JPS5813254Y2 - skating rink - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an indirectly cooled skating rink in which links are formed using link cooling pipes having different cooling coil lengths and connected in a reverse return manner.

In general, skating rink piping equipment using link cooling pipes is determined by taking into account the length, width, brine flow velocity, pressure drop, etc. of the link, and the method of arranging the cooling pipes is based on the direction of brine flow. It is known that the headers at the entrance and exit are placed on both sides of the link, the headers are placed on the same side of the link, and the headers are placed in the center of the link, all of which are shown in Figure 1. In a link facility that has an elliptical shape, a circular shape, or a circular part, the lengths of the cooling pipes are different in parts A, B, and C, so the internal resistance of the cooling pipes is different, and the brine flow rate is are the same in part B, but in parts A and C
Due to the different flow rates in different parts of the skating rink, the water does not flow uniformly, resulting in temperature differences on the cooling surface of the rink, and the water surface has different water quality in some parts, which is an undesirable drawback in terms of the nature of the skating rink.

For this reason, in the past, in link piping with cooling coils of different lengths, it was necessary to make the pipe diameters of the cooling coils different or to provide some kind of resistance as a means of making the resistance uniform. However, the piping equipment is complicated and has manufacturing problems, is costly, and is inconvenient in terms of maintenance and safety as well as troublesome operation management.

The present invention attempts to accurately eliminate these conventional drawbacks, and even in link equipment having cooling coils of different lengths with the same fluid resistance per unit length, the brine flow rate and flow velocity are uniform or approximated for cooling. The purpose is to provide a skating rink with a simple configuration and at low cost, which can uniformize the surface temperature and stabilize the ice temperature over the entire surface of the rink.

In this invention, a large number of cooling coils made of pipes of the same diameter that have the same fluid resistance per unit length and which flow through brine are arranged horizontally in parallel on the floor at intervals, and links of a predetermined area are created by combining parts of different areas. In a skating rink in which each cooling coil is connected by a header for communication using a reverse return method, each group of short cooling coils forming an area smaller than the maximum area of the link is connected to the maximum area of the link. By connecting the header section at a position to compensate for the insufficient length to make the length equal to the maximum length of the cooling coil in the area section, the flow rate and flow velocity in the cooling coil are substantially uniform even in cooling coils of different lengths. This skating rink is characterized by its piping structure.

An embodiment of the present invention will be explained with reference to FIG. 2 regarding the piping system of an indirect cooling type skating rink having cooling coils of different lengths.
are arranged horizontally in parallel on the floor at intervals, and a link of a predetermined area is constructed from a part including the circular areas A and C and a rectangular area B such as a rectangle in the same area, and each of these cooling Coils 1 and 1' are connected to brine inlet header 2 and outlet header 3.
and connected in a reverse return manner to the rectangular area part B.
The cooling coils 1 are a uniform pipe group with the maximum length, and non-uniform cooling coils 1' groups shorter than this length are respectively arranged in the circular areas A and C, and the short and short lengths are used as pipes for the inflow header 2 and the outflow. A brine supply pipe 4 and a brine return pipe 5 are connected so that the brine contained in the header 3 is supplied and discharged by bypass.

Steel pipes or synthetic resin pipes are used as the cooling coils 1 and 1', and the pipes have uniform diameters with the same fluid resistance per unit length, and the brine flows in the same direction or in opposite directions every other pipe. In order to maintain a smooth water surface, the reverse return method was used to equalize the flow rate and velocity of each cooling coil of different length, thereby stabilizing the ice temperature over the entire surface of the telelink.

That is, when the link area shape increases or decreases, the lengths of the cooling coils arranged are different, and even if they are connected to the inflow header 2 and outflow header 3, the brine population 6 and brine outlet lower of each inflow header 2 and outflow header 3 are different. All the cooling coil groups 1 and 1' are arranged so that they have substantially the same resistance over the distance from the brine to the brine inflow and outflow.

For example, when using the same pipe diameter, it can be easily constructed by making the length from the brine port 6 to the brine outlet lower approximate, including the cooling coil.

Each inflow header 2 and outflow header 3 of the brine inlet/outlet
are arranged side by side on the same side of the link, but they can also be arranged separately on both sides of the link, or in the center of the link.

Further, the length of the cooling coil 1' disposed toward at least one end or both ends or a plurality of ends of the skating rink where the cooling coil 1' has different lengths is gradually reduced to form circular areas A and C. However, the links are not limited to elliptical or circular shapes, but can also be formed into other shapes such as triangular, polygonal, or rectangular shapes. The piping system is designed to keep the flow rate (flow velocity) constant in order to equalize the flow rate.

With this invention, the flow rate and flow velocity are made uniform, and as a result, the temperature of the cooling surface is made uniform, and the ice temperature is made uniform, making it possible to easily maintain a homogeneous water surface over the entire surface of the skating rink. As for the different rink equipment, the skating rink equipment is simplified without using extremely complicated means, it is easy to manufacture, it is simplified without causing any problems in operation management, and it is an extremely economical rink. It has practical effects that can be used as equipment.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a conventional example, and FIG. 2 is a plan view showing an embodiment of the present invention. 1.1'... Cooling coil, 2... Inflow header, 3... Outflow header, 4... Brine supply pipe, 5...・Brine return pipe, 6...
...Brine inlet, 7...Brine outlet.

Claims (1)

[Scope of utility model registration request] 1. A large number of cooling coils of the same pipe diameter vibrator with the same fluid resistance per unit length and flowing brine are arranged horizontally in parallel on the floor at intervals, and a link of a predetermined area is constructed by combining parts with different areas. In a skating rink in which cooling coils are connected by a communication header using a reverse return method, a group of short cooling coils forming an area smaller than the maximum area of the link is the cooling coil of the maximum area of the link. By connecting the header section to compensate for the insufficient length to make the length equal to the maximum length of the piping, even if the length of the cooling coil is different, the flow rate and flow velocity within the cooling coil will be substantially uniform. A skating rink characterized by its composition. 2. The skating rink according to claim 1, wherein the cooling coils are arranged in positions that form the same plane to keep the water surface smooth. 3. The skate according to claim 1 or 2, wherein the headers are arranged side by side on the same side of the link and have substantially the same length including the cooling coil. Link. 4. Utility model registration claim 1, 2 or 3, wherein the cooling coil has a coil length that forms at least one end of the skating rink into a circular area.
Skating rink mentioned in section. 5. The header includes a brine supply pipe and a brine return pipe, and the sum of the lengths of the brine supply pipe, brine return pipe, and cooling coil is equal to each other for each cooling coil. A skating rink according to claim 2, 3, or 4 of the utility model registration claim.