JP2973918B2 - Construction method of laying a heater and a heater tube for heating and cooling on the existing ground of natural turf - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION By providing a heating and cooling facility in a sports facility (soccer, baseball, golf, multipurpose ground, etc.) such as a field where natural turf is growing, freezing of a field in the winter season, dying of the turf, or summer season The present invention relates to a construction method for laying a heater or a heating / cooling heater tube on an existing ground of natural turf, which prevents the turf from being adversely affected by a rise in the ground temperature of the turf.

[0002]

2. Description of the Related Art Protection equipment for natural turf with a heater is not very popular, and there are no examples in Japan at the experimental stage.

[0003] In this equipment, usually, a pipe for a heater is buried in the ground, and cold or hot water is flowed in the pipe to cool or warm the ground, thereby giving optimum conditions to the roots of natural turf.

[0004] The construction of such equipment can be easily performed on a new ground, but is difficult on an existing ground. After stripping all the natural turf that has already grown, excavating it to a certain depth, laying a heater pipe and backfilling it, it must be cured by sticking the natural turf, and it takes considerable time until the ground can be used again It takes time.

The present invention has been made in view of such circumstances, and embeds a heater or a heating / cooling heater tube in the ground without peeling off the natural grass of a sports facility such as an existing ground. In this case, since the heater uses a self-control type electric heater in which the amount of heat generated is automatically controlled according to the temperature, the optimum temperature for the turf is always ensured.

In the case of a heater tube for heating / cooling, the optimum temperature for the turf is always ensured by cooling or warming with cold or hot water of an optimum temperature sent from a cold / hot water supply facility.

[0007] In addition to preventing overcooling and overheating of the turf, it also saves energy and, after the construction, does not require a turf curing period, and can be used immediately for sports facilities such as a simple existing natural turf. An object of the present invention is to provide a method of laying a heater or a heating / cooling heater tube in a sports facility.

[0008]

This is a construction method of laying a heater or a heating / cooling heater tube on a sports facility such as an existing ground of natural turf, in a direction intersecting with the heater laying direction at one or both ends of the ground. Provide a gutter in advance, attach a cutter blade to the front or rear of the small heavy machine, cut a plurality of slits on the ground surface while moving the small heavy machine in the heater or heating / cooling heater pipe laying direction, The heater or heating / cooling heater tube fixed to the cutter blade was dragged and laid at the bottom of the slit, sand was poured into the slit and back-filled with sand, and in the case of a heater, the groove was buried in the gutter of the ground. Heating and cooling by bundling multiple heaters and joining them to the control panel For the heater tubes, through the header tube the heating and cooling for heater tubes,
The main purpose is to lay a heater or a heating / cooling heater tube on an existing ground of natural turf, which is characterized by being joined to a cold / hot water supply facility.

Here, in the case of laying a heater, it is also possible to cut a plurality of slits on the surface of the ground while moving the small heavy equipment in the laying direction, and to bury the heater manually at the bottom of the slit.

If the gutter of the sports facility such as the ground obstructs the character of the sport, it may be backfilled.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a heater A used in the present invention. Conductor core 2 cast with two parallel bus wires 1
(For example, polyethylene mixed with carbon) covered with an electric insulating jacket 3. In the case of dragging and laying with a small heavy equipment 4, strength is required, so that appropriate measures shall be taken.

FIG. 2 is a cross section of the ground 7 on which the heater A according to the present invention is laid.

One or a plurality of cutter blades 5 are attached to the rear of the small heavy equipment 4 so that the ground 7 on which the natural turf 6 grows has a width of 5 to 10 mm and a depth of 100 to 300 mm.
The slit 8 is cut in. The burying depth can be arbitrarily set by the sinking depth of the cutter blade 5. The heater A is fixed to the lower end of the cutter blade 5, and is pulled into the bottom of the slit 8 while being unraveled from the coil B wound and stored outside the heater.

FIG. 3 is a detailed view showing that the heater A is fixed to the lower end of the cutter blade 5 and the cutter blade 5 takes in the heater A while forming the slit 8.

