JP7209210B2 - steam kettle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a steam cooker that has a jacket on the outside of an inner pot containing food, and that supplies steam into the jacket to heat the food.

Conventionally, as disclosed in Patent Document 1 below, an inner pot (pot main body 1) containing food and a jacket (heating chamber 3) provided outside the inner pot to which steam is supplied are provided. A steam kettle is known. Steam is supplied to the jacket of this steam cooker through a discharge port (10) provided at one end, and steam is discharged from a discharge port (11) provided at the other end. On the outer surface of the bottom of the inner pot, a plurality of fins (14) are formed in multiple rings at predetermined intervals on concentric circles from the center of the inner pot, and a required space is maintained between the tips of the fins and the inner surface of the jacket. installed as shown.

JP 2007-222272 A (paragraph 0007, FIGS. 1-4)

In the prior art, a required space is provided between the tips of the fins and the inner surface of the jacket, and a slit for steam circulation is provided along the steam outlet from the steam outlet to distribute the steam between the fins. It is dispersed in the air gaps and gaps between the tips of the fins and the inner surface of the jacket and is slowly diffused and distributed throughout the bottom of the inner pot over time. In other words, the fins diffuse the vapor into the jacket and do not partition the interior of the jacket to form fluid flow paths.

With such a configuration, air cannot be efficiently discharged from the inside of the jacket. That is, if the steam is diffused within the jacket, the air is also diffused, and the air cannot be collected at a specific location and efficiently discharged out of the jacket. In addition, air pockets may occur in the jacket due to uneven flow of steam. If air remains in the jacket, the heat transfer efficiency is poor and the food in the inner pot cannot be heated to the desired temperature.

Therefore, the problem to be solved by the present invention is to provide a steam kettle that can efficiently discharge air from the inside of the jacket and heat food as desired.

The present invention was made to solve the above problems, and the invention according to claim 1 comprises an inner pot in which food is stored and a jacket provided outside the inner pot to which steam is supplied. wherein the jacket is partitioned by a guide plate to form a fluid flow path, the jacket is provided with inlets and outlets for the fluid to the fluid flow path, and at least one of the inlets and outlets While steam is supplied from the steam supply means to the jacket, air can be discharged from at least one other through the air discharge means , and steam, cooling water, or compressed air can be switched and supplied to the jacket. a step of supplying steam into the jacket to discharge air from the air discharging means, a step of supplying steam into the jacket to heat the food in the inner pot, and passing compressed air into the jacket. A step of discharging steam from the jacket, a step of passing cooling water through the jacket to cool the food in the inner pot, and a step of passing compressed air through the jacket and discharging the cooling water from the jacket are sequentially performed. It is a steam kettle characterized by

According to the first aspect of the invention, the inside of the jacket is partitioned by the guide plate to form the fluid flow path. Steam is supplied to the fluid flow path from the steam supply means, and the air discharge means Air is expelled from By feeding the steam into the fluid flow path partitioned by the guide plate, the air in the jacket can be efficiently guided along the fluid flow path to the air discharging means and discharged to the outside of the jacket.
According to the first aspect of the invention, before the heating step, steam can be supplied into the jacket to remove air from the jacket. By removing the air from the jacket, the heat transfer efficiency can be improved and the food in the inner pot can be heated at the desired temperature in the subsequent heating process. After the heating process, compressed air can be passed through the jacket to expel steam from the jacket and to cool the inner pot and the jacket. Furthermore, as a cooling step, the food in the inner pot can be cooled by passing cooling water through the jacket. After the cooling process, by passing compressed air through the jacket and discharging the cooling water, it is possible to prevent water hammer during the next steam supply.

The invention according to claim 2 is characterized in that the air discharging means is an air bleeding valve that opens when air is discharged from the jacket, or a steam trap with an air discharging function. Item 1. A steam kettle according to item 1.

According to the second aspect of the invention, as the air discharging means, an air bleeding valve that opens when the air is discharged from the jacket or a steam trap with an air discharging function is used. In addition, the air can be efficiently discharged from the inside of the jacket.

In the invention according to claim 3, one or a plurality of the fluid flow paths are provided in the jacket, and each of the fluid flow paths has (i) an inlet/outlet provided in the middle of the steam supply means. (ii) the inlet/outlet provided at one end is connected to the steam supply means; 3. The steam kettle according to claim 1, wherein the air discharging means is provided at the entrance.

According to the third aspect of the invention, in each fluid channel, steam is supplied from the middle portion and air is discharged from both end portions, or steam is supplied from one end portion and air is discharged from the other end portion. be done. As a result, it is possible to more efficiently and reliably discharge the air from inside each fluid flow path and furthermore from inside the jacket.

According to a fourth aspect of the invention, the inlet and outlet are provided in the upper and lower portions of the jacket, and the steam supply means is connected to the inlet and outlet provided in the lower portion of the jacket, while the steam supply means is provided in the upper portion of the jacket. 4. The steam kettle according to any one of claims 1 to 3, wherein the air discharge means is provided at the entrance.

According to the fourth aspect of the invention, the steam is supplied from the bottom to the top inside the jacket. Therefore, the jacket is warmed from below, where steam is supplied, even if it is cold. As a result, the thermal stress in the upper portion of the jacket can be relaxed, and cracks can be prevented in the connection portion (welded portion) of the upper portion of the jacket with the inner pot.

The invention according to claim 5 is characterized in that cold water can be circulated in the fluid flow path in the jacket through the inlet and outlet provided in the jacket and between the cold water production device. 5. A steam kettle according to any one of 1 to 4.

According to the fifth aspect of the invention, the cold water production device can be connected to the steam kettle, and cold water can be circulated in the jacket between the cold water production device and the cold water production device. By passing cold water through the jacket (and through the fluid flow path partitioned by the guide plate), the food can be quickly cooled to a low temperature.

According to the steam kettle of the present invention, air can be efficiently discharged from the inside of the jacket, and food can be heated as desired.

It is a schematic block diagram which shows the steam kettle of Example 1 of this invention. FIG. 2 is a schematic front view of the steam kettle of FIG. 1 , partially cut away and shown in cross section, and partially omitted. 3 is a cross-sectional view taken along line III-III in FIG. 2; FIG. FIG. 2 is a schematic perspective view showing an example of a jacket used in the steam kettle of FIG. 1, showing a state in which guide plates for forming fluid flow paths are attached; It is a table|surface which shows the main process of the steam kettle of FIG. 1, and the opening-and-closing condition of each valve in each process. FIG. 5 is a schematic perspective view showing a modified example of the jacket shown in FIG. 4, showing a state in which guide plates for forming fluid flow paths are attached; It is a schematic front view which shows the steam kettle of Example 2 of this invention, and has abbreviate|omitted one part. FIG. 8 is a schematic cross-sectional view showing an example of a jacket used in the steam kettle of FIG. 7, showing a state in which guide plates for forming fluid flow paths are attached;

Specific embodiments of the present invention will now be described in detail with reference to the drawings.

