초록 ▼

An apparatus and method is provided for precipitating water ice or CO.sub.2 snow downwardly over a load within a shipping container or semitrailer body. The apparatus and method utilize high pressure and high velocity fog-like spray discharges of liquid CO.sub.2 and water (for forming water ice) or

An apparatus and method is provided for precipitating water ice or CO.sub.2 snow downwardly over a load within a shipping container or semitrailer body. The apparatus and method utilize high pressure and high velocity fog-like spray discharges of liquid CO.sub.2 and water (for forming water ice) or opposing high pressure and high velocity fog-like spray discharges of liquid CO.sub.2 (for forming CO.sub.2 snow) for intimate commingling in an elevated area of the container or semitrailer body. The commingling fog-like jet discharges of water and liquid CO.sub.2 cause water ice precipitation downward over a load within the container or semitrailer body and are capable of producing ice at a rate (poundage) equal to generally 96% of the rate (poundage) at which liquid CO.sub.2 is consumed in forming the water ice. Further, the opposing and commingling high pressure and high velocity fog-like spray discharges of liquid CO.sub.2 cause CO.sub.2 snow to form and to precipitate downward over an associated load.

대표청구항 ▼

[ What is claimed as new is as follows:] [1.] In combination with an elongated, closed and intermittently ventible container having upstanding opposite side walls and a top wall extending between and interconnecting upper margins of said side walls, a pair of delivery pipes mounted generally horizon

[ What is claimed as new is as follows:] [1.] In combination with an elongated, closed and intermittently ventible container having upstanding opposite side walls and a top wall extending between and interconnecting upper margins of said side walls, a pair of delivery pipes mounted generally horizontally in said container adjacent said top wall and extending longitudinally of said container, one of said delivery pipes including longitudinally spaced first fog-like spray jet discharge means for liquid CO.sub.2, the other of said delivery pipes including longitudinally spaced second fog-like spray jet discharge means for discharging fog-like spray jets of water, said first and second jet discharge means being positioned relative to each other for intimate commingling of said fog-like jets, said one delivery pipe being adapted to be communicated with a source of liquid CO.sub.2 under pressure of at least substantially 250 psi and at a temperature of about -110.degree. F., the other of said delivery pipes being adapted to be communicated with a supply of water under pressure of at least substantially 250 psi.