JP2009129621A - Fuel cell power generating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell power generating device which has an FC unit and a hot-water storage unit, wherein carrying-in is easy and installment space per unit is small. <P>SOLUTION: The FC unit having a fuel generator 22, an oxidizer gas supplying part 21, a cell stack 23, and a cooling water tank 24 to store cooling water to recover heat of the cell stack 23, and the hot-water storage unit having the hot-water storage tank 31 to store the heat recovered by the FC unit are transferred separately as the separate frames 11, 12, and integrally assembled at the installment place. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fuel cell power generator used in a stationary cogeneration system installed on a site such as a general household or a business establishment.

  Conventionally, a fuel cell power generator capable of high-efficiency small-scale power generation is easy to build a system for using the thermal energy generated during power generation. Development is underway as a power generation system.

  In a fuel cell power generator, during a power generation operation, a fuel gas and an oxidant gas are respectively supplied to a fuel cell main body (hereinafter referred to as a cell stack) disposed as a main body of the power generation unit. Then, in the cell stack, hydrogen in the supplied fuel gas and oxygen in the oxidant gas are used, and a predetermined electrochemical reaction proceeds. As the electrochemical reaction proceeds, the chemical energy of hydrogen and oxygen is converted into electrical energy and thermal energy. Electric energy is converted from direct current generated into alternating current and used as electric power at home. Thermal energy is stored in the form of hot water in a hot water storage tank for effective use, and is used as heat for hot water used at home.

  For this reason, as shown in FIG. 18, there is a fuel cell power generation apparatus in which a unit 101 for generating electricity such as a cell stack and a hot water storage unit 102 for holding heat as hot water are arranged as separate units (see, for example, Patent Document 1).

Moreover, what makes the fuel cell power generation system and hot water storage system containing a cell stack into a fuel cell cogeneration system provided with the common baseplate is proposed (for example, refer patent document 2).
JP 2004-111208 A JP-A-2005-32461

  However, if the two units 101 and 102 are separately disposed, a very large area is occupied, and thus there is a problem that a place where the unit can be installed is extremely limited. In addition, since the distance between the two units 101 and 102 differs depending on the state of the installation place, the installation work such as adjusting the length of the piping at the site was very enormous.

  Further, in order to improve the installation property, a component that is fixed on a common base plate and integrated so as to eliminate connection work at the site has a problem that the weight is extremely increased. As shown in FIG. 18, since it has been divided into a plurality of units so far, even if the total weight is heavy, the weight per unit is small so that it can be easily carried in, but it is fixed on a common base plate. However, if a single unit is used, the weight per unit during loading increases, which makes it difficult to carry in.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a fuel cell power generator that is easy to carry in and has a small installation occupation area.

  In order to solve the above-described conventional problems, a fuel cell power generator according to the present invention includes a fuel generator that generates fuel gas from raw material gas, an oxidant gas supply unit that supplies oxidant gas, and a fuel gas and oxidant gas. An FC unit having a cell stack for generating electric power from the above, a cooling water tank for storing cooling water for recovering the heat of the cell stack, and a hot water storage unit having a hot water storage tank for storing the heat recovered by the FC unit; The FC unit and the hot water storage unit are detachable, and an exterior plate is provided to cover the FC unit and the hot water storage unit.

  The fuel cell power generator according to the present invention can be installed in a small space because it can be installed separately and can be installed easily because the FC unit and the hot water storage unit are detachable. become.

  A first invention includes a fuel generator that generates fuel gas from a raw material gas, an oxidant gas supply unit that supplies oxidant gas, a cell stack that generates electric power from the fuel gas and oxidant gas, and a cell stack The FC unit has a cooling water tank that stores cooling water that collects the heat of the tank, and a hot water storage unit that has a hot water storage tank that stores the heat recovered by the FC unit. The FC unit is held by the first frame. The hot water storage unit is held by the second frame, the FC unit and the hot water storage unit are detachable, and an exterior plate covering the FC unit and the hot water storage unit is provided, so that the FC unit and the hot water storage unit are transported separately during loading. Can be carried in easily without using a large-scale machine, and both units after installation are covered with an exterior plate. More both units come together, it is possible to eliminate the wasted space, such as gaps between the two units, the fuel cell power generation system can be realized which can be installed even in narrow spaces.

  A second invention includes a fuel generator that generates fuel gas from a raw material gas, an oxidant gas supply unit that supplies oxidant gas, a cell stack that generates electric power from the fuel gas and oxidant gas, and a cell stack The FC unit has a cooling water tank that stores cooling water that collects the heat of the tank, and a hot water storage unit that has a hot water storage tank that stores the heat recovered by the FC unit. The FC unit is held by the first frame. The hot water storage unit is held by the second frame, the first frame and the second frame are detachable, and an exterior plate covering the first frame and the second frame is provided, so that Since the first frame and the second frame can be transported separately, they can be easily carried in without using a large-scale machine. FC unit and hot water storage unit both frames are held by covering with come together, it is possible to eliminate the wasted space, such as gaps between the two units, the fuel cell power generation system can be realized which can be installed even in narrow spaces.

