JP2009172237A - Fryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fryer that prevents a burn caused by the fact that equipment or part of an oil tank (particularly the center of the front end) is intensively heated to a high temperature. <P>SOLUTION: The fryer includes an oil tank 2 and a combustion chamber 3 arranged in the equipment 1, a heat exchanger 4 that exchanges heat between a flue gas G1 from the combustion chamber 3 and cooking oil for deep-frying of the oil tank 2, an exhaust cylinder 5 for discharging the flue gas G1. The combustion chamber 3 opens downward, and a ventilation gap 11a is provided to the upper end of the equipment 1. The ventilation gap 11a is used for discharging a rising gas G4 which is the mixture of rising air entering from the opening in the lower part of the equipment with a flue gas G2 flowing out forward from the lower part of the combustion chamber 3, and which flows upward in a space 10 in front of the combustion chamber 3 and in the rear side of the front panel 11 of the equipment 1 to be discharged to the front of the equipment 1. In front of the combustion chamber 3 and in the center in the horizontal direction of the space 10 on the back of the front panel 11 of the equipment 1, there is installed a baffle plate 6 that prevents the rising gas G4 flowing upward in the space 10 from flowing upward in the center in the horizontal direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fryer used for deep-fried food such as tempura and fried food.

  As shown in FIG. 8, the fryer is composed mainly of a container body 1, a heating unit accommodated in the container body 1, and an oil tank 2 (see, for example, Patent Document 1). The main body 1 is mainly composed of a front plate portion 11, a rear plate portion 12, and left and right side plate portions 13, and an oil tank 2 is provided at an upper end portion. The heating unit is composed mainly of a combustor 30 and a heat exchanger 4, and a combustor 30 having a burner is disposed in a combustion chamber 3 disposed at a front portion in the body 1. The The combustion chamber 3 is a space in the box 31 that opens downward, and the upper portion of the combustion chamber 3 communicates with the heat exchanger 4. The heat exchanger 4 is disposed in a space in which the frying oil in the oil tank 2 is stored, and heats the frying oil in the oil tank 2 with the high-temperature combustion exhaust gas G1 flowing in the heat exchanger 4. The combustion exhaust gas G1 that has flowed through the heat exchanger 4 is discharged to the atmosphere via the exhaust pipe 5.

  Most of the flue gas generated from the burner in the combustion chamber 3 flows through the heat exchanger 4 as indicated by an arrow G1 and contributes to heating of the frying oil, but a part of the combustion exhaust gas below the combustion chamber 3 as indicated by an arrow G2. The air G3 flows out to the front through the opening and is mixed with the air G3 that rises by being taken in from the lower opening of the container 1 by the combustion draft to become the rising gas, and the rear in the front plate part 11 of the container 1 ( A space on the front side of the combustion chamber 3 and on the rear side of the front plate portion 11 of the vessel 1 while raising the temperature by the radiant heat F from the front surface of the oil tank 2 and the front surface of the combustion chamber 3 located on the right side in FIG. 10 flows upward and is discharged from the ventilation gap 11 a formed at the upper end of the front plate 11 of the container 1 to the front of the container 1.

Here, since the fluid flowing through the flow path is easier to flow in the central portion of the flow path, the gas rising through the space 10 as indicated by the arrow G4 is shown in FIG. As the air G3 taken in from the lower opening of the combustion chamber is mixed with the combustion exhaust gas G2 flowing out from the lower opening of the combustion chamber 3, the temperature rises as the temperature rises due to the radiant heat F from the front of the oil tank 2 and the combustion chamber 3. There was a tendency to gather close to the central part, and the central part of the front plate part 11 and the front end part of the oil tank 2 were heated intensively, resulting in a high temperature, which could cause burns.
JP 2003-130339 A

  The present invention was invented in view of the above-described conventional problems, and the object of the present invention is that a part of the vessel and the oil tank (particularly the central portion of the front end) is intensively heated to a high temperature. It is an object of the present invention to provide a flyer that prevents burns.

