JP3094527U - Fryer - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve the thermal efficiency of an intermediate heating type fryer.
Also, the exhaust gas temperature is lowered. SOLUTION: An infrared burner using a ceramic is used as a gas burner for heating an oil layer of a fryer, and the combustion gas is passed through a heating pipe in a fry tank.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  In the present invention, water and oil are added, and an oil layer is formed on the water layer due to the difference in specific gravity between them. A heating pipe that is formed and heats this oil layer by the heat of combustion gas and this heating pipe And a cooling pipe installed below the heating pipe to cool the oil layer below the heating pipe. An intermediate heating type fryer with a frying tank placed in the lower water layer. Regarding

[0002]

[Prior art]

  Due to the difference in specific gravity between water and oil as described above, a lower water layer and an upper oil layer are formed. For example, Japanese Patent Publication No. 55-40249 discloses a fryer that heats an oil layer for frying. (Publication 1), Japanese Patent Laid-Open No. 11-299659 (Publication 2), etc. Has been.

[0003]   The fryer disclosed in the known document 2 will be described with reference to FIG.

[0004]   FIG. 6 is a schematic vertical sectional view of the fryer shown in the known document 2. Is equipped with a deep-fried food tank 10 opened upward. This frying tank 10 has A heating pad that penetrates watertightly from the front wall to the rear wall, slightly above the middle part in the vertical direction. The pipe 14 is placed almost horizontally, and the heating pad is located slightly below the middle part. A cooling pipe 16 penetrating below the ip 14 from the front wall to the rear wall of the frying tank 10 in a watertight manner. Are arranged almost horizontally. Each of the heating pipe 14 and the cooling pipe 16 The number of cans can be freely set according to the capacity of the deep-frying tank 10 and the operating temperature of oil. In the example of Document 2, three heating pipes 14 and two cooling pipes 16 are used.

[0005]   The frying tank 10 contains a predetermined amount of oil and water for frying, respectively. Is a water layer WL below the frying tank 10 and an oil layer O above the water layer WL due to the difference in specific gravity between them. Form L. The interface SIF between the water layer WL and the oil layer OL is below the cooling pipe 16. Is set to a predetermined height.

[0006]   A gas bar is provided as a heating means at a position facing each inlet opening of the heating pipe 14. And a gas burner 24 is provided for each of the three heating pipes 14. Has been.

[0007]   In this fryer, the oil layer in the frying tank is heated by a heating pipe and heated to a predetermined temperature. At the same time, the cooling fluid is passed through the cooling pipe to cool the oil layer below. Therefore, the temperature of the water layer WL in the deep-frying tank rises while adjusting the heating of the oil layer. And prevent the fried slag that has settled from the portion of the oil layer to precipitate in the aqueous layer. Also, The frying tank 10 has a water level detecting means for detecting the height of the interface between the water layer WL and the oil layer OL. Is provided, when the water layer rises, it is output to that effect and the oil layer A temperature control mechanism is provided to stop heating and prevent water heating and oil scattering.

[0008]   In the drawings, reference numeral 18 is a drainage pipe for operating the drainage valve 18a. Drainage can be done. Further, reference numeral 20 is an oil drain pipe, and the oil drain valve 2 Oil can be removed by operating 0a. Reference numeral 25 indicates a gas pipe Reference numeral 26 and a gas on-off valve, and 28 indicate a manual type stopcock. Also, 56 is a control box, 12a Is an operation panel, 12 is a support frame, and 36 is an exhaust conduit.

[0009]

[Problems to be solved by the device]

  In the fryer disclosed in this known document 2, a Bunsen type gas bar is used as a gas burner. Gas burner 24 is arranged for each of the three heating pipes. there were. That is, as shown in FIG. 7, a gas burner is installed for every three heating pipes. In each case, the combustion gas was introduced into the heating pipe 14.

[0010]   The Bunsen gas burner uses the gas blown from the nozzle in the combustion section 24a. This is a method of mixing air and gas for combustion, but the combustion process is performed in the heating pipe 14. But continue, in the middle of the heating pipe 14, for example 30 to 40c from the combustion chamber 24a Since the temperature becomes the highest at m, even if the combustion gas is still hot enough, the exhaust port There is a problem that less heat is used in the oil layer and more heat is exhausted. It was Also, the Bunsen burner requires a pilot burner for ignition. , The pilot burner is always ignited while using the fryer, which improves thermal efficiency. There was no problem. Also, for each heating pipe, for example, 7,000 kcal Since a Bunsen type burner that generates heat is installed, the heat efficiency of the entire fryer is poor. Consumed a lot of fuel. In addition, the temperature of the exhaust gas is high, and the temperature may exceed 500 degrees. Therefore, safety measures were necessary for the exhaust system.

[0011]   The present invention has been made based on the above background, and can achieve high thermal efficiency. The purpose is to provide a frying device. Also, the exhaust temperature is low, and the safety of the exhaust mechanism An object of the present invention is to provide a fryer having a simple prevention mechanism. In addition, the pilot High efficiency and high fuel efficiency (fuel efficiency) The purpose is to provide a fryer.

