Gasifier

Abstract

The utility model discloses a vaporizer which comprises a vaporizer body, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, the main body part of the first medium pipeline and the main body part of the second medium pipeline are located in the gasification space, and a first medium flowing through the first medium pipeline exchanges heat with a second medium flowing through the second medium pipeline through a third medium located in the gasification space; and the heater is used for the third medium so that the third medium exchanges heat with the second medium. According to the gasifier provided by the utility model, the heater is arranged, so that the gasifier has a preheating function, and when the first medium does not flow through the first medium pipeline, the heater is used for heating the third medium to indirectly heat the second medium, so that the second medium flowing through the second medium pipeline can be effectively heated; the second medium exchanges heat with the first medium and the heater through the third medium so that the second medium flowing through the gasification space can be evenly heated.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a gasifier. Background Art

[0002] When applying hydrogen energy to the vehicle industry chain, we must not only consider breakthroughs in related technologies such as fuel cell systems, but also consider technological innovations in on-board hydrogen storage systems during the commercialization of hydrogen vehicles.

[0003] The on-board hydrogen storage system supplies hydrogen to the fuel cell system. When the fuel cell is working, the temperature requirement of hydrogen is 0-40 degrees Celsius, while the temperature of liquid hydrogen in the liquid hydrogen storage bottle is around -253 degrees Celsius. The temperature difference in the middle requires the use of a vaporizer to heat the liquid hydrogen into gaseous hydrogen so that the temperature of the hydrogen reaches the required temperature of the fuel cell.

[0004] In the related technology, the gasifier is a module between the liquid hydrogen storage bottle and the fuel cell system, and its gasification efficiency and gasification quality are particularly important. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a gasifier with better gasification efficiency and gasification quality.

[0006] The gasifier according to the utility model comprises:

[0007] A gasifier body, wherein a gasification space is defined in the gasifier body;

[0008] A first medium pipeline and a second medium pipeline, wherein the main part of the first medium pipeline and the main part of the second medium pipeline are located in the gasification space, and the first medium flowing through the first medium pipeline and the second medium flowing through the second medium pipeline exchange heat through a third medium located in the gasification space;

[0009] The heater is used for heating the third medium so that the third medium exchanges heat with the second medium.

[0010] According to the gasifier of the utility model, a heater is provided so that the gasifier has a preheating function, so that when the first medium does not flow through the first medium pipeline, the heater is used to heat the third medium to indirectly heat the second medium, thereby ensuring that the second medium flowing through the second medium pipeline can be effectively heated. In addition, since the third medium is located in the gasification space and the main part of the second medium pipeline is located in the gasification space, in the process of the second medium flowing through the gasification space along the second medium pipeline, the second medium exchanges heat with the first medium and the heater respectively through the third medium, so that the second medium flowing through the gasification space is evenly heated.

[0011] In some examples of the present invention, a plurality of adjacent and independent subspaces are formed in the gasification space along the first direction of the gasifier, each subspace is provided with a main part of the second medium pipeline, and the subspace is provided with a third medium.

[0012] In some examples of the present invention, the gasifier further includes: a plurality of partitions, wherein the plurality of partitions are arranged at intervals along the first direction to separate the gasification space into a plurality of subspaces.

[0013] In some examples of the present invention, the third medium is a phase change material.

[0014] In some examples of the present invention, along the first direction, the phase change temperatures of the phase change materials in a plurality of adjacent subspaces increase or decrease in sequence.

[0015] In some examples of the present invention, the second medium pipeline includes a plurality of straight pipe sections and a plurality of curved pipe sections, and both ends of each curved pipe section are respectively connected to a straight pipe section.

[0016] In some examples of the present invention, there are multiple second medium pipelines, and the multiple second medium pipelines are arranged along the circumference of the first medium pipeline, and two adjacent second medium pipelines are spaced apart.

[0017] In some examples of the present invention, the gasifier further includes a first heat sink, which is disposed in the gasification space and fixedly connected to the gasifier body.

[0018] In some examples of the present invention, the first heat sink includes a main heat sink and at least one auxiliary heat sink, the auxiliary heat sink is fixed to the main heat sink, and the main heat sink is fixedly connected to the gasifier body.

[0019] In some examples of the present invention, the first heat sink is connected between the first medium pipeline and the gasifier body.

[0020] In some examples of the present invention, the heater is disposed in the second medium pipeline.

[0021] In some examples of the present invention, the gasifier further includes: a second heat sink, which is disposed in the first medium pipeline and located in the gasification space.

