JP2011214362A - Water sprinkling system for panel-type equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water sprinkling system for panel-type equipment, which improves cooling and snow-melting performance by circulation of the water in which water is provided by arranging a water circulation flow path for returning at least part of the water recovered after sprinkle over the panel-type equipment to a water-sprinkling pipe, to reuse the water for sprinkle.SOLUTION: Drive water is sent under pressure from an underground tank 10 to an ejector 5 through a drive water pipe 13 by a submerged pump 14. The water in a water collecting tub 6 is taken into the ejector 5 through an intake pipe part 4a of a water supply pipe 4 under pressure and mixed with the drive water. The mixed water is supplied from the ejector 5 to a sprinkling pipe 3 through a discharge pipe part 4b of the water supply pipe 4, and sprinkled over the surface 2A of a solar panel 2 from a plurality of injection nozzles 3A. The mixed water is then allowed to flow down there, collected in the water collecting tub 6, and resent to the sprinkling pipe 3 through the ejector 5 and the water supply pipe 4. Thus, the water circulation flow path 12 for water sprinkling is formed.

Description

  The present invention relates to a watering system for panel type equipment that sprays water on the surface of the panel type equipment in order to cool various panel type equipment installed outdoors and remove snow on the panel surface.

  In recent years, various types of panel-type devices such as photovoltaic power generation panels and solar hot water panels have become widespread, but since many of these are installed outdoors, the weather conditions at the installation location have a significant impact on the operating status. . For example, some photovoltaic power generation panels receive sunlight when the weather is sunny in the summer, causing the panel surface temperature to rise to 80 ° C. or higher, thereby reducing the amount of power generation to about 80%. For this reason, cooling may be required to improve power generation efficiency.

  In addition, a photovoltaic power generation panel generates power from sunlight applied to the panel surface. If the panel surface is soiled by adhesion of dust or the like in the outside air (air) or covered with snow, power is generated. In some cases, the light reception rate of the element may be reduced or light reception may be disabled. For this reason, it is necessary to remove dirt and snow from the panel surface as appropriate.

  Here, for cooling, snow melting or washing of the panel-type equipment, water spray on the panel surface is generally used, and it is also installed outdoors in Patent Document 1 (see Japanese Patent Application Laid-Open No. 2003-56135) described below. A watering device for cooling a panel type device or removing snow or dirt is described.

  By the way, the panel type equipment installed on the roof has a panel surface heated by intense sunlight in the fine weather in summer, as mentioned above, while in the snowy area in winter, Snow on the panel surface is well over 10cm. For this reason, it is expected that a large amount of watering is required for watering operation on the panel type equipment.

  However, the purpose of introducing such panel-type equipment is to effectively use environmental resources (including various energy resources), and the main premise is that maintenance costs including operation costs must be reduced. If a large amount of tap water is used as a water supply source, it is contrary to the purpose of introducing panel-type equipment, and the water charge required for watering increases operating costs.

  In addition, it is conceivable to use groundwater as a source of water for sprinkling, but if the penetration rate of panel-type equipment is further improved, there is a concern that the amount of groundwater used will become large. It is also possible that environmental problems such as lowering of ground level, subsidence, etc. will occur separately. For this reason, groundwater is not necessarily suitable as a water supply source for watering.

  Above all, unrestricted use of groundwater may cause environmental destruction such as lowering of the groundwater level or depletion of groundwater, which is against the environmental conservation that is one of the reasons for introducing various panel-type devices. it is conceivable that.

  Then, about the watering apparatus regarding a panel type apparatus, as already published in patent document 1, rainwater is stored beforehand in the water tank installed in the basement, and this stored water is used as a water source for watering. Has been proposed.

  In this rainwater utilization system described in Patent Document 1, rainwater is collected by an eaves and stored in a water storage tank. If necessary, the stored rainwater is sent to a watering pipe by a supply pump, and solar power generation is performed from the watering pipe. By spraying rain water on the surface of the panel, the solar power generation panel is cooled and snow is prevented, and the sprinkled water is collected by the eaves and returned to the water tank again.

JP 2003-56135 A

  However, in the rainwater utilization system described in Patent Document 1 described above, all the water sprayed on the photovoltaic power generation panel is collected by the rain gutter and returned to the underground water tank. There is a problem that a large amount of water for watering must be retransmitted (pumped) with a pump.

  For this reason, when installing pipes that send water from the water tank to the roof on the outer wall surface of the building, the pipes for water supply naturally increase in diameter. There was a problem that the beauty of the building was damaged by piping on the outer wall surface.

  In particular, the appearance of the building is important as an element that determines the value of the building, and it is also a part that reflects the owner's feelings (including users, the same applies hereinafter), which is relatively strongly reflected. There is a problem that installing the attachment is difficult for the owner to accept.

  Therefore, in order to solve the above-described problems, the present invention provides a small-sized flow path even when a flow path for pumping water from a water source to the roof by a pumping device is provided on the outer wall surface of a building. It is an object of the present invention to provide a watering system for panel type equipment that can minimize the adverse effects on the external aesthetics of a building.

  In order to achieve this object, the watering system for panel-type equipment according to claim 1 sprays water on a panel-type equipment having a panel surface that is installed on the roof, and the panel-type equipment is inclined. A water collecting member that is disposed at the lower end of the direction and receives and collects water that has flowed down the panel surface of the panel type device, a water pipe having a water spray hole that sprays water on the panel surface of the panel type device, and A pumping device for pumping water supplied to the watering pipe from the water source toward the roof, and a part of a flow path for supplying water from the water source to the watering pipe through the pumping device, the pumping device When the pumped water passes, the water is sucked from the water collecting member, and the water sucked from the water collecting member and the water pumped by the pumping device are mixed and discharged toward the sprinkling pipe. Circulating flow generator The circulation flow path is formed on the roof so that water circulates in the order of the water spray pipe, the panel surface of the panel type device, and the water collecting member from the circulation flow generator through the circulation flow generator. And.

  According to the watering system for panel-type equipment according to this aspect, when watering operation is performed, water is pumped and supplied from the water source to the circulating flow generator by the pumping device. The water pumped to the circulating flow generator passes through the circulating flow generator, so that water is sucked into the circulating flow generator from the water collecting member, and the sucked water is pumped from the pumping device. And then discharged toward the watering pipe. And the water discharged from this circulating flow generator is sprayed on the panel surface of a panel type apparatus from the water spray hole in a water spray pipe.

  The water sprayed on the panel surface flows down the panel surface along the inclination direction toward the lower end, flows into the water collecting member, and is collected. And the water collect | recovered by the water collection member is again suck | inhaled by the circulation flow generator, and is sent to a sprinkling pipe. As a result, a water circulation channel is formed in which the water sprayed on the panel surface of the panel type device is collected by the water collecting member and returned to the water spray pipe.

