JP2971062B1 - Golf course lawn protection management method and apparatus - Google Patents

Abstract

Abstract: [Problem] By utilizing the fact that the temperature of soil suitable for growing turf and the temperature of groundwater pumped from wells are close to each other, the turf can be efficiently heated without winter withering, summer burns, etc. occurring. Can grow well. SOLUTION: A heat exchange pipe 1 for circulating water as a heat medium.
Are disposed in the soil 3 below the turf vegetation surface 2. Groundwater pumped from the well by the pump device 18 from the water storage tank 10 is circulated to the heat exchange pipe 1. The heat exchange pipe 1 alternately forms a heat radiating portion 4 substantially parallel to the grass vegetation surface 2 and a heat absorbing portion 5 that bends downward from the heat radiating portion 4 to absorb geothermal heat. The heat absorbing portion 5 has a portion 7 substantially parallel to the lawn vegetation surface 2. The upper end of the heat pipe 8 facing downward is connected to the heat absorbing portion 5 of the heat exchange pipe 1. The lower end of the water tank 10 is connected to the upper end of the heat pipe 17 facing downward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lawn protection and management device for golf course greens, tee grounds and the like.
The present invention relates to a method and apparatus for protecting and managing lawn of a golf course, which prevents winter withering due to frost and freezing in a cold season, lawn mowing and stuffiness in a hot season.

[0002]

2. Description of the Related Art As a conventional lawn protection and management method for preventing the growth of green lawn or winter withdrawal of this kind of golf course, for example, as described in JP-A-1-199520, A heat exchange pipe is disposed in the lower soil of the vegetation surface substantially in parallel with the turf vegetation surface, and a heat medium circulating in the heat exchange pipe exchanges heat with a heat exchanger of a heat pump refrigeration apparatus. The heat medium circulating in the heat exchange pipes is heated or cooled, and the heated or cooled heat medium circulates through the heat exchange pipes, thereby heating or cooling the lower soil of the turf vegetation surface so that the turf Methods for preventing winter withering and summer burn are known.

[0003]

In the above-mentioned conventional lawn protection and management method, the heat exchange pipe is disposed in the soil below the lawn vegetation surface substantially in parallel with the lawn vegetation surface. Even though the heat medium circulating through the pipes can heat or cool the lower soil of the turf vegetation surface to prevent wintering or summer burn, the heat medium exchanges heat with the soil and a large temperature difference is likely to occur between the upstream and downstream sides In order to grow grass evenly, a plurality of heat exchange pipes must be provided, and an expensive heat pump refrigeration system must be provided.

The present invention has been made in view of the above-mentioned problems. In particular, the present invention is based on the fact that the soil temperature suitable for growing turf and the temperature of groundwater pumped from a well are similar, and the heat pump refrigeration system and the like are used. Without winter cooling,
An object of the present invention is to provide a method and apparatus for protecting and managing a lawn of a golf course, in which a lawn can be satisfactorily grown with good thermal efficiency in the summer and winter without causing summer burns.

[0005]

According to a first aspect of the present invention, there is provided a method for protecting and managing a lawn of a golf course, wherein a groundwater pumped from a well stored in a water storage tank is used as a heat medium and a lower part of a lawn vegetation surface is driven by a pump device. The heat is circulated through a heat exchange pipe provided in the soil, and the heat of the heat medium is radiated by a heat radiating portion substantially parallel to the turf vegetation surface of the heat exchange pipe, and is bent downward from the heat radiating portion. The heat absorbing portion absorbs geothermal heat into the heat medium.

The groundwater pumped from the well is circulated as a heat medium to a heat exchange pipe by a pump device, so that the heat medium exchanges heat with the lower soil of the turf vegetation surface near the ground surface temperature, and the turf vegetation surface. The lower soil of is heated or cooled.

