KR20160136653A - A Eco-friendly System for Culturing Plant - Google Patents

Abstract

The present invention relates to an environmentally-friendly plant cultivation system, and more specifically, to an environmentally-friendly plant cultivation system capable of smoothly operating a plant cultivation system using sunlight and ground heat, comprising: an illumination device which provides illumination required for plant growth; and a temperature control device which controls the temperature of a plant cultivation space, wherein the illumination device includes a light-collecting unit which collects sunlight, a light-conveying unit which conveys the sunlight collected by the light-collecting unit to the plant cultivation space, a lighting unit which emits the sunlight conveyed by the light-conveying unit into the plant cultivation space, and a cooling unit which cools the lighting unit. The lighting unit includes an LED light and thus can supplement the illumination provided by sunlight. The cooling unit includes an air cooling means in the proximity of the LED light which enables circulation of outside air, and thereby allows heat to be exchanged between an air cooling unit and the LED light, which consequently prevents the LED light from overheating when the LED light is in continuous use in prolonged cloudy weather during the rainy season and ultimately prevents malfunctions and the occurrence of fire in the lighting unit. The temperature control device includes both an indirect ventilation unit which ventilates by means of ground source heat exchange and a direct ventilation unit which brings atmospheric air directly into the plant cultivation space. Therefore, by supplying the atmospheric air whose temperature is maintained constant directly into the plant cultivation space, the temperature control device can have improved efficiency and reduce the power required for the indirect ventilation unit and heat loss.

Description

An Eco-friendly System for Culturing Plant

The present invention relates to an environmentally friendly plant cultivation system, and more particularly, to an environmentally friendly plant cultivation system that includes a roughness providing device for providing roughness required for plant growth and a temperature adjusting device for adjusting the temperature of a plant cultivation space, An optical transmission unit for transmitting sunlight condensed by the light collecting unit to the plant growing space, an illuminating unit for emitting the sunlight transmitted by the optical transmission unit to the plant growing space, a cooling unit for cooling the illumination unit, And the cooling unit includes air cooling means for allowing external air to circulate adjacent to the LED illumination. The cooling unit includes an air cooling unit and an LED illumination unit, So that even in the rainy season where the cloudy day continues, even in the continuous use of the LED illumination, And the temperature control device is provided with an indirect blowing part for blowing air using underground heat exchange and a direct blowing part for directly sending the underground air into the plant growing space By simultaneously supplying the underground air, which maintains the constant temperature, to the plant growing space, it is possible to reduce the power and heat loss consumed in the indirect blowing part and to increase the efficiency of the temperature adjusting device. And an environmentally friendly plant cultivation system for allowing a system to operate smoothly.

In recent years, in order to produce plants, crops, etc. stably throughout the year regardless of the season, environmental conditions such as light, temperature, humidity, carbon dioxide concentration, and culture liquid are artificially controlled within a certain facility and continuously produced automatically Facility is increasing, and it is called so-called plant factory.

Such plant factories are required to use energy for providing artificial light source, temperature and humidity control, and various types of energy sources are used for this purpose.

Generally, energy sources used are fossil fuels such as coal, petroleum, and natural gas. However, these fossil fuels pollute the environment due to various pollutants generated in the combustion process. In addition to the disadvantages of generating harmful substances such as radioactivity, the development of renewable energy that can replace these energy sources due to the limit of reserves has been actively carried out in recent years. Renewable energy can be obtained endlessly from nature such as wind, solar, geothermal, and air, and it can also be obtained from wastewater that has been thrown from the factory.

Accordingly, in plant plant systems for plant cultivation, natural light is provided by using an illumination device using solar light as in the following patent documents, or temperature can be controlled by using geothermal heat. However, when the sunlight is used to maintain a constant illuminance in the plant, it is not possible to obtain a sufficient illuminance in the case of a rainy season or the like because a cloudy day in which the incident amount of sunlight is insufficient is continued, So that the illuminance can be maintained. However, if the cloudy day continues, the LED light must be continuously used, and the heat generated by the LED light is very serious. If the invention continues, the lighting device such as the LED easily breaks down.

