Flyer

Abstract

To provide a fryer capable of efficiently heating an oil can having a fastening / winding part, by an electric heater.SOLUTION: A fryer 1 comprises: a division oil tank for storing therein, cooking oil; a pulse combustor for heating the cooking oil; a mounting table 25 which stores therein, solid oil for supplying into the division oil tank, and on which there is mounted an eighteen litre drum 50 having a downward fastening / winding part 53 formed on a peripheral edge of a bottom face part 52; and an electric heater 30 being provided on a bottom plate 26 of the mounting table 25 for heating the eighteen litre drum 50. The electric heater 30 is stored in a lower heater case 29 which is formed into a shape which is stored inside of the fastening / winding part 53 of the eighteen litre drum 50 in plan view, and is provided on the bottom plate 26. In a state of mounting the eighteen litre drum 50 on the mounting table 25, a top face of the lower heater case 29 directly contacts the bottom face part 52 at an internal side of the fastening / winding part 53.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present disclosure relates to a commercial fryer that heats cooking oil in an oil vat and cooks food by placing it in the oil vat. [Background technology]

[0002] The fryer is provided with a heating means such as a pulse burner in an oil tank that contains cooking oil, and is capable of heating food by heating the cooking oil. As the cooking time or frequency increases, the amount of impurities that accumulate during cooking increases, causing the cooking oil to deteriorate and resulting in a decline in cooking quality. In addition, the amount of cooking oil decreases as the oil is absorbed by the ingredients. Therefore, it becomes necessary to filter the cooking oil periodically depending on the cooking time or frequency, or to replenish it with new cooking oil (additional oil). Therefore, Patent Document 1 discloses an invention in which a 18L can containing solid oil such as lard is placed inside the vessel and piping is connected to an oil tank, and a controller controls an electric heater installed on the bottom of the 18L can to maintain the temperature of the can at a specified temperature (e.g. 80°C). Here, when a sensor confirms a drop in the oil level in the oil tank, the controller opens a valve installed on the piping to operate a pump, making it possible to add liquefied cooking oil from the 18L can. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-119995 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in oil cans such as 18L cans, the body, top plate, and bottom plate are joined by a rolling process, so a rolling part that protrudes downward from the bottom plate is formed around the entire periphery of the bottom plate. Therefore, even if an electric heater is placed below the oil can, it does not come into direct contact with the bottom plate, making it difficult to heat the oil can efficiently.

[0005] Therefore, an object of the present disclosure is to provide a fryer that can efficiently heat an oil can having a seaming portion using an electric heater. [Means for solving the problem]

[0006] In order to achieve the above object, the present disclosure provides an oil tank for storing cooking oil, A heating means for heating the cooking oil; an oil can storage section in which an oil can having a downwardly facing seamed portion formed on an outer periphery of a bottom surface portion is placed, the oil can storage section storing solid oil to be replenished to the oil tank; an electric heater provided on the inner bottom surface of the oil can storage section for heating the oil can; 、 The electric heater is housed in a case that has a shape that fits inside the seam of the oil can in a plan view and is provided on the inner bottom surface, and when the oil can is placed in the oil can storage section, the upper surface of the case directly abuts on the bottom surface inside the seam. A flyer, The oil can storage section is provided with a support cart on which the oil can is placed and which can be inserted and removed from the oil can storage section, the support cart has a platform on which the tightening unit can be placed and wheels that support the platform at a position higher than an upper surface of the case, and the platform has an opening through which the case can pass, The inner bottom surface is formed with a recess or a hole into which the wheel fits when the support cart on which the oil can is placed reaches a placement position for the oil can, When the wheels are fitted into the recesses or holes in the mounting position, the mounting stand sinks below the top surface of the case, relatively penetrating the case into the opening, and the top surface of the case protruding upward from the opening is directly abutted against the bottom surface inside the tightening portion. Effect of the Invention

[0007] According to the present disclosure, the top surface of the case that houses the electric heater directly contacts the bottom surface of the oil can, so that the solid oil in the oil can having a seam can be efficiently heated and quickly liquefied. Also Even if a support cart is provided, the support cart can be lowered at the placement position so that the case can directly contact the bottom of the oil can. This allows the oil can to be quickly inserted and removed. [Brief description of the drawings]