1 to 3 are schematic diagrams showing a steam kettle 1 of Embodiment 1 of the present invention, FIG. 1 being a configuration diagram, FIG. 2 being a front view, and FIG. 3 being a sectional view taken along line III-III in FIG. In addition, in FIG. 2, a part is notched and it shows as a cross section, and in FIG.2 and FIG.3, a part is abbreviate|omitted and shown.

As shown in FIG. 1, the steam kettle 1 of the present embodiment includes an inner pot 2 containing food, a jacket 3 provided outside the inner pot 2, and a steam supply unit for supplying steam to the inside of the jacket 3. means 4, air discharging means 5 for discharging air from inside the jacket 3, drain discharging means 6 for discharging condensed water (drain) of the steam supplied into the jacket 3, and compression for supplying compressed air into the jacket 3. It comprises an air supply means 7, a water supply/drainage means 8 for supplying/discharging cooling water to/from the jacket 3, and a control means (not shown) for controlling the means 4-8.

The inner pot 2 is a bottomed hollow container that opens upward. The shape of the inner hook 2 is not particularly limited, but in this embodiment, as shown in FIG. is closed by a side wall 2b that bulges outward in the left-right direction in an arc shape, and a hopper 2c that opens upward is provided on the upper part of the peripheral side wall 2a except for the left and right ends. The inner pot 2 may have an upper opening that can be opened and closed with a lid member 9 .

FIG. 4 is a schematic perspective view showing an example of the jacket 3 used in the steam kettle 1 of this embodiment, showing a state in which the guide plate 11 for forming the fluid flow path 10 is attached.

The jacket 3 is provided with a jacket material 3X, and is provided so as to cover the area below the inner hook 2 as shown in FIGS. 1 to 4 . Steam, compressed air, or cooling water can be switched to be supplied into the jacket 3 (the space between the inner pot 2 and the jacket material 3X). For example, if steam is supplied inside the jacket 3, the food inside the inner pot 2 can be heated, and if cooling water is supplied inside the jacket 3, the food inside the inner pot 2 can be cooled. After steam is supplied into the jacket 3 to heat the food, by passing compressed air through the jacket 3, the steam can be discharged from the jacket 3 and the inner pot 2 and the jacket 3 can be cooled. Furthermore, after cooling the food by supplying cooling water into the jacket 3, by passing compressed air through the jacket 3, the cooling water can be discharged from the jacket 3, and water hammer can be applied during the next steam supply (steam supply). can be prevented.

In this embodiment, the jacket 3 (more specifically, the jacket material 3X) is arranged above and below the inner hook 2 so as to cover the lower regions of the peripheral side wall 2a and the left and right side walls 2b of the sideways substantially cylindrical inner hook 2. It is provided in the lower area from the middle part of the direction. In the illustrated example, the jacket 3 has a laterally-oriented substantially semi-cylindrical (substantially lower-half shape of a laterally-oriented cylinder) peripheral side wall 3a, and the left and right openings thereof are closed by substantially semi-disc-shaped side walls 3b, A substantially semicircular notch hole 3c is formed in the central portion of the side wall 3b (position along the axis of the horizontal cylindrical body).

Although the details will be described later, the jacket 3 is partitioned by a guide plate 11 to form a fluid flow path 10 . The guide plates 11 are preferably provided not only on the bottom of the jacket 3 but also on the sides and/or top of the jacket 3 . Note that the upper portion of the jacket 3 includes one or both ends in the circumferential direction of the peripheral side wall 3a of the jacket 3 (in other words, the upper portion of one or both front and rear ends of the jacket 3) and one or both ends in the left-right direction. Any one or more (typically both left and right ends or both front and rear ends) are included.

Each guide plate 11 is formed of a flat plate in this embodiment, but the flat plate may be formed with appropriate irregularities. Each guide plate 11 is provided to bridge the outer surface of the inner pot 2 (peripheral side wall 2a or side wall 2b of the inner pot 2) and the inner surface of the jacket 3 (peripheral side wall 3a or side wall 3b of the jacket material 3X). The outer end of the plate 11 may be formed with a drain discharge hole 11a or a notch. As will be described later, when intermittent welding (preferably zigzag welding) is performed between the outer edge of the guide plate 11 and the inner surface of the jacket 3, even if there is a gap between the welded parts, the gap should be closed. It can also be used as a gap for drain discharge.

The fluid flow path 10 is preferably provided so as to meander through the jacket 3 . In this case, the fluid flow path 10 is preferably provided to extend not only to the bottom of the jacket 3 but also to the sides and/or top of the jacket 3 so as to meander through the inside of the jacket 3 (preferably the entire area). Thereby, heat transfer performance can be improved.

One or more fluid channels 10 are provided within the jacket 3 . In each fluid channel 10, the fluid may flow from one end to the other end, or may flow from the middle to both ends.

In this embodiment, one fluid channel 10 is formed so as to meander through the entire area inside the jacket 3, and inlets and outlets for the fluid are provided at both ends and a middle portion of the fluid channel 10. As shown in FIG. Specifically, in the upper part of the jacket 3, both ends of the fluid flow path 10 are provided with upper entrances and exits (first upper opening 10a, second upper opening 10b) for the fluid, while in the lower part of the jacket 3, the fluid flow A lower entrance/exit for fluid (first lower opening 10c, second lower opening 10d) is provided in the central portion of the channel 10 .

The inner pot 2 with the jacket 3 is rotatable by a predetermined angle with the lid member 9 opened so that the upper opening is tilted forward. Therefore, the inner pot 2 with the jacket 3 is rotatably supported while floating from the pedestal 12 . At that time, the left and right ends of the inner hook 2 are supported by the side frames 13 and the drive box 14 provided on the left and right sides of the base 12 . Specifically, the left and right side walls 2 b of the inner hook 2 are provided with a stepped rotary shaft portion 15 extending laterally outward at the central portion thereof. The upper end portion is rotatably supported by a bearing 16 , and the right rotating shaft portion 15 is rotatably supported by a bearing (not shown) within the drive box 14 . Note that FIG. 1 shows only the left rotating shaft portion 15 . In addition, although the inner hook 2 and the rotating shaft portion 15 are shown separately in FIG. 1, they are actually integrated.

An inner pot 2 with a jacket 3 is rotatable by a predetermined angle with air discharging means 5, drain discharging means 6, and the like. More specifically, each configuration shown on the right side of the rotating shaft portion 15 in FIG. 1 can rotate integrally with the inner hook 2 with the jacket 3 .