[0007] Since the temperature of the heat medium is similar to the soil temperature suitable for growing turf and the temperature of groundwater pumped from a well,
There is no need to heat or cool the heat medium with a heating / cooling device, etc. In addition, the heat exchange pipe radiates heat from the heat medium at a heat radiation part approximately parallel to the grass vegetation surface, and the ground surface of the grass vegetation surface Heats or cools the soil close to the soil to a temperature suitable for growing turf, and absorbs the geothermal heat of the soil deeper than the ground surface at the heat absorbing part bent downward from the heat radiating part of the heat exchange pipe. And
Since the heating medium is heated or cooled, the temperature difference between the upstream and downstream sides of the heating medium that circulates the heating medium is small, and the soil that is evenly close to the ground surface of the turf vegetation surface reaches a temperature suitable for growing turf. It is maintained and turf cultivation is performed well throughout the four seasons.

According to a second aspect of the present invention, there is provided a golf course lawn protection / management apparatus, wherein the heat exchange pipe is provided in soil below the grass vegetation surface and circulates a heat medium, and the heat exchange pipe connects the heat exchange pipe to the well. A water storage tank for storing the pumped ground water, and a pump device for circulating the ground water stored in the water storage tank as a heat medium in the heat exchange pipe, wherein the heat exchange pipe has a heat radiation substantially parallel to the lawn vegetation surface. And a heat absorbing portion which is bent downward from the heat radiating portion and absorbs geothermal heat is formed alternately.

[0009] By circulating the groundwater pumped from the well stored in the water storage tank as a heat medium to the heat exchange pipe by a pump device, the lower soil of the turf vegetation surface near the ground surface temperature and the heat medium are separated. The heat exchange heats or cools the soil below the turf vegetation surface. This heat medium is similar to the temperature of the soil suitable for growing grass and the temperature of the groundwater pumped from the well, so there is no need to heat or cool the heat medium with a heating / cooling device, etc. The lower soil is maintained at a temperature suitable for growing turf.

Further, the heat exchange pipe is formed by alternately forming heat radiating portions substantially parallel to the grass vegetation surface and heat absorbing portions bent downward from the heat radiating portions, so that the heat radiating portions radiate the heat of the heat medium. The soil near the ground surface of the turf vegetation surface can be heated or cooled to a temperature suitable for growing grass, and the heat absorption part of the heat exchange pipe absorbs the geothermal heat of the soil deeper than the ground surface,
Heating or cooling the heat medium reduces the temperature difference between the upstream and downstream sides of the heat medium that circulates the heat medium, so that the soil close to the ground surface of the turf vegetation surface is evenly suitable for growing turf. And turf cultivation is carried out well throughout the four seasons.

According to a third aspect of the present invention, there is provided a golf course lawn protection management device according to the second aspect, wherein the heat-absorbing portion of the heat exchange pipe has a portion substantially parallel to the lawn vegetation surface. Things.

The heat absorbing portion located deeper in the soil than the heat radiating portion of the heat exchange pipe becomes longer, and the heat medium that has exchanged heat with the soil in the heat radiating portion has an improved geothermal heat absorbing efficiency, and the heat exchange efficiency is improved. The heat medium flowing through the pipe exchanges heat again with the soil near the turf vegetation surface in the heat exchange part, so that geothermal can be used effectively, and the arrangement surface of the heat exchange pipe is widened and close to the ground surface of the turf vegetation surface The soil can be uniformly maintained at a temperature suitable for growing turf.

According to a fourth aspect of the present invention, there is provided a golf course lawn protection / management apparatus according to the second or third aspect, wherein the heat exchange pipe has a heat absorbing portion having a heat pipe directed downward. The upper end is connected.

The heat absorbing portion located deeper in the soil than the heat radiating portion of the heat exchange pipe absorbs the geothermal heat in the deep portion of the soil by the heat pipe, thereby increasing the heat absorbing efficiency of the geothermal heat, The heat medium flowing through the pipe exchanges heat again with the soil near the turf vegetation surface at the heat radiating section, so that the geothermal can be reliably used. Can be uniformly maintained at a temperature suitable for growing turf.

According to a fifth aspect of the present invention, there is provided a golf course lawn protection management device according to any one of the second to fourth aspects, wherein the bottom of the water storage tank is directed downward. The upper end of the heat pipe is connected.