[0022] According to the gasifier of the utility model, a heater is provided so that the gasifier has a preheating function, so that when the first medium does not flow through the first medium pipeline, the heater is used to heat the third medium to indirectly heat the second medium, thereby ensuring that the second medium flowing through the second medium pipeline can be effectively heated. In addition, since the third medium is located in the gasification space and the main part of the second medium pipeline is located in the gasification space, in the process of the second medium flowing through the gasification space along the second medium pipeline, the second medium exchanges heat with the first medium and the heater respectively through the third medium, so that the second medium flowing through the gasification space is evenly heated. Therefore, compared with the prior art, the gasification efficiency and gasification quality of the gasifier according to the utility model are better.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a front view of a gasifier according to an embodiment of the utility model;

[0026] Figure 2 is a cross-sectional view of a gasifier according to an embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of the coordination of the first medium pipeline, the second medium pipeline, the first heat sink, the second heat sink and the second housing according to an embodiment of the utility model from one perspective;

[0028] Figure 4 It is a schematic diagram of the coordination of the first medium pipeline, the second medium pipeline, the first heat sink, the second heat sink and the second housing from another perspective according to an embodiment of the utility model;

[0029] Figure 5 It is a schematic diagram of the coordination of the first medium pipeline, the second medium pipeline, the first partition plate, the second partition plate and the second heat sink according to an embodiment of the utility model.

[0030] Reference numerals:

[0031] Gasifier 100;

[0032] Gasifier body 1; gasification space 10; first space 10a; second space 10b; third space 10c;

[0033] Subspace 10d;

[0034] First housing 11; first interface 110; second housing 12; third housing 13; second interface 130;

[0035] First medium pipeline 2; second medium pipeline 3; straight pipe section 31; curved pipe section 32;

[0036] First heat sink 41; main heat sink 41a; auxiliary heat sink 41b; second heat sink 42;

[0037] A first partition plate 51 and a second partition plate 52 . DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the field of hydrogen vehicles, the hydrogen required for the operation of the fuel cell system is provided by the on-board hydrogen storage system. The on-board hydrogen storage systems installed on vehicles of different types or models are different. Some vehicles are equipped with gas hydrogen bottles, some vehicles are equipped with liquid hydrogen bottles, and some vehicles are equipped with gas hydrogen bottles and liquid hydrogen bottles. If the vehicle is equipped with a liquid hydrogen bottle, the liquid hydrogen in the liquid hydrogen bottle needs to be converted into the gaseous hydrogen required by the fuel cell system through a vaporizer.

[0040] When the fuel cell system is working, the temperature requirement of hydrogen is 0-40 degrees Celsius, and the temperature of liquid hydrogen in the liquid hydrogen bottle is about -253 degrees Celsius. The inventor found in the research that in the initial stage of gasification of hydrogen in the gasifiers currently on the market, the temperature inside the existing gasifiers is relatively low, resulting in the inability of hydrogen to fully absorb heat in the initial stage to reach the required temperature of the fuel cell, and the gasification efficiency and gasification quality are poor. When hydrogen that does not meet the temperature standard enters the fuel cell system, it cannot fully participate in the reaction, causing waste and reducing the overall power generation efficiency of the fuel cell.

[0041] Based on this, the utility model provides a gasifier 100 with better gasification efficiency and gasification quality.

[0042] Reference below Figure 1-Figure 5 A vaporizer 100 according to an embodiment of the utility model is described. The vaporizer 100 can be applied to a vehicle-mounted hydrogen storage system, but the utility model is not limited thereto. The vaporizer 100 can be applied to other systems that require the vaporizer 100. For example, the vaporizer 100 can be applied to a marine hydrogen storage system. This application is described by taking the application of the vaporizer 100 to a vehicle-mounted hydrogen storage system as an example.

[0043] like Figure 1 and Figure 2As shown, the gasifier 100 according to the embodiment of the utility model includes a gasifier body 1, a first medium pipeline 2, a second medium pipeline 3 and a heater. A gasification space 10 is defined in the gasifier body 1. The main part of the first medium pipeline 2 and the main part of the second medium pipeline 3 are located in the gasification space 10. The first medium flowing through the first medium pipeline 2 and the second medium flowing through the second medium pipeline 3 exchange heat through the third medium located in the gasification space 10. The heater is used to heat the third medium so that the third medium exchanges heat with the second medium. By setting the heater, the gasifier has a preheating function. When the first medium does not flow through the first medium pipeline, the heater is used to heat the third medium to indirectly heat the second medium, ensuring that the second medium flowing through the second medium pipeline can be effectively heated. In addition, the second medium exchanges heat with the first medium and the heater respectively through the third medium, so that the second medium flowing through the gasification space is evenly heated.

