Tuesday, 10 June 2014

Cooking oil filter - for Donut Maker

List of components:-
1.            Filtering assembly
2.            Fill hose
3.            Haight 8U ductile iron Gear pump
4.            Castors
5.            Stainless steel Filter tank
6.            Handler
7.            Pump stand
8.            ¾ inches Stainless steel pipe
9.            Cube melter
10.          Filter bag
11.          Heating element

We use the current product in market for our reference. We improve by directly move down from frying reservoir to oil filter reservoir, more easy. And add the heater, improve the flow rate of suction pump.


2.0     Concept design




1. Frying oil play an important role in quality of the fried food like doughnut.

2. The amount of oil absorbed by doughnut varies from 15-20% of their final weight.
3. There are many aspects that affect the quality of frying oil like:-
            A. oil properties and composition
            B. transport and, packing and storage of oil
            C. process of frying
            D. the evaluation of the frying oil during use



Based on the table above , the best choice is palm oil or palm oleic as it has average iodine value  , high oxidative  stability in high temperature , average melting point, average percentage in saturated, monosaturated fatty acid and low percentage  polyunsaturated fatty acid .


How Oil filtering work?

Filtration is a straightforward task. In frying doughnut, filtration with papers or woven  cloths can remove particle down to about 5micro meter in diameter for vegetable oil  a contaminants must be removed before enter the oil tank again. This will ensure the quality of doughnut and frying oil itself. Filter paper should be clean regularly, to discharge the foreign material removed from the oil after oil filtering process was carried out. If thus is not done the latter can form a bed of debris which continues to deteriorate will damage the oil pump.

Advantages of oil filter machine
-Improved food quality
-prolong the life if the oil and fat up to 80%
-Cut oil and fat cost by up to 40%
-filter the oil directly from cooking temperature
-safely and easily handling the oil
-reduce the needed for fryer cleaning

Parts in oil filtering system
1.    Barrier seal double pump w/relief valve
- Help pump the oil inside the tank
2.    3 set singaflex stainless steel flange hose
- help in transfer oil from oil tank for filter process and transfer back to oil tank
3.    Wooden block
-help in support the stainless steel pipe and absorb oil lost from pipe
4.    Oil reclamation
-          Store the unused  oil
5.    Steel pipe valve
-open path for oil to flow
6.    Filter paper
 –remove foreign material inside the oil
7.    Steel pipe valve
-          Open or close the path of oil flow
8.    Filter  oil tank
 –filter oil and store clean oil and let it cold down before enter the oil tank again

Feature of barrier seal pump
-Barrier fluid ring rotate through 360degree to meet various flushing arrangement
-Large nut end cap design allows for easy access for maintenance and adjustment of barrier fluid ring
-Sealed, lubricated radial bearing provides shaft stability and ensure proper alignment for the seals

Feature of singaflex stainless steel pipe
-Made from fines quality stainless steel pipe
- Safety factor4:1 ranging from 6mm to 550mm
-high working temperature of 200 degree to 700 degree Celsius


Flowchart of design method







Preliminary design

The preliminary design bridges the gap between the design concept and the detailed design phase. In this task, the overall system configuration is defined, and schematics, diagrams, and layouts of the project will provide early project configuration. During detailed design and optimization, the parameters of the part being created will change, but the preliminary design focuses on creating the general framework to build the project on.
After selected MS.LEE as project manager of all groups, we had been informed to build mini donut maker which have lower production than previous one. We need to change all parameter but the concept of design is still remains the same. We change all the configuration and consider how to build the machine and quickly improve our group project and come out a lot of new configuration.

Cooking Oil Filter
The device is designed to be used with Donut oil tank. It performs four functions:
·         It filters wasted oil for re-use.
·         It melts shortening.
·         It holds shortening.
·         It filters used shortening for re-use.
The major parts of design are gear pump, filter assembly, cube melter, filter tank, electrical board for switching the pump to generate on or off and heating element. Gear pump can able to pump hot cooking oil back to oil tank after process of filtering. Filter assembly contains of filter bag which can replaced by new one and easy to change it.

Cube melter is used to pre-melt some shortening in a pan on the stove and pour it into filter tank. Filter tank is where the dirt and shortening will stay at their when running the oil filter process.

Layouts and Configuration


The device is below the oil tank and able to receive hot cook oil after operating hours and pass through filter bag and melt cutter so that the dirt can been eliminated more effective and portable as shown above the layouts.


The concept design is suitables for this design because the greater size of concept design is more than enough for the design at here and getting more reliastic so that on detail design or fabrication will easy to understand and given the dimension to the component.





Lists of components:-



1.            Filtering assembly
2.            Fill hose
3.            Haight 8U ductile iron Gear pump
4.            Castors
5.            Aluminum Filter tank
6.            Handler

7.            Pump stand
8.            ¾ inches Stainless steel pipe
9.            Cube melter
10.          Filter bag

11.          Heating element

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