[0016] Then, the water pumped from the well stored in the water storage tank and the groundwater circulated using the heat exchange pipe as a heat medium and returned to the ground were absorbed by the heat pipe to absorb geothermal heat at a deep position in the soil, and were pumped from the well. Maintained at a temperature close to groundwater.

According to a sixth aspect of the present invention, there is provided a lawn protection / management device for a golf course, wherein the heat exchange pipe is provided in the lower soil of the turf vegetation surface and circulates a heat medium, and the heat exchange pipe is connected to the heat exchange pipe. A water storage tank for storing the pumped ground water, and a pump device for circulating the groundwater stored in the water storage tank as a heat medium in the heat exchange pipe, and an upper end of the heat pipe directed downward to the heat exchange pipe. Connected.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

The heat exchange pipe 1 is disposed in the lower soil 3 at a depth close to the ground surface of the turf vegetation surface 2 in a meandering manner as viewed from a plane. This heat exchange pipe 1 is a grass vegetation surface 2
A heat radiating portion 4 that radiates heat to the lower soil 3 and a heat absorbing portion 5 that is bent downward from the heat radiating portion 4 and absorbs geothermal heat are formed alternately. As shown in FIG. 2, each heat radiating portion 4 of the heat exchange pipe 1 is formed substantially parallel to the lawn vegetation surface 2 and substantially linearly, and is bent downward from both ends of each heat radiating portion 4. The heat-absorbing portion 5 is formed by a substantially vertical portion 6 inclined toward the lower side of the heat-radiating portion 4, and a lower end portion of the substantially vertical portion 6 is formed with the grass vegetation surface 2 and a substantially parallel portion 7. .

The upper end of a downwardly directed heat pipe 8 is connected to a lower parallel part 7 formed in part or all of the heat absorbing part 5 of the heat exchange pipe 1.

The upstream end of the heat exchange pipe 1 is a water storage tank.
The downstream end of the heat exchange pipe 1 is connected to an auxiliary water storage tank 11, and the water storage tank 10 and the auxiliary water storage tank 11 are connected to each other by a communication pipe 12. Also this water tank
The water storage tank 10 and the auxiliary water storage tank 11 are buried underground, and the water storage tank 10 and the auxiliary water storage tank 11 are provided with an air vent pipe 13. In the water tank 10 and the auxiliary water tank 11, groundwater pumped from a well is stored from a water supply pipe 14. Further, a sprinkling pipe 16 is connected to the auxiliary water storage tank 11.

The lower ends of the water storage tank 10 and the auxiliary water storage tank 11 are connected to upper ends of the downwardly directed heat pipes 17, respectively.

Further, a pump device 18 for circulating the heat exchange pipe 1 using groundwater stored in the water storage tank 10 as a heat medium is connected to the upstream side of the heat exchange pipe 1.

Next, the operation of this embodiment will be described.

The groundwater pumped from the well, which is supplied from the water supply pipe 14 to the water storage tank 10 and stored in the water storage tank 10, is supplied to the heat exchange pipe 1 provided in the lower soil 3 of the turf vegetation surface 2 by the pump device 18 as a heat medium. Circulated. The water of the heat medium circulating through the heat exchange pipe 1 radiates heat to the lower soil 3 of the turf vegetation surface 2 by a heat radiating part 4 substantially parallel to the turf vegetation surface 2, and the lower soil 3 of the turf vegetation surface 2 Warm or cool. The temperature of water pumped from the well is 14
C. to about 18.degree. C., the lower soil 3 of the turf vegetation surface 2 is also heated or cooled to this temperature, and the temperature of the soil 3 is set to a temperature close to the ground temperature of about 10.degree. Become.

