JP4000108B2 - Co-generation system - Google Patents

Description

  The present invention relates to supply and exhaust of cooling air for micro-cogeneration for home use and the like.

  A co-generation system is a system that can supply two or more energies from a single device. For example, an internal combustion engine such as an engine is operated, and a generator is operated by the power of the internal combustion engine. Are supplied to the commercial power supply system in cooperation with each other, and the heat generated in the internal combustion engine is supplied as air conditioning, hot water, or the like.

  In recent years, small-scale cogeneration systems have been developed from the viewpoint of decentralization of electric power generation and efficient use of energy. In such a small-scale cogeneration system, for example, an engine room containing an engine, a generator, etc. is provided on a frame, and a hot water storage room containing a hot water tank is provided adjacent to the engine room. A heat exchanger for dissipating the heat generated by the engine or the like above the engine room and collected in the hot water tank and dissipating heat and a heat dissipating room containing a blower for blowing air to the heat exchanger are provided. ing. Furthermore, in addition to the heat exchanger, a control device for controlling the operation of the engine, power supply, and the like is housed in the heat radiating chamber. A communication port is provided so as to prevent this, and when the blower is operated, the inside of the control device and the engine room are also cooled (see, for example, Patent Document 1).

Recently, the development of an extremely small-scale co-generation system, for example, for home use, has been promoted.
JP 2003-279139 A

  In such a very small-scale cogeneration system, it is necessary to be able to install in a distributed manner because of the installation location, and it is normally separable into the engine room, the hot water storage room, and the heat dissipation room. It was. This is because the control device housed in the heat radiating chamber by the co-generation system needs to be provided adjacent to the engine chamber in terms of controllability and noise resistance.

  However, when the control device and the engine chamber are adjacent to each other as a main body and the heat dissipation chamber can be separated, the engine chamber and the control device cannot be cooled by a blower provided in the heat dissipation chamber. Each control device had to be provided with a cooling device.

  Accordingly, the present invention has been made to solve such problems, and provides a cogeneration system that can reduce the number of parts and efficiently cool the engine room and the control device.

  The invention according to claim 1 includes a casing that is provided with columns that are erected at the four corners on the bottom plate, and that is provided with an exterior plate and a top plate. A cogeneration system comprising an engine room for storing a machine and the like and a control device for controlling the operation of the engine, the generator, etc. at an upper part of the engine room, wherein the first system is provided on one side of the casing. A first opening is provided below the exterior plate to serve as a cooling air suction port for cooling the engine compartment and the control device, and a support column for attaching the first exterior plate is formed to be hollow, and the first is opened downward. 2 opening portions are provided, and the cooling air sucked from the first opening portion is branched into the first cooling air and the second cooling air, and the first cooling air flows into the control device and is supplied to the control device. The inside is cooled and the second cooling air is The inside control device by flowing into said engine compartment with said first cooling air after cooling to cool the engine compartment, it is characterized in that the evacuating from said second opening.

  According to a second aspect of the present invention, in the first aspect, the cooling air path through which the first and second cooling air flows is orthogonal to the first exterior plate and the first exterior plate. An approximately L-shaped partition plate is erected on the bottom plate so that the edge abuts the back surface of the second exterior plate provided in the direction, and the first exterior plate, the second exterior plate, and the A first communication port for flowing the first cooling air into the control device is provided at an upper end portion of the partition plate on the first exterior plate side. A second communication port through which the second cooling air flows into the engine chamber is provided below the second exterior plate side, and further, the control device is cooled above the second exterior plate side. A third communication port through which the first cooling air flows out is provided.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a filter for filtering the cooling air is disposed in the first opening portion obliquely with respect to the flow direction of the cooling air. The first cooling air and the second cooling air are branched on the leeward side of the filter.

  According to a fourth aspect of the present invention, in the first to third aspects of the present invention, the inlet of the first cooling air that communicates with the first communication port to the bottom of the control device on the first exterior plate side. The first cooling air outlet is provided in the vicinity of the inlet, and a fourth communication port is formed in the controller opposite to the inlet and outlet in the controller. Then, an electrical board that partitions the introduction port and the outlet port is provided, and electrical components are arranged on the electrical board, and the first cooling air flowing into the control device is substantially U-shaped in the control device. It is characterized by circulating in the form.

