Water-air cooler for hydrogen fuel cells

Abstract

The utility model relates to a kind of water air coolers for hydrogen fuel cell, comprising: core body;First gas seal head assembly, including first gas seal head body, gas inlet pipeline, the gas inlet pipeline is installed on the first gas seal head body;The first gas seal head body is installed on the core body;Second gas seal head assembly, including second gas seal head body, first gas outlet connector, second gas outlet connector, the first gas outlet connector, the second gas outlet connector is installed on the second gas seal head body, the second gas seal head body is installed on the core body;First water seal head assembly, including first water seal head body, water inlet pipeline, the water inlet pipeline is installed on the first water seal head body, the first water seal head assembly is installed on the core body;Second water seal head assembly, including second water seal head body, water outlet pipeline, the water outlet pipeline is installed on the second water seal head body, the second water seal head body is installed on the core body.

Description

Technical Field

[0001] This utility model relates to the field of radiators, specifically to a hydrocooler for hydrogen fuel cells. Background Technology

[0002] The Hydrogen Fuel Cell Air-to-Water Intercooler is a liquid-cooled heat exchanger specifically designed for hydrogen fuel cell systems. Its core function is to allow coolant to enter the compressed air (cathode air) of the fuel cell stack, ensuring the stack's efficient and stable operation. Hydrogen fuel cells require air to be compressed to high pressure to increase oxygen concentration; this compression process causes a rapid increase in air temperature (up to 200°C or higher). However, the operating temperature of a proton exchange membrane fuel cell must be strictly controlled between 60-80°C (too high a temperature will damage the membrane electrode assembly, too low a temperature will reduce reaction efficiency). If high-temperature air directly enters the stack, it will cause membrane dehydration and cracking, shortening its lifespan; catalyst sintering and deactivation; and a decrease in system efficiency.

[0003] Current water-intercooler structures include a central intercooler core and two intercooler tanks located at either end of the core. The intercooler core has multiple pipes arranged along its width. Coolant enters one intercooler tank and then disperses along the width into the various pipes within the core, before flowing into the other intercooler tank and finally to a low-temperature radiator for cooling. High-temperature pressurized air passes through the intercooler core, exchanging heat with the coolant in the pipes, thus dissipating heat from the pressurized air. Therefore, this application designs a water-intercooler structure that differs from existing technologies.

[0004] However, the existing technology has the following shortcomings: (1) The existing water-air intercooler adopts a single outlet design, and the cooled gas flows out from a single outlet, resulting in high airflow resistance and limited cooling speed, which cannot meet the requirements of high flow rate conditions. (2) The airflow channel design of the existing water-air intercooler is relatively simple, and the contact area and contact time between the gas and the heat exchange fins are limited, so the heat exchange efficiency needs to be improved. (3) The assembly structure of the existing water-air intercooler is relatively complex, and the production efficiency is low. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hydrogen fuel cell air cooler.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a hydrogen fuel cell air cooler, comprising: Core; The first gas seal head assembly includes a first gas seal head body and an air inlet pipe, wherein the air inlet pipe is installed on the first gas seal head body; and the first gas seal head body is installed on the core. The second gas seal head assembly includes a second gas seal head body, a first gas outlet connector, and a second gas outlet connector. The first gas outlet connector and the second gas outlet connector are mounted on the second gas seal head body, and the second gas seal head body is mounted on the core. The first water seal head assembly includes a first water seal head body and a water inlet pipe. The water inlet pipe is installed on the first water seal head body, and the first water seal head assembly is installed on the core. The second water seal head assembly includes a second water seal head body and a water outlet pipe. The water outlet pipe is installed on the second water seal head body, and the second water seal head body is installed on the core.

[0007] Preferably, the first gas seal head body of the first gas seal head assembly has a first opening, a second opening, and a first inner cavity. The first opening communicates with the first inner cavity, and the second opening communicates with the first inner cavity. The first gas seal head body and the core are fixedly connected together by welding. The air inlet pipe is inserted into the second opening, and the air inlet pipe is fixedly connected to the first gas seal head body by welding.

[0008] Preferably, the second gas seal head assembly has a second inner cavity, and a first mounting opening and a second mounting opening are provided on the second gas seal head body, both of which communicate with the second inner cavity; the first gas outlet connector is installed on the second gas seal head body by welding or bolt / screw connection, and the first gas outlet connector covers the first mounting opening; the first gas outlet connector has a first gas flow through hole, which passes through the first gas outlet connector and communicates with the first mounting opening; the second gas outlet connector is installed on the second gas seal head body by welding or bolt / screw connection, and the second gas outlet connector covers the second mounting opening; the second gas outlet connector has a second gas flow through hole, which passes through the second gas outlet connector and communicates with the second mounting opening.

