Method for preventing bacterial growth in a food processing plant and such a plant for carrying out the method
US5293753A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1992 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Jun 9, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D21/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a method for preventing bacterial growth in a refrigerating or freezing plant for food, the plant (1 ) includes a substantially closed housing (2) and, arranged therein, a device (3) for refrigerating food in this housing, and has an operating cycle including a work period during which the refrigerating device (3) is active, and a rest period during which the refrigerating device (3) is inactive and the plant can be cleaned. The cleaning includes raising the temperature in the plant above a temperature requisite for killing bacteria. Furthermore, the air pressure in the plant is maintained higher than the ambient pressure, at least during the entire rest period, by supplying air free from bacteria. The plant (1) includes heaters for raising the temperature therein during a rest period above a temperature requisite for killing bacteria, and air supply devices (7, 8) for supplying the air free from bacteria.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.