  The third invention is particularly stable by providing a cell stack at a position higher than the fuel generator of the FC unit of the first or second invention and arranging a cooling water tank at a position higher than the cell stack. In addition to realizing the operation, a fuel cell power generator that can reduce the installation area of the FC unit and can be installed in a smaller place can be realized.

  In the fourth aspect of the invention, in particular, by providing an FC hot water storage connecting portion for connecting the first frame and the second frame of any one of the first to third aspects, the two frames can be integrated by integrating the two frames at the time of installation. By integrating the two units, they can support each other, and even if the unit is easy to fall down, it can be installed, and each unit can be made to have a longer configuration, making it even smaller. A fuel cell power generator that can be installed in a place can be realized.

  In the fifth aspect of the invention, in particular, the connection work of the connection pipe for connecting the FC unit of any one of the first to fourth aspects of the invention and the hot water storage unit can be performed from one or two directions of the exterior. By configuring the FC unit and the hot water storage unit, there is no need to adjust the length of connecting pipes at the site and shape processing, making it easy to install.

  In the sixth invention, in particular, the first frame and the second frame of any one of the first to fifth inventions have the same height, and the ceiling exterior covers the ceiling of the first frame and the second frame. By using a common plate, the ceiling exterior plates of both units can be attached by fixing the ceiling exterior plate once, so that installation and construction can be performed more easily.

  In the seventh aspect of the invention, in particular, the first outer frame and the second frame of any one of the first to sixth aspects have the same depth, and the rear exterior plate that covers the rear surfaces of the first frame and the second frame Since at least one of the front exterior plates covering the front is shared, it can be attached to both units by fixing at least one of the rear exterior plate and the outside of the front, so that installation and construction can be performed more easily. .

  In the eighth invention, in particular, the hot water storage unit and the auxiliary heat source machine are obtained by holding the auxiliary heat source machine for heating the hot water held in the hot water storage unit of any one of the first to seventh inventions by the second frame. Since it can be easily divided and integrated, it can be easily constructed, and more stable during installation, and a more compact fuel cell power generator can be realized.

  According to a ninth aspect of the present invention, there is provided a third frame for holding an auxiliary heat source unit having an auxiliary heat source unit for heating hot water held in the hot water storage unit of any one of the first to eighth aspects. The unit is detachable from at least one of the FC unit and the hot water storage unit, so that even if it has an auxiliary heat source unit, it can be easily carried in separately, and at least one of the FC unit and the hot water storage unit is connected to the auxiliary heat source unit. Therefore, it can be stably installed in a narrow place.

  According to a tenth aspect of the present invention, there is provided a third frame for holding an auxiliary heat source unit having an auxiliary heat source unit for heating hot water held in the hot water storage unit of any one of the first to eighth aspects, This frame can be detachably attached to at least one of the first frame and the second frame, so that even if it has an auxiliary heat source device, it can be easily carried in separately, and the first frame and the second frame By connecting at least one and the third frame, it can be stably installed in a narrow place.

  In the eleventh aspect of the invention, in particular, the auxiliary heat source unit is provided by providing an auxiliary heat source connecting portion for connecting at least one of the first frame and the second frame of the ninth or tenth invention and the third frame. Even if it has, it can be divided and carried in easily, etc., and it becomes more stable by connecting at least one of the first frame and the second frame and the third frame by the auxiliary heat source connection portion, so that it can be used in a narrow place. Can also be installed.

  In the twelfth invention, in particular, the third frame and the second frame or the first frame of any one of the ninth to eleventh inventions have the same height, and the third frame and the second frame or By making the ceiling exterior plate covering the ceiling of the first frame common, a fuel cell power generator that can be installed more easily can be realized.

  In the thirteenth invention, in particular, the third frame and the second frame or the first frame of any one of the ninth to twelfth inventions have the same depth, and the third frame and the second frame or the first frame are the same. By making at least one of the rear exterior plate covering the back of one frame and the front exterior plate covering the front, a fuel cell power generator that can be installed more easily can be realized.

  In the fourteenth aspect of the invention, in particular, in the fuel cell power generator according to any one of the first to thirteenth aspects, by fixing at least the first frame and the second frame to the fourth frame connected to the foundation. Thus, a fuel cell power generator that can be installed and installed more easily can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a perspective view showing the external appearance of the fuel cell power generator according to Embodiment 1 of the present invention, FIG. 2 is a front view showing the external appearance of the fuel cell power generator according to the embodiment, and FIG. FIG. 4 is a right side view showing the right side of the fuel cell power generator of the embodiment.

  The fuel cell power generator 1 has a front exterior plate 2 on the front, a left exterior plate 3 and a right exterior plate 4 on the side, a rear exterior plate 5 on the back, a ceiling exterior plate 6 on the ceiling, and a bottom surface. Is provided with a bottom exterior plate 7.

  The fuel cell power generator 1 is connected by a leg 8 to a foundation provided on the ground. The left side exterior plate 3 is provided with an upper vent 9 and a lower vent 10. As shown in each figure, the fuel cell power generator 1 is composed of one unit and has a very small installation area.

