JP2015231346A - Food baking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a food baking apparatus which can create good-looking burn on the surface of a food conveyed on a conveyance passage.SOLUTION: A food baking apparatus can provide a food 3 conveyed on a conveyance passage 2 with flare F1 in a complete combustion state and flare F2 in an incomplete combustion state. At least the fire power of the flare F1 in the complete combustion state is changed.

Description

  The present invention relates to a food baking apparatus that forms burns on the surface of food conveyed on a conveyance path.

  In food factories, restaurants, and the like, a food baking apparatus that forms a large amount of burns in a short time on the surface of food by heating food conveyed by a conveyance path such as a conveyor is widely used (for example, Patent Document 1). ).

  Such a food baking apparatus is provided with a heating device provided with a heater for heating the food, and the surface of the food is heated by the heater while the food conveyed by the conveyance path passes through the heating device. Yes.

JP 2004-283122 A (page 4, FIG. 1)

  However, in Patent Document 1, in order to efficiently scorch the food surface within a predetermined time, the heating power of the heater is kept high, and the scorch on the entire food surface is monotonous and looks good. Was bad.

  The present invention has been made paying attention to such a problem, and an object of the present invention is to provide a food baking apparatus capable of forming a good-looking burnt surface on the surface of food conveyed on the conveyance path.

In order to solve the above problems, the food baking apparatus of the present invention is:
It is characterized by being able to give a completely burned flame and an incompletely burned flame to the food conveyed on the carrying path, and changing at least the heating power of the completely burned flame.
According to this feature, while the food is being transported on the transport path, the surface of the food is partially darkened by the flame in a completely burned state that changes between a strong fire that burns and a weak fire that does not easily burn. Since the surface of the food can be lightly burnt by the flame in an incompletely burned state, it is possible to form a good-looking burnt color in which a dark burnt color and a light burnt color are mixed on the surface of the food.

The food baking apparatus includes a heating unit that generates a flame by burning a mixed gas of air from the air supply unit and gas from the gas supply unit, and includes an amount of air from the air supply unit and the gas supply unit. By changing the ratio of the gas amount, the flame in the complete combustion state and the flame in the incomplete combustion state are generated.
According to this feature, it is possible to generate at least two different flames from the heating unit without using a special device by changing the ratio of the amount of air from the air supply unit and the amount of gas from the gas supply unit. it can.

The air supply means is characterized in that the amount of air to be supplied is changed in a state where the flame in the complete combustion state is generated or in a state where the flame in the incomplete combustion state is generated.
According to this feature, in the state where the flame of the complete combustion state is generated and the state where the flame of the incomplete combustion state is generated, the flame of the complete combustion state and the incomplete combustion are changed by changing the amount of air from the air supply means. Since the strength of the fire of the state can be increased or decreased, it can be finely adjusted according to the type of food.

The air supply means is characterized by changing the amount of air supplied by inverter control in a state where the flame in the complete combustion state is generated or in a state where the flame in the incomplete combustion state is generated.
According to this feature, since the air supply means can adjust the amount of air supplied by inverter control, it is easy to adjust the heating power of each of the flame in the complete combustion state and the flame in the incomplete combustion state. be able to.

A plurality of the heating units are provided on the conveyance path, and each heating unit separately generates the flame in the complete combustion state and the flame in the incomplete combustion state.
According to this feature, each of the plurality of heating units can separately control the heating power of the flame in the complete combustion state and the flame in the incomplete combustion state. Can be adjusted.

A region that gives the completely burned flame and the incompletely burned flame to the food on the transport path is surrounded by a housing that can be visually recognized from the outside.
According to this feature, the two different flames can be given to the food in the region surrounded by the housing on the conveyance path, so that the work can be performed safely with high thermal efficiency. Further, by visually observing the inside from the outside of the housing, it can be confirmed whether the flame in the complete combustion state and the flame in the incomplete combustion state are normally generated.

