JPS5917244Y2 - fly equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for automatically frying various foods using edible oil, that is, a frying device.

Some types of food require a step of frying in a high-temperature fryer and then a step of frying in a low-temperature fryer.

Conventionally, in a frying apparatus using two or more fryers having such temperature differences, separate fryer oil heating devices were required to control the temperature of the oil in each fryer independently.

In addition, conventional fryer oil heating devices have a drawback that, because of their low thermal efficiency, the film temperature inside the heat exchange pipe becomes extremely high, resulting in significant oxidation (deterioration) of the oil.

Therefore, the object of this invention is to provide a frying device in which one fryer oil heating device is provided for a plurality of fryers by using a fryer oil heating device with good thermal efficiency.

This invention will be described below based on embodiments shown in the accompanying drawings.

As shown in FIGS. 1 and 2, the fryer oil heating device A constituting the frying device of this invention has a bottomed cylindrical boiler outer wall 1 lined with refractory material, An exhaust port 2 is provided in a part.

Inside the boiler outer wall 1, there is provided an inner and outer double cylindrical pipe wall a, l) in which heat exchange pipes 3 and 6 are tightly wound vertically and spirally.

On the exhaust port 2 side of the inner cylindrical pipe wall a, every other vertically adjacent pipe 3 is bent inward as shown in FIG. 2 to form a bent part 4. A gap 5 is formed above and below.

In addition, on the side of the outer water pipe wall opposite to the exhaust port 2, every other vertically adjacent vibro is bent inward as shown in FIG. 2 to form a bent part 7. A gap 8 is formed above and below the bent portion 7.

A layer 9 of refractory material is also provided on the bottom of the outer wall 1 to close off the bottom of the firebox 10 in the inner pipe wall a.
The lower end of the cylindrical gap 11 between the inner and outer pipe walls a, l) and the cylindrical gap 12 between the outer pipe wall and the outer wall 1 is also closed.

Furthermore, the opening on the outer wall 1 is also closed with a fireproof lid 13, which closes off the firebox 10 and the upper end of the cylindrical gap 11, 12.

A burner 14 is fixed on the lid 13, and its spout 15 is directed into the firebox 10 from the central opening of the lid 13.

In addition, 16 is a support stand, and 17 is a supporting leg.

A return pipe 25 of a high-temperature oil circulation path X, which will be described later, is connected to the inlet side 20 of the heat exchange pipes 3 and 6, and a high-temperature oil supply pipe 22 is connected to the outlet side 21 of the heat exchange pipes 3 and 6.

The oil flows into the lower end of each pipe 3, 6 and
It is blown into the firebox 10 while passing through the gap 5,
It exchanges heat with the combustion gas passing through 8.11, becomes high-temperature oil, and exits to the supply pipe 21.

In the above action, the high temperature combustion gas blown into the firebox 10 flows from the numerous gaps 5 provided in the inner pipe wall a to the cylindrical gap 11 between the inner and outer pipe walls a, l).
Go inside and divide into left and right parts as indicated by the arrows in Figure 2, and then open the gap 11.
flows horizontally inside.

Therefore, the combustion gas also enters the recesses formed in the adjacent parts of the upper and lower pipes 3 and 6 and swirls, so that the pipe 3
Heat exchange between oil and combustion gas within 6°C is sufficient.

After that, the combustion gas that flows further from the gap 8 to the gap 12 on the outside of the outer pipe wall flows horizontally and exits from the exhaust port 2 while fully contacting the vibro, which is different from the conventional boiler of this type. It has the advantage of significantly higher thermal efficiency than those in which combustion gas flows only in the vertical direction.

Next, Figure 3 shows the above heating device A and fryers Bl and B.
2 is a flow sheet of the frying device of this invention, including the following.

The high-temperature fryer B1 and the low-temperature fryer B2 are close to each other or separated, and a common conveyor C is provided for each of the fryers B1 and B2.

The required workpieces are conveyed through the oil in each of the fryers B1 and B2.

The tip of the high temperature oil supply pipe 22 connected to the outlet side of the heating device A mentioned above is connected to the high temperature fryer B1, and the discharge pipe 23 connected to a certain height part of the fryer B1 is connected to the high temperature oil filter box 24. Furthermore, a circulation pump 26 is provided in the middle of a return pipe 25 connected to the filter box 24, and the return pipe 25 is connected to the inlet side of the heating device A. Discharge pipe 23 → filter box 24 → return pipe 2
5→circulation pump 26→return pipe 25→heating device A forms a high temperature oil circulation circuit X in this order.

Further, a temperature controller 27 is connected to the supply pipe 22,
This controls the temperature of the burner 14.

In addition, a low temperature oil supply pipe 2 is provided in the low temperature fryer B2.
8, and the discharge pipe 29 connected to a certain height part of the fryer B2 is connected to the low temperature oil filter box 30.
A return pipe 31 connected to the filter box 30 is connected to a low temperature circulation pump 33, and the pump 33 is connected to the supply pipe 28.

Therefore, a low temperature oil circulation circuit Y is formed in the order of circulation pump 33 → supply pipe 28 → low temperature fryer B2 → discharge pipe 29 → filter box 30 → return pipe 31 → circulation pump 33, and the high temperature supply pipe 22 is connected to the return pipe 31. A branch pipe 34 from is connected thereto.

A flow control valve 35 is provided in the middle of the branch pipe 34,
A temperature controller 36 connected to the low temperature supply pipe 28 controls the flow rate of the high temperature oil.

Note that the low temperature filter box 30 and the high temperature filter box 24 are connected by an overflow pipe 37.

Further, a fryer oil tank 38 is connected to the high temperature filter box 24 to replenish consumed oil.

The frying device of this invention uses a fryer oil heating device with good thermal efficiency as described above, and can circulate oil at high speed by forming a high-temperature oil circulation circuit and a low-temperature oil circulation circuit. Because of this, even a single heating device can control the film temperature inside the heat exchange pipe to an ideal temperature of about 180 to 190 degrees Celsius, which has the effect of eliminating the factors that cause oil deterioration. .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal cross-sectional view of a fryer oil heating device, FIG. 2 is a cross-sectional view thereof, and FIG. 3 is a flowchart of the device of this invention. A...Fryer oil heating device, B1...
...High temperature fryer, B2...Low temperature fryer, a...Inner cylindrical pipe wall, b...
Outer cylindrical pipe wall, 3, 6... heat exchange pipe,
5, 8..."...Gap, 26.23...Circulation pump, X...High temperature oil circulation path, Y...
...Low temperature oil circulation path.

Claims (1)

[Scope of utility model registration request] In a frying device having a fryer oil heating device A and two or more fryers Bl, B2 having different temperatures, the heat exchange pipes 3, 6 of the fryer oil heating device A are configured with double inner and outer cylindrical pipe walls a, l). The vertically adjacent pipes 3 constituting the inner cylindrical pipe wall a are bent appropriately to form a gap 5 between the upper and lower pipes 3 that communicates the inner cylindrical pipe wall a with the inside and outside. The vertically adjacent vibrators constituting the outer cylindrical pipe wall on the side opposite to the gap 5 are appropriately bent to form a gap 8 between the upper and lower vibrators that communicates the outer cylindrical pipe wall from inside to outside. heating device A,
A high-temperature oil circulation path X including a high-temperature fryer B1 and a circulation pump 26, and a low-temperature oil circulation path Y including a low-temperature fryer B2 and a circulation pump 33 are provided, respectively, and a branch pipe 34 is connected from the latter circulation path Y to the former circulation path X. A frying device characterized in that it is connected through.