A cooling member for a mobile ice rink includes a plurality of pipes for transporting a coolant, wherein the pipes comprise at least two sections coupled by a connector. Cooling elements are provided at the locations of the connectors.

A cooling member for a mobile ice rink includes a plurality of pipes for transporting a coolant, wherein the pipes comprise at least two sections coupled by a connector. Cooling elements are provided at the locations of the connectors.

An ice resurfacing sled adapted to be displaced over an ice surface for resurfacing the ice surface is disclosed. The ice resurfacing sled includes an enclosure adapted to slide over the ice surface. The enclosure includes a first longitudinal end and a second longitudinal end. The ice resurfacing sled also includes a torch mounted on the enclosure and extending partially inside the enclosure and adapted to heat an air inside the enclosure by burning a combustible gas to partially melt ice of the ice surface into water. Additionally, the ice resurfacing sled includes an absorbent pad attached to the enclosure and adapted to absorb the water from the ice surface. The ice surface is resurfaced due to melting of ice present on the ice surface as the enclosure is displaced over the ice surface.

A CO.sub.2 refrigeration system for an ice-playing surface comprises an evaporation stage in which heat is absorbed from an ice-playing surface. CO.sub.2 compressors in a compression stage compress CO.sub.2 refrigerant subcritically and transcritically. A gas cooling stage has a plurality of heat-reclaim units reclaiming heat from the CO.sub.2 refrigerant. A pressure-regulating device is downstream of the gas cooling stage, to control a pressure of the CO.sub.2 refrigerant in the gas cooling stage. A reservoir is downstream of the pressure-regulating device for receiving CO.sub.2 refrigerant in a liquid state. A controller operates the pressure-regulating device to control the pressure of the CO.sub.2 refrigerant in the gas cooling stage as a function of the heat demand of the plurality of heat-reclaim units, the controller causing the pressure of the CO.sub.2 refrigerant to reach a transcritical level as a function of a heat demand of the plurality of heat-reclaim units.

A CO.sub.2 refrigeration system for an ice-playing surface comprises an evaporation stage in which heat is absorbed from an ice-playing surface. CO.sub.2 compressors in a compression stage compress CO.sub.2 refrigerant subcritically and transcritically. A gas cooling stage has a plurality of heat-reclaim units reclaiming heat from the CO.sub.2 refrigerant. A pressure-regulating device is downstream of the gas cooling stage, to control a pressure of the CO.sub.2 refrigerant in the gas cooling stage. A reservoir is downstream of the pressure-regulating device for receiving CO.sub.2 refrigerant in a liquid state. A controller operates the pressure-regulating device to control the pressure of the CO.sub.2 refrigerant in the gas cooling stage as a function of the heat demand of the plurality of heat-reclaim units, the controller causing the pressure of the CO.sub.2 refrigerant to reach a transcritical level as a function of a heat demand of the plurality of heat-reclaim units.

A CO.sub.2 refrigeration system for an ice-playing surface comprises an evaporation stage in which heat is absorbed from an ice-playing surface. CO.sub.2 compressors in a compression stage compress CO.sub.2 refrigerant subcritically and transcritically. A gas cooling stage has a plurality of heat-reclaim units reclaiming heat from the CO.sub.2 refrigerant. A pressure-regulating device is downstream of the gas cooling stage, to control a pressure of the CO.sub.2 refrigerant in the gas cooling stage. A reservoir is downstream of the pressure-regulating device for receiving CO.sub.2 refrigerant in a liquid state. A controller operates the pressure-regulating device to control the pressure of the CO.sub.2 refrigerant in the gas cooling stage as a function of the heat demand of the plurality of heat-reclaim units, the controller causing the pressure of the CO.sub.2 refrigerant to reach a transcritical level as a function of a heat demand of the plurality of heat-reclaim units.

A CO.sub.2 refrigeration system for an ice-playing surface comprises an evaporation stage in which heat is absorbed from an ice-playing surface. CO.sub.2 compressors in a compression stage compress CO.sub.2 refrigerant subcritically and transcritically. A gas cooling stage has a plurality of heat-reclaim units reclaiming heat from the CO.sub.2 refrigerant. A pressure-regulating device is downstream of the gas cooling stage, to control a pressure of the CO.sub.2 refrigerant in the gas cooling stage. A reservoir is downstream of the pressure-regulating device for receiving CO.sub.2 refrigerant in a liquid state. A controller operates the pressure-regulating device to control the pressure of the CO.sub.2 refrigerant in the gas cooling stage as a function of the heat demand of the plurality of heat-reclaim units, the controller causing the pressure of the CO.sub.2 refrigerant to reach a transcritical level as a function of a heat demand of the plurality of heat-reclaim units.

An ice making machine set and refrigeration system, the ice making machine set comprising: a vertical liquid reservoir, which has a liquid inlet port and an air outlet port and a lower positioned liquid outlet port, a refrigeration compressor, an oil separator and an oil reservoir; an inhalation valve is coupled between the vertical liquid reservoir and the refrigeration compressor; the refrigeration compressor, the oil separator and the oil reservoir connect sequentially; a throttle valve is coupled to the liquid inlet port; the ice making machine set also comprising a valve to control the liquid outlet port. By means of vertical liquid reservoir, the static pressure of the refrigerant liquid may be increased so as to reduce cavitation of the pump, it will reduce the quantity of lubricant charged in the refrigerant may be reduced.

The present invention relates to a covered artificial skating rink (1) made up of a closed building built over a slab (5) intended to be covered with ice, characterised in that the skating rink (1) comprises: a refrigeration device (9) connected to a refrigerant network (11) in which a refrigerant fluid circulates; a phase-change material (13) connected to said refrigeration device (9) via the refrigerant network; the phase-change material (13) being configured to keep the ice (7) covering the slab at a temperature below the melting temperature of the ice.

The present invention relates to a covered artificial skating rink (1) made up of a closed building built over a slab (5) intended to be covered with ice, characterised in that the skating rink (1) comprises: a refrigeration device (9) connected to a refrigerant network (11) in which a refrigerant fluid circulates; a phase-change material (13) connected to said refrigeration device (9) via the refrigerant network; the phase-change material (13) being configured to keep the ice (7) covering the slab at a temperature below the melting temperature of the ice.