It is a front view which shows a foodstuff baking apparatus. It is a side view which shows a foodstuff baking apparatus. It is upper surface sectional drawing which shows a foodstuff baking apparatus. It is the schematic which shows a heating apparatus. It is a graph which shows the aspect which attached the strength to the fire power of the flame of a perfect combustion state.

  The form for implementing the food baking apparatus which concerns on this invention is demonstrated below based on an Example.

  The food baking apparatus according to the embodiment will be described with reference to FIGS. Hereinafter, the front side of the screen in FIG. 1 will be described as the front side (front side) of the food baking apparatus, and the left and right sides viewed from the front side of the food baking apparatus will be described as the left and right sides of the food baking apparatus. Reference numeral 1 in FIG. 1 is a food baking apparatus that forms a burnt mark on the surface of the food 3, and includes an article conveyance device 2 as a conveyance path arranged extending in the front-rear direction.

  As shown in FIGS. 1 to 3, the article conveying device 2 includes a driving roller 2a disposed at the front end, a driven roller 2b disposed at the rear end, the driving roller 2a, and the driven roller 2b. It is mainly composed of endless chains 2c and 2c that are stretched. The endless chains 2c, 2c are arranged on the left and right ends of the driving roller 2a and the driven roller 2b, and a plurality of rod-like members 2d, 2d,... Is built. The drive roller 2a is driven by a drive motor 2e, and the drive roller 2a drives the endless chains 2c, 2c and rod-like members 2d, 2d,... Around the drive roller 2a and the driven roller 2b. Is driven to rotate. The drive motor 2e is cable-connected to a control unit 23, which will be described later, and is rotationally driven and stopped by the control unit 23 (not shown).

  As shown in FIG. 1 or FIG. 3, a tray 4 on which food 3 is placed can be placed on the bar-like members 2d, 2d,. By rotating, the food 3 can be transported together with the tray 4 from the front to the rear. In the present embodiment, the food 3 placed on the article transport device 2 is, for example, fish or hamburger seed. Furthermore, the conveyance path may be a wire mesh belt conveyor or the like.

  As shown in FIG. 1 and FIG. 2, a housing 5 that constitutes an outer casing of the food baking apparatus 1 is provided at a substantially central portion in the front and rear direction of the article conveying device 2, and side surfaces 5 a and 5 a of the housing 5 are provided. ,... Are provided with a plurality of through holes so that the inside can be visually recognized through the plurality of through holes. The housing 5 is supported by legs 5e, 5e,..., The lower front side of the housing 5 functions as an inlet opening 5b into the housing 5, and the lower rear side of the housing 5 is an outlet opening 5c from the inside of the housing 5. Is functioning as

  Further, as shown in FIGS. 1 and 3, the left and right sides of the housing 5 are covered with covers 5d and 5d formed of a heat insulating material. Note that the cover 5d in the present embodiment can visually recognize the housing 5 side from an opening / closing section (not shown), but is not limited to this, for example, by using a cover made of a transparent material having heat insulation properties. You may make it visible the housing 5 side.

  Inside the housing 5, a heating unit 6 that generates a flame for heating the food 3 is provided. The heating unit 6 includes two blowing nozzles 7a and 7b that are spaced apart in the front-rear direction and ignition means 8 and 8 that are provided below the blowing nozzles 7a and 7b. Each of the blowout nozzles 7a and 7b includes a plurality of blowout ports (not shown) for discharging a mixed gas of air and gas, which will be described later, so that the mixed gas discharged from the blowout ports by the ignition means 8 and 8 is ignited. It has become. The heating unit 6 constitutes a part of a heating device 9 described later.

  As shown in FIG. 4, the heating device 9 has a mixed gas of air supply means 10, 10 ′, gas supply means 11, air from the air supply means 10, 10 ′ and gas from the gas supply means 11. The mixing chambers 12 and 12 ′ to be formed and the heating unit 6 are mainly configured.