  Next, the internal configuration of the fuel cell power generator according to Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 5 is a perspective view showing the configuration of the main components inside the exterior plate of the fuel cell power generator 1 according to the embodiment, and FIG. 6 shows the configuration of the main components inside the package after the exterior plate is removed. FIG. 7 is a top view showing the configuration of the main components inside with the exterior plate removed.

  The inside is composed of a detachable first frame 11 and a second frame 12. The first frame 11 and the second frame 12 are connected and integrated by an FC hot water frame connecting portion 13 which is an FC hot water connecting portion. The front exterior plate 2, the left side exterior plate 3, the right side exterior plate 4, the rear exterior plate 5, the ceiling exterior plate 6 and the bottom exterior plate 7 form the exterior of the first frame 11 and the second frame 12 as the first. By covering the frame 11 and the second frame 12 except for the connection surface, the fuel cell power generation device 1 is formed as one unit with the minimum necessary members.

  Two legs 8 are provided on each of the first frame 11 and the second frame 12, and the whole is supported by four legs.

  The FC unit includes an oxidant gas supply unit 21 for supplying air and the like, a fuel generator 22 for generating a fuel gas containing hydrogen from a source gas such as city gas, and a cell stack 23 for generating electric power from oxygen and hydrogen. , A cooling water tank 24 for storing cooling water for recovering at least heat generated in the cell stack 23, a purification unit 26 for removing impurities in the air, water and raw material gas, and control of the fuel cell power generator and generated in the cell stack 23 It comprises a circuit unit 27 that converts direct current to alternating current and an auxiliary unit 28. The auxiliary machine part 28 is a pump or a valve for operating the FC unit.

  The heat exchange unit 30 collects heat generated by the FC unit. In this embodiment, each component of the FC unit and the heat exchanging unit 30 are held by the first frame 11. The heat generated in the FC unit is finally stored as hot water in the hot water storage tank 31, and the hot water in the hot water storage tank 31 is adjusted to an appropriate temperature by the mixing valve 32 and then used.

  The hot water storage unit is composed of a hot water storage tank 31 and a mixing valve 32, and is held by the second frame 12 in this embodiment. The second frame 12 is provided with an auxiliary heat source device 33. When the water temperature in the hot water storage tank 31 is low, the auxiliary heat source device 33 heats the hot water to use hot water for hot water supply. The first frame 11 is provided with an FC side connection portion 35, and the second frame 12 is provided with a hot water storage side connection portion 36, which are connected by an FC hot water storage connection member 37.

  In FIG. 1, a front exterior plate 2, a ceiling exterior plate 6, and a bottom exterior plate 7 are configured to cover two frames with a single exterior plate as a common exterior plate for the first frame 11 and the second frame 12. However, the first frame 11 and the second frame 12 may be covered with separate exterior plates.

  When an exterior plate is provided for each frame, each exterior plate becomes smaller and lighter, making it easier to handle, but the number of exterior plates increases, and a seal structure is required to prevent rainwater from entering around each exterior plate. Compared to the case of using a common exterior plate, there is a possibility that it takes time to assemble the larger number of parts, and it takes time to check the sealing function due to the large number of seal parts.

  On the other hand, in the case of an exterior plate common to a plurality of frames, the total number of exterior plates is reduced and the number of seal portions is also reduced, so that the assembly workability can be improved. However, since the respective exterior plates may become larger or heavier, it is preferable to use a common exterior plate in consideration of this point.

  Next, an outline of the operation of the fuel cell power generator 1 will be described. The fuel cell power generator 1 introduces a hydrocarbon-based source gas such as methane or propane from the outside. In this embodiment, 13A gas which is city gas is used. The introduced raw material gas causes a reaction represented by (Chemical Formula 1) as a catalytic reaction in the fuel generator 22, but since this chemical reaction is an endothermic reaction, it is necessary to apply heat during the reaction.

  When the reaction shown in (Chemical Formula 1) occurs, hydrogen and carbon dioxide are generated. At the same time, the carbon monoxide generated by the reaction shown in (Chemical Formula 2) is shifted as shown in (Chemical Formula 3). The concentration is reduced by the reaction, and it is removed by a carbon monoxide selective oxidation reaction as shown in (Chemical Formula 4) until the amount becomes, for example, 20 ppm or less.

  In this way, the fuel gas containing a small amount of carbon monoxide in addition to hydrogen, carbon dioxide and water vapor generated from the raw material gas is sent to the cell stack 23. Further, air is sent from the oxidant gas supply unit 21 such as an air blower or a compressor to the air purification part of the purification unit 26 and further to the cell stack 23.

  In the present embodiment, air is sent from the oxidant gas supply unit 21 to the purification unit 26, but the air that has passed through the purification unit 26 may be guided from the oxidant gas supply unit 21 to the cell stack 23. In the cell stack 23, water is generated by the reaction shown in (Chemical Formula 5) by the air and hydrogen that are sent, and at the same time, heat and electricity are generated.