[0044] like Figure 2 As shown, in some embodiments, taking the application of the gasifier 100 to a vehicle-mounted hydrogen storage system as an example, the vehicle-mounted hydrogen storage system is suitable for connection with a fuel cell system, the fuel cell system has a fuel cell, one end of the first medium pipeline 2 is suitable for connection with the exhaust gas outlet end of the fuel cell, and the high-temperature exhaust gas generated by the fuel cell can flow into the first medium pipeline 2, that is, the first medium flowing through the first medium pipeline 2 can be constructed as the high-temperature exhaust gas generated by the fuel cell.

[0045] The on-board hydrogen storage system may also have a hydrogen storage device for storing liquid hydrogen. One end of the second medium pipeline 3 is suitable for being connected to the hydrogen storage device. Liquid hydrogen can flow into the second medium pipeline 3, that is, the first medium flowing through the first medium pipeline 2 can be constructed as hydrogen. It should be supplemented that the liquid hydrogen needs to be heated before flowing into the fuel cell for electrochemical reaction to convert the low-temperature liquid hydrogen into gaseous hydrogen, and the temperature of the hydrogen needs to reach the required temperature of the fuel cell to ensure the working stability of the fuel cell.

[0046] Since the main part of the first medium pipeline 2 and the main part of the second medium pipeline 3 are located in the gasification space 10, and the gasification space 10 has a third medium, when the first medium flows through the first medium pipeline 2 and the second medium flows through the second medium pipeline 3, the heat of the first medium is transferred to the second medium through the third medium to increase the temperature of the second medium, that is, the heat of the high-temperature exhaust gas is transferred to the liquid hydrogen and / or gaseous hydrogen through the third medium, so that the liquid hydrogen and / or gaseous hydrogen absorbs heat and increases in temperature. As a result, the liquid hydrogen can absorb heat and increase in temperature to form gaseous hydrogen during the process of flowing through the second medium pipeline 3, and the temperature of the hydrogen can reach the required temperature of the fuel cell.

[0047] In addition, when the first medium does not flow through the first medium pipeline 2, for example, before the fuel cell generates high-temperature exhaust gas, and when no exhaust gas flows through the first medium pipeline 2, the heater works to generate heat. Under the heating action of the heater, the third medium absorbs the heat generated by the heater to increase the temperature of the third medium, and then the heat of the third medium is transferred to the second medium flowing through the second medium pipeline 3 to increase the temperature of the second medium, for example, the third medium heats the hydrogen flowing through the second medium pipeline 3. Therefore, by providing a heater, the gasifier 100 has a preheating function, so that the hydrogen in the second medium pipeline 3 is heated before the fuel cell generates exhaust gas, so that the hydrogen flowing into the second medium pipeline 3 can be effectively gasified and reach the required temperature of the fuel cell, which can not only shorten the startup time of the fuel cell, so that the fuel cell can quickly reach a stable working state, but also ensure the stable operation of the fuel cell.

[0048] It should be noted that, by arranging the third medium to absorb the heat of the heater and heat the second medium, the heater can be started to heat the third medium before the second medium flows through the second medium pipeline 3, so that the third medium has sufficient heat. When the second medium flows through the second medium pipeline 3, the third medium heats the second medium. Thus, the gasifier 100 has a heater, which can heat the third medium in advance, so that the hydrogen flowing into the second medium pipeline 3 can be effectively gasified and reach the required temperature of the fuel cell, which can shorten the startup time of the fuel cell, so that the fuel cell can quickly reach a stable working state, and at the same time can ensure the stable operation of the fuel cell.

[0049] In some embodiments, after the fuel cell generates exhaust gas, the heater can stop working, and then the exhaust gas generated by the fuel cell can be used to heat the third medium, so that the exhaust gas flowing through the first medium pipeline 2 passes through the third medium to heat the hydrogen flowing through the second medium pipeline 3. By providing a heater, the gasifier 100 has a preheating function to heat the hydrogen in the second medium pipeline 3 before the fuel cell generates high-temperature exhaust gas, so that the hydrogen flowing into the second medium pipeline 3 can be effectively gasified and reach the required temperature of the fuel cell, which can not only shorten the startup time of the fuel cell, so that the fuel cell can quickly reach a stable working state, but also ensure the stable operation of the fuel cell.

[0050] In some embodiments, the heater is arranged in the second medium pipeline 3, and the heater heats the second medium flowing through the second medium pipeline 3, or the heater is arranged in the gasifier body 1, and the heater heats the third medium stored in the gasification space 10, and then the heat is transferred to the second medium pipeline 3 through the third medium, and then the heat is transferred to the second medium located in the second medium pipeline 3, thereby achieving the effect of the heater being used to heat the second medium, or achieving the effect of the heater being used to heat the third medium in the gasification space 10 so that the third medium heats the second medium.