  According to a fifth aspect of the present invention, in the first aspect, the generator driven by the engine is disposed in the engine chamber near the second communication port, and the rotation of the generator is performed. A blower fan is provided on the shaft, and the second cooling air is introduced into the engine compartment together with the first cooling air flowing out from the third communication port.

  According to a sixth aspect of the present invention, in the first aspect of the present invention, a silencer for the first cooling air and the second cooling air is provided adjacent to the second exterior plate side of the control device. An outlet for the first cooling air and the second cooling air is provided on the surface of the silencer on the first exterior plate side, and the first cooling air is provided on a surface opposite to the surface provided with the outlet. And an inlet for the second cooling air is provided, and in the silencer, a silencer plate is alternately provided in the direction of the inlet and the outlet, and a sound absorbing material is provided. It is what.

  According to a seventh aspect of the present invention, in the sixth aspect, the column provided with the second opening is provided with a substantially U-shaped member extending in a vertical direction on the bottom plate. A substantially U-shaped exterior member is provided facing the member to cover the outside of the member to form a hollow column, and a third opening is formed near the upper portion of the surface facing the second opening. And the third opening is connected to the outlet of the silencer.

  According to the first aspect of the present invention, the cooling air that cools the engine compartment and the control device is drawn from one intake port and branched, and the second cooling air is allowed to flow into the engine compartment as it is, Since the other first cooling air flows into the engine compartment via the inside of the control device, the number of parts of the cooling path can be reduced and the first cooling air can be constructed at low cost, and the first cooling air inside the control device is cooled. Since the cooling air is circulated again into the engine compartment, efficient cooling can be performed.

  According to the invention described in claim 2, a substantially L-shaped partition plate is erected on the bottom plate so that the edge abuts the exterior plate, and between the partition plate and the exterior plate, Since the cooling path for the first and second cooling airs is configured, it can be configured at low cost without sacrificing the space in the engine compartment, and the flow path for the first and second cooling airs The flow rate of the first and second cooling air can be reduced, and a communication port for the first cooling air flowing into the control device is provided at the upper end of the partition plate to cool the engine room. By providing the communication port for the cooling air on a surface orthogonal to the surface on the intake port side of the partition plate, it is possible to prevent rainwater from entering the control device and the engine compartment.

  According to the third aspect of the present invention, it is possible to increase the dust capturing area contained in the cooling air sucked from the first opening and reduce the flow resistance to the cooling air.

  According to the fourth aspect of the invention, since the electrical components housed in the electrical box can be cooled from both the front and back surfaces, the electrical components can be efficiently cooled.

  According to the invention described in claim 5, the blower fan is provided on the rotating shaft of the generator driven by the engine, and the generator is provided in the vicinity of the communication port through which the second cooling air flows into the engine compartment. Therefore, it is possible to efficiently cool the second cooling air by flowing it into the engine compartment.

  According to the sixth aspect of the invention, the cooling air can be silenced with a simple configuration.

  According to the seventh aspect of the invention, the exhaust path can be configured without sacrificing the space in the engine room.

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

  First, FIG. 1 is a block diagram illustrating the configuration of the cogeneration system 100.

  Referring to FIG. 1, a cogeneration system 100 includes a main body 1, a heat radiating unit 2, and a hot water storage unit 3. The heat radiating unit 2 is provided with a radiator 25 for releasing heat that has not been collected in a hot water storage tank 30 to be described later to the atmosphere and a cooling fan 26 for cooling the radiator 25. The section 3 is provided with a hot water storage tank 30 having a water supply pipe 32 and a water distribution pipe 33. Further, in the hot water storage tank 30, a water heat exchanger 31 is provided for circulating the cooling water of the engine 10 fed by the cooling water pump 19 and heating the water stored in the hot water storage tank 30. It has been.

