System and method for controlling oil content in fried food products

Patent metadata

Field	Value
Publication number	US-10485380-B2
Application number	US-201715793651-A
Country	US
Kind code	B2
Filing date	Oct 25, 2017
Priority date	Oct 26, 2016
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A fryer system and method for producing fried food pieces are disclosed herein. A fryer, located in a frying region of the fryer system, produces fried food pieces. An adjustable draining device, located in a draining region of the fryer system, is downstream from the frying region and controls a residence time of the fried food pieces in the draining region. A set of takeout conveyors bridges the frying region and the draining region and reduces a bed depth of the fried food pieces as the set of takeout conveyors transfers the fried food pieces from the fryer to the draining device. An enclosure at least partially encloses the frying region and the draining region to maintain a controlled environment within the draining region.

First claim

I claim:

1. A fryer system comprising:
a fryer in a frying region of the fryer system, wherein the fryer produces fried food pieces;
an adjustable draining device in a draining region of the fryer system, wherein the draining region is downstream from the frying region, and wherein the adjustable draining device controls a residence time of the fried food pieces in the draining region;
a set of takeout conveyors bridging the frying region and the draining region, wherein the set of takeout conveyors reduces a bed depth of the fried food pieces as the set of takeout conveyors transfers the fried food pieces from the fryer to the adjustable draining device, wherein the adjustable draining device is a set of inclined conveyor belts;
an enclosure at least partially enclosing the frying region and the draining region, wherein the enclosure maintains a controlled environment within the draining region; and
an environmental control subsystem comprising a plurality of feed lines in fluid communication with a return line, wherein each of the plurality of feed lines originates at a different location along a length of the fryer system, wherein the return line terminates at the draining region, wherein steam is recovered from any one of the plurality of feed lines based on a desired temperature of the draining region.

2. The fryer system of claim 1 , wherein the adjustable draining device is a vertical orientation device that orients the fried food pieces in at least a generally vertical orientation.

3. The fryer system of claim 2 , wherein each of the set of inclined conveyor belts comprises a plurality of vertical orientation members extending outwardly from a conveying surface, and wherein the plurality of vertical orientation members span a width of the conveyor.

4. The fryer system of claim 3 , wherein the adjustable draining device comprises at least one of a variable velocity, a variable elevation, and a variable number of conveyor belts in the set of conveyor belts.

5. The fryer system of claim 1 , wherein the set of takeout conveyors comprises a plurality of conveyor belts arranged in series, and wherein the set of takeout conveyors reduces the bed depth of the fried food pieces to a substantially monolayered state.

6. The fryer system of claim 1 , wherein the set of takeout conveyors comprises at least two conveyors arranged in series, wherein a first conveyor removes fried food pieces from the fryer, wherein a second conveyor deposits the fried food pieces onto the adjustable draining device, and wherein the second conveyor conveys the fried food pieces at a higher velocity than the first conveyor.

7. The fryer system of claim 1 , wherein the enclosure further comprises a set of flow-control outlets.

8. The fryer system of claim 7 , wherein the set of flow-control outlets is a plurality of exhaust stacks, wherein each of the plurality of exhaust stacks is positioned at a different location along a length of the fryer system.

9. The fryer system of claim 1 , wherein the environmental control subsystem further comprises a heat exchanger, wherein the heat exchanger heats exhaust drawn from one or more of the set of feed lines.

10. The fryer system of claim 1 , wherein the environmental control subsystem further comprises an inert gas dispenser, wherein the inert gas dispenser is positioned to introduce an inert gas into the draining region.

11. The fryer system of claim 1 , further comprising:
an oil content sensor downstream from the draining region, wherein the oil content sensor provides oil content data for adjusting system variables.

12. A method for producing fried food pieces in a fryer system, the method comprising:
frying a plurality of food pieces in hot oil to form the fried food pieces;
transferring the fried food pieces from the hot oil onto an adjustable draining device located within a draining region of the fryer system, wherein the adjustable draining device is a set of inclined conveyor belts;
maintaining a controlled environment in the draining region by conveying exhaust generated by the fryer system to an upstream position of the draining region, wherein the exhaust is selectively released from any one of a plurality of flow-control outlets based on a desired temperature of the draining region, wherein each of the plurality of flow-control outlets are positioned at a different location along a length of the fryer system; and
conveying the fried food pieces through the draining region for a residence time.

13. The method of claim 12 , wherein the transferring step further comprises:
reducing a bed depth of the fried food pieces before depositing the fried food pieces on the adjustable draining device.

14. The method of claim 13 , wherein the step of reducing the bed depth further comprises:
transferring the fried food pieces from a first conveyor of a set of takeout conveyors to a second conveyor of the set of takeout conveyors, and wherein the second conveyor conveys the fried food pieces at a higher velocity than the first conveyor.

15. The method of claim 12 , further comprising:
heating at least a portion of the exhaust to form heated exhaust; and
introducing the heated exhaust into the draining region.

16. The method of claim 12 , further comprising:
orienting the fried food pieces in a substantially vertical orientation on the adjustable draining device.

17. The method of claim 12 , further comprising:
analyzing an oil content of the fried food pieces downstream from the adjustable draining device; and
adjusting system variables based on the oil content of the fried food pieces.

18. A fryer system comprising:
a fryer in a frying region of the fryer system, wherein the fryer produces fried food pieces;
an adjustable draining device in a draining region of the fryer system, wherein the draining region is downstream from the frying region, and wherein the adjustable draining device controls a residence time of the fried food pieces in the draining region;
a set of takeout conveyors bridging the frying region and the draining region, wherein the set of takeout conveyors reduces a bed depth of the fried food pieces as the set of takeout conveyors transfers the fried food pieces from the fryer to the adjustable draining device, wherein the adjustable draining device is a set of inclined conveyor belts;
an enclosure at least partially enclosing the frying region and the draining region, wherein the enclosure maintains a controlled environment within the draining region; and
an environmental control subsystem comprising a plurality of feed lines in fluid communication with a return line, wherein the return line terminates at the draining region, wherein each of the plurality of feed lines originates at a different location along a length of the fryer system, wherein at least one of the plurality of feed lines originates downstream of the return line.

19. The method of claim 12 , wherein at least one of the plurality of flow-control outlets is positioned downstream of the draining region.

Assignees

• Frito Lay North America Inc

Inventors

• Fagan Scott

Classifications

• A23L5/11

  using oil · CPC title

• A47J37/1228

  Automatic machines for frying and dispensing metered amounts of food · CPC title

• A23V2300/24

  Heat, thermal treatment · CPC title

• A47J37/1214 Primary

  the food being transported through an oil-bath · CPC title

• A23V2300/10

  Drying, dehydrating · CPC title