JP5156437B2 - Liquid heating device - Google Patents

Description

  The present invention relates to a liquid heating apparatus for heating a liquid in a liquid tank.

As a liquid heating apparatus that heats the liquid in the liquid tank, for example, a fryer that includes an oil tank as the liquid tank, uses oil as the liquid, and fries the food with the heated oil is known.
In such a fryer, the oil in the oil tank is heated using a burner arranged outside the oil tank. Considering the energy efficiency as a liquid heating device, it is preferable to dispose the combustion chamber at the bottom of the liquid tank and efficiently transfer the amount of heat in the combustion chamber to the liquid, but especially in fryer, when frying food Since the generated dust is accumulated at the bottom of the liquid tank, when the burner is arranged at the lower part of the oil tank, there arises a problem that the dust burns.

For this reason, in the fryer, as shown in Patent Document 1, the burner is disposed on the side of the oil tank, and the high-temperature combustion gas generated by the combustion in the burner is separated from the bottom of the oil tank and passes through the oil tank horizontally. The structure that passes through the passage is adopted.
By adopting such a configuration, the heating passage is heated by passing the combustion gas through the heating passage, and further the oil in the oil tank is heated, but the heating passage is separated from the bottom where dust accumulates. Therefore, the burning of dust can be prevented.
JP 2006-292308 A

However, when the configuration in which the burner is arranged on the side of the oil tank is adopted, heat loss from the combustion chamber cannot be eliminated, and energy efficiency is poor.
On the other hand, even when the burner is disposed in the lower part of the liquid tank, a large amount of heat is radiated from the side and bottom of the burner, resulting in useless energy. In addition, a large combustion chamber is required for complete combustion, and the apparatus becomes large.

  The present invention has been made in view of the above-described problems, and aims to improve energy efficiency in a liquid heating apparatus that heats a liquid in a liquid tank and to reduce the size of the apparatus.

  In order to achieve the above object, the present invention provides a liquid heating apparatus for heating a liquid in a liquid tank, and includes a micro combustor disposed in the liquid tank, and the micro combustor from the outside of the liquid tank. A supply pipe for supplying a mixed gas of fuel and oxidant to the microcombustor, and exhaust gas exhausted from the microcombustor and exhausted from the microcombustor to the outside of the liquid tank. And a discharge pipe for discharging.

  According to the present invention having such a feature, a microcombustor that heats a mixed gas of the supplied fuel and oxidant with the combustion gas and burns it in the combustion chamber is disposed in the liquid tank. Then, a mixed gas of fuel and oxidant is supplied from the outside of the liquid tank to the microcombustor through the supply pipe, and exhaust gas (combustion gas) exhausted from the microcombustor is supplied to the outside of the liquid tank through the discharge pipe. Exhausted.

Further, in the present invention, when dust accumulates in the liquid tank, the micro combustor is separated from a region where the dust accumulates in the liquid tank by a distance where the dust does not burn due to heat generated by the micro combustor. A configuration in which they are arranged apart from each other is adopted.

  In the present invention, a configuration is adopted in which a plurality of the above-described microcombustors are provided and these microcombustors are arranged horizontally.

  Moreover, in this invention, the structure that a part of said discharge piping is drawn around with respect to the said micro combustor is employ | adopted.

  Moreover, in this invention, the structure provided with the support part which supports the said micro combustor, the said supply piping, and the said discharge piping so that rotation in the up-down direction is possible is employ | adopted.

  Further, in the present invention, a fixed duct for leading the exhaust gas discharged from the discharge pipe is provided, and a discharge end of the discharge pipe is a long hole formed in the fixed duct over a moving range of the discharge end. The structure of being inserted in the said fixed duct via is employ | adopted.

According to the present invention, since the microcombustor for burning the mixed gas of fuel and oxidant is disposed in the liquid tank, the liquid is immersed in the liquid when the liquid is present in the liquid tank. Is done. For this reason, most of the heat generated by the micro combustor and dissipated to the surroundings is transferred to the liquid. Therefore, compared with the case where a burner is arrange | positioned to the side or lower part of a liquid tank, a liquid can be heated efficiently.
In addition, a micro combustor that can be completely burned even in a small size and has stable combustion is used as a heating device. Therefore, it is not necessary to install a large combustion chamber, and the entire apparatus can be downsized.
Therefore, according to the present invention, the energy efficiency in the liquid heating apparatus for heating the liquid in the liquid tank can be improved, and the apparatus can be downsized.

