JP2018042902A - Fryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fryer that prevents exhaust from an exhaust duct standing up on a back side of a fryer from being influenced by a wind blown from around and prevents a combustion failure and back fire from occurring.SOLUTION: In a fryer 10 for heating an oil tank with a gas burner, a windproof plate 50 for preventing a wind blown from the outside is disposed forward of a top duct 34 provided in an exhaust duct 30 while being separated apart from the top duct 34 by a required distance α.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fryer that heats cooking oil and frying the food to be cooked. In particular, the exhaust from the exhaust duct that is raised behind the fryer is prevented from being affected by the wind blowing from the surroundings, and the combustion is poor. There is something that prevents the flashback.

  The fryer for frying the food to be cooked (hereinafter also referred to as food) has an oil tank in which cooking oil (hereinafter also referred to as oil) is stored in the fryer body, and heated air heated by a heating device disposed in the fryer body Is circulated through an exhaust passage defined outside the oil tank, so that cooking oil in the oil tank is heated. In addition, although there exists an electric heater arrange | positioned in an oil tank as a heating apparatus, this invention is limited to the case where a gas burner is used. Therefore, the basic structure of a fryer in which a gas burner is disposed in the combustion chamber as a heating device will be described first.

  The fryer 10 to which the present invention is applied includes a box-shaped oil tank 12 in which cooking oil is stored, a fryer body 14 in which the oil tank 12 is accommodated, and combustion in the fryer body, as shown in FIGS. A gas burner 18 disposed in the chamber 16 and an exhaust passage 20 through which heated air (combustion gas) heated by the gas burner 18 circulates on the outer periphery of the oil tank 12 are provided.

  As shown in FIG. 14, the fryer main body 14 is formed in a box shape that opens upward from the bottom portion 22 and the four side walls 24, and the oil tank 12 is accommodated inside the fryer main body 14. As shown in FIG. 14, an inner box 26 that surrounds the oil tank 12 accommodated in the fryer body 14 while keeping a certain space is disposed inside the fryer body 14. The inner box 26 is formed in a box shape from a bottom part 26 a located below the bottom part 12 a of the oil tank 12 and four side parts 26 b, and the upper opening of the inner box 26 is closed by the oil tank 12. Yes.

  As can be seen from FIGS. 13 and 14, a space surrounding the oil tank 12 is formed between the outer surface of the oil tank 12 and the inner surface of the inner box 26. In FIG. 14, the space on the front side of the fryer 10 becomes the combustion chamber 16, and the space on both sides surrounding the oil tank 12 and the space on the rear side become the exhaust passage 20. As shown in FIG. 14, an opening 28 communicating with the exhaust passage 20 is opened on the back surface of the inner box 26, and the opening 28 is erected on the rear side of the flyer body 14. It communicates with the exhaust duct 30. Accordingly, when the gas burner 18 is ignited in the combustion chamber 16, the high-temperature combustion gas directly heats the oil tank 12 facing the combustion chamber 16 and passes through the exhaust passage 20 in the process of the oil tank 12. Heat exchange is performed with a large number of fins 32 arranged on the outer wall surface, and the oil tank 12 is also heated from the side and rear. The combustion gas that has passed through the exhaust passage 20 ascends the exhaust duct 30 through the opening 28 and is discharged to the outside through a top duct 34 that covers the upper opening 30 a of the exhaust duct 30. Since the exhaust duct 30 provides a draft effect, when the gas burner 18 is ignited, air is actively supplied to the combustion gas and exhaust of the combustion gas from the exhaust passage 20 is promoted. As shown in FIG. 14, an inclined deflecting plate 36 that deflects the discharge direction of the exhaust gas discharged from the top duct 34 obliquely forward is provided behind the top duct 34. The rear side wall 24 of the fryer main body 14 rises vertically upward along the exhaust duct 30 and is bent above the deflection plate 36 to form a flange 38.

  As shown in FIGS. 13 and 14, an oil drain pipe 40 for discharging cooking oil is disposed at the bottom 12 a of the oil tank 12. In addition, a front panel 42 is provided on the front surface of the flyer main body 14, and various operation panels and lamps are arranged on the front panel 42, and an electrical box (not shown) is arranged on the back side. Yes. As shown in FIG. 14, the oil tank 12 is divided into a deep first oil tank 12b and a shallow second oil tank 12c, and the bottom net prevents the cooked product from sinking into the bottom of the oil tank in the first oil tank 12b. 44 is arranged. 13 and 14, L indicates a cooking oil storage line in the oil tank 12.

