A fuel cell integrated thermal component device, system, and operating method

Abstract

The present invention discloses a fuel cell integrated thermal component device, system and working method, which solves the problems of large footprint and poor thermal insulation performance of integrated thermal components in the prior art, and has the beneficial effects of simple structure and convenient later maintenance. The specific scheme is as follows: A fuel cell integrated thermal component device includes a burner, the burner has a first side, a first heat exchanger is arranged to fit the first side of the burner, the first heat exchanger is arranged beyond the burner to be connected to the outlet end of the burner, the length of the first heat exchanger is less than the length of the first side, the second heat exchanger is overlapped with the reformer and arranged on the side of the first heat exchanger, and fits the first side of the burner and the first heat exchanger; the burner outlet is connected to the hot side inlet of the first heat exchanger, the cold side inlet of the first heat exchanger is connected to the cold side outlet of the second heat exchanger, and the branch pipe of the cold side outlet of the first heat exchanger is connected to the reformer.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal components for fuel cells, and in particular to a fuel cell integrated thermal component device, system and working method. Background Art

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

[0003] In fuel cells, in order to achieve energy recovery, an integrated design is usually adopted to integrate the burner with one or more heat exchangers, reformers, etc. to improve system efficiency;

[0004] The first integration solution in the prior art is to set the heat exchanger on the outside of the burner to form a nested structure. However, the nested structure is complex, difficult to install, occupies a large area, and needs to be disassembled one by one for later maintenance and protection, and then installed one by one after disassembly and maintenance;

[0005] The second integration solution is to directly integrate the burner with the rectangular heat exchanger, which occupies a large area, has low space utilization, and the components are relatively scattered, resulting in poor overall thermal insulation performance and low system heat utilization. Summary of the invention

[0006] In view of the shortcomings of the prior art, the object of the present invention is to provide a fuel cell integrated thermal component device, which is easy to manufacture, low in cost and convenient for later maintenance.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0008] A fuel cell integrated thermal component device comprises a burner, the burner having a first side surface, a first heat exchanger arranged in contact with the first side surface of the burner, the first heat exchanger being arranged beyond the burner to be connected with an outlet end of the burner, the length of the first heat exchanger being smaller than the length of the first side surface, and a second heat exchanger being arranged on a side of the first heat exchanger in overlap with a reformer and in contact with both the first side surface of the burner and the first heat exchanger;

[0009] The second heat exchanger is used for exchanging heat with the hot anode tail gas. The burner outlet is connected to the hot side inlet of the first heat exchanger, the cold side inlet of the first heat exchanger is connected to the cold side outlet of the second heat exchanger, and the branch pipe of the cold side outlet of the first heat exchanger is connected to the reformer. The reformer is introduced with the mixed fuel gas and the hot air output from the hot side outlet of the first heat exchanger. The mixed fuel gas and the hot air undergo a reforming catalytic reaction in the reformer and become reformed gas for discharge.

[0010] In the fuel cell integrated thermal component device as described above, the burner, the first heat exchanger, the second heat exchanger and the reformer are all rectangular components;

[0011] The second heat exchanger is arranged in close contact with the reformer;

[0012] The first heat exchanger, the second heat exchanger and the reformer are arranged flush with each other on the other side away from the first side of the burner.

[0013] In the fuel cell integrated thermal component device as described above, the cold side inlet of the first heat exchanger includes a first cold side inlet and a second cold side inlet, the first cold side inlet is connected to the cold side outlet of the second heat exchanger, and the second cold side inlet can be filled with air;

[0014] The cold side outlet of the first heat exchanger includes a first cold side outlet and a second cold side outlet, the first cold side outlet is connected to the hot side inlet of the reformer, and the second cold side outlet is connected to the outside.

[0015] A fuel cell integrated thermal component device as described above, wherein the cold side inlet and the cold side outlet of the first heat exchanger are placed on one diagonal line of the first heat exchanger, and the hot side inlet and the hot side outlet of the first heat exchanger are placed on another diagonal line;

[0016] The hot side inlet of the first heat exchanger is connected to the burner outlet through an outlet pipeline with an L-shaped cross section.

[0017] A fuel cell integrated thermal component device as described above, wherein the hot side inlet and the hot side outlet of the second heat exchanger are located on one diagonal line of the second heat exchanger, and the cold side inlet and the cold side outlet of the second heat exchanger are located on another diagonal line;

[0018] The hot side inlet and the hot side outlet of the reformer are located on one diagonal line of the reformer, and the cold side inlet and the cold side outlet of the reformer are located on another diagonal line.