It is also possible to bury the heater A manually in the slit 8 cut in advance by the small heavy equipment 4.

FIG. 4 is a plan view of the ground 7 surface. After crossing the ground 7 surface, the heater A is cut off.
Thereafter, sand is poured into the slits 8 cut in the ground 7 to bury them. After the necessary number of heaters A are buried in the whole surface of the ground by repeating the same method, the laid heater A is connected to the power cable by the side grooves 9 provided on the side of the ground in a direction intersecting the heater direction of the ground 7 in advance. 11 and the power cable is connected to the control panel 10 to fill back the gutter 9 to complete the natural turf heater facility.

FIG. 5 is a view in which the heater A is manually buried in the slit 8 previously cut in the round 7 by the small heavy equipment 4.

When a voltage is applied to the two power cables, a current flows through the conductor core 2 between the two wires 1, but when a certain temperature (about 40 ° C.) is reached, the electric resistance of the conductor core 2 becomes nearly infinite. In other words, the value of the current flowing through the conductor core 2 decreases, and when the temperature decreases, the electric resistance decreases, the value of the current flowing through the conductor core 2 increases, and the temperature of the heater A is automatically controlled.

FIG. 6 is a sectional view taken along the line CC of FIG.

FIG. 7 is a diagram of a heater tube D for heating and cooling used in the present invention. As the heating / cooling heater tube D, a tube such as a flexible hose such as a polyethylene tube or a polybutene tube is used. Use small-diameter pipes with a diameter of 15 to 25 mm. In the case of dragging and laying with a small heavy equipment 4, strength is required, so that appropriate measures shall be taken.

Heating / cooling heater tube D
The cross section of the ground 7 on which the ground is laid is similar to that of FIG. 2, but one or a plurality of cutter blades 5a having thick ends are attached to the rear part of the small heavy equipment 4 so that the ground on which the natural turf 6 grows. 5 to 10 mm wide and 100 to 3 depth on 7 surfaces
A 00 mm slit 8 is cut in. At this time, a space of φ15 to 30 mm is formed below the slit by the cutter blade 5a having a thick tip. The burying depth can be arbitrarily set by the sinking depth of the cutter blade 5a. At the lower end of the cutter blade 5a, the heating / cooling heater tube D is fixed, and is unscrewed from the coil E wound around the outside of the heating / cooling heater tube D. Dragging into the bottom.

FIG. 8 is a detailed view showing that the heating / cooling heater tube D is fixed to the lower end of the cutter blade 5a, and the cutter blade 5a takes in the heating / cooling heater tube D while forming the slit 8. It is.

FIG. 9 is a plan view of the ground 7 surface. After crossing the ground 7 surface, the heating / cooling heater tube D is cut off. After a while, Ground 7
Sand is poured into the slit 8 engraved in the back to backfill. The same method is repeated until the necessary number of heating / cooling heater tubes D are buried on the entire surface of the ground. Supply heating and cooling heater tube D to supply tube 1
2 or the return pipe 13, and after laying the pipe to the cold / hot water supply facility 14, the gutter 9 is backfilled to complete the heating / cooling heater facility for natural turf.

FIG. 10 is a sectional view taken along line FF of FIG.

The cold or hot water produced by the cold / hot water supply facility 14 is supplied to each heating / cooling heater pipe D through the supply pipe 12. While flowing through the heating / cooling heater tube D, it exchanges heat with the underground, and is collected in the return tube 13 and sent to the cold / hot water supply equipment 14.
After being cooled or heated here, water is sent to the heating / cooling heater tube D again. The cold / hot water circulates between the ground and the cold / hot water supply equipment 14, and plays a role of carrying heat. Various heat sources such as a heat pump, a poiler, and a cold / hot water generator using gas can be considered as the heat source of the cold / hot water supply equipment 14.

