KR20020078136A - gas frying structure having improved thermal efficiency - Google Patents

Abstract

PURPOSE: A structure of a gas frying apparatus is provided to allow an oil tub to be fabricated in a compact size by installing a central combustion chamber in the oil tub and inserting a fiber burner in the central combustion chamber. CONSTITUTION: A combustion chamber and an electric heating pipe(1100) are installed at a central space of an oil tub. A surface combustion burner(1200) is inserted into the combustion chamber. Gas sprayed from a nozzle and air sucked in an air sucking section are properly mixed with each other by a rotation of a fan impeller. Mixed gas is sprayed into a surface of a metal fiber through a mixing chamber of a burner and burned while generating a red flame or a blue flame. Hot combustion gas is exhausted to an exterior through a funnel by way of the electric heating pipe(1100), a rear portion of the oil tub, lower and upper side ends of the oil tub, and a rear portion of the oil tub, so that the thermal efficiency thereof is improved.

Description

Gas frying structure having improved thermal efficiency

The present invention relates to a structure of a gas fryer, and more particularly, to a structure of a gas fryer which improves thermal efficiency by maximizing a heat transfer area by optimizing a shape of an oil tank and optimizing a flow of combustion gas.

Typically, a conventional gas fryer is provided with a plurality of heat pipes 20 and a plurality of burners 30 in the oil tank 10, as shown in Figures 1a to 1c and the gas blown out from the inlet of the heat pipes 20 It has a structure to burn using air. 1A shows a front view, FIG. 1B shows a side view, and FIG. 1C shows a sectional view, respectively. Since the hot gas burnt by the burners 30 passes through several heat transfer pipes 20 installed in the oil tank, it becomes heat transfer and gathers in the collection pipe 40 and is discharged to the outside through the flue 50. The structure in the tank is complicated and the cleaning work is inconvenient. In addition, it is a bunsen-type or direct-type bottom exhaust combustion method that requires secondary air, so the heat transfer effect is very low and there are many harmful substances in the exhaust gas, which easily pollutes the kitchen room and is harmful to the human body and emits a lot of pollutants to the atmosphere. There is a problem.

In addition, another example of the conventional structure as a more improved structure is the pre-mixing chamber 110-1 for mixing the gas and air on both sides of the oil tank 100, as shown in Figure 2a to 2c It is a structure in which two burners 110 including ceramic plates 110-2 for burning mixed gas are installed. The air sucked from the fan 130 and the gas injected from the nozzle 120 are burner mixing chamber 110. It is a structure that is burned on the ceramic plate surface while being ejected to the ceramic plate (110-2) through -1). Similarly, FIG. 2A shows a front view, FIG. 2B shows a side view, and FIG. 2C shows a sectional view, respectively. The hot gas burned by the burner 110 is heated in both side walls 100-1 of the oil tank 100, and then collected again in the collecting pipe 140. The collected hot gas heats the back side of the tank and is exhausted through the flue 150. Therefore, the above structure has a low heat efficiency because the total heat transfer area of the oil tank 100 is small. In addition, since the burner of the burner is burned at both places by using the ceramic plate 110-2, it is difficult to control both combustion balances, and the ceramic plate is weak to brittleness and thermal shock, thereby causing problems in handling and durability. Moreover, as the burners are installed on both sides, the oil tank has a problem that the capacity of the oil tank is larger than necessary.

It is therefore an object of the present invention to provide an improved gas fryer structure that can solve the problems with the conventional gas fryer described above.

Accordingly, an object of the present invention is to provide a gas fryer structure in which the size of the tank is compact compared to an oil tank of the same capacity by installing one central combustion chamber as a heat transfer tube in the oil tank and inserting a cylindrical metal fiber burner therein.

Another object of the present invention is to provide a gas fryer structure that can increase the heat transfer area to reduce gas consumption and improve thermal efficiency.

It is another object of the present invention to provide a structure of a gas fryer that can easily clean the oil tank, increase the efficiency of the burner and minimize the emission of harmful exhaust gas.

Still another object of the present invention is to provide a structure of a gas fryer, which makes it easy to know whether a burner is abnormally operated from the outside and ensures safety when the door is opened.

According to an aspect of the present invention for achieving the above objects, the structure of the improved gas fryer, the combustion heat generated by the combustion gas by installing a surface combustion burner in one central combustion chamber formed in the central subspace of the oil tank 1 And a combustion gas flow path which is to be transferred to the oil tank and separates both side and rear spaces of the oil tank into upper and lower ends, respectively, so that the combustion gas can sufficiently transmit combustion heat along the formed combustion gas flow path. It is characterized by.

Preferably, the burner of the burner may have a metal fiber coated on a cylindrical mixing chamber surface in order to be able to use both radiation and blue salts extensively. In addition, a flame window may be further provided on the front of the gas fryer to easily determine whether there is an abnormality such as the burned state of the burner from the outside, and to safely discharge the cooking oil and the like contained in the oil tank. The door opening and closing safety device for stopping the operation of the gas fryer may be further provided to open the door.

1a to 1c and 2a to 2c are views showing the structure of a conventional gas fryer

3a to 3f are views showing the structure of a gas fryer according to an embodiment of the present invention

4A and 4B show front and side views of the gas fryer of the present invention.

The above and other objects, features, and structural advantages described above will become more apparent from the detailed and preferred embodiment of the present invention described below with reference to the accompanying drawings.