In addition, a variety of devices for cooling and heating using geothermal heat have been developed and applied. However, due to problems such as heat loss, they do not show better efficiency than temperature control through other energy sources.

(Patent Literature)

Korean Registered Patent No. 10-1047445 (registered on July 07, 2011) "Solar light assembly"

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

The present invention provides an illuminance providing apparatus for illuminating a plant, the illuminance providing apparatus comprising: a light collecting unit for collecting sunlight; an optical transmission unit for transmitting sunlight condensed by the light collecting unit to a plant growing space; A lighting unit for emitting sunlight transmitted by the optical transmission unit to a plant growing space, and a cooling unit for cooling the lighting unit, wherein the lighting unit includes LED illumination to make up for illuminance by sunlight, And an air cooling means for circulating the outside air adjacent to the LED illumination so that heat exchange between the air cooling portion and the LED illumination is enabled so that the overheating of the LED illumination is suppressed even in the continuous use of the LED illumination in the rainy season, The present invention also provides an eco-friendly plant cultivation system for preventing a failure of a lighting unit All.

The air cooling unit includes an inflow pipe into which air flows from the outside, a heat exchange pipe which is communicated with the inflow pipe and formed around or inside the light pipe, a heat exchange pipe An environmentally friendly plant cultivation system that enables natural heat exchange with outside air, including an outflow pipe that communicates with the outflow of air to the outside, thereby preventing overheating of the illumination unit including the LED illumination without using any additional power And the like.

The present invention includes a temperature control device for controlling the temperature of a plant cultivation space, wherein the temperature control device includes an indirect blowing part for blowing air using underground heat exchange and a direct blowing part for directing the underground air directly into the plant growing space It is an object of the present invention to provide an eco-friendly plant cultivation system capable of increasing the efficiency of the temperature control device by reducing the power consumed in the indirectly blown part by directly supplying the underground air maintaining the constant temperature to the plant cultivation space.

The present invention includes a temperature control device having an underground pipe embedded in the ground and having a plurality of through holes formed along the circumferential surface so that underground air or ground water can be introduced, And the indirect blowing portion is inserted into the underground pipe to circulate the fluid that absorbs and transfers energy from the air or water in the underground pipe, and a second heat exchange loop in which the fluid circulating through the first heat exchange loop is heat- And a heat pump for enabling the supply of cold air or warm air to the inside of the plant cultivation space, so that the underground air can be supplied through the direct air blowing portion and heat exchange with the indirect blowing portion by one underground pipe And maintenance and management, and the installation area can be reduced. Also, groundwater and underground air can be introduced through the through holes It aims to provide an environmentally friendly plant cultivation system that can by increasing the heat exchange efficiency.

The present invention relates to an air duct which is connected to an underground pipe and is inserted into the inside of the plant cultivation space and a direct air blower installed in the air duct and including a blower for transferring the underground air into the plant growing space, And a plurality of air outlets formed to penetrate through the underground air, so that the underground air can be uniformly introduced into the plant growing space, thereby efficiently performing heat exchange through the underground air.

In order to achieve the above object, the present invention is implemented by the following embodiments.

According to an embodiment of the present invention, an eco-friendly plant cultivation system according to the present invention includes an illuminance providing device for providing illuminance necessary for growing a plant, wherein the illuminance providing device includes a light collecting part for condensing sunlight, And a cooling unit for cooling the illuminating unit, wherein the illuminating unit includes a light transmitting unit for transmitting the sunlight condensed by the light unit to the plant growing space, a lighting unit for emitting sunlight transmitted by the optical transmitting unit to the plant growing space, And the cooling unit includes air cooling means for allowing external air to circulate adjacent to the LED illumination so that overheating due to the use of the LED illumination can be suppressed So that it is possible to prevent the problem.

According to another embodiment of the present invention, in the eco-friendly plant cultivation system according to the present invention, the illumination unit includes a light pipe for emitting sunlight, and the air cooling means includes an inflow pipe into which air flows from the outside, A heat exchanger tube communicating with the tube and formed around or inside the light pipe; and an outlet tube communicating with the heat exchanger tube and allowing air to flow out to the outside.

