JP4676020B1 - Flyer - Google Patents

Abstract

[PROBLEMS] To pay attention to the fact that the water supply and drainage of an aquifer can be achieved without generating a flow field in the oil reservoir, and without using special equipment and mechanisms. By specifying the flow rate and the positional relationship, a technique for preventing the occurrence of emulsification and improving the sedimentation property and cooling efficiency of the fried residue is provided.
An internal shape and dimensions of a storage tank container are formed in a fryer in which an upper oil layer and a lower water layer are formed by a specific gravity difference between water and oil in the storage tank container, and an electric heater is disposed in the oil layer. A flyer characterized in that the inner diameter of the cooling water supply port to the water layer, the boundary surface between the oil layer and the water layer, the position of the cooling water supply port 31 from the inner wall side surface of the storage tank 30, and the flow rate are specified under predetermined conditions. It was.
[Selection] Figure 1

Description

  The present invention relates to an electric fryer used for cooking such as tempura and fried chicken. More specifically, in an electric fryer for forming an upper oil layer and a lower water layer, a flow of vortex or the like flows in the upper oil layer when circulating cooling water. The present invention relates to a technique for preventing the occurrence of emulsification (emulsion: Emulsion) and improving the sedimentation property and cooling efficiency of the frying residue by preventing the production of a field.

  In the fryer, when the temperature of the oil becomes high, not only does it become impossible to make fried foods such as tempura and fried chicken, but also danger of explosion. Therefore, it can be said that temperature control of the oil layer in the fryer is extremely important.

  Among the flyers currently used for commercial purposes such as tempura and fried chicken, an upper oil layer and a lower water layer are formed in one storage tank due to the difference in specific gravity between water and oil. Some have been used to adjust the temperature of the oil layer using the above heater. This configuration reduces the amount of oil used in the entire system, enables cost reduction, greatly extends the life of the oil, and contaminates the oil when the frying residue accumulates in the oil. Not only because it sticks to the deep-fried food, but makes the color, taste and aroma worse. Moreover, there is also a reason for improving the air-conditioning environment of the kitchen, by making fine carbides sink in water by reducing the temperature difference between the upper and lower sides, reducing the generation of smoke.

  However, in the electric fryer employing the two-layer structure of the oil layer and the water layer, due to the structure, a flow field such as a vortex is generated in the oil layer when the cooling water is circulated, A third layer in which water is emulsified is formed. The presence of this third layer (hereinafter referred to as an emulsified layer) causes the sedimentation of the fried residue. That is, in a fryer employing a two-layer structure of an oil layer and an aqueous layer, a flow field such as a vortex is not created in the boundary region between the oil layer and the aqueous layer, and the stable state of the oil layer is maintained while maintaining the stable state of the oil layer. It is important how to circulate cooling water while minimizing formation.

  Therefore, conventionally, techniques for preventing such emulsification have been proposed. For example, a component that suppresses oil degradation is dissolved in water, a water supply port and a drain port are provided in the lower region of the storage tank, and the functional water is supplied from the water supply port into the storage tank, and the functional water is drained. A flyer provided with means for discharging from the mouth to the outside and means for controlling the supply amount of functional water into the storage tank and the discharge amount from the storage tank (see Patent Document 1). According to such a technique, there is little influence on the oil layer located above the water layer, and the oil deterioration preventing function can be maintained. However, since both the water supply port and the drain port are located in the lower region, the low-temperature water supplied has a large specific gravity, and it is difficult to circulate to the high-temperature region with a small specific gravity that forms the upper part of the water layer. There is a disadvantage of poor circulation efficiency. Moreover, such a technique cannot solve the problem that the emulsified layer becomes thick as the use continues. Furthermore, there is a problem that an alkaline electrolyzed water production apparatus or the like is required for the electrolysis of functional water, which is costly.