[0051] In some embodiments, the third medium can be constructed as a phase change material or a gas or a liquid, and the third medium can store heat so that the third medium can store heat to exchange heat with the second medium. It should be noted that a phase change material refers to a material that changes its state and provides latent heat without changing its temperature. The process of changing physical properties is called a phase change process. At this time, the phase change material will absorb or release a large amount of latent heat.

[0052] In some embodiments of the utility model, the third medium is a phase change material, the third medium can be transformed from solid to gaseous during the heat absorption process, and the third medium can store a large amount of heat. In addition, since the third medium is arranged in the gasification space 10, and the main part of the second medium pipeline 3 is located in the gasification space 10, when the third medium absorbs heat and vaporizes, the gaseous third medium is coated on the outside of the second medium pipeline 3, so that the third medium can uniformly heat the second medium flowing through the second medium pipeline 3, thereby achieving the effect of uniform heating of the second medium flowing through the gasification space.

[0053] In summary, according to the gasifier 100 of the embodiment of the utility model, a heater is provided so that the gasifier 100 has a preheating function, so that when the first medium does not flow through the first medium pipeline, the heater is used to heat the third medium to indirectly heat the second medium, thereby ensuring that the second medium flowing through the second medium pipeline 3 can be effectively heated. In addition, since the third medium is located in the gasification space 10 and the main part of the second medium pipeline 3 is located in the gasification space 10, in the process of the second medium flowing through the gasification space 10 along the second medium pipeline 3, the second medium exchanges heat with the first medium and the heater respectively through the third medium, so that the second medium flowing through the gasification space 10 is evenly heated. Therefore, compared with the prior art, the gasification efficiency and gasification quality of the gasifier 100 according to the embodiment of the utility model are better.

[0054] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the gasifier body 1 may include a first shell 11 , a second shell 12 and a third shell 13 , and the second shell 12 is fixedly connected between the first shell 11 and the third shell 13 to form the gasifier body 1 , so that a gasification space 10 is defined in the gasifier body 1 .

[0055] like Figure 2 As shown, in some embodiments, the first shell 11 defines a first space 10a, the second shell 12 defines a second space 10b, the third shell 13 defines a third space 10c, and the gasification space 10 includes the first space 10a, the second space 10b and the third space 10c.

[0056] like Figure 1 and Figure 2 As shown, in some embodiments, the first shell 11 forms a first interface 110 connected to the first space 10a, the third shell 13 forms a second interface 130 connected to the third space 10c, the entire structure of the first medium pipeline 2 is located in the gasification space 10, and the first medium pipeline 2 is penetrated into the second space 10b, one end of the first medium pipeline 2 is connected to the first space 10a, and the other end of the first medium pipeline 2 is connected to the third space 10c, so that the first interface 110 and the second interface 130 are connected.

[0057] During the process of the first medium flowing through the gasification space 10 through the first medium pipeline 2, the first medium can flow into the first space 10a through the first interface 110, and then the first medium flows through the second space 10b through the first medium pipeline 2 and flows into the third space 10c, and finally the first medium is discharged from the third space 10c through the second interface 130, thereby achieving the effect of the first medium flowing through the gasification space 10 and exchanging heat with the second medium of the second medium pipeline 3.

[0058] In some embodiments, the first interface 110 is suitable for connecting with the exhaust gas outlet end of the fuel cell, thereby achieving the effect of connecting one end of the first medium pipeline 2 with the exhaust gas outlet end of the fuel cell, and the third interface is suitable for connecting with the environment so that the exhaust gas flows through the gasification space 10 and is discharged into the environment.

[0059] In addition, in some embodiments, the main portion of the first medium pipeline 2 is located in the gasification space 10, and along the length direction of the first medium pipeline 2, one end of the first medium pipeline 2 is penetrated through the first shell 11, and the other end of the first medium pipeline 2 is penetrated through the third shell 13, that is, the first medium pipeline 2 is penetrated through the gasifier body 1, so that the main portion of the first medium pipeline 2 is located in the gasification space 10.

[0060] In some embodiments, one end of the first medium pipeline 2 is suitable for being connected to the exhaust gas outlet end of the fuel cell, and the other end of the first medium pipeline 2 is suitable for being connected to the environment, so that the exhaust gas is discharged from the exhaust gas outlet end and flows into the first medium pipeline 2, and the exhaust gas flows along the first medium pipeline 2 through the gasification space 10 to exchange heat with the second medium of the second medium pipeline 3, and then the exhaust gas is discharged into the environment.