According to another embodiment of the present invention, an eco-friendly plant cultivation system according to the present invention includes a temperature control device for controlling the temperature of a plant cultivation space, and the temperature control device includes an indirect convection fan And a direct air blower for directly transmitting the underground air into the plant growing space.

According to another embodiment of the present invention, in the eco-friendly plant cultivation system according to the present invention, the temperature control device is embedded in the ground, and a plurality of through holes are formed along the circumferential surface, Wherein the direct blowing unit directs the air in the underground pipe to be transferred into the plant growing space, and the indirect blowing unit is inserted into the underground pipe to absorb energy from the air or water in the underground pipe And a heat pump for performing heat exchange with the fluid circulating through the first heat exchange loop to enable supply of cool air or warm air into the plant growing space .

According to another embodiment of the present invention, in the eco-friendly plant cultivation system according to the present invention, the direct air blowing unit includes an air duct communicating with the underground pipe and inserted into the plant cultivation space, And a blower for transferring the underground air into the plant growing space, wherein the air duct includes a plurality of air outlets formed to pass through the perimeter.

The present invention can obtain the following effects by the above-described embodiment, the constitution described below, the combination, and the use relationship.

The present invention provides an illuminance providing apparatus for illuminating a plant, the illuminance providing apparatus comprising: a light collecting unit for collecting sunlight; an optical transmission unit for transmitting sunlight condensed by the light collecting unit to a plant growing space; A lighting unit for emitting sunlight transmitted by the optical transmission unit to a plant growing space, and a cooling unit for cooling the lighting unit, wherein the lighting unit includes LED illumination to make up for illuminance by sunlight, And an air cooling means for circulating the outside air adjacent to the LED illumination so that heat exchange between the air cooling portion and the LED illumination is enabled so that the overheating of the LED illumination is suppressed even in the continuous use of the LED illumination in the rainy season, So that it is possible to prevent the failure of the illumination unit.

The air cooling unit includes an inflow pipe into which air flows from the outside, a heat exchange pipe which is communicated with the inflow pipe and formed around or inside the light pipe, a heat exchange pipe It is possible to prevent the overheating of the illumination unit including the LED illumination without using any additional power by making it possible to perform natural heat exchange with the outside air including the outflow pipe which communicates and the air flows out.

The present invention includes a temperature control device for controlling the temperature of a plant cultivation space, wherein the temperature control device includes an indirect blowing part for blowing air using underground heat exchange and a direct blowing part for directing the underground air directly into the plant growing space By supplying the underground air maintaining the constant temperature directly to the plant cultivation space, it is possible to reduce the power consumed in the indirectly blown part, thereby improving the efficiency of the temperature control device.

The present invention includes a temperature control device having an underground pipe embedded in the ground and having a plurality of through holes formed along the circumferential surface so that underground air or ground water can be introduced, And the indirect blowing portion is inserted into the underground pipe to circulate the fluid that absorbs and transfers energy from the air or water in the underground pipe, and a second heat exchange loop in which the fluid circulating through the first heat exchange loop is heat- And a heat pump for enabling the supply of cold air or warm air to the inside of the plant cultivation space, so that the underground air can be supplied through the direct air blowing portion and heat exchange with the indirect blowing portion by one underground pipe And maintenance and management, and the installation area can be reduced. Also, groundwater and underground air can be introduced through the through holes There is an effect that allows to increase by the heat exchange efficiency.

The present invention relates to an air duct which is connected to an underground pipe and is inserted into the inside of the plant cultivation space and a direct air blower installed in the air duct and including a blower for transferring the underground air into the plant growing space, And a plurality of air outlets formed so as to penetrate through the underground air, so that the underground air can be uniformly introduced into the plant growing space, so that heat exchange through the underground air can be efficiently performed.