Japanese Utility Model Publication No. 7-24235

  FIG. 1 is a top side view of the fryer 10 shown in FIG. 12. In the fryer main body 14, the exhaust duct 30 is accommodated in a front casing 46 standing behind the oil tank 12. The top duct 34 protrudes slightly upward. Therefore, when the gas burner 18 is ignited in the combustion chamber 16, as described above, the combustion gas passes through the exhaust passage 20 to heat cooking oil in the oil tank 12, and the exhaust duct from the opening 28 shown in FIG. Enters 30 and rises. Then, after being discharged through the top duct 34 shown in FIG. 1, the blowing direction is deflected obliquely forward by the upper deflection plate 36. In addition, the drain pan 48 for cutting off the oil of the deep-fried food to be cooked is detachably attached to the center of the front casing 46.

  By the way, various places are assumed in the installation environment of the fryer 10, and there are not only an indoor kitchen but also a half-outdoor cooking place or an open kitchen that is completely open. If it is a semi-outdoor or a complete outdoor, wind may blow on the top duct 34 of the exhaust duct 30 to disturb the exhaust depending on the weather conditions at that time. Further, even in an indoor kitchen, an artificial wind from a spot cooler or a fan may be blown to the top duct 34. For example, when wind blows on the front surface of the top duct 34, depending on the strength of the wind, the exhaust from the top duct 34 may be pushed back into the interior, resulting in poor combustion of the gas burner 18. Furthermore, the combustion speed becomes faster than the speed at which the gas is ejected from the gas burner 18, or conversely, the gas ejection speed becomes slower, causing a flashback phenomenon in which the flame returns to the burner nozzle, thereby reducing the carbon monoxide concentration. This causes a negative effect. Further, the wind blown to the top duct 34 does not always come from the front, but from above the top duct 34, from the left or right or any side, and from each direction. Sometimes sprayed together.

In order to solve the problem and achieve the intended object, the invention according to claim 1
A fryer body provided with an oil tank in which cooking oil is stored, a combustion chamber provided with a gas burner for heating the oil tank from the outside, and defined between the oil tank and an inner box and communicated with the combustion chamber, An exhaust passage through which the combustion gas of the gas burner heats the oil tank and is discharged to an exhaust opening, and is provided on the back surface of the fryer main body and extends upward, and communicates with the opening below. In a flyer consisting of an exhaust duct to be formed and a top duct disposed in an upper opening of the exhaust duct,
The gist is that a windshield plate is provided above the oil tank so as to face the front away from the top duct of the exhaust duct.
According to the first aspect of the present invention, the wind does not interfere with the exhaust of the fryer, and the oil or food from the oil tank does not enter the exhaust duct.

According to a second aspect of the present invention, the windshield plate includes a windshield surface and a folded curved surface bent below the windshield surface, and the folded curved surface is inclined so as to approach the top duct side with respect to the windshield surface. This is the gist.
According to the invention which concerns on Claim 2, since the folding surface of the windshield board was inclined, possibility that a scooping net will contact a windshield board during a frying operation will be reduced.

In the invention according to claim 3, a through hole is provided in the bent curved surface inclined downward of the windshield plate to guide the wind from above along the back side of the windshield plate to escape. It is a summary.
According to the third aspect of the present invention, it is possible to effectively prevent not only the wind blowing from the front but also the wind blowing from above.

According to a fourth aspect of the present invention, the windshield plate is configured as a box duct in which side plates are provided on both side edges of the windshield plate, and a rear plate is provided on a rear side edge of the both side plates. The gist is to be detachably mounted on the exhaust duct.
According to the invention which concerns on Claim 4, it can prevent effectively not only from the wind from a front surface but the wind which blows from a side, and can also use it for the outdoors use.

The gist of the invention described in claim 5 is that the box duct is combined and integrated with the top duct.
According to the invention which concerns on Claim 5, since the windshield plate and the top duct were able to be integrated, the number of parts can be decreased and cost can be reduced.

