conditioning device

Abstract

The heat from the superheated steam is less likely to escape to the outside of the device, the heating chamber can easily reach a high temperature, and thus the cooking device is provided with high thermal efficiency. [Solution] The cooking device comprises a heating chamber 2 extending laterally, a cylindrical heating housing 3 surrounding the heating chamber 2 from above, below, and both sides, a first cover 5 surrounding the heating housing 3 from at least above and both sides with a first gap 4, a second cover 7 surrounding the first cover 5 from at least above and both sides with a second gap 6, and a superheated steam generator 30 that generates superheated steam. The heating housing 3 is provided with a blowout hole and a first suction hole 13, and the first cover 5 is provided with a second suction hole. The superheated steam is configured to circulate in the following order: first gap 4, blowout hole, heating chamber 2, first suction hole 13, first gap 4, second suction hole, second gap 6, pipeline 15, and first gap 4.

Description

Technical Field

[0005] , ,

[0001] The present invention relates to a cooking device.

Background Art

[0002] Patent Document 1 describes a cooking device including a high-temperature heating chamber with a high-temperature treatment chamber inside, a conveyor for passing a cooking object through the high-temperature treatment chamber, and upper and lower nozzles for directly spraying superheated steam onto the upper and lower surfaces of the cooking object in the high-temperature treatment chamber. The high-temperature heating chamber has a double structure with a stainless steel inner shell and an outer shell, and the gap between the inner shell and the outer shell is filled with heat insulating material such as rock wool. However, in this cooking device, after the superheated steam is directly sprayed onto the upper and lower surfaces of the cooking object, it exits from the high-temperature heating chamber.

[0003] Patent Document 2 is by the applicant of the present application, and includes a baffle surrounding the heating chamber through which the cooking object passes from above and both sides, a transfer device for the cooking object, a housing body surrounding the baffle, and a heating device for sending superheated steam to the ceiling of the housing body. The inside of the baffle is a heating chamber, the space between the baffle and the housing body is a steam circulation chamber, and an outflow hole and an inflow hole for communicating the heating chamber and the steam circulation chamber are formed in the baffle. In this cooking device, since the superheated steam circulates in the order of the steam circulation chamber, the outflow hole, below the baffle, the heating chamber, the inflow hole, and the steam circulation chamber, it is repeatedly used.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the cooking apparatus described in Patent Document 2, the area below the baffle plate was completely open, allowing the heat from the superheated steam to escape outwards from the bottom of the apparatus, making it difficult for the heating chamber to reach high temperatures, thus leaving room for improvement in thermal efficiency.

[0006] Therefore, the objective of this invention is to provide a cooking device that has high thermal efficiency, in which the heat of superheated steam does not easily escape to the outside of the device, the heating chamber can easily reach a high temperature, and so on. [Means for solving the problem]

[0007] [1] A heating chamber extending laterally, A cylindrical heating enclosure surrounds the heating chamber from above, below, and both sides, A cover that surrounds the heating enclosure from at least above and on both sides with a gap between them, It is equipped with a superheated steam generator that generates superheated steam, The heating housing is provided with an outlet hole and an intake hole that connect the heating chamber and the gap. A cooking apparatus characterized by being configured to circulate superheated steam in the following order: gap, outlet, heating chamber, intake hole, and gap.

[0008] [2] A heating chamber extending laterally, A cylindrical heating enclosure surrounds the heating chamber from above, below, and both sides, A first cover surrounds the heating enclosure from at least above and on both sides, with a first gap between them, A second cover surrounds the first cover from at least above and on both sides, with a second gap between them. It is equipped with a superheated steam generator that generates superheated steam, The heating housing is provided with an outlet hole and a first intake hole that connect the heating chamber and the first gap. The first cover is provided with a second suction hole that connects the first gap and the second gap. A separate conduit is provided to connect the first gap and the second gap, in addition to the second suction hole. A cooking apparatus characterized by being configured to circulate superheated steam in the following order: first gap, blowout hole, heating chamber, first intake hole, first gap, second intake hole, second gap, pipeline, and first gap.

[0009] [3] The cooking device according to [2], wherein the pipeline is provided so as to pass outside the second cover.

[0010] [4] The cooking device according to [2] or [3], wherein a blower for circulating superheated steam is provided in the middle of the pipeline.

