JP5064834B2 - Flyer - Google Patents

Description

  The present invention relates to a fryer, and more particularly to a fryer that can save oil and has good maintainability.

  The fryer is a device that immerses food in a heated oil solution, heats it while being conveyed by a conveyor unit, and carries it out.

In the conventional flyer structure, as disclosed in Japanese Patent Laid-Open No. 2001-95694 (Patent Document 1) (particularly, paragraph [0010] and FIG. 1) , a heater is disposed between the conveyor unit and the bottom surface of the oil tank. Thus, the oil liquid was heated. In the fryer, during operation of the fryer, a small piece of food material such as bread crumbs, separated from the food material conveyed in the oil liquid, floats in the oil liquid, carbonizes, and then settles as a residue at the bottom of the oil tank Since it accumulates, it is necessary to clean the oil tank and periodically remove this residue.

  In the conventional fryer, since the heater is disposed in the oil tank, in order to clean the oil tank, it is necessary to remove the heater from the oil tank, remove the residue at the bottom, and then return the heater to a predetermined position without the oil tank. Thus, in the conventional structure which arrange | positions the conventional heater in an oil tank, there existed a problem that the maintenance which maintenance work, such as cleaning, becomes large-scale is troublesome. Further, since it is necessary to take out the heater for maintenance, there is a risk of burns or the like during the taking out operation.

  From another viewpoint, since the heater is arranged in the oil liquid, there is a disadvantage that the amount of oil increases accordingly.

Further, in the structure in which the heater is arranged in the oil tank, the oil liquid is directly heated, so that the deterioration of the oil liquid is accelerated, and the cost for the oil liquid is increased. In addition, when the oil liquid is directly heated, the temperature gradient in the oil liquid tends to increase, and the homogenization of the oil liquid in the oil tank is hindered.
JP 2001-95694 A

  As described above, since the conventional fryer has a structure in which the heater is directly disposed in the oil tank, there is a problem that maintenance is troublesome, such as a complicated cleaning operation of the oil tank. In addition, it is difficult to ensure homogenization of the temperature distribution of the oil temperature in the oil tank, which may adversely affect the quality of the heat-treated foodstuff. The present invention is configured in view of the circumstances as described above, and the maintenance of the apparatus is easy, the amount of oil can be reduced, contamination of the oil liquid and the like can be suppressed, and the oil tank An object of the present invention is to provide a fryer capable of promoting uniform temperature.

The fryer of the present invention comprises an oil tank that contains an oil liquid for heat-treating food materials,
A heating means that is disposed outside the oil tank and heats the food in the oil tank;
It is characterized by comprising a conveyor unit that carries in, transfers, and unloads food in the oil tank into the oil tank.

  Preferably, the heating means is an electric heater.

  The electric heater is preferably provided with a plurality of heater elements provided on the lower surface side of the bottom plate of the oil tank in parallel with each other at a predetermined interval and in a direction intersecting the transport direction. In this case, the heater element has a strip shape extending in the horizontal direction and has a flat upper surface, and the upper surface is disposed adjacent to the lower surface side of the bottom plate of the oil tank, and the heater is interposed via the bottom plate. Heat is transferred from the element to the oil in the oil tank.

  Furthermore, in a preferred embodiment, the heater element has an L-shape having a horizontal portion having the upper surface and a vertical portion extending downward from one end of the horizontal portion.

  Moreover, it can also comprise so that the upper surface of a heater element may closely_contact | adhere to the lower surface of the bottom plate of an oil tank.

  A sheet-like heat transfer plate may be interposed between the lower surface of the bottom plate of the oil tank and the upper surface of the heater element.

The oil tank has parallel and vertical side plates and a bottom plate extending horizontally so as to connect the lower ends of the both side plates, a front plate inclined downward so as to be connected to the bottom plate along the conveying direction,
A rear plate extending so as to continuously rise from the bottom plate along the conveying direction of the food.

  It is preferable that a heat transfer material is disposed so as to fill the space between the heater elements.

  The conveyor unit includes a transfer net for placing and transferring food in the oil liquid, and a transfer roller that rotates to send the transfer net in the direction of transfer of the food.

