JPH0719492Y2 - Ice rink - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of an ice rink.

[0002]

2. Description of the Related Art Since an ice rink for speed skating has a long circumference, it is usually necessary to lay a large number of cooling pipes 2 in a lengthwise direction so as to be substantially parallel to each other. However, in this method, various problems occur in the cooling effect at each joint of the cooling pipe 2. For example, in the example of FIG. 5, a header 20 partitioned into four flow paths is placed on the floor surface 11 as a joint of the cooling pipes 2, and each cooling pipe 2 is connected to the header 20. In this header 20, two of the four partitioned flow paths are used for supplying the refrigerant and the other two are used for returning the refrigerant.
The cooling pipes 2 connected to the left and right sides of the cooling pipe 2 are connected to the refrigerant supply flow path and the refrigerant return flow path, respectively, and the other end of each cooling pipe 2 is connected to the adjacent header 20 and one end is supplied with the refrigerant. The other end is connected to the refrigerant return flow passage, and the one end is connected to the refrigerant return flow passage, and the other end is connected to the refrigerant return flow passage. In 2, the flow direction is opposite to each other.

However, in the method of arranging the header 20 on the floor surface as described above, since the header 20 has a large cross-sectional area and it is usually made of metal and has good thermal conductivity, it is above the header 20. The cooling effect becomes too strong as compared to other parts, and even if the ice rising portion B1 shown in FIG. 6 is formed or the ice rising portion B1 is not formed, the freezing layer B is formed in the vicinity of the header 20. It is known to have a tendency to be harder than other parts, and at the construction site, in order to solve the above-mentioned drawbacks, a device such as putting a cloth or the like on the header 20 as a heat insulating material 21 is made.

In the above method, the know-how of the operator is required for selecting the material and thickness of the heat insulating material 21, and the effect is not always sufficient and reliability is poor. There has been proposed a method of storing the inside of the floor in a recessed portion.

Japanese Patent Publication No. 61-52384 is known as a conventional method for accommodating a header in the recessed portion.
According to this method, as shown in FIG. 7, a support 22 having a circular cross section is provided in the upper part of the recess 10 and the cooling pipes 2 are crossed on the support 22 so that the cooling pipes 2 are supported by the support 22. The cooling pipe 2 is connected to either the coolant supply header 3 or the coolant recirculation header 4 by being curved along the peripheral surface of the coolant. Since it is very troublesome to attach and detach the cooling pipes 2 to and from the refrigerant supply header 3 and the refrigerant recirculation header 4 one by one, each cooling pipe 2 has a set of 10 to 30 pipes at its end. As shown in FIG. 8, the sub-header 6 is attached, and the sub-header 6 is attached to and detached from the refrigerant supply header 3 or the refrigerant return header 4. The sub-header 6 of FIG. 8 is a pipe-shaped sub-header body with both ends closed, and a header connection port 61 and a predetermined number of cooling pipe connection ports 62 are branched and connected to the sub-header body 60. It has been done.

[0006]

In the conventional example shown in FIG. 7 described above, as is clear from the figure, only the cooling pipe 2 is on the floor 1
Since it is laid horizontally on No. 1, it is currently evaluated that the most uniform frozen layer B can be obtained. However, in this conventional method, when the cooling pipes 2 are connected in advance to the predetermined number of sub-headers 6 and handled as a cooling pipe group,
After the support stand 22 is installed, the cooling pipes 2 are connected to the refrigerant supply header 3 and the refrigerant return header 4, and then the cooling pipes 2 are connected.
The supporting base 2 from the side in the ring-shaped part formed by the intersecting curved parts of
After inserting 2, the supporting base 22 must be fixed by an appropriate means (not shown), and since the cooling tubes 2 are not necessarily arranged in order, it is necessary to insert the supporting base 22 in trouble. Had challenges.

Further, in the above-mentioned conventional method, the upper opening of the recessed portion 10 is greatly opened as shown in FIG. 7 unless special construction is performed, and as a result, a large amount of water before freezing is stored in the recessed portion 10. The problem of large amounts of water flowing into the
There is a problem that when the ice-control vehicle rides on the recessed portion 10, there is a concern that the ice layer may crack.