The inner pot 2 is provided with a food stirring device 17 as desired. In this embodiment, as shown in FIGS. 2 and 3, a stirring shaft 18 is provided so as to bridge the left and right sides of the inner pot 2, and an arm 19 extending radially outward is attached to the stirring shaft 18. A stirring blade 20 is provided. The stirring shaft 18 is arranged along the axis of the inner pot 2 and is rotatably supported by bearings 21 provided outside the left and right side walls 2b of the inner pot 2 . The stirring shaft 18 has an extension portion extending to the right side of the right bearing 21 , and the extension portion is connected to a drive device (not shown) inside the drive box 14 . A drive in the drive box 14 makes it possible to rotate the stirring shaft 18 and thus the stirring blades 20 . The drive box 14 is provided with various operation buttons 22 and a touch panel 23 as well as a controller (not shown).

Of the left and right rotating shaft portions 15 of the inner pot 2, the right rotating shaft portion 15 is cylindrical, and a stirring shaft 18 is passed through the hollow hole thereof. The rotating shaft portion 15 and the stirring shaft 18 are connected to a drive device inside the drive box 14 . On the other hand, the rotating shaft portion 15 on the left side is formed in a cylindrical shape on the inner pot 2 side, and the end portion of the stirring shaft 18 is supported in the hollow hole via a bearing 21 (FIG. 2). Two flow paths are formed in the left rotating shaft portion 15 . In FIG. 1, the left rotating shaft portion has a double-tube structure, and an inner channel 24 and an outer channel 25 are formed.

Steam supply means 4 supplies steam into the jacket 3 . Specifically, the steam supply means 4 supplies steam from a steam supply port (boiler connection port) to a steam supply path 26, a rotary joint (knuckle joint) (not shown), an inner flow path 24 of the rotating shaft portion 15, and a steam supply path 26. Through the first supply path 27 in order, it is possible to supply the inside of the jacket 3 from the first lower opening 10c. A steam supply valve 28 is provided in the steam supply path 26 to the rotating shaft portion 15 . On the other hand, a boiler steam supply valve 29 is provided in a first supply passage 27 from the rotating shaft portion 15 to the jacket 3 .

The air discharging means 5 discharges air from the inside of the jacket 3 as the steam is supplied into the jacket 3 by the steam supplying means 4 (or during heating of the food by the steam supply). Specifically, the air discharging means 5 discharges the air from inside the jacket 3 from the first upper port 10a through the first air vent valve 30 to the first discharge passage 31, and also from the second upper port 10b. It can be led out to the second discharge passage 33 via the second air vent valve 32 . Although the details will be described later, the first air vent valve 30 and the second air vent valve 32 are opened when air is removed from the jacket 3 .

The first discharge passage 31 from the first upper port 10a and the second discharge passage 33 from the second upper port 10b are common on the rotating shaft portion 15 side (downstream of the air vent valves 30 and 32). A conduit 34 is provided. This common pipe line 34 is communicated with the third discharge line 35 via the outer flow path 25 of the rotating shaft portion 15 . The third discharge path 35 is provided with a drainage switching valve 36 consisting of a three-way valve, and the fluid from the third discharge path 35 is discharged to an exhaust drainage path 37 or via a cold water return path 38, which will be described later. It is possible to switch whether to return to the cold water production device. A check valve 39 is provided in the exhaust drainage path 37 , and a check valve 40 is provided in the cold water return path 38 . When air is removed from the jacket 3 by the air discharge means 5, the third discharge path 35 and the exhaust drainage path 37 are communicated by the drainage switching valve 36, and the exhaust from the jacket 3 is discharged to the exhaust drainage path 37. .

The drain discharge means 6 discharges condensed water (drain) of the steam supplied into the jacket 3 . Specifically, the drain discharge means 6 can lead the drain from the inside of the jacket 3 to the drain discharge passage 41 through the second lower port 10d. A steam trap 42 and a drain valve 43 are provided in the drain discharge passage 41 . The drain discharge passage 41 from the second lower port 10 d is led out to the third discharge passage 35 via the outer flow passage 25 of the rotating shaft portion 15 . When drain is discharged from the jacket 3 by the drain discharge means 6, the drain valve 43 is opened, and the drain switch valve 36 communicates the third discharge passage 35 and the exhaust discharge passage 37, so that the drain from the jacket 3 is It is discharged to the exhaust drainage channel 37 .

Compressed air supply means 7 supplies compressed air into the jacket 3 . Specifically, the compressed air supply means 7 supplies compressed air from an air supply port (compressor connection port) to the compressed air path 44, a rotary joint (not shown), the inner flow path 24 of the rotary shaft portion 15, and the second Via one supply path 27, it is possible to supply into the jacket 3 from the first lower opening 10c. An air supply valve 45 is provided in the compressed air path 44 to the rotating shaft portion 15 . The steam supply path 26 downstream of the steam supply valve 28 , the compressed air path 44 downstream of the air supply valve 45 , and the cold water supply path 47 downstream of the cold water supply valve 46 to be described later are connected to the rotating shaft portion 15 . A common conduit 48 is formed on the side.

Compressed air supplied from the first lower port 10c flows to both ends of the fluid channel 10 in the jacket 3 and is discharged from the first upper port 10a and the second upper port 10b through the air discharge means 5. be done. That is, the compressed air from inside the jacket 3 is discharged from the first upper port 10a through the first air bleeding valve 30 to the first discharge passage 31, and also flows through the second air bleeding valve 32 from the second upper port 10b. It is led out to the second discharge passage 33 through the. The compressed air from the first discharge passage 31 and the second discharge passage 33 is discharged from the third discharge passage 35 to the exhaust drainage passage 37 via the outer flow path 25 of the rotating shaft portion 15 .

The water supply/discharge means 8 supplies/discharges cooling water to/from the jacket 3 . In this embodiment, cold water can be circulated in the jacket 3 by a circulation pump with a cold water production device (chiller) (not shown). The chilled water production device is equipped with a refrigerator, and after the water from the chilled water tank is cooled through the evaporator of the chiller, it is supplied into the jacket 3 through the chilled water feed passage 47 and through the chilled water return passage 38. returned to the cold water tank. A cold water supply valve 46 is provided in the cold water feed path 47 . The piping from the cold water feed path 47 to the jacket 3 and the piping from the jacket 3 to the cold water return path 38 are configured as follows.

That is, the first supply passage 27 from the rotating shaft portion 15 to the boiler body steam valve 29 and the first discharge passage 31 from the first upper port 10a to the first air bleeding valve 30 are connected by the cold water inlet passage 49. A cold water inlet valve 50 is provided in the cold water inlet passage 49 . In addition, the second discharge passage 33 from the second upper port 10b to the second air vent valve 32 and the drain discharge passage 41 from the drain valve 43 to the rotating shaft portion 15 are connected by a cold water outlet passage 51, A cold water outlet valve 52 is provided in the cold water outlet path 51 . In other words, the inner flow path 24 of the rotating shaft portion 15 and the first upper opening 10a of the jacket 3 are connected via the cold water inlet passage 49, while the second upper opening 10b of the jacket 3 and the rotating shaft portion 15 are connected. It is connected to the outer channel 25 via a cold water outlet channel 51 . A cold water inlet valve 50 is provided in the cold water inlet passage 49 , and a cold water outlet valve 52 is provided in the cold water outlet passage 51 .