  The transport net is formed by braiding a metal wire, and in cooperation with the rotation of the transport roller, food is placed and transported in the transport direction.

  Preferably, the conveyor unit further includes a restraining net that holds food from above.

  In another aspect, the conveyor apron is disposed near the oil surface, and is attached to the support member extending along the food conveyance direction at a predetermined interval, and the conveyance apron extending vertically downward from the support member in the oil tank. And. In this case, the conveying roller can be disposed above the oil level without being immersed in the oil liquid.

  A conveyance apron is comprised with the metal wire, and pushes a foodstuff from the back in cooperation with rotation of the said conveyance roller, and is conveyed to a conveyance direction.

  As described above, according to the present invention, since the heater is disposed outside the oil tank, maintenance work is easy. In addition, the amount of oil can be set only with food heating in mind, and the amount of oil can be saved compared to the conventional structure. Also, the oil tank can be reduced in size. Further, oil contamination and deterioration can be improved as compared with the conventional fryer. Further, in the structure of the present invention, the bottom plate of the oil tank is heated over the whole, so that the temperature of the oil liquid in the oil tank can be made uniform as compared with the direct heating in the conventional oil tank, and the temperature controllability is improved. be able to.

  In addition, this can improve the accuracy of the heat treatment of the foodstuff, and contribute to improving the quality of the heat treatment.

  Examples of the present invention will be described below. FIG. 1 shows a fryer 1 according to one embodiment of the present invention. 1 is a plan view of the fryer 1, FIG. 2 is a front view, and FIG. 3 is a side view.

  The flyer 1 of this example includes a rectangular oil tank 2 in a plan view, and a rectangular control box 3 disposed behind the oil tank 2 so as to extend upward from the upper end of the oil tank 2. In the oil tank, a transport apron 5 is disposed that transports food (not shown) while pushing it in the oil solution. The transport apron 5 operates so as to transport food from left to right in FIG. A horizontally extending top plate 6 is disposed around the upper end of the oil tank 2. The lower part of the oil tank 2 of the fryer 1 is covered with an exterior plate 7. Further, at the lower front part of the fryer 1, there is provided a high cut thermo 8 for turning off the power when the temperature is higher than a predetermined temperature to prevent heating. From the back of the fryer 1, an operation power cable 9 for the control box and a heater are provided. A power cable 10 is extended. A spacer 11 is attached to the back of the fryer 1.

  FIG. 4 is a cross-sectional view of the oil tank 2. As shown in FIGS. 1 and 4, a plurality of transport aprons 5 are arranged at predetermined intervals in the transport direction. The transport apron 5 is attached to the horizontal member 12 provided so as to extend along the transport direction disposed near the oil surface and to the horizontal member 12 at a predetermined interval. The transport apron 5 extends in a direction crossing the transport direction, and transports the food material in the outlet direction while pushing the heat-treated food material immersed in the oil liquid 13 from behind.

  The apron 5 or vertical member in this example is arranged at a pitch of about 130 mm. The transport apron 5 is moved in the transport direction by the transport roller 14. At the bottom of the oil tank 2, a waste receiving basket is disposed. An oil drain valve 15 is provided at the corner of the bottom of the oil tank to discharge the oil in the oil tank. Horizontal height adjusting screws, that is, adjustments 16 provided at each of the four corners of the rectangular bottom surface of the oil tank are provided.

  As shown in FIG. 4, the oil tank includes both side plates 17 extending in parallel and vertically along the transport direction, a bottom plate 18 extending horizontally so as to connect the lower ends of both side surfaces, and a vertically lower side in front of the transport direction. A front plate 19 extending and a rear plate 20 extending so as to continuously rise from the bottom surface along the transport direction are provided. Further, as shown in FIG. 1, the transport apron 5 is rotated so as to move in the transport direction. A gear cover 21 is provided to cover the gear of the moving roller.

  As shown in FIG. 4, a front drive roller 14 for driving the transport apron 5 is provided above the oil surface in the vicinity of the front plate of the oil tank. Further, intermediate rollers 22 are provided in the vicinity of the oil tank 2 in contact with the oil surface of the front end portion and the rear end portion, respectively. In addition, a presser net 26 is provided between the pair of rollers 24 and 25 above the oil level in the middle of the oil tank 2 and close to the oil surface.

