JPH0735452A - Anti-freezing device under the skating rink - Google Patents

Abstract

(57) [Summary] [Purpose] The freezing of the skating rink under the floor of the skating rink, which can prevent the freezing of the underfloor of the skating rink with the earth floor structure, and can effectively use the cold heat that has been discarded without being used conventionally. Obtaining a protection device. [Constitution] Concrete layer 2 in which an ice making coil 1 is embedded
In the antifreezing device for the skating rink under the floor where water 3 is spread on the top of the skating rink to freeze the water 3 to form a link, water pipes 11 are laid at a predetermined interval under the heat insulation layer as an earth floor structure under the skating rink. An antifreezing device under the skating rink, which comprises a water circulation path 15 for the same water pipe 11 and a heat exchanger 17 for taking out cold heat in the same water circulation path 15. In addition, an antifreezing device under the floor of the skating rink, in which an air conditioning device 22 is connected to the heat exchanger 17 for taking out cold heat. Furthermore, an antifreezing device under the skating rink, which is provided with a heat exchanger 18 for heating water, which is connected to a water heating source 24 in the water circulation path 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to speed skating, figure skating, in which water is poured onto a concrete layer in which an ice making coil is buried, and the water is frozen to form a link.
The present invention relates to an underfloor anti-icing device for a skating rink that prevents freezing under the floor in a skating rink such as ice hockey.

[0002]

2. Description of the Related Art A skating rink under the floor where water is poured on a concrete layer in which a coil for ice making is buried and frozen to become a link is covered with ice or a coil for ice making for a long time even if heat insulation is applied. As it cools, it freezes and creates frost columns that can destroy the floor structure. As a countermeasure against this, conventionally, (1) as shown in FIG. 3, for example, water 3 is spread on a concrete layer 2 in which an ice making coil 1 constituted by arranging pipes having a diameter of 25 mm at a pitch of 80 mm is embedded. It is frozen to form a link, a waterproof concrete layer 4, a heat insulating material layer 5 and a concrete layer 6 are sequentially provided under the concrete layer 2, and an air layer 7 is further formed between the concrete layer 6 and the soil layer 8. By doing so, the underfloor of the skating rink has a floor slab structure, and the air layer 7 prevents destruction of the underfloor due to freezing.

(2) As shown in FIG. 4, the ice making coil 1
A waterproof concrete layer 4, a heat insulating material layer 5 and a concrete layer 6 are sequentially provided under the buried concrete layer 2, and a crushed stone layer 9 is further formed between the concrete layer 6 and the soil layer 8 to form an earth floor structure. , In this crushed stone layer 1 with a pitch of 1 m, diameter 1
By laying a ventilation pipe 10 of about 00 mm and passing air at about 10 ° C, destruction due to freezing under the floor is prevented.
The method such as is adopted.

[0004]

According to the above-mentioned conventional anti-freezing structure for the skating rink, in the case of the floor slab structure, a reinforcing bar structure or the like must be used in order to have floor strength, which results in a high cost. was there. In addition, the soil floor structure is more advantageous in cost than the floor slab structure, but it requires a blower for forcibly ventilating the ventilation pipe and its operating cost, and further, the air after ventilation is required. Was released into the atmosphere as it was, and was thrown away without utilizing the cold heat obtained by cooling the skating rink under the floor with ice or an ice-making coil for a long time.

The present invention has been made in order to solve the above problems, and it is possible to surely prevent the freezing of the skating rink under the floor of the earth floor structure and to discard it without using it conventionally. It is an object of the present invention to obtain an under-floor anti-freezing device for a skating rink that can effectively use cold heat.

[0006]

In order to solve the above-mentioned problems, an antifreezing device under the skating rink according to the present invention applies water to a concrete layer in which a coil for ice making is buried to freeze the water. In the anti-freezing device for the underfloor skating rink that has become a rink, a water pipe is laid at a predetermined interval below the heat insulating layer as an earth floor structure under the skating rink, and a water circulation path is configured for the water pipe.
It is characterized in that a heat exchanger for taking out cold heat is provided in the water circulation path.

Further, the present invention is characterized in that an air conditioning device is connected to the heat exchanger for taking out cold heat.

Further, the present invention is characterized in that a heat exchanger for heating water, which is connected to a water heating source, is provided in the water circulation path.

[0009]

Since the underfloor anti-icing device for a skating rink according to the present invention is constructed as described above, the skates having an interstitial floor structure can be obtained by circulating water having a temperature equal to or higher than a predetermined temperature through the water pipe through the water circulation path. It is possible to prevent freezing below the link floor. In addition, the heat exchanger for taking out cold heat provided in the water circulation path can take out cold heat from the water cooled through the water pipe laid under the floor of the skating rink, and use it effectively, and after taking out cold heat. The water whose temperature has risen can be recirculated to the water pipe laid under the floor of the skating rink through the water circulation path.

Further, by connecting the air conditioning equipment to the heat exchanger for extracting cold heat, the cold heat which was conventionally discarded can be effectively utilized for cooling or the like.

