JP5522631B2 - Rain equipment - Google Patents

Description

  The present invention relates to a rain apparatus that artificially reproduces rain.

  A technique disclosed in Patent Literature 1 is known as a rain apparatus that artificially reproduces rain by dropping water droplets from above an object. The 1st rain apparatus disclosed by patent document 1 is equipped with a permeable dew condensation board, the some terminal extended toward the downward direction from the dew condensation board, and the water pipe which supplies water to the upper surface of a dew condensation board. Is. In the first rain device, the water supplied from the water distribution pipe penetrates the condensation board and is dropped as raindrops from the terminal. The amount of rainfall and the particle size of raindrops (rainfall particle size) are adjusted by adjusting the pressure of water supplied from the water pipe to the dew condensation panel.

  The second rain device disclosed in Patent Literature 1 includes a non-permeable dew condensation panel, a plurality of terminals extending downward from the dew condensation panel, water and air from below the dew condensation panel toward the dew condensation panel. And a water distribution pipe for spraying the mixed fluid. In the second rainfall device, condensation occurs on the lower surface of the condensation board, and the condensed water travels through the terminal and is dropped as raindrops from the terminal. The amount of rainfall is adjusted by adjusting the supply amount of the mixed fluid sprayed toward the dew condensation board and the mixing ratio of water and air. In addition, the rain particle size is adjusted by adjusting the temperature of the condensation panel.

Japanese Patent Laid-Open No. 11-138067

However, the above conventional techniques have the following problems.
(1) In the first rain apparatus disclosed in Patent Document 1, although it is possible to adjust the amount of rainfall and the particle size of the rain by adjusting the pressure of water supplied to the dew condensation board, the normal rain that continues to fall continuously In order to reproduce the amount of rainfall, it was necessary to adjust the pressure to a level as low as the micropump level. However, when the water pressure is so low, the flow rate is too small to allow dripping. The amount of rainfall that can be reproduced in this way was limited.
(2) Since the 2nd rain apparatus disclosed by patent document 1 sprays the mixed fluid of water and air from the lower part of a dew condensation board, it causes dew condensation on the lower surface of a dew condensation board, and drops raindrops. Raindrops fall in the direction in which the water pipe that sprays the mixed fluid is located. Therefore, the dripped raindrop absorbs moisture in the sprayed mixed fluid and reaches a large particle size before reaching the object. As a result, the amount and particle size of the raindrops immediately after the start of dropping differ from the raindrops falling on the object. Therefore, it has been extremely difficult to accurately adjust the amount of rainfall and the particle size of raindrops on the object.

  This invention solves the said conventional subject, and it aims at providing the rainfall apparatus which can reproduce various rainfall amounts and can adjust the rainfall amount and raindrop particle size with respect to a target object with sufficient precision.

In order to solve the above-described conventional problems, the rain apparatus of the present invention has the following configuration.
The rain apparatus according to claim 1 is a rain apparatus for dropping water droplets from above an object, wherein the surface condensing part is disposed above the object so as to face the object, and the dew condensation. A through-hole formed through the upper surface from the lower surface of the unit, a needle-like dripping unit suspended downward from the lower surface of the dew condensation unit, and a mist in which gas-liquid is mixed above the dew condensation unit And a spraying device for spraying and discharging the mist-like fluid.
With this configuration, the following effects can be obtained.
(1) When the atomized fluid is sprayed above the dew condensation part by the spray device, dew condensation occurs in the dew condensation part.
The generated condensation flows down to the bottom surface of the condensation part through the through hole. The condensed water that has flowed down to the lower surface of the dew condensation part is dripped through a dripping part that hangs downward from the lower surface of the dew condensation part, and raindrops are generated. Raindrops are generated from the lower surface of the dew condensation part, while mist-like fluid is sprayed above the dew condensation part.
As described above, raindrops are generated on the opposite side of the dew condensation portion where the mist-like fluid is sprayed, so that it is possible to prevent the dropped raindrops from absorbing moisture in the sprayed mist-like fluid. As a result, it is possible to adjust the amount of rainfall and the particle size of raindrops on the object by adjusting the amount and particle size of raindrops generated at the dropping portion. Since adjustment of the amount and particle size of raindrops generated in the dripping portion can be achieved by adjusting the amount of condensation generated in the dew condensation portion, it is possible to accurately adjust the amount of rainfall and the particle size of raindrops on the object.
(2) Condensation that occurs in the dew condensation part travels through the dripping part to form raindrops, and the amount of raindrops (rainfall) is adjusted by adjusting the amount of atomized fluid to be sprayed and the gas / liquid mixing ratio Is done. By adjusting the supply amount of the mist-like fluid and the mixing ratio of the gas and liquid, it is possible to easily reproduce various rainfalls ranging from rain to normal rain to heavy rains.

