JP2003275105A - Gas heating type fryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas heating type fryer taking out a heating unit consisting of a burner and a heat exchanger therefrom to the outside of an oil tub, to be cleaned easily and finely. <P>SOLUTION: In the fryer, the oil tub 2 for reserving frying oil 1 and the heating unit 3 immersed in the frying oil 1 for heating are separated. The heating unit 3 is formed by integrating the burner 4 and the heat exchanger 5 to make a unit. The burner 4 mixes a fuel gas and air for burning and burns the mixture, and the heat exchanger 5 heats the fryer by passing the burned exhaust gas of the burner 4. The heating unit 3 is set inside the oil tub 2 in such a way that the heating unit 3 can be easily taken out of the oil tub 2. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commercial fryer used for frying and cooking deep-fried foods such as tempura and fries. More specifically, the frying oil is heated by the heat of burning combustion gas such as city gas or LP gas. It is about the fryer of the method.

[0002]

2. Description of the Related Art As a fryer of the type in which frying oil in an oil tank is heated by the heat of combustion of this type of gas, for example, FIG.
There is one shown in FIG.

In FIG. 11, an oil tank b is integrally provided in a body a which is a fryer body, and frying oil c such as cooking oil can be loaded in the oil tank b. An oil drain valve d that opens when the frying oil c is drained is attached to the bottom. Below the bottom of the oil tank b, a burner e for burning the fuel gas by the Bunsen combustion method is attached to the body a so that the heating immersion pipe f for passing the combustion exhaust gas of the burner e penetrates into the oil tank b. Installed, heating dip f
An exhaust pipe g for discharging the combustion exhaust gas that has passed therethrough is provided above the burner e side so as to project upward. In such a fryer, when the fuel gas is burned by the burner e, the combustion exhaust gas is exhausted from the exhaust pipe g through the heating immersion pipe f, but the frying oil c in the oil tank b is directly transferred from the burner e. Is directly heated and heat-exchanged with the combustion exhaust gas passing through the heating immersion pipe f to heat the frying oil c in the oil tank b.

In FIG. 12 as well, an oil tank b is integrally provided in a body a which is a fryer body, and frying oil c can be loaded in the oil tank b, and frying oil is provided at the bottom of the oil tank b. An oil drain valve d that opens when removing c is attached. A burner e for burning the fuel gas by the Bunsen combustion method is attached to the body a on the side of the oil tank b.
The first-stage heating immersion pipe h and the second-stage heating immersion pipe i, through which the combustion exhaust gas of FIG. 1 is passed, are installed so as to penetrate into the oil tank b, and the combustion exhaust gas of the burner e passes through the first-stage heating immersion pipe h. , And the second stage heating dipping pipe i in that order. A third return pipe j and an exhaust pipe g are connected in order to the second heating immersion pipe i, and an exhaust blower k is interposed between the third return pipe j and the exhaust pipe g. In such a fryer, when the burner e is burnt and the exhaust blower k is driven, the combustion exhaust gas of the burner e causes the first stage heating immersion pipe h, the second stage heating immersion pipe i, the third stage return pipe j, and the exhaust blower. Although it is exhausted from the exhaust pipe g through k in order, the frying oil c in the oil tank b is heated by exchanging heat with the combustion exhaust gas passing through the first-stage heating immersion pipe h and the second-stage heating immersion pipe i. It is like this.

The above-mentioned heating dip f or the first stage heating dip h
Alternatively, instead of the second-stage heating dipping pipe i, a serpentine or coil-shaped heating dipping pipe is provided so as to penetrate the oil tank b.

[0006]

By the way, in the above-mentioned fryer, the oil discharge valve d is periodically opened to open the oil tank b.
It is necessary to drain the oil inside and clean the inside of the oil tank b, but in the above structure, the heating immersion pipe is fixedly provided in the oil tank b, and the heating immersion pipe interferes with the bottom of the oil tank b. There is a problem that cleaning is difficult because it is difficult to put a hand or a cleaning tool in the inside, and there is also a problem that dirt cannot be reliably removed because cleaning is difficult.

The present invention has been made in view of the above points, and a heating unit consisting of a combustor and a heat exchanger can be taken out of an oil tank to facilitate cleaning and clean gas heating. It is an object to provide a formula flyer.