  Electricity is converted from direct current to alternating current in the circuit unit 27, and then used as electric power outside the fuel cell power generator. Heat is carried from the cell stack 23 when the cooling water held in the cooling water tank 24 flows through the cell stack 23, and the water returns to the cooling water tank 24 and circulates again.

  The temperature of the cooling water is kept substantially constant by exchanging heat with water connected to the hot water storage tank 31 by the heat exchanging unit 30 disposed in the circulating path. The fuel gas that has not been consumed in the cell stack 23 flows into the burner portion of the fuel generator 22 and burns as off-gas. The heat generated by the combustion is effectively used as the heat required for the endothermic reaction of (Chemical Formula 1).

  In the present embodiment, of the heat generated in the FC unit, in addition to the heat generated in the cell stack 23, the exhaust gas generated by the burner of the fuel generator 22 and the air exhausted and not used in the cell stack 23 are also heated. It collect | recovered by the exchange part 30 and used for the temperature rise of a cooling water.

  In the present embodiment, auxiliary equipment such as a pump and a heat exchanger for operating the FC unit are housed in the auxiliary equipment section 28. However, each auxiliary equipment related to the fuel generator 22 and the cell stack 23 constituting the FC unit. May be arranged and divided as a whole.

  The water that has been exchanged with the cooling water heated by the heat generated by the FC unit at the heat exchanging unit 30 and whose temperature has risen is stored in the hot water storage tank 31. Water is taken out from the bottom of the hot water storage tank 31, passes through the piping portion of the hot water storage side connection portion 36, flows into the FC side connection portion 35 via the FC hot water storage connection member 37, and is guided to the heat exchange portion 30.

  The water whose temperature has risen in the heat exchanging section 30 flows from the FC-side connecting section 35 into the hot-water storage-side connecting section 36 via the FC hot-water storage connecting member 37, and then water is returned from the upper part of the hot-water storage tank 31. That is, the water in the hot water storage tank 31 is taken out from the bottom, heated, and then returned to the upper part. The water temperature in the hot water storage tank 31 is low at the bottom, but the upper part is hot and can be used for hot water supply.

  In the present embodiment, the amount of water to be circulated is adjusted so that water at 60 ° C. or higher accumulates in the upper part of the hot water storage tank 31, but is suitable for hot water supply at 40 ° C. or higher and lower than 100 ° C. When the hot water of the fuel cell power generator is used at home or the like, high temperature water (that is, hot water) from the upper part of the hot water storage tank 31 flows into the mixing valve 32.

  The mixing valve 32 mixes water such as water pipes connected from the outside with hot water from the hot water storage tank 31 so that the temperature of the water requested by the user is reached. Hot water at the temperature requested by the user such as a kitchen or kitchen can be used.

  At the start of the operation of the fuel cell power generator or when there is a demand for hot water that exceeds the amount of hot water stored in the hot water storage tank 31, hot water at a temperature requested by the user even at the upper part of the hot water storage tank 31. May not be able to supply.

  At this time, the mixing valve 32 is used after mixing external water if necessary and then heating it with the auxiliary heat source unit 33 to obtain the temperature required by the user. In the present embodiment, the hot water connection / transport between the FC unit and the hot water storage unit and the transmission of the electric signal are performed by the FC hot water storage connection member 37, but the flow of water from the FC unit to the hot water storage unit, the hot water storage unit to the FC unit. The flow of water and the flow of electricity and signal between the FC unit and the hot water storage unit may be performed by separate components.

  Next, installation of the fuel cell power generator will be described. Fuel cell generators have hot water storage units and FC units, and some of these units are separate units, but when there are two units, the area existing between the two units is used for another purpose. In many cases, it is very difficult to do so, and the area occupied by the fuel cell power generation apparatus is very large.

  In addition, when connecting two units, the pipe and wiring processing methods differ depending on the situation at the site, so that the construction at the site takes a great deal of time and labor. In addition, the unit in which the FC unit and the hot water storage unit are integrated as they are is very heavy and large, so it is very difficult to carry in.

  FIG. 8 is a perspective view showing the internal structure of the FC unit of the fuel cell power generator of the embodiment, and FIG. 9 is a perspective view showing the internal structure of the hot water storage unit of the fuel cell power generator of the embodiment.

  The carry-in of the present embodiment holds the first frame that holds many of the components of the FC unit as shown in the perspective view of FIG. 8 and the many components of the hot water storage unit as shown in the perspective view of FIG. The second frame to be carried is carried separately. By carrying in the two units separately, the weight and size can be reduced, and the configuration can be made very easy to install.

  In the fuel cell power generation device of the present embodiment, the first unit and the second unit both have a vertically long configuration in order to reduce the installation area. In order to reduce the installation area, it is not necessary to arrange the components vertically, but in the first unit, the cell stack 23 is placed on the fuel generator 22 in order to reduce the installation area. And the cooling water tank 24 is arranged further above the cell stack 23.