  In addition, the water in the water layer is sucked from the water inlet provided in the center of the bottom of the storage tank, and the water is supplied from the water supply port provided in the horizontal direction near the side wall of the lower part of the storage tank from the center to the horizontal direction There is also a flyer configured to rotate the water in the storage tank in a spiral shape by discharging in a direction away from it (see Patent Document 2). This technology rotates the water in the water layer or the lower part of the oil layer into a large vortex, enhances the heat exchange between the heater and oil disposed in the oil layer, and the temperature of the cooking oil does not easily deteriorate during standby. It is understood that it aimed at various effects such as keeping. However, since the oil layer is rotated, a speed difference occurs between the boundary layer between the oil layer and the water layer with different viscosities and specific gravity, and shear force is generated in the boundary layer, resulting in frictional resistance and emulsification. There is a problem of letting you.

  Furthermore, the technology relating to the commercial fryer includes various technologies (see Patent Document 3) for the purpose of providing a fryer capable of preventing the deterioration of cooking oil and ensuring a good cooking environment and improving work efficiency. Technology is provided. However, none of the techniques focuses on the point of preventing the occurrence of emulsification, and has not yet solved the above problems.

JP 2005-102783 A JP 2007-275145 A JP 2009-238797 A

  Therefore, the inventor of the present invention observes the flow of the water layer portion and the oil layer portion in the fryer and the movement of the fried debris that settles, and under what conditions the flow field is not generated in the oil layer. Focusing on the possibility of water supply and drainage in the water layer, a number of experiments were repeated by changing the flow rate of the water supply and drainage and the position of the water supply port with respect to the boundary position between the oil layer and the water layer.

The present invention was made on the basis of the idea and experimental results completely different from the prior art, and by specifying the flow rate and positional relationship of water supply / drainage without using special equipment or mechanisms, the occurrence of emulsification can be achieved. It aims at providing the technique which improves the sedimentation property and cooling efficiency of fried dregs while preventing.

  In order to achieve the above-mentioned object, the present invention provides an internal shape of a storage tank in a fryer in which an upper oil layer and a lower water layer are constituted by a specific gravity difference between water and oil in the storage container, and an electric heater is disposed in the oil layer. Are substantially square in the horizontal direction, and the dimensions are within a range of 380 mm to 800 mm on one side and 360 mm to 600 mm on the other side, and the inner diameter of the cooling water supply port to the water layer is 9.2 mm to 27.27. The center position of the cooling water supply port to the water layer is 6 mm below the boundary surface between the oil layer and the water layer, and the center position of the cooling water supply port to the water layer is the storage tank. A configuration in which the cooling water flow rate is within a range of 6 liters / minute to 14 liters / minute is employed within a range of 20 mm to 40 mm from the inner wall side surface of the container.

  Further, according to the present invention, in the fryer in which the upper oil layer and the lower water layer are configured by the difference in specific gravity between water and oil in the storage tank, and the electric heater is disposed in the oil layer, the internal shape of the storage tank is substantially horizontal. A square is formed, and the dimensions are within the range of 380 mm to 800 mm on one side, 360 mm to 600 mm on the other side, and the inner diameter of the cooling water supply port to the water layer is within the range of 9.2 mm to 27.6 mm. And the center position of the cooling water supply port to the water layer is within the range of 8 mm to 30 mm below the boundary surface between the oil layer and the water layer, and the center position of the cooling water supply port to the water layer is the storage tank A configuration in which the cooling water flow rate is within a range of 6 liters / minute to 15 liters / minute is employed within a range of 15 mm to 50 mm from the side surface of the inner wall of the container.

  Further, according to the present invention, in the fryer in which the upper oil layer and the lower water layer are configured by the difference in specific gravity between water and oil in the storage tank, and the electric heater is disposed in the oil layer, the internal shape of the storage tank is substantially horizontal. A square is formed, and the dimensions are within the range of 380 mm to 800 mm on one side, 360 mm to 600 mm on the other side, and the inner diameter of the cooling water supply port to the water layer is within the range of 9.2 mm to 27.6 mm. And the center position of the cooling water supply port to the water layer is within a range of 35 mm to 40 mm below the boundary surface between the oil layer and the water layer, and the center position of the cooling water supply port to the water layer is the storage tank A configuration in which the cooling water flow rate is within a range of 6 liters / minute to 14 liters / minute was employed within a range of 15 mm to 50 mm from the inner wall side surface of the container.

