direction of the tail gas pipe. The fuel side tail gas of the stack is radially injected into the tail gas combustion cavity, the air swirl enters the tail gas combustion cavity, the fuel side tail gas of the stack and the air are diffusedly combusted, and a sheet-shaped flame is formed.

[0040] As shown in the figure, Figure 1 As shown in the figure, the end of the combustion body inner shell 232 away from the combustion body outer shell 231 is fixedly connected with the annular support plate 238, and the outer shell 1, the premixing body outer shell 211, the combustion body outer shell 231 and the annular support plate 238 form a cooling channel; outside the combustion body outer shell 231, the spark plug 24 is connected with the combustion body inner shell 232, and the spark plug penetrates through the combustion body inner shell 232 and is inserted into the inside of the combustion body inner shell 232. It can be understood that a hole through which the spark plug 24 is inserted is arranged on the shell of the combustion body inner shell 232, the spark plug releases a pulse spark after the premixed fuel injection hole, and the start-up combustion and flame detection of the burner are realized. A plurality of cooling holes 237 are arranged in the circumferential direction of the combustion body inner shell 232, the air entering the cooling channel enters the combustion body inner shell 232 from the cooling holes 237, the high-temperature flue gas is cooled and cooled, and the cooled high-temperature flue gas flows out from the end of the combustion body inner shell 232 connected with the annular support plate 238.

[0041] As shown in the figure, Figure 2 As shown in the figure, the tail gas pipe 22 is connected with the tail gas inlet pipe 224, and the tail gas inlet pipe 224 penetrates through the outer shell 1 and is fixedly connected with the outer shell 1. The spark plug insertion hole 12 is arranged on the outer shell 1, and the spark plug is inserted into the outer shell 1 and then inserted into the combustion body inner shell. The diffuser port 11 is connected with the air pipe 111, air is input into the diffuser port through the air pipe 111, and the air enters the inside of the outer shell 1 through the diffuser port. The air is divided into three parts, one part enters the swirl air cavity 222 and then enters the tail gas combustion cavity; one part enters the fuel premixing cavity through the first air inlet 217, mixes with the fuel, and then enters the mixed gas distribution cavity; and one part enters the cooling channel formed by the outer shell 1, the premixing body outer shell 211, the combustion body outer shell 231 and the annular support plate 238. In this embodiment, the gas in the air pipe 111 is the stack air side tail gas and ordinary air, the ordinary air is used in the start-up process, and the stack air side tail gas is used in the steady-state process.

[0042] As shown in the figure, Figure 1As shown, an evaporator 3 is installed on the side of the annular support plate 238 away from the burner 2. The evaporator includes a water evaporator coil 31, which is made of heat-resistant steel. In this embodiment, the heat-resistant steel uses existing technology and can withstand temperatures above 800°C. The outer wall of the water evaporator coil 31 is connected and fixed to the outer casing 1 by multiple connecting rods, and the inner wall of the water evaporator coil 31 is heated by high-temperature flue gas. It can be understood that the high-temperature flue gas is annular, and after being cooled by the air injected through the cooling holes, it heats the water inside the water evaporator coil 31.

[0043] like Figure 1 , Figure 2 As shown, the water evaporator coil 31 is connected to the evaporator inlet 32 ​​and the evaporator outlet 33. Both the evaporator inlet 32 ​​and the evaporator outlet 33 extend through the outer casing 1 and are fixedly connected to it. In this embodiment, water enters the water evaporator coil 31 from the evaporator inlet 32, and water vapor is discharged from the evaporator outlet 33. The heat exchange method between the water evaporator coil and the high-temperature flue gas is countercurrent heat exchange, which can be extended to cocurrent heat exchange in other embodiments.

[0044] like Figure 1 As shown, a catalytic burner 4 is installed on the side of the evaporator 3 away from the diffuser. The catalytic burner 4 adopts existing technology and includes a catalytic carrier 41. The high-temperature flue gas after heat exchange with the evaporator can preheat the catalytic carrier. After the catalytic carrier 41 is heated, the fuel side exhaust gas, fuel, and air of the fuel stack can still undergo stable catalytic combustion within the catalytic carrier. The flue gas after combustion is discharged through the flue gas outlet 44.

[0045] like Figure 1 , Figure 3 As shown, to prevent the high-temperature catalyst support 41 from damaging the metal material of the outer shell 1, a heat insulation pad 42 and a heat insulation perforated plate 43 are arranged around the catalyst support 41 to reduce heat transfer between the catalyst support and the metal material. The heat insulation perforated plate 43 is annular and is disposed between the catalyst support 41 and the evaporator, while the heat insulation pad 42 is circumferentially disposed between the outer side of the catalyst support 41 and the heat insulation perforated plate 43 and the outer shell 1. It is understood that the perforation form of the heat insulation perforated plate is not limited to round holes, and may include various forms such as strip holes and square holes.

[0046] like Figure 4 As shown, in this embodiment, the integrated thermal component is placed after the fuel cell stack exhaust gas outlet. During startup, the fuel reacts with the air-side exhaust gas of the fuel cell stack to generate high-temperature flue gas. This high-temperature flue gas provides heat to the evaporator and then heats the catalytic carrier in the catalytic combustor. During steady-state operation, the fuel-side exhaust gas and the air-side exhaust gas of the fuel cell stack mix in the combustor, then flow through the evaporator and into the catalytic combustor to undergo a combustion reaction, further increasing the exhaust gas temperature.

[0047] During the starting process, air and fuel enter the shell, the fuel and air release heat in the burner to generate high-temperature flue gas, and the liquid water in the evaporator evaporates into water vapor, which sweeps the fuel side pipeline, reducing the risk of explosion of the fuel and air mixture in the fuel side pipeline during the starting process of the system; at the same time, the evaporation of the liquid water in the evaporator can take away the heat of the high-temperature flue gas, avoiding the burning damage of the high-temperature flue gas to the evaporator coil.