Here, as the dew condensation portion, a net, a punching metal, or a lattice made of a non-permeable material such as a synthetic resin or a metal is preferably used. This is because if it is non-permeable, the condensation that occurs when the sprayed mist fluid comes into contact can be obtained as raindrops without waste, and the adjustment accuracy of the rainfall amount and the rain particle size can be improved.
As the size of the dew condensation portion, one having a size of 0.1 mm to several mm , for example, is used in combination with one or more depending on the size of the object. It can also be changed according to the size of raindrops.
The through hole is formed from the upper surface to the lower surface of the dew condensation part. Condensation generated in the dew condensation part or the through hole by the through hole adheres to the dripping part suspended from the lower surface of the dew condensation part.
The size of the through hole is 0.5 to 7 mm, preferably 1 to 5 mm. Although it depends on the ambient temperature, water droplets are efficiently generated. In the case of fine raindrops such as drizzle, a through hole having a diameter of 0.1 to 0.5 mm is used. The gap between the through holes is formed to be 0.1 mm to 5 mm.
As the dropping part, one formed in a needle shape is used. The dripping part may be formed to have the same thickness from the base part to the front end in the longitudinal direction, or may be thinner toward the front end, but is preferably thinner toward the front end. It is because the dew condensation adhering to the dropping part is easily dropped. By reducing the pitch of the through-holes and dripping portions, the interval between raindrops can be reduced, and can be reproduced close to the actual rainfall state.
As the length of the dropping part, a length of 5 mm to 1000 mm is used. Moreover, as the diameter, a diameter of 0.1 mm to 5 mm is used. As a material, a material made of a metal such as stainless steel or a synthetic resin such as polyethylene is used. The interval between the dropping portions is formed larger than the target raindrop diameter. If it is smaller than the target raindrop diameter, the raindrops coalesce into large grains, which is not preferable. In addition, when it rains raindrops or large grains, it is better to narrow the interval between the dropping parts and combine the raindrops.
As a spraying device, a device that sprays a mist-like fluid in which gas and liquid (particularly water and air) are mixed at an arbitrary ratio is used. For example, a centrifugal spray type or an ultrasonic spray type sprayer or a humidifier is preferably used. As the mist-like fluid, supersaturated water vapor or mist-like water droplets are suitable. This is to make condensation easy to occur.
The spraying device is arranged at one or more places so as not to cause a density difference of the fluid in the supersaturated chamber according to the spray amount.

Invention of Claim 2 is the rain apparatus of Claim 1, Comprising: It has the upper surface and side which obstruct | occlude the upper part and side part of the supersaturation chamber which the said mist-like fluid sprays, and the lower part was open | released The dew condensation part is provided in the lower part of the case.
With this configuration, in addition to the operation obtained in the first aspect, the following operation can be obtained.
(1) The diffusion of the mist-like fluid in the housing can be stabilized by the housing having the lower part opened. As a result, dew condensation can be uniformly generated in the dew condensation part, and the amount of dew condensation generated can be accurately adjusted.

  Here, as the housing, any shape such as a prismatic shape with a flat upper surface and side surfaces, a cylindrical shape with a flat upper surface and curved side surfaces, and a dome shape with curved upper surfaces and side surfaces can be adopted.

A third aspect of the present invention is the rain apparatus according to the first or second aspect, wherein the dew condensation portion has a configuration formed in a mesh shape or a lattice shape.
With this configuration, in addition to the operation obtained in the first or second aspect, the following operation can be obtained.
(1) By forming the dew condensation part in a mesh shape, the ratio of the area of the mesh (through hole) to the area of the dew condensation part can be increased. As a result, the condensation generated in the dew condensation part passes through the through-hole and easily adheres to the dripping part, and raindrops are easily generated.
(2) The condensation part can be reduced in weight by forming the condensation part in a mesh shape or a lattice shape, and thus the rainfall device can be reduced in weight.