  Further, according to the present invention, in the fryer in which the upper oil layer and the lower water layer are configured by the difference in specific gravity between water and oil in the storage tank, and the electric heater is disposed in the oil layer, the internal shape of the storage tank is substantially horizontal. A square is formed, and the dimensions are within the range of 380 mm to 800 mm on one side, 360 mm to 600 mm on the other side, and the inner diameter of the cooling water supply port to the water layer is within the range of 9.2 mm to 27.6 mm. And the center position of the cooling water supply port to the water layer is 45 mm below the boundary surface between the oil layer and the water layer, and the center position of the cooling water supply port to the water layer is from the side surface of the inner wall of the storage tank A configuration in which the cooling water flow rate is in the range of 15 to 50 mm and the cooling water flow rate is in the range of 7 to 14 liters / minute is adopted.

  According to the flyer according to the present invention, a flow field such as a vortex is not created in the oil layer by specifying the center position and flow rate of the cooling water supply port. Therefore, since emulsification of water and oil can be suppressed, the third emulsified layer generated in the boundary region between the oil layer and the water layer can be kept extremely thin. As a result, it is possible to eliminate the stagnation of the fried residue in the emulsified layer, and it is less affected by the fried residue remaining in the oil layer and can prevent the cooking oil from deteriorating, making the oil change cycle longer and economical. There is an excellent effect.

  In addition, since the fryer according to the present invention uses a water-cooled type for cooling the oil layer, the cooling efficiency is higher than that of an air-cooled type fryer in which pipes or the like are disposed in the oil layer. Is supplied immediately below the boundary surface between oil and water, so that the cooling efficiency of the low temperature layer in the oil layer located between the boundary surface in contact with water and the electric heater is extremely high.

  Further, according to the flyer according to the present invention, no complicated structure or special device is required to obtain the various effects described above, and it can be implemented with a simple structure, so that the manufacturing cost can be reduced. Has an effect.

  Further, according to the flyer of the present invention, the cooling water is replenished by the water level sensor with the boundary surface maintained at a constant level, and further, a wave is generated in the oil layer immediately below the boundary surface between the oil and water. The water is replenished gently so that the water in the highest water temperature region in the water layer is safely heated without the danger of suddenly being heated by the heat in the high temperature region of the oil layer and generating water vapor. Play.

  The flyer F according to the present invention sets the center position of the cooling water supply port 31 to the water layer B within a predetermined range below the boundary surface between the oil layer A and the water layer B, and supplies the cooling water to the water layer B. The main features are that the center position of the mouth 31 is located within a predetermined range from the inner wall side surface of the storage tank container, and the cooling water flow rate is within the predetermined range. Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a schematic explanatory view showing the structure of a flyer F according to the present invention. The storage tank container 30 contains the oil 10 and the water 20, and constitutes an oil layer A in the upper part and a water layer B in the lower part due to the difference in specific gravity. The internal shape is substantially square in the horizontal direction, and the length X of one side and the length Y of the other side inside the storage container are formed within the range of X from 380 mm to 800 mm and Y from 360 mm to 600 mm. Further, the bottom is preferably formed in a funnel-like shape in order to improve the discharge of the fried residue and to improve the circulation of the water 20 by convection. Although it does not specifically limit about a raw material, It is excellent in heat resistance and corrosion resistance, and uses a raw material harmless to a human body as a cooking machine. For example, austenitic stainless steel with a low nickel content can be considered.

  Further, a water supply port 31 for supplying the cooling water 20 and an oil discharge port 33 for discharging the oil 10 are provided on the side wall of the storage tank 30, and a drain for discharging the cooling water 20 is provided at the bottom. An outlet 32 is provided. Furthermore, a water level sensor 40 is provided in the storage tank 30 to keep the upper surface of the water layer B at a constant position.

  Cooling water circulation is drained from the drain port 32, drained from the settling tank 50 to the waste receiving tray 120, cooling water supplied from the settling tank 50 via the pump 70, and replenished from the water. The flow rate of the makeup water to be supplied is controlled by the electric ball valve 100, the electromagnetic valve 101, and the stop valve 90. In the figure, “1/2”, “3/8”, “3/4”, and “1B” are nominal diameters. The stop valve 90, the angle valve 110, the reducer 160, the check valve 120, the strainer 150, the electric ball valve 100, the electromagnetic valve 101, the air vent tank 60, the sedimentation tank 50, the water pipe, the joint, etc. that are used are general. What is necessary is just to use what is used for the cooling water 20 circulation path of an electric fryer, and it does not specifically limit. The discharged cooling water 20 is processed through the waste receiving tray 120 and the grease trap 130.