  The air supply means 10 and 10 'indicate a blower or the like in which the amount of air supply is changed by changing the motor frequency by the inverters 15 and 15', and the gas supply means 11 is a tank containing LP gas. Point to. The gas supply means may be a gas pipe that supplies liquefied natural gas.

  Air pipes 13 and 13 'connecting the air supply means 10 and 10' to the mixing chambers 12 and 12 'are respectively provided with motor valves 14 and 14' for air volume adjustment. A pressure regulator 17 is provided on the gas pipe 16 extending from the gas supply means 11. In addition, motor valves 19 and 19 'and gas flow meters 20 and 20' are provided in branch pipes 18 and 18 'branched from the gas pipe 16 to the mixing chambers 12 and 12', respectively. The mixing chamber 12 and the blowing nozzle 7 a are connected by a fluid pipe 21, and the mixing chamber 12 ′ and the blowing nozzle 7 b are connected by a fluid pipe 22. Two gas supply means may be prepared and each gas supply means may be connected to the mixing chambers 12 and 12 '.

  Further, the air supply means 10 and 10 ', the motor valves 14 and 14', the pressure regulator 17, the motor valves 19 and 19 ', and the gas flow meters 20 and 20' are connected to the control unit 23, respectively. Has been. The air supply means 10, 10 ′ changes the frequency of the motor in which the inverters 15, 15 ′ are built based on the instruction information from the control unit 23, and the amount of air to be supplied is determined by the frequency. The Further, the gas flow meters 20 and 20 ′ are configured to give information on the gas flow rate to the control unit 23, and the control unit 23 determines the motor valves 14 and 14 ′ and the pressure regulator based on the information. 17, the motor valves 19 and 19 'are respectively adjusted in opening so that the ratio of the air and gas mixture can be automatically adjusted in accordance with a preprogrammed value.

  As shown in FIG. 4, the blowing nozzle 7a and the blowing nozzle 7b generate different flames. Specifically, the flame generated from the blow-out nozzle 7b is a flame F1 in a complete combustion state with good combustion efficiency generated by burning a gas mixture in which air is mixed at a ratio of a predetermined amount or more with respect to the gas. is there. In other words, the flame F1 in the complete combustion state is a state in which there is no unburned gas from the gas supply means 11 due to a sufficient amount of oxygen necessary for the supplied gas to burn, or a very small state. It is a blue flame that strongly burns a small range compared to the incompletely combusted flame F2, which will be described later, and is darker than the incompletely combusted flame F2 on the surface of the food 3 Can be attached.

  On the other hand, the flame generated from the blowing nozzle 7a is a flame F2 in an incomplete combustion state with poor combustion efficiency, and the ratio of the gas supplied from the gas supply means 11 to the air supplied from the air supply means 10 is A mixed gas that is mixed in excess of the rate at which the flame F1 in the complete combustion state is generated, in other words, a mixed gas that does not contain a sufficient amount of oxygen necessary for the supplied gas to be completely burned. It is a flame generated by burning. The flame F2 in the incomplete combustion state indicates a state in which there is a large amount of unburned gas supplied from the gas supply means 11, and is a red flame that burns a larger range more slowly than the flame F1 in the complete combustion state. The surface of the food 3 can be lightly burnt compared to the flame F1 in the complete combustion state.

  Thus, the air supply means 10, the mixing chamber 12, the air pipe 13, the motor valve 14, the inverter 15, the gas pipe 18, the motor valve 19, and the gas flow meter 20 connected to the blowing nozzle 7 a are in an incomplete combustion state. Are unitized as a first unit 24 that forms a mixed gas for generating the flame F2. Further, the air supply means 10 ′, the mixing chamber 12 ′, the air pipe 13 ′, the motor valve 14 ′, the inverter 15 ′, the gas pipe 18 ′, the motor valve 19 ′, and the gas flow meter 20 ′ connected to the blowing nozzle 7b. Is unitized as a second unit 25 that forms a mixed gas for generating the flame F1 in a completely burned state.