  According to a sixth aspect of the present invention, a duct cover is detachably provided so as to accommodate the top duct provided in the exhaust duct, and an opening for exhausting exhaust is provided on the upper surface of the duct cover. The gist.

The gist of the invention described in claim 7 is that the opening direction of the opening in the duct cover intersects with the opening direction of the opening formed in the top duct.
According to the invention which concerns on Claim 6 and Claim 7, since the exhaust port of combustion gas does not exist in the side directed to the oil tank of a fryer, an oil splash and a foodstuff do not penetrate | invade in a duct.

  According to the flyer of the present invention, when exhausting the combustion gas from the top duct provided above the exhaust duct, even if wind is blown from the front or upper side of the top duct or from the other side, Therefore, it is possible to effectively prevent adverse effects such as poor gas combustion and flashback in the gas burner, and further an increase in the concentration of carbon monoxide.

FIG. 13 is an upper side view of the fryer shown in FIG. 12, where (a) is a diagram illustrating an embodiment of the present invention and (b) is a perspective view of a windshield. It is a perspective view which shows the modification of the windshield which concerns on the Example of this invention shown in FIG. It is explanatory drawing which shows the state which attached the windshield shown in FIG. 2 to the top duct vicinity of a fryer. It is a principal part longitudinal cross-sectional view which shows the state which attached the windshield which took the countermeasure against the wind which blows on a top duct from the top to the fryer. (a) is a partial longitudinal cross-sectional view which expands and shows the attachment state of the windshield plate shown in FIG. 4, (b) is a front view of a windshield board. It is a perspective view of the box duct which gave the countermeasure from the wind from the front which blows on a top duct, and the wind from a side. It is a partially cutaway perspective view showing a modification in which the box duct and the top duct shown in FIG. 6 are integrated. (a) is a perspective view which shows the state just before covering a duct cover with respect to the top duct provided above the exhaust duct, (b) is a perspective view which shows the state which covered the duct cover on the top duct. (a) is a longitudinal cross-sectional view of a duct cover and a top duct shown in FIG. 8 (b), and (b) is an enlarged view of a circular portion shown in (a). (a) is a perspective view before setting a sliding board in the oil tank of a fryer, (b) is a top view at the time of setting a sliding board in an oil tank. (a) is a perspective view which shows an example of the sliding board shown in FIG. 10, (b) is a perspective view which shows another example of a sliding board. It is a perspective view which shows schematic structure of the fryer which uses a gas burner. It is the front view which cut the principal part of the fryer shown in FIG. 12 longitudinally in the center. It is the side view which cut the principal part of the fryer shown in FIG. 12 longitudinally in the center. It is a schematic sectional drawing of the fryer which restrained the height of the exhaust duct low.

  Next, the flyer according to the present invention will be described with reference to the accompanying drawings by way of preferred embodiments. As described with reference to FIG. 1, the combustion gas is exhausted from the top duct 34 mounted on the exhaust duct 30 of the fryer 10, and this exhaust is a spot cooler disposed in a kitchen or the like depending on where the fryer 10 is installed. It will be affected by the wind. Therefore, as shown in FIG. 1, assuming that wind is blown from the front as indicated by an arrow to the top duct 34 of the fryer 10, a windshield 50 is attached to the front surface of the top duct 34, so that the wind It is possible to prevent direct contact with the duct 34. As shown in FIG. 1 (b), the windshield 50 is formed, for example, by bending a stainless steel plate perpendicularly in one direction to a windshield surface 50a and bending the lower end in the opposite direction to form a lower bent portion 50b. ing. The width of the windshield 50 is set to be substantially equal to or slightly larger than the width of the top duct 34 provided in the exhaust duct 30 of the fryer 10 shown in FIG. As shown in FIG. 1A, the windshield 50 is stably attached by inserting the lower bent portion 50 b into the gap between the front casing 46 and the top duct 34. The distance α between the windshield 50 and the top duct 34 is preferably set sufficiently large so that the exhaust of combustion gas from the top duct 34 is not impaired by the windshield 50. In addition, by providing the windshield plate 50 in front of the top duct 34, it is possible to prevent the splashing of cooking oil or small foreign matters from the oil tank 12 from entering the inside through the opening 34a of the top duct 34. .