The water circulating in the heat exchange pipe 1 is radiated by the heat absorbing portion 5 bent downward from the heat radiating portion 4.
Heat is exchanged with the geothermal heat at a position where the influence of the temperature on the ground surface is smaller, and the heat is absorbed, and the water of the heat medium is heated or cooled in the heat absorbing portion 5 by heat exchange with the soil 3. And heat exchange pipe 1
Since the heat absorbing portion 5 has a substantially parallel portion 7 formed with the turf vegetation surface 2, the portion that absorbs geothermal heat in the deep part of the soil 3 becomes longer, and the heat medium whose temperature is changed by radiating heat in the heat radiating portion 4. Water is again heating or cooling the heating medium,
The heat efficiency is increased, the water circulating in the heat exchange pipe 1 has a small temperature difference between the upstream side and the downstream side, and the soil evenly close to the ground surface of the turf vegetation surface is maintained at a temperature suitable for growing turf. Cultivation is carried out well throughout the four seasons.

In addition, the turf leaves are not heated or cooled, but the soil 3 on which the roots are stretched is kept at a stable temperature. Is good.

Further, the heat pipe 8 connected to the heat absorbing section 5 of the heat exchange pipe 1 allows the heat radiating section 4
In the heat absorbing portion 5 located in a deeper part of the soil, the geothermal heat in the deeper part of the soil is absorbed by the heat pipe 8, the efficiency of absorbing the geothermal heat is increased, and the water of the heat medium flowing through the heat exchange pipe 1 Again heat exchange with the soil 3 close to the turf vegetation surface 2 by the heat radiating unit 4 makes it possible to reliably use geothermal heat, and even if the arrangement surface of the heat exchange pipe 1 is widened, the soil 3 close to the wide turf vegetation surface 2 Can be uniformly maintained at a temperature suitable for growing turf.

Further, the water of the heat medium circulated by exchanging heat with the soil through the heat exchange pipe 1 is returned to the auxiliary storage tank 11, and the water stored in the auxiliary storage tank 11 is transferred from the communication pipe 12 to the storage tank 10. Is flowed in. Then, the water stored in the water storage tank 10 and the auxiliary water storage tank 11 buried in the soil is less affected by the temperature due to the outside air, and furthermore, the heat pipe 17 connected to the bottom of the water storage tank has a water pipe 17 at a deep position in the soil. Geothermal heat is absorbed and maintained at a temperature close to the groundwater pumped from the well.

The water returned to the auxiliary water storage tank 11 is sent out from the water sprinkling pipe 16 to the water sprinkling device and used for water sprinkling.
By supplying the groundwater pumped from the well to the water storage tank 10, the temperature change of the water is reduced, and the decay of the water is prevented.

The flow rate and flow rate of the heat medium circulating in the heat exchange pipe 1 are adjusted by detecting the temperature of the lower soil 3 on the grass vegetation surface 2 with a temperature sensor. For example, a large amount of water is circulated at a high flow rate during low temperatures in the cold season, and a small amount of water is circulated during a daytime temperature rise. Reduce the amount of water circulated when the temperature drops.

In the above-described embodiment, the heat exchange pipe 1 has a configuration in which the heat radiating portions 4 and the heat absorbing portions 5 are alternately formed in a linear shape. However, the present invention is not limited to this configuration.
As shown in FIG. 3, the heat exchange pipe 1 is wound in a substantially elliptical spiral shape, and a portion substantially parallel to the upper turf vegetation surface is used as a heat radiator 4. The soil near the ground surface is heated or cooled so as to have a temperature suitable for turf growth, and a lower portion than both ends of the heat radiating portion 4 is a heat absorbing portion 5, and the heat absorbing portion 5 is a soil deeper than the ground surface. , And heat or cool the water of the heat medium.

The lower part of the heat absorbing part 5 is located on the grass vegetation surface 2.
And the substantially parallel portion 7, so that geothermal energy can be efficiently absorbed.

Also in this embodiment, the upper end of the downwardly directed heat pipe is connected to a parallel portion 7 formed below a part or all of the heat absorbing portion 5 of the heat exchange pipe 1.
The effect of absorbing geothermal heat can be enhanced.

Further, in the embodiment shown in FIG.
Although the auxiliary water storage tank 11 is provided, the auxiliary water storage tank is not always necessary, and one water storage tank 10 may be used.

Next, the configuration of another embodiment will be described with reference to FIG.