[0019] In the fuel cell integrated thermal component device as described above, the second heat exchanger is arranged above the reformer, the first cold side outlet of the first heat exchanger is arranged lower than the second heat exchanger, and the first cold side outlet is engaged or docked with the hot side inlet of the reformer;

[0020] The hot side inlet, the hot side outlet, the cold side inlet and the cold side outlet of the second heat exchanger are all located at the top of the second heat exchanger.

[0021] A fuel cell integrated thermal component device as described above, wherein the cold side outlet of the second heat exchanger is connected to the first cold side inlet of the first heat exchanger through a first pipeline, and the first pipeline is placed above the first heat exchanger and the second heat exchanger;

[0022] The first cold side inlet, the second cold side outlet and the hot side outlet of the first heat exchanger are arranged on the top of the first heat exchanger, and the second cold side inlet is arranged on the side of the first heat exchanger.

[0023] In the fuel cell integrated thermal component device as described above, the second heat exchanger is arranged below the reformer, and the first cold side inlet of the first heat exchanger is engaged or butted with the cold side outlet of the second heat exchanger;

[0024] The first cold side outlet of the first heat exchanger is connected to the hot side inlet of the reformer through a second pipeline, and the second pipeline is placed on the top of the first heat exchanger;

[0025] The second cold side inlet, first cold side outlet and hot side outlet of the first heat exchanger are placed at the top of the first heat exchanger; the hot side inlet, hot side outlet, cold side inlet and cold side outlet of the reformer are all placed at the top of the reformer.

[0026] A fuel cell integrated thermal component device as described above, wherein the burner comprises a shell, a flame tube is arranged inside the shell, a burner outlet is arranged at one end of the flame tube, and a plurality of premixing components are arranged at the other end, the premixing components are annular components, and a distance is set between the premixing components and the shell, and the premixing components realize the mixing of fuel and air;

[0027] The burner is also provided with a second side, a third side and a fourth side respectively connected to the first side, the air intake pipe is arranged through the third side, the second side is provided with a cathode tail gas inlet, and the burner outlet is arranged on the fourth side.

[0028] A fuel cell system comprises the above-mentioned fuel cell integrated thermal component, wherein the cathode outlet of the fuel cell is connected to the burner, and the anode outlet of the fuel cell is connected to the hot side inlet of the second heat exchanger.

[0029] In a second aspect, the present invention further discloses a working method of a fuel cell integrated thermal component device, including the following contents:

[0030] The cathode tail gas generated at the cathode of the fuel cell enters the burner and undergoes a combustion reaction with the first fuel and / or the second fuel to obtain a burner hot tail gas;

[0031] The first cold air and the hot anode tail gas are heat exchanged in the second heat exchanger, and the hot anode tail gas is converted into cold anode tail gas;

[0032] The first cold air from the second heat exchanger mixes with the second cold air, enters the first heat exchanger, and exchanges heat with the hot exhaust gas of the burner. The hot exhaust gas of the burner becomes the cold exhaust gas of the burner, and the first cold air and the second cold air become the first hot air;

[0033] Part of the first hot air is discharged, and part of the first hot air enters the reformer to provide heat for the reformer. The mixed fuel gas undergoes a reforming reaction in the reformer to become reformed gas, and the first hot air becomes second hot air and is discharged.

[0034] The beneficial effects of the present invention are as follows:

[0035] 1) The burner in the present invention has a first side surface, through which the burner can be attached to the side of the first heat exchanger, the second heat exchanger and the reformer, so that the structure of the entire integrated heat component is relatively regular, which is convenient for the installation of various components, and the structure is simple. It can effectively reduce the floor space of the integrated heat component, and facilitate the later maintenance, and only the corresponding components need to be replaced; and it is convenient for the processing and manufacturing of various components, effectively reducing the processing cost, and improving the overall integration. While reducing the overall volume, the thermal insulation performance of the entire heat component can be improved, and the overall heat utilization rate can be effectively guaranteed; the second heat exchanger and the reformer are arranged to overlap each other up and down to further effectively utilize the space, so that the overall floor space is further reduced, and the overall thermal insulation performance is fully guaranteed;

[0036] Each component is a rectangular body, which is convenient for processing and manufacturing, and can also realize seamless assembly of the components.