  Here, as a dew condensation portion such as a mesh shape, it is only necessary that the mesh is formed continuously, and the mesh structure is a two-dimensional network structure in which the two-dimensional mesh is connected, and a network in which the three-dimensional mesh is connected 3. Any of a dimensional network structure may be used. The shape of the mesh or the like is not particularly limited, and a square shape, a rectangular shape, a hexagonal shape, or the like can be appropriately selected. For example, a commercially available cat protection mat [cat cut or thorn net] or the like can be used.

Invention of Claim 4 is the rain apparatus of any one of Claim 1 thru | or 3, Comprising: The said dripping part has the structure suspended from the mesh | network of the said dew condensation part, or the node part of a grating | lattice. ing.
With this configuration, in addition to the operation obtained in any one of claims 1 to 3, the following operation is obtained.
(1) Since a plurality of meshes are gathered at the node part, the condensation generated at the condensation part is collected at the node part. Thereby, condensation can be collected in the dropping part and raindrops can be made efficiently.

A fifth aspect of the present invention is the rain apparatus according to any one of the first to fourth aspects, comprising a temperature adjustment device for adjusting the temperature of the dew condensation portion.
With this configuration, in addition to the action obtained in any one of claims 1 to 4, the following action is obtained.
(1) The temperature of the dew condensation part can be adjusted by the temperature adjusting device, and a predetermined temperature difference can be made between the temperature of the dew condensation part and the temperature of the mist-like fluid. Since the particle size of the condensation generated in the condensation part can be adjusted by the temperature difference, the function of adjusting the raindrop particle size can be improved.
In addition, as a temperature control device, a device that directly adjusts the temperature of the dew condensation part using the electrical resistance of the dew condensation part, a device that adjusts the temperature of the dew condensation part by contacting the dew condensation part, a dew condensation part via the space It is possible to use any one that adjusts the temperature.

A sixth aspect of the present invention is the rain apparatus according to any one of the first to fifth aspects, comprising a buffer member disposed under the dew condensation portion.
With this configuration, in addition to the action obtained in any one of claims 1 to 5, the following action is obtained.
(1) The raindrops that have passed through the gaps between the cushioning members are caused to fall on the subject by the cushioning members disposed above the subject, so that the raindrops can be dispersed and approached to natural rainfall.

  Here, the buffer member is laid on an object such as crushed stone, gravel, brick scrap, glass scrap, shell scrap, pottery scrap, or a ball of synthetic resin, or is suspended in a dew condensation section. Thus, a member in which continuous voids are formed between the particles can be used. Further, a sheet-like member in which continuous voids are formed, such as a mesh (network body), a nonwoven fabric, or the like, can also be used. It is also possible to use a plurality of these sheet-like members.

According to invention of Claim 1, it has the following effects.
(1) It is possible to prevent the raindrops that have dripped moisture in the sprayed mist fluid from being absorbed, and to adjust the amount and particle size of the raindrops generated at the dripping portion by adjusting the amount of condensation that occurs at the condensing portion In addition, it is possible to provide a rain apparatus capable of accurately adjusting the amount of rainfall and the particle size of raindrops on an object.
(2) By adjusting the supply amount of the mist-like fluid and the mixing ratio of the gas and liquid, it is possible to provide a rain apparatus that can easily reproduce various rainfall amounts from a normal rain level that continuously falls to heavy rain.

According to invention of Claim 2, in addition to the effect of Claim 1,
(1) Since the atmosphere of the mist-like fluid can be stabilized in the housing, it is possible to provide a rain apparatus that can uniformly cause condensation in the condensation part and can adjust the amount of condensation that occurs with high precision.

According to invention of Claim 3, in addition to the effect of Claim 1 or 2,
(1) It is possible to provide a rainfall device in which condensation generated in the dew condensation part passes through the through hole (mesh) and is easily attached to the dripping part, and raindrops are easily generated.
(2) A dew condensation part can be reduced in weight and a lightweight rain apparatus can be provided.