[0008]

A gas-heated fryer according to the present invention for solving the above-described problems comprises an oil tank 2 for storing frying oil 1 and a heating unit 3 for immersing and heating in frying oil 1.
And the heat exchanger 5 that separates the fuel gas and the combustion air and burns them by mixing, and the heat exchanger 5 that heats by passing the combustion exhaust gas of the combustor 4 into a unit. 3 is formed, and the heating unit 3 is set in the oil tank 2 so that the heating unit 3 can be taken out of the oil tank 2 outside. When the heating unit 3 in which the combustor 4 and the heat exchanger 5 are unitized is set in the oil tank 2, the combustion exhaust gas passing through the heat exchanger 5 and the frying oil 1 in the oil tank 2 when burned in the combustor 4 And are heat-exchanged with each other to heat the deep-fried oil 1 so that the deep-fried food can be cooked. When removing the frying oil from the oil tank 2 to clean the oil tank 2, the heating unit 3 can be taken out of the oil tank 2, and when cleaning the oil tank 2, there is no obstacle to clean the oil tank 2. And the inside of the oil tank 2 can be cleaned cleanly in every corner.

Further, the heating unit 3 is supported above the peripheral edge of the oil tank 2 so that the heating unit 3 can be turned up and down, and the heating unit 3 can be turned up and taken out. Is also preferable. Heating unit 3
When the oil is taken out of the oil tank 2, it can be taken out of the oil tank 2 by lifting and rotating it, and the heating unit 3 can be taken out easily. In addition, the heating unit 3 can be retracted and held at a position where it does not interfere with cleaning when the heating unit 3 is taken out of the bath.

A heating unit 3 set in the oil tank 2
It is also preferable that the position of is adjustable up and down. In this case, the depth of immersing the heating unit 3 in the frying oil 1 in the oil tank 2 can be changed by adjusting the vertical position of the heating unit 3, and the type of fried food can be changed by changing the heating position of the frying oil 1 in the oil tank 2. The frying oil 1 can be appropriately heated according to the amount of fried food.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The fryer is separated into a vessel body 6 as a fryer body and a heating unit 3. The body 6 which is the main body of the fryer is formed as shown in FIG. 2, and a plurality of installation legs 7 for installing on the floor are integrally provided at the lower part of the body 6. The container 6 is provided with an oil tank 2 having an open upper surface, and the frying oil 1 such as cooking oil can be loaded into the oil tank 2. An oil drain valve 8 is provided below the bottom of the oil tank 2, and the frying oil 1 in the oil tank 2 can be discharged by opening the oil drain valve 8. A rear rising wall 9 that rises upward from the upper end of the oil tank 2 is provided upright on the rear part of the body 6, and a basket hanger 10 is provided on the rear rising wall 9 so that the basket for receiving the fried food that has been fried is a basket hanger. It can be multiplied by 10.

As shown in FIG. 3, the heating unit 3 mainly comprises a combustor 4 and a heat exchanger 5, and the combustor 4 and the heat exchanger 5 are integrally formed. The combustor 4 is shown in FIG.
As shown in FIG. 5, a fuel gas such as city gas or LP gas and air can be mixed and burned. A casing 11 in the shape of a rectangular box whose upper surface is opened and whose bottom is closed is integrally provided with a combustion outer cylinder 12 so as to penetrate through one side wall of the housing 11. The end is closed by a closing plate 13. Combustion outer cylinder 12
A trumpet-shaped combustion inner cylinder 14 is internally provided, and a gas ejection port 15 for ejecting fuel gas is provided in the center of the combustion inner cylinder 14 and the outer periphery of the gas ejection port 15 of the combustion inner cylinder 14 is provided. Has a large number of air jets 16. A gas supply nozzle 17 is integrally inserted through the closing plate 13 so as to penetrate the closing plate 13, and the tip of the gas supply nozzle 17 is connected to the gas ejection port 15. A gas pipe connection port 18 is provided at the base of the gas supply nozzle 17, and the end of the gas supply pipe 19 introduced from the upper opening of the housing 11 is connected to the gas pipe connection port 1.
It is connected to 8.

The combustion outer cylinder 12 is located in the housing 11.
The air inlet 20 is provided in the air inlet 20
Are communicated with the outer combustion cylinder 12 and the inner combustion cylinder 14. An air supply pipe 21 is connected to the air introduction port 20 so that combustion air can be forcibly supplied to the air introduction port 20 via the air supply pipe 21 by a blower. When fuel gas is supplied from the gas supply pipe 19,
Fuel gas is ejected from the gas ejection port 15 into the combustion inner cylinder 14 via the gas pipe connection port 18 and the gas supply nozzle 17, while air is supplied from the air supply pipe 21 via the air introduction port 20. Combustion outer cylinder 12 and trumpet-shaped combustion inner cylinder 14
Between the tip of the air and the air outlet 1 of the combustion inner cylinder 14
Air is ejected from the combustion inner cylinder 14 from 6, and the fuel gas and the air are mixed in the combustion inner cylinder 14 to form a flame F in the combustion outer cylinder 12 for combustion.