  The fuel gas that has not been used in the cell stack 23 is burned by the burner of the fuel generator 22 and used as heat, but the fuel gas discharged from the cell stack 23 contains a large amount of moisture.

  If the fuel generator 22 is located above the cell stack 23, moisture condensed in the middle of the piping may block the path even for a short time, causing troubles such as the burner being extinguished. When the cell stack 23 is above the fuel generator 22, even if condensation occurs, it is sequentially sent to the burner portion, so there is no blockage due to moisture, and burner combustion occurs stably.

  In addition, the cooling water is stored in the cooling water tank 24 and passes through the inside of the cell stack 23 to be heat exchanged. However, bubbles may be generated by heating or the like. The bubbles generated in the path move to the flow of water or the upper part. However, when the cell stack 23 is arranged at the upper part, the bubbles generated in the cooling water path remain in the cooling water path of the cell stack 23, and the water Although problems such as obstructing the flow occur, by making the cooling water tank 24 at the upper part of the cell stack 23, bubbles can be easily removed, the temperature of the cell stack 23 can be adjusted precisely, and heat exchange can be performed. Since this is performed smoothly, a fuel cell power generator with high exhaust heat recovery can be realized.

  Further, an example of installation is shown in the sketch diagram showing the installation location of the fuel cell power generator of the same embodiment in FIG. The house 51 is built inside a site 53 facing the road 52, and the road 52 and the site 53 enter and exit from a gate 54. The backyard 57 passes through the first passage 55 or the second passage 56.

  In the present embodiment, the fuel cell power generator 1 is installed in the first passage 55. The widths of the first passage and the second passage vary, but in order to enlarge the house 51, it is better to make the width of the first passage and the second passage as small as possible. Since it is stipulated that a house be built at a distance of 50 cm or more from the line, the width of the first passage and the second passage is often 50 cm.

  Since it is difficult to bring a large machine into a 50 cm wide passage, people often carry it in, and in the case of a 50 cm wide passage, many people cannot enter. It is most appropriate to carry in two people, one person before and after.

  The Ministry of Health, Labor and Welfare announced in 1994 the “Guideline for Prevention of Back Pain in the Workplace” (Fundamental No. 547) in order to prevent carriers from having back pain. The weight handled only by human power should be 55kg or less. " Therefore, in this embodiment, the weight of the unit of transport is set to 55 kg or more and 110 kg or less. Thereby, it can carry and carry in safely and easily.

  The loaded first frame 11 and second frame 12 are fixed and integrated by the FC hot water storage frame connecting portion 13. At least one FC hot water storage frame connecting portion 13 may be attached to an arbitrary position in the upper half of the first frame 11 and at least one arbitrary position in the lower half.

  In the present embodiment, a total of four FC hot water storage frame connecting portions 13 are provided, two in the upper half and two in the lower half. In this embodiment, the FC hot water storage frame connecting portion 13 is attached and then the leg 8 is attached. However, the leg 8 is transported in a state where it is attached in advance to the first frame 11 and the second frame 12, etc. Even if the order is changed, it is included in the present invention.

  Thereafter, the exterior plate is attached, the FC unit and the hot water storage unit are connected, and utilities such as water pipes and gas pipes are connected. The order of these operations may be any, but the contents that are the points of the invention will be described.

  The hot water storage unit and the FC unit are connected by connecting the FC side connecting part 35 and the hot water side connecting part 36 by the FC hot water storage connecting member 37. It is important that the two units be connected by using a member that can be created in advance other than the actual situation, such as the FC hot water storage connection member 37, and that it can be performed from the side.

  The connection between the conventional power generation part and the hot water storage part, which is a separate unit, often requires so-called on-site work, such as making piping while measuring dimensions and the like on site. This is because the optimum connection method differs depending on the situation such as the aesthetics and the distance between the two units, such as the pipe passing through the back of the device or the one buried in the ground, depending on the installation location.

  However, according to the method of the present invention, the FC unit and the hot water storage unit can be carried apart, but when installed, they are adjacent and integrated, so the positional relationship is determined regardless of the local situation. Therefore, it is possible to connect easily because a member having a shape optimal for connection can be used in advance, which is created outside the field such as a factory.

  Also, when installing the fuel cell power generation device in a narrow place as shown in FIG. 10, it is not possible to secure a sufficient area for work on the front and back. In other words, in order to install the fuel cell power generation device in a narrow passage portion where a sufficient area for work cannot be secured, it is necessary to perform piping and maintenance at the time of construction from the side.

  In the present embodiment, the FC hot water storage connection member 37 is formed in a J shape as shown in FIG. Thereby, it can connect by applying a force in the direction pushed from the side, and can be removed by applying a force in the pulling direction.

  Moreover, it arrange | positions so that the auxiliary | assistant heat source machine 33 may face the right side surface also in a hot water storage unit. Thereby, the piping of the hot water storage tank 31 and the auxiliary heat source device 33 can be removed by the work from the right side, and even when maintenance occurs, it can be performed by the work on the right side.

  Moreover, since the auxiliary heat source device 33 faces the right side surface, piping with utilities such as a bath, a kitchen, and a washroom can be performed from the right side surface.