According to invention of Claim 4, in addition to the effect of Claim 3,
(1) Since the condensation that has occurred in the dew condensation part is likely to collect in the node part, it is possible to provide a rain apparatus that collects dew condensation in the dripping part and can efficiently produce raindrops.

According to invention of Claim 5, in addition to the effect of any one of Claims 1 to 4,
(1) Since the temperature of the dew condensation part is adjusted by the temperature control device and the temperature difference between the temperature of the dew condensation part and the temperature of the mist-like fluid can be adjusted, the particle size of the dew condensation occurring in the dew condensation part can be adjusted. It is possible to provide a rain apparatus capable of improving the diameter adjustment function.

According to invention of Claim 6, in addition to the effect of any one of Claims 1 to 5,
(1) It is possible to provide a rainfall device that can drop raindrops that have passed through the gap by the buffer member onto an object and can disperse the raindrops to prevent the raindrops from being fixed.

It is a schematic diagram which shows typically the rainfall apparatus in Embodiment 1. FIG. It is a schematic diagram which expands and shows typically the principal part of a dew condensation part. It is a schematic diagram which shows typically the rain apparatus in Embodiment 2. FIG. It is a schematic diagram which expands and shows typically the principal part of a dew condensation part.

(Embodiment 1)
Hereinafter, the rain apparatus 1 in Embodiment 1 of this invention is demonstrated, referring drawings. FIG. 1 is a schematic diagram schematically showing a rain apparatus 1 in the first embodiment.
In FIG. 1, reference numeral 1 denotes a rain apparatus that is covered by the earth tub 100, 101 is an object such as soil accommodated in the earth tub 100, and 102 is a buffer member laid on the upper surface of the object 101. The buffer member 102 is made of particles such as crushed stone, gravel, brick waste, glass waste, shell waste, and ceramic waste, and is laid on the object 101 to form voids between the particles.
In this embodiment, beans gravel having a particle size of 5 to 10 mm is used with a layer thickness of 50 mm.

  2 is covered with the earth tank 100, and the upper and side portions are closed at the upper and side surfaces and the lower portion is opened, and the lower portion is opened, 3 is a water supply tank in which water is stored, and 4 is the water supply tank 3 A water supply pipe 5 connected to the lower part is mixed with water supplied from the water supply pipe 4 with air to form a mist-like fluid, and the spray pipe 6 penetrating through the side surface of the housing 2 enters the housing 2. A spraying device comprising a humidifier for spraying, 7 is a sheet-like dew condensation part formed of a mesh body made of a synthetic resin and disposed at the lower part of the open housing 2 so as to face the object 101, 8 is dew condensation It is a needle-like dripping part having a length of 20 mm that hangs downward from the lower surface of the part 7 (in the direction of the object 101). In the present embodiment, the dew condensation portion 7 is formed in a mesh shape, and a commercially available “cat-repellent mat” in which needle-like protrusions are integrally formed at the node portion is used. Further, the dew condensation part 7 is detachably supported by a support member (not shown) inside the lower part of the housing 2.

Next, the dew condensation part 7 and the dripping part 8 will be described in detail with reference to FIG. FIG. 2 is a schematic diagram schematically showing an enlarged main part of the dew condensation part 7.
In FIG. 2, 7a is a node part where the meshes of the mesh-shaped dew condensation part 7 gather, and a dripping part 8 formed in a needle shape is suspended from the node part 7a. Reference numeral 7 b denotes a through hole formed so as to penetrate from the upper surface to the lower surface of the dew condensation part 7.

  In the rain apparatus 1 according to Embodiment 1 configured as described above, the water stored in the water supply tank 3 is supplied to the spraying apparatus 5 through the water supply pipe 4. In the spraying device 5, the supplied water is mixed with air to form a mist-like fluid, and sprayed from the spray tube 6 into the housing 2. Since the upper part and the side part of the housing 2 are closed, a supersaturated water vapor atmosphere is formed. Since the lower part of the housing 2 is opened, and the mesh-shaped dew condensation part 7 is disposed there, the water vapor contacting the dew condensation part 7 causes dew condensation, and the dew condensation adheres to the dripping part 8 through the through hole 7b. Condensation adhering to the dropping unit 8 falls toward the object 101 due to gravity and becomes raindrops. The raindrops first collide with the buffer member 102 and are dispersed, flow down the gap formed in the buffer member 102, and are poured as raindrops (water droplets) onto the object 101.