[0011] [5] The cooking device according to [4], wherein the blower is a sirocco fan. [Advantages of the Invention]

[0012] According to the present invention, it is an object to provide a cooking device with high thermal efficiency, in which the heat of superheated steam hardly escapes outside the device, and the heating chamber is likely to reach a high temperature. [Brief Description of the Drawings]

[0013] [Figure 1] FIG. 1 is a perspective view of the cooking device of Example 1. [Figure 2] FIG. 2 is an exploded perspective view showing the heating housing, the first cover, and the second cover of the cooking device disassembled vertically. [Figure 3] FIG. 3 is a right side view of the cooking device. [Figure 4] FIG. 4 is a sectional view taken along line IV-IV of FIG. 3. [Figure 5] FIG. 5 is a plan view of the cooking device (showing the middle part omitted). [Figure 6] FIG. 6 is a sectional view taken along line VI-VI of FIG. 5. [Figure 7] FIG. 7 is a sectional view taken along line VII-VII of FIG. 5. [Figure 8] FIG. 8 shows the main part of the cooking device of Example 2, (a) is a sectional view at a position corresponding to VI-VI of Example 1, and (b) is a sectional view at a position corresponding to VII-VII of Example 1. [Modes for Carrying Out the Invention]

[0014] (1) Heating housing The heating housing not only surrounds the heating chamber from above and both sides but also from below, so the heat of the superheated steam is difficult to escape to the outside below the device, and the heating chamber tends to become high temperature. The cylindrical shape of the heating housing is not particularly limited, and examples thereof include a square cylindrical shape, a cylindrical shape, a semi-cylindrical shape, etc.

[0015] (2) Cover The cover surrounds the heating housing with a gap at least from above and both sides, and circulates the superheated steam in the order of the gap, the blowout hole, the heating chamber, the suction hole, and the gap, so the superheated steam is repeatedly utilized. The cover preferably surrounds the heating housing with a gap from above, below, and both sides. This is because when surrounded with a gap from below as well, the heat of the superheated steam is more difficult to escape. Furthermore, as described above, when the first cover and the second cover are provided and the superheated steam is circulated through the first gap and the second gap doubly, the heating chamber tends to become higher in temperature. The first cover preferably surrounds the heating housing with a gap from above, below, and both sides. This is because when surrounded with a gap from below as well, the heat of the superheated steam is more difficult to escape. The second cover preferably surrounds the first cover with a gap from above, below, and both sides. This is because when surrounded with a gap from below as well, the heat of the superheated steam is more difficult to escape.

[0016] (3) Blowout hole The blowout hole is not particularly limited, but it is preferable to provide a plurality of blowout holes so as to be dispersed in the length direction of the heating housing. This is because it is easy to make the temperature of the heating chamber uniform.

[0017] (4) Suction hole The suction hole is not particularly limited, but it is preferably provided at a location away from the blowout hole in the length direction of the heating housing. This is because when the superheated steam that has been blown out from the blowout port into the heating chamber and spread throughout the heating chamber is sucked out, the utilization rate of heat is high.

[0018] (5) Superheated steam generation device The superheated steam generator is not particularly limited, but examples include steam boilers and the like.

[0019] (6) Others A conveying device can be provided to pass the food to be cooked through the heating chamber. The conveying device is not particularly limited, but examples include conveyors, rail-based devices, and the like. [Examples]

[0020] Embodiments of this invention will be described with reference to the drawings. Note that the structure, shape, number, etc., of each part of the embodiment are illustrative and can be modified as appropriate without departing from the spirit of the invention.

[0021] [Example 1] The cooking apparatus 1 of Example 1 shown in Figures 1 to 7 is, A heating chamber 2 extending in the horizontal direction (hereinafter sometimes referred to as the "length direction"), A conveyor 27 that passes the food to be cooked W into the heating chamber 2, A rectangular cylindrical heating housing 3 surrounds the heating chamber 2 from above, below, and both sides, A rectangular cylindrical first cover 5 surrounds the heating housing 3 from above, below, and both sides with a first gap 4 in between, A rectangular cylindrical second cover 7 surrounds the first cover 5 from above, below, and both sides with a second gap 6 in between, A superheated steam generator 30 that generates superheated steam, A cleaning tank 25 for cleaning the conveyor 27, It is equipped with a frame 24 that supports these components.

