Now in domestic engineering and foreign trade industry the tendency to development of modular thermal technological devices with application of ranks of preferable numbers at determination of key parameter of the device and for the maximum unification of designs of the main knots is observed.
At the closed cover in coppers in the course of boiling excessive pressure has to be no more than 2,5 kPas (0,025 kgfs / see. In order that pressure was not more than this size, in the central part of a cover install the valve turbine.
Coppers are classified by constructive registration on not modular, section modular and section modular with functional capacities. Coppers have alphanumeric indexation. For example, the index of a copper of KPE-160 is deciphered so: To – a copper; – pishchevarochny; – the electric; 160 – capacity (in dm.
The copper consists of a cooking vessel 6 and cases (external 4, connected among themselves by welding. The space between them forms the heating chamber - a steam-and-water shirt In the lower part of a shirt the steam generator 1 in which the water vapor filling a copper shirt is developed settles down. The external copper becomes covered by thermal isolation 3 which from above becomes covered by a casing From above coppers have a cover
The internal wall of an inside pocket of the steam generator forms a furnace chamber as which arch the spherical bottom of a cooking vessel serves. In the lower part of a furnace chamber the grid-iron lattice is placed. Under a furnace chamber the zolnikovy camera in which the drawer for collecting ashes is installed is placed. For regulation of air supply under a grid-iron lattice near an ashpit the door with blinds is mounted.
Heating of a cooking vessel of the boiler is carried out due to warmth of steam formation. Steam, getting to a copper shirt, adjoins to cold walls of a cooking vessel and an external copper and it is condensed. Thus the hidden warmth of steam formation which goes for heating of contents of a copper is marked out.
Now electric pishchevarochny coppers of KPE with a capacity of 40, 60, 100, 160 and 250 l are issued; coppers with gas heating of KPG with a capacity of 40, 60, 160 and 250 l; solid propellant KPT with a capacity of 160 l and steam pishchevarochny coppers of a check point with a capacity of 100, 160 and 250 l. Coppers with a capacity of 40 and 60 l are issued overturning, and with a capacity of 100, 160 and 250 l - not overturning.
Principle of work. Water in the steam generator heats up to boiling, the formed steam comes to a steam-and-water shirt, adjoins to walls and a bottom of a copper, is condensed, giving warmth of steam formation due to which through a bottom and walls of a copper its contents heat up. Condensate flows down back in the steam generator and again evaporates.
As shows the analysis, panel coppers surpass serial in the following indicators: metal consumption, technological effectiveness at production, ergonomics thanks to fitness to functional container, possibility of unification as a result of application of identical panel effects, reliability in a consequence of rigidity of panel systems,.. .
Cooking of a number of foodstuff proceeds in specific conditions of heat exchange that is especially brightly shown on the example of cooking of porridges. In this case the heated environment represents two-component system from grain and water.
It is also necessary to note that the panel principle is applicable to rather wide range of thermal devices, is perspective at creation of new devices of periodic action and transformers; gives the chance at least for 50% to improve quality of devices, including their such indicators as metal consumption, extent of unification, technological effectiveness, ergonomics, simplifies factory equipment and production.
The main production requirements imposed to designs of cooking devices are reduced to receiving a high-quality ready-made product with the maximum preservation food (proteins, fats, carbohydrates, mineral, extractive substances, vitamins at the minimum expenses of warmth.
Such constructive decision creates optimum conditions for unification of the main knots, metal consumption reduction, improves technological and ergonomic indicators and improves working conditions of the service personnel.