[0008] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a side view of the fryer. [Figure 4] FIG. [Diagram 5] FIG. 2 is an exploded perspective view of the one-gallon can and the stand portion. [Figure 6] FIG. 3 is an enlarged cross-sectional view taken along line AA in FIG. 2. [Figure 7] FIG. 7 is an enlarged cross-sectional view taken along line BB in FIG. [Figure 8] FIG. 2 is an enlarged cross-sectional view of the lower part of the plug-in tube. [Figure 9] FIG. 1 is an explanatory diagram of the insertion and removal of the support cart; (A) shows the extension position, and (B) shows the position just before the loading position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. Fig. 1 is a perspective view showing an example of a fryer, Fig. 2 is a front view of the fryer, Fig. 3 is a side view, and Fig. 4 is a plan view. The fryer 1 has a square box-shaped body 2 formed by attaching an outer plate (not shown) to a frame 3. A pair of left and right oil tanks 4, 4 are provided in the upper part of the body 2. A plurality of casters 5, 5... are provided on the underside of the body 2. The configuration of the fryer 1 is substantially the same for each of the oil vats 4 on the left and right sides, and therefore, unless otherwise specified, the right-side oil vat 4 will be mainly described. The oil vat 4 is divided into a pair of separate oil vats 4a, 4a by a partition plate 6 extending in the front-rear direction at the center in the left-right direction. A pulse combustor 7 is installed in each separate oil vat 4a. The pulse combustor 7 is equipped with a combustion chamber 8 and a tail pipe 9. One end of the tail pipe 9 is connected to the side of the combustion chamber 8. The other end of the tail pipe 9 is drawn out to the front side of the oil vat 4. An oil surface temperature sensor 10 is provided on the front wall of each separate oil vat 4a. A cooking temperature sensor 11 is provided on the rear wall of each separate oil vat 4a.

[0010] An air chamber 12 is provided on the outside of the front side of the oil vat 4. A mixing chamber (not shown) is provided in the air chamber 12, and the mixing chamber communicates with each combustion chamber 8. A gas conduit 13 equipped with a gas solenoid valve 14 is connected to each mixing chamber to supply fuel gas. Each mixing chamber is connected to an air supply pipe 15. The air supply pipe 15 is connected to a fan 16 provided at the rear bottom of the body 2, and air for combustion is supplied thereto. The tail pipes 9, 9 drawn out to the outside of the oil vat 4 are connected to a pair of left and right exhaust pipes 17, 17 in the air chamber 12. The exhaust pipes 17, 17 are drawn out from the air chamber 12 and routed to the rear of the vessel body 2, and then extend upward behind the oil vat 4 to be able to discharge the combustion exhaust. Cylindrical mufflers 18, 18 are provided at the upward downstream ends of the exhaust pipes 17, 17. The upper parts of the mufflers 18, 18 are covered from above by an exhaust pipe cover 19, and the upper ends of the exhaust pipes 17, 17 protrude into an exhaust adapter 20.

[0011] A stand 25 for a 18L can 50 is provided below the right oil tank 4. The stand 25 is box-shaped and protrudes below the bottom surface of the frame 3, opening forward and upward. As shown in Figs. 5 and 6, the stand 25 has a bottom plate 26, left and right side plates 27, 27, and a rear plate 28. A lower heater case 29, which is a square shape in plan view and is one size smaller than the bottom plate 26, is provided on the bottom plate 26. The lower heater case 29 is formed to be one size smaller than the shape of a seaming portion 53 of the 18L can 50 described later in plan view. A planar electric heater 30 is provided on the upper inner surface of the lower heater case 29. Four square holes 31, 31... are formed in the bottom plate 26 around the lower heater case 29, aligned front to back and left to right. A rear heater case 32 incorporating a planar electric heater 33 is also provided on the rear plate 28. A one-gallon can temperature sensor 34 is provided on the rear plate 28 below the rear heater case 32. A support cart 35 is provided on the placement stand 25. The support cart 35 is formed by stacking a lower stand 36 and an upper stand 37 one above the other. The lower stand 36 has a rectangular shape in a plan view extending in the front-rear direction with a left-right width larger than that of the lower heater case 29. A lower front edge portion 38 and lower side edges 39, 39 that are bent downwards are formed at the front end portion and the left and right ends of the lower stand 36. A lower hole 40 having a rectangular shape in a plan view is formed in the center of the lower base 36, through which the lower heater case 29 can pass. A pair of front and rear wheels 41, 41 with their axes in the left-right direction are provided on the outer sides of the lower side edges 39, 39, respectively. The lower surface of the lower base 36 is located higher than the upper surface of the lower heater case 29 when the wheels 41, 41... are placed on the bottom plate 26.

[0012] The upper base 37 has a rectangular shape in plan view that is shorter in front-to-back length and larger in left-to-right width than the lower base 36. An upper front edge portion 42, an upper rear edge portion 43, and an upper side edge portion 44 that are bent upward are formed at the front, rear, and right ends of the upper base 37. An upper hole 45 that is rectangular in plan view and through which the lower heater case 29 can pass, like the lower base 36, is formed in the center of the upper base 37 at a position that overlaps with the lower hole 40. The four wheels 41, 41... of the lower base 36 correspond to the square holes 31, 31... provided in the bottom plate 26. When each wheel 41 reaches each square hole 31, the lower part of each wheel 41 fits into the corresponding square hole 31, and the support cart 35 sinks downward as shown in Figures 6 and 7. In this fitting position, the lower heater case 29 protrudes upward relatively and passes through the lower hole 40 of the lower base 36 and the upper hole 45 of the upper base 37. Therefore, the upper surface of the lower heater case 29 protrudes upward more than the upper surface of the upper base 37.

