KR101250875B1 - Gas fryer - Google Patents

Abstract

The present invention relates to a gas fryer, which comprises a gas tank, a first tube, a second tube and a third tube which are arranged in order to communicate with the inner lower portion of the oil tank, a burner fixedly installed on the first tube, A gas fryer comprising a tube and a buffle plate disposed inside the third tube, wherein the diameter of the first tube is the largest, the second tube has a medium diameter, and the diameter of the third tube is The present invention provides a gas fryer capable of maximizing thermal efficiency by keeping the flow rate of the combustion gas at a constant level.

Description

Gas fryer {GAS FRYER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas fryer, and more particularly, to a gas fryer capable of maximizing thermal efficiency by keeping a flow rate of a combustion gas heating along a tube installed in a gas tank.

Recently, a variety of deep-fried dishes have become popular due to the increase in the number of fast food restaurants such as fast-food restaurants, break-out shops, and chicken shops due to changes in lifestyle. Fried dishes are prepared by cooking various kinds of food such as fish, vegetables, meat and so on, and they are easy to be cooked and have a good taste.

As the frying dish becomes popular, the demand for the fryer, which is the cooking means, is gradually increasing. BACKGROUND ART [0002] A fryer generally used at present includes an oil tank for filling oil, a tube for transmitting combustion heat to the oil installed inside the oil tank, and a burner installed at one end of the tube for supplying combustion heat.

However, in the related art, since the tube is merely formed in a straight line shape, the residence time of the combustion heat is shortened, so that the heat transfer efficiency is remarkably lowered and the consumption of the fuel is unnecessarily increased. Accordingly, the present inventor proposed a frying device (hereinafter, referred to as 'Prior Art 1') in which the path of the heat of combustion is elongated to improve the heat transfer efficiency and fuel efficiency in the registered patent No. 10-0822434.

However, in the case of the prior art 1, since the upper and lower portions of the oil tank can only be heated uniformly, the frying powder settled in the lower portion of the oil tank is carbonized, thereby shortening the service life of the oil. Accordingly, the present inventor has found that, as shown in FIG. 1, in the registered patent 10-0866494, a buffle plate 17 is provided in two tubes 13b and 13c without a burner 15, A gas fryer 10 (hereinafter, referred to as "prior art 2") which blocks the combustion heat from moving downward has been proposed.

However, in the case of the prior art 2, the diameters of the tubes 13b and 13c are equal to each other, and the delivery speed of the combustion heat is slowed down. Specifically, the high-temperature combustion gas generated in the burner 15 is supplied through the left tube 13a and then through the right tubes 13b and 13c in order, and then exhausted. In this process, The temperature is gradually lowered because the heat is transmitted to the oil through the tubes 13b and 13c. As the temperature of the combustion gas decreases, the volume of the combustion gas decreases according to Boyle-Charles's law. Therefore, only the volume of the heat source is reduced in a state where the diameter of the tubes 13b and 13c is constant, and the heat transfer rate is sharply decreased toward the last tube 13c. As a result, a temperature deviation must be generated for each zone in the oil vat 11, and such a temperature deviation will eventually degrade the taste of the frying dish.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a gas fryer capable of improving heat transfer efficiency by keeping the flow velocity of a combustion gas moving along a tube provided in a gas oil tank constant in the entire region of the tube .

It is another object of the present invention to provide a gas fryer capable of maintaining a cool zone by preventing combustion heat of a combustion gas from being transmitted to a lower portion of a gas oil tank.

As means for solving the above-mentioned technical problem,

The present invention relates to an air conditioning system comprising: an oil tank; A first tube, a second tube, and a third tube that are installed to communicate with the inner lower portion of the oil vat in order; A burner fixedly installed on the first tube; And a buffle plate provided on the inner side of the second tube and the third tube, wherein the diameter of each of the tubes is a first tube, a second tube, and a third tube. Lt; / RTI >

In this case, it is preferable that the first tube, the second tube, and the third tube have a cylindrical shape.

The buffer plate may include a plate-like body vertically installed on the inner side of the second tube and the third tube, and having a combustion gas flow hole at regular intervals along the longitudinal direction; And a plurality of vanes extending from both sides of the body and being formed to cross each other.