Although the details will be described later, cold water from the cold water tank is supplied into the jacket 3 via a cold water supply path 47 and a cold water inlet path 49, and is supplied to one end of the fluid flow path 10 in the jacket 3 (first upper port 10a). After flowing to the other end (second upper port 10b), it is returned to the cold water tank via the cold water outlet path 51 and the cold water return path 38.

The steam kettle 1 is provided with a pressure sensor 53 for detecting the pressure inside the jacket 3 and, if desired, a temperature sensor (not shown) for detecting the temperature inside the inner kettle 2 . Besides being provided in the jacket 3, the pressure sensor 53 may be provided in the first supply passage 27 or the like between the boiler steam supply valve 29 and the jacket 3 as shown in FIG.

The control means is a controller (not shown) that controls the means 4 to 8 based on detection signals from the sensors, elapsed time, and the like. Specifically, a driving device that rotates the inner pot 2, the stirring shaft 18, etc., a steam supply valve 28, a boiler body steam supply valve 29, a first air release valve 30, a second air release valve 32, a drainage switching valve 36, The drain valve 43, the air supply valve 45, the cold water supply valve 46, the cold water inlet valve 50, the cold water outlet valve 52, as well as the pressure sensor 53 and the like are connected to the controller. As will be described later, the controller is enabled to heat-cook the food in the inner pot 2 and then cool it according to a predetermined procedure (program).

Next, the jacket 3 of the steam kettle 1 of this embodiment will be described more specifically.
As described above, the jacket 3 is provided with a side wall 3a having a substantially lateral semi-cylindrical shape (substantially lower half shape of a sideways cylindrical body), and the left and right openings thereof are closed with a substantially semi-disk-shaped side wall 3b. A substantially semicircular notch hole 3c is formed in the central portion of the side wall 3b (position along the axis of the horizontal cylindrical body). A plurality of guide plates 11 extending in the left-right direction are provided in the jacket 3 so as to be spaced apart in the front and rear direction (in the illustrated example, spaced apart in the circumferential direction of the inner hook 2 and the peripheral side wall of the jacket 3). A plurality of flow paths extending in the left-right direction are formed, and communication ports 11b for connecting adjacent flow paths are alternately provided on the left and right upper portions of the left and right sides of the jacket 3, thereby forming one fluid flow path. 10 is formed.

More specifically, in the present embodiment, in the side view shown in FIG. 3 (the state in which the jacket 3 is attached to the inner hook 2), the peripheral side wall 2a of the inner hook 2 and the peripheral side wall 3a of the jacket 3 are substantially concentric. placed in A plurality of guide plates 11 extending inward (extending radially inward in the illustrated example) are provided on the peripheral side wall 3a of the jacket 3 at approximately equal intervals in the circumferential direction. Each guide plate 11 is provided extending in the lateral direction of the jacket 3, as shown in FIGS. At this time, it is formed in a substantially U-shape so as to fill the gap between the outer surface of the inner hook 2 and the inner surface of the jacket 3 (the gap between the peripheral side walls 2a and 3a and the gap between the side walls 2b and 3b). That is, each guide plate 11 is formed of an elongated, substantially rectangular body piece 11c extending in the left-right direction, and extension pieces 11d connected to both left and right ends thereof. The main body piece 11c and the extension piece 11d have their inner edges in contact with the outer surfaces (peripheral side wall 2a and side wall 2b) of the inner hook 2, and their outer edges are in contact with the inner surfaces of the jacket 3 (peripheral side wall 3a and side wall 3b). ) is arranged to abut on the

However, one side of each of the left and right extension pieces 11d is formed with a communication port 11b by notching the tip portion (upper end portion) thereof. are arranged alternately from left to right. That is, in FIG. 4, the frontmost guide plate 11 has a cutout in the upper left portion to form a communication port 11b, and the second guide plate 11 from the front has a cutout in the upper right portion. A communication port 11b is formed on the third guide plate 11 from the front, and the communication port 11b is formed by notching the upper left portion of the guide plate 11 from the front. 11b are formed.

In this embodiment, the outer edge of each guide plate 11 is welded and fixed to the jacket 3 . At this time, the outer edge of each guide plate 11 is preferably intermittently welded to the inner surface of the jacket 3 (that is, the welded portions of the outer edge of the guide plate 11 are spaced apart). More preferably, welding is intermittently performed along the longitudinal direction of the guide plate 11 on the front surface (the surface arranged forward) and the back surface (the surface arranged rearward) of each guide plate 11 . Moreover, it is preferable that the front-side welded portions and the back-side welded portions are arranged in a staggered manner. That is, the front-side welded portions are provided at intervals along the outer edge of the guide plate 11, and the back-side welded portions are provided corresponding to the non-welded portions between the adjacent front-side welded portions. The front-side welded portion and the back-side welded portion are preferably spaced apart in the longitudinal direction of the guide plate 11 . That is, even when the front-side welded portion and the back-side welded portion are viewed as a whole, the welded portions are intermittently arranged on the outer edge side of the guide plate 11 . Distortion during welding can be suppressed by welding intermittently (preferably in a zigzag pattern). Further, as will be described later, even if a gap is formed between the outer edge of the guide plate 11 and the inner surface of the jacket 3, the gap can be used as a gap for drain discharge.

The jacket 3 provided with the guide plate 11 in this manner is attached so as to cover the area below the inner hook 2 . At this time, the notch holes 3c of the left and right side walls 3b of the jacket 3 are fitted into the lower half of the rotating shaft portion 15 of the inner hook 2, and the jacket 3 is welded to the rotating shaft portion 15 along the notch holes 3c. In addition, the upper ends of the peripheral side wall 3a and the left and right side walls 3b (locations other than the cutout holes 3c) of the jacket 3 are fixed by welding to the inner hook 2 or a closing plate (flange) provided therein (Fig. 3 ). As a result, a substantially semi-cylindrical hollow portion is provided in the substantially lower half portion of the inner pot 2 , and the inside of the hollow portion is partitioned by the guide plate 11 to form a meandering fluid flow path 10 .

