1.6. Dimensions:
The dimensions of the ovens are shown in "Figure 1.1-1.4" and are reflected in the table in section 1.5. The
manufacturer has the right to make changes in the design of the equipment and change the dimensions.
1.7. General characteristics of the materials used in the product
The PMCOM series oven has a block design. Main blocks (Fig. 1.1 and 1.2), oven block, proofing
cabinet or stand block.
The inner walls of the baking chamber and the front panels of the oven body are made of AISI 304
stainless steel sheet. The space between the inner and outer panels is filled with mineral wool insulation,
layer thickness from 40 to 120 mm.
The heat fan has one rotation speed.
On the roof of the oven body (Fig. 1.1 - 1.4), a thermal fan, a drive for rotation of a rack trolley, a
water pipe of a steam generator, and exhaust ventilation pipes (steam removal) are mounted. The space
between these units is insulated with industrial mineral wool slabs. On top, the insulation is covered with a
galvanized carbon steel sheet that forms the roof of the oven. A door is hung on the right block of the oven
body.
The control panel is located on the left front panel of the oven. To cool the control panel, an axial
fan can be optionally integrated in the upper left of the oven.
The visor is used to collect steam and smoke when opening the door, followed by their removal by
an exhaust fan. The mounting block of the oven electrical equipment is located behind the control panel.
The baking chamber is heated by air circulating in a closed circuit. In the rear right part of the
baking chamber, a slide block is installed, which has the purpose: to evenly distribute heated air along the
height of the chamber and direct it to the dough pieces. The regulation of the flow rate is carried out by
changing the size of the slots between the fixed panels and the movable dampers. Fig. 3.2From the baking
chamber, air is sucked into the heating block, below the decorative panel. Further, heated in a heat
exchanger (heating element block) passes through the impeller of the heat fan and is directed to the
elements of the steam generator, heating them. From the steam generator, the air flow through the vane
block goes back to the baking chamber.
To control the temperature of the heated air and control the baking process, a temperature sensor is
built into the air duct. The sensor is located behind the control panel under the thermal block.
Process steam for moistening dough pieces is generated by steam generator 3 Fig. 1.1-1.4, located in
the right corner of the back wall of the baking chamber, behind the slide block. The supplying water supply
is connected to the external network through a ball valve. The amount of water supplied for steam
generation is set according to the program (option) or manually and is determined by the opening time of
the solenoid valve. Water is supplied to the cast-iron balls of two tiers of the steam generator at the same
time and flows through the holes in the bottom of the trays to the balls of the trays of the lower levels. This
configuration of the steam generator provides its high productivity in terms of steam generation.
Part of the water that has not evaporated in the steam generator is collected in the bath and is
removed through a drain pipe to the sewer. Steam enters the baking chamber through the slots in the slide
block. The steam generator functions normally only at a pressure of 0.2-0.5 MPa.
The amount of water supplied for vaporization is selected empirically and averages about 5 seconds.
The steam supply time depends on the temperature in the baking chamber and the pressure of the heating
water. The higher the temperature and pressure of the water, the less time it takes to supply it to the steam
generator. The steam supply on the oven with the touch control panel is programmed before starting the
program.
The rotary rack drive consists of a worm gear motor and an emergency clutch. The output shaft of