  As described above, the windshield plate 50 described above has a sectional angle of approximately 90 ° as shown in FIG. By the way, the worker crawls the food to be cooked in the oil tank 12 with a scooping net (not shown) and transfers it to the oil pan 48. In this case, there is an inconvenience that the scooping net comes into contact with the bent portion 50c serving as the bulge of the windshield 50 and drops the food to be cooked or the usability is poor. Therefore, as shown in FIGS. 2 and 3, it is recommended that the bending angle of the bent portion 50 c in the windshield 50 be a gentle obtuse angle. The angle of the bent portion 50c can be arbitrarily set as long as the above-described scooping net is used and the scooped net does not come into contact with the bent portion 50c and is easy to use. . That is, the windshield plate 50 includes a windshield surface 50a and a bent curved surface (inclined surface) 50d bent below the windshield surface 50d, and the folded curved surface 50d is inclined so as to approach the top duct 34 side with respect to the windshield surface 50a. I'm allowed.

  The windshield plate 50 shown in FIGS. 1 to 3 is an effective measure against wind blowing from the front onto the top duct 34. However, the installation environment of the fryer 10 is various, and it is not effective against the wind blowing from above on the top duct 34. Of course, in order to prevent wind from above, it is conceivable to provide a windbreak guard above the top duct 34. In this case, the combustion gas discharged from the top duct 34 (a sufficient amount of heat must be generated). However, it is considered that the danger flows directly to the worker by flowing under the windbreak guard and blowing forward. 4 and 5 show proposals for dealing with wind blowing from above. First, in order to prevent the wind blown from above the top duct 34, there are a method of blocking this wind and a method of letting the incoming wind escape downward. The means for providing the windbreak guard above the top duct 34 described above is based on the former method, but this has the above-mentioned disadvantages. Therefore, the present invention employs the latter method. That is, as shown in FIGS. 4 and 5 (a), basically, the windshield 50 having the form shown in FIG. 2 is used. Here, as shown in FIG. 5 (b), a large number of through holes 52 are aligned at a required interval on a bent curved surface 50d existing between the windshield 50a and the lower bent portion 50b in the windshield 50. To open. This through hole 52 may be a simple punch hole by punching, but as shown in the cross section of FIG. 5A, a punching tongue piece 54 partially connected to each through hole 52 is formed by half punching. It is preferable to extend downward. As described above, since a large number of the through holes 52 are formed in the bent curved surface 50d of the windshield 50, the wind blown from above the top duct 34 is applied to the windshield 50 as shown by arrows in FIG. It is guided downward by the back surface, and is guided to the through holes 52 and the punching tongue piece 54 as it is, and slips downward. Therefore, the windshield 50 can reduce the influence of not only the wind from the front but also the wind from above, and the flyer 10 that is strong against wind can be realized. Moreover, since the windshield 50 which prevents the wind from the front and upper direction was made from one member, cost can also be reduced.

  The windshield 50 shown in FIGS. 1 to 3 is a measure against wind blown from the front of the flyer 10, and the windshield 50 shown in FIGS. 4 and 5 is a measure against wind blown from above the flyer 10. there were. However, depending on the place where the fryer 10 is installed or the arrangement of the electric fan or the like, the fryer 10 may be blown from the left or right side of the fryer 10. FIG. 6 shows an effective preventive measure against wind blowing from the side against the top duct 34 of the fryer 10. That is, as shown in FIG. 6, the front, rear and both sides are surrounded by a heat-resistant plate made of stainless steel or the like to form a box-like box duct 56, and this box duct 56 is detachably attached to the exhaust duct 30. Is placed or covered. Thus, the box duct 56 is surrounded on all sides by a heat-resistant plate, and its upper and lower surfaces are completely open. Accordingly, when the box duct 56 is attached to the exhaust duct 30, the combustion gas discharged from the top duct 34 passes through the inside of the box duct 56 and is released to the outside. The windshield plate is configured as a box duct 56 in which side plates 56a and 56a are provided on both side edges of the windshield plate, and a rear plate 56b is provided on a rear side edge of the side plates 56a and 56a. Is detachably mounted on the exhaust duct 30. Thus, since both sides of the box duct 56 are surrounded by heat-resistant plates, the discharge of the combustion gas is not hindered by the wind blowing from the side of the fryer 10, and therefore the wind blows from all sides. It can be used safely outdoors.