[0022] The heating housing 3, the first cover 5, and the second cover 7 are made of stainless steel and are formed as a single unit. In the longitudinal direction, this unit is formed by joining three sections: an upstream section a, a middle section b, and a downstream section c, via an intervening plate 8. In the vertical direction, it is formed by joining two sections: an upper section d and a lower section e.

[0023] The first gap 4 and the second gap 6 are each separated by an intervening plate 8 midway along their length, and their ends along their length are closed by end plates 9. The first gap 4 and the second gap 6 are continuous in the circumferential direction surrounding the heating chamber 2. The heating chamber 2 is continuous in the longitudinal direction. The cross-sectional area of ​​the heating chamber 2 is constant within the heating housing 3, but is narrowed at the location of the intervening plate 8 by the throttling holes 10 provided in the intervening plate 8.

[0024] In each of the upstream section a, the midstream section b, and the downstream section c, eight blowout holes 11 are provided on both side walls of the heating housing 3 above the conveyor 27 at approximately equal intervals along the length, and nine blowout holes 11 are provided below the conveyor 27 at approximately equal intervals along the length, connecting the heating chamber 2 and the first gap 4 to blow out superheated steam from the first gap 4 into the heating chamber 2. In this example, an inclined airflow guide plate 12 is provided at the end of each blowout hole 11 to guide the airflow of superheated steam at an angle.

[0025] In the upper wall, lower wall, and both side walls of the heating housing 3 in the upstream section a, the middle section b, and the downstream section c, slit-shaped first intake holes 13 are provided near the interposing plate 8 and near the end plate 9, connecting the heating chamber 2 and the first gap 4 to draw superheated steam from the heating chamber 2 into the first gap 4.

[0026] In each of the upstream section a, the middle section b, and the downstream section c, the upper wall and both side walls of the first cover 5 are provided with slit-shaped second suction holes 14 that connect the first gap 4 and the second gap 6 near the interfacing plate 8 and the end plate 9, respectively, to draw superheated steam from the first gap 4 to the second gap 6.

[0027] A conduit 15 is provided on the upper exterior of the second cover 7. One end of the conduit 15 opens to the upper wall of the first cover 5 via a heater 16 located in part of the second gap 6, and the other end of the conduit 15 opens to the upper wall of the second cover 7. Thus, the conduit 15 connects the first gap 4 and the second gap 6 separately from the second intake hole 14. A blower 17 is provided in the middle of the conduit 15. A sirocco fan is used as the blower 17.

[0028] On one side (the right side in Figure 1, the left side in Figure 2), an input housing 18 is attached to the end plate 9, and the input housing 18 has an input opening 19 and a table 20. An extraction housing 21 is attached to the other end plate 9 (left in Figure 1, right in Figure 2), and the extraction housing 21 has an extraction opening 22 and a table 23.

[0029] The second cover 7 is supported on a rectangular frame 24.

[0030] The cleaning tank 25 is installed on the frame 24 and stores cleaning fluid. The cleaning tank 25 has a roll brush 26 and a rotating device (not shown) for rotating the roll brush 26.

[0031] As shown in Figure 3 (and schematically shown by dashed lines in Figures 1, 4, and 5), the conveyor 27 consists of an endless belt 28, a plurality of sprockets 29, and a motor (not shown) that rotates the sprockets 29. The endless belt 28 consists of a pair of endless chains and a plurality of rods stretched and attached between the pair of endless chains, allowing superheated steam to pass between the rods. The endless belt 28 is hoisted on the plurality of sprockets 29 so that it enters the heating chamber 2 from the inlet 19, moves through the heating chamber 2 from right to left in Figure 1, exits from the outlet 22 and proceeds to the frame 24, passes through the washing tank 25 and touches the roll brush 26, and then returns to the inlet 19.

[0032] The superheated steam generator 30 is installed on the floor, slightly away from the frame 24. The superheated steam generated by the superheated steam generator 30 is supplied through the steam pipe 31 to the first gap 4 in each of the upstream section a, the midstream section b, and the downstream section c, as shown by the arrows and solid lines in Figure 6. The supplied superheated steam is circulated by the blower 17 in the following order (via the heater 16): first gap 4, blowout hole 11, heating chamber 2, first intake hole 13, first gap 4, second intake hole 14, second gap 6, pipeline 15, and (via the heater 16) first gap 4, as shown by the arrows and dashed lines in Figures 6 and 7.

