JP2023137448A - Steam pot - Google Patents

Abstract

To provide a steam pot 1 in which a take-out port 25 of a processed object is disposed in a bottom 22 of an inner pot 2, and which can efficiently discharge condensed water of steam while securing strength of a welded portion.SOLUTION: A steam pot 1 for processing a processing target is provided, comprising an inner pot 2, a jacket 3, a tubular member 4, and a steam chamber 51. The steam pot 1 is constituted in such a manner that: the inner pot 2 houses the processing target; a take-out port 25 of the processing target is disposed in a bottom 22 of the inner pot 2; the jacket 3 is disposed outside the inner pot 2 in a manner covering at least a part of the bottom 22; a steam introduction space 33 is disposed between the jacket 3 and the inner pot 2; the tubular member 4 extends from the bottom 22 of the inner pot 2 in such a way as to penetrate into a bottom wall 32 of the jacket 3, and the peripheral wall surrounds the take-out port 25; a gap 9 is formed between an outer peripheral surface of the tubular member 4 and a bottom wall 32 of the jacket 3; the steam chamber 51 is disposed below the gap 9 and is communicated with the space 33 via the gap 9; and an exhaust port 52 of condensed water of steam is disposed in the steam chamber 51.SELECTED DRAWING: Figure 1

Description

The present invention relates to a steam kettle.

Conventionally, a jacket is provided on the outside of an inner pot that houses food and other objects to be processed, and high-temperature steam is introduced into the space (steam introduction space) formed between the jacket and the inner pot to remove the objects to be processed. A steam kettle with indirect heating is used. Patent Document 1 discloses a steam boiler equipped with an inner pot and a jacket, and an outlet is provided at the bottom of the inner pot, and the inside of the inner pot is opened and closed by switching the opening and closing of a valve body provided at the outlet. Food can be taken out.

When the outlet for taking out the material to be processed is provided at the bottom of the inner pot, by arranging the tubular member so as to penetrate the jacket from the bottom of the inner pot, it is possible to arrange the pipe for taking out the material to be processed extending from the outlet. A space is secured inside the tubular member. Usually, from the viewpoint of efficiency in taking out the workpiece, the outlet is provided at the lowest part of the bottom of the inner pot, and the tubular member is arranged such that its peripheral wall surrounds the outlet. Moreover, the space between the outer peripheral surface of the tubular member and the bottom wall of the jacket is closed by welding.

Utility model registration No. 2588298

FIG. 6 is a sectional view of a conventional steam boiler 1. A drain socket 54 is welded to the bottom wall 32 of the jacket 3 to connect a drain passage for condensed water of steam. In the above-mentioned configuration in which the outlet for taking out the material to be processed is provided in the bottom 22 of the inner pot 2, it is preferable to make the distance between the drain socket 54 and the tubular member 4 as small as possible in order to efficiently drain the condensed water. On the other hand, in order to ensure the strength of the jacket 3, there is a limit to how close the joint part of the drain socket 54 and the closing part near the outer peripheral surface of the tubular member 4 can be.

The present invention has been made in view of the above circumstances, and is a steam pot with an outlet for taking out the material to be processed at the bottom of the inner pot, which efficiently drains condensed water from the steam while ensuring the strength of the welded part. The purpose of the present invention is to provide a steam boiler that can be discharged in a vacuum.

According to the present invention, there is provided a steam pot for treating a workpiece, comprising an inner pot, a jacket, a tubular member, and a steam chamber, and the inner pot is configured to accommodate the workpiece. The bottom of the inner pot is provided with an outlet for taking out the object to be processed, the jacket is provided on the outside of the inner pot so as to cover at least a portion of the bottom, and the jacket and A space into which steam can be introduced is provided between the inner pot and the tubular member, which extends from the bottom of the inner pot to penetrate a bottom wall of the jacket, and a peripheral wall of the tubular member. is arranged to surround the outlet, a gap is formed between the outer peripheral surface of the tubular member and the bottom wall of the jacket, and the steam chamber is provided below the gap, A steam kettle is provided, which communicates with the space through a gap, and the steam chamber is provided with an outlet for condensed water of the steam.

In the steam boiler according to the present invention, a gap is formed between the outer peripheral surface of the tubular member and the bottom wall of the jacket, and a steam chamber communicating with the steam introduction space is provided below the gap, and condensed water is provided in the steam chamber. A discharge port is provided. In such a configuration, condensed water can be efficiently discharged to the outside of the steam chamber via the discharge port and the gap in contact with the outer circumferential surface of the tubular member. Further, when a drain socket is provided as a discharge port, it is not necessary to bring the welded part of the tubular member and the welded part of the drain socket extremely close to each other, so it is possible to avoid a decrease in the strength of the welded part.

