JP4117521B2 - Horizontal rotary cylindrical continuous stirrer with exhaust hot air introduction type - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a fried food that continuously and efficiently performs stir-cooking as a pretreatment of fried foods such as fried noodles, fried rice, pilaf, scrambled eggs, butterflyfish, stir-fried vegetables, and fried onion, sofrit, meat, seafood, etc. Relates to the device.
[0002]
[Prior art]
Conventionally, as a device for fried foods and food preparation as a pretreatment of food production, (1) a flat pot type stirrer with a stirrer, (2) a batch type rotary stirrer, and (3) a batch type rotary stirrer And (4) a rotary continuous frying machine in which protrusions are arranged in a spiral shape on the inner surface of a horizontal rotary cylinder.
[0003]
(1) The flat pot type stirrer with a stirrer is the most commonly used stirrer, and it is a type that stirs the bottom of the pan with gas and mixes the stir material with the stirrer. Only the amount of stir-fried ingredients can be applied. If a lot is applied at once, the temperature of the kettle will drop sharply, and it will take some time for the temperature to recover. It may become the state like this.
[0004]
That is, in a batch-type stirrer, the temperature of the kettle drops drastically when stir-fry material is put in, so that a large amount cannot be put at once and the production capacity per unit is low, and manpower is required to put in and out the stir-fry material. In batch mode, the heat load changes greatly at the start and end of processing, so the person must be attached to manage the temperature of the wall. In addition, the opening is large, the amount of exhaust of the hood is increased accordingly, and the air conditioning load is also increased. For mass production, a large number of pots must be arranged, and a large installation space is required.
[0005]
(2) A batch-type rotary stir-fry pot is rotated with a round bottom, open at the top, and a cylinder with one or two scraping blades on the inner wall held diagonally to prevent spilling. This is a system in which the outer peripheral portion is heated by gas-fired while repeating the material scraping, dropping, dispersion and mixing, but has the disadvantage of being batch-type like (1).
[0006]
(3) As described in Japanese Utility Model Laid-Open No. 62-83323, a batch-type rotary stirrer in which a blowout port for hot air indirectly heated by combustion gas or combustion gas is provided at the bottom of the rotary drum, 2) Although it is improved in terms of energy efficiency and processing quality compared to the rotary stirrer, it still has the drawbacks of the batch method described above. In addition, there is a problem that it is difficult to control the temperature of the hot air because the heat load changes greatly at the initial stage and at the end of the process.
[0007]
(4) As proposed in Japanese Patent Laid-Open No. 6-189855, the continuous food frying machine is provided with a cylindrical drum in an inclined shape, and an inlet is provided in the upper opening and a discharge opening is provided in the lower opening. , A stirrer that spirally arranges protrusions on the inner peripheral surface of the copper part, rotates the drum, heats the outer peripheral surface, and cooks continuously. Heat transfer to the material relies only on the inner wall surface of the cylinder, the heat load per inner wall area is large, and naturally there is a lot of charring, and there remains a problem for long-term continuous operation. In addition, it is structurally easy for vapor to accumulate in the cylinder, and the moisture of the material is difficult to evaporate, which causes problems in the evaporation capability and the quality of the processed product.
[0008]
[Problems to be solved by the invention]
In order to improve the disadvantages of the conventional batch stirrer and continuous stirrer described above, the present invention introduces combustion exhaust hot air into the horizontal rotary cylindrical continuous stirrer, thereby improving the processing speed and mass continuous length. It aims to achieve time operation, improve energy efficiency, improve the quality of stir-fried products, and save labor and space.