[0013] A 18L can 50 is placed on the upper base 37 of the support cart 35. The 18L can 50 has a body portion 51 that is square in plan view, and a bottom surface portion 52 that closes the bottom surface of the body portion 51. The lower end of the body portion 51 and the periphery of the bottom surface portion 52 are joined by seaming. Thus, a seamed portion 53 that protrudes downward beyond the bottom surface portion 52 is formed around the entire periphery of the bottom surface portion 52. The amount of protrusion of the lower heater case 29 from the upper base 37 in the aforementioned fitted position is set to be greater than the amount of downward protrusion of the seamed portion 53. On the other hand, the upper base 37 is formed to be one size larger than the shape of the tightening portion 53 in a plan view. The lower hole 40 of the lower base 36 and the upper hole 45 of the upper base 37 are formed to be one size smaller than the shape of the tightening portion 53 in a plan view, similar to the lower heater case 29. Therefore, when the one-gallon can 50 is placed on the upper stand 37 , the seaming portion 53 abuts against the upper surface of the upper stand 37 outside the upper hole 45 .

[0014] A lid 55 is placed on top of the body 51 of the one-gallon can 50. The lid 55 is in the shape of a shallow box with an open bottom, and is square in plan view, slightly larger than the body 51. A handle 56 is provided on the front part of the upper surface of the lid 55. An insertion hole 57 is formed in the center in the front-to-rear direction near the right side of the lid 55. An inverted U-shaped metal fitting 58, which has a square hole 59 formed directly below the insertion hole 57, is attached to the back surface of the lid 55 below the insertion hole 57. A support portion 60 for a suction pipe 65, which will be described later, is provided on the upper surface of the lid body 55 around the insertion hole 57. The support portion 60 is formed of an inverted U-shaped metal fitting fixed to the lid body 55 in a manner that straddles the upper part of the insertion hole 57 in the left-right direction. A slit 61 is formed in the left-right direction on the upper surface of the support portion 60. Cutouts 62A and 62B that are U-shaped in side view and communicate with the slit 61 are formed on the left and right side surfaces of the support portion 60. A pair of locking pieces 63 and 63 extending in the up-down direction are formed facing each other on the front and rear edges of the right cutout 62B. Therefore, the front-rear width of the cutout 62B is smaller than the front-rear width of the left cutout 62A.

[0015] The suction pipe 65 comprises an insertion pipe 66 extending in the vertical direction, an extension pipe 67 connected to the upper end of the insertion pipe 66 and extending in the left-right direction, and a connecting pipe 68 connected to the right end of the extension pipe 67 and extending rearward. Insertion pipe 66 has a circular cross section and is inserted into one-gallon can 50 through insertion hole 57 in lid 55 and square hole 59 in metal fitting 58. Insertion pipe 66 has an upper main body portion 69 and a lower suction portion 70. The main body portion 69 and suction portion 70 have approximately the same outer diameter, but as for the inner diameter, inner diameter D1 of main body portion 69 is larger than inner diameter D2 of suction portion 70, as shown in Figure 8. The lower end surface 71 of the suction portion 70 is formed in a tapered shape that tapers downward in the axial direction of the suction portion 70. A circular suction port 72 that opens coaxially with the axis of the suction portion 70 is formed in the center of the lower end surface 71. The diameter D3 of the suction port 72 is smaller than the inner diameter D2 of the suction portion 70. A plurality of horizontal holes 73, 73..., each having an axis extending in the radial direction of suction portion 70, are formed in the peripheral surface of suction portion 70 above lower end surface 71 at equal intervals in the circumferential direction of suction portion 70. The diameter of horizontal hole 73 is smaller than that of suction port 72.

[0016] The extension pipe 67 is a tube with a circular cross section whose left end is closed, and is supported by the support part 60 on the upper side of the cover body 55. The extension pipe 67 is supported in the left-right direction by fitting from above into the slit 61 and the cuts 62A, 62B of the support part 60. A ring-shaped locking groove 74 is formed on the outer periphery near the right end of the extension pipe 67, into which the locking pieces 63, 63 of the cuts 62B engage when fitted. Therefore, the left-right movement of the extension pipe 67 on the support part 60 is restricted by the locking pieces 63, 63. However, the extension pipe 67 can move up and down within the cuts 62A, 62B. The connecting pipe 68 is a pipe body with a circular cross section that is closed at the front end, and the extension pipe 67 is connected to the left side surface of the connecting pipe 68. A connecting portion 75 for connecting to a top-up oil pump 80 (described later) is provided facing rearward at the rear end of the connecting pipe 68.