  The main body 1 includes an engine 10, a generator 11 driven by the driving force of the engine 10, a system linkage device 12 that supplies power generated by the generator 11 to the commercial power supply system 40, and the commercial Based on the detection sensor 13 for detecting the frequency and phase of the power supply system 40, the operation control of the engine 10 and the detection signal from the detection sensor 13, the system linkage device 12 is tuned to the frequency and voltage of the commercial power supply system 40. A control device 14 to be controlled is housed and provided.

  Further, in the main body 1, a combustion gas supply device 17 that mixes combustion air sucked from the combustion air inlet 15 and fuel such as gas supplied from the fuel pipe 16 and supplies the fuel to the engine 10. An exhaust gas heat exchanger 18 for recovering heat from the exhaust gas discharged from the engine 10 to a cooling water for cooling the engine 10, a cooling water pump 19 for circulating the cooling water, and the exhaust gas to the atmosphere An exhaust muffler 20 for preventing noise when exhausting to the atmosphere and an exhaust top 21 for exhausting the exhaust gas to the atmosphere are provided.

  As shown in the external perspective view of FIG. 2, the main body 1 has columns 5 a to 5 d (columns 5 d not shown) standing at the four corners of the bottom plate 4, and exterior plates 6 a to 6 e ( The exterior plate 6e is not shown) and the top plate 6f is provided, and the housing 9 is configured by providing the leg portion 7 below the bottom plate 4. Inside, an engine chamber 24 and a control device which will be described later are provided. 14 etc. are stored.

  Further, below the exterior plate 6b (first exterior plate) provided on one side surface of the housing 9, a cooling air inlet 22 (first opening) for cooling the engine chamber 24, the control device 14, and the like is provided. And an exhaust port 23 (second opening) for discharging the cooling air is provided below the column 5b to which the exterior plate 6b is attached.

  FIG. 3 is a perspective view of the main body 1 with the exterior plates 6a to 6e and the top plate 6f of FIG. 2 removed.

  In the housing 9, an engine chamber 24 that houses the engine 10, the generator 11, the exhaust gas heat exchanger 18, the exhaust muffler 20, and the like is provided on the bottom plate 4, and above the engine chamber 24, A control device 14 that houses electrical components and the like is provided. Further, the outer plate 6b (first outer plate) and the outer plate 6a (second outer plate) provided in a direction orthogonal to the outer plate 6b are substantially L-shaped so that the edges abut against the back surface of the outer plate 6a (second outer plate). A partition plate 37 is erected on the bottom plate 4, and a first communication port 38 through which first cooling air for cooling the inside of the control device 14 circulates is provided at an upper end portion of the partition plate 37 on the exterior plate 6 b side. A second communication port 39 through which the second cooling air for cooling the inside of the engine compartment 24 circulates below the exterior plate 6a (that is, below the surface orthogonal to the exterior plate 6b provided with the intake port 22). A third communication port 41 for the first cooling air flowing out from the control device is provided above the exterior plate 6a side. A generator 11 that is driven by the driving force of the engine 10 is provided in the engine chamber 24 in the vicinity of the second communication port 39.

  In addition, a filter 35 for filtering the cooling air sucked from the intake port 22 is provided in the interior of the intake port 22 provided in the exterior plate 6b obliquely with respect to the flow direction of the cooling air. On the downstream side of 35, a cooling path for the first cooling air indicated by arrow A and a cooling path for the second cooling air indicated by arrow B are branched and formed. The second cooling air flows into the engine chamber 24 from the second communication port 39 and cools the engine chamber 24 by the fan 36 attached to the rotating shaft of the generator 11 driven by the engine 10. The first cooling air flows into the control device 14 from the first communication port 38 by the operation of the fan 36 and a cooling fan 42 described later, and cools the inside of the control device 14. Yes. Thereby, even if rainwater enters from the intake port 22, there is no fear that the rainwater will enter the control device 14 from the first communication port 38 together with the first cooling air, and a large amount of cooling air is required. There is no concern that the rainwater will enter the engine chamber 24 from the second communication port 39 together with the second cooling air.

  Furthermore, after the inside of the control device 14 is cooled, the first cooling air flows out from the third communication port 41 to the upper side of the second communication port 39, and is sucked from the intake port 22 as indicated by an arrow c. Along with the second cooling air branched from the first cooling air, the air is again sucked into the engine chamber 24 from the second communication port 39.