1 is a schematic view of an eco-friendly plant cultivation system according to an embodiment of the present invention
Fig. 2 is a cross-sectional view taken along line AA of Fig. 1
3 is a block diagram showing a configuration of a control unit of an environmentally friendly plant cultivation system according to an embodiment of the present invention
4 is a reference view showing a configuration of the heat pump of FIG.
Fig. 5 is a diagram showing the configuration of an environmentally friendly plant cultivation system according to another embodiment of the present invention

Hereinafter, preferred embodiments of an environmentally friendly plant cultivation system according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Throughout the specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

1 to 5, the eco-friendly plant cultivation system includes an illuminance providing device 1 for providing illuminance required for the growth of a plant, And a temperature regulating device 3 for regulating the temperature of the gas. The eco-friendly plant cultivation system is a plant cultivation system that can be applied to a plant factory that allows artificial control of light (illumination), temperature, humidity, air, etc. in a certain space, Provide wind (heat) using sunlight and geothermal to make environment-friendly plant cultivation system. As described above, there has been a system for cultivating plants through the provision of roughness using the sun and the provision of wind using geothermal heat. However, in the process of cultivating plants, there are many problems such as overheating, It is not effective. Therefore, in the eco-friendly plant cultivation system according to the present invention, a practical plant cultivation system is provided by overcoming the problems such as heat of the roughness providing apparatus 1 and efficiency of the temperature adjusting apparatus 3 while using the sun and geothermal energy intact , An outer wall (C) forming a constant space in which plants can grow, and a plant bed (B) in which plants can grow and grow.

The illuminance providing apparatus 1 is configured to provide light within the plant growing space S in order to provide illumination (brightness of light) required for the growth of plants. Basically, An optical transmission unit 12 for transmitting the sunlight condensed by the condensing unit 11 to the plant growing space S and a light source unit 12 for transmitting the sunlight condensed by the light condensing unit 11 to the plant growing space S, A cooling unit 14 for cooling the illumination unit 13; a control unit 14 for controlling the illumination providing apparatus 1; And a rotation unit 15 for rotating the light condensing unit 11 according to the position.

As shown in FIG. 1, the light collecting unit 11 includes a lens, a reflector, and the like. The light collecting unit 11 collects the light collected by the light collecting unit 11, Light is transmitted to the illumination unit 13 in the plant growing space S through the optical transmission unit 12. [ Various known methods can be applied to the light collecting part 11, and a detailed description thereof will be omitted.

The optical transmission unit 12 is configured to transmit sunlight collected by the light collecting unit 11 to the lighting unit 13. Various methods such as an optical duct and an optical cable can be applied, Is applied to enable light transmission to various positions without loss of light.

The illuminating unit 13 is installed on the upper part of the plant growing space S and is connected to the optical transmitting unit 12 to receive sunlight from the optical transmitting unit 12, Let it diverge. Therefore, the light pipe 131 including the optical fiber connected to the optical transmission unit 12 is inserted to include the LED light 132 so as to divert the sunlight and to supplement the provision of the illuminance by the sunlight .

The light pipe 131 is connected to the optical transmission unit 12 so that an optical fiber can be inserted into the optical pipe 131. A hole is formed in an upper portion of the optical fiber so that sunlight is emitted into the light pipe 131, So that sunlight is reflected downward inside the pipe 131 so that sunlight can be emitted to the lower side of the light pipe 131. For example, in the case where the optical fiber is formed of a plastic optical fiber, the clad coated on the surface of the core may be removed to directly leak light from the core. In addition, So that light illumination can be formed. However, the present invention is not limited thereto, and various solar light emitting diodes may be used. However, since sunlight does not cause environmental pollution and there is no problem of depletion of resources, it is possible to provide environmentally friendly illumination (light) to plants, but sunlight can not provide sufficient illumination in case of cloudy day, The plant may not grow normally due to insufficient light provided by the plant. Therefore, when the provision of illumination by sunlight is not sufficient to compensate for this, illuminance is provided by the LED illumination unit 132.