[0037] 2) In the present invention, the second heat exchanger is used for heat exchange with the anode tail gas. After the heat exchange, the first cold air is mixed with the second cold air and enters the first heat exchanger to exchange heat with the tail gas of the burner. The hot air after the heat exchange enters the reformer. The hot air and the mixed fuel gas undergo a reforming catalytic reaction in the reformer and become reformed gas to be discharged, thereby effectively utilizing the heat source and improving the utilization rate of thermal energy.

[0038] 3) In the present invention, the second heat exchanger is arranged above the reformer, the first cold side outlet of the first heat exchanger is arranged lower than the second heat exchanger, and the first cold side outlet is snap-connected or docked with the hot side inlet of the reformer to ensure the fit between the side of the first heat exchanger and the reformer, and also facilitate the main pipelines to be arranged on the top side of the integrated thermal component device, which is convenient for the installation of the pipelines.

[0039] 4) In the present invention, the second heat exchanger is arranged below the reformer, and the first cold side inlet of the first heat exchanger is snap-connected or docked with the cold side outlet of the second heat exchanger to ensure that the side of the second heat exchanger fits the first heat exchanger, and it is also convenient to arrange the main pipelines on the top side of the integrated thermal component device to facilitate the installation of the pipelines; at the same time, the flow uniformity of the gas in and out of the heat exchanger and the reformer is improved, and the pressure loss of the gas flowing between different components is reduced.

[0040] 5) The burner structure of the present invention is reasonably arranged, and is effectively adapted to other heat exchangers and reformers. Moreover, the heat exchanger structure is reasonably arranged so that the main pipelines are placed on both sides and the top thereof, which facilitates the installation of the pipelines after the device is integrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0042] Figure 1 It is a schematic diagram of the principle of a fuel cell integrated thermal component device according to one or more embodiments of the present invention.

[0043] Figure 2 It is a schematic diagram of a fuel cell integrated thermal component device with the reformer at the bottom according to one or more embodiments of the present invention.

[0044] Figure 3 It is a specific schematic diagram of a fuel cell integrated thermal component device with the reformer at the bottom according to one or more embodiments of the present invention.

[0045] Figure 4 It is a schematic diagram of the position of the first cold side outlet of the first heat exchanger when the reformer is at the bottom in a fuel cell integrated thermal component device according to one or more embodiments of the present invention.

[0046] Figure 5 It is a schematic diagram of the internal gas flow direction of the first heat exchanger and the second heat exchanger when the reformer is at the bottom in a fuel cell integrated thermal component device according to one or more embodiments of the present invention.

[0047] Figure 6 It is a schematic diagram of the flow direction of gas inside the first heat exchanger and the reformer when the reformer is at the bottom in a fuel cell integrated thermal component device according to one or more embodiments of the present invention.

[0048] Figure 7 It is a schematic diagram of a fuel cell integrated thermal component device with the reformer on top according to one or more embodiments of the present invention.

[0049] Figure 8 It is a specific schematic diagram of a fuel cell integrated thermal component device with the reformer at the bottom according to one or more embodiments of the present invention.

[0050] Fig. 9 It is a schematic diagram of the position of the first cold side inlet when the reformer is at the bottom in a fuel cell integrated thermal component device according to one or more embodiments of the present invention.

[0051] Fig.10 It is a schematic diagram of the gas flow inside the first heat exchanger and the reformer when the reformer is at the bottom in a fuel cell integrated thermal component device according to one or more embodiments of the present invention.

[0052] Fig.11It is a schematic diagram of the internal gas flow of the first heat exchanger and the second heat exchanger when the reformer is at the bottom in a fuel cell integrated thermal component device according to one or more embodiments of the present invention.

[0053] Fig.12 It is an external schematic diagram of a burner in a fuel cell integrated thermal component device according to one or more embodiments of the present invention.

[0054] Fig.13 It is a schematic diagram of the interior of a burner in a fuel cell integrated thermal component device according to one or more embodiments of the present invention.

[0055] Fig.14 Schematic diagram of a premixing component in a fuel cell integrated thermal component device according to one or more embodiments of the present invention.