  The flow rate of the water supply port 31 is determined by its cross-sectional area (flow rate = flow rate / cross-sectional area), but the inner diameter of the water supply port 31 according to the present application is in the range of 9.2 mm to 27.6 mm.

  Although not shown, an electric heater is used to heat the oil layer A, and the oil layer A is disposed in the oil layer A, and the temperature of the oil 10 in the oil layer A is controlled by a temperature sensor.

  FIG. 2 is a position explanatory view of the cooling water supply port 31 according to the present invention, FIG. 2 (a) is a plan view, and FIG. 2 (b) is a front view. The internal shape of the storage tank 30 is substantially square in the horizontal direction. For the sake of explanation, the oil layer is A, the water layer is B, the emulsification layer is C, the length of one side inside the storage tank is X, and the length of the other side. Let Y be the distance, W be the distance from the boundary surface to the center position of the cooling water supply port, and Z be the distance from the inner wall side surface of the storage tank container to the center position of the cooling water supply port.

  3 to 12 are data tables showing the state of the oil reservoir A according to the cooling water supply position and the flow rate according to the present invention. The experiment was performed within a range of W from 6 mm to 45 mm, Z from 10 mm to 55 mm, and a flow rate from 3 liters / minute to 17 liters / minute. “◎” indicates that there is no movement in the oil layer A, “◯” indicates that the oil layer A has moved slightly, and “●” indicates that the oil layer A has moved. In addition, as a result of changing the length X of one side and the length of the other side inside the storage container in various ways, the same result was obtained when X was in the range of 380 mm to 800 mm and Y was in the range of 360 mm to 600 mm. . Accordingly, the length X of one side inside the storage container is formed within a range of 380 mm to 800 mm, and Y is within a range of 360 mm to 600 mm.

  FIG. 3 shows the experimental results when W is 6 mm, and there is no movement in the oil layer A when Z is in the range of 20 mm to 40 mm and the flow rate is in the range of 6 liters / minute to 14 liters / minute. The invention which concerns on Claim 1 was made | formed based on the experimental result which concerns, and arranges the water supply port 31 in the range which concerns.

  4 shows the experimental results when W is 8 mm, FIG. 5 shows 10 mm, FIG. 6 shows 15 mm, FIG. 7 shows 20 mm, FIG. 8 shows 25 mm, and FIG. 9 shows 30 mm. The oil layer A does not move at all when Z is in the range of 15 to 50 mm and the flow rate is in the range of 6 to 15 liters / minute. The invention according to claim 2 is made on the basis of the experimental result, and the water supply port 31 is disposed within the range.

  10 shows the experimental results when W is 35 mm, and FIG. 11 shows the experimental results when W is 40 mm. The oil layer A does not move at all in the range of Z from 15 mm to 50 mm and the flow rate from 6 liters / minute to 14 liters / minute. Absent. The invention according to claim 3 is made on the basis of the experimental result, and the water supply port 31 is arranged within the range.

  FIG. 12 shows the experimental results when W is 45 mm, and there is no movement in the oil layer A when Z is in the range of 15 to 50 mm and the flow rate is in the range of 7 to 14 liters / minute. The invention according to claim 4 is made on the basis of the experimental result, and the water supply port 31 is arranged within the range.

Schematic explanatory drawing which shows the structure of the fryer which concerns on this invention. The cooling water supply position explanatory drawing which concerns on this invention. The data table which shows the oil layer state by the cooling water supply position and flow volume which concern on this invention. The data table which shows the oil layer state by the cooling water supply position and flow volume which concern on this invention. The data table which shows the oil layer state by the cooling water supply position and flow volume which concern on this invention. The data table which shows the oil layer state by the cooling water supply position and flow volume which concern on this invention. The data table which shows the oil layer state by the cooling water supply position and flow volume which concern on this invention. The data table which shows the oil layer state by the cooling water supply position and flow volume which concern on this invention. The data table which shows the oil layer state by the cooling water supply position and flow volume which concern on this invention. The data table which shows the oil layer state by the cooling water supply position and flow volume which concern on this invention. The data table which shows the oil layer state by the cooling water supply position and flow volume which concern on this invention. The data table which shows the oil layer state by the cooling water supply position and flow volume which concern on this invention.