[0048] When the sweeping process is changed to the steady-state process, the liquid water flow gradually decreases; the role of water vapor changes from sweeping to providing initial raw materials for the water reformer; at this time, the fuel side exhaust gas and fuel can still release heat in the burner, and with the decrease of the fuel, the burner gradually extinguishes and changes to the role of the mixer; During this process, the flow of liquid water gradually decreases to 0.

[0049] In the steady-state process, there is no liquid water in the evaporator, and the temperature of the stack tail flowing through the evaporator is only 500-800℃, which will not exceed the working temperature of the selected heat-resistant steel material, and can be operated for a long time.

[0050] The fuel cell system starting process and the steady-state process have large differences in the amount of water vapor required, and a large flow of water vapor is required during the starting process, so the heat exchange capacity of the evaporator is large, and in the conventional scheme, the evaporator only exchanges heat from a low-grade heat source, resulting in a large evaporator heat exchange area; The integrated heat component of the embodiment can take heat from the high-temperature flue gas, and can generate a large flow of water vapor to meet the operating requirements; and in the steady-state operation, it can also avoid the burning of the evaporator by high-temperature flue gas. At the same time, the evaporator is arranged in the cooling space between the traditional burner and the catalytic burner in the embodiment, and the equipment integration is high.

[0051] Although the specific embodiments of the utility model have been described above with reference to the drawings, it is not a limitation on the protection scope of the utility model, and those skilled in the art should understand that various modifications or deformations made by those skilled in the art without creative labor on the basis of the technical scheme of the utility model are still within the protection scope of the utility model.

Claims

1. A combustor and evaporator integrated hot component, characterized by, The shell is provided with an expansion port on one side and a combustor inside; the combustor comprises a fuel premixing body, an exhaust pipe and a combustion body; The combustion body comprises a combustion body outer shell and a combustion body inner shell arranged coaxially, both of which are divided into a cylindrical section and a horn section; the combustion body inner shell is open at both ends and is divided into an exhaust combustion cavity and a fuel combustion cavity; the length of the cylindrical section of the combustion body outer shell is less than that of the combustion body inner shell; the combustion body inner shell is fixedly connected to the annular support plate at the end away from the expansion port; An evaporator is arranged on the side of the annular support plate away from the combustor; the evaporator comprises a water evaporator coil made of heat-resistant steel; a catalytic combustor is arranged on the side of the evaporator away from the expansion port; the catalytic combustor comprises a catalytic carrier.

2. A combustor and vaporizer integrated hot component as in claim 1, wherein, The outer wall of the water evaporator coil is connected to the shell by a plurality of connecting rods; the water evaporator coil is connected to the inlet and outlet of the evaporator.

3. A combustor and vaporizer integrated hot component as in claim 1, wherein, The fuel premixing body comprises a cylindrical premixing body outer shell, a premixing body middle shell and a premixing body inner shell arranged coaxially; the premixing body outer shell is provided with a fuel inlet; a plurality of communication holes are evenly arranged on the circumferential surface of the premixing body middle shell.

4. A combustor and vaporizer integrated hot component as in claim 3, wherein, The premixing body outer shell is fixedly connected to the junction of the horn section and the cylindrical section of the combustion body outer shell; the cylindrical section of the combustion body outer shell is fixedly connected to the cylindrical section of the combustion body inner shell and is closed; the end of the horn section is fixedly connected to the premixing body middle shell, forming a mixed gas distribution cavity.

5. A combustor and vaporizer integrated hot component as in claim 3, wherein, The end of the premixing body outer shell and the premixing body middle shell on the side close to the expansion port is flush and closed; the premixing body outer shell, the premixing body middle shell and the combustion body outer shell form a fuel distribution cavity; the premixing body middle shell and the premixing body inner shell are open at both ends, forming a fuel premixing cavity, a first air inlet and a first air outlet therebetween.

6. A burner and evaporator integrated hot component according to claim 5, wherein, A plurality of premixing swirl vanes are arranged between the premixing body middle shell and the premixing body inner shell on the side of the communication holes facing the first air outlet.

7. A combustor and vaporizer integrated hot component as in claim 3, wherein, The exhaust pipe is arranged in the premixing body inner shell, forming a swirl air cavity open at both ends therebetween; a plurality of central swirl vanes are arranged in the swirl air cavity; the swirl air cavity is communicated with the exhaust combustion cavity; a plurality of exhaust injection holes are arranged on the end of the exhaust pipe extending into the exhaust combustion cavity.

8. A combustor and vaporizer integrated hot component as in claim 3, wherein, A plurality of mixed gas injection holes are arranged on the circumferential surface of the combustion body inner shell in the combustion body outer shell; a spark plug is connected to the combustion body inner shell outside the combustion body outer shell; a plurality of cooling holes are arranged on the circumferential surface of the combustion body inner shell; the shell, the premixing body outer shell, the combustion body outer shell and the annular support plate form a cooling channel.

9. A combustor and vaporizer integrated hot component as in claim 1, wherein, The exhaust pipe is connected to an exhaust inlet pipe; the exhaust inlet pipe is arranged in the shell and is fixedly connected to the shell; a spark plug insertion hole is arranged on the shell; the expansion port is connected to an air pipe.

10. A combustor and vaporizer integrated hot component as in claim 1, wherein, An annular heat insulation hole plate is arranged between the catalytic carrier and the evaporator; heat insulation pads are arranged between the outer side of the catalytic carrier and the heat insulation hole plate and the shell.

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