JP2004065514A - Deep frying equipment for foodstuff - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide deep frying equipment for foodstuff by which the shape of the foodstuff is not collapsed and a food stuff is finished to a crisp by frying food material in an oil tank at a desired fixed temperature. <P>SOLUTION: The deep frying equipment 1 for foodstuff comprises the oil tank 11 containing edible oil for frying the food material; a discharging pipe 12 for discharging the oil in the tank 11; a heat exchanger 3 for heating the oil in the discharging pipe 12; and a supply pipe 13 for supplying the oil heated by the heat exchange 3 into the tank 11. A pressure reduction device capable of reducing pressure within the tank 11 is provided. Within the tank 11, a basket 16 for holding the food material is disposed. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a food frying apparatus for producing fried foods such as potato fries, and more particularly, to a food fry apparatus capable of frying food materials at a predetermined temperature in an oil tank. Foods include fries of potato fries, bananas, apples and other fruits.
[0002]
[Prior art]
For example, when frying frozen potatoes with oil, put a basket containing frozen potatoes in a heatable oil tank, evacuate the oil tank, and place the oil heated to about 120 ° C. at the bottom of the oil tank. The oil is filled up to the part where the basket is immersed by vacuum pressure, and the temperature is adjusted in a high temperature state (about 120 ° C.) so that the high temperature state is maintained until the frying is completed.
[0003]
As described above, it is most preferable to keep the vacuum state in the oil tank and fry the frozen potatoes at a temperature of about 120 ° C. However, the temperature of the oil around the frozen potatoes decreases to around 110 ° C, and therefore, when the frying is carried out, There is a disadvantage that the shape of the potatoes that have been solidified collapses. Furthermore, there is also a disadvantage that when frying at a low temperature, the oil enters the potatoes and does not fry.
[0004]
It is conceivable to fry at an oil temperature of 120 ° C. or higher (for example, 130 ° C.) in anticipation of a drop in the temperature of the oil around the frozen potato, but in such a case, there is a disadvantage that the product turns brown. .
[0005]
[Problems to be solved by the invention]
The present invention has been made to solve the above-mentioned conventional drawbacks, and its object is to allow food materials in an oil tank to be fried at a desired constant temperature, without deforming the shape, and providing a finished food with a firm finish. An object of the present invention is to provide an apparatus for fried food.
[0006]
[Means for Solving the Problems]
The food frying apparatus of the present invention includes an oil tank containing cooking oil for frying food material, a discharge pipe for discharging oil in the oil tank, and heat exchange for heating the oil in the discharge pipe. And a supply pipe for supplying the oil heated by the heat exchanger into the oil tank, thereby achieving the above object.
[0007]
In one embodiment, a pressure reducing device capable of reducing the pressure in the oil tank is further provided.
[0008]
In one embodiment, the oil heated by the heat exchanger is supplied to the vicinity of the food material in the oil tank.
[0009]
In one embodiment, a perforated container for holding food materials is provided in the oil tank.
[0010]
In one embodiment, the perforated container is connected to a rotating shaft, and the perforated container is configured to be rotatable by driving a motor.
[0011]
In one embodiment, the supply pipe is provided with a switching valve so that the heated oil in the supply pipe can be selectively supplied into the oil tank.
[0012]
In one embodiment, the storage tank has a storage tank for storing oil in the oil tank, the oil in the oil tank is sent into the storage tank through a connecting pipe, and the oil in the storage tank is stored in the oil tank. It is configured to be returned to
[0013]
Hereinafter, the operation of the present invention will be described.
[0014]
By extracting the oil in the oil tank from the discharge pipe and supplying the oil heated in the heat exchanger from the supply pipe into the oil tank, the oil heated to the desired temperature can be used as a food material in the oil tank. By supplying the oil to the periphery, the temperature of the oil around the food material can be maintained at a constant high temperature state.
[0015]
Further, by configuring the rotatable porous container in which the food material is accommodated, it is possible to obtain a finished food that is crisp by dropping oil adhering to the food by centrifugal force and reduce the pressure in the oil tank. By providing a decompression device, oxidation of oil can also be prevented.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
[0017]
As shown in FIGS. 1 to 3, a food frying apparatus 1 of the present invention includes an oil tank 11 containing cooking oil for frying a food material, and a discharge pipe 12 for discharging oil in the oil tank 11. And a heat exchanger 3 for heating oil in the discharge pipe 12, and a supply pipe 13 for supplying the oil heated by the heat exchanger 3 into the oil tank 11.
[0018]
The oil tank 11 has a serpentine tube 14 and a jacket 15, and is configured so that oil in the oil tank 11 can be heated by steam. In the oil tank 11, a basket 16 for storing food materials can be arranged, and a rotary shaft 20 for rotating the basket 16 is vertically long. The lower end of the rotating shaft 20 protrudes downward from the bottom surface of the oil tank 11 so that the rotating shaft 20 and the basket 16 attached to the rotating shaft 20 can be rotated by a motor 19 connected to the lower end.
[0019]