  Here, as described above, since the filter 35 is provided obliquely with respect to the flow direction of the cooling air sucked from the intake port 22, the dust capturing area of the filter 35 can be increased. Therefore, the dust capturing ability can be improved, and the flow resistance to the cooling air flowing through the filter 35 can be reduced.

  Further, the inside of the control device 14 will be described. As shown in FIG. 4, the first communication port 38 (introduction port) is located on the exterior plate 6 b (first exterior plate) side of the control device 14, and the third communication unit described above. The communication port 41 (outlet port) is also provided in the vicinity of the first communication port 38 on the exterior plate 6b side. In the control device 14, the first communication port 38 and the third communication port 41 are partitioned, and a fourth communication port 46 is provided in the control device 14 on the side opposite to the first communication port 38, 41 side. An electrical component plate 44 is provided so as to be provided, and an electrical component 45 is attached to the electrical component plate 44. In particular, the electrical component 45 a that generates a large amount of heat is attached to the heat radiating plate 46 and attached to the electrical component plate 44. Then, the first cooling air that has flowed into the control device 14 from the first communication port 38 circulates in the control device 14 in a substantially U shape as indicated by an arrow D, and the electrical component 45 The first cooling air is caused to flow out from the third communication port 41 to above the second communication port 39 in FIG.

  Thus, since the 1st cooling air distribute | circulates the inside of the control apparatus 14 in the substantially U shape, and cools the said electrical component arrange | positioned in this control apparatus 14, the said electrical component is made into both front and back surfaces. Since the roller can be cooled, the electrical component can be effectively cooled. As described above, the first cooling air flows out from the third communication port 41, and is sucked into the engine chamber 24 from the second communication port 39 by the fan 36. Therefore, the output of the cooling fan 42 is smaller than when the first cooling air is sucked from the intake port 22 and only the inside of the control device 14 is cooled and exhausted from the exhaust port 23 to the atmosphere. can do.

  As shown in FIGS. 4 and 5, a silencer 47 is provided adjacent to the control device 14 on the side of the control device 14 near the exterior plate 6b. On the surface, an outlet 47b for the first cooling air and the second cooling air is provided. The outlet 47b is located just above the member 48a constituting the column 5b, as will be described in detail later. ing. Further, as shown in FIG. 6A, the silencer 47 is provided with an inlet 47a for the first cooling air and the second cooling air on a surface facing the outlet 47b. In the silencer 47, as shown in FIG. 6B, silencer plates 47c are provided so as to protrude alternately, and a sound absorbing material 47d is attached and covered, so that the first cooling air and the second cooling air are covered. Air circulates in a zigzag like an arrow e.

  Further, the support column 5b provided with the exhaust port 23 (second opening) described above has a packing 48c on the outside of a substantially U-shaped portion 48a as shown in FIG. 7A. An exterior part 48b is provided so as to cover this part 48a, and is provided upright on the bottom plate 4 as a hollow column. As shown in FIG. The opening) is provided in the vicinity of the upper side of the support 5b and on the surface opposite to the surface provided with the exhaust port 23 (second opening), and the exhaust inlet 48 is connected to the outlet 47b of the silencer 47. Connected and provided.

  Thereby, the first cooling air and the second cooling air silenced by the silencer 47 are exhausted from the exhaust port 23 to the atmosphere.

  As described above, according to the present invention, the first cooling air that cools the inside of the control device 14 and the second cooling air that cools the inside of the engine compartment 24 are sucked from the intake port 22. The number of parts constituting 22 can be reduced.

  In an apparatus in which an internal combustion engine such as an engine is housed in a casing, the apparatus can be used for downsizing of the apparatus and efficient cooling in the apparatus.