  Hereinafter, an embodiment of a liquid heating apparatus according to the present invention will be described with reference to the drawings. In the following description, a fryer will be described as an example of the liquid heating apparatus according to the present invention. Further, in the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

(First embodiment)
1 and 2 are schematic configuration diagrams of a flyer F1 according to the present embodiment, in which FIG. 1 is a cross-sectional view and FIG. 2 is a plan view.
As shown in these drawings, the flyer F1 of this embodiment includes an oil tank 1 (liquid tank), a micro combustor 2, a supply pipe 3, a discharge pipe 4, a hinge part 5 (support part), and a fixed duct. 6 is provided.

The oil tank 1 stores oil X (liquid) inside, and has a box shape with an open top. The oil tank 1 is formed of, for example, a heat resistant metal material.
Further, an oil drain hole (not shown) that is opened when the oil X stored inside is discharged to the outside is formed near the bottom of the oil tank 1, and the oil X is discharged through the oil drain hole. It can be discharged to the outside. In addition, when supplying the oil X to the oil tank 1, the oil X is poured into the oil tank 1 from the opened upper part.

The micro combustor 2 raises the temperature of the fuel and the oxidant supplied to the combustion chamber by exchanging heat between the supplied fuel and the mixed gas of the oxidant and the combustion gas generated in the combustion chamber provided therein. It is to burn.
And in the fryer F1 of this embodiment, when the oil X is stored in the oil tank 1, the micro combustor 2 is disposed in the oil tank 1 so as to be immersed in the oil X.

  Further, the micro combustor 2 is separated from the floor portion 11 where dust is accumulated in the oil tank 1 by a distance where dust accumulated on the floor portion 11 due to its own heat generation does not burn. In order to heat the oil X in the oil tank 1 uniformly and quickly, the micro combustor 2 is preferably as close as possible to the floor 11 of the oil tank 1. For this reason, it is preferable that the micro combustor 2 is disposed at a position where dust accumulated on the floor portion 11 due to its own heat generation does not burn and is closest to the floor portion 11.

  Such a micro combustor 2 is supported by a supply pipe 3 as shown in FIG. If the supply pipe 3 does not have sufficient rigidity to support the micro combustor 2, a separate support member may be installed.

The supply pipe 3 is routed from the outside of the oil tank 1 to the micro combustor 2 and supplies a mixed gas of fuel and oxidant.
The supply pipe 3 is connected to a gas supply device (not shown) via a hinge portion 5 fixed on the side wall 12 of the oil tank 1, and a mixed gas of fuel and oxidant supplied from the gas supply device is supplied. Introduced into the micro combustor 2. The supply pipe 3 is connected to a pipe extending from the gas supply device so as to be rotatable at the hinge portion 5.

The discharge pipe 4 is routed from the microcombustor 2 to the outside of the oil tank 1 and exhausts the exhaust gas exhausted from the microcombustor 2 to the outside of the oil tank 1.
As shown in FIG. 2, a part of the discharge pipe 4 is routed horizontally with respect to the micro combustor 2, and is routed so as to fill the side of the micro combustor 2.
Such a discharge pipe 4 is supported by a micro combustor 2 as shown in FIG.

  The hinge part 5 is fixed on the side wall 12 of the oil tank 1 as described above, and the supply pipe 3 is pivotably connected up and down, so that the supply pipe 3 and the micro combustor are shown in FIG. 2 and the discharge pipe 4 are supported so as to be rotatable up and down.

In addition, the operator's work area | region which handles the flyer F1 of this embodiment is set to the area | region on the opposite side to the hinge part 5 of the oil tank 1. FIG. The supply pipe 3 and the discharge pipe 4 are drawn out from the oil tank 1 to the hinge portion 5 side as shown in FIGS. 1 and 2.
Moreover, since the hinge part 5 is installed on the opposite side to the work area, when the micro combustor 2, the supply pipe 3 and the discharge pipe 4 are rotated upward, the micro combustor 2, the supply pipe 3 and the discharge pipe 4 are It is turned toward the opposite side of the work area.