  Here, when the watering operation is to cool the panel type device, the panel surface of the panel type device is cooled by the vaporization heat of water continuously sprayed from the watering pipe, and the temperature is lowered. On the other hand, when the watering operation is to melt snow on the panel type equipment, the snow on the panel surface of the panel type equipment is melted by the heat of fusion of water that is continuously sprinkled on the panel surface by the watering pipe. )

  In addition, since the circulation channel is formed on the roof, the difference in the level of water flowing through this circulation channel can be kept below the level difference from the roof ridge to the eaves. The difference in height is greatly reduced compared to the difference in height when pumping water from the ground to the roof. For this reason, the flow of water pumped from the water source by the pumping device without using a power source such as a pumping device different from the pumping device that pumps the water from the water collecting member to the water sprinkling pipe. It is sufficient to use a circulating flow generator using

  By the way, as described in Patent Document 1, if all the water whose temperature has risen due to cooling of the panel-type equipment is continuously sent back to the underground water storage tank, the hot water recovered from the roof is the total water stored in the water storage tank. It is also conceivable that the temperature is raised and the cooling effect (cooling capacity) by the stored water in the water storage tank is lowered. For example, if the watering operation is repeated for a long time or many times at regular intervals during the daytime in the fine weather in summer, the water temperature in the water tank rises every time, and cooling by the watering operation is repeated each time the watering operation is repeated. There is also a possibility that an effect may fall.

  On the other hand, when melting snow on the panel surface of the panel-type equipment by melting water, as described in Patent Document 1, all the water after melting that has been deprived of melting heat and melting heat by melting snow to the underground water tank If it sends it back, this cold water will reduce the temperature of the whole stored water in a water tank, and the snow melting effect (snow melting ability) by the water stored in a water tank may also be reduced. Therefore, in consideration of these points, the watering system for panel-type equipment according to claim 2 is configured as follows.

  The panel-type device watering system according to claim 2 is the panel-type device watering system according to claim 1, further comprising a water return channel for returning surplus water from the water collecting member forming a part of the circulation channel to a water source. The water source is a water tank installed below the roof.

  According to the watering system for panel-type equipment according to this second aspect, in addition to acting in the same manner as in the first aspect, surplus water from the water collecting member is sent back to the water storage tank through the water return channel, and the water storage tank Mix in the water inside. As a result, the surplus water from the water collecting member becomes part of the water stored in the water storage tank, and is pumped again by the pumping device to the watering pipe through the circulation flow generator, and water is sprayed from the watering pipe to the panel surface. As reused.

  Moreover, not all of the water that has flowed down the panel surface in this way is sent back to the water storage tank, but a part of it is collected by the water collecting member and circulates in the circulation flow path, and the rest of the water flows through the return flow flow path. Since the water is sent back to the water tank, the amount of water per unit time sent back to the water tank can be reduced as compared with the case where all the water is sent back to the water tank. For this reason, in the case where the water temperature in the water tank fluctuates due to the temperature of the water sent back to the water tank, such fluctuation can be suppressed, and the cooling efficiency associated with the water temperature fluctuation in the water tank Or the fall of snow melting efficiency can be prevented.

  Hereafter, the modification of this invention is shown. The panel-type device watering system according to a first modification is the panel-type device watering system according to claim 1 or 2, wherein the water return channel receives and collects surplus water from the water collecting member. And a water collecting path having one end connected to the second water collecting member and the other end connected to the water source, and the second water collecting member is disposed on a roof eave. The water recovery path is provided with a vertical rod whose one end is connected to the eaves as a part thereof.

  According to the watering system for panel-type equipment of this first modified example, in addition to the operations and effects similar to those of claim 1 or 2, the eaves and vertical shaft of the building are the second water collecting member and the water recovery path. Therefore, it is not necessary to separately provide the second water collecting member and a part of the water recovery path in the building, and the change in the appearance of the building can be minimized by utilizing the building facilities.

  The water spray system for panel type equipment of the second modification is the water sprayed from the water collecting member to the circulating flow generator in the water spray system for panel type equipment according to claim 1 or 2 or the first modification. The amount of water exceeds the amount of water that is pressed into the circulating flow generator by the pumping device.

  According to the sprinkling system for panel-type equipment of the second modification, in addition to the same operations and effects as those of any one of claims 1 and 2 or the first modification, suction is performed from the water collecting member to the circulation flow generator. Since the amount of water to be pumped exceeds the amount of water that is pumped into the circulating flow generator by the pumping device, the pumping amount by the pumping device is less than 1/2 of that of the conventional type (however, "0" Can be reduced.

  In other words, the amount of water supplied to the sprinkler pipe can be more than twice the amount of water supplied by the pumping device, so the cross-sectional area of the water flow path from the water source to the circulating flow generator can be reduced. It can also be reduced to less than half that of the conventional size, and the size of the flow path can be reduced.

  A water spray system for panel type equipment according to a third modified example is the water spray system for panel type equipment according to claim 2 or any one of the first or second modified examples quoting claim 2, wherein The amount of water sucked from the water collecting member exceeds the amount of surplus water sent back to the water source by the water return channel.

  According to the water spray system for panel-type equipment of the third modified example, in addition to the same functions and effects as those of either the second or the second modified example quoting claim 2 or claim 2, Since the amount of water sucked into the circulating flow generator from the water member exceeds the amount of surplus water sent back to the water source by the return flow passage, the amount of water sent back to the water source is less than 1/2 of the conventional type ( However, it is not “0”.), And the water temperature fluctuation in the water tank is suppressed accordingly.

  The panel-type device watering system according to a fourth modification is the panel-type device watering system according to claim 1 or 2 or any one of the first to third modifications, wherein the circulating flow generator is pumped by the pumping device. A speed increasing portion that increases the flow velocity of the water flow that passes through, a mixing portion that decreases in pressure due to the passage of the water flow that flows out of the speed increasing portion, and a pressure drop in the mixing portion within the mixing portion. A suction portion for sucking water from the water collecting member, and a flow of water flowing in from the suction portion and the speed increasing portion and mixed in the mixing portion to increase the pressure to the sprinkling pipe And a discharge section for discharging the liquid.

  According to the sprinkling system for panel-type equipment of the fourth modified example, in addition to the same operations and effects as those of claim 1 or 2 or any one of the first to third modified examples, The flow of water that is pumped to the generator is increased in flow rate by passing through the speed increasing part, and flows out to the mixing part, causing a pressure drop in the mixing part, and this pressure drop causes the pressure to flow through the suction part. Water is sucked into the mixing part from the water collecting member and mixed with the sucked water in the mixing part. And the water flow mixed by this mixing part passes through a discharge part, a pressure rises again, and it discharges toward a sprinkling pipe. In this way, the water flow discharged from the circulating flow generator is sprinkled on the panel surface of the panel type device from a plurality of water sprinkling holes in the water sprinkling pipe.