Therefore, the present invention has been made to solve the above-mentioned drawbacks, and an object thereof is to provide an ice rink which is easy to lay and remove and can obtain a uniform ice layer.

[0009]

In order to solve the above-mentioned problems, the structure of the present invention, which is based on the above-mentioned utility model registration claim, has been constructed in accordance with the above-mentioned object.
Is provided with a plurality of recesses 10 so as to cross the link freezing area A, and the link freezing area A is provided with a plurality of spans 1a,
1b, 1c ... and each of these spans 1a, 1b,
A plurality of cooling pipes 2 are laid substantially parallel to each other on the floor surface 1c ... Along the length direction of the freezing area A, and the cooling pipes 2 are housed in the concave portion 10 to supply the refrigerant. In the ice rink that communicates with the refrigerant circulation header 3 and the refrigerant return header 4, the left lid body that slides on the recessed portion 10 from the floor surface 11 in the left-right direction to open and close the upper opening of the recessed portion 10. 5a and a right lid 5b are provided, and the cooling pipe 2 is made of a synthetic resin pipe having a bendable flexibility and a rigidity that does not locally bend even when being bent with a predetermined curvature. Further, the cooling pipe 2 laid in the span 1a on the left side of the recess 10 passes over the left lid 5a and curves into the recess 10 through the gap with the right lid 5b,
The refrigerant supply sub-header 6a or the refrigerant recirculation sub-header 6b on the tip side is located on the left side in the recessed portion 10, and the cooling pipe 2 laid on the span 1b on the right side of the recessed portion 10 is located on the right lid 5b. Through the gap with the left side lid body 5a to enter the concave portion 10 by curving, and the refrigerant supply sub-header 6a or the refrigerant return sub-header 6b on the tip side thereof is located on the right side in the concave portion 10 and The technical means is characterized in that the supply sub-headers 6a, 6a are connected to the refrigerant supply header 3 and both the refrigerant return sub-headers 6b, 6b are connected to the refrigerant return header 4.

[0009]

Therefore, according to the present invention, when the cooling pipe 2 is laid, the left lid 5a and the right lid 5b are opened to the left and right, and the upper part of the concave portion 10 is widely opened. The cooling pipe 2 laid on the span 1a on the left side of the recessed portion 10 has a refrigerant supply sub-header 6a or a refrigerant recirculation sub-header 6b on the tip side thereof (a predetermined number of cooling pipes 2 are provided as a set and a refrigerant is previously supplied to the tip thereof). The sub-header 6a or the refrigerant recirculation sub-header 6b is mounted as in the conventional case.) Is located on the left side in the recess 10 (which is usually fixed and will be described in detail later), and the refrigerant is supplied. The sub-header 6a is connected to the refrigerant supply header 3 and the refrigerant recirculation sub-header-6b is connected to the refrigerant recirculation header 4.

Then, one end side of these cooling pipes 2 is provided with a predetermined amount of slack in the recessed part 10, and the other end side is laid on the floor surface 11 on the left side of the recessed part 10 while passing over the left side lid 5a. Then, the other end side similarly connects the refrigerant supply sub-header 6 a to the refrigerant supply header 3 and the refrigerant recirculation sub-header 6 b to the refrigerant recirculation header 4 in the adjacent recessed trunk portion 10. However, since one set of the cooling pipes 2 uses the sub-header on one end side as the refrigerant supply sub-header 6a and the sub-header on the other end side as the refrigerant return sub-header 6b, the refrigerant supply header 3 and the refrigerant return header 4 are The connection to is reversed in the adjacent recesses 10, 10. In addition, two sets of cooling pipes 2 are laid on the same floor surface 11. These two sets do not overlap each other vertically, but the pairs of cooling pipes 2 are alternately arranged on the floor surface. It is the same as the conventional one so that they are arranged side by side on 11.

After the cooling pipes 2 are laid on the left and right sides of the recess 10 as described above, the left lid 5a and the right lid 5b are slid toward the center of the recess 10. Then, each cooling pipe 2 loses its slack, and due to its flexibility and rigidity, it exhibits an action of maintaining a curved state as shown in FIG. The bending of the cooling pipe 2 can be maintained in a curved state with a large radius due to its rigidity, and the upper bending start portion is located closer to the left lid body 5a and the right lid body 5b. , 2 have the effect that their curved portions partially overlap.