When the jacket 3 is attached to the inner hook 2, the inner edges of the guide plates 11 (the upper side of the body piece 11c and the inner sides of the left and right extended pieces 11d) abut or approach the outer surface of the inner hook 2 ( For example, the left and right sides of the extension piece 11d (the side opposite to the communication port 11b) are brought into contact with or close to the outer peripheral surface of the rotating shaft portion 15 of the inner hook 2. . By providing the guide plate 11 , not only can a desired fluid flow path 10 be formed in the jacket 3 , but also heat transfer from the jacket 3 to the inner pot 2 can be promoted. Further, in this embodiment, the guide plate 11 can be easily installed in the jacket 3 by providing the guide plate 11 in the shape of a flat plate along the axial direction of the inner hook 2 .

Here, after the guide plates 11 are provided inside the jacket 3, the jacket 3 with the guide plates 11 attached is attached to the inner hook 2. The guide plate 11 may be welded to the outer surface of the inner hook 2, and the jacket 3 may be provided so as to cover the inner hook 2 with the guide plate 11 attached. Even when the guide plate 11 is welded to the inner hook 2, it is preferable to weld the guide plate 11 to the jacket 3 intermittently, preferably in a zigzag pattern alternately. With the jacket 3 attached to the inner hook 2 with the guide plate 11 , the outer edge of the guide plate 11 is brought into contact with or close to the inner surface of the jacket 3 . Even if a gap is formed between the outer edge of the guide plate 11 and the inner surface of the jacket 3, the gap can be used as a gap for drain discharge.

As described above, the jacket 3 is provided with inlets and outlets for fluid at a plurality of locations. In this embodiment, the upper portion of the jacket 3 is provided with a first upper port 10a and a second upper port 10b, and the lower portion of the jacket 3 is provided with a first lower port 10c and a second lower port 10d. The first upper opening 10a and the second upper opening 10b are provided at both ends of the fluid channel 10 partitioned by the guide plate 11, and the first lower opening 10c and the second lower opening 10d are provided at the center thereof. is provided. Further, in this embodiment, the first upper opening 10a is arranged at the rear portion (back side) of the jacket 3, and the second upper opening 10b is arranged at the front portion (front side) of the jacket 3. As shown in FIG.

By the way, each guide plate 11 has a gap (for example, intermittent welding) for drain discharge between the outer edge of the guide plate 11 and the inner surface of the jacket 3, especially for the main body piece 11c extending in the left-right direction. A gap between the parts) may be provided, or the outer end of the guide plate 11 may be formed with a hole 11a or a notch for drain discharge. In the illustrated example, a plurality of holes 11a are formed along the longitudinal direction of the body piece 11c at the outer end of the body piece 11c. During the supply of steam into the jacket 3, on the left and right sides of the jacket 3, along the side walls 2b and 3b of the inner pot 2 and the jacket 3, in addition to the extension pieces 11d of the guide plate 11, the drain drains downward. can flow. On the other hand, in the peripheral wall 3a of the jacket 3, the drain can flow to the lowermost portion (second lower opening 10d) of the jacket 3 through the gap, the hole 11a, or the notch provided at the outer end of the body piece 11c. can.

Next, a specific example of the method of operating the steam kettle 1 of this embodiment will be described.
FIG. 5 is a table showing the main processes of the steam kettle 1 of this embodiment and the opening/closing status of each valve in each process. In the figure, the ◯ mark indicates the open state of the valve, and the x mark indicates the closed state of the valve.

Before starting operation, at least the steam supply valve 28, the air supply valve 45, and the cold water supply valve 46 are closed, and the driving device for the inner pot 2 and the stirring shaft 18 is stopped. Then, when the start of operation is instructed, such as by pressing a predetermined start button, the controller typically sequentially executes the air removal process and the heating process. Preferably, the air removal step, heating step, first air blowing step, cooling step, and second air blowing step are sequentially performed. However, the operation process is not limited to the following specific example, such as omitting the first air blow process.

Food is put into the inner pot 2 before starting the operation, or at the latest before starting the heating process. After the food is put into the inner pot 2 , the upper opening of the inner pot 2 is closed with the lid member 9 .

In the air removal step, the air inside the jacket 3 is removed by the steam supply means 4 and the air discharge means 5 . Specifically, the steam supply valve 28 is opened while the cold water supply valve 46 and the air supply valve 45 are kept closed. At this time, the cold water inlet valve 50 and the cold water outlet valve 52 are closed, and the boiler steam supply valve 29, the air vent valves 30 and 32 and the drain valve 43 are opened. Also, the drainage switching valve 36 is in a state in which the third exhaust passage 35 is communicated with the exhaust drainage passage 37 .

As a result, the steam (saturated steam having a pressure higher than atmospheric pressure) from the steam supply path 26 passes through the inner flow path 24 of the rotating shaft portion 15 and the first supply path 27, and enters the jacket 3 from the first lower port 10c. supplied to The steam supplied into the jacket 3 from the first lower port 10c (the middle portion of the fluid channel 10) flows from the first lower port 10c to the upper ports 10a and 10b (both ends of the fluid channel 10). . By flowing steam from the first lower port 10c to the respective upper ports 10a and 10b along the fluid channel 10, the air inside the jacket 3 (inside the fluid channel 10) is released from the respective upper ports 10a and 10b. It is pushed out to the discharge passages 31 and 33 . In this way, the air in the jacket 3 is discharged from the first upper port 10a to the first discharge passage 31 and from the second upper port 10b to the second discharge passage 33, and each discharged air is It is discharged to the exhaust drainage path 37 via the common conduit 34 , the outer flow path 25 of the rotating shaft portion 15 , and the third discharge path 35 . When the set exhaust time elapses from the start of the air removal process, the air release valves 30 and 32 are closed, and the process proceeds to the next process.

In the heating step, steam is supplied into the jacket 3 by the steam supply means 4 to heat the food in the inner pot 2 . Specifically, the steam supply valve 28 is continuously opened to supply steam into the jacket 3, and the inside of the jacket 3 is set to the set heating pressure (since the inside of the jacket 3 is filled with saturated steam, it can also be called the set heating temperature). After that, the food in the inner pot 2 is heated by maintaining that state. For example, the opening/closing or opening degree of the can body steaming valve 29 may be adjusted so as to maintain the pressure detected by the pressure sensor 53 at the set heating pressure (the pressure at which the target heating temperature of the food is the saturation temperature).

During the heating process (or the air removing process), steam is supplied into the jacket 3 from the lower part of the jacket 3 (moreover, from the central part of the fluid channel 10). Therefore, the temperature rise starts from the lower part of the jacket 3, the thermal stress in the upper part of the jacket 3 (thermal stress due to the temperature difference between the jacket 3 at room temperature and the steam) is relieved, and the connection part with the inner pot 2 in the upper part of the jacket 3 It is possible to prevent cracks in (welded parts).