[0061] like Figure 2 As shown, in some embodiments, the main part of the second medium pipeline 3 is located in the gasification space 10 , and along the extension direction of the second medium pipeline 3 , both ends of the second medium pipeline 3 extend out of the second shell 12 .

[0062] In some embodiments, along the extension direction of the second medium pipeline 3, one end of the second medium pipeline 3 is suitable for being connected to a hydrogen storage device for storing liquid hydrogen, and the other end of the second medium pipeline 3 is suitable for being connected to a fuel cell, and the liquid hydrogen flows into the second medium pipeline 3 through one end of the second medium pipeline 3, and in the process of the liquid hydrogen flowing along the second medium pipeline 3 and flowing through the gasification space 10, the liquid hydrogen is heated and gasified, so that the liquid hydrogen forms gaseous hydrogen, and then the gaseous hydrogen flows into the fuel cell through the other end of the second medium pipeline 3.

[0063] In addition, in some embodiments, the second shell 12 can be formed with a third interface and a fourth interface, and the entire structure of the second medium pipeline 3 is located in the gasification space 10. Along the extension direction of the second medium pipeline 3, one end of the second medium pipeline 3 is fixedly connected to the second shell 12 and communicated with the third interface, and the other end of the second medium pipeline 3 is fixedly connected to the second shell 12 and communicated with the fourth interface, so that the second medium pipeline 3 is located in the gasification space 10 and communicates with the third interface and the fourth interface, and the second medium can flow into the second medium pipeline 3 through the third interface and be discharged from the second medium pipeline 3 from the fourth interface.

[0064] In some embodiments, the third interface is suitable for connecting to a hydrogen storage device, and the fourth interface is suitable for connecting to a fuel cell, so that liquid hydrogen flows into the second medium pipeline 3 through the third interface. During the flow of liquid hydrogen along the second medium pipeline 3, the liquid hydrogen flows through the vaporization space 10 to be heated and vaporized, and the liquid hydrogen forms gaseous hydrogen, and then the gaseous hydrogen flows along the second medium pipeline 3 to the fourth interface and flows into the fuel cell.

[0065] In some embodiments of the present invention, Figure 2 As shown, the heater is disposed on the gasifier body 1 , and the heater is used to heat the gasifier body 1 .

[0066] In some embodiments, the heater is provided on the gasifier body 1 and is located outside the gasification space 10. When the heater is working, the heater heats the gasifier body 1, and then the heat is transferred through the gasifier body 1 to heat up the third medium located in the gasification space 10. Since the main part of the second medium pipeline 3 is located in the gasification space 10, the heat can be transferred to the second medium pipeline 3 through the third medium, and the third medium exchanges heat with the second medium to heat up the second medium.

[0067] Alternatively, in some embodiments, the heater is disposed in the gasifier body 1 and is located inside the gasification space 10. When the heater is working, the heater can directly heat the third medium located in the gasification space 10, and then the heat is transferred to the second medium pipeline 3 through the third medium, and the third medium exchanges heat with the second medium to increase the temperature of the second medium.

[0068] In some embodiments of the present invention, Figure 2-Figure 5 As shown, there are a plurality of second medium pipelines 3 , and by providing a plurality of second medium pipelines 3 , the flow rate of the second medium flowing through the gasifier 100 can be increased.

[0069] In some embodiments of the present invention, Figure 4 As shown, several second medium pipes 3 are arranged along the circumference of the first medium pipe 2, so that the several second medium pipes 3 are arranged around the first medium pipe 2, and two adjacent second medium pipes 3 are spaced apart. By arranging several second medium pipes 3 along the circumference of the first medium pipe 2 and two adjacent second medium pipes 3 are spaced apart, the heat of the first medium in the first medium pipe 2 can be uniformly applied to the several second medium pipes 3, so that the second medium in the several second medium pipes 3 is uniformly heated.

[0070] In some embodiments, one end of several second medium pipelines 3 is suitable for connecting to a hydrogen storage device for storing liquid hydrogen, and the other ends of several second medium pipelines 3 are suitable for connecting to a fuel cell, so that the liquid hydrogen stored in the hydrogen storage device can be heated to form gaseous hydrogen after passing through the gasifier 100 and flow into the fuel cell.

[0071] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the gasifier 100 may further include a first heat sink 41 , which is disposed in the gasification space 10 and fixedly connected to the gasifier body 1 .