  In order to solve the above problems, the invention according to claim 1 includes an oil tank 2 disposed at the upper end of the container 1 and a combustor 30 disposed at the front of the container 1. The combustion chamber 3, the heat exchanger 4 that exchanges heat with the frying oil in the oil tank 2 through which the high-temperature combustion exhaust gas generated in the combustion chamber 3 flows, and the combustion exhaust gas G 1 that flows through the heat exchanger 4 are removed from the body 1. And the combustion chamber 3 is opened downward so that secondary air can flow in, and is taken up from the lower opening of the vessel 1 by the combustion draft and rises. An ascending gas G4 formed by mixing a part of the combustion exhaust gas G2 flowing out from the downward opening of the combustion chamber 3 is on the front side of the combustion chamber 3 and on the rear side of the front plate portion 11 of the body 1. A ventilation gap 11 a for flowing upward through the space 10 and being discharged to the front of the vessel 1 is provided with a front plate portion 11 of the vessel 1. In the flyer formed at the upper end, the rising gas G4 flowing upward in the space 10 is in the left-right direction at the center in the left-right direction of the space 10 on the front side of the combustion chamber 3 and on the rear side of the front plate portion 11 of the body 1 The baffle plate 6 is provided to prevent the fluid from flowing above the central portion of the head.

  With such a configuration, the baffle plate 6 provided at the central portion in the left-right direction of the space 10 disperses most of the high-temperature rising gas G4 flowing upward in the space 10 in the left-right direction, and the front plate portion 11 and the central portion of the front end of the oil tank 2 can be prevented from being heated intensively.

  Further, the invention according to claim 2 is the invention according to claim 1, in which the radiant heat from the combustion chamber 3 is transferred to the front plate of the combustion chamber 3 in the space 10 on the front side of the combustion chamber 3 and on the rear side of the front plate portion 11 of the body 1. The heat shield plate 7 is provided to prevent reaching the portion 11, and the baffle plate 6 is provided on the heat shield plate 7.

  With such a configuration, it is possible to prevent the temperature of the front plate portion 11 from being heated by the radiant heat F from the front surfaces of the combustion chamber 3 and the oil tank 2 and to increase the temperature of the front plate by the high temperature rising gas G4. It can prevent that the center part of the front-end part of the part 11 and the oil tank 2 is heated intensively, and becomes high temperature.

  Further, the invention according to claim 3 is characterized in that, in the invention according to claim 2, the heat shield plate 7 is inclined so as to be positioned forward as it goes upward.

  By adopting such a configuration, the high temperature rising gas G4 flowing through the space 10 can be rectified and efficiently discharged, and the residence time of the high temperature rising gas G4 can be shortened to shorten the body 1 and the oil tank. 2 can be suppressed.

  In the present invention, the baffle plate disperses most of the high-temperature rising gas flowing upward in the space on the front side of the combustion chamber and on the rear side of the front plate part of the vessel body in the left-right direction, so that the center part in the left-right direction The amount of water flowing upward can be reduced, the central part of the front end of the container and the oil tank can be prevented from being heated intensively, and it can be prevented from being burned. it can.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 is an overall perspective view of the fryer, FIG. 2 is a side sectional view cut along a plane passing through a combustion chamber and a heat exchanger, FIG. 3 is a plan view of the fryer, and FIG. 4 is a front view of the fryer. The figure is shown.

  As shown in FIGS. 1 and 2, the fryer in the present embodiment is a gas heating type, and is a heating unit comprising a body 1 as a fryer body, a combustion chamber 3 provided with a combustor 30, and a heat exchanger 4. And the oil tank 2 constitutes a main body. The body 1 that is a fryer body is a substantially rectangular outer shell composed mainly of a front plate portion 11, a rear plate portion 12, and left and right side plate portions 13, and is an example of dimensions. In the present embodiment, the left-right width is 300 to 400 mm, the depth is 500 to 700 mm, and the height is 600 to 900 mm. An oil tank 2 is provided at the opening at the upper end of the container body 1 and is closed, and the lower opening is not particularly closed to take out waste oil from the oil tank 2. Although the flange part 21 of the oil tank 2 which becomes concave toward the upper part is attached and fixed to the left and right side plate parts 13 and the rear plate part 12 of the container body 1, the front plate part 11 of the container body 1 is fixed. A ventilation gap 11 a is formed between the upper end portion of the airframe and the front end portion of the flange portion 21 of the fryer so as to communicate the space 10 in front of the vessel body 1 and the inside of the vessel body 1. In the oil tank 2 installed in this way, fried oil such as edible oil can be stored. An oil drain valve 22 is provided below the bottom of the oil tank 2, an oil receiver (not shown) is disposed below the oil tank 2, and the oil in the oil tank 2 is discharged by opening the oil drain valve 22. Can be done. A back guard 14 erected above the upper end of the rear plate 12 of the container 1 and the rear end of the oil tank 2 is provided upright at the rear of the container 1. The back guard 14 has a substantially rectangular tube shape projecting upward across the entire width in the left-right direction of the rear end portion of the container body 1. In this embodiment, the height from the floor of the upper end portion is 1000 to 1200 mm. An exhaust pipe 5 (described later) is inserted inside.

