Frigoscandia Equipment Ab

Ingenjorsfirman Per-Oskar Persson Ab

Frigoscandia Equipment Aktiebolag

John Bean Technologies Corporation

Per-Oskar Persson

Hangkan Ohlsson

Ketil Haugen

John R Strong

Ingemar Froderberg

Ulf Wittander

A refrigeration system comprises a compressor, a condenser, a receiver and an evaporator, each having an inlet and an outlet, and a separator having an inlet and a first and second outlet, connected to each other conventionally. The separator is positioned laterally of the evaporator and closer thereto than to the compressor. A controller ensures overfeed of the evaporator by regulating the feed rate of liquid refrigerant from the receiver such that the separator is feeding the evaporator with liquid refrigerant in proportion to demand and safeguarding the desired overfeed. The separator comprises a cylindrical container having two outlets and an inlet for separating the vapor and liquid components of a refrigerant. The inlet is directed tangentially into the cylindrical container. A foraminous partition is positioned inside the container and extends downwardly of the inlet and inwardly of the inner surface of the container for delimiting the central space and the peripheral space of the container from each other.

Refrigeration system and a separator therefor

A freezer for a liquid in a receptacle (14) comprises a housing (1), containing a cooling battery (5) for cooling a gas, a means (7) for generating a flow of the cooled gas and a jet device. The latter comprises a plurality of shells (6), each completely surrounding a receptacle (14) inserted into the respective shells with the exception of a first opening (15) for inserting the receptacle and a second opening (16) for discharging a flow of gas resulting from jets directed towards the outside of the receptacle. Each shell (6) has holes (18) in all its side walls in areas directly opposite a receptacle inserted into the shell for directing jets towards the outside of the receptacle. In addition, the freezer has indicators (11) for indicating which shells (6) do not contain a receptacle (14) and for indicating when the liquid in a receptacle inserted into a shell is frozen.

Freezer for a liquid

A refrigeration system comprises a compressor, a condenser, a receiver and an evaporator, each having an inlet and an outlet, and a separator having an inlet and a first and a second outlet, connected to each other conventionally. The separator is positioned laterally of the evaporator and closer thereto than to the compressor. A controller ensures overfeed of the evaporator by regulating the feed rate of liquid refrigerant from the receiver such that the separator is feeding the evaporator with liquid refrigerant in proportion to demand and safeguarding the desired overfeed. The separator comprises a cylindrical container having two outlets and an inlet for separating the vapor and liquid components of a refrigerant. The inlet is directed tangentially into the cylindrical container. A foraminous partition is positioned inside the container and extends downwardly of the inlet and inwardly of the inner surface of the container for delimiting the central space and the peripheral space of the container from each other.

An apparatus for gas treatment of products, especially food products, comprises a housing having an inlet opening and an outlet opening. A conveyor belt transports the products through the housing along a path from the inlet opening to the outlet opening. A tunnel encloses the conveyor belt at least along a part of the path from the inlet opening to the outlet opening, and has a perforated top wall. Gas suction means communicates with the tunnel for creating a vacuum in the interior of the tunnel. Gas conditioning means conditions the gas circulated by the gas suction means from the interior of the tunnel to the exterior thereof and back to the interior of the tunnel through the perforated top wall thereof. In this manner, gas sucked through the perforated top wall of the tunnel from the exterior thereof forms gas jets impinging upon the conveyor belt.

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Helsingborg, Sweden

Per-Oskar Persson