JPH11132613A - Method of and apparatus for making ice for ice skate link - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a link function in an ice skate link, by a method wherein cold heat is stored under a discounted electric charge at night, brine cooled at the time of starting a skate link game at day-time is circulated in an ice making coil and an operation charge for the link is efficiently reduced. SOLUTION: An ice chamber 4 is formed at an outer surface of an upper part of a concrete member 3', and an outer surface of a lower part of the concrete member 3' is contacted with a floor thermal-insulating member. Both ends of it are faced against a trench. An ice making hair-pin coil 51 through which an ice making cold brine passes is buried at the upper part of the concrete member and further an ice making hair pin tube 18 is buried at the lower part of the concrete member. Cold brine is made under utilization of night-time electrical power and stored in a cold heat storing tank, the cold brine is passed through the cold heat storing tube 18 by a brine pump and the concrete member 3' is cooled in advance in night time. In day time, a changing-over valve through which the brine passes is installed at the ice making coil to keep quality of ice. Accordingly, since cold heat is accumulated at the concrete member by discounted night time electrical power, an operation charge is efficiently restricted in day time operation under utilization of the ice making coil for keeping quality of ice and then quality of ice can be maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The disclosed technology belongs to the technical field of making ice on the ice surface of a skating rink of a predetermined size for performing ice skating such as speed skating and ice hockey.

[0002]

2. Description of the Related Art As is well known, the improvement of civic life has been greatly supported by the improvement of eating habits and the promotion of health, and various sports have become popular with amateurs and professional players. Skates are becoming popular with skiing.

[0003] In addition to the so-called figure skating and speed skating on ice, ice hockey and the like are actively performed in the kind of skating, and various competitions are also performed.

[0004] In a so-called ice skating rink for speed skating or ice hockey competition, an ice making surface (room) of a predetermined area having a set hardness is provided.
The ice making technique of the seed ice skating rink is generally used as an ice making technique as shown in FIG.

More specifically, as shown in FIGS. 5 and 6, a concrete frame 3 having a predetermined width and a predetermined thickness in which a trench 1 is disposed at a side portion is formed so that an ice making room 4 is formed at the uppermost portion. The buried part 6, the heat-insulating layer 9, the heat-insulating layer 8, and the concrete cutoff layer 10 of the hairpin-shaped many ice-making coils 5 are formed on the lower part of the stack from the upper side, and the ice-making coil 5 forming the ice-making chamber 4 has the trench 1 As shown in FIG.
, A predetermined number of branches are provided, and brine as a refrigerant is cooled to a predetermined temperature by a refrigerator 12, passed through ice making headers 11, 11 ′ by a brine pump 13, and passed through hairpin-shaped ice making coils 5, 5. A predetermined ice layer 4 ′ is formed in the ice making room 4. The frozen state of the ice layer 4 ′ in the ice making room 4 is determined by a temperature detection sensor 14 facing the outside of the ice making room 4. 4 'is detected, and the detected data is input to a predetermined control device 15 so that the refrigerator 12
Is controlled so as to form an ice layer 4 'having a predetermined hardness by controlling the temperature of the forward and return passages of the brine flowing through the ice making coil 5. .

Reference numerals 16 and 16 denote fences such as partitions and handrails, and 17 denotes a baseboard for protecting the edges of the skating shoes in the ice making room 4.

[0007] The control of the ice skating rink ice making method was extremely simple.

[0008]

The circulation of the brine to the hairpin-shaped ice making coil 5 by cooling the brine to the ice making room 4 of the conventional ice skating rink is performed through the refrigerator 12 in the daytime. From that
The ice layer 4 'in the ice making chamber 4 is generally circulated through a predetermined brine pump 13 for the ice making coil 5 in order to maintain a predetermined hardness of the ice layer 4' because the daytime competition or the like is generally performed. As is well known, there is a drawback that the power consumption in the daytime is extremely high, and thus the running cost is high.

Further, the size of the refrigerator 12 is also large, which makes it difficult to route and connect with the peripheral equipment, and there is a problem in that the facility must be large in size.