  According to the watering system for panel-type equipment of the present invention, a circulation flow path partially including the panel surface itself to be sprinkled is created on the roof via the circulation flow generator, and is circulated by this circulation flow path. Water can be repeatedly sprinkled on the panel surface, so the amount of water pumped from the water source by the pumping device can be suppressed, and the flow path for pumping water to the roof by the pumping device is reduced accordingly. The flow path layout that does not impair the aesthetics of the building can be realized more easily, which has the effect of being a major factor that encourages users to use the watering system.

  Moreover, since the amount of water supplied from the water source to the roof by the pumping device can be reduced, there is also an effect that the amount of water supplied from the water source can be suppressed. For this reason, for example, when using tap water or groundwater as a water source, it is possible to contribute to environmental conservation by reducing the amount of use, and a water tank is installed on the ground or underground as a water source. Even in such a case, the water storage capacity can be made relatively small, the labor and cost associated with the installation of the water tank can be reduced, and the installation space for the water tank can be secured even in a small site. There is an effect.

It is a block diagram of the panel watering system which is one Embodiment of the watering system for panel type apparatuses of this invention. It is a schematic perspective view on the roof of the building where a solar panel is installed. It is the schematic which showed the internal structure of the ejector. It is the block diagram which showed the electrical structure of the panel watering system.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. FIG. 1 is a configuration diagram of a panel watering system 1 which is an embodiment of a watering system for panel-type equipment of the present invention, and FIG. 2 is a schematic perspective view on a roof 71 of a building 70 where a solar panel 2 is installed. FIG. The panel watering system 1 is a system for spraying water for cooling or melting snow to panel-type equipment installed outdoors on a roof 71 of a building 70 such as for solar power generation or solar hot water.

  In addition, even if the solar panel 2 in this embodiment is an integrated type built in the roof 71 of the building 70, the solar panel 2 is a separate type that is separately installed and fixed on the roof 71 of the building 70. Also good.

  As shown in FIGS. 1 and 2, the panel watering system 1 of the present embodiment is for a solar power generation panel (hereinafter simply referred to as “solar panel”) 2 installed on a roof 71 of a building 70. It is a device for spraying water (hereinafter simply referred to as “watering”). The solar panel 2 is installed on one inclined surface of the gable roof 71 of the building 70, and a sloped surface having a slope equal to or higher than the slope of the roof 71 (the panel surface of the present invention). The same applies hereinafter.) 2A. This solar panel 2 has the property of absorbing heat from its surface 2A and dissipating heat.

  As shown in FIG. 2, the watering pipe 3 is a pipe (pipe) for watering the surface 2 </ b> A of the solar panel 2. It is formed continuously in the width direction of the panel 2 (the same direction as the ridge direction of the roof 71). A discharge port 5B of the ejector 5 is connected to a base end portion of the water spray pipe 3 via a discharge pipe portion 4b of the water supply pipe 4, and a tip end portion of the water spray pipe 3 is closed.

  A plurality of injection nozzles 3 </ b> A are provided on the outer peripheral portion of the watering pipe 3 at a predetermined interval from the base end in the continuous direction of the watering pipe 3 to the tip. The plurality of spray nozzles 3 </ b> A have water sprinkling holes for sprinkling water, and the water pressure-fed and supplied to the sprinkling pipe 3 by the ejector 5 is diffused in a fan shape from the water sprinkling holes toward the surface 2 </ b> A of the solar panel 2. Water is sprayed in the state of letting it.

  In this way, the spray nozzle 3A diffuses in a fan shape from the water spray holes and discharges water, so that the water can be diffused over a wide area of the surface 2A of the solar panel 2, and its cooling effect can be enhanced. The snow can be melted so as to cut snow on the surface 2A of the solar panel 2, and the snow melting effect can be enhanced.

  Here, the spray nozzle 3A of the water spray pipe 3 described above diffuses water in a fan shape, but the spray form of the spray nozzle of the water spray pipe 3 is not necessarily limited to this, and the water spray hole The water may be sprayed in the form of a mist. In this way, by spraying water in the form of a mist through the spray nozzle of the spray method, the water cooling action by heat exchange with the outside air generated in the air until reaching the surface 2A of the solar panel 2 is enhanced. The solar panel 2 can be cooled more effectively by using the water cooled by the cooling action.

  In particular, according to the panel watering system 1 of the present embodiment, the submersible pump 14 not only supplies water to the watering pipe 3 but also the ejector 5 that sucks water from the water collecting tank 6 as described below. Since it also serves as a driving source, the water supply pressure to the sprinkling pipe 3 is set high, so that water can be supplied to the sprinkling pipe 3 at a high water pressure by itself, and spraying of water using a spray nozzle using a spray system A suitable environment can be secured.

  As shown in FIGS. 1 and 2, the water collecting trough 6 receives and collects water (including rainwater and snowmelt water) flowing down the surface 2 </ b> A of the solar panel 2. Is disposed at the lower end in the inclination direction. Further, the water collecting trough 6 is continuously formed in the width direction of the solar panel 2. Separately from the catchment basin 6, the eaves 7 continuous to the eaves of the roof 71 of the building 70 is also installed.

  A drain hole 6A, which is a small hole for draining water, is formed in the bottom of the water collecting basin 6. The drain hole 6A is a drain hole for preventing water from remaining in the water collecting basin 6 and freezing. The amount of drainage from the drain hole 6A is sucked from the water collecting basin 6 by the ejector 5. It is formed to be extremely small compared to the amount of water. This is to prevent the amount of water discharged from the drain hole 6A from increasing and the amount of water sucked into the ejector 5 from the water collecting trough 6 from being insufficient. The drain hole 6A may be closed with a stopper in the time when the water remaining in the water collecting trough 6 is not likely to freeze, for example, in summer.

  The eaves 7 is intended to collect rainwater that has flowed down along the roof 71 and the solar panel 2, but in this embodiment, the water collected by the water collection tank 6 during the watering operation is the water collection tank. When overflowing from 6, it also has the function of recovering the overflow water (surplus water) again. For this reason, at the time of watering operation or raining (including snowfall), the overflow water from the water collecting basin 6 is collected by the eaves basin 7 and returned to the underground tank 10 through the vertical culvert 8 and the rainwater collector 9. be able to.