According to the rain apparatus 1 in Embodiment 1 comprised as mentioned above, the following effects | actions are acquired.
(1) When the atomized fluid is sprayed above the dew condensation part 7 by the spray device 5, dew condensation occurs in the dew condensation part 7. Condensation generated in the dew condensation part 7 flows down to the lower surface of the dew condensation part 7 through the through hole 7b. Condensed water that has flowed down to the lower surface of the dew condensation part 7 is dripped through a dripping part 8 that hangs downward from the lower surface of the dew condensation part 7 to generate raindrops. The mist-like fluid is sprayed above the dew condensation part 7 and raindrops are formed on the lower surface on the opposite side. Absorption can be prevented. As a result, by adjusting the amount and particle size of raindrops generated at the dropping unit 8, the amount of rainfall and the particle size of raindrops on the object 101 can be adjusted. Since the amount and particle size of raindrops generated at the dropping unit 8 can be adjusted by adjusting the amount of condensation generated at the condensation unit 7, the amount of rainfall and the particle size of raindrops on the object 101 can be adjusted with high accuracy.
(2) Condensation generated in the dew condensation unit 7 travels along the dripping unit 8 to form raindrops, and the amount of raindrops (rainfall amount) depends on the amount of mist-like fluid supplied by the spray device 5 and the gas-liquid mixing ratio. It is adjusted by adjusting. By adjusting the amount of mist-like fluid supplied and the gas-liquid mixing ratio, it is possible to easily reproduce various amounts of rainfall ranging from drizzle and continuous rain that falls continuously to heavy rain.

(3) The atmosphere of the mist-like fluid in the housing | casing 2 can be stabilized by the housing | casing 2 by which the lower part was open | released. As a result, dew condensation can be uniformly generated in the dew condensation part 7, and the amount of dew condensation that occurs can be adjusted with high accuracy.
(4) By forming the dew condensation part 7 in a mesh shape, the ratio of the area of the mesh (through hole 7b) to the area of the dew condensation part 7 can be increased. As a result, the condensation generated in the dew condensation part 7 easily passes through the through hole 7b and adheres to the dripping part 8, and raindrops are easily generated.
(5) By forming the dew condensation part 7 in a mesh shape, the dew condensation part 7 can be reduced in weight, and as a result, the rain apparatus 1 can be reduced in weight.
(6) By forming the dew condensation part 7 in a mesh shape, the ratio of the area of the mesh (through hole 7b) to the area of the dew condensation part 7 can be increased. As a result, the mesh (through hole 7b) is not easily clogged, and rain can be evenly generated from the entire dripping portion 8.

(7) Since a plurality of meshes are gathered at the node portion 7a, the condensation generated at the condensation portion 7 is collected at the node portion 7a. Since the dropping part 8 is suspended from the node part 7a, condensation can be collected in the dropping part 8 and raindrops can be made efficiently.
(8) Raindrops that have passed through the gaps of the buffer member 102 disposed above the object 101 can flow down to the object 101, and the raindrops can be prevented from being dispersed and becoming large.

(Embodiment 2)
Next, Embodiment 2 will be described with reference to FIG. FIG. 3 is a schematic diagram schematically showing the rainfall apparatus 11 according to the second embodiment. In order to simplify the drawing, the illustration of the earth tub 100, the object 101, and the buffer member 102 described in Embodiment 1 is omitted. Further, the same parts as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted.
In FIG. 3, reference numeral 11 denotes a rainfall device according to the second embodiment, 12 denotes a temperature adjustment device that adjusts the temperature, and 13 denotes a heat transfer unit in which the temperature is adjusted by the temperature adjustment device 12. Since the heat transfer unit 13 is in contact with the condensation unit 17, the temperature of the condensation unit 17 is adjusted by the heat conduction of the heat transfer unit 13 and the condensation unit 17 by adjusting the temperature of the heat transfer unit 13. Reference numeral 17 denotes a sheet-shaped dew condensation portion disposed at the lower portion of the opened housing 2 by a support member (not shown). When the temperature adjustment device 12 is provided, it is preferably made of metal from the viewpoint of heat conduction. . Reference numeral 17 c denotes a needle-shaped dew condensation assisting portion that is erected at a plurality of locations on the upper surface of the dew condensation portion 17, and 18 is a needle-shaped dripping portion that is suspended from the lower surface of the condensation portion 17. In the present embodiment, the dew condensation part 17 is formed in a mesh shape.