In the heating process, the air vent valves 30 and 32 may be opened appropriately (for example, based on the temperature of the primary side of each air vent valve 30 and 32 or at predetermined time intervals). Even if air remains in the fluid flow path 10, the steam moves from the steam supply side (first lower port 10c) toward the outlet side (each upper port 10a, 10b) with condensation in the fluid flow channel 10, and moves together with the steam. Since the residual air moves to the outlet side, the residual air can be discharged from the discharge passages 31 and 33 . For example, each of the air vent valves 30 and 32 is controlled to open when the temperature on the primary side is lower than the first set temperature and to close when the second set temperature (> the first set temperature) is exceeded. be.

By keeping the drain valve 43 open during the heating process, the condensed water (drain) of the steam supplied into the jacket 3 flows through the steam trap 42 into the drain discharge path 41 and the outer flow path of the rotating shaft portion 15. 25, through the third discharge channel 35, is discharged to the exhaust drainage channel 37;

The steam kettle 1 of this embodiment includes a food stirring device 17 in the inner kettle 2 . That is, the steam kettle 1 is configured as a steam kneader. Therefore, the food can be stirred by the stirring device 17 while the food is heated by steaming the food into the jacket 3 . Such stirring of food can be performed not only in the heating process but also in the cooling process, and can also be performed from the heating process to the end of the cooling process via the first air blowing process.

In any case, when a predetermined termination condition is satisfied during the heating process, the steam supply valve 28 is closed to stop the supply of steam into the jacket 3, and the process proceeds to the next process.

In the first air blowing step, compressed air is circulated in the jacket 3 by the compressed air supply means 7 . Specifically, with the steam supply valve 28, the cold water supply valve 46, the cold water inlet valve 50 and the cold water outlet valve 52 closed, the air supply valve 45, the boiler body steam valve 29, the air vent valves 30, 32 and The drain valve 43 is opened. Thereby, the compressed air from the compressed air passage 44 is supplied into the jacket 3 from the first lower port 10c via the inner passage 24 of the rotating shaft portion 15 and the first supply passage 27 . Compressed air supplied into the jacket 3 from the first lower port 10c (the middle portion of the fluid channel 10) flows from the first lower port 10c to the upper ports 10a and 10b (both ends of the fluid channel 10). It is led out and discharged to an exhaust drainage channel 37 via the discharge channels 31 and 33 , the common conduit 34 , the outer channel 25 of the rotating shaft portion 15 and the third discharge channel 35 .

By the first air blowing step, residual steam in the jacket 3 can be discharged, and the jacket 3 and the inner pot 2 can be cooled. After executing the first air blowing process for the set blowing time, the air supply valve 45, the boiler steam supply valve 29 and the air vent valves 30 and 32 are closed, and the process proceeds to the next process.

In the cooling process, cooling water is passed through the jacket 3 by the water supply/drainage means 8 to cool the food in the inner pot 2 . Specifically, with the drain valve 43 closed, the cold water supply valve 46, the cold water inlet valve 50, and the cold water outlet valve 52 are opened to allow water to flow through the jacket 3 to cool the food in the inner pot 2. . Also, the drain switching valve 36 is switched to a position that allows the third drain passage 35 to communicate with the cold water return passage 38 . As described above, the base end of the cold water supply path 47 and the tip of the cold water return path 38 are connected to the cold water production device to circulate the cold water between the jacket 3 and the cold water production device.

Specifically, the cold water from the cold water production device is supplied into the jacket 3 from the first upper port 10 a via the cold water feed path 47 , the inner flow path 24 of the rotating shaft portion 15 , and the cold water inlet path 49 . Cold water supplied into the jacket 3 from the first upper port 10a (one end of the fluid channel 10) flows from the first upper port 10a to the second upper port 10b (the other end of the fluid channel 10). Cold water from the second upper port 10b is returned to the cold water production device via the cold water outlet passage 51, the outer passage 25 of the rotating shaft portion 15, the third discharge passage 35, and the cold water return passage .

According to the cooling step, the cooling water is supplied from the first upper port 10a, which is one end of the fluid channel 10, and is discharged from the second upper port 10b, which is the other end of the fluid channel 10. By flowing cooling water along the fluid flow path 10, the food in the inner pot 2 can be cooled evenly and reliably. That is, since the fluid flow path 10 is formed meandering through the entire inside of the jacket 3 (the lower area of the inner pot 2), the cooling water is caused to flow inside the jacket 3 by flowing the cooling water from one end to the other end. There is no part where the liquid remains (in other words, there is no short pass of the cooling water), and the food can be cooled evenly and quickly.

In the second air blowing process, compressed air is circulated inside the jacket 3 in the same manner as in the first air blowing process. Specifically, with the steam supply valve 28, the cold water supply valve 46, the cold water inlet valve 50 and the cold water outlet valve 52 closed, the air supply valve 45, the boiler body steam valve 29, the air vent valves 30, 32 and The drain valve 43 is opened. As a result, the compressed air from the compressed air path 44 is supplied into the jacket 3 from the first lower opening 10 c via the inner flow path 24 of the rotating shaft portion 15 and the first supply path 27 . Compressed air supplied into the jacket 3 from the first lower port 10c (the middle portion of the fluid channel 10) flows from the first lower port 10c to the upper ports 10a and 10b (both ends of the fluid channel 10). It is led out and discharged to an exhaust drainage channel 37 via the discharge channels 31 and 33 , the common conduit 34 , the outer channel 25 of the rotating shaft portion 15 and the third discharge channel 35 .

By the second air blowing process, residual water in the jacket 3 can be discharged, and water hammer can be prevented during the next steam supply (air removing process or heating process). After executing the second air blow process for the set blow time, at least the air supply valve 45 is closed.

In this way, the food in the inner pot 2 can be heated and cooled. After the series of steps are completed, the inner pot 2 can be rotated to direct the opening downward, so that the food can be easily discharged from the inner pot 2 .

Next, a modification of the steam kettle of this embodiment will be described.
FIG. 6 is a schematic perspective view showing a modification of the jacket 3 shown in FIG. 4, showing a state in which a guide plate 11 for forming the fluid flow path 10 is attached.

In the above embodiment, when the jacket 3 is attached to the inner hook 2, the guide plates 11 are provided in the jacket 3 substantially radially when viewed from the side, and each guide plate 11 is provided along the horizontal direction when viewed from the front. was taken. On the other hand, in this modification, as shown in FIG. 6, guide plates 11 are provided in the jacket 3 so as to be separated from each other at approximately equal intervals in the front view. , is formed in a substantially semicircular arc shape in a side view.