The fixed duct 6 leads the exhaust gas discharged from the discharge pipe 4 to the far side of the worker, and is erected on the side of the side wall 12 of the oil tank 1.
As shown in FIG. 1, the fixed duct 6 includes a long hole 61 formed over the range of movement of the discharge end 41 that accompanies the rotation of the discharge pipe 4 around the hinge portion 5. The discharge pipe 4 is connected to the fixed duct 6 by inserting the discharge end 41 of the discharge pipe 4 into the long hole 61.

In the flyer F1 of this embodiment having such a configuration, the mixed gas of fuel and oxidant supplied from a gas supply device (not shown) flows into the supply pipe 3 via the hinge portion 5 and is supplied by the supply pipe 3. It is introduced into the micro combustor 2.
The mixed gas of fuel and oxidant supplied to the micro combustor 2 is heat-exchanged with the high-temperature combustion gas generated in the combustion chamber in the micro combustor 2 and heated to near the ignition temperature and supplied to the combustion chamber. The The mixed gas of fuel and oxidant supplied to the combustion chamber is ignited and burned by the flame in the combustion chamber.
Here, in the flyer F1 of the present embodiment, the micro combustor 2 is disposed in the oil tank 1 and immersed in the oil X. For this reason, most of the heat generated by the micro combustor and dissipated to the surroundings is transferred to the oil X. Therefore, compared with the case where a burner is arrange | positioned to the side or lower part of a liquid tank, the oil X can be heated efficiently. Therefore, according to the flyer F1 of this embodiment, energy efficiency can be improved.
Further, in the flyer F1 of the present embodiment, the micro combustor 2 is installed away from the floor portion 11 of the oil tank 1 where dust accumulates by a distance where the dust does not burn. For this reason, the burning of the dust deposited on the floor portion 11 can be prevented.

The combustion gas generated by the combustion of the mixed gas of fuel and oxidant is discharged as exhaust gas to the outside of the microcombustor 2 after heating the mixed gas of fuel and oxidant newly supplied to the microcombustor 2. The The exhaust gas exhausted from the micro combustor 2 is discharged to the outside of the oil tank 1 through the discharge pipe 4.
In addition, since exhaust gas is high temperature, the amount of heat of exhaust gas is transmitted to the oil X, whereby the oil X can be heated more efficiently. In the flyer F1 of the present embodiment, a part of the discharge pipe 4 is routed horizontally with respect to the micro combustor 2, and the discharge pipe 4 is routed so as to fill the side of the micro combustor 2. Even part of the oil X is heated. For this reason, compared with the case where the oil X is heated only by the micro combustor 2 alone, the oil X can be heated quickly and uniformly in a plan view.

Then, the exhaust gas discharged to the outside of the oil tank 1 through the discharge pipe 4 flows into the fixed duct 6 from the discharge end 41 of the discharge pipe 4 and is led out of the work area by the fixed duct 6.
As shown in FIGS. 1 and 2, the supply pipe 3 and the discharge pipe 4 are drawn from the oil tank 1 to the hinge portion 5 side opposite to the work area. For this reason, the supply piping 3 and the discharge piping 4 do not interfere with the operator's work.

On the other hand, when the inside of the oil tank 1 is cleaned in the flyer F1 of this embodiment, the micro combustor 2, the supply pipe 3, and the discharge as shown in FIG. The pipe 4 is turned upward and lifted.
As a result, nothing is present in the oil tank 1, so that the oil tank 1 can be easily cleaned.
Further, when the maintenance of the micro combustor 2, the supply pipe and the discharge pipe 4 is performed, the micro combustor 2, the supply pipe and the discharge pipe 4 can be moved from a narrow space in the oil tank 1 to a wide space above the oil tank 1. Therefore, maintenance can be easily performed.

  Further, in the flyer F1 of the present embodiment, the discharge pipe 41 and the fixed duct 6 are inserted by inserting the discharge end 41 of the discharge pipe 4 into the long hole 61 formed over the movement range of the discharge end 41. And are connected. For this reason, when the discharge pipe 4 is rotated around the hinge part 5, the discharge end 41 can always be kept inserted in the fixed duct 6. Accordingly, it is possible to rotate the discharge pipe 4 while maintaining the connection between the discharge pipe 4 and the fixed duct 6.