  Further, openings for allowing water to flow in are formed in the upper part of the water collecting basin 6 and the upper part of the eaves basin 7, respectively, and these openings have water permeability formed in a plate shape or a net shape having a large number of pores. Each of the dust removal filters 11 is covered. The dust removal filter 11 prevents water from flowing into the water collecting basin 6 or the eaves 7 through the pores, and preventing dust larger than the pores from entering the water collecting basin 6 or the eaves 7. is doing.

  The ejector 5 is a device that is used to form a water circulation channel 12 by recirculating water collected on the surface 2 </ b> A of the solar panel 2 and collected by the water collecting tank 6 to the watering pipe 3. Here, the circulation channel 12 is a circuit for collecting water sprayed on the roof 71 and circulating the water for reuse as water for water spraying. The ejector 5 and the water pipe provided on the roof 71 4, the water sprinkling pipe 3, the surface 2 </ b> A of the solar panel 2, and the water collecting tank 6.

  The ejector 5 is provided in the middle of the water supply pipe 4 that connects the water sprinkling pipe 3 and the water collecting basin 6, and mainly has a discharge port of the submersible pump 14 in the underground tank 10 via the drive water pipe 13. A drive water port 5 </ b> A connected, a discharge port 5 </ b> B connected to the base end portion of the sprinkling pipe 3 via the discharge pipe part 4 b of the water supply pipe 4, and a water collecting tank 6 via the suction pipe part 4 a of the water supply pipe 4. And a suction port 5C coupled to the.

  FIG. 3 is a schematic view showing the internal structure of the ejector 5. As shown in FIG. 3, the ejector 5 includes a tapered nozzle chamber 51 that communicates with the driving water port 5 </ b> A and has a cross-sectional area that gradually decreases in the water flow direction. An opening 51A is formed. The nozzle chamber 51 increases the flow rate of water that is press-fitted into the drive water port 5 </ b> A while decreasing the water pressure, and ejects the nozzle port 51 </ b> A from the nozzle port 51 </ b> A toward the diffuser chamber 52. A diffuser chamber 52 is provided at the tip of the nozzle port 51A.

  The diffuser chamber 52 has at least a portion where the cross-sectional area gradually increases in the direction of water flow injected from the nozzle port 51A. Between the inlet of the diffuser chamber 52 and the nozzle port 51A of the nozzle chamber 51, there is provided a connection space 53 that communicates with both, and this connection space 53 is also communicated with the suction port 5C through the suction passage 54. Yes. In this connection space 53, the ejection water flow of the driving water ejected from the nozzle port 51A and the water sucked from the suction port 5C are mixed.

  According to the ejector 5, the water stored in the underground tank 10 is pressure-fed and supplied through the drive water pipe 13 by the submersible pump 14, and is press-fitted into the nozzle chamber 51 through the drive water port 5A. The water press-fitted into the nozzle chamber 51 increases in flow velocity and decreases in pressure as it passes through the nozzle chamber 51, and is rapidly moved toward the inlet of the diffuser chamber 52 so as to pass through the connection space 53 from the nozzle port 51 </ b> A. It is injected.

  Then, the pressure in the connection space 53 through which the water jetted at high speed passes is reduced, and the stored water in the catchment basin 6 is caused by this pressure drop through the suction pipe portion 4a of the water supply pipe 4 to the suction port 5C of the ejector 5. And is sucked into the connection space 53 through the suction port 5C. The water sucked in this way is mixed with the jet water flow from the nozzle port 51 </ b> A of the nozzle chamber 51 in the connection space 53.

  The water flow mixed in the connection space 53 flows into the diffuser chamber 52 from the entrance thereof, and as it passes through the diffuser chamber 52, its speed is reduced and the pressure is increased. The water is discharged from the discharge port 5B (exit of the diffuser chamber 52) through the discharge pipe portion 4b of the water supply pipe 4 and is pumped to the water spray pipe 3.

  As shown in FIG. 1 and FIG. 2, the ejector 5 is installed on the roof 71 of the building 70 at a location adjacent to the location where the catchment 6 is disposed. The installation location of the ejector 5 is lower than the installation location of the water sprinkling pipe 3, and is equal to or higher than the installation location of the catchment 6. Preferably, the ejector 5 is installed so that the discharge port 5B of the ejector 5 is higher than the surface of the recovered water in the water collecting basin 6.

  The water pipe 4 is installed on the roof 71 of the building 70 together with the ejector 5, and the discharge pipe portion 4 b of the water pipe 4 extends in the ridge direction of the roof 71 along the inclined surface of the roof 71 of the building 70. It extends in a straight line in a direction perpendicular to the direction (see FIG. 2).

  In the present embodiment, the ejector 5 is installed on the roof 71 of the building 70. However, the installation location of the ejector 5 is not necessarily limited to this. For example, the ejector 5 is located higher than the underground tank 10. If the outlet 5B of the ejector 5 is lower than the sprinkling pipe 3 and equal to or higher than the recovered water level in the catchment 6, the outer wall of the building 70 and the building 70 such as a balcony can be used. It may be an accessory.

  In this way, by circulating the water collected by the water collecting trough 6 through the ejector 5 and the water pipe 4, the pumping amount (discharge amount) by the submersible pump 14 from the underground tank 10 is reduced to 1/2 to 1 /. The submersible pump 14 can be reduced in size accordingly.

  Further, as a result of the discharge amount of the submersible pump 14 being reduced in this way, the diameter of the driving water pipe 13 that supplies driving water from the submersible pump 14 to the ejector 5 can be reduced, so that the outer wall surface of the building 70 has a large diameter. It is not necessary to pipe the drive water pipe 13, and the appearance of the building 70 can be prevented from being damaged.

  As shown in FIG. 1, the underground tank 10 is a large-capacity container for storing water that mainly stores rainwater, and is buried in the ground adjacent to the building 70. A step is provided on the inner bottom surface of the underground tank 10, and a submersible pump 14 is installed on the inner bottom surface on the upper side of the step. Further, a ball tap 15 for detecting the water level of the stored water and taking in and out the tap water is installed in the underground tank 10.

  The bottom of the underground tank 10 is provided with a slope that descends from the upper step portion 10A toward the lower step portion 10B. At the bottom of the underground tank 10, deposits in the underground tank 10 easily fall from the upper stage portion 10 </ b> A to the lower stage portion 10 </ b> B due to this slope, and as a result, are difficult to flow into the suction port of the submersible pump 14 installed in the upper stage portion 10 </ b> A. It has a structure.

  Note that a heater (not shown) for preventing the stored water from freezing may be installed in the underground tank 10, and in particular, such a heater is necessary in a cold district. Conceivable. However, the amount of heat generated by the heater for preventing freezing does not need to be excessively large. For example, any heat source can be used as long as the water stored in the underground tank 10 can be heated to about 10 ° C. Further, in order to further enhance the snow melting effect, the stored water in the underground tank 10 may be heated by a boiler to be warmed.