In this example, the heat exchanger 5 has header tubes 23 and 24 on both sides, and a plurality of communication tubes 25 are provided between the header tubes 23 and 24 on both sides to connect them. Has been done. One header tube 2 of this heat exchanger 5
3, the end of the combustion outer cylinder 12 of the combustor 4 is integrally connected, and the combustor 4 and the heat exchanger 5 are integrated. An exhaust port 26 is provided on the other header pipe 24 so as to project upward, and an exhaust pipe 27 is connected to the exhaust port 26. In the heat exchanger 5, the plurality of communication pipes 25 are arranged in upper and lower two stages and the positions thereof are staggered. In the heat exchanger 5, the combustion exhaust gas from the combustor 4 is transferred to the header pipe 2
3, plural communication pipes 25, header pipe 24, exhaust port 2
6, the exhaust pipe 27 flows in this order to be exhausted, and the exhaust gas flows through these portions to exchange heat with the frying oil 1.

The heating unit 3 in which the combustor 4 and the heat exchanger 5 are thus integrated is set so as to be placed in the oil tank 2 of the container 6, and is immersed in the frying oil 1 in the oil tank 2. At this time, for example, the heating unit 3 is suspended and set as shown in FIG. That is, the hanging hooks 28 are provided on both sides of the heating unit 3 so as to project upward, and the upper ends of the hanging hooks 28 are hooked on the flanges 29 on both sides of the upper end of the oil tank 2. When the heating unit 3 is set in the oil tank 2, the portion of the heating unit 3 to be immersed in the oil tank 2 is preferably formed of stainless steel such as SUS304.

When the heating unit 3 is immersed in the oil tank 2 and burned in the combustor 4, the combustion exhaust gas passes through the heat exchanger 5, but heat exchange is performed when the combustion exhaust gas passes through the heat exchanger 5. The frying oil 1 in the oil tank 2 is heated and the fried food can be cooked. When cleaning the oil tank 2, the drain valve 8 is opened and the frying oil 1 in the oil tank 2 is drained. At this time, in the present invention, the heating unit 3 can be removed from the oil tank 2 by pulling it upward. It is possible to easily clean the oil tank 2 by retracting the heating unit 3 to a position where the heating unit 3 does not get in the way, and it is possible to clean every corner of the oil tank 2 cleanly. Further, the heating unit 3 can be easily cleaned.

FIG. 6 shows another example of the structure in which the heating unit 3 can be taken out freely. In the case of this example, one end of an arm 30 supporting the heating unit 3 is rotatably attached to a flange 29 at the rear portion of the oil tank 2 by a shaft 31. Then, the arm 30 can be rotated to put the heating unit 3 into the oil tank 2 or take the heating unit 3 upward from the oil tank 2. By thus rotating the heating unit 3 up and down so that the heating unit 3 can be taken in and out, the heating unit 3 can be easily taken in and out.

FIG. 7 shows another example of setting the heating unit 3 in the oil tank 2. In the case of this example, the oil tank 2
A support plate 32 such as a claw of a forklift is arranged therein, and the heating unit 3 is set on the support plate 32 to set the heating unit 3 in the oil tank 2. A screw shaft 33 is rotatably provided on the flange 29 of the oil tank 2, a screw hole at the base of the support plate 32 is screwed into the screw shaft 33, and the screw shaft 33 is attached to the upper end of the screw shaft 33. An operation handle 34 for rotating operation is attached. With this configuration, the heating unit 3 can be lifted up with respect to the support plate 32 and the heating unit 3 can be taken out, and the support plate can be rotated by operating the operation handle 34 and the screw shaft 33. 32 can be moved up and down, and the depth of immersing the heating unit 3 in the frying oil 1 can be adjusted. By adjusting the depth of the heating unit 3 immersed in the frying oil 1 in this way, the frying oil 1 is heated at an appropriate position so that the type of the frying food to be deep-fried and cooked corresponds to the amount of the frying oil and the frying oil 1 is not deteriorated as much as possible. You can

A combination of the structures shown in FIGS. 6 and 7 is also possible. That is, as shown in FIG. 6, the heating unit 3 can be set in the oil tank 2 or taken out from the oil tank 2 by rotating the heating unit 3 up and down, and the heating unit 3 is set in the oil tank 2. Then, as shown in FIG. 7, the heating unit 3 may be adjusted in vertical position.