[0009] Preferably, the second gas seal head assembly further includes a flushing pipe, which is installed on the second gas seal head body by welding and communicates with the second inner cavity of the second gas seal head body.

[0010] Preferably, the first water seal head body has a first water cavity, and the water inlet pipe is installed on the first water seal head body by welding, and the water inlet pipe is connected to the first water cavity.

[0011] Preferably, the core is provided with a preset number of first mounting openings, and a preset number of first serrated fins are installed in the first mounting openings. There is a preset gap between adjacent first serrated fins, and cooling water flows through the gap between adjacent first serrated fins.

[0012] Preferably, the core is further provided with a preset number of second mounting openings, in which a preset number of second serrated fins are installed, and there is a preset gap between adjacent second serrated fins, through which high-temperature air flows.

[0013] The beneficial effects of this application are as follows: The hydrogen fuel cell water-air cooler provided by this application has the advantages of simple structure and convenient assembly. Given the two gas outlet joints connected to external gas pipes, high-temperature air flows into the two gas pipes after cooling, thereby accelerating the cooling speed of the gas. The serrated fin design increases the contact area and contact time between the cooling water or high-temperature air and the serrated fins, resulting in better and faster cooling of the high-temperature air. The two gas seal assemblies are fixedly connected to the core in a modular manner by welding, greatly improving the production speed of the water-air cooler. Furthermore, the serrated fins used near the first and second water seal assemblies are perpendicular to the water flow direction, employing a "Hardway" design. Through a reasonable fin design, the problem of high resistance in the "Hardway" design is solved, and the complex processing of cutting fins to a certain angle or shape required in traditional designs is also resolved, simplifying the manufacturing process.

[0014] The technical advantage of this application being equipped with two air outlets is: (1) Diversion and pressure reduction: The two outlet connectors divide the cooled gas, reducing the gas velocity and flow resistance at the outlet, making the gas flow smoother and helping to increase the gas flow rate.

[0015] (2) Uniform airflow: Two air outlets allow airflow to flow out from both sides of the core at the same time, improving the uniformity of airflow distribution within the core, making full use of the heat exchange area, and improving heat exchange efficiency.

[0016] (3) Adaptable to large flow rate: The two gas outlet connectors can be connected to two gas pipes to meet the large flow rate cooling air requirements of the hydrogen fuel cell system. Compared with increasing the size of a single gas outlet, the structure is more compact. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a hydrogen fuel cell air cooler provided by this utility model.

[0018] Figure 2 This is another structural schematic diagram of a hydrogen fuel cell air cooler provided by this utility model.

[0019] Figure 3 This is another structural schematic diagram of a hydrogen fuel cell air cooler provided by this utility model.

[0020] Figure 4 This is a schematic diagram of the first gas seal assembly of a hydrogen fuel cell water intercooler provided by this utility model.

[0021] Figure 5 This is a schematic diagram of the core structure of a hydrogen fuel cell water air cooler provided by this utility model.

[0022] Figure 6 Another structural schematic diagram of the core of a hydrogen fuel cell water air cooler provided by this utility model.

[0023] Figure 7 for Figure 6 A cross-sectional view of the core of a hydrogen fuel cell using an air cooler along section line AA.

[0024] Figure 8 Another structural schematic diagram of the core of a hydrogen fuel cell water air cooler provided by this utility model.

[0025] Figure 9 for Figure 8 The image shows a cross-sectional view of the core of a hydrogen fuel cell water air cooler along the BB section line. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0027] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0028] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0029] Please refer to Figure 1-9 This application provides a water-air intercooler for hydrogen fuel cells (hereinafter referred to as "water-air intercooler"), which includes: Core 1; First gas seal head assembly 2, the first gas seal head assembly 2 includes a first gas seal head body 21 and an air inlet pipe 22, the air inlet pipe 22 is installed on the first gas seal head body 21; the first gas seal head body 21 is installed on the core 1; The second gas seal head assembly 4 includes a second gas seal head body 41, a first gas outlet connector 42, and a second gas outlet connector 43. The first gas outlet connector 42 and the second gas outlet connector 43 are mounted on the second gas seal head body 41, and the second gas seal head body 41 is mounted on the core 1. The first water seal head assembly 5 includes a first water seal head body 51 and a water inlet pipe 52. The water inlet pipe 52 is installed on the first water seal head body 51, and the first water seal head assembly 5 is installed on the core 1. The second water seal head assembly 3 includes a second water seal head body 31 and a water outlet pipe 32. The water outlet pipe 32 is installed on the second water seal head body 31, and the second water seal head body 31 is installed on the core 1.