[0017] The 18L can 50 is in a state where the lid 55 is placed on the body 51, the insertion pipe 66 of the suction pipe 65 is inserted into the insertion hole 57 and the square hole 59 from above, and the extension pipe 67 is supported by the support part 60. Then, the insertion pipe 66 hangs downward inside the body 51, and the suction part 70 is located at the bottom of the body 51. The connecting pipe 68 is in a position where the connection part 75 protrudes rearward. Here, even if the 18L can 50 contains solid oil such as lard as cooking oil, the insertion pipe 66 has the suction port 72 at the lower end surface 71 of the suction section 70, so that the contact area with the solid oil is small, and the insertion pipe 66 can be inserted with a relatively small force. In particular, since the lower end surface 71 is tapered, the resistance when inserting into the solid oil is reduced, and the insertion pipe 66 can be easily inserted. In addition, since the diameter D3 of the suction port 72 is smaller than the inner diameter D2 of the suction section 70, the possibility that the solid oil that has entered the suction section 70 through the suction port 72 will cause clogging in the suction section 70 is reduced. In particular, immediately after the insertion pipe 66 is inserted into the solid oil, the solid oil that has entered through the suction port 72 remains in the suction section 70, but a gap is generated around the remaining solid oil in the suction section 70, which has a larger diameter than the suction port 72. Therefore, the solid oil that is subsequently liquefied and sucked in through suction port 72 can pass through the gap and flow toward main body 69. Furthermore, since the inner diameter D1 of main body 69 is larger than the inner diameter D2 of suction portion 70, the solid oil that has passed through suction portion 70 can pass smoothly through main body 69, which has a large diameter.

[0018] An oil top-up pump 80 is provided to the right of the connecting pipe 68. The oil top-up pump 80 has a suction block 81 on the left side and a discharge block 82 on the right side. A connection port 83 is provided on the front side of the suction block 81. The connection part 75 of the connecting pipe 68 can be inserted into the connection port 83 from the front and connected to the discharge block 82. An oil top-up pipe 84 is connected to the discharge block 82. The oil top-up pipe 84 is routed upward within the device body 2 and branches out for each divided oil tank 4a, and is connected to an oil top-up port 85 (Figure 3) provided on the front wall of each divided oil tank 4a via an oil top-up solenoid valve 86. In this way, in the vessel body 2, a supply path R is formed that connects each separate oil tank 4a to the one-gallon can 50 and can supply cooking oil in the one-gallon can 50 to each separate oil tank 4a. However, the supply path R is separated into a first path R1 and a second path R2. The first path R1 is a path that extends from an insertion pipe 66 inserted into the one-gallon can 50 through an extension pipe 67 to a connection portion 75 of a connection pipe 68, i.e., a path formed within the suction pipe 65, as shown by a two-dot chain line in Figures 5 and 7. The second path R2 is a path that extends from a connection port 83 of a suction block 81 through an oil top-up pump 80 and an oil top-up pipe 84 to an oil top-up port 85 of each divided oil tank 4a, as shown by a two-dot chain line in Figures 3 and 5.

[0019] The 18L can 50 with the suction pipe 65 set therein is placed on the upper platform 37 of the support cart 35 which has been pulled out forward from the stand 25. In this pulled-out position of the support cart 35, as shown in Figure 9(A), the front left and right wheels 41, 41 of the lower platform 36 have descended forward from the bottom plate 26 of the stand 25, and the rear left and right wheels 41, 41 remain near the front end of the bottom plate 26. The 18L can 50 is placed on the upper platform 37 from the left side, where there is no upper side portion. Then, the seaming portion 53 comes into contact with the upper surface of the upper platform 37 outside the upper hole 45, as described above. From this position, the front end of the support cart 35 is lifted and the support cart 35 is pushed backward. Then, as shown in Fig. 9(B), the front wheels 41, 41 are placed on the bottom plate 26 again, and the support cart 35, now in a horizontal position, moves backward on the bottom plate 26. At this time, the lower platform 36 is positioned higher than the upper surface of the lower heater case 29, so the support cart 35 can move without interfering with the lower heater case 29. When the front and rear wheels 41, 41... reach the position of the square holes 31, 31... of the bottom plate 26, the lower part of each wheel 41 fits into each square hole 31 and the support cart 35 sinks downward. In this fitting position (loading position), the one-gallon can 50 reaches directly above the lower heater case 29. At the same time as the support cart 35 arrives at the placement position, the lower heater case 29 passes relatively through the lower hole 40 of the lower base 36 and the upper hole 45 of the upper base 37, and protrudes upward from the upper surface of the lower base 36. As described above, the amount of protrusion of the lower heater case 29 is greater than the amount of protrusion of the seaming portion 53, so the bottom portion 52 of the 18-liter can 50 is placed directly on the upper surface of the lower heater case 29, as shown in Figures 6 and 7. At this time, the seaming portion 53 is raised above the upper base 37. In this placement position, the rear heater case 32 and the 18-liter can temperature sensor 34 abut against the back surface of the body portion 51.