It is a block diagram which shows the structure of a cogeneration system. It is an external appearance perspective view of a main body. It is an external appearance perspective view of the main body which removed the exterior plate and the top plate. It is sectional drawing which showed the inside of a control apparatus. It is an external appearance perspective view of the main body which removed the exterior plate and the top plate. It is the external view and sectional drawing which showed the structure of the silencer. It is sectional drawing which showed the structure of the silencer and the exhaust port.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 4 Bottom plate 5a-5d Support | pillar 6a-6e Exterior plate 6f Top plate 7 Leg part 9 Case 10 Engine 11 Generator 14 Control apparatus 22 Air inlet (1st opening part)
23 Exhaust port (second opening)
24 Engine room 26 Cooling fan 35 Filter 35
36 Fan 37 Partition plate 38 First communication port 39 Second communication port 41 Third communication port 42 Cooling fan 44 Electrical board 46 Communication port 47 Silencer 47a Inlet 47b Outlet 47c Silencer 47d Sound absorbing material 48 Exhaust inlet 48a Member 48b Exterior member 48c Packing 100 Co-generation system

Claims (7)

  It has columns that are erected at the four corners on the bottom plate, and has a casing configured by providing an exterior plate and a top plate on these columns, and an engine room that houses an engine, a generator, and the like, and the chamber A cogeneration system comprising a control device for controlling operation of the engine, the generator, etc. at the upper part of an engine room, wherein a first opening is provided below a first exterior plate provided on one side of the housing A cooling air suction port for cooling the engine compartment and the control device, a support column to which the first exterior plate is attached is formed so as to be hollow, and a second opening is provided downward. The cooling air sucked from the opening is branched into the first cooling air and the second cooling air. The first cooling air flows into the control device to cool the control device, and the second cooling air. After cooling the inside of the control device Cogeneration system, wherein the first and together with the cooling air is flowed into the engine compartment to cool the engine compartment, is exhausted from the second opening.   The cooling air path through which the first and second cooling air circulates is such that an edge is in contact with the first exterior plate and the back surface of the second exterior plate provided in a direction orthogonal to the first exterior plate. A partition plate having a substantially L shape is erected on the bottom plate, and is configured between the first exterior plate and the second exterior plate and the partition plate, and the first of the partition plates. A first communication port through which the first cooling air flows into the control device is provided at an upper end portion on the exterior plate side, and the second cooling air is below the second exterior plate side of the partition plate. A second communication port that flows into the engine compartment is provided, and a third communication port through which the first cooling air that has cooled the control device flows is provided above the second exterior plate side. The cogeneration system according to claim 1.   A filter for filtering the cooling air is provided inside the first opening at an angle to the flow direction of the cooling air, and the first cooling air and the second cooling air are leeward of the filter. The cogeneration system according to claim 1, wherein the cogeneration system is branched at a side.   In the bottom of the control device on the first exterior plate side, an inlet for the first cooling air communicating with the first communication port is provided, and an outlet for the first cooling air is provided in the vicinity of the inlet, An electrical board that forms a fourth communication port at a position opposite to the introduction port and the outlet port in the control device to partition the introduction port and the outlet port is provided in the control device. The cogeneration system according to any one of claims 1 to 3, wherein the first cooling air that flows into the control device is circulated in a substantially U shape in the control device by disposing an electrical component on the control device. system.   The generator driven by the engine is disposed in the engine room in the vicinity of the second communication port, a blower fan is provided on the rotating shaft of the generator, and the first flowed out from the third communication port. The cogeneration system according to claim 1, wherein the second cooling air is introduced into the engine compartment together with the cooling air.   A silencer for the first cooling air and the second cooling air is provided adjacent to the second exterior plate side of the control device, and the first cooling plate is provided on a surface of the silencer on the first exterior plate side. An outflow port for air and the second cooling air is provided, and an inflow port for the first cooling air and the second cooling air is provided on a surface opposite to the surface on which the outflow port is provided. The cogeneration system according to claim 1, wherein a sound absorbing plate is alternately provided in the direction of the inflow port and the outflow port, and a sound absorbing material is provided. The column provided with the second opening is provided with a substantially U-shaped member extending in the vertical direction on the bottom plate, and an approximately U-shaped exterior member is provided facing this member. And forming a hollow column covering the outside of the member, providing a third opening near the top of the surface facing the second opening, and connecting the third opening to the outlet of the silencer The cogeneration system according to claim 6, wherein