  In addition, the FC unit is configured such that the components are thin and arranged vertically when viewed from the side, so that maintenance from the left side can be easily performed. The installation of the components in the vertical direction has the feature that not only the installation area is reduced, but also maintenance is easy.

  In the present embodiment, the FC unit is arranged on the left side and the hot water storage unit is arranged on the right side, but the gist of the present invention is exactly the same even if this is reversed. What is important is to arrange an auxiliary heat source machine on one side of the hot water storage tank 31 and an FC unit on the opposite side. Thus, it can be installed in a narrow passage. In the present embodiment, the FC hot water storage connecting member 37 is an integrated pipe and wiring, but may be separated separately.

  The exterior plate may be installed any time after the first frame 11 and the second frame 12 are connected by the FC hot water storage frame connecting portion 13.

  In the present embodiment, since the height and depth of the first frame 11 and the second frame 12 are the same, a substantially flat front exterior plate 2, rear exterior plate 5, and ceiling exterior plate 6 can be used. . The ability to use a substantially flat exterior plate is simple to manufacture and can be easily removed, attached and transported.

  Further, by making the depths of the first frame 11 and the second frame 12 the same, there is no useless space on the front or the back, and the fuel cell power generation device 1 can be effectively used in a place such as a narrow passage. Can be installed.

  In the present embodiment, the FC unit and the hot water storage unit are connected via the first frame 11 and the second frame 12, respectively. However, the present invention is not limited if the FC unit and the hot water storage unit are detachable. The configuration is not limited to the configuration in which the first frame 11 and the second frame 12 are connected.

  Further, in the present embodiment, the FC unit and the hot water storage unit are connected to the front exterior plate 2, the left side exterior plate 3, the right side exterior plate 4, the rear exterior plate 5, the ceiling through the first frame 11 and the second frame 12, respectively. Although it was covered with the exterior board 6 and the bottom exterior board 7, this invention is exterior via the 1st flame | frame 11 and the 2nd flame | frame 12, if the FC unit and the hot water storage unit are the structures covered with an exterior board. It is not restricted to the structure covered with a board.

(Embodiment 2)
FIG. 11 is a perspective view showing the appearance of the fuel cell power generator according to Embodiment 2 of the present invention.

  As shown in FIG. 11, the front exterior plate 2 is on the front of the fuel cell power generator 1, the left exterior plate 3 and the right exterior plate 4 are on the side, the rear exterior plate 5 is on the back, and the ceiling is on the ceiling. The ceiling exterior plate 6 is provided with a bottom exterior plate 7 on the bottom surface. The fuel cell power generator 1 is connected to a foundation provided on the ground by legs 8.

  The internal configuration will be described with reference to FIGS. FIG. 12 is a perspective view illustrating the configuration of main components inside the fuel cell power generator 1 with the exterior plate removed, and FIG. 13 is a front view illustrating the configuration of main components inside the exterior plate removed. FIG. 14 is a top view showing the configuration of the main components inside with the exterior plate removed, FIG. 15 is a perspective view showing the internal structure of the hot water storage unit of the fuel cell power generator of the embodiment, and FIG. FIG. 17 is a perspective view showing an internal structure of a third frame of the fuel cell power generator of the embodiment, and FIG. 17 is a perspective view showing an internal structure of a fourth frame of the fuel cell power generator of the embodiment. .

  12 to FIG. 17, the same components as those in the first embodiment of the present invention shown in FIG. 5 to FIG.

  12 to 16, the second frame 61 that holds the hot water storage unit having the hot water storage tank 31 does not hold the auxiliary heat source device 33, and the auxiliary heat source device 33 is held by the third frame 62.

  The third frame 62 is connected to the second frame 61 by a hot water storage BK frame connecting portion 63 that is an auxiliary heat source connecting portion. Further, the first frame 11, the second frame 61, and the third frame 62 are placed on the fourth frame 64 shown in FIG. 17, and the fourth frame 64, the first frame 11, and the second frame 61 are placed. One to three of the third frames 62 are connected by a fourth frame connecting portion 65.

  According to the present embodiment, the carry-in can be divided into the first frame 11, the second frame 61, and the third frame 62. When it is desired to increase the capacity of the hot water storage tank 31 or to use a multifunctional auxiliary heat source device 33, holding both the hot water storage tank 31 and the auxiliary heat source device 33 with one frame increases the weight and size. However, according to the present embodiment, since the frames for holding the hot water storage tank 31 and the auxiliary heat source device 33 can be carried separately, the weight of each frame can be reduced and it can be easily carried. Since the size of each frame is reduced, it can be easily transported even when the carry-in route is narrow or bent.

  At the time of installation, first, the fourth frame 64 with the legs 8 is fixed to the foundation. Next, the first frame 11, the second frame 61, and the third frame 62 are carried on the fourth frame 64 in an arbitrary order, and the FC hot water storage frame connection portion 13, the hot water storage BK frame connection portion 63, and the fourth frame are connected. Each frame is fixed and connected by the frame connecting portion 65.