In addition, the buffle plate may further include a plurality of auxiliary vanes extending in the left-right direction from the lower portion of the body.

In this case, it is preferable that the vane has a semicircular shape, and the auxiliary vane has a structure capable of partially blocking the lower end of each tube, and is closely attached to the inner circumferential surface of the second tube and the third tube.

According to the present invention, the diameter of the three tubes communicating with each other so that the combustion gas supplied from the burner can be exhausted to the outside can be made gradually smaller, so that the flow velocity of the combustion gas can be kept constant to keep the heat transfer rate uniform have.

Further, by providing the buffle plate in the tube, the residence time of the combustion gas is increased and the heat transfer to the oil can be promoted.

In addition, by providing an auxiliary blade at the bottom of the buffle plate and spacing the tube from the tube at a constant height, it is possible to prevent the combustion heat from being transferred to the cool zone under the oil tank.

1 is a view showing a conventional gas fryer,
2 is a plan view of a gas fryer according to a preferred embodiment of the present invention,
3 is a front view of a gas fryer according to a preferred embodiment of the present invention,
4A and 4B are respectively a front view and a rear view showing the oil mist of the gas fryer according to the preferred embodiment of the present invention,
5 is an exploded perspective view of a burner of a gas fryer according to a preferred embodiment of the present invention,
6 is a view showing a buffle plate of a gas fryer according to a preferred embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention, parts not related to the description are omitted, and similar parts are denoted by similar reference numerals throughout the specification.

Fig. 2 is a plan view of a gas fryer according to a preferred embodiment of the present invention, Fig. 3 is a front view of a gas fryer according to a preferred embodiment of the present invention, Figs. 4a and 4b are cross- Fig. 5 is an exploded perspective view of a burner of a gas fryer according to a preferred embodiment of the present invention, and Fig. 6 is a view showing a buffle plate of a gas fryer according to a preferred embodiment of the present invention .

2 to 6, a gas fryer 100 according to a preferred embodiment of the present invention comprises a oil tank 110, a tube 120, a burner 150, and a buffle plate 170 .

First, the oil tank 110 is a space filled with oil and cooked, and has a substantially rectangular shape. In this case, the middle portion of the bottom surface of the oil tank 110 is sloped downward so that oil and food debris generated after cooking can be collected. The collected oil and food debris are discharged to the outside through a discharge valve 111 installed on the bottom surface of the oil tank 110.

Next, the tube 120 is installed through the lower part of the oil vat 110 as a means for transferring and heating the high-temperature combustion heat generated from the burner 150 to oil. In the present invention, the tubes 120 are composed of a first tube 121, a second tube 122 and a third tube 123 arranged in parallel with each other.

In this case, the burner 150 is installed at the front end of the first tube 121 to supply the combustion gas, and the exhaust duct 140 is installed at the rear end of the third tube 123, Gas is discharged.

The tubes 121, 122, and 123 communicate with each other in order to supply and discharge the combustion gas as described above. A rear cap 131 is fixed to the rear end of the first tube 121 and the second tube 122 by partition walls 132 to partition the third tube 123, The front cap 130 is fixed to the front end of the tube 122 and the third tube 123 so that the combustion gas does not leak to the outside and the first tube 121, The three tubes 123 can be passed through in order.

The gas fryer 100 according to the present invention is characterized in that the tubes 121, 122 and 123 have different diameters. That is, the diameter of the first tube 121 is the largest among the tubes 121, 122 and 123, the diameter of the second tube 122 is medium, Is formed to have the smallest diameter.

As described above, if the volume of the space through which the combustion gas flows is gradually reduced, a constant flow rate can be obtained from when the combustion gas is introduced to when it is discharged. Specifically, since the high temperature combustion gas supplied from the burner 150 continuously discharges the combustion heat, the temperature gradually decreases toward the third tube 123, and the volume of the combustion gas decreases according to the Boyle-Charles law do. Therefore, if the diameter of each of the tubes 121, 122, and 123 is the same, the flow rate of the combustion gas in the third tube 123 is reduced, and the combustion heat can not be transmitted smoothly.

In the present invention, the diameters of the tubes 121, 122, and 123 are sequentially reduced in consideration of the volume reduction rate of the combustion gas. Due to such a configuration, the volume of the tube is reduced by the volume reduction of the combustion gas, so that the combustion gas also flows at the same speed as the first tube 121 in the third tube 123 as well. Therefore, the heat transfer rate due to the combustion gas can be kept constant without falling depending on the position.

