WO2020042552A1

WO2020042552A1 - Novel ventilation assembly and fuel cell using same

Info

Publication number: WO2020042552A1
Application number: PCT/CN2019/076283
Authority: WO
Inventors: 邓佳; 朱太荣; 陈星富; 李海君
Original assignee: 中山大洋电机股份有限公司; 大洋电机新动力科技有限公司
Priority date: 2018-08-31
Filing date: 2019-02-27
Publication date: 2020-03-05

Abstract

Disclosed in the present invention are a novel ventilation assembly and a fuel cell using same. The novel ventilation assembly comprises an air pipe (1) and at least one fan unit (2); the fan unit (2) comprises a fan housing (21), an axial blower (22), and an air direction adjustment plate (23); an air inlet (11) is formed at one end of the air pipe (1), and the fan housing (21) is connected to the other end of the air pipe (1); a cavity (210) is provided within the fan housing (21), the axial blower (22) being mounted in the cavity (210) of the fan housing (21); and an air entering port (211) is provided at an end of the fan housing (21), the air direction adjustment plate (23) being mounted at an end face (212) of the air entering port (211). Said ventilation assembly has a high protection level and a small volume, is easy to mount, has a large ventilation angle, achieves uniform air blowing, saves power, and has low noise.

Description

Novel ventilation component and applied fuel cell

Technical field:

The invention relates to a fuel cell with a novel ventilation structure.

Background technique:

Existing hydrogen energy fuel cells generally include a tank, a stack module (that is, a fuel cell stack--that is, a plurality of independent single fuel cells connected in series), a stack inlet valve group, a stack outlet valve group, and hydrogen Circulation pump, hydrogen supply system, and air circuit system. The reactor module, the reactor inlet valve group, the reactor outlet valve group, and the hydrogen circulation pump are all installed in the box. Because the reactor module uses hydrogen and oxygen, The chemical reaction occurs to generate electricity. During the work process, the reactor will leak a certain amount of hydrogen. If there is a high concentration of hydrogen in the area of the cabinet, there is a high risk of explosion. Therefore, an exhaust pipe is generally installed on the cabinet. Air fan or intake fan. The intake fan is used to continuously pass filtered fresh air into the box. The entry of fresh air will purge hydrogen and reduce the hydrogen concentration; the exhaust fan continuously draws the mixed gas in the box. To ensure that the hydrogen concentration in the cabinet is at a safe low concentration value.

The traditional structure is to install an intake fan on one side of the box, or install an exhaust fan on the opposite side, cut out an air inlet hole on one side of the box where the air inlet fan is installed, and install a filter on the air inlet hole. A relatively large intake fan is installed on the side of the box. This structure has the following disadvantages: 1) the air intake fan is large in volume as a ventilation component and has troublesome installation; 2) the air intake fan has a small sweep angle on the inside of the box, uneven sweeping, and residual dead angles, leading to hidden safety risks . 3) Large energy consumption; 4) Large noise caused by fans; 5) Low IP protection level;

Summary of the invention:

The object of the present invention is to provide a novel ventilation assembly and a fuel cell applied to it, in order to solve the above-mentioned background technology, the intake fan occupies a large volume of the box, has a troublesome installation, a small sweep angle, an uneven sweep, a large energy consumption, Technical problems with high noise and low protection level.

The object of the present invention is achieved by the following technical solutions:

A novel ventilation component includes an air duct and at least one fan unit. The fan unit includes a fan cover, an axial flow fan, and a wind direction adjusting plate. One end of the air tube forms an air inlet, and the other end of the air tube is connected to the fan cover and the fan cover. A cavity is set in the middle, the axial flow fan is installed in the cavity of the fan cover, an air inlet is provided at the end of the fan cover, and an air direction adjustment plate is installed at the end position of the air inlet.

The one end of the fan cover is provided with an air pipe joint, the air pipe joint is connected with the air pipe in a nest, and the air pipe joint is communicated with the cavity.

The above-mentioned wind direction adjusting plate includes a bottom plate, a plurality of ventilation holes are arranged on the bottom plate, and a plurality of inclined wind deflectors are protruded on the bottom plate.

The above-mentioned bottom plate is mounted on the end face of the air inlet by screws.

The above-mentioned air pipe is a three-way pipe, one end of which forms an air inlet, and one fan unit is installed at each of the two outlets of the air pipe.

The two wind deflectors of the two fan units described above have a mounting angle.

The above-mentioned staggered installation angle of the two wind deflectors is preferably 90 °.

The fan cover described above is a rotating body.