[0010] Although the ice skating rink is large in terms of facilities, the ice making headers 11 and 11 '.
The ice making coil 5 which is buried in the concrete frame 3 by branching out a predetermined number from the ice making header 11,
11 ', the ice making coil 5 of the concrete skeleton 3 including the straight pipe portion 51 and the hairpin portion 52 at the tip end is completely complete as shown in FIGS. 5, 6, and 7. Therefore, the length of the ice making coil 5 extending over the straight pipe portion 51 and the hairpin portion 52 at the tip of the embedding portion exceeds several tens of meters. In order to unitize a plurality of the predetermined number of units, a plurality of units cannot be manufactured due to facility relations. Therefore, each single ice making unit is connected from the ice making headers 11 and 11 'through the welding joints 5' and 5 '. Each coil 5 must be constructed in the buried layer 6 of the concrete skeleton 3 in a predetermined network via joint welding. Therefore, the welding joint portion 5 in the straight pipe portion 51 of each ice making coil 5 must be constructed.
In FIG. 6, welding is performed almost completely by automatic welding, but the welding joint portion 5 ″ from the straight pipe portion 51 to the hairpin portion 52 is directly inserted into the buried portion 6 of the concrete frame 3 as shown in FIG. Since the tube portion 51 to the hairpin portion 52 are completely buried, the welding joint work of the welded joint portion 5 ″ from the straight tube portion 51 to the hairpin portion 52 is generally performed from the straight tube portion 51. Because of the complicated shape connected to the hairpin portion 52 and manual welding, the welding joint portion 5
'' Is extremely complicated, requires a high degree of skill, and if welding failure occurs unexpectedly, there is a disadvantage that there is a possibility of occurrence of trouble such as leakage of brine and unexpected situation. Was.

[0011]

SUMMARY OF THE INVENTION An object of the invention of this application is to increase the cost of daytime operation of a refrigerator required for circulating and supplying low-temperature brine to an ice making coil when making ice on an ice skating rink based on the above-mentioned prior art, and to increase the size of the facility. , And
Welding of a straight pipe part when buried in the ice layer part of the ice skating rink in the arrangement part of the hairpin-shaped ice making coil in a state of being fully immersed, and welding of the hairpin part and the welded joint part between the hairpin part and the straight pipe part The technical problem to be solved is to solve problems such as brine leaks caused by defects.In addition to installing a hairpin-shaped ice making link in the upper part near the ice layer in the concrete body, the ice making in the lower part of the ice making coil A predetermined number of pipe-shaped regenerative tubes similar to coils are provided, and a regenerator is provided outside the regenerative tubes, and a low-temperature brine is stored in the regenerative tubes and the regenerator at night with a low electricity rate. In the daytime, which is actually used for sports, etc., circulates through the cold storage tank and cools the ice, and in the daytime, the cold storage tube and / or from the cold storage tank to the upper hairpin-shaped ice making coil via the secondary brine pump. In order to maintain the ice making and maintain the ice of the predetermined hardness in the ice layer, not only can the operating cost be reduced, but also the size and size of the refrigerator and pump can be reduced. The arrangement is easy, the degree of freedom in facility design is enhanced, and the hairpin portion of the cold storage tube and the ice making coil is put out of the trench inside the concrete skeleton, so that the cold storage tube and the ice making coil are directly connected. An excellent ice skating rink ice making method that facilitates welding work of a welded joint between a pipe portion and a hairpin portion, and facilitates maintenance and monitoring, which is beneficial to the application of ice competition technology in the sports industry. It is intended to provide a device for direct use in the method.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the skating rink has a hairpin-shaped skate on the upper part of its concrete body. An ice making coil is buried and connected to an ice making header formed in a trench at the side of the skating rink, and the ice making header is connected to a brine pump, and the brine pump operates at the temperature of the ice making room and the temperature of the brine forward and return passages. An ice skating rink ice making method wherein the amount and temperature of brine supplied are controlled by detection, wherein a predetermined number of cold storage tubes are buried below a hairpin-shaped ice making coil of the concrete skeleton, Cold storage ice-cooling equipment is provided by low-cost electric power at night due to the cold storage and cooling header provided in the main trench outside the above side trench. In the daytime, ice storage is maintained through the hairpin-shaped ice making coil by the cold storage brine of the cold storage tube, and at the same time, the cold storage state of the concrete body is maintained by the cold storage of the cold storage tube. A hairpin-shaped ice-making coil is buried in the upper part of the concrete skeleton of the skating rink, and is connected to an ice-making header formed in a trench at a side of the skating rink; and the ice-making header is connected to a brine pump. A method for making ice in an ice skating rink, wherein a pump is controlled to supply brine by detecting an incoming and outgoing temperature of brine and a return temperature of a brine, wherein a cold storage tube is provided below a hairpin-shaped ice making coil of the concrete body. Is buried in the double line and is disposed in the main trench outside the above side trench The cold storage and cooling header is used to store cold electricity at night with inexpensive electric power, and the cold storage tank connected to the cool storage and cooling cold header stores night brine with the same cheap night electric power. The ice is made optimally through the hairpin-shaped ice-making coil by the cold storage brine, the ice-making state is maintained, and the ice-making state is maintained by the cold storage of the concrete body. A predetermined amount of low-temperature brine stored in the hairpin-shaped ice making coil is supplied to the ice-making coil by the cold storage tube according to the forward and return temperatures of the hairpin-shaped ice making coil. It is controlled in a predetermined manner by detecting the flow temperature, and at the same time, the flow from the cold storage tank to the cold storage tube is controlled. The supply of ins is also stopped by a timer, and the supply of the cold stored brine to the hairpin-shaped ice making coil is suppressed so as to suppress the occurrence of cracks in the ice in the ice making room. A hairpin-shaped ice-making coil buried in the concrete skeleton, and at least one of the regenerator tubes is pulled out so that the hairpin-shaped portion is located in a trench outside the concrete skeleton, and the hairpin is manually welded. The welded joint is made as designed, and only the hairpin-shaped ice-making coil and the straight pipe of the cold storage tube are located in the concrete body, and the cold storage connected to the ice-making header of the ice-making coil Technical measures were taken so that a three-way valve was interposed in the line with the tank.