Moreover, in the flyer F1 of this embodiment, the hinge part 5 is installed on the opposite side to the work area, and when the micro combustor 2, the supply pipe 3 and the discharge pipe 4 are rotated upward, the micro combustor 2, The supply pipe 3 and the discharge pipe 4 are rotated toward the side opposite to the work area.
For this reason, when the micro combustor 2, the supply pipe 3 and the discharge pipe 4 are rotated upward, the micro combustor 2, the supply pipe 3 and the discharge pipe 4 do not interfere with the work of the operator.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the description of the second embodiment, the description of the same parts as in the first embodiment will be omitted or simplified.

FIG. 4 is a plan view of the flyer F2 of the present embodiment.
As shown in this figure, the flyer F2 of the present embodiment includes two micro combustors 10 and 20 arranged horizontally.
The supply pipe 3 is connected to each of the micro combustors 10 and 20. Further, the discharge pipe 4 is connected to each of the micro combustors 10 and 20, and is integrated in the middle.

  According to the flyer F2 of the present embodiment having such a configuration, the oil X can be heated quickly and uniformly in a plan view as compared with the case where the oil X is heated only by a single micro combustor.

  As mentioned above, although preferred embodiment of the liquid heating apparatus which concerns on this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

For example, in the above-described embodiment, a fryer is described as an example of the liquid heating apparatus of the present invention.
However, the present invention is not limited to this, and can be applied to all apparatuses for heating a liquid. For example, the present invention can be applied to a heating device that heats a flowing liquid instead of a stored liquid.

Moreover, in the said embodiment, the micro combustor 2 demonstrated the structure of single or two.
However, the present invention is not limited to this, and may further include a plurality of micro combustors. When a plurality of micro combustors are installed, the micro combustors may be arranged horizontally, the micro combustors may be installed vertically, or a plurality of micro combustors may be arranged randomly.

Moreover, in the said embodiment, the structure by which the supply piping 3 is connected with a gas supply apparatus via the hinge part 5, and the structure by which the discharge piping 4 is connected with the fixed duct 6 by being inserted in the long hole 61 are demonstrated. did.
However, the present invention is not limited to this, and the supply pipe 3 and the gas supply device may be connected by a flexible hose, and the discharge pipe 4 and the fixed duct 6 may be connected by a heat-resistant flexible hose.

It is sectional drawing which shows schematic structure of the fryer in 1st Embodiment of this invention. It is a top view which shows schematic structure of the fryer in 1st Embodiment of this invention. It is explanatory drawing explaining operation | movement of the fryer in 1st Embodiment of this invention. It is a top view which shows schematic structure of the fryer in 2nd Embodiment of this invention.

Explanation of symbols

  F1, F2 ... Flyer (liquid heating device), 1 ... Oil tank (liquid tank), 2, 10, 20 ... Microcombustor, 3 ... Supply piping, 4 ... Discharge piping, 5 ... Hinge (support) Part), 6 ... fixed duct, X ... oil (liquid)

Claims (4)

A liquid heating apparatus for heating a liquid in a liquid tank,
A micro combustor disposed in the liquid tank;
A supply pipe that is routed from the outside of the liquid tank to the microcombustor and supplies a mixed gas of fuel and oxidant to the microcombustor;
A discharge pipe that is routed from the microcombustor to the outside of the liquid tank and exhausts exhaust gas exhausted from the microcombustor to the outside of the liquid tank ;
A support portion for supporting the micro combustor, the supply pipe and the discharge pipe so as to be rotatable in the vertical direction;
A fixed duct for leading the exhaust gas discharged from the discharge pipe ,
The liquid heating apparatus , wherein a discharge end of the discharge pipe is inserted into the fixed duct through a long hole formed in the fixed duct over a moving range of the discharge end . When dust accumulates in the liquid tank, the microcombustor is disposed away from the dust accumulation area of the liquid tank by a distance where the dust does not burn due to heat generated by the microcombustor. The liquid heating apparatus according to claim 1.   3. The liquid heating apparatus according to claim 1, wherein a plurality of the micro combustors are provided, and the micro combustors are arranged horizontally.   The liquid heating apparatus according to claim 1, wherein a part of the discharge pipe is routed horizontally with respect to the micro combustor.

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