[0020] Meanwhile, as the support cart 35 moves, the suction pipe 65 attached to the lid 55 also moves rearward together with the 18L can 50. Then, the connection tube 68 of the suction pipe 65 also approaches the suction block 81 of the top-up oil pump 80 with the connection part 75 facing rearward. However, in the state of Figure 9(B) where the four wheels 41, 41... are placed on the bottom plate 26, the connection part 75 is also in a position slightly higher than the position where it is inserted into the suction block 81. Then, when each wheel 41 reaches each square hole 31 and the support cart 35 starts to sink, the connection part 75 also descends and is inserted into the connection port 83 of the suction block 81 at the fitting position of the support cart 35. Even if the insertion of the connection part 75 does not go smoothly, the suction pipe 65 can move upward on the support part 60, so the suction pipe 65 is temporarily lifted from the support part 60 so that it does not interfere with the suction block 81, and the support cart 35 is first fitted into the fitting position. Thereafter, the suction pipe 65 can be supported by the support part 60 while the connection part 75 is being inserted into the connection port 83. In this way, a supply path R is formed in which the first path R1 and the second path R2 are connected, and cooking oil sucked from the insertion pipe 66 of the suction pipe 65 can be supplied to the oil addition port 85 via the extension pipe 67, the connecting pipe 68, the oil addition pump 80, the oil addition pipe 84, and the oil addition solenoid valve 86.

[0021] As shown in Figures 1 and 2, a filtering tank 90 with a filter at the bottom is provided below the left-hand oil vat 4 at the bottom of the device body 2. A collecting pipe 92 is provided in the left-right direction above the filtering tank 90, and is connected to an oil drain pipe 91 (Figures 2 and 7) provided at the bottom of each separate oil vat 4a. The downstream end of the collecting pipe 92 is connected to the filtering tank 90, and cooking oil in each separate oil vat 4a can be drained to the filtering tank 90 via the collecting pipe 92. Each oil drain pipe 91 is provided with an oil drain valve that is a normally closed valve, and each oil drain valve can be opened by manually operating an oil drain lever 93 provided on the front side. A filtering pump 95 (FIG. 3) is provided at the bottom of the vessel body 2. The suction side of the filtering pump 95 is connected to the bottom of the filtering tank 90 via a suction pipe. The discharge side of the filtering pump 95 is connected to an oil supply pipe 96 that branches off for each of the divided oil tanks 4a. Each oil supply pipe 96 is provided with an oil supply valve that is a normally closed valve, and each oil supply valve can also be opened by manually operating an oil supply lever 97 provided on the front side.

[0022] A fry controller 100 is provided for each separate oil tank 4a at the upper front portion of the device 2. An operation panel 101 equipped with a display unit, operation buttons, etc. is provided on the front surface of the fry controller 100. The operation panel 101 allows the user to set a specific cooking mode and a maintenance menu, etc. A burner controller 102 is provided at the bottom of the device body 2. Detection signals from various sensors and the like are input to the burner controller 102. In accordance with instructions from the fry controller 100, the burner controller 102 controls the pulse combustor 7, the fan 16, the various pumps, the heat retention heater, and the various solenoid valves to cook the food to be cooked, filter the cooking oil, and the like.

[0023] In the fryer 1 configured as above, with a predetermined amount of cooking oil stored in the separate oil tank 4a, the user turns on the operation switch of the operation panel 101. Then, the burner controller 102 intermittently burns the mixed gas in the combustion chamber 8 to turn the pulse combustor 7 on and off. That is, the mixed gas is ignited in the combustion chamber 8 to cause it to explode and burn in the combustion chamber 8, and the combustion exhaust is forcibly discharged to the tail pipe 9 due to the increase in pressure in the combustion chamber 8 caused by the combustion. Then, fuel gas and combustion air are sucked into the combustion chamber 8, which is placed under negative pressure due to the discharge of the combustion exhaust. This on and off operation is repeated to heat the cooking oil stored in the separate oil tank 4a. Burner controller 102 monitors the detected temperature obtained from cooking temperature sensor 11. When the detected temperature reaches a predetermined cooking temperature (for example, 180 to 182°C), fry controller 100 notifies the user by, for example, outputting a display indicating that cooking is OK on operation panel 101. When this notification is given, the cook places the basket containing the food to be cooked into separate oil vat 4a.

[0024] Then, when a cooking mode is selected by operating the operation panel 101 and the cooking start button is pressed, the burner controller 102 heats and cooks the food to be cooked for a preset cooking time and with the heat amount of the pulse burner 7. When the time is up, the fry controller 100 sounds an alarm to notify the end of cooking. At this time, the combustion exhaust gas generated from the pulse combustor 7 moves through the exhaust pipes 17, 17 to the rear side of the oil tank 4, is discharged into the exhaust adapter 20 through the mufflers 18, 18, and is discharged forward from the exhaust adapter 20. During cooking, the oil-adding solenoid valve 86 is closed. Therefore, even if the oil level reaches the oil-adding port 85 when the food to be cooked is placed in the separate oil tank 4a, the oil will not flow back to the oil-adding pipe 84.

