A self-standing portable ice skating rink structure that does not penetrate the underlying surface and generally requires no tools or hardware for installation is provided. The ice skating rink structure includes a perimeter component and one or more tension members. The perimeter component can include one or more board holding members and/or one or more optionally interlocking side boards.

A refrigeration system for an outdoor ice skating rink includes a first heat exchanger that has a first conduit therein and is located outdoors. The first conduit has a first inlet and a first outlet and is configured to discharge heat to the outdoor ambient air. The refrigeration system includes a second heat exchanger that has a second conduit therein, and is in thermal communication with water in the ice skating rink. The second conduit has a second inlet and a second outlet and is configured to absorb heat from the water. The second outlet is in fluid communication with the first inlet via a warm-side conduit. The first outlet is in fluid communication with the second inlet via a cold-side conduit. One or more conveying devices are located in a closed loop that includes the first and second conduits, the warm-side conduit, and the cold-side conduit.

A modular assembled artificial skating rink includes a refrigerating system, a plurality of liquid-supply main pipes and air-return main pipes in the same pipe line as the liquid-supply main pipes. The liquid-supply main pipes communicate with a liquid-supply header pipe. The air-return main pipes communicate with an air-return header pipe. The liquid-supply header pipe communicates with a refrigerant-fluid outlet of the refrigerating system through at least a liquid-supply standpipe. The air-return header pipe communicates with an air-recovery end of the refrigerating system through at least an air-return standpipe. Each liquid-supply main pipe is sheathed in a corresponding air-return main pipe, forming a plurality of groups of sleeve main pipes. The artificial skating rink is divided into different modular regions. Each of the regions has sleeve manifolds and ice-making pipes. Each liquid-supply main pipe has a refrigerant-fluid control valve bank, and each air-return main pipe has an air control valve bank.

A grass ski carpet, comprising a plurality of spiral grass assemblies arranged regularly, wherein each spiral grass assembly comprises: a plurality of row brushes arranged in a same direction, wherein each row brush comprises a base bar and multiple pieces of spiral grass, the multiple pieces of spiral grass are spaced apart and fixedly connected to a first surface of the base bar, the multiple pieces of spiral grass are arranged in a same direction, each of the multiple pieces of spiral grass has a grass tip, a grass stem, and a grass root, the grass stem is curved, the grass tip is bulbous, and rotation directions of all the multiple pieces of spiral grass are same; and a base plate fixedly connected to each of the multiple row brushes through a detachable structure, so that the multiple row brushes are arranged on a surface of the base plate.

A grass ski carpet, comprising a plurality of spiral grass assemblies arranged regularly, wherein each spiral grass assembly comprises: a plurality of row brushes arranged in a same direction, wherein each row brush comprises a base bar and multiple pieces of spiral grass, the multiple pieces of spiral grass are spaced apart and fixedly connected to a first surface of the base bar, the multiple pieces of spiral grass are arranged in a same direction, each of the multiple pieces of spiral grass has a grass tip, a grass stem, and a grass root, the grass stem is curved, the grass tip is bulbous, and rotation directions of all the multiple pieces of spiral grass are same; and a base plate fixedly connected to each of the multiple row brushes through a detachable structure, so that the multiple row brushes are arranged on a surface of the base plate.

A self-standing modular structure support is provided for a self-standing structure having a perimeter component. The self-standing structure support comprises a first member, the first member comprising a perimeter component receiving portion; a second member, being disposed, during use of the self-standing modular structure, in a generally horizontal plane, the second member extending, during the use, outwardly from an exterior surface of the perimeter component; and a third member, the third member being configured to detachably connect the first member to the second member; the first member being supported, during the use, on the second member; the support being configured to support the perimeter component without use of straps and without use of ground engaging projections when the perimeter component is received within a perimeter component receiving portion of the first member. The perimeter component can comprise a plurality of side panels. The structure can further support floor tiles.

A self-standing portable ice skating rink structure that does not penetrate the underlying surface and generally requires no tools or hardware for installation is provided. The ice skating rink structure includes a perimeter component and one or more tension members. The perimeter component can include one or more board holding members and/or one or more optionally interlocking side boards.

A liquid cooling system for an outdoor ice forming surface provides a geothermal heat pump that has a refrigeration circuit with a compressor that is disposed between a cold tube section and a hot tube section. An outdoor structure has an upward facing ice forming surface that is configured to retain a body of ice, where a coolant line is provided at or near the ice forming surface. A fluid pump is coupled with the coolant line and is configured to circulate liquid through the coolant line and over the cold tube section of the geothermal heat pump to dispense heat before being recirculated to the ice forming surface of the outdoor structure.

A self-standing portable ice skating rink structure that does not penetrate the underlying surface and generally requires no tools or hardware for installation is provided. The ice skating rink structure includes a perimeter component and one or more tension members. The perimeter component can include one or more board holding members and/or one or more optionally interlocking side boards.

The present invention discloses a hockey flooring tile having a top smooth surface for passing pucks and one or more interconnecting mechanisms allowing for an interconnection with another tile. A locking mechanism is also positioned within the interconnecting mechanism allowing for a tile to be locked to another tile. The tile disclosed in the present invention also has a bottom surface having support points to support a tile when a weight is placed on the tile.