At this time, each guide plate 11 is provided so as to fill the gap between the outer surface of the inner hook 2 and the inner surface of the jacket 3 (the gap between the peripheral side walls 2a and 3a). That is, each guide plate 11 is provided so that the inner peripheral edge abuts or approaches the outer surface (peripheral side wall 2a) of the inner hook 2 and the outer peripheral edge abuts or approaches the inner surface (peripheral side wall 3a) of the jacket 3. . As a result, a plurality of flow paths are formed along the circumferential direction of the jacket 3 between the adjacent guide plates 11 or between the guide plate 11 and the side wall 3b. However, the fluid flow path 10 is formed by alternately providing the communication ports 11b for connecting the adjacent flow paths in the front and rear upper portions of the jacket 3 . That is, in FIG. 6, the leftmost guide plate 11 has its front upper portion notched to form a communication port 11b, and the second guide plate 11 from the left has its rear upper portion notched. The third guide plate 11 from the left has a communication port 11b formed by notching its front upper portion, and so on. is formed.

In this manner, a meandering fluid flow path 10 is formed in the jacket 3. At both ends of the fluid flow path 10, a first upper opening 10a and a second upper While the port 10b is provided, a first lower port 10c and a second lower port 10d are provided in the central portion (lower portion of the jacket 3) of the fluid channel 10, although not shown, in the same manner as in the above embodiment. . The jacket 3 of this modified example is also provided in the inner pot 2 in the same manner as in the above-described embodiment, and the configuration and control of the steam kettle 1 configured in this way are the same as in the above-described embodiment, so description thereof will be omitted. .

Also in the case of this modified example, in order to facilitate drain discharge, a gap is provided between the outer edge of the guide plate 11 and the inner surface of the jacket 3, or a hole or A notch may be provided (not shown), but these gaps, holes or notches may be provided only in a portion of the guide plate 11 corresponding to the bottom portion (near the lowest portion) of the jacket 3 .

FIG. 7 is a schematic front view showing the steam kettle 1 of Example 2 of the present invention. FIG. 8 is a schematic cross-sectional view showing an example of the jacket 3 used in the steam kettle 1 of the second embodiment, showing a state in which the guide plate 11 for forming the fluid flow path 10 is attached. .

The steam kettle 1 of the second embodiment is also basically the same as that of the first embodiment. Therefore, in the following description, the points of difference between the two will be mainly described, and the same reference numerals will be given to the corresponding portions.

The steam kettle 1 of Example 2 differs from that of Example 1 in the shapes of the inner pot 2 and the jacket 3 . In the second embodiment, the inner pot 2 has a vertically oriented substantially cylindrical shape with its axis extending in the vertical direction. It is formed with an opening upward. In the second embodiment as well, the upper opening of the inner pot 2 can be opened and closed by the lid member 9 . Further, the inner pot 2 is configured to be rotatable by a predetermined angle so that the upper opening is tilted forward with the lid member 9 opened. In addition, the peripheral wall of the vertically-oriented substantially cylindrical inner pot 2 may be formed into an inclined surface that decreases in diameter as it goes downward.

The jacket 3 is provided so as to cover the lower region (at least the bottom wall 2d) of the inner pot 2, and can supply steam, compressed air, or cooling water by switching, as in the first embodiment. In this embodiment, the jacket 3 (more specifically, the jacket material 3X) has a vertically-oriented substantially cylindrical peripheral side wall 3a, the lower end portion of which bulges downward in a substantially arcuate shape (that is, a substantially hemispherical shape). ) is closed by the bottom wall 3d. A substantially semicircular notch hole 3c is formed in the upper portion of the peripheral side wall 3a of the jacket 3 along the radial direction (along the lateral direction in FIG. 8).

Inside the jacket 3, a fluid flow path 10 is formed by being partitioned by a guide plate 11, as in the first embodiment. In the second embodiment, the guide plates 11 are provided substantially radially when viewed from the side, and each guide plate 11 is provided along the horizontal direction when viewed from the front. At this time, each guide plate 11 bridges the outer surface of the inner pot 2 (peripheral side wall or bottom wall 2d of the inner pot 2) and the inner surface of the jacket 3 (peripheral side wall 3a or bottom wall 3d of the jacket material 3X). be provided. Further, each guide plate 11 has a communication port 11b formed by cutting out the upper end portion on one of the left and right sides thereof. When each guide plate 11 is viewed from the front to the rear of the jacket 3, the communication ports 11b are alternately arranged on the left and right sides. As a result, a meandering fluid channel 10 is formed in the jacket 3, and a first upper port 10a and a second upper port 10b are provided at both ends of the fluid channel 10 (upper portion of the jacket 3). , a first lower opening 10c and a second lower opening 10d are provided in the central portion of the fluid channel 10 (under the jacket 3).

By the way, in the second embodiment, the bottom wall 2d of the inner pot 2 is substantially hemispherical, so the jacket 3 as a whole may simply be substantially hemispherical accordingly. Further, since the bottom wall 2d of the inner pot 2 has a substantially hemispherical shape, the guide plates 11 are not limited to the left-right direction, and can be arranged in any direction such as the front-rear direction. Therefore, the structure of the jacket 3 and the guide plate 11 can be said as follows. That is, a plurality of guide plates 11 extending in one direction are provided in the jacket 3 so as to be spaced apart in a direction orthogonal to the one direction, thereby forming a plurality of flow paths extending in one direction of the inner pot 2. At the same time, communication ports 11b for communicating adjacent flow paths are alternately provided at both ends of the guide plate 11 in the upper portion of the jacket 3 in the longitudinal direction, thereby forming the fluid flow paths 10 . Since the rest of the configuration and control are the same as those of the first embodiment (including the modified example), description thereof will be omitted.

The steam kettle 1 of the present invention is not limited to the configuration (including control) of each of the above embodiments, and can be modified as appropriate. In particular, it comprises (a) an inner pot 2 for storing food and a jacket 3 provided outside the inner pot 2 to which steam is supplied, and (b) the inside of the jacket 3 is partitioned by a guide plate 11 (c) entrances and exits for the fluid to the fluid passages 10 are provided in the jacket 3; While steam is supplied from one of them, air can be discharged from at least one of the other via the air discharge means 5, other configurations can be appropriately changed.

For example, in each of the above-described embodiments, if the steam supply means 4, the air discharge means 5 and the drain discharge means 6 are provided and the heating process can be executed after the air removal process, other configurations can be omitted depending on the case. Specifically, installation of the compressed air supply means 7 may be omitted, and implementation of each air blowing step may be omitted. Also, the cooling process may be omitted by omitting the installation of the water supply and drainage means 8 .

In each of the above embodiments, orifices and/or flow control valves may be provided in series with the air vent valves 30 and 32 in the discharge paths 31 and 33 from the upper ports 10a and 10b.