Further, by providing a heat exchanger for heating water, which is connected to a water heating source in the water circulation path, even if there is no use as cold heat, the water pipe under the skating rink has a predetermined temperature or higher. The water can be circulated.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a system configuration diagram of an underfloor antifreezing device according to the present invention, and FIG. 2 is a sectional view of the skating rink. The cross-sectional structure of the skating rink is
Similar to the soil floor structure shown in FIG. 4, for example, water 3 is put on the concrete layer 2 in which the ice-making coil 1 configured by arranging pipes having a diameter of 25 mm at a pitch of 80 mm is embedded, and frozen to form a link. In addition, a waterproof concrete layer 4, a heat insulating material layer 5, and a concrete layer 6 are sequentially provided under the concrete layer 2, and a crushed stone layer 9 is further formed between the concrete layer 6 and the soil layer 8. A water pipe 11 having a diameter of about 25 mm is laid in the crushed stone layer 9 at a pitch of 1 m, for example.

Both ends of the water pipe 11 have headers 1 respectively.
A closed loop water circulation path 15 is formed by a pipe 14 connected to the headers 2 and 13 and connecting the headers 12 and 13. In the water circulation path 15, a circulation pump 16 for circulating water, a heat exchanger 17 for taking out cold heat and a heat exchanger 18 for heating water are installed. The heat exchanger 17 for taking out cold heat is connected to an air conditioning device 22 for utilizing cold heat, which is composed of a water pump 19, a fan coil unit 20, an air conditioner 21, and the like, and a heat exchanger for heating water. A water heating source 24 including a water pump 23, ground water, a condenser of an ice making refrigerator of a boiler or a skating rink, etc. is connected to 18.

However, according to the above embodiment, the water pipe 11 laid in the crushed stone layer 9 under the floor of the skating rink is circulated through the circulation pump 16 and the header 12 to a predetermined temperature, for example, 10.
By circulating water at a temperature of ° C, it is possible to keep the floor below the skating rink above a certain temperature and prevent freezing due to the formation of frost columns. Then, in the process of circulating the water in the water pipe 11, the water cooled to about 5 ° C. is supplied to the header 13 and the pipe 14.
It can be led to the heat exchanger 17 for taking out cold heat by circulating the water through the closed loop water circulation path 15.

An air conditioner 22 is connected to the heat exchanger 17 for extracting cold heat, and the heat exchanger 17 for extracting cold heat is connected to the heat exchanger 17.
By sending water that has been cooled by heat exchange with cold water of about 5 ° C. to the fan coil unit 20, the air conditioner 21 and the like via the water pump 19, it can be used for indoor cooling and heating, On the other hand, water whose temperature has risen to about 10 ° C. by exchanging heat with the rectified water from the air conditioner 22 can be supplied to the water pipe 11 again via the header 12 by the circulation pump 16.

If there is no use as cold heat in winter or the like, water will freeze in the water pipe 11. Therefore, the water pump 19 on the air conditioning equipment 22 side is stopped and then the water pump 23 is turned on. A water heating source 24 that is operated and comprises ground water, a condenser of an ice making refrigerator for a boiler or a skating rink, etc.
By supplying hot water having a high temperature from the above to the heat exchanger 18 for heating water, the water cooled to 5 ° C. is heated to 10 ° C. again while being circulated in the water pipe 11 by this hot water, and supplied. Can, by means of which the water plumbing 1
Freezing within 1 can be prevented.

Therefore, in the skating rink that is used all year round, it is possible to take out cold heat from the underfloor of the skating rink for a long period from the middle period to the summer period and use it effectively for cooling and heating. Further, as the skating rink underfloor structure, an earth floor structure having a cost advantage can be adopted, and moreover, the freezing can be surely prevented.

[0018]

As described above, according to the icing rink underfloor antifreezing device of the present invention, by circulating water having a temperature equal to or higher than a predetermined temperature in the water pipe laid under the heat insulating layer under the skating rink, It is possible to reliably prevent freezing below the skating rink of the earth floor structure, and moreover,
As the link underfloor structure, it is possible to adopt an earth floor structure which can be made inexpensive. Further, conventionally, the energy used to prevent freezing in the case of an earth floor structure was discarded, but in the present invention, this wasted cold heat can be taken out and used for cooling and heating, etc. Energy saving can be realized by effective use of energy.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an underfloor anti-freezing device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the skating rink according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view of a skating rink having a conventional floor slab structure.

FIG. 4 is a cross-sectional view of a conventional skating rink having an earth floor structure.

[Explanation of symbols]

1 Coil for ice making 2 Concrete layer 3 Water 4 Waterproof concrete layer 5 Heat insulation layer 6 Concrete layer 8 Soil layer 9 Crushed stone layer 11 Water piping 12 Header 13 Header 14 Piping 15 Water circulation path 16 Circulation pump 17 Cold heat extraction heat exchanger 18 Water Heat exchanger for heating 19 Water pump 20 Fan coil unit 21 Air conditioner 22 Air conditioning equipment 23 Water pump 24 Water heating source

Claims (3)

[Claims] 1. In an antifreezing device for a skating rink under the floor where water is poured onto a concrete layer in which an ice making coil is buried, and the water is frozen to form a link, the skating rink underfloor has an earth floor structure to form a heat insulating layer. Frozen under the skating rink, characterized in that water pipes are laid at predetermined intervals in the lower part, a water circulation path is constructed for the water pipes, and a heat exchanger for taking out cold heat is provided in the water circulation path. Prevention device. 2. The anti-icing device under the skating rink according to claim 1, wherein an air conditioning device is connected to the heat exchanger for extracting cold heat. 3. The under-floor anti-freezing device for a skating rink according to claim 1, wherein a heat exchanger for heating water, which is connected to a water heating source, is provided in the water circulation path.