  As shown in FIG. 2, the main unit of the heating unit is composed of the combustor 30 and the heat exchanger 4. The combustor 30 includes a burner that mixes and burns fuel gas such as city gas and LP gas and air in the combustion chamber 3 and is connected to the burner and is led out through the side plate portion 13. The fuel gas is supplied by 32. The combustion chamber 3 is a space inside a box 31 having a substantially box shape that opens downward so that secondary air can flow in. The combustion chamber 3 is disposed at the front of the vessel 1 and is located above the combustion chamber 3. Is in communication with the heat exchanger 4. The heat exchanger 4 is arranged so as to cross the space where the frying oil in the oil tank 2 is stored, and when the high-temperature combustion exhaust gas G1 generated by combustion of the burner passes through the heat exchanger 4, the heat exchanger 4 enters the oil tank 2. Heat exchange is performed between the stored frying oil and the frying oil is heated. The flow path 41 in the heat exchanger 4 communicates with the combustion chamber 3 at the front end portion serving as the upstream end portion, and communicates with the space within the exhaust pipe 5 at the rear end portion serving as the downstream end portion. Yes. The exhaust tube 5 has a substantially rectangular tube shape with the vertical direction disposed in the back guard 14 as a longitudinal direction and a long side to the left and right, and the flow path in the exhaust tube 5 is a lower end serving as an upstream end. While communicating with the rear end portion of the heat exchanger 4 in the section, the upper end portion serving as the downstream end portion is open. Further, an opening is formed in the upper end portion of the back guard 14, and the combustion exhaust gas G <b> 1 discharged from the upper end portion of the exhaust pipe 5 is discharged to the atmosphere above the back guard 14. Further, a heat insulating material 23 is provided in front of the oil tank 2 and the combustion chamber 3 to suppress the radiation heat F from being radiated from the oil tank 2 and the combustion chamber 3 toward the front front plate portion 11.

  Most of the flue gas generated by the combustion of the burner in the combustion chamber 3 is exhausted through the heat exchanger 4 and the exhaust pipe 5 as in G1 above, but a part of the exhaust gas is opened downward in the combustion chamber 3. The gas flows out to the front of the combustion chamber 3 through the combustion draft, and is mixed with the air G3 that rises by being taken in from the lower opening of the container 1 to become the rising gas G4. While raising the temperature by the radiant heat F from the front surface, it flows upward in the space 10 on the front side of the combustion chamber 3 and on the rear side of the front plate portion 11 of the body 1, and the upper end portion of the front plate portion 11 of the body 1. It is discharged out of the front vessel 1 from the ventilation gap 11a formed at the front. Then, the high temperature rising gas G4 flowing upward in the space 10 on the front side of the combustion chamber 3 and on the rear side of the front plate portion 11 of the container body 1 flows so as to gather toward the upper portion of the central portion in the left-right direction. In order to prevent this, a baffle plate 6 that prevents the combustion exhaust gas flowing upward in the space 10 from flowing upward in the central portion is provided in the central portion in the left-right direction of the space 10. In the present embodiment, the baffle plate 6 is attached to the back surface of the front plate portion 11 by spot welding or the like so that the baffle plate 6 protrudes rearward from the back surface of the front plate portion 11. .