Also, instead of or in addition to the air vent valves 30, 32, a steam trap with an air exhaust function may be provided in the discharge paths 31, 33 from the respective upper ports 10a, 10b. The steam trap with an air exhaust function opens the valve by itself without being controlled by a controller, and exhausts air from the inside of the jacket 3 . For example, a steam trap with a built-in air blow valve that opens below a set temperature using a bimetal. Therefore, in the air removal process, the air blow valve is open at the beginning of steam supply into the jacket 3, and the air can be discharged from the jacket 3. When warmed by the steam, the valve closes and passes only the drain as a steam trap. make it possible. In addition, when the food is cooled by passing cooling water through the jacket 3 after the food is heated by steaming in the jacket 3, an on-off valve is provided in series with the steam trap with an air exhaust function. should be closed.

In each of the above-described embodiments, the fluid channel 10 in the jacket 3 is supplied with steam from the inlet/outlet (first lower port 10c) provided in the middle portion, and the inlet/outlet (first upper port 10c) provided in both ends. Although an example in which air can be discharged from the port 10a and the second upper port 10b) has been described, the following configuration may be adopted. That is, the fluid flow path 10 in the jacket 3 is supplied with steam from an inlet/outlet (for example, a first upper port 10a) provided at one end, and steam is supplied from an inlet/outlet (for example, a second upper port 10b) provided at the other end. Air may be expelled. Specifically, steam can be supplied from the steam supply means 4 to the first upper port 10a (or the second upper port 10b), and air discharge means can be supplied to the second upper port 10b (or the first upper port 10a). Air can be discharged from 5. In either case, steam can be sent along the fluid flow path 10 and exhausted from the air exhaust means 5 (air vent valve or steam trap with air exhaust function). Thereby, it is possible to efficiently and reliably discharge the air from inside each fluid channel 10 and furthermore from inside the jacket 3 .

In each of the above-described embodiments, the jacket 3 is partitioned by the guide plate 11 to form one fluid flow path 10 meandering through the entire jacket 3 , and both ends of the fluid flow path 10 are formed. Although the entrance and exit of the fluid are formed in the middle part, a plurality of fluid flow paths 10 may be formed in the jacket 3 . Even in such a case, it is preferable that each fluid channel 10 has inlets and outlets for the fluid formed at both ends thereof, or further formed at the middle portion as desired. Then, each fluid channel 10 can be switched to supply steam, compressed air, or cooling water as in the above-described embodiments.

Further, in each of the above embodiments, cold water can be circulated between the jacket 3 and the cold water production device, but normal temperature water may be passed through the jacket 3 . In this case, normal temperature water is supplied into the jacket 3 via the cold water supply path 47, and the water that has passed through the jacket 3 is discharged via the discharge paths 31 and 33. The installation of the drainage switching valve 36 can be omitted, and the water can be discharged to the outside from the third discharge path 35 (exhaust drainage path 37).

Further, in each of the above-described embodiments, pressure reduction means for sucking and discharging the gas in the inner pot 2 and/or the jacket 3 to the outside, and pressure restoring means for introducing outside air into the inner pot 2 under reduced pressure to restore pressure are provided. You may have more. When the inside of the inner pot 2 can be depressurized, the upper opening of the inner pot 2 is airtightly closed with a lid member 9 . By reducing the pressure in the jacket 3, the food in the inner pot 2 can be cooked at less than 100°C using vacuum steam.

In addition, the shape, the number of guide plates 11 provided in the jacket 3, the formation positions, etc. can be changed as appropriate. Furthermore, in each of the above embodiments, the steam kettle 1 is a steam kneader provided with the food stirring device 17, but the installation of the stirring device 17 may be omitted.

1 steam pot 2 inner pot (2a: peripheral side wall, 2b: side wall, 2c: hopper, 2d: bottom wall)
3 jacket (3a: peripheral side wall, 3b: side wall, 3c: notch hole, 3d: bottom wall, 3X: jacket material)
4 steam supply means 5 air discharge means 6 drain discharge means 7 compressed air supply means 8 water supply and drainage means 9 cover material 10 fluid flow path (10a: first upper port, 10b: second upper port, 10c: first lower port, 10d: second lower port)
11 guide plate (11a: hole, 11b: communication port, 11c: body piece, 11d: extension piece)
12 Pedestal 13 Side Frame 14 Drive Box 15 Rotating Shaft 16 Bearing 17 Stirring Device 18 Stirring Axis 19 Arm 20 Stirring Blade 21 Bearing 22 Operation Button 23 Touch Panel 24 Inner Flow Path 25 Outer Flow Path 26 Steam Supply Path 27 First Supply Path 28 Steam supply valve 29 Steam supply valve 30 Air vent valve 31 First discharge line 32 Air vent valve 33 Second discharge line 34 Common pipe 35 Third discharge line 36 Drain switching valve 37 Exhaust drain line 38 Cold water return line 39 Reverse Stop valve 40 Check valve 41 Drain discharge passage 42 Steam trap 43 Drain valve 44 Compressed air passage 45 Air supply valve 46 Cold water supply valve 47 Chilled water feed passage 48 Common pipe 49 Chilled water inlet passage 50 Chilled water inlet valve 51 Chilled water outlet passage 52 Chilled water outlet valve 53 pressure sensor

Claims (5)

Equipped with an inner pot containing food and a jacket provided outside the inner pot and supplied with steam,
The inside of the jacket is partitioned by a guide plate to form a fluid flow path,
A fluid inlet and outlet port for the fluid channel is provided in the jacket,
Steam is supplied from the steam supply means to at least one of the inlets and outlets, while air can be discharged from at least one of the other inlets and outlets through the air discharge means ,
Steam, cooling water, or compressed air can be switched to be supplied into the jacket,
a step of supplying steam into the jacket to discharge air from the air discharging means; a step of supplying steam into the jacket to heat food in the inner pot; a step of discharging steam from a container, a step of passing cooling water through the jacket to cool the food in the inner pot, and a step of passing compressed air through the jacket and discharging the cooling water from the jacket in sequence.
A steam kettle characterized by: 2. The steam kettle according to claim 1, wherein the air exhaust means is an air vent valve that opens when air is exhausted from the jacket, or a steam trap with an air exhaust function. one or more fluid flow paths are provided in the jacket,
Each of the fluid flow paths has (i) an inlet/outlet provided in the middle thereof to which the vapor supply means is connected, and an inlet/outlet provided at both ends thereof to which the air discharging means is provided; 3. The steam kettle according to claim 1 or 2, wherein the steam supplying means is connected to an inlet provided at the other end, and the air discharging means is provided at an inlet provided at the other end. The entrance and exit are provided in the upper and lower parts of the jacket,
The steam supply means is connected to an inlet and outlet provided in the lower part of the jacket, and the air discharge means is provided in the inlet and outlet provided in the upper part of the jacket. 1. Steam kettle according to item 1. 5. The method according to any one of claims 1 to 4, characterized in that cold water can be circulated in the fluid flow path in the jacket between the cold water production device and the cold water production device through the inlet/outlet provided in the jacket. Steam kettle as described.

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