[0013]

In the above configuration, during the night when power consumption is low, cold brine is stored in a cold storage tube provided below the ice making coil above the concrete body provided between the main trench and the sub-trench via a refrigerator. Circulated by the cold storage / cooling pump via the cooling head, cools the concrete frame, and ice-makes the upper ice layer.During that time, it detects temperature changes in the outward and return routes of the brine to the ice layer. A temperature detection sensor is also provided to prevent the occurrence of cracks and the like in the ice layer portion, and also on the return path of a hairpin-shaped ice-making coil branched in a network from a plurality of ice-making headers provided on the cold storage tube. A predetermined small amount of cold brine is supplied, and the temperature detected by the temperature detection sensor in the ice layer is controlled by the control device with respect to the cold storage tube. Optimal ice making is performed by starting and stopping the supply of the line via inverter control, and in the daytime when a game or the like is performed, the low-temperature brine of the cold storage tube storing cold heat during the night is transferred from the cold storage tube to the hairpin. The ice circulation coil is circulated to maintain an ice layer ice condition of a predetermined hardness so that a predetermined game or the like can be smoothly performed, and the supply circulation start / stop flow rate control of the brine in the cold storage tube is performed by a timer or an inverter control. As a result, the refrigerator can be reduced in size to a small size and a small size, the operation with the surrounding facilities is good, and the operation can be performed at a low cost by the nighttime electricity rate, and The hairpin part of the hairpin-shaped ice making coil and the hairpin part of the cold storage tube go out to the trench outside the concrete body and The operation of the welded joint of the hairpin part by hand is performed smoothly, and there is no danger of occurrence of a leak or the like of the brine from the welded joint part in operation, so that no trouble or the like occurs, and thus the cold storage tube When the capacity of the brine is limited in the circulation of the cold storage / cooling header, and a cold storage tank of a predetermined large-capacity brine for the ice making header is provided outside the ice skating rink, and the cold storage / cooling header for the cold storage tubes is used. Brine is used to cool ice at night with an appropriate amount of inexpensive nighttime electric power by a refrigerator, and ice is formed in the ice layer by brine in the cold storage tubes and cold storage tanks at night, and
Recirculation of brine to the hairpin-shaped ice making link during the night is properly performed, cost can be reduced by an inexpensive nightly power consumption rate, and the ice making state in the ice layer can be maintained at a predetermined hardness regardless of day or night. It is like that.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG.

The embodiment is an embodiment applied to an ice hockey skating rink.

The same parts as those in FIG. 5 and the following are described using the same reference numerals.