10 Oil 20 Water 30 Storage tank 31 Water supply port 32 Drainage port 33 Oil discharge port 40 Water level sensor 50 Precipitation tank 60 Air venting tank 70 Pump 80 Motor 90 Stop valve 100 Electric ball valve 101 Electromagnetic valve 110 Angle valve 120 Check valve 130 Cas Receiving tray 140 Grease trap 150 Strainer 160 Reducer A Oil layer B Water layer C Emulsification layer W Distance from the boundary surface to the center of the cooling water supply port X Length of one side inside the storage tank Y Length of one side inside the storage tank Z Distance from the inner wall side surface of the storage tank to the center of the cooling water inlet F Flyer

Claims (4)

  In a fryer in which an upper oil layer and a lower water layer are constituted by a specific gravity difference between water and oil in the storage tank, and an electric heater is disposed in the oil layer, the internal shape of the storage tank forms a substantially square shape in the horizontal direction, The dimensions are in the range of 380 mm to 800 mm on one side, 360 mm to 600 mm on the other side, the inner diameter of the cooling water supply port to the water layer is in the range of 9.2 mm to 27.6 mm, and the water layer The center position of the cooling water supply port to the water layer is 6 mm below the boundary surface between the oil layer and the water layer, and the center position of the cooling water supply port to the water layer is within the range of 20 mm to 40 mm from the inner wall side surface of the storage tank And a cooling water flow rate in the range of 6 liters / minute to 14 liters / minute.   In a fryer in which an upper oil layer and a lower water layer are constituted by a specific gravity difference between water and oil in the storage tank, and an electric heater is disposed in the oil layer, the internal shape of the storage tank forms a substantially square shape in the horizontal direction, The dimensions are in the range of 380 mm to 800 mm on one side, 360 mm to 600 mm on the other side, the inner diameter of the cooling water supply port to the water layer is in the range of 9.2 mm to 27.6 mm, and the water layer The center position of the cooling water supply port to the water layer is within a range of 8 to 30 mm below the boundary surface between the oil layer and the water layer, and the center position of the cooling water supply port to the water layer is 15 mm from the inner wall side surface of the storage tank And a cooling water flow rate in the range of 6 liters / minute to 15 liters / minute.   In a fryer in which an upper oil layer and a lower water layer are constituted by a specific gravity difference between water and oil in the storage tank, and an electric heater is disposed in the oil layer, the internal shape of the storage tank forms a substantially square shape in the horizontal direction, The dimensions are in the range of 380 mm to 800 mm on one side, 360 mm to 600 mm on the other side, the inner diameter of the cooling water supply port to the water layer is in the range of 9.2 mm to 27.6 mm, and the water layer The center position of the cooling water supply port to the water layer is within a range of 35 mm to 40 mm below the boundary surface between the oil layer and the water layer, and the center position of the cooling water supply port to the water layer is 15 mm from the inner wall side surface of the storage tank The flyer is located in the range of 50 mm to 50 mm and the cooling water flow rate is in the range of 6 liters / minute to 14 liters / minute.   In a fryer in which an upper oil layer and a lower water layer are constituted by a specific gravity difference between water and oil in the storage tank, and an electric heater is disposed in the oil layer, the internal shape of the storage tank forms a substantially square shape in the horizontal direction, The dimensions are in the range of 380 mm to 800 mm on one side, 360 mm to 600 mm on the other side, the inner diameter of the cooling water supply port to the water layer is in the range of 9.2 mm to 27.6 mm, and the water layer The center position of the cooling water supply port to the water layer is 45 mm below the boundary surface between the oil layer and the water layer, and the center position of the cooling water supply port to the water layer is within the range of 15 mm to 50 mm from the inner wall side surface of the storage tank And a cooling water flow rate in the range of 7 liters / minute to 14 liters / minute.

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