JPH0831441A - Ventilation system for fuel cell generator - Google Patents

Abstract

PURPOSE:To provide a ventilating device having an excellent ventilation property, a high ventilation efficiency, and a high mechanical strength. CONSTITUTION:For a duct 3 of a ventilating device comprising a duct in which a ventilation fan 4 is assembled provided on an aperture part of a roof board 2 of a fuel cell power generation device 1, flow of up-directed ventilation air by the ventilation fan 4 is introduced horizontally, and then it is introduced by a ventilation guide plate 3a formed in an arc shape to go downward to be an inverse and parallel flow to it. It is then introduced by a ventilation guide plate 3b formed similarly in the arc shape to go further down inversely and parallel to it to be discharged to the external, and mechanical strength is reinforced by the ventilation guide plates 3a, 3b simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a ventilation device provided on an exterior panel of a fuel cell power generator.

[0002]

2. Description of the Related Art An electrolyte matrix is sandwiched between a fuel electrode and an air electrode, and fuel gas reformed by a fuel reformer is supplied to the fuel electrode of a fuel cell body formed by stacking these, and air is supplied to the air electrode. In a fuel cell power generator that supplies and generates a direct current by an electrochemical reaction, a fuel reformer to be used by heating to a high temperature, a high temperature exhaust gas system or a cooling water system heat exchanger, etc. are housed inside. Therefore, it is necessary to install a ventilation device on the exterior panel to perform efficient ventilation. This ventilator must have a structure that prevents rainwater from entering when the fuel cell power generator is installed outdoors. Furthermore, during maintenance work, an operator can board the equipment or temporarily place the equipment. In some cases, it is necessary to have a structure having sufficient strength.

FIG. 3 is a cross-sectional view of essential parts showing an example of a conventional structure of a ventilator of this type of fuel cell power generator. In this figure, only the ventilation device installation portion of the exterior panel is shown. A duct 3 is arranged in an opening provided in a part of a roof plate 2 of the fuel cell power generator 1, and a ventilation fan 4 supported by a support 5 is incorporated in the vicinity of the opening of the duct 3.
In this configuration, the duct 3 covers the upper surface of the opening, and the ventilation air flows in the horizontal direction, then once downward, and further in the zigzag direction in the horizontal direction, and then is discharged to the outside. Therefore, not only is it simply ventilated, but also when installed outdoors, rainwater can be effectively prevented from entering the inside of the fuel cell power generator. Further, in the present configuration, the reinforcing plate 11 is provided on the duct 3.
Since a and 11b are incorporated, the structure has high mechanical strength.

[0004]

As described above, even in the conventional ventilator, rainwater can be effectively prevented from entering,
In addition, a structure with high mechanical strength is obtained. However, in this configuration, when the flow of ventilation air flowing horizontally inside the duct 3 hits the reinforcing plate 7a and flows downward, a vortex is generated, and when the direction is hit by the reinforcing plate 7b and the direction is changed, the vortex is similarly generated. As a result, the resistance of ventilation inside the duct 3 is large, which hinders the efficient operation of the ventilation fan, and in some cases causes excessive vibration and noise.

The present invention has been made on the basis of such a background, and an object thereof is to provide a fuel cell power generator having a structure having excellent ventilation and capable of efficiently operating a ventilation fan and having high mechanical strength. It is to provide the ventilation system of.

[0006]

In order to achieve the above object, in the present invention, there is provided a ventilation device comprising a duct incorporating a ventilation fan provided in an opening of a roof plate of an exterior panel of a fuel cell power generator. The duct guides the upward ventilation air flow generated by the ventilation fan in the horizontal direction, then guides it in the lower horizontal direction opposite to the above, and further guides it in the lower horizontal direction opposite to the above. A ventilation guide plate is provided which has a flow path for ventilation air to be discharged to the outside, and is further provided at a position where the direction of the flow of ventilation air changes, and which is formed in an arc shape approximately similar to the flow line of ventilation air.