In the embodiment shown in FIGS. 1, 2 and 4,
Reference numeral 100 denotes an ice skating rink ice making apparatus which constitutes one of the gist of the invention of the present application, and as shown in FIGS. 1 and 2 (a) and (b), a concrete skeleton 3 'forming a link body. With respect to the main trench 1 and the sub-trench 2 formed on both sides, (c) and (d) of FIG.
As shown in the figure, a hairpin-shaped ice making coil 5 having a hairpin portion 52 at the end formed in an outward shape is attached to an ice making chamber 4 above the hairpin.
Only the straight tube portion 51 is buried in the buried layer 6 below the hairpin portion, and the hairpin portion 52 is made to protrude into the sub-trench 2 and the end of the straight tube portion 51 is connected to the ice making headers 11 and 11 '. Have been.

In the straight pipe portion 51, the welded joints 5 ', 5' are formed by a predetermined unit length by automatic welding. In order to prevent the leakage of brine or the like during operation due to manual welding, it is carefully performed due to the outside state.

A heat storage layer 7 is provided below the buried layer 6 and is connected to the cold storage / cooling headers 11 "and 11""provided in the sub-trench 2. A pipe-shaped cold storage tube 18 is provided, and the hairpin portion 18 ″ in the main trench 1 and the cold storage and cooling header 1 are provided.
In the welded joint portion 5 '' for 1 '''', a detailed manual welded joint portion is formed in the same manner as in the case of the hairpin-shaped ice making coil 5 described above, and is embedded in the concrete frame 3 '. In the straight pipe portion 18 ', the welding joint portion 5' of the connecting portion of the length of the welding unit is formed by automatic welding so that no leak of brine or the like in the heat storage layer 7 is caused.

Under the heat storage layer 7, a heat insulating layer 8,
A heat insulating layer 9 is provided, and a water cutoff layer 10 of concrete is provided below the heat insulating layer 9.

As shown in FIGS. 1 and 2, the cold storage cooling / cooling header 11 'of the cold storage tube 18 attached to the heat storage layer 7 below the ice making chamber 4 above the concrete frame 3'.
', 11''' indicate the temperature sensor 1
4 ′ is connected to the brine pump 13 and the refrigerator 12 through the opening / closing valve 20 via the cold storage / cooling pump 21 so that the cooled brine is circulated to the cold storage tube 18. .

In addition, the ice making headers 11 and 1 '' are branched from the cold storage and cooling pump 21 in front of the cold storage and cooling headers 11 '' and 11 '''' and have a temperature detection sensor 14 '' interposed in the middle.
1 '.

The regenerative cooling pump 21 is an inverter control type pump, which is electrically connected to the control device 15 so as to be controlled by the inverter in a predetermined manner.

Then, the cold storage / cooling headers 11 ", 11"
, And the temperature detection sensors 14 ′, 14 ″ interposed in the ice making headers 11, 11 ′, respectively, and the ice making chamber 4.
Temperature sensor 1 provided near the ice making coil 5
Numeral 4 is electrically connected to the control device 15, and an on-off valve 20 is interposed in the passage between the brine pump 13 and the cold storage / cooling headers 11 ″ and 11 ″ ′. It is electrically connected.

In the above-described ice making plant, first,
In order to store cold using nighttime power, which is cheaper in power usage, brine (cooling temperature is different between daytime and nighttime) cooled to a predetermined temperature by the refrigerator 12 is opened and closed by the brine pump 13. Through the cold storage / cooling pump 21 to the cold storage tube 18 connected to the cold storage / cooling header 11 ″, 11 ″ ′ to reveal the cold storage state, returned to the refrigerator 12 again, In the above, the temperature of the forward and return passages of the cold storage / cooling headers 11 ″, 11 ″ ″ is detected by the temperature detection sensor 14 ′ interposed in the cold storage / cooling headers 11 ″, 11 ′ ″, and the detected temperature is detected. Set temperature,
When the temperature difference between the forward and return passages disappears, the control device 15
To send a stop signal to the refrigerator 12 and the brine pump 13 to stop the operation.

Since it takes a predetermined time to cool the concrete frame 3 ', the cool storage / cooling pump 21 circulates a small amount of brine by inverter control, and a predetermined temperature difference is detected by the temperature detecting sensor 14'. In this case, the refrigerator 12 and the brine pump 13 are started to operate again, and the cold energy is stored.

In the ice making header lines 11, 11 ', only the amount of brine necessary to maintain the ice layer 4' is circulated to the ice making header lines 11, 11 '.