[0025] Meanwhile, during operation, the burner controller 102 monitors the detected temperature obtained from the one-gallon can temperature sensor 34 mounted on the stand 25. Then, the burner controller 102 controls ON / OFF of the electric heater 30 in the lower heater case 29 and the electric heater 33 in the rear heater case 32 so that a predetermined insulation temperature is maintained in the one-gallon can 50. As a result, the solid oil in the one-gallon can 50 becomes liquefied. When the burner controller 102 detects a decrease in the required cooking oil using the oil surface temperature sensor 10 or when a predetermined number of cooking operations has been reached, it drives the oil addition pump 80 to open the oil addition solenoid valve 86 of the corresponding separate oil tank 4a. Then, the cooking oil liquefied in the one-gallon can 50 is sucked in through the suction port 72 and the horizontal hole 73 of the insertion tube 66 of the suction pipe 65. As described above, the sucked in cooking oil flows through the supply path R and is supplied to the oil refill port 85. Therefore, the cooking oil is supplied from the oil refill port 85 along the upper surface of the front wall into the separate oil tank 4a.

[0026] (Effect of disclosure regarding one-gallon cans and lower heater cases) The fryer 1 of the above-mentioned form comprises a divided oil tank 4a (oil tank) for storing cooking oil, a pulse burner 7 (heating means) for heating the cooking oil, a stand 25 (oil can storage section) on which a one-gallon can 50 (oil can) is placed, in which solid oil for refilling the divided oil tank 4a is stored and which has a downward-facing seamed portion 53 formed on the outer peripheral edge of the bottom portion 52, and an electric heater 30 provided on the bottom plate 26 (inner bottom surface) of the stand 25 for heating the one-gallon can 50. The electric heater 30 is housed in a lower heater case 29 (case) that is provided on the bottom plate 26 and has a shape that fits inside the seaming portion 53 of the one-gallon can 50 in a plan view. When the one-gallon can 50 is placed on the stand 25, the upper surface of the lower heater case 29 directly abuts against the bottom portion 52 inside the seaming portion 53. According to this configuration, the solid oil in the one-gallon can 50 having the seaming portion 53 can be efficiently heated and quickly liquefied.

[0027] The stand 25 is provided with a support cart 35 on which the 18L can 50 can be placed and which can be moved in and out of the stand 25, and the support cart 35 has a lower stand 36 and an upper stand 37 (mounting stands) on which the seaming part 53 can be placed, and wheels 41 which support the lower stand 36 and the upper stand 37 at a position higher than the upper surface of the lower heater case 29, and the lower stand 36 and the upper stand 37 are formed with a lower hole 40 and an upper hole 45 (opening) through which the lower heater case 29 can pass. Also, the bottom plate 26 is formed with a square hole 31 (hole portion) into which the wheel 41 fits when the support cart 35 with the 18L can 50 placed thereon reaches the mounting position for the 18L can 50. When the wheels 41 are fitted into the rectangular holes 31 in the placed position, the lower base 36 and the upper base 37 sink below the upper surface of the lower heater case 29, relatively penetrating the lower heater case 29 into the lower hole 40 and the upper hole 45, and the upper surface of the lower heater case 29 protruding upward from the lower hole 40 and the upper hole 45 directly abuts against the bottom portion 52 inside the tightening portion 53. Therefore, even if the support cart 35 is used, the support cart 35 can be lowered at the placement position to allow the lower heater case 29 to directly abut against the bottom surface 52 of the 18L can 50. This allows the 18L can 50 to be quickly inserted and removed.

[0028] Next, a modification of the disclosure relating to the one-gallon can and the lower heater case will be described. The shapes of the lower and upper platforms of the support cart can be modified as appropriate. The left and right width of the lower platform can be made larger than that of the upper platform, the lower front edge can be omitted, or the upper side edge can be provided on the opposite side. However, the mounting base does not have to be formed of an upper base and a lower base, and only the portion corresponding to the upper base may be used as the mounting base and provided with wheels. The holes in the bottom plate of the stand into which the wheels are fitted may be recesses. The support cart itself may be omitted. In this case, the cook may place or remove the 18L can directly on or from the lower heater case of the stand, or a rail may be provided on the bottom plate of the stand to guide the 18L can to the front of the lower heater case. The stand itself may be designed to be removable. The oil can is not limited to a 18L can, as long as it has a can body with a seamed portion. An oil can without a lid and having a seamed top plate may also be used. The rear heater case can be omitted. Heater cases can also be provided on the left and right sides of the oil can.

