Array type injection system for heat dissipation of hydrogen fuel cell and vehicle

Abstract

The utility model discloses an array type injection system for heat dissipation of a hydrogen fuel cell and a vehicle. The array type injection system comprises a water inlet pipe, an injection seat, a fixed bracket, a mounting bracket and an atomizing nozzle, one end of the water inlet pipe is connected with a hydrogen fuel cell reaction water collecting water tank, the other end of the water inlet pipe is connected with the plurality of connecting pipes through the four-way joint and the three-way joint, the plurality of spraying seats are connected onto the connecting pipes, and the atomizing nozzles are mounted on the spraying seats; the connecting pipe and the spray seat are respectively arranged on the fixed bracket, and the fixed bracket is arranged at the upper part of the radiator assembly through the mounting bracket. According to the array type injection system for heat dissipation of the hydrogen fuel cell, the collected reaction water of the hydrogen fuel cell is atomized by the atomizing nozzles and then is uniformly injected on the surface of the radiator, and the aim of improving the heat dissipation of a liquid cooling system of the hydrogen fuel cell is fulfilled by utilizing the heat dissipation principle of evaporation phase change and forced convection.

Description

Technical Field

[0001] The utility model relates to an array type injection system and a vehicle for heat dissipation of a hydrogen fuel cell, belonging to the field of hydrogen fuel commercial vehicles. Background Art

[0002] Hydrogen fuel cell commercial vehicles are one of the first market segments in China where fuel cells have been commercialized. It has gradually become an industry consensus to use hydrogen fuel heavy trucks to replace traditional fuel heavy trucks in the field of long-distance heavy loads. In view of the current technical bottleneck of heat dissipation difficulties in hydrogen fuel heavy trucks, the existing technical route is to increase the size of the radiator and the number of electronic fans, which will become a major difficulty for heavy truck commercial vehicles with limited layout space, and at the same time significantly increase the weight and cost of the vehicle, which is not conducive to the promotion and application of hydrogen fuel cell vehicles. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides an array type injection system for heat dissipation of hydrogen fuel cells, which has high heat dissipation efficiency and is of great significance for the power improvement of hydrogen fuel cells.

[0004] In addition, the utility model also provides a vehicle equipped with the array injection system for heat dissipation of hydrogen fuel cells.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts an array injection system for heat dissipation of hydrogen fuel cells, including a water inlet pipe, a spray seat, a fixed bracket, a mounting bracket and an atomizing nozzle; one end of the water inlet pipe is connected to a collection tank of hydrogen fuel cell reaction water, and the other end is connected to a plurality of connecting pipes through a four-way joint and a three-way joint, and a plurality of the spray seats are connected to the connecting pipes, and the atomizing nozzles are installed on the spray seats; the connecting pipes and the spray seats are respectively installed on the fixed brackets, and the fixed bracket is installed on the upper part of the radiator assembly through the mounting bracket.

[0006] As an improvement, one end of the mounting bracket is mounted on the radiator assembly by bolts, and the other end is connected to the fixing bracket by bolts.

[0007] As an improvement, the connecting pipe is mounted on the fixing bracket by means of a cable tie.

[0008] As an improvement, the fixing bracket comprises an L-shaped bracket body, one end of which is provided with a fixing hole, and the other end of which is provided with a plurality of clamping bosses for clamping the spray seat and a cable tie fixing groove for installing a cable tie.

[0009] As an improvement, reinforcing ribs are installed on the bracket body.

[0010] As an improvement, the atomizing nozzles are provided in three rows and are arranged alternately from top to bottom.

[0011] As an improvement, the atomizing nozzle forms an angle a with the surface of the radiator assembly, 15°≤a≤45°.

[0012] As an improvement, the connecting pipe adopts PA nylon tube.

[0013] As an improvement, the atomizing nozzle is installed on the spray seat through a quick-plug connector.