  FIG. 7 shows a modification of the box duct 56 shown in FIG. 6, and the top duct 34 and the box duct 56 shown in FIGS. 12 and 14 are integrated. That is, the box duct 56 shown in FIG. 6 is attached to the exhaust duct 30, and the top duct 34 exists separately in the exhaust duct 30. However, the box duct 56 shown in FIG. 7 has a top duct 34 integrated therewithin. For this reason, according to the box duct 56 shown in FIG. 7, the influence from the wind from the front and the side can be prevented, and since it is integrated with the top duct 34, the number of parts is reduced, and maintenance and cleaning are performed. The complicated operation of separately removing the box duct 56 and the top duct 34 can be reduced.

  The top duct 34 shown in FIGS. 12 and 14 is a long angle member having a large number of through-holes formed on the upper surface thereof in a comb-like shape, and the top duct 34 is connected to the upper opening 30 a of the exhaust duct 30. It was supposed to be attached to. However, it is not essential that the top duct 34 has such a shape, and various types can be considered. For example, the flyer 10 shown in FIG. 15 is obtained by setting the height of the front casing 46 provided with the exhaust duct 30 for facing sales to be considerably low. That is, depending on the store that uses the fryer 10, there may be face-to-face sales in which the food to be cooked by the fryer 10 is handed over to the customer through the oil tank. In this case, the normal type fryer 10 having the tall exhaust duct 30 is obstructive, and therefore, the type of the front casing 46 having a short height is required. However, if the front casing 46 is lowered, the top duct 34 attached to the internal exhaust duct 30 will be close to the frying area in the oil tank 12, so that cooking oil splashes, ingredients, etc. will jump into the top duct 34. It becomes easy. If these oils, foods, and the like enter the exhaust duct 30 through the top duct 34, a serious accident may occur such as a flame or a fire due to high-temperature combustion gas.

  The top duct 34 shown in FIGS. 8 and 9 is a modification of the top duct 34 shown in FIG. 14, and the top duct 34 is a long box-like body that can be placed on or attached to the exhaust duct 30. It has become. The bottom surface of the top duct 34 is fully open so that it can communicate with the upper opening 30 a of the exhaust duct 30. Further, an opening 34 a having a long rectangular shape that substantially coincides with the lateral dimension of the top duct 34 is formed on the front surface of the top duct 34. Accordingly, the combustion gas from the exhaust duct 30 is discharged obliquely forward from the opening 34a of the top duct 34, as shown in FIG. Of course, there may be a situation in which oil droplets, foods, etc. from the oil tank 12 jump into the opening 34a. Therefore, in the embodiment of the present invention, as shown in FIG. 8A, a duct cover 58 set to a size that can cover the top duct 34 completely is provided.

  As for this duct cover 58, the main-body part 58a consists of the box-shaped body which can cover the said top duct 34 from four directions, and the bottom part is open | released entirely. When the duct cover 58 is attached to the top duct 34, the duct cover 58 can spatially communicate with the opening 34a of the top duct 34 (see FIG. 9B). Further, the upper portion of the duct cover 58 is a flange portion 58b that protrudes forward substantially horizontally from the main body portion 58a, and is approximately equal to the lateral dimension of the duct cover 58 on the front side of the upper surface of the protruding flange portion 58b. A rectangular opening 58c is formed. At this time, as shown in FIG. 9 (b), when the duct cover 58 is put on the top duct 34, the combustion gas discharged from the opening 34 a of the top duct 34 is inside the duct cover 58. The size is set such that the air is exhausted upward from the opening 58c after entering the space. That is, since the top duct 34 is covered with the duct cover 58 and there is no exhaust opening on the oil tank side, oil splashes, foodstuffs and the like are prevented from entering during the frying operation. Since the duct cover 58 can be removed from the top duct 34, cleaning and maintenance can be easily performed as necessary. 9B, the opening 34a of the top duct 34 and the opening 58c of the duct cover 58 are not aligned, and the opening directions intersect, for example, 90 ° shift. ing. Therefore, even if oil splashes, foodstuffs, and the like enter the opening 58c of the duct cover 58, they can be almost surely prevented from entering the opening 34a of the top duct 34 located inside.