[0009]
[Means for Solving the Problems]
As a result of intensive studies to solve the problems of the above-described prior art and devices, the present inventors have determined the amount of escape to the exhaust hot air bypass line and the amount of fresh air introduced into the horizontal rotary cylindrical continuous stirrer. By introducing combustion exhaust hot air whose temperature and air volume can be varied over a wide range by adjusting means (damper), in addition to contact heat transfer with the wall surface of the conventional method, a forced convection heat transfer effect by hot air can be obtained. By quickly raising the temperature of the stir-fried material and evaporating / drying it , the scraper blades are attached to the inner wall of the cylinder, and the loosening lattice is attached to the position where the scraped material falls. even when fry dumpling shape tends material during rotation, mixing, transfer, such as objects, found Rukoto can fry without being bunching, thereby completing the present invention. According to the present invention, the effect is further promoted by bringing the hot air and the stir-fried material into opposite flow, that is, so-called countercurrent contact. In addition, since it does not rely only on contact heat transfer on the inner wall of the cylinder, the heat load per wall area can be reduced, the degree of scorching on the wall surface can be significantly reduced, and long-term continuous operation is possible. Furthermore, by using this high-efficiency and high-capacity stirrer and continuously mass-producing them, significant labor and space savings can be achieved. In addition, the fuel consumption can be reduced by effectively using the heat energy of the exhaust hot air, and the local exhaust amount by the hood can be reduced by minimizing the opening, so that the air conditioning load can be reduced. Energy saving can be achieved. In terms of quality, the hot air effect can efficiently remove moisture from the processed product in a short period of time, and it can be used in a drip-free material such as rice, which tends to form dumplings during rotation, mixing and transfer. Even when fried , a high-quality fried product can be obtained without forming a dumpling . Regarding the variability of the operating conditions of this apparatus, 1) a free stir time can be set by changing the rotational speed and inclination angle of the horizontal cylinder, and 2) the wall surface temperature of the cylinder can be changed by the amount of gas combustion. 3) If necessary, the temperature zone of the inner wall surface can be changed for each region in the lateral direction. 4) The temperature and the amount of hot air introduced into the cylinder are the amount of hot air released into the bypass of the adjusting means and the amount of fresh air introduced. Can be changed widely. By selecting a wide range of operating conditions according to these 1) to 4), it is a device capable of so-called versatile operation that matches the processing flow rate or suits the degree of burning.
[0010]
That is, in the invention according to claim 1, in the horizontal rotary cylindrical continuous stirrer, the exhaust hot air supply line for introducing the exhaust hot air of the combustion gas used for heating the outer peripheral surface of the cylinder into the cylinder is disposed . The exhaust hot air leading to the inside of the rotating cylinder is opposite to the transfer direction of the stir-fried material, and the exhaust hot air supply line is connected to the stir-processed food discharge end side so that the stir-fried material and the exhaust hot air are in countercurrent contact with each other. Is a horizontal rotary cylindrical continuous stirrer with a hot air introduction type, which is equipped with a lifting blade and a lattice for loosening according to the position where the scraped material falls. the exhaust hot air had combustion gases is processed material and direct flow contact, by exerting a forced convection effect, greatly accelerates the heating and evaporation of the comparison fried material to a so-called parallel flow contact, improving the processing capability, drip ( In addition to being able to improve the quality by stir-fry that does not cause moisture exudation from the cooking material, and to reduce the burning on the inner wall of the cylinder, it can be operated continuously for a long time. In addition, fried materials such as rice are fried Even in this case, it is possible to fry without rotating into a dumpling during rotation, mixing, and transfer, and at the same time, it is intended to improve thermal efficiency and save labor and space.
[0012]
In the invention according to claim 2 , the exhaust hot air supply line is connected to a damper for adjusting the escape amount to the exhaust hot air bypass line and the fresh air introduction amount, respectively, and is introduced into the cylinder according to the respective opening degrees. 2. The exhaust hot air introduction type horizontal cylindrical rotary continuous frying device according to claim 1, wherein the temperature and the air flow of the hot air are set, and the exhaust hot air to be introduced is discharged to the bypass line of the exhaust hot air and fresh air The temperature of the hot air passing through the inside of the cylinder and the air volume can be varied over a wide range by adjusting the so-called damper opening.
[0013]
In the invention according to claim 3 , the ratio of the horizontal effective length of the horizontal rotating cylinder to the inner diameter of the cylinder is 3 or more, and the heating means to which the combustion adjusting means for heating the outer peripheral surface directly under the horizontal rotating cylinder is added. 2. The exhaust gas according to claim 1, wherein each region is divided into three or more regions in the lateral direction, and the temperature of the cylindrical inner wall surface is individually set by adjusting the combustion load for each region. It is a hot air introduction type horizontal rotating cylindrical continuous stirrer, and in the so-called sufficiently long rotating cylinder, due to the nature of heat conduction, the inner wall temperature is in a temperature zone that matches the gas combustion amount of the nearest outer wall to some extent, If the combustion amount is changed for each region, different temperature zones can be set. For example, in the region I shown in FIG. 1 of the examples described later, the average temperature of the inner wall is 230 ° C. with a high fire, 190 ° C. with a low fire in region II, 210 ° C. with a medium fire in region III, or the like. A wide temperature range can be selected in accordance with the temperature range that can reduce scorching.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to FIG. 1 and FIG. 2, apparatus-related equipment conditions related to the exhaust hot air introduction type horizontal rotary cylindrical continuous stirrer of the present invention will be described. FIG. 1 shows a configuration diagram of a horizontal hot-cylindrical continuous stirrer with exhaust hot air introduction according to an embodiment of the present invention, and FIG. 2 shows a side view of a part of the continuous stirrer.