[0014] In addition, the utility model also provides a vehicle, on which the array injection system for heat dissipation of a hydrogen fuel cell is installed, and the vehicle is a hydrogen fuel heavy truck.

[0015] Compared with the prior art, the array-type injection system for heat dissipation of hydrogen fuel cells of the utility model atomizes the collected hydrogen fuel cell reaction water through an atomizing nozzle, and then evenly sprays it on the surface of the radiator, and utilizes the heat dissipation principles of evaporation phase change and forced convection to achieve the purpose of improving the heat dissipation of the hydrogen fuel cell liquid cooling system. The array-type injection system of the utility model is arranged in the upper part of the radiator, adopts a multi-nozzle, multi-row, array staggered arrangement structure, and makes the nozzle spray at a certain angle to the radiator surface, which can significantly increase the coverage area of ​​the injection system and improve the overall heat dissipation.

[0016] The utility model has the advantages of small layout space, low weight and cost, low power consumption, and good temperature uniformity. It also has high heat dissipation efficiency, which is of great significance for the power improvement of hydrogen fuel cells and effectively promotes the promotion and application of zero-emission hydrogen fuel cell heavy trucks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the spray seat and the atomizing nozzle in the utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the first installation bracket in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the first fixing bracket in the utility model;

[0022] Figure 5This is a schematic diagram of the installation structure of the spray seat on the first fixed bracket in the utility model;

[0023] In the figure: 1, water inlet pipe, 2, four-way joint, 3, cable tie, 4, spray seat, 5, second fixing bracket, 6, atomizing nozzle, 7, bolt, 8, first mounting bracket, 9, atomizing area, 10, radiator assembly, 11, connecting pipe, 12, three-way joint, 13, first fixing bracket, 13-1, first clamping boss, 13-2, first cable tie fixing groove, 13-3, first reinforcing rib, 13-4, first fixing hole, 14, second mounting bracket. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is further described in detail below. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not intended to limit the scope of the utility model. Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the utility model. The terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0025] In the description of this patent, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this patent, unless otherwise specified, "multiple" means two or more. In the description of this patent, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] like Figure 1-Figure 5 As shown, an array type spray system for heat dissipation of a hydrogen fuel cell includes a water inlet pipe 1, a spray seat 4, a fixing bracket, a mounting bracket and an atomizing nozzle 6;

[0027] One end of the water inlet pipe 1 is connected to a water tank for collecting hydrogen fuel cell reaction water, and the other end is connected to a plurality of connecting pipes 11 through a four-way joint 2 and a three-way joint 12. The connecting pipes 11 are connected to a plurality of spray seats 4, and the spray seats 4 are equipped with the atomizing nozzles 6;

[0028] The connecting pipe 11 and the spray seat 4 are respectively installed on the fixed bracket, and the fixed bracket is installed on the upper part of the radiator assembly 10 through the mounting bracket. The temperature difference in the upper half of the radiator is large, which is the high-efficiency heat exchange area of ​​the radiator. The array injection system is arranged in the high-efficiency heat exchange area in the upper half of the radiator. The phase change evaporation and forced convection heat dissipation of the injection system are more obvious under a large temperature difference, which effectively improves the heat dissipation efficiency of the system.

[0029] As an improvement of the embodiment, Figure 1 , Figure 3 As shown, one end of the mounting bracket is mounted on the radiator assembly 10 by bolts 7, and the other end is connected to the fixing bracket by bolts 7, which is convenient for assembly and disassembly. Bolt holes are provided at both ends of the mounting bracket. The specific structure of the mounting bracket may be slightly different according to the installation requirements. The mounting bracket of this embodiment includes a first mounting bracket 8 and a second mounting bracket 14, both of which can play the role of connecting the fixing bracket with the radiator assembly 10.