[0029] (Effects of disclosure regarding separation of supply routes) The fryer 1 of the above-mentioned embodiment includes a divided oil tank 4a (oil tank) for storing cooking oil, a pulse burner 7 (heating means) for heating the cooking oil, a stand 25 (oil can storage section) on which a one-gallon can 50 (oil can) containing cooking oil to be replenished to the divided oil tank 4a is placed, and a supply path R that connects the divided oil tank 4a and the one-gallon can 50 and can supply the cooking oil in the one-gallon can 50 to the divided oil tank 4a. The supply path R is formed separately into a first path R1 including an insertion pipe 66 inserted into the one-gallon can 50 and a connection part 75 (oil can side connection part) connected to the insertion pipe 66 and protruding to the outside of the one-gallon can 50, and a second path R2 whose downstream end is connected to the divided oil tank 4a and whose upstream end is a connection port 83 (oil tank side connection part) to which the connection part 75 is removably connected. According to this configuration, durability is ensured by using a metal insertion pipe 66, and even though the insertion pipe 66 is made of metal, it is easy to insert it into and remove it from the one-gallon can 50, and to insert and remove the one-gallon can 50 with the insertion pipe 66 inserted into it into the stand 25.

[0030] The can 50 can be inserted and removed between a placed position on the stand 25 and a pulled-out position from the placed position, and the can 50 is provided with a lid 55 that covers the opening on the top and into which an insertion pipe 66 is inserted, and the lid 55 has a support part 60 that supports a connection part 75 when the insertion pipe 66 is inserted. In the pulled-out position of the can 50, the connection part 75 supported by the support part 60 and the connection port 83 face each other, and as the can 50 moves to the placed position, the connection part 75 also moves to a connection position with the connection port 83. Therefore, even if the 18L can 50 can be inserted and removed, the separated connection portion 75 of the first route R1 and the connection port 83 of the second route R2 can be easily connected.

[0031] An extension pipe 67 extending in the left-right direction (a direction intersecting the direction in which the one-gallon can 50 is inserted and removed) is provided between the insertion pipe 66 and the connection portion 75, and an engagement groove 74 is formed on the outer periphery of the extension pipe 67. The support portion 60 supports the extension pipe 67 and is equipped with an engagement piece 63 (engagement portion) that engages with the engagement groove 74 when the extension pipe 67 is supported, thereby restricting the left-right movement of the extension pipe 67. Therefore, the left-right movement of the connection part 75 can be restricted via the extension pipe 67, making it easier to connect to the connection port 83. Also, since the insertion pipe 66 and the connection part 75 can move up and down relative to the one-gallon can 50, it is possible to correct any misalignment when connecting to the connection port 83, and it is also possible to absorb the up and down movement when the one-gallon can 50 is inserted or removed, thereby suppressing the load applied to the insertion pipe 66 etc. In the second path R2, an oil-adding pump 80 (pump) is provided adjacent to the connection port 83. Therefore, the connection part 75 and the connection port 83 are close to the oil-adding pump 80, which prevents the cooking oil from solidifying before it reaches the oil-adding pump 80, and ensures that oil is added to the separate oil tank 4a.

[0032] Next, a modification of the disclosure relating to separation of the supply paths will be described. In the above embodiment, the connection portion on the first path side is a convex portion (connection portion 75) and the connection portion on the second path side is a concave portion (connection port 83), but the concave and convex portions may be reversed. Connection structures other than the concave and convex portions may also be adopted. The structure of the support part can be changed as appropriate. For example, the support part may be a block body that receives the extension pipe. The support part and the oil pump may also be disposed closer to the front than in the above embodiment. If the support part and the oil pump are disposed closer to the front, the connection state can be easily checked visually. The extension pipe may have the locking groove formed on the left side instead of the right side, or on both sides. The locking groove may be omitted. The extension pipe may be omitted, and the connecting pipe may be directly connected to the insertion pipe.

[0033] (Effect of disclosure regarding plug pipes) The fryer 1 of the above-mentioned form comprises a separate oil tank 4a (oil tank) for storing cooking oil, a pulse burner 7 (heating means) for heating the cooking oil, a stand 25 (oil can storage section) on which a one-gallon can 50 (oil can) containing solid oil to be replenished to the separate oil tank 4a is placed, and a supply path R which connects the separate oil tank 4a and the one-gallon can 50 and has an oil top-up pump 80 (pump) and can supply the solid oil in the one-gallon can 50 to the separate oil tank 4a, and the supply path R connected to the one-gallon can 50 is an insertion pipe 66 which is inserted into the one-gallon can 50. The insertion pipe 66 has a main body 69 and a suction portion 70 located further tip than the main body 69, and a suction port 72 having a smaller diameter than the inner diameter D2 of the suction portion 70 is formed concentrically with the axis of the suction portion 70 at the lower end surface 71 (tip surface) of the suction portion 70, and the inner diameter D1 of the main body 69 is larger than the inner diameter D2 of the suction portion 70. With this configuration, the contact area between the tip of suction portion 70 and solid oil is reduced, and insertion pipe 66 can be easily inserted into solid oil in one-gallon can 50 with a relatively small force. In addition, solid oil that has entered suction portion 70 through small-diameter suction port 72 is less likely to clog suction portion 70, and solid oil that has entered main body portion 69 from suction portion 70 is less likely to clog main body portion 69. This makes it possible to prevent the internal passage from being clogged by solid oil that has entered insertion pipe 66.