[0030] Please refer to some embodiments of this application. Figure 1-9The first gas seal head assembly 2 has a first gas seal head body 21 with a first opening 211, a second opening 212, and a first inner cavity 210. The first opening 211 communicates with the first inner cavity 210, and the second opening 212 communicates with the first inner cavity 210. The first gas seal head body 21 and the core 1 are fixedly connected together by welding. The air inlet pipe 22 is inserted into the second opening 212, and the air inlet pipe 22 is fixedly connected to the first gas seal head body 21 by welding. In this way, high-temperature air enters the first inner cavity 210 through the air inlet pipe 22, and the high-temperature air in the first inner cavity 210 enters the core 1 for cooling.

[0031] Please refer to some embodiments of this application. Figure 1-9 The second gas seal head assembly 4 has a second inner cavity 41. A first mounting opening 411 and a second mounting opening 412 are provided on the second gas seal head body 41, both communicating with the second inner cavity 410. The first gas outlet connector 42 is installed on the second gas seal head body 41 by welding or bolt / screw connection, and the first gas outlet connector 42 covers the first mounting opening 411. The first gas outlet connector 42 has a first gas flow through hole 420. A gas flow through-hole 420 passes through the first gas outlet connector 42, and the first gas flow through-hole 420 communicates with the first mounting opening 411; the second gas outlet connector 43 is installed on the second gas seal head body 41 by welding or bolt / screw connection, and the second gas outlet connector 43 covers the second mounting opening 412; the second gas outlet connector 43 has a second gas flow through-hole 430, which passes through the second gas outlet connector 43 and communicates with the second mounting opening 412. In this way, high-temperature air enters the core 1 from the first gas seal head assembly 2, and after being cooled by the core 1, flows out from the first gas outlet connector 42 and the second gas outlet connector 43. The first gas outlet connector 42 and the second gas outlet connector 43 in this application are connected to external gas pipes, and the cooled air flows into the fuel cell stack through the gas pipes.

[0032] Please refer to some embodiments of this application. Figure 1-9 The second gas seal head assembly 4 also includes a flushing pipe 44, which is welded onto the second gas seal head body 41 and communicates with the second inner cavity 410 of the second gas seal head body 41. In this way, flushing fluid is sprayed into the second inner cavity 410 through the flushing pipe 44 for flushing.

[0033] Please refer to some embodiments of this application. Figure 1-9 The first water seal head body 51 has a first water cavity 510. The water inlet pipe 52 is installed on the first water seal head body 51 by welding, and the water inlet pipe 52 is connected to the first water cavity 510. In this way, cooling water flows into the first water cavity 510 through the water inlet pipe 52, and the cooling water in the first water cavity 510 flows into the core 1 to cool the high-temperature air flowing through the core 1. The cooling water flows out from the water outlet pipe of the second water seal head assembly 3.

[0034] Please refer to some embodiments of this application. Figure 1-9 The core 1 is provided with a predetermined number of first mounting openings 11, and a predetermined number of first serrated fins 6 are installed in the first mounting openings 11. There is a predetermined gap between adjacent first serrated fins 6, and cooling water flows through the gap between adjacent first serrated fins 6. In this application, the first water seal head body 51 covers the first opening of the first mounting opening 11 of the core 1, and the second water seal head body 31 covers the second opening of the first mounting opening 11 of the core 1. Cooling water enters the first water cavity 510 of the first water seal head body 51 from the water inlet pipe, and the cooling water in the first water cavity 510 enters the first mounting opening 11 through the first opening of the first mounting opening 11, and then flows out of the core 1 through the second opening of the first mounting opening 11. Generally, in this application, the core 1 is a cube or cuboid, and the first mounting opening 11 extends through one face of the core 1. That is, the first opening of the first mounting opening 11 is located on one face of the core 1, and the second opening of the first mounting opening 11 is located on the other face of the core 1, with these two faces facing each other. In this way, cooling water flows through the first serrated fins 6, thereby cooling the high-temperature air flowing through the core 1.