[0012]

[Means for Solving the Problems]

  In the present invention, as a gas burner as a heating means, it emits infrared rays when heated. A burner using a ceramic that is used inside the combustion chamber is used. This ceramic burns The chamber is arranged in a honeycomb structure and emits infrared rays when heated and emits gas and primary air. Completely burns the air-fuel mixture and outputs it to the heating pipe. Ceramic is, for example, alumina Etc., and is equivalent to those used in gas stoves, cookers, etc. Book In the gas burner of the invented fryer, a honeycomb structure ceramic structure is installed in the combustion chamber. Place it so that it burns completely in the combustion chamber. The gas burner also has a primary A blower for sending air is installed to send the primary air required for complete combustion of gas in the combustion chamber. Try to slip in.

[0013]   As a result, completely burned hot air flows from the combustion chamber to the heating pipe. For this reason By arranging one heating pipe through the frying tank, the heating pie longer than before Can be used to efficiently transfer the heat of combustion gas to the oil layer, The rate can be improved. In addition, the gas burner burns completely and the heating pie Since the combustion process does not continue inside the pump, the heat generated is efficiently transferred to the oil layer. To be done. Also, the temperature of the hot air at the stage of being discharged from the heating pipe should be 200 degrees or less. The exhaust mechanism does not require any special mechanism. Also, it is fried The manufacturing cost of the container can be reduced. It also improves thermal efficiency, reducing gas consumption. It is possible to reduce the fuel consumption of the fryer and reduce the operation cost. Also, The heat pipe has an elliptical cross section with a major axis in the vertical direction, and has a metal heat conduction plate inside. By disposing them, it is possible to further effectively utilize the heat.

[0014]   That is, according to the present invention, water and oil are put in and an oil layer is formed on the water layer due to the difference in specific gravity between them. A frying tank to be formed, a gas burner, and the gas burner provided in the frying tank. Heating pipe for heating the oil layer with the combustion gas from the above, and the heating pipe in the frying tank. A cooling pipe provided below the heating pipe to cool the portion of the oil tank below the heating pipe; , The interface between the oil layer and the water layer is detected, and when the water layer reaches a predetermined height, the gas burner In a fryer equipped with heating control means for stopping heating of the oil layer by the gas, A burner is a burner in which a ceramic that emits infrared rays when heated is installed in the combustion chamber. Is characterized in that.

[0015]   In the gas burner, a honeycomb structure ceramic is arranged in the combustion chamber. Be good.

[0016]   Further, the gas burner may include a blower that sends air to the combustion chamber. It In addition, one heating pipe can be placed almost horizontally at the oil layer position in the frying tank. , The heating pipe has an elliptical cross-section with the major axis arranged in the up-down direction to improve heat conduction. It is preferable that a metal heat conduction plate for fixing is arranged inside.

[0017]   Further, it is preferable that a plurality of cooling pipes be arranged in the deep-fried food tank.

[0018]

[Embodiment of device]

  An embodiment of the present invention will be described below with reference to the drawings.

[0019]   FIG. 1 is a schematic vertical view for schematically explaining a heating structure of a frying tank of a fryer according to an embodiment of the present invention. It is a figure which shows the arrangement figure seen from the upper surface of a cross-sectional view and a gas burner and a heating pipe. Also 2 shows a cross-sectional view of the deep-frying tank.

[0020]   In other words, the frying tank 12 is filled with water and oil, and due to the difference in specific gravity between them, The water layer WL and the oil layer OL are formed on the upper side, and the upper part of the oil layer OL is heated. The pipe 14 is arranged and is located below the oil layer OL and near the water layer WL. 16 are arranged. In addition, the position of the interface SIF between water and oil is located in the deep-frying tank 10. Water level detection means for detecting the temperature is provided, and heating is controlled by the position of the interface SIF. A heating control means for performing the above is provided. The structure of the vertical section of this deep-fried food tank 10 is shown in FIG. The structure of the frying tank 10 shown is substantially the same.

[0021]   Here, the feature of this embodiment is that the gas burner 24 is installed in the combustion chamber 24a. An infrared burner with a ceramic that emits infrared light when heated The heating pipe 14 for guiding the hot air discharged from the combustion chamber 24a is shown in FIG. ), One heating pipe from the combustion chamber 24a is placed in the frying tank. The same heating pipe is bent horizontally and placed, and is guided to the exhaust port. It is arranged as follows. The gas burner shown in the conventional example of FIG. Although it was a formula burner, in the present embodiment, an infrared burner using a ceramic is used, The oil layer OL is heated by one heating pipe 14.

[0022]   FIG. 3 is a schematic diagram for explaining the infrared burner used in this embodiment, and FIG. FIG. 4 is a diagram schematically illustrating a cross section inside a combustion chamber. That is, the infrared rays of this embodiment The burner is a honeycomb with holes formed like a mesh in the direction of gas flow inside the combustion chamber. The ceramic structure of the aluminum structure is arranged, and this ceramic structure is It has a hole in the shape of a honeycomb (honeycomb), and the mixture of gas and air passing through it burns. When heated, it radiates infrared rays when heated, further increasing the mixture of gas and air. It is heated and allowed to burn completely while passing through the ceramic structure.