[0015]
As the horizontal cylinder 5, a metal material (for example, steel material, copper-based material, stainless steel, etc.) having a sufficient thickness and sufficient heat conductivity to prevent local burning and average heating without unevenness ), And the inner surface of the cylinder is preferably mirror-finished as much as possible in consideration of cleanability and prevention of scorching, or a Teflon coating or a Teflon impregnation treatment to enable continuous operation for a longer time. Surface treatment such as thermal spraying of metal powder is an effective method.
[0016]
On the inner wall of the cylinder, two or more scraping blades 6 having a height of about 3 to 15 cm for scraping the processing material are attached in the lateral direction and at least one in the circumferential direction. If necessary, the scraping blade 6 may be provided with an angle for sending the material to the discharge side, and there is also a fixing method capable of changing the blade angle. In the case of fry tends material becomes bunching during rotation, mixing, transfer, such as rice products, according to the position to fall as shown in FIG. 2 embodiment, Ru attached detangling grille 7.
[0017]
The cylinder is installed so as to have a slightly downward slope (1/20 to 50) toward the discharge side (however, this is not the case when the material feed angle is provided on the scraping blade 6), and a variable speed drive device 9 is rotated. The residence time of the processing material in the cylinder, the so-called frying time, can be changed by the inclination angle and the rotational speed of the cylinder.
[0018]
In consideration of the efficiency of continuous operation, the ratio of the lateral length of the cylinder to the inner diameter is preferably 3 or more.
[0019]
Three or more gas burners that can adjust combustion in the lateral direction and 1 to 3 in the circumferential direction are arranged on the outer periphery of the rotating cylinder, mainly around the bottom, and the so-called plural burners are used to make small increments. Allows heat load adjustment.
[0020]
Further, it is preferable that the gas supply pipe is divided into regions in the horizontal direction of the cylinder as shown in FIG. 1 of the embodiment, and a gas combustion adjusting valve or an alternative means is provided for each division.
[0021]
A plurality of radiation thermometers 11 or temperature measuring means instead thereof are arranged on the outer wall of the rotating cylinder to perform temperature management and monitoring of the outer wall temperature.
[0022]
As shown in FIG. 2 of the embodiment, a hot air cover 16 that also serves as a heat insulating material is disposed around the rotating cylinder, and the combustion gas rises in the flow path between the outer wall of the cylinder and the cover, and is connected to the duct 17 near the top. Is done. The duct 17 is then branched off from the hot air bypass line 19, and then enters the dust removal filter 21. Next, the duct 17 is combined with fresh air and supplied to the cylinder from the processed product discharge end side of the cylinder. Line A is provided. In addition, the position of a branch, the position of a filter, and the position of fresh air introduction do not stick so much to the order.
[0023]
The hot air bypass line 19 and the fresh air introduction port are respectively provided with dampers 20 and 22 for adjusting the flow rate, or alternative means, and the temperature and air volume of the hot air introduced into the cylinder are set by adjusting the dampers.
[0024]
Unlike the system where the amount of water evaporation is different due to the increase in the material temperature of the material like the batch type, it has never been possible to introduce hot air in the continuous type, so the moisture can be controlled stably. Unevenness can be reduced.
[0025]
The exhaust air coming out from the material input end side is combined with the hot air bypass line 19, then enters the exhaust gas purifier 25, and is released to the atmosphere through the exhaust air fan 26.
[0026]
Three to five thermometers 18 are arranged in a series of hot air lines to manage and monitor the temperature of the hot air.
[0027]
The material to be processed is supplied into the rotating cylinder through the input means such as the raw material input chute 4 or a screw feeder instead thereof.
[0028]
The material is picked up by the scraping blades 6 and falls, disperses, contacts the inner wall, mixes, repeats this, and advances to the discharge side while contacting with hot air and forced convection.
[0029]
The processed product is discharged through the processed product discharge chute 8 or an alternative means.
[0030]
When edible oil is used for stir-cooking, it is supplied into the cylinder by the oil injection pump 3 or a means in place thereof.
[0031]
A front door 23 is provided on the cylinder discharge end side of the cylinder, and is opened during cleaning and inspection in the cylinder.