[0056] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0057] Wherein: 1. burner, 101. cathode tail gas inlet, 102. second inlet pipe, 103. first inlet pipe, 104. outlet pipe, 105. shell, 106. second side, 107. fourth side, 108. burner outlet;

[0058] 2. First heat exchanger, 201. Hot side inlet of first heat exchanger, 202. Hot side outlet of first heat exchanger, 203. First cold side inlet, 204. Second cold side inlet, 205. First cold side outlet, 206. Second cold side outlet;

[0059] 3. The second heat exchanger, 301. The hot side inlet of the second heat exchanger, 302. The hot side outlet of the second heat exchanger, 303. The cold side inlet of the second heat exchanger;

[0060] 4. reformer, 401. cold side inlet of reformer, 402. hot side outlet of reformer, 403. cold side outlet of reformer;

[0061] 5. flame tube, 501. lap plate, 502. first hole, 503. second hole, 504. gap;

[0062] 6. Premixing component, 601. Second fuel intake pipe, 602. First fuel intake pipe, 603. Swirl vane, 604. First fuel injection hole, 605. Fuel distribution chamber, 606. Second fuel injection hole. DETAILED DESCRIPTION

[0063] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0065] As introduced in the background technology, the integrated thermal component in the prior art has the problem of large footprint and poor thermal insulation performance. In order to solve the above technical problems, the present invention proposes a fuel cell integrated thermal component device.

[0066] Embodiment 1

[0067] In a typical embodiment of the present invention, reference is made to Figure 1 As shown, a fuel cell integrated thermal component device includes a burner 1, a first heat exchanger 2, a second heat exchanger 3 and a reformer 4, the burner 1 has a first side surface, the first heat exchanger 2 is arranged in contact with the first side surface of the burner 1, the first heat exchanger 2 is arranged beyond the burner 1 to be connected with the burner outlet 108, the length of the first heat exchanger 2 is less than the length of the first side surface, the second heat exchanger 3 and the reformer 4 are overlapped and arranged on the side of the first heat exchanger 2, and are in contact with the first side surface of the burner 1 and the first heat exchanger 2, and the second heat exchanger 3 and the reformer 4 are in contact with each other;

[0068] The burner outlet 108 is connected to the hot side inlet 201 of the first heat exchanger, the cold side inlet of the first heat exchanger 2 is connected to the cold side outlet of the second heat exchanger 3, and the branch pipe of the hot side outlet 202 of the first heat exchanger is connected to the reformer 4. The mixed fuel gas and the hot air output from the hot side outlet 202 of the first heat exchanger are introduced into the reformer 4. The mixed fuel gas and the hot air undergo a reforming catalytic reaction in the reformer and become reformed gas for discharge.

[0069] Taking the structural setting into consideration, the width of the first heat exchanger 2 is greater than the width of the burner 1 , and the height of the first heat exchanger 2 is greater than the height of the second heat exchanger 3 .

[0070] In this embodiment, the first heat exchanger 2 is at the same height as the burner 1 , and the height of the second heat exchanger 3 and the reformer 4 after being stacked is the same as the height of the first heat exchanger 2 .

[0071] Among them, the burner 1, the first heat exchanger 2, the second heat exchanger 3 and the reformer 4 are all rectangular components. The first heat exchanger 2 is arranged on the first side of the burner 1, and the length of the first heat exchanger 2 is smaller than the length of the burner 1. The second heat exchanger 3 and the reformer 4 are overlapped and arranged on the side of the first side of the burner 1, and are arranged on the side of the first heat exchanger 2.

[0072] It is easy to understand that the cold side inlet of the first heat exchanger 2 includes a first cold side inlet 203 and a second cold side inlet 204, the first cold side inlet 203 is connected to the cold side outlet of the second heat exchanger, and the second cold side inlet 204 can allow air to pass through; the cold side outlet of the first heat exchanger includes a first cold side outlet 205 and a second cold side outlet 206, the first cold side outlet 205 is connected to the hot side inlet of the reformer 4, and the second cold side outlet 206 is connected to the outside.

[0073] In this embodiment, in order to facilitate processing and manufacturing and ensure the integration effect, reference Figure 3 As shown, the cold side inlet and the cold side outlet of the first heat exchanger 2 are placed on one diagonal line of the first heat exchanger 2, and the hot side inlet and the hot side outlet of the first heat exchanger 2 are placed on another diagonal line; the first heat exchanger 2 is arranged beyond the burner 1, and the hot side inlet 201 of the first heat exchanger is connected to the burner outlet 108 through an outlet pipe 104 with an L-shaped cross-section.