[0030] As an improvement of the embodiment, Figure 1 , Figure 5 As shown, the connecting pipe 11 is installed on the fixed bracket by the cable tie 3, which is easy to install; the fixed bracket includes an L-shaped bracket body, one end of which is provided with a fixing hole, and the other end is provided with a plurality of clamping bosses for clamping the spray seat 4 and a cable tie fixing groove for installing the cable tie 3. The clamping boss fixes the direction of the atomizing nozzle 6 by clamping the square spray seat 4. The fixed bracket adjusts its size according to the number and position of the atomizing nozzle 6. The fixed bracket of this embodiment includes a first fixed bracket 13 and a second fixed bracket 5 of different sizes. Taking the first fixed bracket 13 as an example, Figure 4 , Figure 5 As shown, the first fixed bracket 13 includes a first clamping boss 13-1, a first tie fixing groove 13-2, a first reinforcing rib 13-3 and a first fixing hole 13-4. The plurality of the first clamping bosses 13-1 are used to cooperate with the clamping spray seat 4, and the plurality of the first tie fixing grooves 13-2 are used to cooperate with the binding tie 3. The first clamping bosses 13-1 and the first tie fixing grooves 13-2 are used to fasten the connecting pipe 11, the spray seat 4 and the atomizing nozzle 6 to the fixed bracket, thereby improving the installation stability of the atomizing nozzle 6; at the same time, the first reinforcing rib 13-3 is used to improve the structural stability of the first fixed bracket 13.

[0031] As an improvement of the embodiment, Figure 1 , Figure 2As shown, the atomizing nozzles 6 are arranged in three rows, and according to the direction of water flow in the radiator, the windward area of ​​the radiator, and the arrangement of the heat dissipation belts and heat dissipation pipes in the radiator, the atomizing nozzles 6 are arranged in a staggered manner from top to bottom to ensure that the maximum heat dissipation area is covered. The atomizing nozzles 6 of this embodiment are arranged in three rows, with five in each row. According to the CHF conclusion, that is, under the premise that the spray characteristics remain unchanged, the maximum critical heat flux density can be obtained when the conditions of fully utilizing the droplets to participate in heat exchange and making the heat dissipation area reach the maximum are met. Here, according to factors such as the direction of water flow in the radiator and the windward area of ​​the radiator, the atomizing cone angle of the first atomizing nozzle 6 on the left side of the first row of the array injection system is cut to the leftmost edge of the radiator assembly 10 facing the wind; wherein, the atomizing nozzle 6 forms an angle a with the surface of the radiator assembly 10, as shown in FIG. Figure 2 , Figure 3 The direction shown is obtained by the combination of the fixing bracket and the mounting bracket, generally 15°≤a≤45°;

[0032] The first atomizing nozzle 6 on the left side of the second row and the first atomizing nozzle 6 on the left side of the third row are arranged at equal intervals between the first atomizing nozzle and the second atomizing nozzle on the left side of the first row, and the remaining nozzles are arranged in a staggered manner according to the above rule, so as to ensure that each atomizing nozzle 6 of the array spray system reaches the maximum atomizing area 9 ( Figure 1 The dotted line part in the figure) can cover the maximum heat dissipation area.

[0033] As an improvement of the embodiment, the connecting pipe 11 is made of PA nylon pipe, and the connection between the connecting pipe 11 and each spray seat 4 is made of a clamping ring structure, which can not only play a fastening role, but also prevent water leakage.

[0034] As an improvement of the embodiment, the atomizing nozzle 6 is installed on the spray seat 4 by quick plugging, such as using a quick plug connector, which is convenient for maintenance and replacement.

[0035] Finally, the utility model also provides a vehicle, on which the array injection system for heat dissipation of a hydrogen fuel cell is installed, and the vehicle is a hydrogen fuel heavy truck.

[0036] When in use, the hydrogen fuel cell reaction water is pressurized by the booster water pump, enters the injection system from the upper side of the radiator assembly 10 along the water inlet pipe 1 of the array injection system, and is connected to the four-way joint 2. The four-way joint 2 and the three-way joint 12 are located between the second and third atomizing nozzles 6 in each row. The fuel cell reaction water is respectively connected to the atomizing nozzles 6 on the left and right sides and the lower row of pipelines through the three outlets of the four-way joint 2, and each atomizing nozzle 6 is used to spray toward the upper half of the radiator to dissipate heat and cool down.