  An adhesive sheet 27 (in this example, “PERM-FOIL”, manufactured by Shinden Kogyo Co., Ltd.) is attached to the lower surface side of the bottom plate 18 of the oil tank, and a plurality of adhesive sheets 27 are attached to the lower surface via the adhesive sheet 27. Heater elements 28 are provided at predetermined intervals in the direction intersecting the food conveyance direction. Each heater element 28 has an oval cross section, and the upper surface is disposed in contact with the lower surface of the contact sheet, and is heated via a bottom plate that efficiently conducts heat.

  The outlet side of the oil tank is connected to an outlet shooter (not shown), and food such as croquettes transferred from the oil tank 2 by the transport apron 5 is sent out from the oil tank 2.

  As shown in FIG. 5, the heater element 28 of this example includes a heat-resistant electric wire 30 that accommodates a pair of conductive wires 29 extending in parallel to the inside. The heat-resistant electric wire 30, that is, a silicon glass wire, and a heat shrinkable tube 31 that covers the periphery thereof, that is, a silicon glass tube are provided. Further, a heat generating portion having a heat generating wire 32 is connected to the tip of the conducting wire. As shown in FIG. 6, the outside of the heater element 28 having an oblong cross section and extending in a strip shape is covered with a stainless steel sheath 33, and the inside of the sheath 33 is filled with magnesium oxide 34. Glass is disposed on the proximal end side of the sheath 33 as an encapsulant 35 and encloses the magnesium oxide 34. The heater 28 in this example has a rated voltage of 200 volts and a capacity of about 550 watts.

  As shown in FIG. 7, the upper surfaces of the heater elements 28 each extending in a band shape are in close contact with the lower surface of the oil tank via the contact sheet 27. Furthermore, as shown in FIG. 7, each heater element 28 is covered and integrated with a heat insulating material 36 (in this example, “fiber excel”) so as to cover the whole. By covering all of the heater elements 28 that are heating elements in this way, the heat from the heater is contained and efficiently transferred to the oil tank.

  The operation of the flyer 1 of this example will be described below.

  Ingredients such as croquettes are carried from the front of the oil tank. The transport apron 5 moves while pushing the food being heated in the oil liquid at a predetermined speed in the transport direction. Depending on the temperature of the oil tank set at a predetermined temperature, the food that moves in the oil liquid at a predetermined speed by the heat treatment apron 5 is processed in accordance with the movement in the oil tank along the conveying direction. Then, as the heat treatment proceeds, it is sent out by being pushed by the transport apron 5 toward the outlet shooter. When it is delivered from the oil tank, the heat treatment of the food is completed. In this case, the time during which the food material is immersed in the oil liquid is set so that the desired heat treatment is performed on the food material. Based on this time, the moving speed of the transport apron 5, that is, the rotation of the transport roller 14 is set. The speed is adjusted.

  In addition, during the use of the fryer 1, food fragments, bread crumbs, and the like peeled off from the food to be heat-treated float, and then carbonize and precipitate as scum while immersed in a high-temperature oil solution. However, if left untreated, the residue adheres to the bottom plate 18 of the oil tank 2 or contaminates the oil as a suspended substance, which adversely affects the heat treatment of the food.

  For this reason, the oil tank 2 of the fryer 1 needs to be cleaned at a predetermined cycle to remove the above debris from the oil tank. Cleaning is performed by removing the transport apron and removing the residue accumulated at the bottom. The residue can be removed from an oil discharge valve provided at the bottom of the oil tank. Moreover, it is necessary to change oil as needed.

  Cleaning is performed by removing the transport apron 5 and removing the residue accumulated at the bottom. According to the structure of this example, since the heater is not disposed in the oil tank 1, cleaning can be easily performed and the cleaning effect can be enhanced. This can slow the progress of oil contamination.

  Hereinafter, another embodiment of the present invention will be described with reference to FIG.