[0074] In addition, correspondingly, the hot side inlet 301 of the second heat exchanger and the hot side outlet 302 of the second heat exchanger are located on one diagonal line of the second heat exchanger, and the cold side inlet 303 of the second heat exchanger and the cold side outlet of the second heat exchanger 3 are located on another diagonal line; the hot side inlet 401 of the reformer 4 and the hot side outlet 402 of the reformer are located on one diagonal line of the reformer 4, and the cold side inlet 401 of the reformer and the cold side outlet 403 of the reformer are located on another diagonal line.

[0075] It should be noted that the stacking mode of the second heat exchanger 3 and the reformer 4 can be changed, so that the integrated heat component device has a variety of layout modes:

[0076] The first method: Reference Figure 2 As shown, the second heat exchanger 3 is arranged above the reformer 4, and the first cold side outlet 205 of the first heat exchanger 2 is arranged below the second heat exchanger 3. Figure 4 As shown, the first cold side outlet 205 is connected or docked with the hot side inlet of the reformer 4 by snapping. Preferably, the two are snapped and connected, and the snapping can be realized in the form of convex parts and concave parts, which not only ensures that the two are connected without gaps, but also ensures the connection effect; the hot side inlet 301, the hot side outlet, the cold side inlet and the cold side outlet of the second heat exchanger are all located at the top of the second heat exchanger 3;

[0077] The cold side outlet of the second heat exchanger 3 is connected to the first cold side inlet 203 of the first heat exchanger through a first pipeline, and the first pipeline is placed above the first heat exchanger 2 and the second heat exchanger 3; the first cold side inlet 203, the second cold side outlet 206, and the hot side outlet of the first heat exchanger 2 are placed on the top of the first heat exchanger 2, and the second cold side inlet 204 is placed on the side of the first heat exchanger 2.

[0078] The second method: Reference Figure 7 and Figure 8 As shown, the second heat exchanger 3 is arranged below the reformer 4, referring to Fig. 9 As shown, the first cold side inlet 203 of the first heat exchanger 2 is connected or docked with the cold side outlet of the second heat exchanger 3, preferably in the form of a snap connection, which can be realized in the form of a convex part and a concave part; the first cold side outlet 205 of the first heat exchanger 2 is connected with the hot side inlet of the reformer 4 through a second pipeline, and the second pipeline is placed on the top of the first heat exchanger 2;

[0079] The second cold side inlet 204, the first cold side outlet 205, and the hot side outlet of the first heat exchanger 2 are placed on the top of the first heat exchanger 2; the hot side inlet, hot side outlet, cold side inlet, and cold side outlet of the reformer are all placed on the top of the reformer 4;

[0080] For burner 1, refer to Fig.12 and Fig.13 As shown, the burner 1 includes a shell 105, a flame tube 5 is arranged inside the shell 105, a burner outlet 108 is arranged at one end of the flame tube 5, and a plurality of premixing components 6 are arranged at the other end. The premixing components 6 are annular components, and a distance is set between the premixing components 6 and the shell 105. The premixing components 6 realize the mixing of fuel and air.

[0081] The burner 1 is also provided with a second side 106, a third side and a fourth side 107 which are respectively vertically connected to the first side. The first fuel inlet pipe 602 and the second fuel inlet pipe 601 are both arranged through the third side. The inlet pipe is arranged on the outside of the third side. The second side 106 is provided with a cathode exhaust gas inlet port 101, and the burner outlet 108 is arranged on the fourth side 107. The second side 106, the third side and the fourth side 107 are located in the same circle of the shell 105, which avoids the inlet pipe, the cathode exhaust gas inlet port 101 and the burner outlet 108 of the burner 1 being arranged on the first side, which is beneficial to the placement of the pipelines and will not affect the placement of the entire integrated component device in a certain space.

[0082] The burner flame tube 5 includes two opposing support plates, each of which is provided with a plurality of first holes 502 so that part of the air can enter the combustion chamber to cool the high-temperature combustion gas. The support plate includes a plurality of lap plates 501, which are overlapped and fixedly connected on the outer side of the inner lap plate 501 in sequence. A gap 504 communicating with the combustion chamber is formed at the overlap between two adjacent lap plates 501. Some support plates are provided with a plurality of second holes 503 on the outer side of the gap 504, and part of the air enters the gap 504 through the second holes 503 to form a multi-layer air film to cool the lap plates 501. The last lap plate 501 is overlapped with the burner outlet 108, and the side of the support plate is connected through a side plate. One end of the support plate is connected to the end plate, and an opening is provided on the end plate for the installation of the premixing component 6.