[0037] The array injection system of the utility model for heat dissipation of hydrogen fuel cells atomizes the collected hydrogen fuel cell reaction water through an atomizing nozzle, and then evenly sprays it on the surface of the radiator, and uses the heat dissipation principles of evaporation phase change and forced convection to achieve the purpose of improving the heat dissipation of the hydrogen fuel cell liquid cooling system. The array injection system of the utility model is arranged in the upper part of the radiator, adopts a multi-nozzle, multi-row, array staggered arrangement structure, and makes the nozzle spray at a certain angle to the radiator surface, which can significantly increase the coverage area of ​​the injection system and improve the overall heat dissipation.

[0038] The utility model has the advantages of small layout space, low weight and cost, low power consumption, and good temperature uniformity. It also has high heat dissipation efficiency, which is of great significance for the power improvement of hydrogen fuel cells and effectively promotes the promotion and application of zero-emission hydrogen fuel cell heavy trucks.

[0039] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several modifications, improvements or equivalent substitutions can be made, which should all be included in the scope of the claims of the utility model. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation method and other records can be used to interpret the content of the claims.

Claims

1. An array injection system for heat dissipation of a hydrogen fuel cell, characterized in that: It comprises a water inlet pipe (1), a spray seat (4), a fixing bracket, a mounting bracket and an atomizing nozzle (6); One end of the water inlet pipe (1) is connected to a water tank for collecting hydrogen fuel cell reaction water, and the other end is connected to a plurality of connecting pipes (11) through a four-way joint (2) and a three-way joint (12); a plurality of spray seats (4) are connected to the connecting pipes (11), and the spray seats (4) are mounted with the atomizing nozzles (6); the connecting pipes (11) and the spray seats (4) are respectively mounted on fixed brackets, and the fixed brackets are mounted on the upper part of the radiator assembly (10) through mounting brackets.

2. The array injection system for heat dissipation of a hydrogen fuel cell according to claim 1, characterized in that: One end of the mounting bracket is mounted on the radiator assembly (10) via a bolt (7), and the other end is connected to the fixing bracket via a bolt (7).

3. The array injection system for heat dissipation of a hydrogen fuel cell according to claim 1, characterized in that: The connecting pipe (11) is mounted on the fixing bracket via a cable tie (3).

4. The array injection system for heat dissipation of a hydrogen fuel cell according to claim 3, characterized in that: The fixing bracket comprises an L-shaped bracket body, one end of which is provided with a fixing hole, and the other end of which is provided with a plurality of clamping bosses for clamping the spray seat (4) and a tie fixing groove for installing the tie (3).

5. The array injection system for heat dissipation of a hydrogen fuel cell according to claim 4, characterized in that: The bracket body is provided with reinforcing ribs.

6. The array injection system for heat dissipation of a hydrogen fuel cell according to claim 1, characterized in that: The atomizing nozzles (6) are provided in three rows and are arranged in a staggered manner from top to bottom.

7. An array injection system for heat dissipation of a hydrogen fuel cell according to claim 1 or 6, characterized in that: The atomizing nozzle (6) and the surface of the radiator assembly (10) form an angle a, 15°≤a≤45°.

8. The array injection system for heat dissipation of a hydrogen fuel cell according to claim 1, characterized in that: The connecting pipe (11) is made of PA nylon pipe.

9. The array injection system for heat dissipation of a hydrogen fuel cell according to claim 1, characterized in that: The atomizing nozzle (6) is installed on the spray seat (4) via a quick-connect connector.

10. A vehicle, characterized in that: The vehicle is equipped with an array injection system for heat dissipation of a hydrogen fuel cell as described in any one of claims 1 to 9, and the vehicle is a hydrogen fuel heavy truck.

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