The tubes 121, 122, and 123 are preferably cylindrical. The reason for this is that, if it is formed into a cylindrical shape, it is easier to manufacture than the elliptical type, which can reduce the production cost and also improves the weldability and the quality of the oil tank.

Subsequently, the burner 150 is installed at the front end of the first tube 121 to supply the combustion gas as a heat source to the tube 120. In the present invention, as shown in FIG. 5, a premixed surface combustion burner 151 capable of close-up heating is used as the burner 150.

In this case, the premixed surface combustion burner 151 is composed of a main body 152, a cover 157, a distribution plate 159, a metal fiber 158 and an ignition plug 160.

Specifically, the main body 152 is configured to supply a mixer of the introduced fuel gas and air toward the metal fiber 158. The main body 152 has a suction port 153 and a blowing fan 155 on one side and a discharge port 154 are formed. Accordingly, when the blowing fan 155 is rotated, the fuel gas and air flow into the discharge port 154 through the suction port 153.

The cover 157 is coupled to the flange 152a of the body 152 using a fastening means such as a bolt 161 in a configuration for installation of the remaining components. In this case, a gasket 162 is interposed between the cover 157 and the main body 152.

The distribution plate 159 is configured to uniformly distribute a mixer of the introduced fuel gas and air to the metal fiber 158. A bracket 163 is used between the cover 157 and the main body 152 Respectively. In this case, combustion gas flow holes 159a and 159b of different sizes are concentrically formed on the rim of the distribution plate 159, so that a mixture of the fuel gas and the air is passed.

The metal fiber 158 is inserted into the center of the cover 157 where the fuel gas and air are burned. In the present invention, the kind of the metal fiber 158 is not particularly limited, and a conventional metal fiber produced by a method such as weaving or sintering can be used.

The ignition plug 160 is installed adjacent to the metal fiber 158 on the cover 157 as a means for generating a spark in a mixture of fuel gas and air discharged through the metal fiber 158 .

The configuration of the burner 150 has been described in detail above. A gas governor 164 is connected to the burner 150 constructed as described above.

The gas governor 164 is a means for controlling the amount of fuel gas and air sucked into the burner 150. For example, the gas governor 164 may increase the amount of the fuel gas when the amount of air is increased, So that a certain proportion of the mixer is supplied to the burner 150.

The buffet plate 170, which is a final configuration of the present invention, is configured to promote a heat transfer by forming a vortex in the flow of the combustion gas flowing along the tube 120, And the third tube 123, respectively. Hereinafter, the present invention will be described in detail with reference to the drawings.

The buffle plate 170 is composed of a body 171 and a blade 173 as shown in FIG.

Specifically, the body 171 has a plate shape and is installed perpendicularly to the inside of the second tube 122 and the third tube 123. In this case, a combustion gas flow hole 172 is formed at a predetermined interval in the body 171 so that the combustion gas can pass therethrough.

The wings 173 are formed on both sides of the body 171 at regular intervals to control the flow of the combustion gas passing through the combustion gas flow holes 172 in the zigzag direction. The wing 173 is formed at the rear end of the combustion gas flow hole 172 to convert the direction of the combustion gas flow to 90 degrees. When the direction of flow of the combustion gas is controlled to be constant, the combustion gas passes through the combustion gas flow holes 172 to form a vortex, thereby promoting the heat transfer.

Meanwhile, it is preferable that the shape of the vanes 173 is formed to be rounded in a substantially semicircular shape. The blade 173 and the auxiliary wing 175 to be described later are brought into close contact with the inner circumferential surfaces of the second tube 122 and the third tube 123 to prevent the gap of the buffle plate 170 And a separate fixing means is unnecessary, so that the installation can be facilitated.

Subsequently, an auxiliary blade 175 protruding in the lateral direction may be provided at the lower end of the body 171. The auxiliary vane 175 prevents the flow of the buffet plate 170 from the lower portion of the second tube 122 and the third tube 123 to a predetermined height to block the heat transfer to the lower portion, Can be maintained as it is.