[0033] The cooking device 1 configured as described above provides the following effects. (1) The superheated steam fills the rectangular cylindrical heating enclosure 3 that surrounds the heating chamber 2 from above, below, and both sides, resulting in high thermal efficiency. (2) By circulating the superheated steam as described above, the superheated steam not only fills the heating chamber 2, but also flows into the first gap 4 to keep the heating chamber 2 warm, and further flows into the second gap 6 to keep the first gap 4 warm, resulting in high thermal efficiency. (3) With the heating chamber 2 filled with superheated steam as described above, the food to be cooked W is introduced into the endless loop body from the input port 19 of the input housing 18, transported to and passed through the heating chamber 2 by the endless loop body, and efficiently heated and cooked by the superheated steam. (4) The food to be cooked W is transported to the removal housing 21 by an endless loop and removed from the outlet 22. (5) The endless loop body is then introduced into a cleaning tank 25 that stores cleaning water, where oil and dirt are floated by the cleaning water and removed by the rotating roller brush 26. (6) The endless loop then returns to the input housing 18, and the next food to be cooked W is inserted.

[0034] [Example 2] The cooking apparatus 41 of Embodiment 2 shown in Figure 8 differs from Embodiment 1 only in that the first cover 5 of Embodiment 1 is replaced with cover 5, the first gap 4 is replaced with gap 4, the first suction hole 13 is replaced with suction hole 13, the second cover 7 is omitted, and the superheated steam is circulated in the order of gap 4, blowout hole 11, heating chamber 2, suction hole 13, and gap 4. Otherwise, it is configured in the same way as Embodiment 1.

[0035] According to Example 2, although the superheated steam does not flow into the second gap to maintain the temperature of the first gap as in Example 1, the same effects and advantages as in Example 1 can be obtained otherwise.

[0036] Furthermore, this invention is not limited to the embodiments described above, and can be appropriately modified and implemented without departing from the spirit of the invention. [Explanation of Symbols]

[0037] 1 Cooking equipment 2 Heating chamber 3. Heating enclosure 4 1st gap 5. Cover 1 6 2nd gap 7. Second cover 8 Intermediate plate 9 End plate 10 aperture holes 11 outlet holes 12 Airflow guide plate 13 First suction hole 14. Second suction hole 15 Conduit 16 Heater 17 Blower 27 Conveyor 28 Endless belt 29 sprocket 30 Superheated steam generator 41 Cooking equipment

Claims

1. A heating chamber that extends horizontally, A cylindrical heating enclosure surrounds the heating chamber from above, below, and both sides, A cover that surrounds the heating enclosure from at least above and on both sides with a gap between them, It is equipped with a superheated steam generator that generates superheated steam, The heating housing is provided with an outlet hole and an intake hole that connect the heating chamber and the gap. A cooking apparatus characterized by being configured to circulate superheated steam in the following order: gap, outlet, heating chamber, intake hole, and gap.

2. A heating chamber that extends horizontally, A cylindrical heating enclosure surrounds the heating chamber from above, below, and both sides, A first cover surrounds the heating casing from at least above and on both sides with a first gap between them, A second cover surrounds the first cover from at least above and on both sides, with a second gap between them. It is equipped with a superheated steam generator that generates superheated steam, The heating housing is provided with an outlet hole and a first intake hole that connect the heating chamber and the first gap. The first cover is provided with a second suction hole that connects the first gap and the second gap. A separate conduit is provided to connect the first gap and the second gap, in addition to the second suction hole. A cooking apparatus characterized by being configured to circulate superheated steam in the following order: first gap, blowout hole, heating chamber, first intake hole, first gap, second intake hole, second gap, pipeline, and first gap.

3. The cooking apparatus according to claim 2, wherein the conduit is provided to pass outside the second cover.

4. The cooking apparatus according to claim 2 or 3, wherein a blower for circulating superheated steam is provided in the middle of the pipeline.

5. The cooking apparatus according to claim 4, wherein the blower is a sirocco fan.

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