[0083] To facilitate processing and manufacturing, the lap plate 501 is made of a stamped plate. A part of the lap plate 501 is provided with a step-like structure facing the combustion chamber at the overlap with another lap plate 501, and a gap 504 is formed between the step-like structure and the other lap plate 501. The second hole 503 is provided at the other lap plate 501, so that air enters the gap 504 through the second hole 503 and adheres to the inner surface of the part of the lap plate 501, effectively isolating the high-temperature flame in the combustion chamber from the lap plate 501, thereby playing a cooling role.

[0084] refer to Fig.14 As shown, the premixing component 6 includes a fuel distribution chamber 605, which is an annular member. The fuel distribution chamber 605 is spaced apart from the third side of the shell. The fuel distribution chamber 605 is arranged around the first fuel inlet pipe 602. The fuel distribution chamber 605 is connected to the second fuel inlet pipe 601. The first fuel inlet pipe 602 passes through the shell 105 and is connected to the first inlet pipe 103. The second fuel inlet pipe 601 passes through the shell and is connected to the second inlet pipe 102. The first inlet pipe 103 and the second inlet pipe 102 are parallel to each other and are arranged on the outside of the third side of the shell 105 and along the length direction of the third side. The shell 105 is also provided with a cathode exhaust gas inlet port 101, and the cathode exhaust gas enters between the combustion chamber and the shell 105. Swirl blades 603 are arranged inside the first fuel inlet pipe 602 and the fuel distribution chamber 605. Part of the cathode exhaust gas enters the premixing component 6 and enters the flame tube after mixing with the fuel. The cathode exhaust gas inlet port 101 is located on the side of the premixing component 6.

[0085] Among them, a plurality of second fuel nozzles 606 are arranged on the inner wall of the fuel distribution chamber 605 close to the flame tube, and a plurality of first fuel nozzles 604 are arranged on the side wall of the first fuel inlet pipe 602. The first fuel nozzles 604 are located between the swirl blades 603 and the second fuel nozzles 606, and the first fuel nozzles 604 and the second fuel nozzles 606 are arranged at a distance.

[0086] It is easy to understand that a hot pipe and a cold pipe are arranged inside the first heat exchanger 2, both of which are S-shaped and arranged alternately. The first cold side inlet 203 and the second cold side inlet 204 of the first heat exchanger 2 are converged inside the first heat exchanger 2 and connected with the cold pipe. The cold pipe is divided into two at the outlet to form a first cold side outlet 205 and a second cold side outlet 206.

[0087] The same is true for the interior of the second heat exchanger 3, which also includes hot pipes and cold pipes arranged in an S shape and staggered;

[0088] As for the reformer 4, the reformer 4 also adopts a rectangular body structure, and the internal structure of the reformer 4 is the same as the structure of the reformer in the prior art, that is, a hot pipe is arranged inside the reformer 4 for introducing hot air, and a cold pipe is also arranged for introducing mixed fuel gas. The hot pipeline and the cold pipeline are S-shaped and the two are arranged alternately, and a catalyst is arranged in the cold pipeline.

[0089] The cathode tail gas generated at the cathode of the fuel cell enters the burner 1, and undergoes a combustion reaction with the first fuel and / or the second fuel to obtain the hot tail gas of the burner. The first cold air and the hot anode tail gas undergo heat exchange in the second heat exchanger 3, and the hot anode tail gas becomes the cold anode tail gas. The first cold air coming out of the second heat exchanger 3 mixes with the second cold air, enters the first heat exchanger 2, and undergoes heat exchange with the hot tail gas of the burner, and the hot tail gas of the burner becomes the cold tail gas of the burner. The first cold air and the second cold air become the first hot air. A portion of the first hot air enters the reformer 4 to provide heat for the reformer 4. The mixed fuel gas undergoes a reforming reaction in the reformer 4 to become the reformed gas, and the first hot air becomes the second hot air.

[0090] Embodiment 2

[0091] This embodiment provides a fuel cell system, including a fuel cell integrated thermal component as described in Embodiment 1, wherein the cathode outlet of the fuel cell is connected to the burner 1, and the anode outlet of the fuel cell is connected to the hot side inlet 301 of the second heat exchanger.