As shown in FIG. 10 (a), a sliding plate 66 is used for the oil tank 12 of the fryer 10 in order to slide various ingredients into the oil. As shown in FIG. 10 (b), the sliding plate 66 is provided in a state where a part of the sliding plate 66 is immersed in the oil in the oil tank 12 that directly receives the high heat of the gas burner 18, so that convection circulation of oil is performed. Partially inhibit. For this reason, the oil temperature may become partially high.
For this reason, the phenomenon in which the convection of the oil is inhibited by the sliding plate 66 is suppressed by reducing the width of the sliding plate 66. However, in this case, as shown in FIG. 10B, since the width of the sliding plate 66 is smaller than the width of the oil tank 12, the food material fried from the gap between the two may spill into the oil. In order to prevent this, as shown in FIG. 11, it is proposed to provide a large number of through holes 68 in the portion where the sliding plate 66 is immersed in the oil in the oil tank 12, or to provide a plurality of notches 70 as shown in FIG. Is done. Although not shown, a fine mesh net may be provided in place of the through hole 68 and the notch 70. Thus, by providing the through-hole 68, the notch 70, and other nets in the sliding plate 66, the portion where the sliding plate 66 is immersed in oil does not hinder oil convection and partially becomes hot. There is nothing. For this reason, it is not necessary to reduce the width of the sliding plate 66, so that the gap between the oil tank 12 and the sliding plate 66 is reduced, and the food material does not spill into the oil.

10 fryer, 12 oil tank, 14 fryer body, 16 combustion chamber,
18 Gas burner, 20 Exhaust passage, 26 Inner box, 28 (Inner box) opening,
30 exhaust duct, 30a upper opening (exhaust duct), 34 top duct,
34a (top duct) opening, 50 windshield, 50a windshield,
50d Folded curved surface (inclined surface), 52 through-hole of windshield, 56 box duct
56a (box duct) side plate, 56b (box duct) rear plate,
58 Duct cover, 58c (Duct cover) opening,
α Required distance (between windshield and top duct)

Claims (7)

A fryer body (14) provided with an oil tank (12) for storing cooking oil, a combustion chamber (16) provided with a gas burner (18) for heating the oil tank (12) from the outside, and the oil tank (12) And an inner box (26), communicated with the combustion chamber (16), and the combustion gas of the gas burner (18) heated the oil tank (12) and then the exhaust opening (28 And an exhaust duct (30) provided on the back surface of the fryer body (14) and extending upward, and communicating with the opening (28) below the exhaust passage (20). In the flyer comprising the top duct (34) disposed in the upper opening (30a) of the exhaust duct (30),
A windshield plate (50) positioned above the oil tank (12) is provided, facing the front away from the top duct (34) of the exhaust duct (30) by a required distance (α). Flyer to do.   The windshield plate (50) includes a windshield surface (50a) and a bent curved surface (50d) bent below the windshield surface (50d), and the folded curved surface (50d) is formed on the top duct (34) with respect to the windshield surface (50a). The fryer according to claim 1, wherein the flyer is inclined so as to approach the side.   The folding surface (50d) inclined below the windshield plate (50) has a through hole (52) for guiding the wind from above along the back side of the windshield plate (50) to escape. The flyer according to claim 2, wherein is established.   The windshield plate (50) is provided with side plates (56a, 56a) on both side edges of the windshield plate (50), and a rear plate (56b) on the rear side edges of the both side plates (56a, 56a). The flyer according to any one of claims 1 to 3, wherein the flyer is configured as a box duct (56), and the box duct (56) is detachably mounted on the exhaust duct (30).   The fryer according to any one of claims 1 to 4, wherein the box duct (56) is combined and integrated with the top duct (34).   A duct cover (58) is detachably provided so as to accommodate the top duct (34) provided in the exhaust duct (30), and an opening (58c) for exhausting air is provided on the upper surface of the duct cover (58). The flyer according to claim 1, which is provided.   The fryer according to claim 6, wherein the opening direction of the opening (58c) in the duct cover (58) and the opening direction of the opening (34a) provided in the top duct (34) intersect.

Images