The left lid 5a and the right lid 5b are slid toward the center so that the upper opening of the recess 10 is squeezed and the water before freezing leaks into the recess 10 at a reduced rate. Present. However, the left side lid 5a and the right side lid 5b cannot be completely closed, but since the two left and right two sets of cooling pipes 2 intricately intervene in the gap between them, the blockage rate is high. Exhibits the effect of.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure, A is a link icing region, which occupies a racetrack-shaped portion on the floor surface 11 having a prescribed length.

The floor surface 11 of the link freezing area A
Is provided with a plurality of recesses 10 so as to cross the link freezing area A, and the link freezing area A is provided with a plurality of spans 1a,
1b, 1c ... and each of these spans 1a, 1b,
A plurality of cooling pipes 2 are laid substantially parallel to each other on the floor surface 1c ... Along the length direction of the freezing area A, and the cooling pipes 2 are housed in the concave portion 10 to supply the refrigerant. It is the same as the conventional one so as to communicate with 3 and the refrigerant return header 4.

It should be noted that the cooling pipe is made up of a set of several pipes, and the sub-header 6 shown in FIG.
One is referred to as a refrigerant supply subheader 6a and the other is referred to as a refrigerant recirculation subheader 6b. ) Is attached in advance, and two sets of cooling pipes 2 are attached to the same portion of the floor surface 11. One set supplies the refrigerant from the right to the left, and the other set supplies the refrigerant from the left to the right. The header 3 and the refrigerant recirculation header 4 are connected to each other, and the cooling pipes 2 of each set are alternately arranged on the floor surface 11, which is conventionally known.

In the present invention, a left lid 5a and a right lid 5b are provided on the recess 10 to slide from the floor surface 11 in the left-right direction to open and close the upper opening of the recess 11. .

The left side lid 5a and the right side lid 5b may be made of an appropriate plate such as an iron plate, a wood plate, a synthetic resin plate or the like. In the illustrated example, they are simply placed on the floor surface 11. If necessary, a slide guide rail or the like is arranged on the floor surface 11, and a rolling wheel or the like guided by the guide rails is provided on the back side of the left side lid 5a and the right side lid 5b to prevent the slide. Of course, it may be possible to easily perform it only in a predetermined direction. When a simple plate-like body is placed on the floor surface 11 in the illustrated example, its length (left and right dimensions in FIG. 2) is set to be equal to or larger than the width of the recessed portion 10, and it is slid to the upper center side of the recessed portion 10. It is assumed that the tip side (the center side of the recess 10) does not fall into the recess 10 by its own weight.

In the illustrated example, a cooling pipe holder 7 is attached to the upper surfaces of the left lid 5a and the right lid 5b.
This cooling pipe holder 7 is arranged (may be omitted) as needed, and is made of a flexible synthetic resin mold material having an inverted T-shaped cross section. Holder hole 72 having an inner diameter equal to or slightly larger than the diameter
Are opened at regular intervals, and cut grooves 73 are provided from the upper side of the vertical wall portion 71 to the upper ends of the holder holes 72, and each cooling pipe 2 twists the vertical wall portion 71 at the cut groove portions 73. Cut groove 7
A wide space is provided in the three parts so that the middle part of the cooling pipe 2 can be fitted into the holder hole 72 through the cut groove 73.

Of course, the cut groove 73 may be replaced with a cutout having a width smaller than the diameter of the cooling pipe 2. Further, in the illustrated example, the cooling pipe holder 7 is provided on the left side lid body 5.
Although it is manufactured separately from a and the right lid 5b and fixed by a nailing screw or the like, which is not always clear in the figure, of course, it may be integrally formed with the left lid 5a or the right lid 5b. . In FIG. 2, 74 is a mere through hole, and the freezing tank B formed later is integrated through this through hole 74, so that the cooling pipe holder 7 is fixed in the freezing tank B at the initial stage of freezing. In addition, the purpose is to prevent the freezing tank B from being divided into left and right by the vertical wall portion 71 and being reduced in strength against external force.