  The FC hot water storage frame connecting portion 13 is at least one above the half height of the first frame 11, and the hot water storing BK frame connecting portion 63 is at least one above the half height of the third frame 62. At least one fourth frame connecting portion 65 may be provided for each of the first frame 11, the second frame 61, and the third frame 62.

  In the present embodiment, two FC hot water storage frame connection portions 13 and two hot water storage BK frame connection portions 63 and six fourth frame connection portions 65 are provided. By using the fourth frame 64, the first frame 11 holding the FC unit and the second frame 61 holding the hot water storage unit can be aligned more easily, and the connection to the foundation is also easy. Can be done.

  Moreover, the 4th flame | frame 64 is only a square-shaped flame | frame, as shown in FIG. That is, the fourth frame 64 is not provided with a portion that holds the center of the bottom.

  With this structure, when the first frame 11 and the second frame 12 and one and the fourth frame 64 are connected, a hand or a tool can be inserted from the bottom. The connection work between them becomes easy, and the installation work becomes easy.

  In the present embodiment, the first frame 11, the second frame 61, and the third frame 62 are held by the fourth frame 64. However, the effect of the fourth frame 64 is that even if only one frame is held. It occurs in the same way for individual pieces.

  The hot water storage unit and the FC unit are connected by connecting the FC side connecting part 35 and the hot water side connecting part 36 by the FC hot water storage connecting member 37.

  The two units are connected from the side using an FC hot water storage connection member 37 that can be prepared in advance outside the site. The hot water storage unit and the auxiliary heat source device 33 are connected from the third frame 62 side, that is, from the opposite side of the FC unit.

  Accordingly, a work space can be secured and installed even in a narrow space as shown in FIG. As a result, the FC unit, the hot water storage unit, and the auxiliary heat source device 33 can be carried apart, but when installed, the frames are adjacent and integrated, so the positional relationship between the frames is in the local situation. Since it is determined regardless, it can be easily connected because it is possible to use a member that is created outside the field such as a factory and is known in advance to have an optimal shape for connection.

  Further, the fuel cell power generator can be installed in a narrow place as shown in FIG. The exterior plate is used anytime after the first frame 11, the second frame 12, and the third frame 62 are connected by the FC hot water storage frame connecting portion 13 or the hot water storage BK frame connecting portion 63 or the fourth frame connecting portion 65. May be.

  In the present embodiment, the first frame 11, the second frame 61, and the third frame 62 have the same height and depth. Thereby, the substantially flat front exterior board 2, back exterior board 5, and ceiling exterior board 6 can be used.

  The shape is simpler than this, and removal, attachment and transportation can be easily performed. In addition, by making the depths of the first frame 11 and the second frame 61 the same, there is no wasted space on the front or the back, and it can be effectively installed in a place such as a narrow passage.

  In the present embodiment, the third frame 62 is connected to the second frame 61. However, a configuration in which the third frame 62 is connected to the first frame 11 is also included in the embodiment of the present invention.

  In the present embodiment, the first frame 11, the second frame 61, and the third frame 62 are all connected to the fourth frame 64, but only the first frame 11 and the second frame 61 are the first. The configuration connected to the four frames 64 is also included in the embodiment of the present invention.

  In the present embodiment, the FC unit, the hot water storage unit, and the auxiliary heat source unit are connected via the first frame 11, the second frame 61, and the third frame 62, respectively. As long as the unit and the auxiliary heat source unit are detachable, the configuration is not limited to the configuration in which the unit and the auxiliary frame are connected via the first frame 11, the second frame 61, and the third frame 62.

  Further, in the present embodiment, the FC unit, the hot water storage unit, and the auxiliary heat source unit are respectively connected to the front exterior plate 2, the left side exterior plate 3, and the right side via the first frame 11, the second frame 61, and the third frame 62. Although it was covered with the surface exterior plate 4, the rear exterior plate 5, the ceiling exterior plate 6 and the bottom exterior plate 7, the present invention is configured so that the FC unit, the hot water storage unit and the auxiliary heat source unit are covered with the exterior plate, The configuration is not limited to being covered by the exterior plate via the first frame 11, the second frame 61, and the third frame 62.

  The fuel cell power generation device of the present invention is useful for various stationary fuel cell cogeneration systems and the like because it can be easily carried in and installed and can be installed in a narrow place.