A plurality of screws mounted on the end face of the fan housing are also mounted on the fuel cell case.

A fuel cell includes a box body, an electric stack module installed in the box body, an electric stack air inlet valve group, an electric stack air outlet valve group, an output DC bus copper bar, and a ventilation component. Openings are dug on the opposite sides, a ventilation component is installed at the opening on one side, and an air outlet is formed at the opening on the other side, which is characterized in that the ventilation component is the new type ventilation component described above.

An exhaust fan is also installed at the exhaust port as described above.

Compared with the prior art, the present invention has the following effects:

1) The novel ventilation assembly of the present invention includes an air duct and at least one fan unit. The fan unit includes a fan cover, an axial flow fan, and a wind direction adjusting plate. One end of the air tube forms an air inlet, and the other end of the air tube is connected to the fan cover. A cavity is provided in the middle of the fan cover, an axial flow fan is installed in the cavity of the fan cover, an air inlet is provided at the end of the fan cover, and an airflow direction adjustment plate is installed at the end position of the air inlet. . It has high protection level, small volume, convenient installation, large ventilation angle, uniform sweeping, more energy saving and low noise.

2) One end of the fan cover is provided with an air pipe joint, and the air pipe joint is connected with the air pipe in a nest. The air inlet is inside the air pipe joint, which is convenient for production and installation.

3) The wind direction adjusting plate includes a bottom plate. The bottom plate is provided with a plurality of ventilation holes, and a number of inclined air guide plates are protruded on the bottom plate. The bottom plate is installed on the end face of the air outlet by screws. The structure is simple and easy to install.

4) The air duct is a tee, and one end of the air duct forms an air inlet. Two fan units are connected and installed at the two outlets of the air duct. The two air deflectors of the two fan units are staggered by one installation angle. Increase the purging area range, applicable to the situation where the purging range is large;

5) The end face of the fan cover is also provided with several screws for installation with the fuel cell box, which is convenient to install.

6) A fuel cell according to the present invention includes a box body and an electric stack installed inside the box body, an integrated manifold intake manifold manifold, an electric stack outlet valve group, an output DC bus copper bar, an intake fan assembly, and An exhaust fan assembly, in which an intake fan assembly and an exhaust fan assembly are respectively installed on two opposite sides of the box. The aforementioned intake fan assembly adopts the above-mentioned new ventilation assembly, which achieves uniform purging, no dead corners, and small volume. Easy to install.

Brief description of the drawings:

FIG. 1 is a structural perspective view of Embodiment 1 of the present invention;

2 is an exploded view of Embodiment 1 of the present invention;

3 is a front view of a first embodiment of the present invention;

Figure 4 is a sectional view taken along A-A of Figure 3;

5 is a front view of a second embodiment of the present invention;

FIG. 6 is a perspective view of a second embodiment of the present invention.

detailed description:

The present invention will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

Embodiment one:

As shown in FIG. 1 to FIG. 4, the present invention provides a novel ventilation assembly, including an air duct 1 and at least one fan unit 2. The fan unit 2 includes a fan cover 21, an axial fan 22, and a wind direction adjustment plate 23. An air inlet 11 is formed at one end of the air duct 1, and a fan cover 21 is connected to the other end of the air duct 1. A cavity 210 is provided in the middle of the fan cover 21, an axial fan 22 is installed in the cavity 210 of the fan cover 21, and an end of the fan cover 21 is provided. The air inlet 211 is provided with an airflow direction adjusting plate 23 at a position of an end surface 212 of the air inlet 211.

An end of the fan housing 21 is provided with an air pipe joint 213. The air pipe joint 213 is nested with the air pipe 1, and the air pipe joint 213 communicates with the cavity 210.

The wind direction adjusting plate 23 includes a bottom plate 231, a plurality of ventilation holes 232 are provided on the bottom plate 231, and a plurality of inclined air guide plates 233 are protruded on the bottom plate 231.

The bottom plate 231 is mounted on the end surface 212 of the air inlet 211 by screws.

The air pipe 1 is a three-way pipe, and one end of the air pipe 1 forms an air inlet 11. A fan unit 2 is installed at each of two outlets of the air pipe 1.

The two air deflectors 233 of the two fan units are staggered by a mounting angle. The staggered installation angle of the two wind deflectors 233 is preferably 90 °.

The fan cover 21 is a rotating body.

The end face 212 of the fan cover 21 is further provided with a plurality of screws 214 that are mounted on the fuel cell case.