[0034] The lower end surface 71 of the suction portion 70 is tapered toward the tip side, which effectively reduces the resistance when the suction portion 70 is inserted into the solid oil, making the suction portion 70 easier to insert. A plurality of horizontal holes 73 are formed on the outer periphery of suction portion 70 except for the lower end surface 71, with the axis being the radial direction of suction portion 70. Therefore, even if solid oil sucked into suction portion 70 from suction port 72 remains, a gap is formed between the inner periphery of suction portion 70, which has a larger inner diameter than suction port 72. Therefore, liquefied solid oil can be sucked into suction port 72 from horizontal holes 73 through the gap, and clogging of insertion pipe 66 by solid oil can be more effectively prevented.

[0035] Next, a modification of the disclosed plug-in pipe will be described. The lower end surface of the suction portion does not have to be tapered. The main body and the suction portion may be formed integrally instead of being separate bodies. Conversely, the suction portion may be formed separately into a lower end portion having a suction port and an upper end portion having a horizontal hole. The plug tube may have a split structure that is split along the axial plane. The number and positions of the horizontal holes on the outer periphery of the suction portion can be changed as appropriate. The size and shape of the horizontal holes can also be changed as appropriate, and horizontal holes of different diameters and shapes can be provided. Horizontal holes can also be omitted.

[0036] Other examples of modifications common to each disclosure will be described below. In the above embodiment, a fryer in which two oil tanks are arranged side by side to form separate oil tanks is exemplified, but the disclosures can also be applied to fryers in which one oil tank or three or more oil tanks are arranged side by side to form separate oil tanks. In addition, the disclosures are applicable even if no partition plate is provided in each oil tank and the tank is not a divided oil tank. The heating means is not limited to a pulse combustor, but a burner or an electric heater may also be used. Each disclosure is also applicable to pressure fryers. [Explanation of symbols]

[0037] 1··Fryer, 2··Unit, 3··Frame, 4··Oil tank, 4a··Split tank, 6··Partition plate, 7··Pulse burner, 25··Placement base, 26··Bottom plate, 27··Side plate, 28··Rear plate, 29··Lower heater case, 30, 33··Electric heater, 31··Square hole, 32··Rear heater case, 34··18L can temperature sensor, 35··Support cart, 36··Lower base, 37··Upper base, 40··Lower hole, 41··Wheels, 45··Upper hole, 50··18L can, 51··Body portion, 52··Bottom portion, 53··Rolling portion, 55··Cover body, 57··Insertion hole, 60··Support portion, 6 1··slit, 62A, 62B··notch, 63··locking piece, 65··suction pipe, 66··insertion pipe, 67··extension pipe, 68··connecting pipe, 69··main body, 70··suction section, 71··lower end surface, 72··suction port, 73··horizontal hole, 74··locking groove, 75··connecting section, 80··oil top-up pump, 81··suction block, 82··discharge block, 83··connecting port, 84··oil top-up pipe, 85··oil top-up port, 86··oil top-up solenoid valve, 100··fry controller, 102··burner controller, R··supply path, R1··first path, R2··second path.

Claims

[Claim 1] an oil tank for storing cooking oil; A heating means for heating the cooking oil; an oil can storage section in which an oil can having a downwardly facing seamed portion formed on an outer periphery of a bottom surface portion is placed, the oil can storage section storing solid oil to be replenished to the oil tank; an electric heater provided on the inner bottom surface of the oil can storage section for heating the oil can; The electric heater is housed in a case that has a shape that fits inside the seam of the oil can in a plan view and is provided on the inner bottom surface, and when the oil can is placed in the oil can storage section, the upper surface of the case directly abuts on the bottom surface inside the seam, The oil can storage section is provided with a support cart on which the oil can is placed and which can be inserted and removed from the oil can storage section, the support cart has a platform on which the tightening unit can be placed and wheels that support the platform at a position higher than an upper surface of the case, and the platform has an opening through which the case can pass, The inner bottom surface is formed with a recess or a hole into which the wheel fits when the support cart on which the oil can is placed reaches a placement position for the oil can, A flyer characterized in that, when the wheels are engaged with the recesses or holes in the loading position, the loading platform sinks below the top surface of the case, relatively penetrating the case into the opening, and the top surface of the case protruding upward from the opening is directly abutted against the bottom surface inside the seaming portion.

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