[0007]

As described above, if the ventilation guide plate formed in an arc shape approximately similar to the streamline is provided at a position where the direction of the ventilation air flow in the duct of the ventilation device changes, the ventilation air generated by the ventilation fan is provided. The flow of the air flows smoothly in a laminar flow without forming a vortex in the duct and is discharged to the outside, so an efficient flow can be obtained without applying an excessive load to the ventilation fan. it can. Further, the provided ventilation guide plate also increases the mechanical strength of the duct.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of essential parts showing a first embodiment of a ventilation device for a fuel cell power generator according to the present invention. Components having the same functions as those of the conventional example are designated by the same reference numerals, and the description thereof will be omitted. The difference between this embodiment and the conventional example is that the ventilation air that has flowed horizontally in the upper direction is guided to the lower reverse flow and further to the lower reverse horizontal flow. The ventilation guide plates 6a and 6b formed in an arc shape are arranged, and the reinforcing plate incorporated in the conventional example is omitted.

With this configuration, the ventilation guide plates 6a and 6b formed in the above-mentioned arc shape can provide a smooth flow even in a portion where the direction of the flow of ventilation air changes, and a separate mechanical strength reinforcing plate is provided. Even if it is not installed, sufficient strength will be added to the duct. FIG. 2 is a cross-sectional view of essential parts showing a second embodiment of a ventilation device for a fuel cell power generator according to the present invention. In this embodiment, ventilation guide plates 6c and 6d are further added to the upper part of the ventilation fan of the duct of the ventilation device of the first embodiment, so that the upward ventilation air flow generated by the ventilation fan smoothly moves in the horizontal direction. It was designed so that it would flow to.

[0010]

According to the present invention, there is provided a ventilator, which is provided in an opening of a roof panel of an exterior panel of a fuel cell power generator, and includes a duct in which a ventilation fan is installed. The flow of the ventilation air to be guided to the outside in the horizontal direction, and then to the lower horizontal direction opposite to the above, and further to the lower horizontal direction opposite to the above and to be discharged to the outside. , A ventilation guide plate that is formed in an arc shape that is approximately approximate to the flow line of the ventilation air is provided at the position where the direction of the ventilation air flow changes, so that the ventilation air flow is smooth and smooth. Therefore, it is possible to obtain the ventilation device of the fuel cell power generator having the rainwater intrusion prevention structure capable of operating with high ventilation efficiency. Further, with this configuration, it is possible to provide a ventilation device for a fuel cell power generator having sufficient mechanical strength without separately incorporating a dedicated mechanical strength reinforcing plate.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a first embodiment of a ventilator for a fuel cell power generator according to the present invention.

FIG. 2 is a cross-sectional view of a main part of a second embodiment of a ventilation device for a fuel cell power generator according to the present invention.

FIG. 3 is a cross-sectional view of a main part of a conventional configuration example of a ventilation device for a fuel cell power generator of this type.

[Explanation of symbols]

 1 Fuel Cell Power Generation Device 2 Roof Plate 3 Duct 4 Ventilation Fan 5 Support 6a Ventilation Guide Plate 6b Ventilation Guide Plate 6c Ventilation Guide Plate 6d Ventilation Guide Plate 7a Reinforcing Plate 7b Reinforcing Plate

Claims (1)

[Claims] 1. A ventilator comprising a duct in which a ventilation fan is incorporated, which is provided in an opening of a roof panel of an exterior panel of a fuel cell power generator, wherein the duct directs an upward flow of ventilation air generated by the ventilation fan. It has a flow path of ventilation air to be guided to the horizontal direction, then to the lower horizontal direction opposite to the above, and further to the lower horizontal direction to discharge to the outside, and A ventilation device for a fuel cell power generator, wherein a ventilation guide plate formed in an arc shape that is substantially approximate to a flow line of ventilation air is provided at a position where the flow direction changes.