In the above embodiment, the air pipe 1 is a three-way pipe, and the outlet of the three-way pipe is connected to two fan units 2. As a person of ordinary skill in the art, of course, the air pipe 1 may also be a two-way pipe (that is, One inlet and one outlet). One fan unit 2 is installed at the end of the two-way air pipe 1 and will not be described here.

The working principle of the present invention is: when the axial flow fan 22 is in operation, fresh air is drawn in from the air inlet 11 at one end of the air duct 1, and then blows out from the air inlet 211 at the end of the fan cover 21, and is located at the end surface 212 of the air inlet 211 An air direction adjusting plate 23 is installed. The air direction adjusting plate 23 includes a bottom plate 231. The bottom plate 231 is provided with a plurality of ventilation holes 232. A plurality of inclined air guide plates 233 are protruded from the bottom plate 231. Output is guided by the wind deflector 233. The axial fan 22 has a small fan cover 21, which is small in size, easy to install, has a high level of protection, and is easy to install. The addition of a wind deflector 233 enables a large ventilation angle and uniform sweeping, and the axial fan 22 has low power, which saves power. , Low noise.

Embodiment two:

As shown in FIG. 5 and FIG. 6, a fuel cell provided by the present invention includes a tank 100 and a stack module 101 installed in the tank 100, a stack inlet valve group 102, and a stack outlet valve group. 103. The output DC bus copper bar and ventilation assembly 300, in which openings are dug on the two opposite sides of the box, and the ventilation assembly 300 is installed at the opening on one of the sides (the opening is blocked so it is not shown in the figure). An air outlet is formed at the opening 104 on the other side, and the ventilation assembly 300 adopts the new ventilation assembly described in the first embodiment.

The exhaust fan assembly 200 is also installed at the exhaust port.

When the fuel cell is in operation, the ventilation assembly 300 draws in fresh air from the air inlet 11 at one end of the air duct 1 and blows it out from the air inlet 211 at the end of the fan cover 21 to purge the components inside the box 100. And reduce the concentration of hydrogen, the exhaust fan assembly 200 is also installed at the exhaust port, which can accelerate the flow of fresh air.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent. The replacement methods are all included in the protection scope of the present invention.

Claims

A novel ventilation component is characterized in that it includes an air duct (1) and at least one fan unit (2). The fan unit (2) includes a fan cover (21), an axial fan (22), and a wind direction. An adjusting plate (23), one end of the air duct (1) forms an air inlet (11), the other end of the air duct (1) is connected to a fan cover (21), a cavity (210) is provided in the middle of the fan cover (21), and an axial flow fan ( 22) Installed in the cavity (210) of the fan cover (21), an air inlet (211) is provided at the end of the fan cover (21), and an air direction adjustment plate (23) is installed at the end face (212) of the air inlet (211) .
The novel ventilation assembly according to claim 1, characterized in that: one end of the fan cover (21) is provided with an air pipe joint (213), and the air pipe joint (213) is nested with the air pipe (1). The air pipe joint (213) is in communication with the cavity (210).
The new type ventilation module according to claim 1 or 2, characterized in that the wind direction adjusting plate (23) comprises a bottom plate (231), and a plurality of ventilation holes (232) are provided on the bottom plate (231), A number of inclined wind deflectors (233) protrude from (231).
The novel ventilation assembly according to claim 3, wherein the bottom plate (231) is mounted on the end surface (212) of the air inlet (211) by screws.
The novel ventilation assembly according to claim 1, characterized in that the air duct (1) is a three-way pipe, one end of which forms an air inlet (11), and the two outlets of the air duct (1) One fan unit (2) is installed each.
The novel ventilation assembly according to claim 5, characterized in that the two air guide plates (233) of the two fan units are staggered by a mounting angle.
The novel ventilation assembly according to claim 6, characterized in that the staggered installation angles of the two wind deflectors (233) are preferably 90 °.
A new type of ventilation assembly according to claim 5, characterized in that the fan cover (21) is a rotating body.
The novel ventilation assembly according to claim 5, characterized in that the end face (212) of the fan cover (21) is further provided with a plurality of screws (214) installed with the fuel cell case.
A fuel cell includes a box body (100) and a stack module (101) installed in the box body (100), a stack inlet valve group (102), a stack outlet valve group (103), and an output. The DC bus copper bars and ventilation components, in which openings are dug on the two opposite sides of the box, a ventilation component is installed at the opening on one side, and an air outlet is formed at the opening on the other side, which is characterized by: The ventilation component adopts the novel ventilation component according to any one of claims 1 to 9 above.
The fuel cell according to claim 10, wherein an exhaust fan assembly (200) is further installed at the exhaust port.