3A to 3F show the structure of the gas fryer manufactured according to the embodiment of the present invention. 4A and 4B show front and side shapes of the gas fryer of the present invention. Figure 3a is a plan view of the gas fryer, Figure 3b is a cross-sectional view taken along the centerline of Figure 3a, Figure 3c is a cross-sectional view showing the burner assembly structure, Figure 3d is a front view, Figure 3e is a side cross-sectional view Figure 3f is a rear Show cross sections respectively.

Referring to the drawings, a single combustion chamber and a heat pipe 1100 are installed in a lower central space of the oil tank, and a cylindrical surface combustion burner 1200 is inserted therein. The air sucked from the fan inlet 1300-1 of the surface combustion burner 1200 and the gas injected from the nozzle 1400 are completely premixed in an optimal state by the rotation of the fan impeller 1300-2. The mixed gas is ejected through the mixing chamber 1200-2 of the burner to the coated metal fiber surface 1200-1 and combusted in the form of red flame or blue flame by the ignition source. The hot gas generated at the time of combustion is caused by the forced flow of the fan impeller 1300-2, so that the heat transfer to the oil tank is made by the forced convection phenomenon, the heat transfer effect is greatly increased. The high temperature combustion gas is sequentially installed in the combustion chamber (heat pipe: 1100) installed in the lower space in the center of the oil tank, the lower end 1500 of the rear side of the oil tank, the lower / upper portions 1600 and 1700 of both sides of the oil tank, and the upper end 1800 of the rear side of the oil tank. After passing through the flue (1900) is exhausted to the outside, the heat transfer surface becomes an oil tank, the thermal efficiency is high. Here, the heat insulating material and the heat insulating material cover are installed on each of the upper and lower ends 1600 and 1700 and the upper and lower ends 1500 and 1800 of the rear side of the tank so that heat is not discharged to the outside while passing through each pipe. It was. In addition, the combustion gas flow path 2600 was formed by separating the upper and lower end diaphragms 2400 and the upper and lower end diaphragms 2500 on both sides of the oil tank, respectively. The shape of the tank and the combustion system can reduce the size of the tank, simplify the structure of the equipment and increase the thermal efficiency. In addition, the completely premixed mixed gas is a harmful gas because combustion is performed in the surface combustion burner 1200 using the metal fiber 1200-1, which can use both red flame and blue flame regions. For example, Co, NOx and the like has an effect of becoming very small. Therefore, the kitchen becomes clean and high combustion is possible, so the size is small and the structure is simple.

It is convenient to check whether the state of the flame burned by the burner 1200 is normal or not, whether it is normal or not through the internal flame window 2000-1 and the external flame window 2000. In addition, when discharging or down the cooking oil in the oil tank through the drain valve 2200, the door 2300 must be opened and operated. Therefore, the door is opened and closed to operate the safety switch 2100 to safely operate the device. To do it.

As a result, in the embodiment of the present invention, the surface combustion burner is installed in one central combustion chamber formed in the central lower space of the oil tank so that the heat of combustion generated by the combustion gas is primarily transmitted to the oil tank, and both sides of the oil tank are And forming a combustion gas flow path that separates the rear space into upper and lower ends, respectively, so that the combustion gas can sufficiently transmit combustion heat along the formed combustion gas flow path.

The present invention described above has been described based on the embodiments based on the illustrated drawings, but is not limited thereto, and various modifications may be made without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is obvious that variations and modifications are possible, as well as other embodiments that are equivalent. For example, it is a matter of course that the shape and structure of the inside and outside of the fryer can be changed differently depending on the matter within the scope not departing from the technical idea of the present invention.

According to the structure of the present invention as described above, it has a small size and light structure compared to the oil tank of the same capacity, there is an effect that is easy to handle and easy to clean. In addition, since the heating surface of the oil tank is spread over the entire surface including the center of the oil tank, the food can be evenly fried and the heat efficiency is high, thereby reducing energy and cooking time.

Moreover, the mixed gas mixed by premixing method is directly burned in the cylindrical surface combustion burner, so the structure is simple and maintains the optimal combustion state, which makes the room clean and reduces the air pollution and the combustion range is low due to high efficiency and low emission of harmful substances. There is a wide range of advantages that the thermal shock and durability are strong. In addition, the burner portion of the device can be easily identified through the flame window, and there is an advantage that the other operations can be convenient and safe by attaching a door opening and closing safety device.

Claims (5)

In the structure of the gas fryer: A surface combustion burner is installed in one central combustion chamber formed in the central lower space of the oil tank so that the combustion heat generated by the combustion gas is primarily transferred to the oil tank, and both side and rear spaces of the oil tank are respectively moved upward and downward. And a combustion gas flow path separated from each other so that the combustion gas can sufficiently transmit combustion heat along the formed combustion gas flow path. The gas fryer structure according to claim 1, wherein the combustion air and the gas of the burner are mixed in a premixed manner in which they are mixed by an impeller of a fan. 2. The gas fryer structure according to claim 1, wherein the burner of the burner has a metal fiber coated on the surface of the cylindrical mixing chamber to enable widespread use of both radiation and blue salts. The gas fryer structure according to claim 1, further comprising a flame window on a front surface of the gas fryer to enable the outside to easily determine whether there is an abnormality such as a combustion state of the burner. 5. The gas fryer structure according to claim 4, further comprising a door opening and closing safety device which stops the operation of the gas fryer when the door is opened to safely discharge the cooking oil or the like contained in the oil tank.