In this manner, the low-cost nighttime electric power is used to cool the ice making chamber 4 through the cold storage tube 18 and the ice making coil 5.
Of the ice layer 4 'and the cold storage of the concrete skeleton 3'.

In the daytime operation when the power rate is high, the on-off valve 20 is closed via the timer 19 and the control device 15, and the cold storage / cooling pump 21 is connected to the cold storage / cooling header 11 '.
The brine which is circulated between the ice making headers 11 and 11 '''and the ice making headers 11 and 11' and is cooled in the cold storage tube 18 in the cold storage state is circulated to maintain the ice making 4 '.

If the temperature difference between the temperature detection sensor 14 ″ and the set temperature is small in the ice making header lines 11, 11 ′, the cold storage / cooling pump 21 is controlled by the control device 15
If the temperature is increased through low speed operation through the inverter control to reduce the amount of brine circulation, and the temperature difference is increased, the amount of brine circulation is similarly increased through the inverter control to maintain the predetermined ice-making state in the ice making chamber 4. The occurrence of cracks on ice is eliminated.

When the amount of cold storage is exhausted, the on-off valve 2
0 is in the open state, and when the temperature detected by the temperature detecting sensor 14 ″ interposed in the ice making headers 11 and 11 ′ becomes higher than the set temperature value, the refrigerator 12. An operation signal is sent to the brine pump 13, and the refrigerator 12 and the brine pump 13 start operating.

As described above, when the electricity rate in the daytime is high, the cooling brine stored in the cold storage tube 18 at night is transferred to the cold storage / cooling headers 11 ″, 11 ′ ″ and the ice making header lines 11, 11 '' Cool storage / cooling pump 21
Via the respective headers 11 ″, 11 ″ ′, 11, 1
In order to maintain a predetermined ice formation state of the ice layer 4 'by circulating through the inverter control through the control device 15 by the temperature detection sensors 14' and 14 '' interposed in the skate 1 ', the skate is inexpensive. The ice making state of the link is maintained at a predetermined hardness.

The temperature detecting sensor 14 installed near the ice making coil 5 includes a timer 19 and a control device 15.
The function of controlling the start and stop of the brine pump 13 through the predetermined is provided.

In the embodiment shown in FIGS. 2 and 3, the concrete skeleton 3 'of the skating rink shown in FIG. 2 is the same as the embodiment described above, but in the embodiment shown in FIG. Cold storage tank 2 in addition to the cold storage tube 18
3 is provided separately to cool the brine 24, so that the cold storage tube 18 can be sufficiently backed up when the cold storage capacity of cold heat is insufficient. Machine 12,12 ...
And brine pumps 13 ″ and 13 ″ are arranged to store cold heat in a predetermined state of cooling the brine 24, and the brine pump 13 of the brine 24 is supplied from the cold storage tank 23 to the cold storage and cooling header. 11 ″, 11 ′ ″, and the secondary brine pumps 13 ′, 13 ′,... Are interposed on the lines 11, 11 ′ of the ice making header via a three-way valve 25. What is different.

In this embodiment, the ice layer 4 of the ice making room 4 is stored by the cold storage of the skating rink using the nighttime electric power having a low electric power rate.
In order to carry out the heat storage for the production of 'and the cold storage of the concrete skeleton 3', first, the brine 24 is cooled to a predetermined temperature by the refrigerators 12, 12, ... and the brine pump 13 ", and stored in the cool storage tank 23. You.

Then, the brine pump 13 is set in a continuous operation state, and when the difference between the temperatures detected by the temperature detecting sensors 14 'provided in the reciprocating passage of the brine in the cold storage tube 18 is large, the brine pump 13 is operated. Is increased by the inverter control via the control device 15 and the amount of the brine 24 is circulated, and when the temperature difference disappears, the number of rotations is reduced or stopped by the inverter control and the brine 24 is stopped. The flow rate is lower.

In this way, the ice quality of the ice layer 4 'is controlled and the power consumption is reduced, so that the ice layer 4' of the ice making room 4 is produced and the concrete frame 3 'is cooled while saving energy.

The timer 19, together with the temperature detection sensor 14 provided in the vicinity of the ice making coil 5, transmits on / off signals during the nighttime operation of the refrigerator 12 and the brine pump 13 '' via the control device 15, and outputs a secondary signal. The brine pump 13 'detects the temperature of the ice making chamber 4 by detecting a temperature difference by a temperature detecting sensor 14''interposed in the lines 11 and 11' of the ice making header.
Control the flow rate.

