Freezing tunnel FGV
Machine description and operation
The product is supplied evenly in a thin layer, across the full width of the first transport belt. The surface of the product is chilled inside the tunnel and frozen using cold air. At the same time the product is kept in motion by the FSS system that knocks against the underside of the belt. On the second belt the product is frozen to the core, in a thick layer. The product gives off heat to the air, which is subsequently cooled down again in an air cooler. The cooler needs to be regularly defrosted as moist air deposits on the cooler fins as frost.
The frost can even stop the air circulating (and therefore the transfer of heat and the freezing performance)! The tunnel consists of several coolers that can be individually disconnected from the freezing process during production. The chiller is then defrosted using hot gas. Defrosting can be done automatically (disconnection and refrigeration valves) or manually.
The type of fan, conveyor and the location of both components within the configuration results in an even distribution of air across the full width of the belt. Good distribution of air promotes uniform freezing of the individual products.
This tunnel meets the current stringent cleaning requirements: an all stainless steel interior (with special attention for sanitary design) with a welded floor, a minimum number of supportlegs on the floor, an easy-to-clean belt. The operation of the freezing tunnel improves if the products enter the tunnel freezer perfectly dewatered and at a low feed temperature. This can be achieved with an extra precooling section.
Major advantages
 | IQF products of perfect quality; | |
| All stainless steel interior; | |
| Hygienic design; | |
| Design allows easy access for inspection, cleaning and maintenance purposes; | |
| Very low energy consumption of fans and compressors thanks to optimum design; | |
| Maximum production cycle of several days by means of automatic or manually operated defrosting system using hot gas; | |
| Reliability; | |
| Low maintenance costs by using high-quality components; | |
| Easy and fast cleaning; | |
| Two-belt system. |
Application
All kinds of vegetables and fruit such as peas, beans, sliced carrots, corn, cauliflower, herbs, strawberries, peaches, etc.
Options
| Project-based solutions thanks to large variety of belt widths and belt lengths; | |
| Project-based control solutions using PLC, display and remote monitoring; | |
| Cleaning systems for belt, coolers and the complete interior; | |
| Integration of the prechilling section in the design. |
Freezing Tunnel FGV (pdf, 809 KB)