  In this example, a transport net 37 is provided instead of the transport apron as a means for transporting food. As in the previous example, the transport net is driven to load the food and move the transport net in the transport direction so that the transport net moves in the transport direction. Conveying rollers 44 and 45 and intermediate rollers 46 and 47 are disposed.

  Also in this example, since the heater is arranged outside the oil tank as in the case of using the transport apron 5, the maintenance of the fryer 1 is easy, the apparatus can be downsized and the amount of oil can be reduced. And contamination of oil can be reduced.

FIG. 2 is a plan view of a fryer according to one embodiment of the present invention; FIG. 1 is a front view of the flyer of FIG. Side view of the flyer of FIG. Sectional drawing of the oil tank concerning the Example of this invention, Detailed view of a partially broken plan view of the heater element, End view of the heater element, Cross section of oil tank, It is sectional drawing of the oil tank concerning another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flyer 2 Oil tank 3 Control box 5 Carrying apron 6 Top plate 7 Exterior plate 8 High cut thermo 9 Operation power cable 10 Power cable 12 Horizontal member 13 Oil liquid 14 Carrying roller 15 Oil drain valve 16 Adjustment 17 Side plate 18 Bottom plate 19 Front plate 20 Rear Plate 21 Gear cover 22, 23 Intermediate roller 24, 25 Roller 26 Presser net 27 Adhesive sheet 28 Heater element 29 Conductor wire 30 Heat resistant wire 31 Heat shrinkable tube 32 Heating wire 33 Sheath 34 Magnesium oxide 35 Encapsulant 36 Heat insulator 37 Transport net 38, 39 Conveying rollers 40 and 41 Intermediate roller 42 Presser nets 44 and 45 Conveying rollers 46 and 47 Intermediate rollers

Claims (10)

An oil tank for storing an oil solution for heat-treating the ingredients;
Heating for heating the food in the oil vessel with an electric heater having a heater element which is provided side by side a plurality in the direction intersecting the parallel and the transport direction each other at predetermined intervals on the outer side of the bottom plate bottom surface of the oil tank Means ,
In order to increase the thermal efficiency of the heating means, a heat transfer sheet interposed between the bottom surface of the bottom plate of the oil tank and the top surface of the heater element and attached to the bottom surface of the bottom plate of the oil tank ,
The fryer provided with the conveyor unit which carries in the foodstuff in the said oil tank in an oil tank, transfers, and carries it out. The heater element has an upper surface extending in a horizontal direction, the upper surface is disposed adjacent to the lower surface side of the bottom plate of the oil tank, and transfers heat from the heater element to the oil liquid in the oil tank via the bottom plate. The flyer according to claim 1 . The fryer according to claim 1 or 2 , wherein the heater element has an L-shape having a horizontal portion having the upper surface and a vertical portion extending downward from one end of the horizontal portion. A bottom plate extending horizontally so that the oil tank is connected to both parallel and vertical side plates and a lower end portion of the both side plates, a front plate inclined downward so as to be connected to the bottom plate along the conveying direction;
The flyer according to any one of claims 1 to 3, further comprising a rear plate extending so as to continuously rise from the bottom plate along a conveying direction of the food material. The flyer according to any one of claims 1 to 4 , wherein a heat transfer material is disposed so as to fill a space between the heater elements. A transport network which the conveyor unit is transferred by placing the food oil solution, claims 1, characterized in that it comprises a conveying roller that rotates to feed the conveying net food transport direction 5 The flyer according to any one of the above. 7. The transport net according to claim 6 , wherein the transport net is formed by braiding a metal wire, and food is placed and transported in the transport direction in cooperation with the rotation of the transport roller. Flyer. The fryer according to any one of claims 1 to 7 , wherein the conveyor unit further includes a restraining net that holds food from above. The conveyor unit is disposed in the vicinity of the oil surface, and includes a support member extending along the food conveyance direction, a support apron attached to the support member at a predetermined interval, and a conveyance apron extending vertically downward from the support member in the oil tank. The flyer according to any one of claims 1 to 5 , wherein The transport apron is composed of a metal wire, in cooperation with rotation of the conveying rollers, that is adapted to transport in the transport direction by pushing from behind the ingredients in an oil solution to claim 9, wherein The described flyer.

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