[0092] Embodiment 3

[0093] This embodiment discloses a working method of a fuel cell integrated thermal component device, including the following contents:

[0094] Specifically, the cathode tail gas enters the burner 1 from the cathode tail gas inlet, the first fuel enters the burner 1 from the first inlet pipe 103, and / or the second fuel enters the burner 1 from the second inlet pipe 102, mixes with the cathode tail gas and burns to obtain the burner high-temperature tail gas;

[0095] The hot anode tail gas enters the second heat exchanger 3 from the hot side inlet 301 of the second heat exchanger, and performs heat exchange with the first cold air flowing from the cold side inlet 303 of the second heat exchanger. The hot anode tail gas becomes cold anode tail gas and comes out from the hot side outlet 302 of the second heat exchanger. The first cold air enters the first cold side inlet 203 of the first heat exchanger 2 from the cold side outlet of the second heat exchanger 3, and the second cold air is supplemented through the second cold side inlet 204 of the first heat exchanger 2, so as to adjust the flow rate of the cold air entering the first heat exchanger 2.

[0096] The first cold air enters the first heat exchanger 2 from the first cold side inlet 203 of the first heat exchanger 2, and the second cold air enters the first heat exchanger 2 from the second cold side inlet 204. The burner hot exhaust gas enters the first heat exchanger 2 from the hot side inlet 201 of the first heat exchanger. The two perform heat exchange, and the burner hot exhaust gas becomes the burner cold exhaust gas, which is discharged from the hot side outlet 202 of the first heat exchanger. The first cold air and the second cold air become the first hot air, a part of which directly enters the reformer 4 from the first cold side outlet 205 of the first heat exchanger 2, and a part of which is discharged from the second cold side outlet 206 of the first heat exchanger 2. Among them, the burner outlet 108 is rectangular and is directly connected to the hot side inlet 201 of the first heat exchanger, which is also rectangular, without the need for a gas distribution structure.

[0097] It is easy to understand that the hot side outlet 402 of the reformer is aligned with the first cold side outlet 205 of the first heat exchanger 2, a portion of the first hot air enters from the hot side outlet 402 of the reformer to provide a heat source for the reformer 4, and the mixed fuel gas enters the reformer 4 from the cold side inlet 401 of the reformer to perform a reforming reaction. The first hot air is discharged from the hot side outlet 402 of the reformer to become the second hot air, and the mixed fuel gas becomes the reformed gas and is discharged from the cold side outlet 403 of the reformer.

[0098] The hot and cold side gases of the first heat exchanger 2 and the second heat exchanger 3 are countercurrent, and the two gases of the reformer 4 are cocurrent. In order to adapt to the layout of the first heat exchanger 2, the positions of the second heat exchanger 3 and the reformer 4 need to be changed up and down to match the inlet and outlet positions of the gases of different components.

[0099] For the scheme with reformer 4, the gas flow directions in the first heat exchanger 2, the second heat exchanger 3, and the reformer 4 are as follows: Figure 5 and Figure 6 As shown, the second heat exchanger 3 is placed above the reformer 4, and the first cold air coming out of the second heat exchanger 3 is introduced into the first cold side inlet 203 of the first heat exchanger through the first pipeline.

[0100] For the scheme where the reformer 4 is on top, the gas flows in the first heat exchanger 2, the second heat exchanger 3, and the reformer 4 are as follows: Fig.10 , Fig.11As shown, the reformer 4 is placed above the second heat exchanger 3, and the second hot air at the cold side outlet of the first heat exchanger 2 is introduced into the hot side inlet of the reformer 4 through the second pipeline.