[0027]

The effect of the present invention is to embed a heater or a heating / cooling heater tube in the ground without removing the natural grass of a sports facility such as an existing ground. Here, since the heater uses a self-control type electric heater in which the amount of heat generated is automatically controlled according to the temperature, the optimum temperature for the turf is always ensured. In addition, heating
The cooling heater pipe can freely control the temperature of cold and hot water flowing inside, so in any case, not only prevents overheating and overcooling of the turf, but also saves energy, and requires a turf curing period after construction The present invention provides a method of laying a heater or a heating / cooling heater tube on an existing ground of a simple natural turf that can be used immediately without using the ground.

[Brief description of the drawings]

FIG. 1 is a diagram of a heater used in the present invention.

FIG. 2 is a cross section of a ground on which a heater according to the invention is laid.

FIG. 3 is a detailed view showing a state where a heater is fixed to a lower end of the cutter blade and the cutter blade takes in the heater while forming a slit.

FIG. 4 is a plan view of a ground plane when a heater is laid.

FIG. 5 is a diagram in which a small heavy machine embeds a heater manually in a slit cut in advance in a round.

FIG. 6 is a sectional view taken along line CC of FIG. 4;

FIG. 7 is a diagram of a heating / cooling heater tube used in the present invention.

FIG. 8 is a detailed view showing a heating / cooling heater tube fixed to the lower end of the cutter blade, and the cutter blade taking in the heating / cooling heater tube while forming a slit.

FIG. 9 is a plan view of a ground surface when a heating / cooling heater tube is laid.

FIG. 10 is a sectional view taken along line FF of FIG. 9;

[Explanation of symbols]

A: heater, B: heater stored in coil form, D: heater tube for heating / cooling, E
... Heating / cooling heater tube stored in a coil shape, 1... Wire, 2... Conductor core, 3.
Electrical insulation jacket, 4 ... Small heavy equipment, 5 ... Cutter blade, 5a ... Cutter blade, 6 ... Natural turf,
7: Ground, 8: Slit, 9: Gutter, 10
... Control panel, 11 ... Power cable, 12 ... Supply pipe,
13 Return pipe, 14 Cold / hot water supply equipment

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-49-57387 (JP, A) JP-A-6-123383 (JP, A) JP-A-7-103365 (JP, A) (58) Survey Field (Int.Cl. ⁶ , DB name) E01C 11/24 A01G 7/00 601 E01C 13/00 E02D 3/11

Claims (3)

(57) [Claims] 1. A construction method in which a heater is laid on a sports facility such as an existing ground of natural turf. A gutter is provided at one end of the ground in a direction intersecting with a direction in which the heater is laid, and a cutter blade is provided in front of or behind a small heavy equipment. At the same time, while moving the small heavy equipment in the heater installation direction, cut a plurality of slits on the ground surface, at the same time, drag the heater fixed to the cutter blade, lay it at the bottom of the slit, sand the slit A method of laying a heater on an existing ground of natural turf, characterized in that the heater is backfilled with flowing sand, and the plurality of buried heaters are bundled and joined to a control panel in a gutter of the ground. 2. A construction method in which a heater is laid on a sports facility such as an existing ground of natural turf, wherein a gutter is provided at one end of the ground in a direction intersecting with a direction in which the heater is laid, and a cutter blade is provided in front of or behind a small heavy equipment. Attaching, carving a plurality of slits on the ground surface while moving the small heavy equipment in the heater laying direction, burying the heater manually at the bottom of the slit, pouring sand into the slit, backfilling with sand, A method of laying a heater on an existing ground of natural turf, wherein the plurality of buried heaters are bundled and joined to a control panel in a side groove of the ground. 3. A construction method for laying a heating / cooling heater tube on a sports facility such as an existing ground of natural turf, wherein a gutter is provided at both ends of the ground in a direction intersecting with the laying direction of the heating / cooling heater tube. A cutter blade is attached to the front or rear of the small heavy machine, and a plurality of slits are cut into a ground surface while moving the small heavy machine in a heating / cooling heater pipe laying direction. The stuck heating / cooling heater tube is dragged and laid at the bottom of the slit, sand is poured into the slit, back-filled with sand, and the plurality of heating / cooling heater tubes embedded in the gutter of the ground are removed. The existing ground of natural turf characterized by being joined to a cold / hot water supply source Construction method of laying heater tubes for heating and cooling.