  As a result, as shown in FIG. 4, the high-temperature rising gas G4 flowing upward in the space 10 gathers toward the central portion, but is mostly due to the baffle plate 6 provided in the central portion of the space 10. The amount that is distributed in the left-right direction, flows upward in the central portion in the left-right direction, and is discharged from the central portion of the ventilation gap 11a can be reduced. As a result, it is possible to prevent the front plate portion 11 and the central portion of the front end portion of the oil tank 2 from being heated intensively, and to prevent burns.

  Next, another embodiment will be described with reference to FIGS. Since this embodiment is mostly the same as the above embodiment shown in FIGS. 1 to 4, the same portions are denoted by the same reference numerals, description thereof is omitted, and different portions are mainly described.

  In this embodiment, the shield 10 prevents the radiant heat F from the combustion chamber 3 from reaching the front plate portion 11 in the space 10 on the front side of the combustion chamber 3 and on the rear side of the front plate portion 11 of the body 1 described above. The heat plate 7 is provided, and the baffle plate 6 is provided on the heat shield plate 7.

  The heat shield plate 7 is attached to the back surface of the front plate portion 11. As an example of the dimensions, in this embodiment, the left and right width is slightly smaller than the left and right width of the front plate portion 11, and the vertical length is about 300 mm. However, it is not particularly limited. In addition, a notch 7a is formed in the lower right in front view. This is for forming a transmission part for confirming the internal combustion state and the like from the front. Similar notches and openings are formed in the part 11 and the box 31 of the combustion chamber 3, and glass or the like is provided as appropriate.

  A baffle plate 6 is provided on the back side of the heat shield plate 7. The baffle plate 6 includes a mounting vertical piece 61 attached to the rear surface of the front plate portion 11 and a side surface including a protruding horizontal piece 62 protruding rearward from the upper end or lower end (upper end in the present embodiment) of the mounting vertical piece 61. It has a substantially L-shape and is attached to the center of the rear surface of the heat shield 7 in the left-right direction by spot welding or the like. As an example of the dimensions, the horizontal width is about 90 to 100 mm, the vertical length (the vertical dimension of the mounting vertical piece 61) is 10 to 20 mm, and the front and rear width (the protruding dimension of the protruding horizontal piece 62) is about 5 to 10 mm. There is no particular limitation.

  A mounting piece 71 is provided on the front side of the heat shield plate 7. The mounting piece 71 protrudes forward from the left and right end portions on the front side of the heat shield plate 7, and the front end surface is 10 to 20 ° lower than the heat shield plate 7 at the lower end side than the upper end side. Although it inclines so that it may leave | separate from 7 and it is 12.3 degrees in this embodiment, it is not specifically limited. The heat shield plate 7 is fixed to the front plate portion 11 by attaching the front end surface of the attachment piece 71 to the back surface of the front plate portion 11 by spot welding or the like. The fixed heat shield plate 7 is inclined by 10 to 20 ° (12.3 ° in the present embodiment) so as to be located on the front side as it goes upward. Combustion exhaust gas G2 flowing out from the opening forward is mixed with air G3 rising from the lower side of the vessel 1 to become a rising gas G4, and upward while raising the temperature by the radiant heat F from the oil tank 2 and the front surface of the combustion chamber 3. It moves forward as it flows, and is along the flow path from the upper end of the front plate portion 11 until it is discharged from the ventilation gap 11a, and also has a function as a current plate. Furthermore, a heat insulating material may be provided on the front side of the heat shield plate 7.