[0023]   As a ceramic used for such an infrared burner, for example, alumina is used. However, since the ceramic materials used for gas burners are well known, Is omitted. Also, fine circular and square holes are provided in a mesh shape. The honeycomb shape is also used.

[0024]   Further, as shown in FIG. 3, the infrared burner of this embodiment blows primary air. Including the blower 24b. The conventional Bunsen burner blows out from the burner nozzle. Although it is a system that takes in primary air with the gas, the infrared burner of this embodiment Because the gas and the primary air are completely combusted in the combustion chamber 24a, the primary air is blown by the blower. It is configured to send air to the combustion chamber. It should be noted that sufficient primary air can be obtained without this blower. Blowers may not be needed if the burner accepts the. Also infrared The line burner does not require a pilot burner because it is a direct ignition type.

[0025]   Next, FIG. 5 shows a cross-sectional structure of the heating pipe 14. The heating pipe 14 is made of stainless steel. It is made of stainless steel and its cross section is elliptical to improve the thermal conductivity to the oil layer. In addition, the long diameter direction is arranged in the vertical direction of the deep-fried food tank. Also a heating pie A stainless steel heat transfer plate with a corrugated cross-section is installed inside the chamber to keep the heat of the combustion air. It is configured to transfer to the wall surface of the heating pipe.

[0026]   In this way, the hot air from the infrared burner 24 flows through the heating pipe 14 to heat the oil. However, the exhaust gas is guided to the exhaust port. At the exhaust port, cooling that flows out of the cooling pipe 16 It is mixed with outside air, the temperature is further lowered, and the air is exhausted from the exhaust port. others Therefore, the exhaust temperature is lower than in the conventional example. The temperature at the stage of coming out of the heating pipe 14 is It becomes almost 200 degrees or less.

[0027]   Note that the control to ignite and extinguish these infrared burners and adjust the oil temperature is It is controlled by the temperature control mechanism based on the output of the sensor and the water level detection sensor. However, this control mechanism is the same as the conventional one.

[0028]

[Effect of device]

  As described above, in the present invention, the infrared burner using ceramic is used. As a result, the heating gas flowing in the heating pipes placed in the frying tank is in a completely combusted state. Therefore, the thermal efficiency of conduction to oil is improved, and the heating gas at the stage of being discharged It is possible to lower the temperature of the conventional method. In addition, an oil layer is added with one heating pipe. Since it can generate heat, it is not necessary to use a burner for each heating pipe as in the past, Combustion gas can be effectively used for heating oil, improving thermal efficiency . Moreover, since only one burner is required, the manufacturing cost of the fryer can be reduced. It Furthermore, because the thermal efficiency can be improved, the fuel consumption can be reduced, The operation cost can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration example of a deep-fried food tank according to an embodiment of the present invention.

FIG. 2 is a diagram showing the configuration of a cross section of a frying tank according to an embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a gas burner according to an embodiment of the present invention.

FIG. 4 is a schematic view showing a cross section of a combustion chamber.

FIG. 5 is a view showing a cross section of a heating pipe.

FIG. 6 is a view showing a schematic vertical section of a conventional fryer.

FIG. 7 is a view showing an arrangement of a conventional gas burner and a heating pipe.

[Simple explanation of symbols]

10 deep-fried food tank 12 Support frame 14 heating pipe 16 cooling pipes 24 gas burner 24a combustion chamber 24b blower

Claims (6)

[Scope of utility model registration request] 1. A frying tank in which water and oil are added and an oil layer is formed on the water layer due to a difference in specific gravity between them, a gas burner, and the oil layer is provided in the frying tank to heat the oil layer by combustion gas from the gas burner. A heating pipe for cooling, a cooling pipe provided below the heating pipe in the deep-frying tank for cooling the portion of the oil tank below the heating pipe, and an interface between the oil layer and the water layer is detected, and the water layer is predetermined. And a heating control means for stopping the heating of the oil layer by the gas burner when reaching the height of the gas burner, wherein the gas burner is a burner in which a ceramic that emits infrared rays when heated is provided in the combustion chamber. And a fryer. 2. The fryer according to claim 1, wherein the gas burner has a honeycomb structure ceramic arranged in a combustion chamber. 3. The fryer according to claim 1, wherein the gas burner includes a blower that sends air to the combustion chamber. 4. The fryer according to claim 2, wherein one heating pipe is arranged substantially horizontally at an oil layer position in the frying tank. 5. The heating pipe according to claim 2, wherein the heating pipe has an elliptical cross-section with a major axis arranged in the up-down direction, and a metal heat conduction plate for increasing heat conduction is arranged inside. Frying machine. 6. The fryer according to claim 4, wherein a plurality of cooling pipes are arranged in the frying tank.