Next, with reference to FIG. 4, the condensation part 17 and the dripping part 18 are explained in full detail. FIG. 4 is a schematic diagram schematically showing an enlarged main part of the dew condensation part 17.
In FIG. 4, reference numeral 17 a denotes a node where the mesh of the mesh-shaped dew condensation part 17 gathers, and a dew condensation assisting part 17 c is erected upward from the node part 17 a (upward in FIG. 4) and downward from the node part 17 a ( A drip portion 18 is suspended in the downward direction in FIG. Reference numeral 17 b denotes a through hole formed so as to penetrate from the upper surface to the lower surface of the dew condensation part 17.

According to the rain apparatus 11 in the second embodiment configured as described above, the following actions are obtained in addition to the actions obtained in the first embodiment.
(1) The temperature of the heat transfer unit 13 is adjusted by the temperature adjusting device 12, and the temperature of the dew condensation unit 17 is adjusted accordingly. As a result, a predetermined temperature difference can be made between the temperature of the dew condensation part 17 and the temperature of the mist-like fluid. Since the particle size of the condensation generated in the condensation part 17 can be adjusted by the temperature difference, the function of adjusting the raindrop particle size can be improved.
(2) The dew condensation assisting part 17c erected on the upper surface of the dew condensation part 17 can increase the surface area where the mist-like fluid comes into contact and the dew condensation occurs. Therefore, the dew condensation can be efficiently generated from the mist-like fluid. .
(3) Since the dew condensation assisting part 17c is erected upward from the node part 17a and the dropping part 18 is suspended downward from the node part 17a, the dew condensation generated in the dew condensation assisting part 17c 18 can be easily dropped.

Hereinafter, the present invention will be specifically described by way of examples. The present invention is not limited to these examples. In the following examples, the rainfall apparatus in the first embodiment is applied.
As a spraying device, a rain device was obtained using two commercially available humidifiers. In addition, the capacity | capacitance per unit of the used humidifier was able to spray about 1000 mL of water over 5 to 6 hours. By spraying water into the housing from a humidifier (a spraying device), condensation was generated in the dew condensation part to obtain rain. By operating the humidifier (a spraying device) for 14 hours continuously for one day, about 5 to 8 mm / day of rainfall per 1 m ² of the object was obtained. This is a reproduction of normal rain conditions.

Here, when the rainfall amount of about 5 mm / day per 1 m 2 of the object is converted, it is 5 L / day, that is, 3.5 mL / min. This is a small micropump level flow. Even if it is attempted to discharge water as raindrops using a thin tube, the flow rate of 3.5 mL / min is too small to be discharged.
Generally, the minimum amount of raindrops discharged from a thin tube is about 500 mL / day per thin tube.
If narrow tubes are arranged in a 1 m ² plane at a pitch of 5 cm, 400 narrow tubes are arranged. Considering the minimum amount of raindrops discharged from the narrow tubes, the rainfall amount greatly exceeds 5 L / day. As described above, it was difficult to reproduce the rainfall amount (normal rainfall) of about 5 mm / day per 1 m 2 of the object.
Thus, in the past, since it was not possible to continuously rain for a few hours with a small amount of rain, for example, in order to achieve a rainfall of 5 L / day , water droplets of 5 L in a shower form on the object for 10 minutes every day. Was dropped intermittently over the object.
On the other hand, according to the present invention, it was possible to realize a rainfall amount of about 5 mm / day per 1 m ^{2 of} the object with the extremely simple configuration as described above. Furthermore, by using a spraying device with a large spraying capacity or increasing the number of spraying devices, the amount of rainfall can be increased and heavy rain can be reproduced.
A small amount of rainfall can be reproduced, and by adjusting the number of humidifiers, humidifying capacity, and time, it is possible to sufficiently rain a few tens of millimeters equivalent to heavy rain.
The uniformity of raindrop distribution is extremely high.
The rainfall is stable.
Since humidifiers, nets, etc. can be used, they can be manufactured at a cost that is less than one-quarter compared to conventional rainfall devices.
Although the mitigation layer is not particularly necessary, by providing this layer, the same phenomenon as natural rainfall can be reproduced for the soil. Further, in the case of rainfall into the space, the number of raindrops can be made denser by inserting a mesh-like sheet that is smaller than the needle-like mesh.
Also, by providing this layer, it is possible to prevent the occurrence of raindrop holes on the soil surface due to the raindrops falling.