The heat exchange pipe 1 is disposed in the lower soil 3 at a depth close to the ground surface of the turf vegetation surface 2 so as to be substantially parallel to the turf vegetation surface and meandering when viewed from a plane.

The lower end of the heat exchange pipe 1 is connected to the upper end of the heat pipe 8 which faces downward at predetermined intervals.

The upstream end of the heat exchange pipe 1 is connected to a water storage tank buried underground as in the embodiment shown in FIG. 2, and the downstream end of the heat exchange pipe 1 is underground. It is connected to the buried auxiliary water tank, and this water tank and the auxiliary water tank are in communication. The upper ends of the downwardly directed heat pipes are connected to lower portions of the water storage tank and the auxiliary water storage tank, respectively.

Further, a pump device for circulating the groundwater stored in the water storage tank to the heat exchange pipe 1 is connected to the heat exchange pipe 1.

Next, the operation of this embodiment will be described.

The groundwater pumped from the well stored in the water storage tank is used as a heat medium by a pump device for turf vegetation surface 2.
Is circulated through the heat exchange pipes 1 disposed in the lower soil 3 of the above. The water of the heat medium circulating through the heat exchange pipe 1 radiates heat to the lower soil 3 of the turf vegetation surface 2 to heat or cool the lower soil 3 of the turf vegetation surface 2. The water circulating as the heat medium heats or cools the lower soil 3 of the turf vegetation surface 2 to the temperature of the water pumped from the well, and the temperature of the soil 3 is set to a temperature close to the underground temperature suitable for growing turf. Become.

Further, the heat pipe 8 connected to the heat exchange pipe 1 absorbs the geothermal heat at a deep position in the soil by the heat pipe 8 located deeper in the soil than the heat exchange pipe 1, and the heat absorption efficiency of the geothermal heat And heat exchange pipe 1
The water of the heat medium flowing through the pipe exchanges heat again with the soil 3 close to the turf vegetation surface 2, so that the geothermal can be reliably used,
Even if the disposition surface is widened, the soil 3 close to the wide turf vegetation surface 2 can be uniformly maintained at a temperature suitable for growing turf.

The water circulated by exchanging heat with the soil through the heat exchange pipe 1 is returned to the auxiliary storage tank, and the water stored in the auxiliary storage tank flows into the storage tank from the communication pipe.

The water stored in the water storage tank and the auxiliary water storage tank buried in the soil is less affected by the temperature due to the outside air. Geothermal heat is absorbed and maintained at a temperature close to the groundwater pumped from the well.

[0046]

According to the first and second aspects of the present invention,
Using the groundwater pumped from the wells as a heat medium, the groundwater can exchange heat with the lower soil under the grass vegetation surface, such as a green golf course near the ground surface, to heat or cool the lower soil under the grass vegetation surface. The medium is similar to the soil temperature suitable for growing turf and the temperature of groundwater pumped from wells.
There is no need to heat or cool the heat medium with a heating / cooling device, etc. In addition, the heat of the heat medium is radiated by the heat radiating part approximately parallel to the turf vegetation surface of the heat exchange pipe and the ground surface of the turf vegetation surface Heats or cools the soil close to the soil to a temperature suitable for growing turf, and absorbs the geothermal heat of the soil deeper than the ground surface at the heat absorbing part bent downward from the heat radiating part of the heat exchange pipe. And
Because the heating medium is heated or cooled, the temperature difference between the upstream and downstream sides of the heating medium that circulates the heating medium is small, and the soil evenly close to the ground surface of the turf vegetation surface reaches a temperature suitable for turf growing. It is maintained and turf cultivation is performed well throughout the four seasons, and comfortable golf can be played throughout the year.

According to the third aspect of the present invention, the heat absorption efficiency of the geothermal heat is enhanced by the long heat absorbing portion located deeper in the soil than the heat radiating portion for exchanging heat between the heat medium of the heat exchange pipe and the soil. The heat medium flowing through the heat exchange pipe exchanges heat again with the soil near the turf vegetation surface in the heat exchange section, so that geothermal can be used effectively, and The soil close to the surface can be uniformly maintained at a temperature suitable for growing turf.