  Next, a description will be given of an aspect in which the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state are strengthened.

  FIG. 5 shows a supply amount of air supplied from the air supply means 10 ′ by the inverter 15 ′ while keeping the flame F1 in the complete combustion state when the flame F1 in the complete combustion state is generated from the blowing nozzle 7b. The aspect which changed this is shown. Here, the air supply amount is changed by changing the frequency of the motor of the air supply means 10 ′ from 50 Hz to 40 Hz to 50 Hz... Every 3 seconds by the inverter 15 ′ in a certain predetermined time zone.

  As shown in FIG. 5, the temperature of the flame F <b> 1 in the complete combustion state is when the supply amount of air is small (when the motor frequency is 50 Hz) and when the supply amount of air is small (the motor frequency is 40 Hz). When) is higher. This is because the gas is supplied by being pulled by the wind pressure of the air, so that the larger the amount of air that is supplied, the larger the amount of gas supplied within a certain period of time, resulting in an increase in the amount of mixed gas supplied. Because. Therefore, by only changing the amount of air, it is possible to increase or decrease the heating power while maintaining the state of the flame F1 in the complete combustion state in a certain predetermined time zone, and this aspect is the heating power in this embodiment. It is an adjustment means. In addition, the temperature here is the temperature of the flame F1 itself in a complete combustion state. Further, since the incompletely combusted flame F2 generated from the blowout nozzle 7a can be similarly increased or decreased by the above-described process, the description of the adjustment of the heating power of the incompletely combusted flame F2 is omitted.

  In addition, when the fire power is weak, the flame F1 in a completely burned state is less likely to form a burnt on the surface of the food 3 than when the fire power is strong.

  In this embodiment, the air supply amount is changed every 3 seconds by the inverters 15 and 15 '. However, for example, the air supply amount may be changed every 1 second or every 5 seconds. However, the air supply amount may be changed irregularly without being limited to the predetermined time. Further, by operating and stopping the air supply means 10 and 10 ', the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state may be strengthened. Furthermore, the frequency of the motor is an example in the aspect of the present embodiment, and is not limited.

  Next, description will be made on a mode in which a burn is formed on the food 3 using the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state.

  First, the controller 23 shown in FIG. 4 adjusts the motor frequency of the air supply means 10 and 10 ′ and the opening of the motor valves 14 and 14 ′, thereby determining the mixing chambers 12 and 12 ′. Each predetermined amount of air is supplied.

  At approximately the same time as the supply of air, the controller 23 adjusts the opening of the pressure regulator 17 and the motor valves 19 and 19 ′, thereby determining each predetermined gas determined for the mixing chambers 12 and 12 ′. Quantity is supplied. At this time, the amount of gas supplied to the mixing chamber 12 in the first unit 24 is an excessive ratio with respect to the amount of air supplied to the mixing chamber 12, and is supplied to the mixing chamber 12 ′ in the second unit 25. The amount of gas thus obtained is an appropriate ratio with good combustion efficiency with respect to the amount of air supplied to the mixing chamber 12 '. Note that the supply of air and the supply of gas are not limited to being performed at the same time, and may be performed at different timings.

  Then, each of the mixed gases mixed in the mixing chambers 12 and 12 ′ is ignited by the respective ignition means 8 below the blowing nozzle 7a and the blowing nozzle 7b, so that the flame F2 in the incomplete combustion state is emitted from the blowing nozzle 7a. The flame F1 in a completely burned state is generated from the blowing nozzle 7b. Further, the above-described heating power adjusting means is used to increase or decrease the heating power of the flame F1 in the complete combustion state and the heating power of the flame F2 in the incomplete combustion state.