A discharge pipe 12 for discharging the oil in the oil tank 11 is connected to a lower portion of the oil tank 11, and a heat exchanger 3 for heating the oil in the discharge pipe 12 is connected to the discharge pipe 12. A supply pipe 13 for supplying the oil heated by the heat exchanger 3 into the oil tank 11 is provided. A switching valve 17 is provided on the supply pipe 13 so that the heated oil in the supply pipe 13 can be selectively supplied into the oil tank 11. The oil circulation path is thus formed, and the oil in the oil tank 11 passes through the discharge pipe 12 and the supply pipe 13 by operating the switching valve 17 to communicate the circulation pump 18 with the supply pipe 13. Circulate. That is, the oil pump 18 and the switching valve 17 are interposed in the supply pipe 13 between the heat exchanger 3 and the oil tank 11, and the operation of the switching valve 17 causes the heat exchanger 3 to operate at a predetermined temperature (usually around 120 ° C.). The heated oil can be supplied into the oil tank 11 as appropriate.
[0020]
The heated oil supply port 13a is provided at the top of the oil tank 11, and the heated oil is supplied into the basket 16 of the food material immersed in the oil.
[0021]
The oil tank 11 is connected to a pressure reducing device (not shown) via the valve 4 so that the pressure in the oil tank 11 can be reduced to a vacuum state at an appropriate time.
[0022]
The basket 16 is configured to be attached to or taken out of the oil tank 11 by a hoist (not shown).
[0023]
A storage tank 5 for storing oil in the oil tank 11 is connected to a lower portion of the oil tank 11 via a connection pipe 10. A return pipe 9 having a valve 7 and a filter device 8 is connected to the connection pipe 10. A pressure reducing device is connected to the storage tank 5, and the oil in the oil tank 11 is sent to the storage tank 5 via the connection pipe 10 or the oil in the storage tank 5 is transferred to the oil tank by operating the pressure reducing device and the valve 4. 11 can be returned through the return pipe 9.
[0024]
Next, a method of operating the food frying apparatus 1 of the present invention will be described.
[0025]
A basket 16 containing food materials such as frozen potatoes is placed in an oil tank 11 by a hoist. As the basket 16, for example, a metal container or a net basket provided with a large number of punching holes can be used.
[0026]
Next, the lid of the oil tank 11 is closed, and the inside of the oil tank 11 is evacuated. Then, the oil heated to an appropriate temperature is sent into the oil tank 11 from the storage tank 5 and the food material in the basket 16 is fried. Here, by operating the switching valve 17 and circulating the oil through the heat exchanger 3, the oil heated to a predetermined temperature by the heat exchanger 3 can be circulated and supplied into the oil tank 11. By supplying to the food material at the center of 11, the lowering of the oil temperature due to the food material can be prevented, and the food material can be fried at a desired temperature. The oil whose temperature has decreased can be heated in the circulation path as described above, and can also be heated by the jacket 15 and the flexible pipe 14 attached to the side wall of the oil tank 11.
[0027]
After the food material is fried for a predetermined time in this manner, the valve 7 is operated to send the oil in the oil tank 11 into the storage tank 5 and empty the oil tank 11.
[0028]
Next, the basket 19 is rotated by driving the motor 19, and the oil adhering to the food is removed by the centrifugal force. Thereafter, the pressure inside the oil tank 11 is returned to normal pressure, and the basket 16 is taken out of the oil tank 11.
[0029]
In this way, a food with a crisp finish can be obtained without oil entering the food.
[0030]
By repeating the above operation, the frozen potatoes are fried again.
[0031]
In the above embodiment, the heated oil is supplied into the basket 16 in the oil tank 11 from the supply port 13a at the top of the oil tank 11, but the heated oil is heated from the side wall of the oil tank 11 toward the vicinity of the basket. The supplied oil may be supplied.
[0032]
【The invention's effect】
According to the food frying apparatus of the present invention, the oil temperature around the food material can be prevented from suddenly lowering and frying can be performed at a desired temperature, so that the appearance is good and a large amount of oil adheres. Without any crisp, fried foods can be obtained.
[0033]
In addition, since the basket can be rotated, the pressure in the oil tank can be reduced, and the storage tank is provided, high-quality fried food can be repeatedly obtained.
[Brief description of the drawings]
FIG. 1 is a schematic view of a main part of an embodiment of a food frying apparatus of the present invention.
FIG. 2 is a schematic view showing a pipe connection of the food frying apparatus shown in FIG. 1 to a pressure reducing device.
FIG. 3 is a sectional view of a main part in an oil tank used in the food frying apparatus of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fried food apparatus 3 Heat exchanger 5 Storage tank 11 Oil tank 16 Basket

Claims (7)

An oil tank containing cooking oil for frying food ingredients,
A discharge pipe for discharging the oil in the oil tank, a heat exchanger for heating the oil in the discharge pipe, and a supply pipe for supplying the oil heated by the heat exchanger into the oil tank. Food frying equipment to have. 2. The food frying apparatus according to claim 1, further comprising a pressure reducing device capable of reducing the pressure in the oil tank. 2. The food frying apparatus according to claim 1, wherein the oil heated by the heat exchanger is supplied to a vicinity of food material in an oil tank. The food frying apparatus according to claim 1, wherein a perforated container for holding a food material is disposed in the oil tank. The food frying apparatus according to claim 1, wherein the perforated container is detachably connected to a rotating shaft, and the perforated container is configured to be rotatable by driving a motor. The food frying apparatus according to claim 1, wherein a switching valve is provided in the supply pipe so that the heated oil in the supply pipe can be selectively supplied into the oil tank. Having a storage tank for storing the oil in the oil tank, so that the oil in the oil tank is sent into the storage tank via the connecting pipe, and the oil in the storage tank can be returned to the oil tank. The food frying apparatus according to claim 1, which is configured.

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