The three-way valve 25 maintains the ice quality by controlling the brine temperature to an optimum temperature for controlling the ice quality of the ice layer 4 '.

As described above, since the refrigerators 12, 12... And the brine pumps 13 ″, 13 ″. The ice layer 4 'in the ice making room 4 and the cold storage of the concrete skeleton 3' can be maintained for a fee.

During operation in the daytime when the power rate is high, the brine pump 13 is connected to the cold storage tube 18.
The stored cold heat is transferred to the cold storage tank 23 by circulation of the brine, and the secondary brine pump 13 'is connected to the temperature detecting sensor 14''interposed in the lines 11 and 11' of the ice making header.
In addition, the flow rate of the brine is adjusted by an inverter control via a control device 15 by a temperature detection sensor 14 disposed in the vicinity of the ice making coil 5 by means of an inverter 15 to circulate and make ice.

In this case, the three-way valve 25 is connected to the ice making header 1.
The temperature of the ice-making chamber 4 is controlled by controlling the temperature of the pump supply by detecting the temperature of the temperature detecting sensor 14 ″ interposed between the ice making coils 1 and 11 ′ and the temperature detecting sensor 14 disposed near the ice making coil 5. Control the ice layer 4 '.

When the cooling capacity of the cold storage tank 23, the cold storage tube 18, and the concrete frame 3 'is reduced or lost during the daytime operation, the refrigerators 12 and 1 are not used.
And the brine pumps 13 ″, 13 ″ are operated at the set daytime brine temperature (the brine temperature is set to be different between cold storage at night and daytime).

As described above, in this embodiment, when the cold storage tube 18 of the above-described embodiment has insufficient cold storage capacity, the cold storage heat is maintained at a predetermined level due to the fact that the brine 24 of the cold storage tank 23 is backed up as a backup. In addition, it is possible to maintain the replenishment of the cold of the brine at low cost.

In this embodiment, as shown in FIGS. 4C and 4D, the hairpin portions 52 and 18 ″ of both the ice making coil 5 and the cold storage tube 18 are used.
Is located on the side of the main and sub trenches, so that the welding work of the welded joint portion 5 ″ requiring precision is performed extremely precisely by hand, and the leakage of brine during operation is avoided. Welded joint part 5 'in parts 51, 18'
Is performed by automatic welding, and there is no possibility that any leak of brine or the like occurs.

The embodiments of the invention of this application are not limited to the above-described embodiments. For example, the temperature detecting sensor is provided in the ice-making link zone in a hairpin shape, and is also provided in the cold storage tube zone. For example, various modes such as controlling the cold heat storage of each hairpin-shaped ice making coil and the cold storage tube can be adopted.

As a design change, it is needless to say that the timer can be changed to change the time between day and night, and it can be adjusted according to the seasonal fluctuation of the electricity rate between day and night. is there.

It should be noted that the ice skating rink of the application mode can be applied not only to an ice hockey rink but also to a speed skating rink, a figure skating rink and the like.

The size of the regenerative tube relative to the ice making coil, such as large, small, etc., is within the scope of design change.

[0050]

As described above, according to the invention of this application, when producing and maintaining ice in an ice layer of an ice skating rink in a substantial area basically used for ice competitions such as ice hockey and speed skating, When circulating the brine to the hairpin-shaped ice making coil, a cold storage tube is provided in a hairpin shape below the concrete frame in which the hairpin-shaped ice making coil is buried, and connected to the cold storage / cooling header to circulate the coolant brine. By making cold ice storage and making ice, electric power used in the refrigerator is fully used at a low price at night and cold storage by the cold storage tube is aimed at, and cold storage of the concrete frame is aimed at, such as competition. In the daytime for use, circulate the cooling brine of the cold storage tube to a hairpin-shaped ice making coil. By the essentially finished without costly daytime electricity rates, the running cost can be exhibited an excellent effect that significantly cheaper.

Further, by providing the cold storage tube in the concrete body in a manner embedded in the lower part of the ice making coil, the thickness of the concrete body is increased by that amount, and the heat capacity of the cold heat storage of the concrete body is increased. The temperature of ice produced in the ice layer above the concrete frame can be prevented from rising to a high temperature, and the rate of heat conduction between the concrete frame and the ice layer can be reduced. An excellent effect that cracks of ice in the layer can be prevented is exhibited.