The LED illumination 132 is a light made of an LED (Light Emitting Diode), and the LED is similar to natural light and emits light relatively smoothly and evenly to help the photosynthesis of the plant. Since the power consumption is very small It is suitable as an artificial light source that operates by receiving electricity. Since the LED illumination 132 needs to consume electricity in order to emit light, it is preferable to operate only when the illuminance provided by the sunlight is not smooth. Therefore, the light intensity of the sunlight is measured by the light intensity measuring module 151 of the controller 15, and when the illuminance does not reach the set value, the operation module 152, which will be described later, . However, in the case of the rainy season where the cloudy day continues, the illuminance by the sunlight is not smoothly provided, so that the LED illumination 132 must operate for a long time and heat is generated accordingly. Therefore, when the cloudy day continues or the illumination of the illuminating unit 13 is not smooth due to other causes, the illumination of the illuminating unit 13 due to the heat generated by the long time operation of the LED illumination unit 132 . Therefore, it is necessary to reduce the risk of failure or fire by cooling the LED illumination 132 even when the LED illumination 132 is continuously operated due to insufficient provision of illuminance by sunlight. Accordingly, In the present invention, the cooling unit 14 is formed around the LED illumination unit 132 to prevent overheating.

The cooling unit 14 is formed in the periphery of the LED illumination unit 132 to prevent overheating due to long-time use of the LED illumination unit 132, So that heat generated from the LED illumination 132 can be cooled. Therefore, even if the use of the LED illumination 132 continues because the cloudy day continues or the solar light does not reach the level required for the growth of the plant due to other causes, the failure due to the heat generation of the LED illumination 132 It is possible to prevent fire or the like. The cooling unit 14 includes an air cooling means 141 for preventing the heat of the LED illumination 132 by air. The air cooling means 141 includes an inlet pipe 141a through which external air flows, A heat exchanging tube 141b formed around the heat exchanging tube 132 for exchanging heat between the outside air and the LED illumination 132 and a heat exchanging tube 141b communicating with the heat exchanging tube 141b and having heat- And an outflow pipe 141c through which the water is discharged to the outside. The heat exchange pipe 141b may be formed inside the light pipe 131 as shown in FIG. 2 (a), or may be formed in the light pipe 131, as shown in FIG. 2 (b) And may be formed in various shapes such that heat exchange can be performed adjacent to the LED illumination 132. The cooling unit 141 may include a water cooling unit 142 according to another embodiment of the present invention to be described later.

The control unit 15 controls the operation of the illuminance providing apparatus 1 and measures the amount of sunlight supplied from the illuminance providing apparatus 1 so as to control the amount of sunlight supplied from the illuminance providing apparatus 1 to the plant growth space S If it does not reach the necessary illuminance, the LED illumination 132 may be operated to supplement the illuminance. 3, the control unit 15 controls the light intensity of the LED light 132 according to the amount of sunlight measured by the light amount measuring module 151 and the light amount measuring module 151, (Not shown).

The light amount measuring module 151 is configured to measure the amount of sunlight provided by the illuminance providing device 1. The light amount measuring module 151 collects the amount of sunlight collected through the light collecting part 11 and flowing through the optical transmission part 12 (Not shown) installed in the plant growing space S and an illuminance sensor (not shown) capable of measuring illuminance by sunlight can be applied. The operation module 152 is operated when the light amount of the solar light to be measured does not reach the set value.

When the amount of sunlight measured by the light amount measuring module 151 does not provide the illumination required for the growth of the plant, the operation module 152 operates the LED illumination 132 to adjust the illuminance required for the growth of the plant So that current flows through the LED illumination unit 132 and is operated.

The rotation unit 16 is configured to support the light collecting unit 11 from below and to rotate the light collecting unit 11 and includes a solar light sensor 161 for sensing the position of the sun, And a rotation driving module 162 for rotating the light condensing part 11. Therefore, the position of the sun is sensed by the solar photodetection sensor 161, and the rotation driving module 162 including the motor, the gear, and the like can rotate the condensing unit 11 in various directions So that efficient light condensation of sunlight can be achieved. Since the rotation unit 16 is the same as the known configuration, a detailed description thereof will be omitted.

