JPH0634757Y2 - Oil tank heating device for tempura - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a heating device for a frying pan in a frying machine for continuously frying oil while moving the frying material in the trough.

(Prior art and its problems) This type of tempura lifter puts the tempura material shaped into a required shape from one end side into a horizontally long oil tank, and moves this tempura material to the other end side via a net conveyor or paddle conveyor. While frying, the oil is continuously fried.

Therefore, as a means for heating the oil in the oil tank, conventionally, a method of arranging gas burners at predetermined intervals on the lower surface side of the oil tank and performing heating by a gas flame of these many gas burners is generally used. . However, in such a method, the thermal energy cost is high due to the low thermal efficiency, and the heating temperature tends to be different between the vicinity of the burner and the distant position, and the heat exhausted from many burners causes the surroundings of the fryer. However, there was a problem that the work environment was deteriorated due to the remarkable heat.

A heating method in which a U-shaped or meandering heating tube is arranged in the oil tank and heat is exchanged between the combustion gas and the oil passing through the heating tube is also partially adopted, but in such a method However, the heat efficiency is insufficient, and in addition, the oil tank has to be deeper in order to dispose the heating pipe, which increases the amount of oil and increases the equipment cost.

In view of the above-mentioned circumstances, the present invention is excellent in heat heating, the heat energy cost is greatly reduced, uniform heating can be performed over the entire oil tank, the working environment is not deteriorated, and the equipment cost is low. The purpose is to provide a device.

(Means for Solving the Problem) The oil tank heating device for a deep frying machine according to the present invention is, as a means for achieving the above object, a horizontal oil tank for deep frying while moving a tempura material. And a closed heating chamber whose bottom is covered with a heat insulating material, and a linear heating tube with one end open and a gas burner attached to the other end is arranged in the heating chamber along the longitudinal direction thereof. Along with the installation, combustion gas injection holes are formed on the upper side of the heating pipe at a plurality of locations in the longitudinal direction, and an exhaust gas port is opened on the side of the heating chamber where the gas burner is installed. The structure is adopted so that the combustion gas discharged through the open end and the ejection hole is discharged into the heating chamber, and the discharged combustion gas is discharged through the exhaust gas outlet through the outer space of the heating pipe.

(Embodiment) Hereinafter, the present invention will be specifically described based on illustrated embodiments.

FIG. 1 shows a twin-type top-and-bottom lifter equipped with an oil tank heating device of the present invention. The lifter is a horizontally long primary oil tank 1 for storing oil at a relatively low temperature of, for example, about 130 ° C. 180
A horizontally long secondary oil tank 2 that can store oil at a relatively high temperature of about ℃
Are arranged in series, and the primary oil tank 1 has a net conveyor 3 along the bottom thereof, and the secondary oil tank 2 has a large number of paddle conveyors 4, 4 ... Is provided over almost the entire length of. 5 is both oil tanks 1, 2
Is an oil tank cover that covers the respective upper surface sides of the above, and is attached so as to be able to move up and down by a hydraulic cylinder 6 for cleaning and inspecting the inside of the oil tank. Reference numeral 7 is an oil smoke discharge cylinder projecting upward at both ends of each oil tank cover 5, 8 is an exhaust gas cylinder provided in each of the oil tanks 1 and 2, 9 is an auxiliary net conveyor arranged in the primary oil tank 1, 10 is a conveyor drive device for each oil tank 1, 2.

As shown in FIGS. 2 to 4, the primary and secondary oil tanks 1, 2
On each lower surface side, a sealed heating chamber 11 extending substantially over the entire length of each oil tank and a burner chamber 12 located outside one end thereof are provided. The heating chamber 11 has an upper surface side facing the bottom of the oil tank 1 or 2. Except for the side surface facing the heating chamber 11, the burner chamber 12 is covered with a heat insulating material 13 such as a fiber flux blanket.

In each heating chamber 11, a straight heating tube made of stainless steel or the like having a nozzle-shaped opening at one end 14a along the longitudinal direction thereof.
14 are provided, and as shown in FIG.
The flanged other end 14b, the end flange 15a of the burner jacket 15 arranged in the burner chamber 11, and the outer plate 11a of the heating chamber 11 are connected via a connecting bolt 16. The burner jacket 15 is equipped with a main burner 17 and a pilot burner 18, each of which has its tip protruding into the heating pipe 14, and the gas (usually LPG) of the main burner 17 is generated by the pilot burner 18 pilot fire.
The air is introduced from the air introduction port 15b through a combustion blower (not shown) to be mixed and ignited for combustion.

On the other hand, on the upper side of the heating pipe 14, a pair of combustion gas ejection holes 19, 19 are formed at required intervals in the longitudinal direction. Further, the exhaust gas port 8a forming the lower end opening of the exhaust gas cylinder 8 has a heating chamber 11
There is an opening at the end on the side where the burner is installed. The exhaust gas cylinder 8 is formed in a double cylinder shape, and the heat insulating material is provided between the inner and outer walls.
13 filled.