In the present invention, the cooling pipe 2 is made of a synthetic resin pipe having a bendable flexibility and a rigidity that does not locally bend even if it is bent with a predetermined curvature. However, since the cooling pipe 2 which has been conventionally used also uses a synthetic resin pipe, it naturally has the flexibility and the synthesis referred to here, but if the flexibility is too large, the self-weight and the weight thereof are The weight of the flowing refrigerant causes the cooling pipe 2 to locally bend and impair the flow of the refrigerant. Therefore, by appropriately selecting the material and wall thickness, the flexibility is slightly reduced compared to the conventional one, and therefore the rigidity is increased.
It is harder to bend than before, but it is designed to be less deformed by load.

Further, the span 1 on the left side of the recess 10 is
The cooling pipe 2 laid on a passes through the left lid 5a and curves into the recess 10 through the gap between the left lid 5a and the right lid 5b, and the refrigerant supply sub-header 6a or the refrigerant recirculation sub-header 6b on the tip side thereof. Is located on the left side in the recess 10, and the cooling pipe 2 laid on the span 1b on the right side of the recess 10 passes over the right lid 5b and enters the recess 10 from the gap with the left lid 5a. It bends and enters, and the refrigerant supply sub-header 6a or the refrigerant recirculation sub-header 6b on the tip side thereof is positioned on the right side in the recessed portion 10, and both the refrigerant supply sub-headers 6a and 6a are placed in the refrigerant supply header 3 and both refrigerants are inserted. The reflux sub-headers 6b and 6b are connected to the refrigerant reflux header 4.

In order to position the refrigerant supply sub-header 6a and the refrigerant return sub-header 6b at the right and left portions in the recessed portion 10, usually, the refrigerant supply sub-header 6a and the refrigerant return sub-header 6b are connected to the refrigerant supply header 3. Alternatively, since the connection steel pipe 8 is used to connect to the refrigerant return header 4, if one end of the connection steel pipe 8 is fixed at a predetermined position, the connection with the connection steel pipe 8 causes the refrigerant supply sub-header 6a and the refrigerant return to flow. Since the position of the sub-header 6b can be fixed, this method may be adopted. However, in the present embodiment, unlike the illustration, since the flexible bull pipe is interposed in addition to the connecting steel pipe 8 in the connection to the refrigerant supply header 3 or the refrigerant return header 4, the refrigerant supply sub-header 6a and the refrigerant return are connected. It is necessary to fix the sub-header 6b so that its position does not change easily. In this case, the sub-header 6b is fixed to a fixed part such as the wall surface of the recessed portion 10 by using a pipe retainer or the like, which is also not shown. The stop arm may be fixed and the refrigerant supply sub-header 6a and the refrigerant recirculation sub-header 6b may be locked by the locking arm so as not to be displaced. Specific configurations of these are different from those of the related art. Since this is feasible, illustration and detailed description thereof are omitted.

Further, the refrigerant supply header 3 or the refrigerant recirculation header 4 is usually fixed in the recessed portion 10 (it does not need to be fixed because it does not displace in an ordinary state because it has a large pipe diameter and becomes a heavy object). A partition plate (not shown in the figure) is provided above the partition, and the connecting steel pipe 8 penetrates through the partition and projects upward, and is connected to the refrigerant supply subheader 6a and the refrigerant recirculation subheader 6b above the partition. Each refrigerant supply header 3 or refrigerant return header 4 is connected to a pipe line (not shown) and is connected to the refrigerant discharge port or the refrigerant return port of the refrigerator.

In the example shown in FIG. 5, for convenience of construction, it is difficult for the left lid 5a and the right lid 5b to be close to each other at the bending start portion of the cooling pipe 2 above the bending. Two
2 shows a coping method when the overlap at the curved portion is not sufficiently obtained as in the case of "FIG. 2", and the link icing region A is formed above the curved start ends of the left and right cooling pipes 2,2. Auxiliary cooling pipes 2a, 2a are attached in the transverse direction to compensate for the decrease in cooling efficiency at this portion.

Although not shown in the drawing, the bottom surface of the concave portion 10 is formed as an inclined surface, and a drainage groove is provided so that water does not collect in the concave portion 10. Is the same.