If the capacity of the cold storage tubes is insufficient and the ice making of a large area skating rink is insufficient, a cold storage tank of brine is prepared in addition to the cold storage tubes, and the cold storage tanks are used at night. The brine is cooled and stored via a refrigerator at an inexpensive night rate, and in the daytime competition, the cold storage tube and the low temperature brine in the cold storage tank are supplied through a three-way valve to a predetermined amount of a hairpin-shaped ice making coil. To maintain ice making of a predetermined hardness, and as a result, power consumption can be reduced by about 30% on average.Moreover, the temperature change of ice making is prevented and cracks are prevented, and smooth and safe The excellent effect that ice competitions are held is exhibited.

In addition, since low-temperature brine can be circulated through a cold storage tube or a cold storage tank at a low electricity rate at night to store cold heat, the operation efficiency of the refrigerator can be reduced. An excellent effect is achieved in that the refrigerator can be made more compact and smaller in size, and the degree of freedom in designing the connection with peripheral equipment can be increased.

Thus, the temperature of the ice in the ice layer is detected by the temperature detection sensor, and the refrigerator or the brine is used by using the cheap night rate without using the expensive daytime power consumption via the control device together with the timer. Since the pump can be operated, the temperature detection sensor, the timer, the control device, and the like can be manufactured by using a conventional technique well known to those skilled in the art. There is an advantage that assembly is very easy.

Further, since the on-off valve can be manually operated, there is also an effect that an operator or a monitor can operate the on-off valve to be in an optimum operating state as needed.

Thus, in the device invention of the present invention, a straight-line portion of a hairpin-shaped ice making link or a cold storage tube is buried inside the concrete skeleton, and many hairpin portions go out to a trench outside the concrete skeleton. Because of this, automatic welding can be used to weld the welded joint of the straight pipe part of unit length in each straight pipe part, and the hairpin part needs to be detailed and precise. Since the welded joints to be welded are manually welded, the welding at all the welded joints is performed with high precision, so that there is no occurrence of brine leakage during operation, and therefore the durability of the ice skating rink. The advantage is that the maintenance cost is not high.

Further, since the three-way valve is interposed in the line connecting the cold storage tube and the cold storage tank to the ice making header of the ice making coil, the cold stored cold heat can be obtained regardless of day and night. The brine in the heat storage state is intermittently circulated throughout the entire ice layer, so that there is no risk that cracks will occur in the ice made on the ice layer, the quality of the ice is improved, and the player's quality is improved. The excellent effect that the competition is exhibited to the maximum is achieved.

As described above, according to the invention of the present application, when producing and maintaining ice in ice skating rinks having a considerable area, a huge amount of electricity is used, and the cost of electricity is increased. Fully utilizing the cold storage heat storage method, the expensive daytime electricity charges can be used by circulating a predetermined amount of cold storage tubes and cooling brine in the cold storage tank through the hairpin coil for use. In addition to the production and maintenance of the same ice layer as the conventional ice skating rink, there is an effect that the cost is low, and since the refrigerator is downsized accordingly,
In addition to the effect that facilities are well connected with peripheral equipment, the degree of freedom in design is increased, and the hairpin part of the ice making coil and the cold storage tube is made to go out to the trench outside the concrete body and the welding joint at the hairpin part By manual welding, precise welding is performed with high accuracy,
Moreover, since the straight pipe portion is buried in the concrete body, the welded portion of the straight pipe portion is smoothly performed by automatic welding or the like, and therefore, the entire ice making coil and the weld joint of the cold storage tube are formed. The part is completely designed as designed, which prevents the leakage of brine during operation and the like, the function of the ice skating rink is maintained over time, and the reliability is enhanced.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a brine flow of a skating rink according to an embodiment of the present invention.

FIG. 2A is a schematic sectional view of the skating rink, and FIG. 2B is a partial longitudinal sectional view of the same.

FIG. 3 is a schematic plan view of another embodiment of the brine flow of the invention of this application.

FIG. 4 (c) is a schematic plan view of a connection of an ice making header of a hairpin-shaped ice making coil and a welded joint portion,
(D) is a schematic plan view of a joint portion of the cold storage tube of the cool storage tube and the welded joint portion of the hairpin portion and the straight pipe portion in the trench.

