High performance fans

Pictures and information from: Baker Pacific Baking Process and Engineering Manual

 Direct Gas Fired Ovens

DGF 1

 

Baker Pacific Direct Gas Fired Oven

Extraction

Moisture from the dough pieces may be extracted from the baking chamber in each zone. The wet air in the baking chamber is drawn into a series of cross ducts at the top of the baking chamber. This wet air then enters the extraction duct running along the top of the baking chamber to the extraction fan entry. The wet air is exhausted through a vertical flue (chimney) to atmosphere. The amount of air extracted in each zone is controlled by a damper, which may be manually adjusted or by a motorized valve controlled by PLC.

DGF extr fan 1-2

 

 

 

 

 

 

 

Combustion air

In each zone the air is fed to the air header pipes from an air blower mounted on top of the oven. The air is drawn from the bakery. The air pressure for the burner system is controlled by motorized valves which are regulated by the automatic temperature control system or by a variable speed inverter drive for the fan.

Moro fan

 

 

 

 

 

 

Moro combustion air fan

Indirect Radiant Ovens

IR oven pic

 

 

 

 Circulating fan

The fan is located next to the burner (on the right in the picture above). The fan draws the hot gases through the system, distribution ducts, radiant tubes, headers and return ducts.

Circ fan 1Halifax fan 18P Multi-vane Forward Curved fan

Volume:          170 cm /minute

Pressure:         50 mm / 30 mm WG

Impeller speed: 845 / 731 rpm

 

 

 

 

 

 

Extraction and turbulence

In each zone a duct above the band extracts the moist air to the extraction fan. From the fan the wet air enters a duct at the side of the oven where it may be directed to the turbulence duct or to the flue to atmosphere. The system is controlled by dampers.

IR extr fanHalifax 15P Multi-vane Forward Curved fan

Volume:            114 cm /minute

Pressure:          70 mm WG

Impeller speed: 1129 rpm

 

 

 

 

 

Oven end extraction hoods

Oven end hood - bi furcated fan

Halifax bi-furcated fan on an oven end hood

The fan extracts hot air from the open end of the baking chamber and exhausts it to atmosphere.

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Halifax fans may be purchased from Halifax UK, or from their factory in Shenzhen, China

http.www.halifax-fan.co.uk                      http.www.moro.it

For more information please request at our Contacts page

 

 

 

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