[0035] Please refer to some embodiments of this application. Figure 1-9The core 1 is further provided with a predetermined number of second mounting openings 12, and a predetermined number of second serrated fins 7 are installed in the second mounting openings 12. There is a predetermined gap between adjacent second serrated fins 7, and high-temperature air flows through the gap between adjacent second serrated fins 7. In this application, the first gas seal head body 21 is covered on the third opening of the second mounting opening 12 of the core 1, and the second gas seal head body 41 is covered on the fourth opening of the second mounting opening 12 of the core 1. High-temperature air enters the first inner cavity 210 of the second gas seal head body 21 from the air inlet pipe, and the high-temperature air in the first inner cavity 210 enters the second mounting opening 12 through the third opening of the second mounting opening 12, and then flows out of the core 1 through the fourth opening of the second mounting opening 12. Generally, in this application, the core 1 is a cube or cuboid, and the second mounting opening 12 penetrates through one face of the core 1. That is, the third opening of the second mounting opening 12 is located on one face of the core 1, and the fourth opening of the second mounting opening 12 is located on the other face of the core 1, with these two faces facing each other. In this way, when high-temperature air passes through the core 1, cooling water cools the high-temperature air.

[0036] The hydrogen fuel cell water-air cooler provided in this application has the advantages of simple structure and convenient assembly. Given that it is equipped with two gas outlet joints, which are connected to gas pipes, high-temperature air flows into the two gas pipes after being cooled, thereby accelerating the cooling speed of the gas. The design of the serrated fins increases the contact area and contact time between the cooling water or high-temperature air and the serrated fins, thereby making the cooling effect of the high-temperature air better and the cooling speed faster. The two gas sealing head assemblies are fixedly connected to the core in a modular manner by welding, which greatly improves the production speed of the water-air cooler.

[0037] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A hydrogen fuel cell air cooler, characterized in that, include: Core; The first gas seal head assembly includes a first gas seal head body and an air inlet pipe, wherein the air inlet pipe is installed on the first gas seal head body; and the first gas seal head body is installed on the core. The second gas seal head assembly includes a second gas seal head body, a first gas outlet connector, and a second gas outlet connector. The first gas outlet connector and the second gas outlet connector are mounted on the second gas seal head body, and the second gas seal head body is mounted on the core. The first water seal head assembly includes a first water seal head body and a water inlet pipe. The water inlet pipe is installed on the first water seal head body, and the first water seal head assembly is installed on the core. The second water seal head assembly includes a second water seal head body and a water outlet pipe. The water outlet pipe is installed on the second water seal head body, and the second water seal head body is installed on the core.

2. The water-air cooler according to claim 1, characterized in that, The first gas seal head body of the first gas seal head assembly has a first opening, a second opening, and a first inner cavity. The first opening communicates with the first inner cavity, and the second opening communicates with the first inner cavity. The first gas seal head body and the core are fixedly connected together by welding. The air inlet pipe is inserted into the second opening, and the air inlet pipe is fixedly connected to the first gas seal head body by welding.

3. The water-air cooler according to claim 1, characterized in that, The second gas seal head assembly has a second inner cavity. A first mounting opening and a second mounting opening are provided on the second gas seal head body, both communicating with the second inner cavity. The first gas outlet connector is installed onto the second gas seal head body by welding or bolt / screw connection, and the first gas outlet connector covers the first mounting opening. The first gas outlet connector has a first gas flow through-hole, which passes through the first gas outlet connector and communicates with the first mounting opening. The second gas outlet connector is installed onto the second gas seal head body by welding or bolt / screw connection, and the second gas outlet connector covers the second mounting opening. The second gas outlet connector has a second gas flow through-hole, which passes through the second gas outlet connector and communicates with the second mounting opening.

4. The water-air cooler according to claim 3, characterized in that, The second gas seal head assembly also includes a flushing pipe, which is installed on the second gas seal head body by welding and is connected to the second inner cavity of the second gas seal head body.

5. The water-air cooler according to claim 1, characterized in that, The first water seal head body has a first water cavity, and the water inlet pipe is installed on the first water seal head body by welding, and the water inlet pipe is connected to the first water cavity.

6. The water-air cooler according to claim 1, characterized in that, The core is provided with a preset number of first mounting holes, and a preset number of first serrated fins are installed in the first mounting holes. There is a preset gap between adjacent first serrated fins, and cooling water flows through the gap between adjacent first serrated fins.

7. The water-air cooler according to claim 1, characterized in that, The core is also provided with a preset number of second mounting openings, in which a preset number of second serrated fins are installed. There is a preset gap between adjacent second serrated fins, and high-temperature air flows through the gap between adjacent second serrated fins.

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