FIG. 5 is a schematic longitudinal enlarged view of the concrete skeleton.

FIG. 6 is a schematic sectional view of an ice skating rink in the conventional mode.

FIG. 7 is a schematic plan view of a brine flow of an ice skating rink in a conventional mode.

[Explanation of symbols]

 100,100 'Skating rink 3,3' Concrete frame 51 Ice-making coil 1 Main trench 2 Sub-trench 11,11 'Ice-making header 13' Brine pump 4 Ice-making room 18 Cold storage tubes 11 ", 11 '" Cold storage and cooling header 23 Cool storage tank 24 Brine 4 'Ice layer 14, 14', 14 '' Temperature detection sensor 19 Timer 52, 18 '' Hairpin 5 ', 5' 'Weld joint 25 Three-way valve

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[Procedure amendment]

[Submission date] December 4, 1997

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 5

FIG. 6

FIG. 7

FIG. 2

FIG. 3

FIG. 4

Claims (9)

[Claims] A skating rink has a hairpin-shaped ice making coil buried in the upper part of its concrete body, and is connected to an ice making header formed in a trench at the side of the skating rink, and the ice making header is connected to a brine pump. Wherein the brine pump is controlled to be controlled by the temperature of the ice making chamber and the temperature at which the brine goes back and forth. A plurality of cold storage tubes are buried in the lower part of the hairpin-shaped ice making coil, and the cold storage ice is stored at night by the cold storage and cooling header arranged in the main trench outside the side trench. In the daytime, the cold storage tubes of the above-mentioned cold storage tubes are kept in the cold storage condition of the concrete frame. Ice rink ice making method by circulating, characterized in that it is to be ice through the hairpin-shaped ice making coils. 2. A skating rink, wherein a hairpin-shaped ice making coil is buried in the upper part of the concrete body, and is connected to an ice making header formed in a trench at the side of the skating rink, and the ice making header is connected to a brine pump. Wherein the brine pump is controlled by the temperature of the ice making chamber and the temperatures of the brine going and returning passages. A plurality of cold storage tubes are buried under the hairpin-shaped ice making coil of the skeleton, and ice is stored and stored at night by the cold storage and cooling header provided in the main trench outside the above-mentioned trench, and at the same time, the cooling and heating of the concrete skeleton The ice storage state is maintained by the cold storage, and the cold storage tank connected to the cold storage and cooling header is stored in the cold storage tank at night. Ice rink ice making method characterized by brine is to be ice through the hairpin-shaped ice making coils by the circulation of cold storage brine regenerator has been daytime cold accumulation tank and the cold accumulation tube. 3. The ice-making layer formed by the night-time cold storage tube, wherein a small amount of low-temperature brine stored in a hairpin-shaped ice-making coil is supplied to the ice-making coil. Ice skating rink ice making method. 4. The ice skate according to claim 1, wherein when the low-temperature brine stored in the hairpin-shaped ice making coil is replenished, the flow rate thereof is controlled by a detected temperature. Link ice making method. 5. The ice skating rink ice making method according to claim 2, wherein the supply of the brine from the regenerator to the regenerator tube is stopped by a timer. 6. The ice skating rink according to claim 1, wherein replenishment of the cold-stored brine to the hairpin-shaped ice making coil suppresses the occurrence of ice cracks in the ice making room. Ice making method. 7. A skating rink, wherein a hairpin-shaped ice-making coil is buried in the upper part of the concrete skeleton, connected to an ice-making header formed in a trench on the side of the skating rink, and the ice-making header is connected to a brine pump. An apparatus for use in an ice skating rink ice making method in which the brine pump is controlled by detecting the temperature of an ice making chamber and controlling the temperature of the brine going and returning paths. An ice skating rink ice making device, characterized in that at least one of the coil and the cold storage tube has a hairpin-like portion located in a trench outside the concrete body. 8. An ice skating rink according to claim 7, wherein at least one of the hairpin-shaped ice making coils and the cold storage tube has at least one hairpin located in a trench outside the concrete body. apparatus. 9. A three-way valve is interposed in a line between the ice-making coil and a regenerator connected to the ice-making header, and the supply temperature of the brine can be arbitrarily set by the three-way valve. The ice making device according to claim 7.