[0101] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fuel cell integrated thermal component device, characterized in that: The burner comprises a burner, the burner has a first side surface, a first heat exchanger is arranged in contact with the first side surface of the burner, the first heat exchanger is arranged beyond the burner to be connected with the outlet end of the burner, the length of the first heat exchanger is less than the length of the first side surface, and the second heat exchanger is arranged on the side of the first heat exchanger in overlap with the reformer and is in contact with the first side surface of the burner and the first heat exchanger; The second heat exchanger is used to exchange heat with the hot anode tail gas, the burner outlet is connected to the hot side inlet of the first heat exchanger, the cold side inlet of the first heat exchanger is connected to the cold side outlet of the second heat exchanger, the branch pipe of the cold side outlet of the first heat exchanger is connected to the reformer, and the reformer is fed with the mixed fuel gas and the hot air output from the hot side outlet of the first heat exchanger; The burner, the first heat exchanger, the second heat exchanger and the reformer are all rectangular components; The second heat exchanger is arranged in close contact with the reformer; The first heat exchanger, the second heat exchanger and the reformer are arranged flush with each other on the side away from the first side of the burner; The cold side inlet of the first heat exchanger comprises a first cold side inlet and a second cold side inlet, the first cold side inlet is connected to the cold side outlet of the second heat exchanger, and the second cold side inlet can be filled with air; The cold side outlet of the first heat exchanger includes a first cold side outlet and a second cold side outlet, the first cold side outlet is connected to the hot side inlet of the reformer, and the second cold side outlet is connected to the outside; The cold side inlet and the cold side outlet of the first heat exchanger are placed on one diagonal line of the first heat exchanger, and the hot side inlet and the hot side outlet of the first heat exchanger are placed on another diagonal line; The hot side inlet of the first heat exchanger is connected to the burner outlet through an outlet pipeline with an L-shaped cross section; The hot side inlet and the hot side outlet of the second heat exchanger are located on one diagonal line of the second heat exchanger, and the cold side inlet and the cold side outlet of the second heat exchanger are located on another diagonal line; The hot side inlet and the hot side outlet of the reformer are located on one diagonal line of the reformer, and the cold side inlet and the cold side outlet of the reformer are located on another diagonal line; The second heat exchanger is arranged above the reformer, the first cold side outlet of the first heat exchanger is arranged lower than the second heat exchanger, and the first cold side outlet is engaged or butted with the hot side inlet of the reformer; The hot side inlet, hot side outlet, cold side inlet and cold side outlet of the second heat exchanger are all located at the top of the second heat exchanger; The cold side outlet of the second heat exchanger is connected to the first cold side inlet of the first heat exchanger through a first pipeline, and the first pipeline is placed above the first heat exchanger and the second heat exchanger; The first cold side inlet, the second cold side outlet, and the hot side outlet of the first heat exchanger are placed on the top of the first heat exchanger, and the second cold side inlet is placed on the side of the first heat exchanger; The second heat exchanger is arranged below the reformer, and the first cold side inlet of the first heat exchanger is connected or butted with the cold side outlet of the second heat exchanger; The first cold side outlet of the first heat exchanger is connected to the hot side inlet of the reformer through a second pipeline, and the second pipeline is placed on the top of the first heat exchanger; The second cold side inlet, first cold side outlet and hot side outlet of the first heat exchanger are placed at the top of the first heat exchanger; the hot side inlet, hot side outlet, cold side inlet and cold side outlet of the reformer are all placed at the top of the reformer.

2. A fuel cell integrated thermal component device according to claim 1, characterized in that: The burner comprises a shell, a flame tube is arranged inside the shell, a burner outlet is arranged at one end of the flame tube, and a plurality of premixing components are arranged at the other end, the premixing components are annular components, and a distance is set between the premixing components and the shell, and the premixing components realize the mixing of fuel and air; The burner is also provided with a second side, a third side and a fourth side respectively connected to the first side, the air intake pipe is arranged through the third side, the second side is provided with a cathode tail gas inlet, and the burner outlet is arranged on the fourth side.

3. A fuel cell system, characterized in that: A fuel cell integrated thermal component device comprising any one of claims 1-2, wherein the cathode outlet of the fuel cell is connected to the burner, and the anode outlet of the fuel cell is connected to the hot side inlet of the second heat exchanger.

4. A working method of a fuel cell integrated thermal component device according to any one of claims 1-2, characterized in that: It includes the following: The cathode tail gas generated at the cathode of the fuel cell enters the burner and undergoes a combustion reaction with the first fuel and / or the second fuel to obtain a burner hot tail gas; The first cold air and the hot anode tail gas are heat exchanged in the second heat exchanger, and the hot anode tail gas is converted into cold anode tail gas; The first cold air from the second heat exchanger mixes with the second cold air, enters the first heat exchanger, and exchanges heat with the hot exhaust gas of the burner. The hot exhaust gas of the burner becomes the cold exhaust gas of the burner, and the first cold air and the second cold air become the first hot air; Part of the first hot air is discharged, and part of the first hot air enters the reformer to provide heat for the reformer. The mixed fuel gas undergoes a reforming reaction in the reformer to become reformed gas, and the first hot air becomes second hot air and is discharged.

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