Leavening Cell

By: Vittorio Loschiavo

Description: Leavening cell suitable for leavening at its best at a constant temperature of about 26°C-28°C the sourdough, used to obtain: Bread, Focaccia, Pizzas,, Brioches, Desserts, Large Leavenings (Colomba, Pandoro, Panettone, etc).

The project

Before starting to physically work on the leavening cell, I designed everything on the computer with the google sketchup software, so I limited the errors and construction costs.

The structure is made with 20x20 aluminum profiles that are normally used to make 3D frames, CNC, etc. The profiles are held together with aluminum angulars for 20x20 profiles. In the inner wall of the cell and in the upper part, I fixed a metal grid (it can be of any material as long as it has a certain rigidity and can withstand at least up to 40-50°C). As a heating element I used a heated 50 watt cable, 6 meters long normally used to heat aquariums and terrariums. The heated cable is fixed to the metal grid by means of plastic clamps.

For the covering of the aluminum frame I used 6 mm thick wooden panels, the inner walls were covered with heat-reflecting insulating material (or the common aluminum roll fixed with double-sided adhesive tape). For the temperature control of the leavening cell I used a double timer with relay output and a thermostat with probe. Internally, at the top I inserted a 12VDC LED lamp. On the front panel, in addition to a double timer and a thermostat, there is also a general on / off switch, an on / off button for the lamp. At the top, hidden from view, I inserted a low voltage power supply (12 VDC) and the relative wiring. On the back there is a general 220VAC power outlet with an illuminated switch and a fuse.

Components

• 5 Pcs 1m Aluminum Profiles 20x20 (4pz da 440 mm / 4pz da 320 mm / 4pz da 300 mm)
• 4 Pcs T Slot L Shape Inside Corner Connector Joint Bracket for 2020 Series Aluminum Profile
• 2 Pcs Hinge 20x20 profile
• 1 Pcs V-Slot Door Handle
• 1 Pcs Power Inlet with 5X20 Fuse Holder
• 24 Pcs Corner Bracket 20x20x17mm
• 1 Pcs Heated 50watt cable long 6 meters
• 1 Pcs Red light switch
• 1 Pcs Green light switch
• 1 Pcs Push-button switch
• 1 Pcs Relay Module with Dual Time
• 1 Pcs Thermostat
• 1 Pcs Plexiglass 3 mm 440x340 mm
• 2 Pcs Poplar plywood panel 6 mm thick 422X395 mm
• 1 Pcs Poplar plywood panel 6 mm thick 452x401 mm
• 1 Pcs Poplar plywood panel 6 mm thick 452X422 mm
• 1 Pcs Poplar plywood panel 6 mm thick 440X371 mm
• 1 Pcs Poplar plywood panel 6 mm thick 440X72 mm

Block Diagram