  The submersible pump 14 is an underwater installation type fluid transport machine that pumps drive water to the ejector 5, and is submerged in the stored water in the underground tank 10. The submersible pump 14 is connected to the discharge port at the lower end (the other end) of the drive water pipe 13 and pumps the stored water in the underground tank 10 to the drive water port 5A of the ejector 5 through the drive water pipe 13 as drive water.

  The amount of water pumped by the submersible pump 14 is substantially equal to the amount of overflow water from the catchment basin 6 except for the evaporation and vaporization of the sprinkled water, the snowmelt moisture and other unrecovered parts of the catchment basin 6. In addition, since most of the sprinkled water is circulated through the circulation channel 12, the discharge amount of the submersible pump 14 can be reduced, and accordingly, the amount of water that overflows from the water collecting tank 6 and is sent back to the underground tank 10 is suppressed. it can.

  And since the amount of water sent back to the underground tank 10 from the water collecting trough 6 is suppressed in this way, the temperature rise of the stored water in the underground tank 10 can be suppressed during the cooling operation. Decrease can be prevented. Furthermore, since the temperature drop of the stored water in the underground tank 10 can be suppressed during the snow melting operation, it is possible to prevent the snow melting effect from being lowered due to watering.

  The ball tap 15 is provided with a floating ball 15A that moves up and down by receiving buoyancy from the stored water according to fluctuations in the water level of the stored water, and the water stop that opens and closes the water supply opening of the water pipe 16 according to the lifting and lowering operation of the floating ball 15A. And a main body 15B with a built-in stopper. According to this ball tap 15, when the floating ball 15A is lowered, the water supply opening of the water pipe 16 is opened by the stop cock and tap water is injected into the underground tank 10, while when the floating ball 15A is raised, the stop cock The water supply port of the water pipe 16 is closed and water injection is stopped.

  Thereby, for example, even in the case of an emergency such as drought with low rainfall, even if the amount of water stored in the underground tank 10 decreases and the amount of water sprayed by the sprinkling pipe 3 may be insufficient, The amount of water necessary for watering can be replenished from the water pipe 16 into the underground tank 10 in an emergency manner.

  The drain port 17 is provided on the upper side surface of the underground tank 10 and above the ball tap 15. The drain port 17 is connected to the starting end of a drain pipe 18. Further, the drain pipe 18 has a terminal end communicating with the side groove 19 and is buried in the ground in a state where the drain pipe 18 is inclined downward with a certain inclination from the drain port 17 of the underground tank 10 to the side groove 19. In the middle of the drain pipe 18, a rainwater infiltration basin 20 buried in the ground is provided.

  The vertical gutter 8 discharges the water collected by the eaves gutter 7 to the underground tank 10 or the rainwater infiltration gutter 20, and the upper end of the vertical gutter 8 and the bottom of the eave gutter 7 are connected. This vertical gutter 8 is suspended from the eaves gutter 7, and its lower end is connected to a rainwater permeation gutter 20 directly below.

  The rainwater collector 9 (rain water flow device) is provided in the middle of the vertical rod 8 connected to the rainwater infiltration rod 20, and the rainwater inlet 9B, the rainwater recovery port 9C, and the remaining water are provided in the cylindrical main body 9A. And a discharge port 9D. The rainwater inlet 9 B of the rainwater collector 9 is connected to the eaves 7 through the vertical rod 8, and the residual water drain port 9 D of the rainwater collector 9 is connected to the rainwater infiltration rod 20 via the vertical rod 8.

  This rainwater collector 9 is provided with an annular groove portion 9F between an inner peripheral wall of the cylindrical main body 9A and a cylindrical wall portion 9E erected from the inner bottom surface thereof, and a rainwater recovery port 9C communicates with the annular groove portion 9F. Has been. The rainwater recovery port 9C is connected to the upper end of a rainwater recovery pipe 21, and the lower end of the rainwater recovery pipe 21 is connected to the underground tank 10. Further, the inner periphery of the cylindrical wall portion 9E of the rainwater collector 9 is a residual water discharge port 9D.

  In addition, in the cylindrical main body 9A of the rain water collector 9, there is disposed a water permeable mortar-shaped internal filter 9G having a large number of pores. This internal filter 9G separates unnecessary substances from the water discharged from the rainwater inlet 9B through the annular groove 9F to the rainwater recovery port 9C.

  The inner filter 9G has an upper end that is attached to the entire inner wall surface of the cylindrical main body 9A, and a lower end that is attached to the entire upper end of the cylindrical wall 9E. The space connecting the rainwater inlet 9B and the residual water outlet 9D is partitioned from the annular groove 9F and the space above it.

  According to this rainwater collector 9, in the case of normal rainfall or during watering operation, most of the water flowing down the vertical rod 8 and flowing in from the rainwater inlet 9B travels along the inner wall surface of the cylindrical main body 9A. It passes through the internal filter 9G, flows into the annular groove 9F, is discharged from the rainwater recovery port 9C to the underground tank 10 through the rainwater recovery pipe 21, and is recovered.

  At this time, impurities such as dust mixed in the water are prevented from entering the annular groove portion 9F by the internal filter 9G, fall down the mortar surface of the internal filter 9G, and part of the water from the residual water discharge port 9D. 8 is discharged into the rainwater infiltration tub 20.

  On the other hand, when a large amount of rainwater flows down the downpipe 8, it flows down so that the rainwater falls in the downpipe 8. For this reason, most of the water flowing in from the rainwater inlet 9B of the rainwater collector 9 does not flow into the annular groove 9F through the internal filter 9G of the rainwater collector 9, but is discharged from the residual water discharge port 9D to the rainwater infiltration basin 20. Therefore, excessive rainwater is prevented from flowing into the underground tank 10.

  In the rainwater infiltration tank 20, the stored water overflowed from the underground tank 10 is discharged through the drain pipe 18, and the water drained here is drained by osmotic diffusion from the bottom of the rainwater infiltration tank 20 into the ground. Is done. Further, when water exceeding the amount of drainage of the rainwater seepage trough 20 flows from the underground tank 10 or the vertical trough 8, the overflowed water from the rainwater seepage trough 20 is discharged to the side groove 19 through the drain pipe 18.

  The switching valve 22 is provided on the ground portion outside the underground tank 10 in the middle of the drive water pipe 13, and the supply destination of the water pumped from the submersible pump 14 is either the ejector 5 side or the emergency water purifier 23 side. It is a switching valve that switches from one to the other. Normally, the switching valve 22 connects the discharge port of the submersible pump 14 to the drive water port 5A of the ejector 5, and the drive water is supplied from the underground tank 10 to the ejector 5 through the drive water pipe 13. .