  Next, as illustrated in FIG. 3, the tray 4 on which the food 3 is placed is placed on the upper surface of the article conveyance device 2 in the operating state, and the food 3 is conveyed from the front toward the rear. The food 3 enters the housing 5 through the inlet opening 5b and is heated by the incompletely combusted flame F2 of the blowing nozzle 7a. According to this, since the burnt eyes are formed when the fire power of the flame F2 in the incomplete combustion state is strong, and it is difficult to form the burn eyes when the fire power of the flame F2 in the incomplete combustion state is weak, the surface of the food 3 On the other hand, a light burnt burnt portion is partially formed.

  Subsequently, the food 3 is heated by the flame F1 in the complete combustion state of the blowing nozzle 7b. According to this, charred is formed when the fire power of the flame F1 in the complete combustion state is strong, and it is difficult to form charred when the heat power of the flame F1 in the complete combustion state is weak. For this reason, the dark burnt in a range smaller than the light burnt formed by the incompletely burned flame F2 is partially formed in the portion where the dark burnt by the completely burned flame F1 is not formed. As a result, a dark burnt color and a light burnt color are mixed on the surface of the food 3, and it is possible to form a scorch that looks good and burns manually.

  As described above, the food baking apparatus 1 uses the flame F1 in a completely burned state in which the strength of the heating power is increased and the small area is strongly baked while the food 3 is conveyed on the article conveying apparatus 2. The surface of food 3 can be partly darkly colored, and the surface of food 3 is partially colored by the incompletely combusted flame F2 that is baked to a greater extent than the burnt by the completely combusted flame F1. Therefore, it is possible to efficiently form a good-looking burnt color in which a dark burnt color and a light burnt color are mixed.

  Further, in the first unit 24 and the second unit 25 having substantially the same structure, the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state are generated only by adjusting the ratio between the air amount and the gas amount. Therefore, at least two different flames described above can be generated from the heating unit 6 without preparing a special device. Furthermore, depending on the ratio of the amount of air from the air supply means 10 and 10 'and the amount of gas from the gas supply means 11, the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state had intermediate heating power. A flame can also be formed.

  Further, by changing the amount of air to be supplied with respect to the heating power of the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state, the state of the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state is maintained. Since each is given strength, a moderate burn can be formed by finely adjusting the burnt color formed corresponding to the type of food 3 to be heat-processed, the moisture content, and the like.

  Further, since the amount of air to be supplied can be automatically adjusted based on a value programmed in advance by the inverter 15 ', it is easy to adjust the heating power of the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state. And reliably.

  Further, since the heating unit 6 generates the flame F2 in the incomplete combustion state and the flame F1 in the complete combustion state separately in the first unit 24 and the second unit 25, respectively, the heating unit 6 and the flame F1 in the complete combustion state are incomplete. It becomes possible to control the heating power with the flame F2 in a combustion state by a separate unit, and it can be adjusted to the most suitable burnt according to the type of the food 3 to be baked, the amount of water contained, and the like.

  Further, since the food 3 is heated by the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state inside the housing 5, the flame F1 in the complete combustion state and the incomplete combustion state in the housing 5 The heat from the flame F2 can be retained and work can be performed safely with high thermal efficiency. Note that the housing 5 may not necessarily be provided as long as the food conveyed on the conveying path is given a flame in a completely burned state and a flame in an incompletely burned state and the heating power of the flame in a completely burned state can be adjusted. .

  Further, as described above, the flame F1 in the completely burned state is a blue flame, the flame F2 in the incompletely burned state is a red flame, and the housing 5 is interposed via the opening / closing portions of the covers 5d and 5d. Since the inside can be visually recognized from the outside, it can be confirmed from the outside whether the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state are normally generated.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, a mode has been described in which the strength of the flame F1 in the complete combustion state and the flame F2 in the incomplete combustion state are increased and decreased by changing the amount of supplied air. It is also possible to make the flame in an incompletely burned state constant and form a light burnt burnt over the entire surface of the food 3.