  In the present embodiment, the heat shield plate 7 is provided in the space 10 on the front side of the combustion chamber 3 and on the rear side of the front plate portion 11, so that the radiant heat F from the front surfaces of the combustion chamber 3 and the oil tank 2 is generated. Can be prevented, and the temperature rise of the front plate portion 11 can be suppressed. Further, most of the flue gas generated in the combustion chamber 3 flows as indicated by an arrow G 1, but a part of the flue gas flows out of the combustion chamber 3 through the opening downward to the front of the combustion chamber 3. Mixing with the air G3 rising from below, it becomes the rising gas G4, flowing upward through the space 10 while raising the temperature by the radiant heat F from the front surface of the oil tank 2 and the combustion chamber 3, and from the ventilation gap 11a to the front Discharged. Most of the high-temperature rising gas G4 flowing upward in the space 10 flows on the rear side of the heat shield plate 7, and a part flows on the front side as indicated by an arrow G3. The part of the high temperature rising gas G4 is dispersed in the left-right direction by the baffle plate 6 provided at the center in the left-right direction on the back surface of the heat shield plate 7. Thereby, like the above embodiment, it is possible to suppress the amount discharged from the central portion of the ventilation gap 11a by flowing upward in the central portion in the left-right direction, and the central portion of the front plate portion 11 and the front end portion of the oil tank 2 Can be prevented from being heated to a high temperature and burned.

  Further, by inclining the heat shield plate 7, the high temperature rising gas G4 flowing through the space 10 can be rectified and discharged efficiently, and the residence time of the high temperature rising gas G4 can be shortened to reduce the body. 1 and the temperature rise of the oil tank 2 can be suppressed.

  Below, the experiment which verifies the effect of this embodiment is demonstrated.

  As this example, the same configuration as that of the above-described embodiment, as Comparative Example 1, without the baffle plate 6 and the heat shield plate 7 as in the past, and as Comparative Example 2, the heat shield plate 7 is the space 10. Measure the temperature in the use state for each of those that are provided perpendicularly and without the baffle plate 6 and for the comparative example 3 that has the heat shield plate 7 inclined as described above and does not have the baffle plate 6. did. The temperature measurement part consists of the left end (point A in FIG. 1), the center (point B), the right end (point C), and the oil tank 2 from the flange 21 on the front side of the oil tank 2. Measurements were made on the left end (point D in FIG. 1), the center (point E), and the right end (point F) toward the flange 21 on the front side. The measurement results are shown in Table 1 (unit: ° C).

  It can be seen that the present example has suppressed the temperature well compared with others, and the effect has been demonstrated.

1 is an overall perspective view of a fryer according to an embodiment of the present invention. It is the sectional side view cut | disconnected by the surface which passes along the combustion chamber and heat exchanger of a fryer same as the above. It is a top view same as the above. It is a front view same as the above. It is the sectional side view cut | disconnected by the surface which passes along the combustion chamber and heat exchanger of the flyer of other embodiment. It is a front view same as the above. The heat shield plate provided with the same baffle plate is shown, (a) is a front view, (b) is a side view, and (c) is a rear view. It is a sectional side view of the conventional fryer. It is a front view of the conventional flyer same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 10 Space 11 Front plate part 11a Ventilation gap 12 Rear plate part 13 Side plate part 14 Back guard 2 Oil tank 21 Flange part 3 Combustion chamber 30 Combustor 4 Heat exchanger 41 Flow path 5 Exhaust cylinder 6 Baffle plate 7 Heat shield plate

Claims (3)

  An oil tank disposed at the upper end of the container, a combustion chamber having a combustor disposed at the front of the container, and high-temperature combustion exhaust gas generated in the combustion chamber flowing through the interior of the oil tank; A heat exchanger that performs heat exchange, and an exhaust pipe that discharges combustion exhaust gas flowing through the heat exchanger to the outside of the body, and the combustion chamber opens downward so that secondary air can flow in, and a combustion draft Ascending gas formed by mixing the air taken up from the lower opening of the container and the part of the flue gas flowing out from the lower opening of the combustion chamber forward is on the front side of the combustion chamber and A fryer in which a ventilation gap is formed in the upper end portion of the front plate portion of the container body so as to flow upward in the space behind the front plate portion of the container body and be discharged to the front of the container body. Flows upward through the space at the center in the left-right direction of the space behind the front plate of the container Flyer, characterized by comprising providing a baffle to prevent a temperature gases flow above the lateral center part.   A heat shield that prevents the radiant heat from the combustion chamber from reaching the front plate is provided in the space on the front side of the combustion chamber and on the rear side of the front plate of the vessel, and a baffle plate is provided on the heat shield. The flyer according to claim 1, wherein:   The fryer according to claim 2, wherein the heat shield plate is inclined so as to be positioned on the front side as it goes upward.

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