  The emergency water purifier 23 is a facility that takes in the water flowing through the drive water pipe 13 through the switching valve 22 and purifies the water stored in the underground tank 10. For example, in order to ensure drinking water in an emergency such as a disaster belongs to. A Y-type strainer 24 is provided in the middle of the piping between the emergency water purifier 23 and the switching valve 22, and the water supplied from the underground tank 10 through the driving water pipe 13 via the switching valve 22 is Y-type strainer. It is filtered by 24 and supplied to the emergency water purifier 23.

  According to the emergency water purifier 23, the water supplied from the underground tank 10 is purified by passing through the segment filter 23A, the carbon filter 23B, and the reverse osmosis membrane filter 23C in this order, and the amount of water is adjusted by the water supply valve 23D. And discharged from the water supply port 23E. The reverse osmosis membrane filter 23C is also connected to the underground tank 10 through a drain drain pipe 23F.

  FIG. 4 is a block diagram showing an electrical configuration of the panel watering system 1. As shown in FIG. 4, the panel watering system 1 mainly includes an operation panel 31 used for operation of the panel watering system 1, a temperature sensor 32 that detects the surface temperature of the solar panel 2, and the above-described underground A drive circuit (hereinafter referred to as “pump drive circuit”) 33 of the submersible pump 14 installed in the tank 10 and a control device 40 that controls the operation of the panel watering system 1 using these devices are provided.

  The control device 40 includes a CPU 41 that is an arithmetic device, a ROM 42 that stores the control program 42a of the panel watering system 1, a RAM 43 that functions as a work memory, and an elapsed time from the start of watering (hereinafter referred to as “watering time”). ), And an input / output circuit 45. The CPU 41, ROM 42, RAM 43, and timer circuit 44 are connected to an input / output circuit 45 via a bus line 46. The input / output circuit 45 is also connected to the operation panel 31, the temperature sensor 32, and the pump drive circuit 33. Yes.

  Further, the CPU 41 of the control device 40 reads the control program 42 a from the ROM 42 and executes it on the RAM 43. By execution of this control program 42a, the panel watering system 1 configured as described above performs watering operation for cooling the solar panel 2 (hereinafter referred to as “cooling operation”) or the surface 2A of the solar panel 2. Each process of watering operation (hereinafter referred to as “snow melting operation”) for melting snow is configured to be executed.

  In addition, when the temperature detected by the temperature sensor 32 is equal to or higher than a predetermined temperature (for example, 50 ° C. or 60 ° C.), or when the operation panel 31 is instructed to start the watering operation. In addition, a drive command for the submersible pump 14 is output to the pump drive circuit 33, thereby starting the drive of the submersible pump 14. On the other hand, the control device 40 starts time measurement by the timer circuit 44 from the start of driving of the submersible pump 14, that is, from the start of output of a drive command for the submersible pump 14.

  The watering operation performed when the temperature of the solar panel 2 is equal to or higher than the predetermined temperature is a cooling operation, and the watering operation started by the operation of the operation panel 31 is either a cooling operation or a snow melting operation. May be.

  When the watering operation is started in this way, the stored water (driving water) in the underground tank 10 is sucked by the submersible pump 14 and is pumped to the driving water port 5 </ b> A of the ejector 5 through the driving water pipe 13. In the ejector 5, the water injected into the drive water port 5 </ b> A is ejected at high speed from the nozzle port 51 </ b> A of the nozzle chamber 51 through the connection space 53 to the inlet of the diffuser chamber 52, and connected by an increase in the flow velocity due to the ejection from the nozzle port 51 </ b> A. The space 53 drops in pressure.

  At this time, if water is stored in the catchment basin 6, the water in the catchment basin 6 is sucked into the suction port 5 </ b> C of the ejector 5 through the suction pipe portion 4 a of the water delivery pipe 4 and is connected to the connection space 53. It mixes with the injection water flow from nozzle opening 51A. The mixed high-speed water stream is discharged from the discharge port 5 </ b> B of the ejector 5 while increasing the pressure while being decelerated by passing through the diffuser chamber 52. Discharged water from the ejector 5 is pumped to the sprinkling pipe 3 through the discharge pipe portion 4b of the water supply pipe 4, and sprinkled on the surface 2A of the solar panel 2 from the plurality of spray nozzles 3A.

  Thus, when water is sprinkled from the plurality of spray nozzles 3A, the water exchanges heat with the outside air until it passes through the air and reaches the surface 2A of the solar panel 2. For example, when the temperature of the water sprayed is higher than the outside air temperature, the water sprayed from the spray nozzle 3A is cooled by the outside air to enhance the cooling effect of the solar panel 2, while the water sprayed In the case where the temperature is lower than the outside air temperature, the snow melting effect that the water jetted from the jet nozzle 3A is warmed by the outside air is enhanced.

  The water sprayed on the surface 2A of the solar panel 2 flows down from the upper end to the lower end in the inclination direction of the solar panel 2, and flows into the water collecting basin 6 through the pores of the dust removal filter 11, It is collected by the water collecting tank 6. The water collected in the water collecting tank 6 is sent again to the water spray pipe 3 through the ejector 5 and the water pipe 4. As a result, a water circulation channel 12 is formed in which water sprinkled on the surface 2A of the solar panel 2 is collected by the water collecting trough 6 and returned to the sprinkling pipe 3.

  Such watering operation to the solar panel 2 is continued until the predetermined set watering time elapses from the start of the watering, and when the measurement time by the timer circuit 44 becomes equal to or longer than the predetermined watering time, the pump drive circuit 33. The output of the drive command to is stopped, and the drive of the submersible pump 14 is stopped. On the other hand, even when the measurement time by the timer circuit 44 is less than the predetermined set watering time, when the temperature detected by the temperature sensor 32 is lower than the set temperature, the output of the drive command to the pump drive circuit 33 is stopped. The driving of the submersible pump 14 is stopped.

  The set watering time is not limited to one type, for example. Two or more types of values are stored in the ROM 42 in advance, and a desired set watering time is appropriately selected by operating the operation panel 31. It may be configured.

  Incidentally, the amount of water pumped by the submersible pump 14 is, in principle, always constant from the start to the end of the watering operation in either the cooling operation or the snow melting operation. Note that the pumping amount of the submersible pump 14 is not necessarily the same between the cooling operation and the snow melting operation, and the pumping amount of the submersible pump 14 during the cooling operation is the same as the pumping amount of the submersible pump 14 during the snow melting operation. It may be more or less than the amount.

  In addition, in any of the watering operation of the cooling operation or the snow melting operation, if water for circulation is not stored in the water collecting trough 6 at the start of the operation, the suction of the water pipe 4 from the suction port 5C of the ejector 5 is performed. Outside air will be inhaled through the pipe part 4a. For this reason, the amount of water supplied from the ejector 5 to the sprinkling pipe 3 at the start of operation is reduced by the amount of water collected and circulated from the water collecting tank 6.