With the above configuration, most of the combustion gas of the main burner 17 passes through the inside of the heating pipe 14 and is discharged from the open end 14a to one end side inside the heating chamber 14, and a part of the combustion gas is above the ejection holes 19, 19 ... The combustion gas after being discharged to the inside of the heating pipe 14 moves in the direction opposite to the inside of the heating pipe 14 and is discharged to the outside from the exhaust gas port 8a through the exhaust gas pipe 8 in the process. It will heat one or two oils. Therefore, the high temperature combustion causes the open end 14 of the heating tube 14 to
Since the inside of the heating chamber 11 is always filled with the gas as it moves from the a to the exhaust gas port 8a, the oil tanks 1 and 2 are uniformly heated from the lower surface side. Further, generally, the temperature of the combustion gas is lowered toward the end of the passage, but in this case, in the heating cylinder 14, the temperature gradient becomes higher on the burner side, while the heating cylinder 14
Outside, since the temperature gradient becomes lower toward the exhaust gas port 8a side, the temperature difference between both ends in the heating chamber 11 is reduced by heat exchange between the combustion gas inside and outside the heating cylinder 14, and in addition, a large number of ejection holes are formed.
Since high-temperature combustion gas is also discharged and supplied from 19, 19, ...
The temperature in the upper part of the heating chamber 11 becomes substantially uniform.
Further, since the combustion gas is filled in the heating chamber 11 covered with the heat insulating material once and then discharged to the outside through the only exhaust gas port 8a,
The thermal efficiency becomes extremely high, and the heat release and heat radiation to the surroundings of the deep fryer are very small, and the working environment is greatly improved compared to the conventional one.

The frying process by the above-mentioned tempura frying machine is the same as the conventional one, and the tempura material shaped into the required shape is put into the primary oil tank 1 from one end side, and the tempura material is moved by the net conveyor 3 to carry out the primary frying. After that, it is sent to the secondary oil tank 2 and moved through the secondary oil tank 2 through the paddle conveyors 4, 4 ... While repeating floating and sinking to carry out secondary frying, and then taken out to obtain a product. It should be noted that all of these steps are performed automatically and continuously.

It should be noted that, in the above-mentioned embodiment, the dual type having the primary and secondary oil tanks 1 and 2 was mentioned as the deep fryer, but the present invention is also applicable to the oil tank heating device of the deep fryer having a single oil tank. Applicable.

(Effects peculiar to the invention) The oil tank heating device for a deep fryer according to the present invention allows the combustion gas of the gas burner to pass through a direct heating pipe provided in an adiabatic closed type heating chamber along the lower surface side of the oil tank, It is configured to be discharged into the heating chamber from one end thereof and an ejection hole in the middle, and the discharged combustion gas is moved in a direction opposite to the inside of the heating pipe through an outer space of the heating pipe and discharged from an exhaust port. Therefore, the thermal efficiency is extremely high, and the thermal energy cost can be greatly reduced compared to the conventional one, uniform heating can be performed over the entire oil tank, the deterioration of the work environment due to exhaust heat can be avoided, and the device configuration is extremely Because it is simple, there is an advantage that the equipment cost is low.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a front view of the whole deep frying machine, Fig. 2 is a sectional view taken along the line II-II of Fig. 1, and Fig. 3 is Fig. 1 is a sectional view taken along the line III-III in Fig. 1, Fig. 4 is a longitudinal rear view of a primary oil tank main portion, and Fig. 5 is a longitudinal front view of a gas burner portion. 1 ... Primary oil tank, 2 ... Secondary oil tank, 8a ... Exhaust gas port, 11
…… Heating chamber, 13 …… Insulation material, 14 …… Heating tube, 14a …… One end, 14b …… The other end, 17 …… Main burner (gas burner), 19 …… Combustion gas ejection hole.

Claims (1)

[Scope of utility model registration request] 1. A hermetically sealed heating chamber whose both sides and bottom are covered with a heat insulating material is provided along a lower surface of a horizontally long oil tank for frying while moving a tempura material, and the longitudinal direction thereof is provided in the heating chamber. A linear heating tube having one end opened and a gas burner attached to the other end is provided along the heating tube, and combustion gas ejection holes are formed at a plurality of longitudinal positions on the upper side of the heating tube. An exhaust gas port is opened on the side where the gas burner is installed in the heating chamber, and combustion gas from the gas burner passes through the heating pipe and is released from the open end and the ejection holes into the heating chamber, and the released combustion gas is heated. An oil tank heating device for a deep frying machine configured to be discharged from the exhaust gas port through the space outside the pipe.