Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
  • F26B21/20—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
  • F26B21/30—Controlling, e.g. regulating, parameters of gas supply
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
  • F26B21/30—Controlling, e.g. regulating, parameters of gas supply
  • F26B21/33—Humidity
  • F26B21/333—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
  • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying goods
  • F26B2210/16—Wood, e.g. lumber, timber

Definitions

• the invention relates to the drying ovens, which enable the food products such as vegetables, fruit, and cereals, and the wooden products to be dried by removing their moisture content, so that said products may be processed and stored in a hygienic manner.
• the humidity of the food products such as vegetables, fruits, cereals etc. and wooden products such as wooden, timber are to be dried in order to store them for long time periods without deformation. Because the relative humidity contained in the said food and agricultural products cause mildew. .
• Funguses are micro organisms naturally existing in air and soil and frequently seen in agricultural products. Most of food products are exposed to infection of alpha toxins during production, processing, shipment and storing. The most important factors playing a role for fungus in food products and conversion into alpha toxin are relative humid surrounding the food product as well as storing temperature. Optimum temperature for fungus development and micro toxin formation is 25-30 0 C and relative humid is 88-95%.
• the product to be dried is kept under sunlight and also exposed to wind.
• the products dried in open air or under sunlight are exposed to pollutants such as dust, dirt, exhaust emitted from outside.
• pollutants such as dust, dirt, exhaust emitted from outside.
• the agents which are dangerous for health when used over the permitted amounts, such as saline, sulfur are used in order to prevent fungus and color changes.
• the said process aims to improve the color of the products to be dried and enabling their storage for longer time periods without fungus and corruption but it is highly difficult to prevent fungus.
• Another drying process is the drying by means of freezing. This process requires high amount of investment and operating cost. In addition, methods such as drying by means of spraying liquid, removal of humid in a vacuumed atmosphere are also applied. .
• the purpose of the invention is to bring the humid level contained in the food and agricultural products to the required use or store level in the shortest time period with consumption of the least energy.
• Another purpose of the invention is to remove the humid from the food and agricultural products without damaging their cell structure, to prevent exposure to alpha toxin and fungus and to provide that food and agricultural products are hygiene.
• Another purpose of the invention is to prevent infection of harmful factors such as bacteria, dust, dirt etc. in the outside air to the dried products and enable the dried products to be resistant against harmful factors occurring in the outside atmosphere.
• Another purpose of the invention is to develop a drying process causing less time and energy consumption with less cost when compared to other drying processes, and to develop a drying oven realizing this process.
• Air circulation fans 10. Wire mesh
• Figure-1 shows upper view of the invention. " • .. - .
• the present invention relates to the drying ovens (T) 1 which enable the food products to be dried (8) such as vegetables, fruit, and cereals, and the wooden products by removing their moisture content, so that said products may be processed and stored in a hygienic manner.
• the rate of temperature increase in drying atmosphere is highly important. Prompt increase of temperature of the product to be dried (8) leads to formation of a resistance layer on the surface of the product to be dried and the said layer prevents the vaporization from surface towards ambience and changes the cellular structure of the internal parts. For that reason, the heat provided for increasing internal steam pressure of the product to be dried (8) should be controlled as per the product to be dried (8). .
• Figure 1 shows the drying oven (1 ) developed under this present invention.
• the product to be dried (8) is located on the shelves (2) of the drying oven (1 ) either in desired cut form or as a whole through the conveyor.
• a gas preferably air is needed to provide current around the product to be dried (8) is needed.
• the mutual air circulations provided by means of the air circulation fans (9) shown in Figure 1 is passed over the product to be dried (8).
• Drying oven (1) has been wrapped with wire mesh (10) in order to protect air circulation fans (9).
• the heating battery (3) located in the drying oven (1) heats the environment and the circulated air provides removal of the humidity in the product to be dried (8).
• the humidity removed from the product to be dried (8) is condensed by means of cooling battery (4) and discharged from the system.
• the steam pressure of atmosphere where circulation is performed should be less than the steam pressure of the product to be dried (8).
• the conditions in the drying oven (1) are controlled with thermostat (5), humidity control member (6) and a control panel (7) used to determine the air circulation direction.
• the process is controlled by means of memories of all phases digitally.
• thermostat (5) prevents formation of a waterproof layer preventing vaporization of moisture contained in the product to be dried (8).
• the temperature control is also made to prevent vaporization of required fats causing odor to the end product.
• the condensation is controlled with humidity control member (6) in order to prevent removal of the humidity that can be transferred from internal part of the product to be dried (8) to the surface more than the allowed capacity and to protect homogenous cellular structure.
• Heating can be provided by means of heating, hot water, thermal power, electricity and solar energy. Since the locations through which air passes have cooling battery (4), condensation is provided. If ambient temperature is lower than 15 0 C, cooling is provided by use of outside air with help of cooling battery (4) and air circulation fans (9).
• Analogue and digital control of dehydration process provides control of entire process and digital data store of the process enables working on critical points of the process. Air circulation is controlled by UV rays against any infection risk that may exist inside and can conduct ozone sterilization before operation of the system. Thus, it enables the end product a hygienic product appropriate for man consumption.
• the internal air re-circulated inside the insulated drying oven (1 ) only consumes energy for vaporization of the humidity in the desired rate.
• the said drying oven (1) converts the ordinary drying process into constant drying process regardless of humidity content of the atmospheric air and accelerates it.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Drying Of Solid Materials (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=38331726

Family Applications (1)

Country Status (2)

Cited By (15)

Family Cites Families (10)

• 2006
  • 2006-03-08 TR TR2006/01074A patent/TR200601074A2/tr unknown
• 2007
  • 2007-03-08 WO PCT/TR2007/000022 patent/WO2007102792A2/en not_active Ceased

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