The temperature regulating device 3 supplies warm air or cold air to the plant growing space S so that the temperature in the plant growing space S is maintained at a predetermined temperature suitable for plant growth, . The temperature control device (3) makes it possible to maintain the temperature of the plant growing space (S) environmentally friendly by using geothermal heat. In the basalt rocks such as volcanic regions such as Jeju Island, It is characterized by joints developed. At depths of 10 ~ 20m below ground, it has an underground temperature unchanged layer, where seasonal changes of temperature are hardly observed. It is maintained at about 15 ℃ throughout the year. In addition, since the air flow is maintained between the pores of the basalt rock, efficient heat exchange can be performed, and it is frequently used in conventional heat exchange systems using geothermal heat. However, there has been a system for supplying hot air or cold air using a conventional heat pump. However, due to a lot of heat loss and difficulty in control, efficient temperature control has not been achieved. Therefore, in the present invention, not only indirect blowing using the heat pump but also direct blowing using the underground air can be performed at the same time, and direct blowing and indirect blowing can be performed through one underground pipe, It becomes possible to provide the temperature control device 3 having high efficiency at a high cost.

The temperature regulating device 3 includes an indirect blowing unit 31 for blowing air using underground heat exchange and a direct blowing unit 32 for transferring the underground air directly into the plant growing space S, And a plurality of through holes 331 formed along the circumferential surface of the underground pipe 33 so that underground air or ground water can be introduced.

The indirectly inflow portion 31 is adapted to supply warm air or cool air into the plant growing space S through heat exchange with the underground air or ground water and inserts into the underground pipe 33 embedded in the ground, A first heat exchange loop 311 in which a fluid to be heat-exchanged with a heat pump is circulated; a heat exchange loop 311 which takes heat or cool air from the fluid circulating through the first heat exchange loop 311 and transfers it to the second heat exchange loop 313; A second heat exchange loop 313 for receiving heat or cool air from the heat pump 312 to provide a cold or warm air by the blowing means 314, a second heat exchange loop 313 And a blowing means 314 for receiving cold air or heat from a fluid circulating through the plant growing space S to supply a cold wind or a hot wind to the plant growing space S.

The first heat exchange loop 311 is inserted into the underground pipe 33 and circulates heat exchange fluid such as liquid or gas. The underground air circulating through the through hole 331 of the underground pipe 33 Direct heat exchange with groundwater maximizes heat exchange efficiency. The fluid obtained from the underground air and the ground water is heat-exchanged with the first heat exchanger (312a) of the heat pump (32), which will be described later.

The heat pump 312 is provided with heat or cool air received from the fluid circulating through the first heat exchange loop 311 by the first heat exchanger 312a, Thereby allowing heat exchange with the fluid circulating through the second heat exchange loop 313. The heat pump 312 includes a refrigerant circulation pipe 312f connecting the first heat exchanger 312a and the second heat exchanger 312b and providing a refrigerant flow path, A compressor 312c for circulating refrigerant between the first heat exchanger 312a and the second heat exchanger 312b and a second heat exchanger 312b provided between the first heat exchanger 312a and the second heat exchanger 312b An inflator 312d for lowering the pressure of the refrigerant, and a flow path switching valve 312e for switching the refrigerant flow path. However, the present invention is not limited to this, and various methods may be applied such that the second heat exchanging loop 313 is not necessary by directly blowing air into the plant growing space S from the second heat exchanger 312b. The heat exchange and operation by the heat pump 312 are as well known and will be briefly described as follows.

The operation of the heat pump 312 varies according to the supply of hot air or cold air, and the first heat exchanger 312a and the second heat exchanger 312b alternately assume roles of a condenser and an evaporator. For example, in the case of summer cooling, the fluid circulating in the first heat exchange loop 311 is cooled by underground air and groundwater, and the fluid in the cooled first heat exchange loop 311 flows through the first heat exchanger 312a, And the first heat exchanger 312a functions as a condenser at this time. The cooled refrigerant passing through the first heat exchanger 312a passes through the inflator 312d and becomes a low temperature and low pressure state and evaporates in the second heat exchanger 312b to absorb latent heat, And cools the fluid circulating through the heat exchange loop 313. At this time, the second heat exchanger 312b functions as an evaporator, and the cooled fluid is moved to the blowing means 314 along the second heat exchange loop 313 to provide cool air to the plant growing space S . On the other hand, when warm air is provided, the first heat exchanger 312a functions as an evaporator, the second heat exchanger 312b functions as a condenser, and the fluid circulating through the second heat exchange loop 313 is heated And moves to the blowing means (314) to provide warm air to the plant growing space (S).

