Method for cleaning and/ or evaluating a food products mould drum and a combination of such a food products mould drum and a mould drum cleaning and/ or evaluating device

A method for cleaning a food products mould drum having an outer drum surface provided with multiple recessed mould cavities, each recessed mould cavity with a mould cavity wall formed at least in part by a wall part with a porous structure, the mould drum further being provided with one or more passage ports, the one or more passage ports being in fluid communication with the multiple recessed mould cavities via one or more passages and via a plurality of said wall part with said porous structure,

• wherein the mould drum having become soiled in a process of moulding three-dimensional products from a mass of one or more food starting materials, said process involving rotating the mould drum and feeding the mass to the multiple recessed mould cavities and ejecting formed food products from said mould drum, and
• wherein use is made of a mould drum cleaning and/or evaluating device having a fluid circuit comprising a pump configured to create a pressurized fluid stream in a pressure line of the fluid circuit, the fluid circuit further comprising a return line,
• the method comprising the steps of:
• arranging one or more pressure housings against an outside of and over a selection of one or more of the multiple recessed mould cavities, so as to form together with the mould drum an outside chamber, the outside chamber having a discharge port and a chamber port, said discharge port and said chamber port being in fluid communication with the selection of the one or more of the multiple recessed mould cavities;
• connecting the chamber port to the pressure line of the fluid circuit, and connecting the discharge port with the return line of the fluid circuit;
• and
• cleaning the selection of the one or more of the multiple recessed mould cavities in a first phase by causing a pressurized fluid stream to enter via the chamber port into the multiple recessed mould cavities and to exit via the discharge port to the return line of the fluid circuit.

A method for cleaning a food products mould drum having an outer drum surface provided with multiple recessed mould cavities, each recessed mould cavity with a mould cavity wall formed at least in part by a wall part with a porous structure, the mould drum further being provided with one or more passage ports, the one or more passage ports being in fluid communication with the multiple recessed mould cavities via one or more passages and via a plurality of said wall part with said porous structure,

• wherein the mould drum having become soiled in a process of moulding three-dimensional products from a mass of one or more food starting materials, said process involving rotating the mould drum and feeding the mass to the multiple recessed mould cavities and ejecting formed food products from said mould drum,
• the method comprising the steps of:
• arranging one or more pressure housings against an outside of and over one or more of the multiple recessed mould cavities, so as to form together with the mould drum an outside chamber, the outside chamber having a radiation source;
• and
• cleaning one or more of said multiple recessed mould cavities in a first phase by causing radiation in said one or more pressure housings by means of said radiation source.