<About cooling operation>
Here, at the time of the cooling operation by the panel sprinkling system 1, the solar panel 2 is cooled by the heat of vaporization of water continuously sprinkled on the surface 2A, and the temperature drops. On the other hand, the water sprayed on the surface 2A of the solar panel 2 is heated by the heat of the solar panel 2 and rises in temperature, and the surface 2A is moved from the upper end side to the lower end side along the inclination of the solar panel 2. It becomes running water that flows toward.

  However, since the flowing water flowing on the surface 2A of the solar panel 2 is air-cooled by the outside air when the temperature is higher than the outside air, the amount of heat of the flowing water is radiated into the outside air, and the temperature rise is suppressed. .

  Moreover, the water sprayed on the surface 2A of the solar panel 2 flows down in the inclination direction of the solar panel 2 without staying at one place on the surface 2A of the solar panel 2. That is, the water that cools the solar panel 2 does not continue to stay in one place after the water spray and absorb heat from the solar panel 2, but instead of sunlight during a short period of time flowing down the surface 2A (slope) of the solar panel 2. Since it absorbs heat from the panel 2 and is quickly collected in the water collecting trough 6, the water temperature does not rise excessively due to heat absorption from the solar panel 2.

  Moreover, when the surface temperature of the solar panel 2 is high, the water sprayed absorbs the heat of vaporization by contact with the solar panel 2 and evaporates, and is dissipated in the outside air without being collected in the water collecting tank 6. Therefore, such high-temperature water is not collected and circulated in a large amount by the water collecting tank 6.

  For this reason, the water circulation flow path in which the water that has flowed down along the surface 2A of the solar panel 2 is collected by the water collecting member, is sent to the water spray pipe 3 by the ejector 5 and the water pipe 4, and is repeatedly reused. Even if 12 is used, sufficient cooling capacity for the solar panel 2 can be exhibited.

  Moreover, even if the water temperature is somewhat increased due to heat absorption from the solar panel 2, the water collected after watering is cooled by being mixed with the driving water supplied from the underground tank 10 in the ejector 5. The underground in which the underground tank 10 is buried is affected by various weather conditions such as the outside air temperature and the amount of sunlight, but it is necessary to cool the solar panel 2 especially in the summer, when the solar panel 2 is cooled. This is because the driving water, which is the stored water in the underground tank 10, has a lower temperature than the water that has absorbed heat from the solar panel 2 and the water temperature has risen because the temperature is lower than the temperature.

  Moreover, if the water collected after sprinkling continues to be circulated by the circulation flow path 12 via the ejector 5 and the water supply pipe 4, the temperature of the solar panel 2 is lowered, and the water is sprinkled from the sprinkling pipe 3. Since the temperature difference (temperature gradient) between the water and the surface 2A of the solar panel 2 is also gradually reduced, as a result, a decrease in cooling capacity due to an increase in the water temperature of the water collected after sprinkling is suppressed.

  Further, the water overflowing from the water collecting basin 6 flows down on the roof 71 and flows toward the eaves eaves 7, passes through the pores of the dust removal filter 11, flows into the eaves eaves 7, and is collected. The water collected by the eaves 7 flows into the rainwater collector 9 through the vertical gutter 8, is divided by the rainwater collector 9, and is discharged to the underground tank 10 through the rainwater collection pipe 21 or to the rainwater infiltration gutter 20 through the vertical gutter 8. Is done.

  Here, generally speaking, the situation where the solar panel 2 needs to be cooled means a non-rainfall time including the sunshine, so that a large amount of rainwater does not pass through the downpipe 8. Moreover, since most of the water collected by the catchment basin 6 is circulated for sprinkling, the water overflowing from the catchment basin 6 generally corresponds to the amount of water pumped by the submersible pump 14, or the vaporized evaporation content. Is added, it is less than the amount of water pumped by the submersible pump 14.

  For this reason, most of the water passing through the vertical rod 8 passes through the internal filter 9G of the rainwater collector 9 and is discharged to the underground tank 10 through the rainwater recovery pipe 21. Thereby, the stored water of the underground tank 10 used as the drive water of the ejector 5 can also be collect | recovered, and the watering operation of the panel watering system 1 can be continued, suppressing the usage-amount of tap water to the minimum.

  Moreover, since the water sent back to the underground tank 10 is limited to the overflow water from the water collecting tank 6, it is possible to prevent a large amount of water that has risen in temperature due to heat absorption from the solar panel 2 from flowing into the underground tank 10, As a result, it is possible to suppress a decrease in the cooling capacity of the watering operation associated with the temperature rise of the driving water.

<About snow melting operation>
On the other hand, in the snow melting operation by the panel water sprinkling system 1, the snow on the surface 2 </ b> A of the solar panel 2 is melted by the heat of fusion of water that is continuously sprinkled on the surface 2 </ b> A of the solar panel 2. It becomes. At this time, the water spray from each spray nozzle 3A of the water spray pipe 3 melts the surface layer portion of the snow and changes it into snow melt water, and this snow melt water mixes with the water sprinkled from the water spray pipe 3, It flows down to the surface 2A of the solar panel 2 while further melting the surrounding snow.

  And the water which reached | attained the solar panel 2 surface 2A further along the surface 2A of the solar panel 2, and along the inclination of the said solar panel 2 toward the lower end part from the upper end part of the solar panel 2 Go down. At this time, the water flowing on the surface 2A of the solar panel 2 increases while further melting the snow in the vicinity of the surface 2A of the solar panel 2 along with the flow, so When it reaches the lower end, it passes through the pores of the dust removal filter 11 and flows into the water collecting tank 6 and is collected.

  In this way, the snowmelt water is not melted by water spraying and then flows down along the snow, but does not stay in one place, but flows down along the slope of the solar panel 2 and on the downstream side in the flow direction. Since the snow accumulation in the vicinity of the surface 2A of a certain solar panel 2 is melted one after another, the snow melting effect of the solar panel 2 can be enhanced as compared with the case where water is sprayed on a plain surface.

  In this way, the snow melting by the panel watering system 1 is not only the water sprinkling from the water sprinkling pipe 3 and melting the snow by the heat of fusion, but also the water sprayed and the snow melting water are inclined on the surface 2A of the solar panel 2 The snow melting action is promoted by flowing down along the line and being promptly collected in the catchment 6. That is, the snow melting action is promoted by the water flowing on the solar panel 2 without staying in one place.