The basic configuration of the gas fryer according to the preferred embodiment of the present invention has been described above. However, the present invention is not limited thereto, and various known configurations may be additionally provided.

For example, the control panel 180 may be formed on the case 112 provided outside the oil vat 110. The control panel 180 is a means for controlling the overall operation of the gas fryer 100. More specifically, the control panel 180 includes a power switch for turning the power on / off, a temperature for setting the heating temperature of the oil A timer for setting a heating time of the oil, a switch for controlling opening and closing of various valves, a display unit for displaying the state of each configuration, and the like.

Further, a support frame 113 may be installed below the gas fryer 100. In this case, the support frame 113 supports the above-described respective constitutions of the present invention, and can additionally include a height adjusting pedestal (not shown) and a wheel (not shown) to improve installation and mobility.

The configuration of the gas fryer according to the preferred embodiment of the present invention has been described above. Hereinafter, the operation of the present invention will be described in detail with reference to the drawings.

First, the oil is put into the oil tank 110, the power switch is turned on, and the burner 150 is operated by setting the heating temperature, time, and the like. Specifically, in the burner 150, fuel gas and air are introduced through the suction port 153 and mixed by the blowing fan 155. The mixed gas thus mixed is discharged through the discharge port 154 and the distribution plate 159 To the metal fiber 158 through the metal wire 158. [ In this state, when the spark is generated by the spark plug 160, the mixer is ignited and starts to burn at a high temperature.

Thereafter, the high temperature combustion gas flows along the first tube 121, moves to the second tube 122 through the rear cap 131, and then continuously flows through the front cap 130 to the third The oil is heated while moving to the tube 123, and then discharged to the outside through the exhaust duct 140.

In this case, since the diameter of the third tube 123 is smaller than that of the second tube 122, the flow velocity of the combustion gas is not reduced even in the third tube 123, and the heat transfer rate is maintained constant. The combustion gas is flowed in zigzag form from the second tube 122 and the third tube 123 by the buffet plate 170 and more particularly the vane 173 to form vortex It will heat up rapidly.

Meanwhile, since the buffet plate 170 is spaced apart from the second tube 122 and the third tube 123 by the auxiliary vane 175 at a predetermined height, the bottom flow of the combustion gas is blocked, 110) is maintained at a high temperature without being heated. Therefore, the frying powder collected at the lower portion of the oil tank 110 is not carbonized, so that the service life of the oil can be extended.

Subsequently, when the oil is heated to the set temperature by the above-described method, the suction of the fuel gas and the air is blocked by the control panel, and the operation of the burner 150 is stopped. In this case, when the temperature of the oil becomes lower than the set temperature, the fuel gas and air are sucked in again as described above, and the burner 150 is restarted to heat the oil.

The preferred embodiments of the present invention have been described in detail with reference to the drawings. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

Therefore, the scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning, range, and equivalence of the claims are included in the scope of the present invention. .

100: gas fryer 110: oil tank
111: discharge valve 112: case
113: support frame 120: tube
121: first tube 122: second tube
123: third tube 130: front cap
131: rear cap 132:
140: exhaust duct 150: burner
151: Premixed surface combustion burner 152: Main body
152a: flange portion 153: inlet
154: discharge port 155: blowing fan
157: cover 158: metal fiber
159: Distribution plate 160: Spark plug
161: bolt 162: gasket
163: Bracket 164: Gas governor
170: Buffet plate 171: Body
172: combustion gas flow hole 173: wing
175: Auxiliary wing 180: Control panel

Claims (5)

An oil tank; A first tube, a second tube and a third tube communicating with each other in an inner lower portion of the oil tank; A burner fixedly installed on the first tube; And a buffle plate provided on the inner side of the second tube and the third tube,
The diameter of each of the tubes is a first tube> a second tube> a third tube,
The buffle plate
A plate body vertically installed inside the second tube and the third tube and having a combustion gas flow hole at regular intervals along the longitudinal direction;
A plurality of blades extending from both sides of the body and crosswise formed in a manner of being closely attached to the inner circumferential surfaces of the second tube and the third tube; And
A plurality of auxiliary vanes extending in the left-right direction from the lower portion of the body and closely contacting the inner circumferential surfaces of the second tube and the third tube;
Wherein the gas fryer comprises: delete delete delete delete

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