Apparatus for frying of doughnuts in deep fat fryer

FIELD: kitchen equipment employed with the use of heating ovens.

SUBSTANCE: apparatus has dough accumulator with feeding branch pipe for feeding into device adapted for forming of individual semi-finished products and provided with vertical cooled sleeve mounted into bottom of heat-insulated deep fat fryer bath equipped with spiral heater, and ready product pickup device for removal of ready products from central guiding bar and directing into discharge ramp, said central bar being mounted on cutoff member of device for forming of individual semi-finished products and said cutoff member being kinematically connected with reciprocation drive. Ready product pickup device is made in the form of multithread screw defined by flexible rods helically fixed on shaft of rotation incidental with direction of lifting of doughnuts along guiding bar. Flexible restrictor fixed on upper end of guiding bar is preferably made in the form of cable oriented into discharge ramp.

EFFECT: improved quality of product and provision for synchronous extraction of ready products and direction thereof into discharge ramp.

2 dwg

The invention relates to cooking equipment, using heating furnaces, and more particularly to a machine for automatically forming donuts with simultaneous hot when technological transportation fried.

The level of technology in this field characterizes the automatic installation for frying food in oil, described in patent RU 2129831, A 47 J 37/12, 1999, which contains the frying bath, divided by a partition into connected loading zone and frying.

On the lid of the frying bath in the download area cumulative installed capacity for the test with the dispensing mechanism and generating test semi-finished product, the gravitational coming through the gap under the baffle and the bottom of the tank into the guide cylinder, vertically fixed in the area of cooking, where mounted electric heater.

Over guides donuts when to float in the oil cylinder fixed bracket adjacent the plunger in the receiver, kinematically connected to the drive of the metering mechanism of the drive.

Insulated tub equipped with a device for draining oil and level control module, which automatically makes refilling cold deep fat, and drain it of excess.

Free volume of the frying bath is communicated with an exhaust pipe equipped with a means of Frito is Otdelenia.

A continuation of the marked advantages of the installation are inherent disadvantages: low reliability and poor quality cooking doughnuts.

When spontaneous orientation of semi-finished products in the download area and in the guiding cylinder of the frying zone may cease to feed them due to jamming in the gap under the wall, or place the mechanical deformation of the plunger incorrectly oriented doughnut held by the limiter, respectively.

Because of the unilateral placement of the heater relative to the guide cylinder at a constant flow on the other side of the circulating cold oil from the zone load is uneven heating of the test semi-finished products, which causes varying degrees of readiness in the mass of each fried doughnut.

Noted shortcomings in is selected as the closest analogue machine for frying doughnuts fried in patent RU 2165231, A 47 J 37/12, 2001, which contains placed separately in a common housing insulated frying bath with coaxial spiral heater and hopper with the feed pipe of the test.

Tube feeding test will be reported with vertical glass device forming the test piece semi-finished products, built in the center hole of the bottom of the frying bath. In this glass, with channels for circulation of cooling water, a piston, kinematically linked with the drive shaft of the reciprocating movement.

The piston device forming unit test the semi-torus sleeve forms the bottom is made in the form of a conical cutter, and on top of it installed guide rod, designed for guiding the movement of donuts fried.

Frying bath equipped with a device for the extraction of finished products with the guide rod in the window of the cover onto the storage that is associated with the case and made in the form of the l-shaped lever passing through the longitudinal groove of the cover and the fixed lower shoulder on the axle through the hub. More shoulder in a free state parallel to the wall of the bath, its length is selected based contact during rotation of the lever with the top donut, located on the guide rod.

The lever is manually over the free end of the axis. In this setting, for the cycle of the reciprocating movement of the piston in a vertical glass provides automatic volumetric dosing of the trimming portion of the test with the simultaneous formation of semi-finished doughnut in the shape of a torus on guide rod. Test semi-finished products consistently served underside of healthy lifestyles is Mering rod directly in the frying bath, which technologically isolated from leakage of oil supplied to the test, and then the piston of the dispenser in its lower position.

From heat fried dough, which markedly increases in volume, actively evaporates water, which accounts for the density of donuts frying halved and they focused on the guiding rod surface to the device to retrieve.

In this automatic installation donuts all the way movement deep inside the coaxial heater and so thoroughly fried with a volumetric heat input.

However, a disadvantage of the known installation, which is the technical nature selected as the closest analogue is the poor quality of the finished product because of the subjective factor manual removal of donuts as possible cases of overexposure on guide rod in a hot frying fat, which leads to the formation of carcinogens.

When this congestion test on the formation of semi-finished and finished donuts covered, removal of which is necessary to switch off the unit.

The equipment lever of the follower self-driven, steerable track system with a sensitive element for controlling the level of donuts on guide rod, significantly complicates the design and value in the set is I.

Task to be solved by the present invention is directed, is to improve the design of the facility for technological ensure the required quality of the produced donuts in the automatic mode, including simultaneous extraction of finished products onto the storage.