  For example, water sprayed in a snowy area on a flat ground stays in the same place, and as a result, the temperature of the sprinkled water is reduced, resulting in a decrease in the amount of heat of the sprinkled water, and over time The effect will be reduced. For this reason, it is necessary to continue supplying new water sprinkling one after another, which should make up for the lack of snow melting capacity, resulting in a large consumption of groundwater and tap water.

  On the other hand, in the panel watering system 1 of this embodiment, since the sprinkled water flows down along the inclination of the solar panel 2, water does not continue to remain on the solar panel 2, and the water collecting tank 6 is collected promptly, so that the temperature of the sprinkled water is prevented from excessively decreasing. In addition, since the temperature drop of the water collected by the catchment basin 6 is suppressed, when the collected water collected by the catchment basin 6 is sucked by the ejector 5 and circulated, A decrease in the amount of heat held is suppressed.

  Moreover, even if the temperature collected by the water collecting trough 6 after sprinkling and melting snow is somewhat lowered due to snow melting, the temperature of the water stored in the underground tank 10 is increased by being supplied and mixed as driving water. Although the underground tank 10 is buried in the ground, it is affected by various weather conditions such as the outside air temperature and the amount of sunlight, but snow (ice) in the winter season when snow melting is necessary, especially in winter. This is because the driving water, which is the stored water in the underground tank 10, has a higher temperature than the water whose temperature has decreased due to heat dissipation due to snow melting.

  Then, by continuing to circulate the water collected after sprinkling through the ejector 5, if the snow cover on the solar panel 2 decreases, the solar panel 2 itself receives sunlight and absorbs heat to generate a temperature. Since it rises, the water sprinkled by the temperature rise is also heated, and the temperature fall accompanying snow melting can be suppressed. Moreover, due to the temperature rise of the solar panel 2 itself, it is possible to supply heat of melting to the snow on it to promote melting of the snow.

  In addition, when water sprinkling containing snowmelt water is collected by the water collecting basin 6, the water that overflows beyond the capacity of the water collecting basin 6 flows down on the roof 71 and is collected by the eaves 7. The water collected by the eaves 7 flows into the rainwater collector 9 through the vertical gutter 8, is divided by the rainwater collector 9, and is discharged to the underground tank 10 through the rainwater collection pipe 21 or to the rainwater infiltration gutter 20 through the vertical gutter 8. Is done.

  Here, in general, when the snow melting by the solar panel 2 is necessary, it means not raining when rainwater promotes snow melting, but non-raining including sunlight when the solar panel 2 can be operated. A large amount of rainwater does not pass through the downpipe 8. For this reason, most of the water sprinkled with the snowmelt water passing through the vertical shaft 8 passes through the internal filter 9G of the rainwater collector 9 and is discharged to the underground tank 10 through the rainwater recovery pipe 21.

  At this time, since the water sent back to the underground tank 10 is limited to the overflow water from the water collecting trough 6, it is possible to prevent a large amount of water whose temperature has been lowered due to heat dissipation accompanying snow melting from flowing into the underground tank 10, and as a result. In addition, it is possible to suppress a decrease in snow melting ability in watering operation accompanying a decrease in temperature of driving water. Moreover, when there is a lot of snowmelt water and the capacity of the underground tank 10 is exceeded, it can be drained from the drain port 17 through the drain pipe 18 to the rainwater infiltration basin 20.

  The present invention has been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be easily made without departing from the spirit of the present invention. It can be guessed. For example, in the present embodiment, the underground buried underground tank 10 is described as a water storage tank. However, the embodiment of the water storage tank is not necessarily limited to this, and may be a ground-installed water storage facility. .

  Further, in the present embodiment, it has been described that the slope of the surface 2A of the solar panel 2 is equal to or higher than the slope of the roof 71. However, if the water after sprinkling can flow down, the surface 2A of the solar panel 2 The slope may be smaller than the slope of the roof 71.

  Moreover, in this embodiment, although the water collecting tub was provided separately from the eaves as a water collecting member according to the present invention, the eaves may be used as the water collecting member instead of the water collecting basin. In such a case, a bowl-shaped member that receives and collects excess water from the eaves can be provided below the eaves so that it functions as a second water collecting member, or the eaves can be increased in capacity. Thus, the second water collecting member may be unnecessary.

  Moreover, although the present Example demonstrated using the underground tank 10 as a water source which concerns on this invention, the specific example of this water source is not necessarily limited to this, For example, water supply equipment using a water supply or a groundwater source It may be.

1 Panel watering system (watering system for panel type equipment)
2 Solar power generation panel (panel type equipment)
2A surface (panel surface)
3 Sprinkling pipe 3A Injection nozzle 4 Water supply pipe 4a Suction pipe part (part of the suction part)
4b Discharge pipe part (part of the flow path for supplying water from the water source to the sprinkling pipe)
5 Ejector (Circulating flow generator)
5A Driving water port (part of speed increasing part)
5B Discharge port (part of discharge part)
5C inlet (part of inlet)
6 Catchment (collection material)
7 eaves (eave eaves, part of the second water collecting member, part of the return water flow path)
8 Downspout (downspout, part of water recovery path, part of water return channel)
9 Rainwater collector (part of water recovery channel, part of return channel)
10 Underground tank (an example of a water source)
12 Circulating channel 13 Drive water pipe (part of the channel for supplying water from the water source to the watering pipe)
14 Submersible pump (pressure feeding device)
21 Rainwater recovery pipe (part of water recovery path, part of return water flow path)
51 Nozzle chamber (part of speed increasing part)
52 Diffuser chamber (part of discharge section)
53 Connection space (part of mixing section)
54 Inhalation route (part of inhalation part)
70 Building 71 Roof

Claims (2)

In the sprinkling system for panel type equipment that sprays water on the panel type equipment having the panel surface inclined on the roof,
A water collecting member that is disposed on the lower end side in the inclination direction of the panel type device and receives and collects water that has flowed down the panel surface of the panel type device,
A watering pipe having watering holes for watering the panel surface of the panel type device,
A pumping device for pumping water supplied to the watering pipe from the water source toward the roof;
A part of a flow path for supplying water from the water source to the sprinkling pipe via the pressure feeding device, and when water pumped by the pressure feeding device passes, the water is sucked from the water collecting member and A circulating flow generator that mixes water sucked from a water collecting member and water pumped by the pumping device and discharges the mixed water into the sprinkling pipe;
A circulation flow path formed on the roof so that water circulates in the order of the water sprinkling pipe, the panel surface of the panel type device, and the water collecting member from the circulation flow generator through the circulation flow generator; A watering system for panel-type equipment, characterized by comprising: In the watering system for panel type | mold apparatuses of Claim 1,
A return flow path is provided for returning surplus water from the water collecting member forming a part of the circulation flow path to a water source;
A watering system for panel-type equipment, characterized in that the water source is a water tank installed in a place lower than the roof.

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