According to the fourth aspect of the invention, the heat absorbing portion located deeper in the soil than the heat radiating portion of the heat exchange pipe absorbs the geothermal heat in the deep portion of the soil by the heat pipe, and the geothermal energy is reduced. The heat absorption efficiency is increased, and the heat medium flowing through the heat exchange pipe exchanges heat again with the soil near the turf vegetation surface at the heat radiating section, so that the geothermal can be reliably used, and even if the arrangement area of the heat exchange pipe is widened Therefore, soil close to a wide turf vegetation surface can be uniformly maintained at a temperature suitable for growing turf.

According to the fifth aspect of the present invention, the water pumped from the well stored in the water storage tank and the groundwater circulated by using the heat exchange pipe as a heat medium and returned to the ground by the heat pipe at a deep geothermal location The heat is absorbed and maintained at a temperature close to the groundwater pumped from the well, so that turf can be grown by effectively utilizing geothermal energy.

According to the sixth aspect of the present invention, groundwater pumped from a well is used as a heat medium, and the groundwater exchanges heat with the lower soil of a turf vegetation surface such as a green of a golf course near the surface temperature of the turf. The soil below the surface can be heated or cooled, and the heating medium is heated or cooled by a heating and cooling device, etc., because the soil temperature suitable for growing turf is similar to the temperature of groundwater pumped from wells. There is no need for cooling, and the heat exchange pipe is a heat pipe that is located deep in the soil. The temperature difference between the upstream side and the downstream side is small, and even if the surface where the heat exchange pipes are provided is widened, soil close to a wide vegetation surface can be uniformly maintained at a temperature suitable for growing turf.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of a lawn protection / management device for a golf course according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a heat exchange pipe section in the lawn protection and management device of the same golf course.

FIG. 3 is a longitudinal sectional view of a heat exchange pipe section in a golf course lawn protection and management device according to another embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a heat exchange pipe section in a golf course lawn protection and management device according to a further embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchange pipe 2 Lawn vegetation surface 3 Soil 4 Heat radiating part 5 Heat absorbing part 7 Parallel part of heat absorbing part 5 8, 17 Heat pipe 10 Water tank 18 Pump device

Claims (6)

(57) [Claims] 1. A groundwater pumped from a well stored in a water storage tank is circulated as a heat medium to a heat exchange pipe disposed in a lower soil of a turf vegetation surface by a pump device. A golf course lawn characterized in that heat of the heat medium is radiated by a heat radiating portion substantially parallel to the vegetation surface and geothermal heat is absorbed by the heat medium at a heat absorbing portion bent downward from the heat radiating portion. Protection management method. 2. A heat exchange pipe disposed in the lower soil of the turf vegetation surface to circulate a heat medium, a water tank connected to the heat exchange pipe and storing groundwater pumped up from a well, A pump device that circulates groundwater stored in the water storage tank as a heat medium, wherein the heat exchange pipe absorbs geothermal heat by bending downward from the heat radiating portion substantially parallel to the lawn vegetation surface and from the heat radiating portion. And a heat absorbing portion formed alternately. 3. The lawn protection and management system according to claim 2, wherein the heat absorbing portion of the heat exchange pipe has a portion substantially parallel to the lawn vegetation surface. 4. A lawn protection and management device for a golf course according to claim 2, wherein an upper end portion of the heat pipe directed downward is connected to a heat absorbing portion of the heat exchange pipe. 5. An apparatus according to claim 2, wherein an upper end of a downwardly directed heat pipe is connected to a bottom of the water storage tank. 6. A heat exchange pipe disposed in the lower soil of the turf vegetation surface and circulating a heat medium, a water reservoir connected to the heat exchange pipe and storing groundwater pumped up from a well, A pump device for circulating groundwater stored in the water storage tank as a heat medium, wherein an upper end portion of a downwardly directed heat pipe is connected to the heat exchange pipe, and a lawn protection management device for a golf course is provided. .