The required technical result is achieved by the fact that in the known installation for frying doughnuts fried, containing the drive tube feeding test in the device forming piece semi-finished products, vertical refrigerated glass which is mounted in the bottom of the insulated frying bath, equipped with a spiral heater, and the readout device of finished products in the outlet storage with Central guide rod mounted on the cutter device forming piece semi-finished products, kinematically connected with the drive of the reciprocating movement, according to the invention, the extraction device of finished products is made in the form of multiple auger, made of elastic rods, spiral attached to the axis of rotation of the associated lifting donuts for directing the rod at the upper end of which is fixed a flexible stopper, made in the form of a rope, oriented to discharge the storage.

The distinctive signs provided the required quality of the series is Ino produced donuts identical mass, which are evenly browned surface and in the volume when the automatic functioning of all structural components and mechanisms of the installation, in particular provided synchronicity piece reading finished products with the forming cycle test semi-finished products.

The device extraction of finished products in the form of multiple auger, made of elastic spiral rods, helped to coordinate automatic shear interaction constant associated rotation of the puller with top donut post on guide rod as it ascends. This buoyancy force to extract the donut is unstressed by an inclined screw auger.

Securing the upper end of the guide rod flexible limiter provides the offset post donuts in the frying bath in the side window is unloaded, and the top one allows you to partially deploy for smooth interaction with a spiral rod of the screw.

The implementation of the limiter in the form of a rope, aimed at diverting the storage, provides for the orderly and forced single-piece feed of donuts in the discharge tray, while unstressed reorient the direction of their movement.

The proposed design of the device eject the finished donuts secures technology time from the LCD of each piece goods, fried and in the tub for a full wrap of the excess from the surface of the doughnuts.

Therefore, every significant topic are needed, and their combination in a stable relationship is sufficient to achieve novelty quality, extrinsic signs of dissociation; that is, the problem is solved not by the amount of effects, and the effect of the amount of signs.

The comparative analysis of proposed technical solutions to identified analogues of the prior art from which the invention not obvious to a person skilled in food engineering, has shown that it is not known, and given opportunities for industrial mass production installation for frying doughnuts can be concluded according to the criteria of patentability.

The invention is illustrated by drawings, which depict:

figure 1 - schematic installation;

figure 2 - pusher device extraction, axonometric view.

Installation for frying doughnuts (figure 1) contains fixed in a common housing 1 drive 2 test and insulated frying tub 3, the closed lids 4 and 5, respectively.

In the Central hole of the bottom of the bath 3 is mounted a vertical water-cooled glass 6 device forming unit test the semi-torus sleeve shape, which has a float dispenser 7, overlapping output 6 cups in a bath 3.

The dispenser 7 bottom made horses is a mini cutter 8, and a measuring groove 9, which is freely rod 10 drive M horizontal reciprocating it travels along the pipe 11 filing test from the drive 2 in the Cup 6.

The groove 9 pornobrazil two stops kinematic circuit on the rod 10, limiting the upper and lower extreme positions of the cutter 8 which provides a metered flow into the Cup 6 servings test on the formation of semi-finished doughnut.

At the end of the rod 10 is fixed lattice partition 12, equipped with a longitudinally movable slide gate 13 with the stop 14, which together perform the function of a check valve.

With a deep tub 3 is coaxially sequentially assembled with the annular gaps of the spiral heater 15 and the cylindrical heat exchanger 16, mounted with a clearance above the bottom of the tub 3 and hung on the receiving tray 17 fixed onto the gravity slid 18. The tray 17 mounted in the tub 3.

The piston of the metering device 7 from the top, with swing set guide rod 19, which is inclined to the receiving tray 17. On the upper end of the rod 19 fixed eccentric directed into the receiving tray 17 rope 20, which performs the function of the limiter height of the column of donuts on the rod 19.

Under the cover 5 with exhaust pipe 21, is installed washausen is along the way (counterclockwise in the drawing) multiple auger 22, which is made in the form of a spiral elastic rods 23 (2), attached to the axis 24 of rotation, which is located above the rod 19 so that the trajectory of the pop-fried doughnuts and the rotation of the spiral rods 23 on combined at the level of the tray 17.

Bath 3 is equipped with a module 25 topping cool and drain the old oil.

The offered machine is as follows.

In the initial position of the metering device 7 is at the bottom when the piston closes the outlet of the Cup 6, is aligned with the Central hole of the bottom of the bath 3, which is filled with oil to specified level, then a heater 15.

Drive 2 fill with the prepared dough, which flows by gravity into the pipe 11 and the glass 6 device forming a test of semi-finished products. While the dough is gravity fed through pipe 11 through a permeable medium 12 by moving to the right gate valve 13 to the open position where it is retained by the stop 14.