In addition, the heat pump 312 may operate according to a temperature measured by a temperature sensor (not shown) installed in the plant growing space S. In the present invention, The amount of heat to be transferred by the heat pump 312 is relatively reduced by allowing the underground air to be transferred to the plant growing space S, thereby reducing the heat loss and enabling accurate control of the temperature.

The second heat exchange loop 313 is configured to circulate the heat-exchanging fluid with the second heat exchanger 312b. The second heat exchange loop 313 receives heat or cool air and provides the heat to the blowing means 314, The means 314 can provide heat or cool air from the fluid circulating in the second heat exchange loop 313 to provide warm or cool air.

The blowing means 314 is constituted by a fan coil unit connected to the second heat exchange loop 314 to exchange heat with the fluid flowing in the second heat exchange loop 314 and to provide hot air or cool air through a blower And the fan coil unit may pass the coil or the like during the passage of the fluid circulating through the second heat exchange loop 314 through the fan coil unit to increase the heat exchange efficiency and provide the wind by the blower, Or a wind obtained from cold air can be provided in the plant growing space (S).

The direct blowing unit 32 is configured to directly transfer the underground air flowing into the underground pipe 33 into the plant growing space S, and simultaneously with the indirect blowing unit 31, Thereby enabling effective geothermal heat transfer and accurate temperature control. The underground pipe 33 is formed with a plurality of through holes 331 so that underground air circulated through voids such as basalt is maintained in the underground pipe 33 and is circulated through the underground pipe 33 The air in the ground is maintained at a temperature between 10 ° C and 20 ° C even if heat exchange with the air circulating in the first heat exchange loop 311 is performed through the blower 322, ). ≪ / RTI > Therefore, even in an environment in which the temperature is lowered to below freezing in winter or the high temperature of 30 ° C or more in summer is continuously maintained, ground air between 10 ° C and 20 ° C is constantly provided in the plant growing space S, Or maintain a stable temperature that does not descend. 1, an air duct 331 communicating with the underground pipe 33 and inserted into the plant growing space S, and an air duct 331 connected to the air duct 331, And an air blower 332 installed to transfer the ground air into the plant growing space S.

The air duct 331 communicates with the underground pipe 33 and does not need to separately drill the ground hollow or require any additional equipment. The first heat exchange loop 311 is inserted into the air duct 331, And a blower 332 is formed in the air duct 331 so that the air inside the underground pipe 33 is transferred to the plant growing space S side by forming a duct to communicate with the underground pipe 33, do. The air duct 331 is formed with a plurality of air outlets 331a along the periphery of the portion to be inserted into the plant growing space S so that the underground air conveyed to the air duct 331 flows through the air outlet So that the temperature distribution of the entire plant growing space S can be evenly formed.

The blower 332 is formed in the air duct 331, preferably on the upper portion of the underground pipe 33 so that the underground air in the underground pipe 33 is transferred into the plant growing space S. The blower 332 is connected to a temperature sensor (not shown) formed inside the underground pipe 33 or a temperature measured by a temperature sensor (not shown) formed in the plant growing space S, And the amount of air to be transferred into the plant growing space (S) can be controlled according to the temperature in the plant growing space (S).

The underground pipe (33) is a cylindrical pipe embedded in the ground. It is preferable that the underground pipe (33) is formed in a temperature-invariant layer of 10 to 20 m underground which maintains a constant temperature throughout the year. So that the groundwater and the groundwater circulating in the ground can be introduced freely. Therefore, the heat exchange with the fluid circulating through the first heat exchange loop 311 can be smoothly performed, and the transfer of the underground air through the air duct 321 can be smoothly performed.

5, the eco-friendly plant cultivation system according to another embodiment of the present invention includes an environmentally friendly plant cultivation system, an illuminance providing apparatus 1 according to an embodiment of the present invention, (3), and the difference is that the cooling unit (14) includes a water cooling means (142) instead of the air cooling means (141). Of course, the air cooling means 141 and the water cooling means 142 may be formed at the same time, but it is preferable that only one of them is formed in consideration of efficiency and ease of installation. Therefore, the description of the same components will be omitted, and only the water-cooling means 142 will be described.