[0072] like Figure 3 and Figure 4As shown, in some embodiments, the heater heats the vaporizer body 1. By providing a first heat sink 41 in the vaporization space 10, and the first heat sink 41 is fixedly connected to the vaporizer body 1, the heat generated by the heater can be transferred to the first heat sink 41 through the vaporizer body 1 to release the heat, thereby increasing the heat exchange area, so that the third medium in the vaporization space 10 can fully absorb heat and quickly heat up, and at the same time, the heating efficiency of the heater to the second medium is improved, so that the second medium can fully absorb heat.

[0073] In addition, in some embodiments of the present invention, the first heat sink 41 is connected between the first medium pipeline 2 and the gasifier body 1. When the first medium flows through the first medium pipeline 2, the heat of the first medium can be transferred to the first heat sink 41 through the first medium pipeline 2 to release heat, thereby increasing the heat exchange area, so that the third medium in the gasification space 10 can fully absorb heat and quickly heat up, and at the same time, the heating efficiency of the first medium to the second medium is improved, so that the second medium can fully absorb heat.

[0074] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the gasifier 100 may have a plurality of first heat sinks 41. By providing a plurality of first heat sinks 41, the heat exchange area may be further increased so that the second medium can fully absorb heat. Figure 3 and Figure 4 As shown, in some embodiments of the present invention, the gasifier 100 is taken as an example having four first heat sinks 41 , but the present invention is not limited thereto, and the gasifier 100 may have two or three or other numbers of first heat sinks 41 .

[0075] In some embodiments of the present invention, Figure 4 As shown, in the circumferential direction of the first medium pipeline 2, each first heat sink 41 is located between two adjacent second medium pipelines 3, so that the heat released by the first heat sink 41 can act on the two adjacent second medium pipelines 3 at the same time, so that the second medium in the two second medium pipelines 3 fully absorbs the heat released by the first heat sink 41. In some embodiments of the utility model, as Figure 4 As shown, the first heat sink 41 may include a main heat sink 41a and at least one auxiliary heat sink 41b, the auxiliary heat sink 41b is connected to the main heat sink 41a, the heat of the main heat sink 41a can be transferred to the auxiliary heat sink 41b to release heat, and the heat of the first heat sink 41 can be released jointly by the main heat sink 41a and the auxiliary heat sink 41b, thereby increasing the heat exchange area of ​​the first heat sink 41.

[0076] In some embodiments, Figure 4As shown, the main heat sink 41a is suitable for connecting with the vaporizer body 1 to achieve the effect of connecting the first heat sink 41 with the vaporizer body 1. In some embodiments, the heater heats the vaporizer body 1, and the heat of the heater is transferred to the main heat sink 41a through the vaporizer body 1, and then the heat can be further transferred to the auxiliary heat sink 41b, thereby achieving the effect of increasing the heat exchange area, so that the third medium in the vaporization space 10 can fully absorb heat, the third medium is quickly heated, and at the same time, the heating efficiency of the heater on the second medium is improved, so that the second medium can fully absorb heat.

[0077] In addition, in some embodiments, one end of the main heat sink 41a is connected to the vaporizer body 1, and the other end of the main heat sink 41a is connected to the first medium pipeline 2, so that the first heat sink 41 is connected between the first medium pipeline 2 and the vaporizer body 1, thereby improving the heat exchange efficiency between the first medium and the second medium.

[0078] In some embodiments of the present invention, Figure 2 As shown, the heater is disposed in the second medium pipeline 3, and the heater works to heat the second medium in the second medium pipeline 3. In some embodiments, the heater can be disposed outside the second medium pipeline 3, and the heat generated by the heater is transferred to the second medium pipeline 3, and then the heat is transferred to the second medium in the second medium pipeline 3 through the second medium pipeline 3, and the heater indirectly heats the second medium. At the same time, the heater also heats the third medium in the gasification space 10, so that the third medium can store heat, so that the second medium in the second medium pipeline 3 can be evenly heated.

[0079] In some embodiments of the present invention, Figure 2 As shown, along the first direction of the gasifier 100, the first direction is Figure 2 In the X direction shown in , a plurality of adjacent and independent subspaces 10d are formed in the gasification space 10, each of which is provided with the main part of the second medium pipeline 3, and the subspace 10d is provided with the third medium, and the third medium in each subspace 10d exchanges heat with the corresponding part of the second medium pipeline 3 to achieve the effect of heat exchange between the third medium and the second medium. Figure 2 As shown, in some embodiments of the present invention, a plurality of sub-spaces 10d are formed in the second space 10b as an example.

[0080] In some embodiments of the utility model, the third medium is a phase change material, which has good heat storage capacity. By selecting a phase change material as the third medium, the heat of the first medium flowing through the first medium pipeline 2 and the heat generated by the heater are effectively stored in the gasification space 10, so that the heat can be fully used to heat the second medium flowing through the second medium pipeline 3, thereby reducing the heat loss of the gasifier 100.