Although the present invention has been described based on the embodiments, the present invention is not limited to the above embodiments.
In the above-described embodiment, the case where raindrops are dripped from the dripping portions 8 and 18 by natural dripping due to gravity has been described. It is also possible. Examples of the vibrations of the dew condensation units 7 and 17 include horizontal vibration, vertical vibration, shaft vibration, vibrator vibration, and the like. The horizontal excitation is to reciprocate the dew condensation parts 7 and 17 in the horizontal direction. The vertical vibration is to reciprocate the dew condensation parts 7 and 17 in the vertical direction. Axial vibration is to reciprocate the dew condensation portions 7 and 17 having a rotation shaft at the center by rotating the condensation portions 7 and 17 about the rotation shaft. Vibrator excitation gives vibrations of the vibrator to the dew condensation parts 7 and 17. By causing the dew condensation parts 7 and 17 to vibrate, it is possible to obtain raindrops having a particle size smaller than the particle size of the raindrops that naturally drop by gravity.
Although the description has been omitted in the above embodiment, it is possible to make the rain angle with respect to the object 101 variable by providing a blower below the dropping portions 8 and 18 and changing the wind speed from the blower applied to the rain. Is possible.

In the above-described embodiment, the case where particles such as gravel are laid as the buffer member 102 has been described. It is.
In the above embodiment, the case where the temperature adjusting device 12 adjusts the temperature of the dew condensation units 7 and 17 by heat conduction from the heat transfer unit 13 has been described, but the present invention is not necessarily limited thereto. It is also possible to adjust the temperature of the dew condensation units 7 and 17 with the cold air or the hot air generated from the temperature adjusting device 12 so that the temperature adjusting device 12 generates the cold air or the hot air. In this case, compared with the case where the temperature of the dew condensation parts 7 and 17 is adjusted by heat conduction from the heat transfer part 13, the temperature of the dew condensation parts 7 and 17 can be adjusted evenly. It can be improved.
Although not described in the above embodiment, the pH of the rain can be adjusted by adjusting the pH of the water stored in the water supply tank 3.

  The present invention relates to a rain apparatus that artificially reproduces rainfall, and can provide a rain apparatus that can reproduce various rainfall amounts and can accurately adjust the rainfall amount and raindrop particle size on an object.

DESCRIPTION OF SYMBOLS 1,11 Rainfall device 2 Housing | casing 3 Water supply tank 4 Water supply pipe 5 Spraying device 6 Spraying tube 7, 17 Condensation part 7a, 17a Node part 7b, 17b Through-hole 17c Condensation auxiliary part 8, 18 Dripping part 12 Temperature control apparatus 13 Transmission Heating part 100 Earth tank 101 Object 102 Buffer member

Claims (6)

A rain apparatus for dropping water droplets from above an object,
A planar dew condensation portion disposed above the object facing the object;
A through hole formed so as to penetrate from the upper surface to the lower surface of the dew condensation part;
A needle-like dripping part that hangs downward from the lower surface of the dew condensation part;
And a spraying device for spraying a mist-like fluid mixed with gas and liquid above the dew condensation part. A housing having an upper surface and a side surface closing the upper portion and the side portion, and having a lower portion opened;
The rain apparatus according to claim 1, wherein the dew condensation part is disposed in a lower part of the casing.   The rain apparatus according to claim 1, wherein the dew condensation part is formed in a mesh shape or a lattice shape.   The raining device according to any one of claims 1 to 3, wherein the dripping portion is suspended from a mesh of the dew condensation portion or a node portion of the lattice.   The rain apparatus according to any one of claims 1 to 4, further comprising a temperature adjusting device that adjusts a temperature of the dew condensation portion. The rain apparatus according to any one of claims 1 to 5, further comprising a buffer member disposed under the dew condensation portion.

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