[0032]
Horizontal rotary cylinder 5, drive unit 9, combustion gas burner 12, heat insulating cover 16, hot air bypass damper 20, fresh air damper 22, hot air bypass line 19, raw material input chute 4, processed product discharge chute 8, front door 23, the exhaust hood 24, the thermometers 11, 18 and the like are preferably installed on the same base as much as possible, and when changing the inclination angle of the rotating cylinder, it is only necessary to change the inclination angle of the base, The above-mentioned auxiliary equipment mounted on the gantry can be left as it is.
[0033]
It is more preferable to provide means that can easily change the inclination angle of the gantry, for example, a jack 28 or a screw with a handle.
[0034]
In addition, for burning off the inner wall of the cylinder after continuous operation for a long time, high-pressure water using a plunger pump with a pressure of about 10 to 20 megapascals as a source is connected to a jet gun, and the jet is rotated while the cylinder is rotated. If the gun is attached to the continuous feeding device and sprayed onto the wall surface, it can be cleaned cleanly with almost no human intervention.
[0035]
【Example】
The present invention will be specifically described with reference to the drawings shown in the embodiments, but some of the equipment conditions and the like described in the previous section are omitted. Note that the present invention is not limited to this.
[0036]
The various materials to be processed are mixed with the edible oil to be used in the raw material fixed supply machine 1 and quantitatively charged into the raw material charging chute 4. On the other hand, edible oil is supplied directly from the oil supply tank 2 to the input chute 4 by the oil supply pump 3 from the metering feeder 1 or the edible oil supply line. The material and cooking oil then enter the raw material input end side of the horizontal rotary cylinder 5.
[0037]
The material that has entered the rotating cylinder 5 that has been heated to a predetermined temperature in advance is scraped up by the scraping blade 6, and proceeds to the processed product discharge end side while repeating dropping, dispersion, contact with the inner wall of the can and mixing uniformly. The residence time of the material is determined by the inclination angle of the cylinder and the rotation speed of the cylinder.
[0038]
When processing an object that tends to be dumpling during the process, such as rice, the loosening grid 7 is attached to the position where the material falls.
[0039]
The material in progress in the rotating cylinder is always in direct contact with hot air introduced from the processed product discharge end side, and so-called counter-current forced convection heat transfer is performed. This forced convection heat transfer efficiently promotes the temperature rise of the material and the evaporation of moisture.
[0040]
The material in progress in the cylinder is fried almost without being dipped in the drip due to the hot air effect, so that a so-called high-quality fried product can be made.
[0041]
The processed product discharged from the discharge end side passes through the processed product discharge chute 8 and is conveyed to a predetermined place by a processed product transfer conveyor or the like.
[0042]
The rotating cylinder 5 uses a variable speed driving device, and conduction to the cylinder is performed by a driving gear 9, and a receiving rotating roller 10 is installed on one side.
The rotating cylinder 5 has a slight downward gradient toward the discharge side of the processed product.
[0043]
Three or more gas burners 12 are arranged in the lateral direction around the outer periphery of the rotating cylinder, mainly around the bottom, and the rotating cylinder 5 is heated by the gas burner.
[0044]
The fuel supply pipes of the gas burners 12 arranged in a plurality in the horizontal direction are divided into three regions in the horizontal direction, and a combustion adjustment valve 13 is provided for each of the zones. This adjusting valve 13 can change the temperature zone of the cylindrical inner wall for each region. This allows operation in the lateral temperature range most suitable for the material.
[0045]
A combustion air supply port 14 and a combustion state inspection port 15 are disposed around the gas burner 12.
[0046]
The combustion gas of the gas burner 12 passes through a flow path between the heat insulating cover 16 and the outer wall of the cylinder 5 and rises to the top while applying heat to the cylinder, and is connected to the duct 17.
[0047]
Next, the hot air branches off from the hot air bypass line 19 and enters the dust removal filter, soot is removed.
The hot air bypass line 19 is provided with a damper 20 for adjusting the flow rate.
[0048]
The hot air coming out of the dust removal filter 21 is then mixed with fresh air and introduced into the processed product discharge end side of the rotating cylinder. The air volume of fresh air is adjusted by the damper 22.
[0049]
The temperature and air volume of the hot air introduced into the rotating cylinder can be set in a wide range by the escape amount to the hot air bypass line (depending on the opening degree of the damper 20) and the fresh air introduction amount (depending on the opening degree of the damper 22).
[0050]
The hot air introduced into the cylinder proceeds to the material input end side while performing forced convection heat transfer with the material, gathers in the exhaust air hood 24, and then joins the hot air bypass line 19, and then cleans the exhaust gas. Proceed to 噐 25.