[0081] In some embodiments of the present invention, Figure 2 As shown, along the first direction, the phase change temperatures of the phase change materials in a plurality of adjacent subspaces 10d increase or decrease in sequence.

[0082] During the heat storage process of the phase change material, due to the inherent characteristics of the phase change material, the melted phase change material undergoes natural convection, and the liquid phase change material moves toward the upper part of the vaporizer, causing the phase change material at the upper part of the vaporizer to melt first, while the phase change material at the lower part of the vaporizer begins to melt only after the upper phase change material is completely melted. In this process, the temperature of the phase change material at the upper part of the vaporizer is higher and the temperature at the lower part is lower, resulting in uneven temperature distribution of the vaporizer, which affects the life of the vaporizer. In order to improve this phenomenon, the phase change material of the vaporizer 100 is layered, that is, a plurality of subspaces 10d arranged along the first direction are formed in the vaporizer 100, and the phase change temperature of the phase change material gradually decreases from top to bottom along the first direction, and the temperature of the vaporizer is high at the upper part and low at the lower part. While the upper phase change material is melting, the lower phase change material is also melting rapidly, thereby reducing the uneven temperature distribution during the heat storage process.

[0083] In some embodiments, the performance of the phase change material in at least two subspaces 10d is different, which can also be understood as the phase change temperature of the phase change material in at least two subspaces 10d is different. The phase change material may include paraffin and graphite. By adjusting the graphite content in the paraffin, the performance of the phase change material can be adjusted (i.e., the phase change temperature of the phase change material can be adjusted). By setting the phase change temperature of the phase change material of each adjacent two subspaces 10d to change in a step-like form, that is, the phase change temperature of the phase change material of several adjacent subspaces 10d increases or decreases in sequence, thereby reducing the phenomenon of uneven temperature distribution of the phase change material in several subspaces 10d during the heat storage process. In some embodiments, taking the gasification space 10 as an example in which three subspaces 10d are formed, the third medium in the three subspaces 10d can be phase change material, gas, and liquid, respectively. In some embodiments of the present invention, taking the third medium as a phase change material as an example, the properties of the phase change materials in at least two subspaces 10d are different, for example, the graphite content contained in the phase change material in one subspace 10d is different from the graphite content contained in the phase change material in another subspace 10d.

[0084] In some embodiments, the first medium pipeline 2 is extended along the first direction. During the flow of the first medium along the first medium pipeline 2, the first medium exchanges heat with the second medium, and the temperature of the high-temperature first medium gradually decreases during the flow. Therefore, the performance of the third medium arranged in each subspace 10d is different, so that the third medium in each subspace 10d has a different heat absorption capacity, so that in the first direction, the temperature in each subspace 10d is close, achieving the effect of uniform distribution of the overall temperature in the vaporization space 10, thereby avoiding overcooling of the second medium flowing through the second medium pipeline 3.

[0085] In some embodiments of the present invention, an insulation layer may also be included, which is coated on the outer surface of the gasifier body 1 to prevent the heat in the gasification space 10 from being released into the environment, thereby avoiding heat loss in the gasification space 10 and reducing heat loss of the gasifier 100.

[0086] In some embodiments of the present invention, Figure 2 and Figure 5 As shown, the gasifier 100 may further include a plurality of partitions, which are spaced apart along the first direction to separate the gasification space into a plurality of subspaces 10d, and each subspace 10d may be respectively provided with a third medium.

[0087] In some embodiments, Figure 2 and Figure 5 As shown, the plurality of partitions include: a first partition 51 and a second partition 52 , and the first partition 51 and the second partition 52 are arranged at intervals along a first direction to separate the gasification space 10 into three subspaces 10 d.

[0088] like Figure 2 and Figure 5 As shown, in some embodiments, the first medium pipeline 2 is provided through the first partition 51 and the second partition 52, and in the first direction, the first partition 51 and the second partition 52 are spaced apart, the first partition 51 and the second partition 52 are suitable for being assembled in the second space 10b, and the edge of the first partition 51 and the edge of the second partition 52 are fixedly connected to the inner peripheral wall of the second shell 12, so that the first partition 51 and the second partition 52 are divided into three sub-spaces 10d in the second space 10b. By arranging the third medium with different properties in the three sub-spaces 10d, the overall temperature in the second space 10b is uniformly distributed, thereby avoiding the second medium flowing through the second medium pipeline 3 from being overcooled.