After heating of the oil bath 3 to a temperature of 180-190°include actuators M and an exhaust fan connected by a pipe 21 with the free volume 3 under the cover 5 and the rotation axis 24 of the screw 22 (conventionally not shown).

For the cycle reciprocating movement of the rod 10 drive M is metered flow in p the tube 11 portions of the test and the formation of the semi-finished product on the piston of the metering device 7 in the Cup 6.

When the movement of the rod 10 to the right in the drawing, the lattice of partitions 12 overlaps a gate valve 13, which then move together. Pressure test the piston of the dispenser 7 is lifted above the glass 6 and the bottom of the tub 3, and formed in the annular gap rushes dough fed into the heated oil.

The rise of the dispenser 7 above the glass 6 and the bottom of the tub 3 is fixed lower stop of the groove 9 on the shaft 10.

Then the rod 10 drive M returns to its original position, thus creating a vacuum under the piston of the metering device 7, as a result he falls, and a conical cutter 8 is separated formed on the rod 19 tor test, who is in the bath 3.

In the bottom position of the metering device 7, the piston tightly closes the Cup 6, the insulating tub 3, settles the upper lock groove 9 on the shaft 10.

Simultaneously, the batter seeps through the grid supplied by a rod 10 partitions 12, holding freely set the valve 13 in its rightmost position before clamping her stop 14 with the partition 12, which then move together to the starting position.

During the return stroke of the rod 10, when the lattice partition 12 is open, and through it flows a measured dose of the test, adequate volume generated test semi-finished piston metering device 7 in the Cup 6 in the subsequent working stroke 10. Prior the nutrient dosing weight test for valve wall 12 allows you to create identical semi-finished donuts and ensures functional reliability of the mechanism, work body in which the piston of the dispenser 7) operates automatically as a float.

Generated test semi-finished product in the bath 3 actively roast on all sides in hot oil. It is located on the piston of the dispenser 7 above, since the density of the test (900 kg/m³) exceeds the density of the oil (600 kg/m³). This guide rod 19 is formed inside the torus test semi-finished product.

Then the cycle repeats, and the newly formed semi-forcibly lift placed in the bath 3 on the rod 19 is already fry the doughnuts.

When roasting semi heating temperature from the surface moves inward, and from the test, which increases in volume, actively evaporated water, resulting in their density decreases. 8-10 with frying density test is compared with the density of deep-frying and then reaches 400 kg/m³, that is, the lower its density, so the top donuts alternately detached from the post below and float to the surface of the deep.

Vapor bubbles on the surface of the deep burst in the froth layer from contact with the cold air coming through the window unload in the cover 5, when the hood of excess foam in the nozzle 21.

Radiation and with the hot frying spiral heater 15 heats evenly cylindricus the first heat exchanger 16, all the heat which convection is passed through the separating wall to the cold deep inside of cylinder 16. Due to uneven heating of the oil moves to fry the donuts, flowing around their post on the rod 19 and the inside and outside.

Under the action of gravity unevenly heated frying fat, so heterogeneous in density, in the bath 3 actively arise circulating flows: hot oil from the annular gap 3-15 through the gaps between the bottom of the tub 3 by the heater 15 and the cylinder 16 to the inside of the latter to the donuts; from the cylinder 16 above the cold oil to the periphery of the bath 3, which is displaced upward by the hot flow from the heater 15.

In the center column of donuts locally increases the pressure and hot deep transverse jets flows between the donuts to the cylinder 16 and then up to recirculated to the heater 15.

Post doughnuts on the tilted rod 19 is offset from the axis of the bath 3 in the direction of the receiving tray 17 and held the rope 20, while the opposite end of the upper donut turns to multiple rotating the rod 22.

Flexible stopper 20 is regulated by the number of donuts on the rod 19 and the specified time of their frying in deep fat.

Spiral rod 23 of the rotating auger 22 top donut unstressed faced by the rope 20 into the receiving tray 17, where the remains of deep-frying about the ecay with donut and merge into the bath 3. This doughnut, which was previously discharged into the tray 17 is pushed in the storage 18 and is removed from the installation.

To replenish the flow of oil is used the capacity of the module 25, which is connected to the tub 3 from the level sensor or manually by the operator.

Thus, in the installation automatically by selecting technological regimes and regulation of the interaction between the Executive structural elements provided the appearance and quality frying identical in mass and shape of donuts.

Installation for frying doughnuts fried, contain a drive test with tube feeding in the device forming piece semi-finished products, vertical refrigerated glass which is mounted in the bottom of the insulated frying bath, equipped with a spiral heater, and a stripper finished products in the outlet storage with Central guide rod mounted on the cutter device forming piece semi-finished products, kinematically connected with the drive of the reciprocating movement, characterized in that the extraction device of finished products made in the form of multiple auger, made of elastic rods, spiral attached to the axis of rotation of the associated lifting donuts on the guiding rod at the upper end of which is fixed a flexible limit the spruce, made in the form of a rope, oriented to discharge the storage.