  In addition, the air supply amount from the air supply means 10 and 10 'is controlled by the motor valves 14 and 14' and the inverters 15 and 15 ', but is not limited thereto. For example, the constant amount of air supplied from the air supply means may be adjusted only by the motor valves 14 and 14 'without performing inverter control of the air supply means. In addition, the air supply amount may be automatically adjusted only by inverter control without providing a motor valve.

  In addition, the thermal power adjusting means in the above embodiment adjusts the amount of air by performing inverter control on the air supply means 10 and 10 '. For example, instead of inverter control, the fluid pipes 21 and 22 are connected to the fluid pipes 21 and 22, respectively. Each adjustment valve is provided, and by adjusting the opening of the adjustment valve, the mixed gas mixed with a certain amount of air supplied from the air supply means is adjusted to increase or decrease the heating power of each flame. Also good.

  Moreover, it is not restricted to automatically adjusting each apparatus based on the numerical value programmed beforehand by the control part 23, An operator may adjust each apparatus manually according to a condition.

  Moreover, in the said Example, the flame F2 of the incomplete combustion state and the flame F1 of the complete combustion state were separately generated by the 1st unit 24 and the 2nd unit 25 from the blowing nozzle 7a and the blowing nozzle 7b. It is possible to switch between a complete combustion state flame and an incomplete combustion state flame from one unit through one blowing nozzle, or two units to complete combustion state from one blowing nozzle. These flames and incompletely burned flames may be generated simultaneously or by switching.

  In the above-described embodiment, the blow nozzle 7a that generates the flame F2 in the incomplete combustion state is disposed on the front side, and the blow nozzle 7b that generates the flame F1 in the complete combustion state is disposed on the rear side. The nozzle 7b may be arrange | positioned ahead and the blowing nozzle 7a may be arrange | positioned back. Moreover, the blowing nozzle may be arrange | positioned so that it may heat from the downward direction of foodstuffs.

  Moreover, although the two blowing nozzles 7a and 7b were provided in the food baking apparatus 1, you may provide three or more blowing nozzles. Moreover, you may design freely the distribution of the unit with respect to each blowing nozzle.

1 Food baking equipment 2 Article conveying device (conveyance path)
3, 3 'Food 5 Housing 6 Heating part 7a, 7b Blowing nozzle 8 Ignition means 9 Heating device 10, 10' Air supply means 11 Gas supply means 12, 12 'Mixing chamber 15, 15' Inverter 23 Control part F1 Complete combustion state Flame F2 Flames with incomplete combustion

Claims (6)

  A food baking apparatus characterized by being able to give a flame in a completely burned state and a flame in an incompletely burned state to food transported on a transfer path, and changing at least the heating power of the flame in a completely burned state .   The food baking apparatus includes a heating unit that generates a flame by burning a mixed gas of air from the air supply unit and gas from the gas supply unit, and includes an amount of air from the air supply unit and the gas supply unit. The food baking apparatus according to claim 1, wherein the flame in the complete combustion state and the flame in the incomplete combustion state are generated by changing a ratio of the amount of gas.   The food according to claim 2, wherein the air supply means changes the amount of air to be supplied in a state where the flame in the complete combustion state is generated or in a state where the flame in the incomplete combustion state is generated. Firing equipment.   The air supply means changes the amount of air supplied by inverter control in a state where the flame in the complete combustion state is generated or in a state where the flame in the incomplete combustion state is generated. 4. The food baking apparatus according to 3.   The heating unit is provided in a plurality on the conveyance path, and each heating unit generates the flame in the complete combustion state and the flame in the incomplete combustion state separately. The food baking apparatus in any one of 4 thru | or 4.   6. A region in which the flame in the complete combustion state and the flame in the incomplete combustion state are given to the food on the conveyance path is surrounded by a housing that can be visually recognized from the outside. A food baking apparatus according to any one of the above.

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