[0089] In some embodiments of the present invention, Figure 2 , Figure 4 and Figure 5As shown, the gasifier 100 may further include a second heat sink 42, which is disposed in the first medium pipeline 2 and located in the gasification space 10. The second heat sink 42 is used to increase the heat exchange area between the first medium flowing through the first medium pipeline 2 and the third medium in the gasification space 10, thereby improving the heat exchange efficiency between the first medium and the third medium.

[0090] like Figure 2 and Figure 5 As shown, in some embodiments, the gasifier 100 includes a plurality of second heat sinks 42, and the plurality of second heat sinks 42 are arranged in sequence along the first direction, and two adjacent second heat sinks 42 are spaced apart. By providing a plurality of second heat sinks 42, the heat exchange area is further increased to further improve the heat exchange efficiency of the first medium and the third medium.

[0091] like Figure 2 and Figure 5 As shown, in some embodiments, the second heat sink 42 is constructed as a circular plate structure, the first medium pipeline 2 is passed through a plurality of second heat sinks 42, and the second heat sink 42 is fixed to the outer peripheral wall of the first medium pipeline 2, and the heat of the first medium flowing through the first medium pipeline 2 is transferred to the second heat sink 42 through the first medium pipeline 2, and the heat is released together through the first medium pipeline 2 and the second heat sink 42, thereby increasing the heat exchange area.

[0092] In some embodiments of the present invention, Figure 2 and Figure 5 As shown, the second medium pipeline 3 may include a plurality of straight pipe sections 31 and a plurality of curved pipe sections 32, and both ends of each curved pipe section 32 are respectively connected to a straight pipe section 31. It can also be understood that each curved pipe section 32 is connected between two adjacent straight pipe sections 31, and adjacent straight pipe sections 31 and curved pipe sections 32 are connected in sequence, so that when the size of the second medium pipeline 3 in the first direction is constant, the flow path length of the second medium pipeline 3 is extended, thereby extending the time for the second medium to flow through the second medium pipeline 3, so that the second medium can fully exchange heat.

[0093] The vehicle-mounted hydrogen storage system according to the embodiment of the utility model includes the vaporizer 100 described in some of the above embodiments. The vaporizer 100 is applied to the vehicle-mounted hydrogen storage system. The heater with a preheating function can not only shorten the start-up time of the fuel cell so that the fuel cell can quickly reach a stable working state, but also ensure the stable operation of the fuel cell. It should be noted that the features and advantages described above for the vaporizer 100 are also applicable to the vehicle-mounted hydrogen storage system and will not be repeated here.

[0094] In the description of the present invention, it is necessary to understand that the terms "length", "inside", "outside", "circumferential", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0095] In the description of the present invention, "plurality" means two or more.

[0096] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0097] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gasifier, characterized in that: include: A gasifier body, wherein a gasification space is defined in the gasifier body; a first medium pipeline and a second medium pipeline, wherein the main part of the first medium pipeline and the main part of the second medium pipeline are located in the gasification space, and a first medium flowing through the first medium pipeline and a second medium flowing through the second medium pipeline exchange heat through a third medium located in the gasification space; A heater is used to heat the third medium so that the third medium exchanges heat with the second medium.

2. The gasifier according to claim 1, characterized in that: Along the first direction of the gasifier, a plurality of sequentially adjacent and independent subspaces are formed in the gasification space, each of the subspaces is provided with a main body of the second medium pipeline, and the subspaces are provided with the third medium.

3. The gasifier according to claim 2, characterized in that: Also includes: A plurality of partitions are arranged at intervals along the first direction to separate the gasification space into a plurality of subspaces.

4. The gasifier according to claim 2, characterized in that: The third medium is a phase change material.

5. The gasifier according to claim 4, characterized in that Along the first direction, the phase change temperatures of the phase change materials in a number of adjacent subspaces increase or decrease in sequence.

6. The gasifier according to claim 1, characterized in that: The second medium pipeline includes a plurality of straight pipe sections and a plurality of curved pipe sections, and both ends of each curved pipe section are respectively connected to the straight pipe section.

7. The gasifier according to claim 1, characterized in that: There are a plurality of the second medium pipelines, and the plurality of the second medium pipelines are arranged along the circumference of the first medium pipeline, and two adjacent second medium pipelines are spaced apart.

8. The gasifier according to claim 1, characterized in that It also includes a first heat sink, which is arranged in the gasification space and fixedly connected to the gasifier body.

9. The gasifier according to claim 8, characterized in that The first heat sink includes a main heat sink and at least one auxiliary heat sink, the auxiliary heat sink is fixed to the main heat sink, and the main heat sink is fixedly connected to the gasifier body.

10. The gasifier according to claim 1, characterized in that Also includes: A second heat sink is provided in the first medium pipeline and is located in the gasification space.

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