The water cooling means 142 is configured to prevent the LED light 132 from overheating by allowing the fluid to flow from the second heat exchange loop 313 to the vicinity of the LED illumination 132 of the illuminance providing device 1 And the water cooling means 142 is branched from the second heat exchange loop 313 and is in close contact with the light pipe 131, A bypass pipe 142a connected to the second heat exchange loop 313 and a pump 142b for allowing fluid to flow through the bypass pipe 142a.

The bypass pipe 142a is configured to allow the fluid flowing out from the second heat exchange loop 313 to flow near the LED light 132 to cool the heat generated from the operation of the LED light 132, The fluid flows out from the portion of the second heat exchange loop 313 where the fluid having a relatively low temperature flows and flows near the LED illumination 132. After the heat exchange with the LED illumination 132 is performed again, 2 heat exchange loop 313 to be connected to the higher temperature side. The bypass pipe 142a may be formed along the inner or outer periphery of the light pipe 131 like the heat exchange pipe 141b of the air cooling means 141, .

The pump 142b is configured to allow the fluid circulating through the second heat exchange loop 313 to flow into the bypass pipe 142a and to control the flow amount of the fluid according to the degree of overheating of the LED illumination 132. [ So that the prevention of overheating can be performed efficiently.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Should be interpreted as falling within the scope of.

1: illuminance providing device
11: light collecting part 12: optical transmission part
13: illumination part 131: light pipe 132: LED illumination
14: cooling section 141: air cooling means
141a: inlet pipe 141b: heat exchange pipe 141c: outlet pipe
142: water cooling means 142a: bypass pipe 142b: pump
15: control unit 151: light amount measurement module 152: operation module
16: rotation part 161: solar light sensor 162: rotation drive module
3: Thermostat
31: Indirect discharge
311: Heat exchange loop 312: Heat pump 313: Second heat exchange loop
314:
32: direct transmission
321: air duct 321a: air outlet 322: blower
33: underground pipe 331: through hole

Claims (5)

A plant cultivation system capable of cultivating a plurality of plants in a predetermined space,
And a roughness providing device for providing the roughness required for the growth of the plant,
The illuminance providing apparatus includes a light collecting unit for collecting sunlight, an optical transmission unit for transmitting the sunlight condensed by the light collecting unit to a plant growing space, and a light emitting unit for emitting sunlight transmitted by the optical transmitting unit to a plant growing space And a cooling unit for cooling the illumination unit,
The illumination unit may include an LED illumination unit to supplement the illuminance by sunlight,
Wherein the cooling unit includes air cooling means for circulating outside air adjacent to the LED illumination so as to prevent overheating by use of the LED illumination. The method according to claim 1,
Wherein the illumination unit includes a light pipe for emitting sunlight,
The air-
And an outlet pipe communicating with the inlet pipe and formed in the periphery or inside of the light pipe, and an outlet pipe communicating with the heat exchange pipe and allowing air to flow out to the outside, Friendly plant cultivation system. The method of claim 1, wherein the environmentally friendly plant growing system
And a temperature control device for controlling the temperature of the plant cultivation space,
Wherein the temperature regulating device simultaneously includes an indirect blowing part for blowing air using underground heat exchange and a direct blowing part for directly sending underground air into the plant growing space. The apparatus of claim 3, wherein the temperature regulating device
And an underground pipe which is embedded in the ground and has a plurality of through holes formed along the circumferential surface so that the underground air or ground water can be introduced,
Wherein the direct air blowing unit directs air in the underground pipe into the plant growing space,
Wherein the indirect blowing unit comprises: a first heat exchange loop inserted into the underground pipe and circulating the fluid absorbing and transmitting energy from air or water in the underground pipe; and a second heat exchange loop for performing heat exchange with the fluid circulating through the first heat exchange loop, And a heat pump for enabling supply of cold air or warm air to the inside of the plant growing space. 5. The apparatus according to claim 4, wherein the direct blower
An air duct communicating with the underground pipe and inserted into the plant cultivation space; and a blower installed in the air duct to transfer underground air into the plant cultivation space,
Wherein the air duct includes a plurality of air outlets formed to pass through the perimeter of the air duct.

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