[0051]
In the wet exhaust gas cleaning tank 25, oily smoke is removed, moisture is added, sucked into the exhaust fan 26, and released into the atmosphere.
[0052]
For measuring the temperature of the outer wall of the cylinder, several radiation thermometers 11 and several hot air thermometers 18 are attached for temperature management and monitoring.
[0053]
This equipment matches the properties of the material such as the degree of thermal denaturation, moisture content, and ease of scorching, and the rotational speed, convection time, combustion load, temperature of the cylinder inner wall, and the temperature range in the horizontal direction of the cylinder inner wall according to the treatment flow rate. The temperature and volume of hot air can be freely changed, and a wide range of operation is possible.
[0054]
A front door 23 is provided on the processed product discharge side for use in cleaning the cylinder or for inspection.
[0055]
On the other hand, the main gantry 27 is equipped with a horizontal rotating cylinder 5 and a driving device for the related device, a gas combustion device, a hot air device, and the like, and the inclination angle of the cylinder is adjusted by an angle adjusting jack 28.
[0056]
【The invention's effect】
The present invention, using a horizontal rotating cylinder type continuous fry machine, introduced into the cylinder to exhaust hot air in the gas combustion by forced convection contact treated product countercurrent, heating and evaporation greatly promoted material As a result, the processing capacity has been greatly improved, high-quality stir-fry that is hardly submerged in the drip, long-time continuous operation by reducing the burning, energy saving, and space saving. Even if a material that tends to be dumpling like rice is fried by attaching a scraping blade to the inner wall of the cylinder and attaching a grid for loosening according to the position where the scraped material falls・ It became possible to fry without mixing into dumplings during mixing and transfer. In addition, this apparatus has a mechanism that can change the temperature of the hot air, the air volume, the temperature of the inner wall of the cylinder, etc. to a high range, and can be operated in a wide range according to the properties of the processing material and the processing flow rate.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a continuous fried device according to an embodiment of the present invention.
FIG. 2 is a side view of a part of the continuous stirrer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Raw material fixed supply machine 2 ... Oil supply tank 3 ... Oil supply pump 4 ... Raw material injection chute 5 ... Horizontal rotary cylinder 6 ... Scooping blade 7 ... Unraveling lattice 8 ... Processed product discharge chute 9 ... Cylindrical drive gear 10 ... Rotating roller DESCRIPTION OF SYMBOLS 11 ... Radiation thermometer 12 for outer walls ... Gas burner 13 ... Combustion control valve 14 ... Combustion supply port 15 ... Combustion state inspection port 16 ... Heat insulation cover 17 ... Duct 18 ... Thermometer 19 for hot air ... Hot air bypass line 20 ... Bypass Damper 21 ... Smoke removal filter 22 ... Fresh air damper 23 ... Front door 24 ... Exhaust hood 25 ... Exhaust gas purifier 26 ... Exhaust fan 27 ... Main mount 28 ... Inclination angle adjusting jack 29 ... Processed product conveyor

Claims (3)

In the horizontal rotary cylindrical continuous stirrer, a waste hot air supply line that guides the exhaust heat of the combustion gas used to heat the outer peripheral surface of the cylinder to the inside of the rotary cylinder is provided , and the waste hot air that leads to the inside of the rotary cylinder is stir-fried The waste hot air supply line is connected to the fried food discharge end side so that the stir-fried material and the waste hot air are in countercurrent contact with the transfer direction of the fried food. A horizontal rotating cylindrical continuous stirrer with a hot air introduction type, wherein a lattice for loosening is attached to the position where the material falls.   The exhaust hot air supply line is connected to a damper that adjusts the amount of escape to the exhaust hot air bypass line and the amount of fresh air introduced, and the temperature and air volume of the hot air introduced into the cylinder are set according to the degree of opening. A horizontal cylindrical rotary continuous frying device of the exhaust hot air introduction type according to claim 1.   The ratio of the horizontal effective length of the horizontal rotating cylinder to the inner diameter of the cylinder is 3 or more, and the heating means to which the combustion adjusting means for heating the outer peripheral surface directly under the horizontal rotating cylinder is divided into three or more sections in the horizontal direction of the cylinder. The exhaust-air-introduced horizontal rotary cylindrical type according to claim 1, wherein each region is provided individually, and the temperature load of the inner wall surface of the cylinder is individually set by adjusting the combustion load for each region. Continuous stirrer.

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