1 is a perspective view of a fuel cell power generator according to Embodiment 1 of the present invention. Front view showing the appearance of the fuel cell power generator of the same embodiment Left side view showing the appearance of the fuel cell power generator of the same embodiment Right side view showing the appearance of the fuel cell power generator of the same embodiment The perspective view which shows the internal structure of the fuel cell electric power generating apparatus of the embodiment Front view showing the internal structure of the fuel cell power generator of the same embodiment Top view showing the internal structure of the fuel cell power generator of the same embodiment The perspective view which shows the internal structure of FC unit of the fuel cell power generation device of the embodiment The perspective view which shows the internal structure of the hot water storage unit of the fuel cell power generation device of the embodiment A sketch showing the installation location of the fuel cell power generator of the same embodiment The perspective view which shows the external appearance of the fuel cell power generation device in Embodiment 2 of this invention. The perspective view which shows the internal structure of the fuel cell electric power generating apparatus of the embodiment Front view showing the internal structure of the fuel cell power generator of the same embodiment Top view showing the internal structure of the fuel cell power generator of the same embodiment The perspective view which shows the internal structure of the hot water storage unit of the fuel cell power generation device of the embodiment The perspective view which shows the internal structure of the 3rd flame | frame of the fuel cell electric power generating apparatus of the embodiment The perspective view which shows the internal structure of the 4th flame | frame of the fuel cell electric power generating apparatus of the embodiment External view showing a conventional fuel cell power generator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel cell power generation device 2 Front exterior board 3 Left side exterior board 4 Right side exterior board 5 Rear exterior board 6 Ceiling exterior board 7 Bottom exterior board 8 Leg 11 1st frame 12, 61 2nd frame 13 FC hot water storage frame connection Part 21 Oxidant gas supply part 22 Fuel generator 23 Cell stack 24 Cooling water tank 31 Hot water storage tank 33 Auxiliary heat source unit 35 FC side connection part 36 Hot water storage side connection part 37 FC hot water storage connection member 51 House 52 Road 53 Site 54 Gate 55 Passage 56 passage 57 backyard 62 third frame 63 hot water storage BK frame connecting part 64 fourth frame 65 fourth frame connecting part

Claims (14)

  A fuel generator that generates a fuel gas from a raw material gas, an oxidant gas supply unit that supplies an oxidant gas, a cell stack that generates electric power from the fuel gas and the oxidant gas, and recovers heat of the cell stack An FC unit having a cooling water tank for storing cooling water; and a hot water storage unit having a hot water storage tank for storing heat recovered by the FC unit, wherein the FC unit is held by a first frame, and the hot water storage The unit is held by a second frame, the FC unit and the hot water storage unit are detachable, and a fuel cell power generator provided with an exterior plate covering the FC unit and the hot water storage unit.   A fuel generator that generates a fuel gas from a raw material gas, an oxidant gas supply unit that supplies an oxidant gas, a cell stack that generates electric power from the fuel gas and the oxidant gas, and recovers heat of the cell stack An FC unit having a cooling water tank for storing cooling water; and a hot water storage unit having a hot water storage tank for storing heat recovered by the FC unit, wherein the FC unit is held by a first frame, and the hot water storage The unit is held by a second frame, the first frame and the second frame are detachable, and a fuel cell power generator provided with an exterior plate covering the first frame and the second frame .   The fuel cell power generator according to claim 1 or 2, wherein the cell stack is provided at a position higher than the fuel generator, and the cooling water tank is arranged at a position higher than the cell stack.   4. The fuel cell power generation device according to claim 1, further comprising an FC hot water storage connection portion that connects the first frame and the second frame. 5.   5. The FC unit and the hot water storage unit according to claim 1, wherein the FC unit and the hot water storage unit are configured so that connection work of a connection pipe for connecting the FC unit and the hot water storage unit can be performed from one or two directions of the exterior. A fuel cell power generator according to claim 1.   The said 1st frame and the said 2nd frame are the same height, The ceiling exterior board which covers the ceiling of the said 1st frame and the said 2nd frame was made common, The any one of Claim 1 to 5 The fuel cell power generator described in 1.   The first frame and the second frame have the same depth, and at least one of a rear exterior plate covering the back of the first frame and the second frame and a front exterior plate covering the front are common. Item 7. The fuel cell power generator according to any one of Items 1 to 6.   The fuel cell power generator according to any one of claims 1 to 7, wherein an auxiliary heat source unit that heats hot water held in the hot water storage unit is held by the second frame.   A third frame for holding an auxiliary heat source unit having an auxiliary heat source unit for heating hot water held in the hot water storage unit is provided, and the auxiliary heat source unit is detachable from at least one of the FC unit and the hot water storage unit. The fuel cell power generator according to any one of claims 1 to 8.   A third frame for holding an auxiliary heat source unit having an auxiliary heat source unit for heating hot water held in the hot water storage unit is provided, and the third frame is at least one of the first frame and the second frame. The fuel cell power generator according to any one of claims 1 to 8, which is detachable.   11. The fuel cell power generator according to claim 9, further comprising an auxiliary heat source connecting portion that connects at least one of the first frame and the second frame to the third frame.   The third frame and the second frame or the first frame have the same height, and the third frame and the ceiling exterior plate that covers the ceiling of the second frame or the first frame are shared. The fuel cell power generator according to any one of claims 9 to 11.   The third frame and the second frame or the first frame have the same depth, and the front surface of the third frame and the back surface of the second frame or the first frame that covers the back of the first frame The fuel cell power generator according to any one of claims 9 to 12, wherein at least one of the covering front exterior plates is shared.   The fuel cell power generator according to any one of claims 1 to 13, wherein at least the first frame and the second frame are fixed to a fourth frame connected to a foundation.

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