[0025]

Since the present invention is as described above, the cooling pipe 2 can be laid in the substantially same shape as the "FIG. 6" example which has been conventionally used, and a uniform frozen layer B can be obtained. It is possible to provide a possible ice rink.

Since the present invention uses the left lid 5a and the right lid 5b, the left lid 5a and the right lid 5 are
By sliding "b" and "b" to the center side after laying the cooling pipe 2, it is possible to obtain the shape of "Fig. 2", and the laying work can be significantly labor-saving compared with the conventional example. Body 5
Since a and the right lid 5b are fitted into the upper opening of the recess 10, the rate of water before freezing leaking into the recess 10 is reduced, and the space between the left lid 5a and the right lid 5b is Although they cannot be completely closed, a total of four sets of cooling pipes, two sets each on the left and right, are included in the gap between the two, so the blockage rate is high and almost no water is wasted. When water for watering is sprinkled, it is frozen and adheres to the outer peripheral surface of the cooling pipe 2, and the outer gap can be closed in a short period of time.) The ice rink can be provided.

Even if the left lid 5a and the right lid 5b are not locked to both outer end floors so as not to be lifted by an external force, the load of the cooling pipe 2 is applied,
If the freezing layer B is formed to a certain thickness, the drag force of the freezing layer B is also added, and even if the wheel of the ice control vehicle rides on the center of the recessed portion 10, the load is left side cover 5a and right side cover 5b. It is possible to provide an ice rink that is dispersed over a wide area via the and and reduces the risk of the freezing layer B cracking during ice conditioning work.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of an ice rink of the present invention.

FIG. 2 is a vertical cross-sectional view of a main part (recessed part).

FIG. 3 is a plan view of a right lid used in the present invention.

FIG. 4 is a side view of a right lid body.

FIG. 5 is a vertical cross-sectional view of a main part showing another embodiment.

FIG. 6 is a vertical cross-sectional view of a main part of a conventional example.

FIG. 7 is a vertical cross-sectional view of the relevant part of another conventional example.

FIG. 8 is a perspective view of a subheader used in a conventional example and this document.

[Explanation of symbols]

 A-link freezing area 11 Floor surface 10 Recessed portion 1a Span 1b Span 2 Cooling pipe 3 Refrigerant supply header 4 Refrigerant return header 5a Left lid 5b Right lid 6a Refrigerant supply subheader 6b Refrigerant return subheader

Claims (1)

[Scope of utility model registration request] 1. A plurality of recesses 10 are provided on a floor surface 11 of the link freezing area A so as to cross the link freezing area A, and the link freezing area A is provided with a plurality of spans 1a, 1b, 1c.
.. and each of these spans 1a, 1b, 1c ...
A large number of cooling pipes 2 are laid on the floor surface 11 along the lengthwise direction of the freezing area A in a substantially parallel shape, and the cooling pipes 2 are accommodated in the recess 10 and the refrigerant supply header 3 and the refrigerant return flow. In the ice rink that communicates with the header 4, the left lid 5 that slides on the recessed portion 10 from the floor surface 11 in the left-right direction to open and close the upper opening of the recessed portion 11.
a is provided with a right lid 5b, and the cooling pipe 2 is made of a synthetic resin pipe having a bendable flexibility and a rigidity that does not locally bend even when bent with a predetermined curvature. Further, the cooling pipe 2 laid in the span 1a on the left side of the recess 10 passes over the left lid 5a and curves into the recess 10 from the gap between the lid 5a and the right cover 5b. Refrigerant supply sub-header 6a or refrigerant return sub-header 6
b is located on the left side in the recess 10 and the recess 1
The cooling pipe 2 laid on the span 1b on the right side of 0 is the right side lid 5
2b through the gap between the left side cover 5a and the left side cover 5a, and enters into the concave portion 10 in a curved shape, and enters the refrigerant supply sub-header 6 on the tip side thereof.
a or the refrigerant recirculation sub-header 6b is located on the right side in the recessed portion 10, and both the refrigerant supply sub-headers 6a, 6a.
To the refrigerant supply header 3 and both refrigerant reflux sub-headers 6b,
An ice rink characterized by connecting 6b to the refrigerant reflux header 4.