In the example of the above embodiment, the heat exchanger 5 has header pipes 23 and 24 on both sides, and a plurality of communication pipes 25 for communicating between the header pipes 23 and 24 on both sides. Although the header type of erected is described, it is not limited to this type, and it may be wound in a coil shape as shown in FIG. 8 or bent in a serpentine shape as shown in FIG. It may be one. Further, in the case of the header type heat exchanger 5 in which the communication pipe 25 is installed between the header pipes 23 and 24, the communication pipe 25 is formed as shown in FIG.
Even if the multi-stage is used, as shown in FIG.
It may be a single stage.

[0021]

The invention according to claim 1 of the present invention separates the oil tank for storing the frying oil from the heating unit for immersing and heating the frying oil, and mixing the fuel gas and the combustion air for combustion. And a heat exchanger for heating by passing the combustion exhaust gas of this combustor together to form the above-mentioned heating unit, and the heating unit can be taken out of the oil tank Since the combustion unit and the heat exchanger are integrated into one unit and the heating unit is set in the oil tank, the combustion exhaust gas passing through the heat exchanger and the frying oil in the oil tank heat when burned in the combustor. Not only can the frying oil be heated and the frying oil can be cooked, but when removing the frying oil from the oil tank to clean the inside of the oil tank, the heating unit can be taken out of the oil tank to clean the inside of the oil tank. If there is no areas of concern the way it is possible to easily clean the oil vessel are those that can be cleaned to clean the inside of the oil tank every corner.

The invention of claim 2 of the present invention is the invention of claim 1.
In the above, since the heating unit is supported at the upper part of the periphery of the oil tank so that the heating unit can be rotated up and down, and the heating unit can be rotated upward to be taken out, the heating unit is taken out of the oil tank to the outside of the tank. At this time, the heating unit can be taken out from the oil tank by lifting and rotating it upwards, and the heating unit can be easily taken out.A position where the heating unit is taken out of the tank and does not interfere with cleaning. It can be evacuated to and held.

The invention of claim 3 of the present invention is the invention of claim 1.
In the above, since the position of the heating unit set in the oil tank can be adjusted up and down, the depth at which the heating unit is immersed in the frying oil in the oil tank can be changed by adjusting the vertical position of the heating unit. By changing the heating position of the frying oil, the frying oil can be appropriately heated according to the type and amount of the deep-fried food.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an example of an embodiment of the present invention viewed from the front.

2A and 2B show a container having the above oil tank, wherein FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 2C is a side view.

FIG. 3 shows the heating unit of the above, (a) is a plan view,
(B) is a side view.

FIG. 4 shows the combustor of the above, (a) is a plan view, (b)
Is a partially omitted cross-sectional view as seen from the front.

FIG. 5 is a cross-sectional view showing an enlarged main part of the combustor of the above.

FIG. 6 is a schematic sectional view of another example of the above when viewed from the side.

FIG. 7 is a schematic cross-sectional view of another example of the above when viewed from the side.

FIG. 8 is a partially cutaway front view of another example of the above heat exchanger.

FIG. 9 is a partially cutaway plan view of another example of the above heat exchanger.

10A and 10B are front views of another example of the heat exchanger.

FIG. 11 is a sectional view of a conventional example.

FIG. 12 is a cross-sectional view of another conventional example.

[Explanation of symbols]

1 deep-fried oil 2 oil tank 3 heating units 4 Combustor 5 heat exchanger

Claims (3)

[Claims] 1. A combustor which separates an oil tank for storing frying oil and a heating unit which is immersed in the frying oil for heating and mixes fuel gas and combustion air for combustion and a combustion exhaust gas of this combustor. Gas heating, characterized in that the heating unit is integrally formed with a heat exchanger for heating to form the above heating unit, and the heating unit is set in the oil tank so that the heating unit can be taken out of the oil tank. Ceremony flyer. 2. The heating unit is supported on the upper part of the peripheral edge of the oil tank so that the heating unit can be turned up and down, and the heating unit can be turned up and taken out. Gas-heated fryer as described. 3. The position of the heating unit set in the oil tank is vertically adjustable.
Gas-heated fryer as described.