Various embodiments of the present invention will be illustrated below. The embodiments shown below can be combined with each other.
Preferably, the outlet is provided at the bottom of the steam chamber.
Preferably, the gap is formed between the tubular member and the bottom wall around the outer peripheral surface of the tubular member.

FIG. 1 is a front view of a steam boiler 1 according to an embodiment of the present invention. FIG. 2 is a perspective view of the steam boiler 1 seen from below. FIG. 3A is a plan view of the steam boiler 1. FIG. 3B is a cross-sectional view taken along line AA in FIG. 3A. FIG. 3B is an enlarged view of region B in FIG. 3B. FIG. 2 is a schematic diagram showing a connection mode between the steam pot 1, steam supply means 6, cooling water circulation means 7, and drain discharge means 8. FIG. It is a sectional view of a conventional steam boiler 1.

Embodiments of the present invention will be described below with reference to the drawings. The features shown in the embodiments below can be combined with each other. Further, the invention is established independently for each characteristic matter.

1. Configuration of Steam Cooker FIG. 1 is a front view of a steam cooker 1 according to an embodiment of the present invention. The steam cauldron 1 is for treating objects to be treated. The steam pot 1 of this embodiment is used to heat food, which is an object to be processed, and as shown in FIGS. 1 to 3B, the steam pot 1 includes an inner pot 2, a jacket 3, a tubular member 4, and a steam chamber member. 5. A steam introduction space 33 is provided between the jacket 3 and the inner pot 2, and a steam chamber 51 is provided between the steam chamber member 5 and the jacket 3. In the following description, the vertical and horizontal directions of the steam pot 1 are defined as shown in FIG.

The inner pot 2 is configured to accommodate the object to be processed. As shown in FIG. 3B, the inner pot 2 of this embodiment is a bottomed hollow container with an open top, and includes a cylindrical portion 21 and a bottom portion 22 that is convex downward. A pair of shaft portions 23 are provided on the sides of the inner pot 2 and project outward in the left-right direction. The shaft portion 23 is supported by a support member (not shown). As a result, the steam pot 1 is placed floating above the floor surface on which it is installed.

The objects to be processed are introduced through the opening 24 of the inner pot 2 and accommodated therein. Further, the bottom portion 22 of the inner pot 2 is provided with an outlet 25 for taking out the object to be processed. The outlet 25 of this embodiment is provided at the lowest part of the bottom 22 of the inner pot 2 and is formed by joining a cylindrical outlet member 26 to the bottom 22 of the inner pot 2 by welding. A take-out valve (not shown) is attached to the take-out port 25, and a take-out pipe (not shown) for moving the object to be processed outside is connected thereto. When processing the object to be processed, the take-out valve can be closed to put the take-out port 25 in a closed state, and when to take out the work-piece, the take-out valve can be opened to put the take-out port 25 in an open state.

The jacket 3 is provided outside the inner pot 2 so as to cover at least a portion of the bottom 22 of the inner pot 2. As shown in FIG. 3B, the jacket 3 of this embodiment is provided so as to cover most of the bottom 22 of the inner pot 2, and is provided continuously from the cylindrical side wall 31 and extends downward. and a convex bottom wall 32. The upper end of the side wall 31 is joined to the bottom portion 22 of the inner pot 2 by welding.

A steam introduction space 33, which is a space into which steam can be introduced, is provided between the jacket 3 and the inner pot 2. In this embodiment, as shown in FIG. Steam can be supplied to the steam introduction space 33 from the supply port 34 (illustrated). Note that the supply port 34 is not shown in FIGS. 1 to 3B. Specifically, the steam supply means 6 includes a steam supply path 61 that connects the boiler and the supply port 34, and the steam supply path 61 is provided with a steam supply valve 62. By opening the steam supply valve 62, high temperature steam can be supplied from the boiler to the steam introduction space 33, and by closing the steam supply valve 62, the supply of steam can be stopped.

Moreover, the steam introduction space 33 of this embodiment is configured to be able to introduce cooling water. As shown in FIG. 5, the cooling water circulation means 7 supplies cooling water from a cooling source (not shown) to the steam introduction space 33, and returns the cooling water discharged from the steam introduction space 33 to the cooling source. For example, a chiller can be used as the cooling source. Specifically, the cooling water circulation means 7 includes an outflow channel 71 that connects the cooling source and the supply port 34, and a return channel 72 that connects the cooling source and the cooling water discharge port 35 provided on the side wall 31 of the jacket 3. Equipped with. Note that the cooling water outlet 35 is not shown in FIGS. 1 to 3B. A cooling water supply valve 73 is provided in the outgoing channel 71, and a cooling water discharge valve 74 is provided in the returning channel 72. Note that the outgoing water passage 71 on the downstream side of the cooling water supply valve 73 and the steam supply passage 61 on the downstream side of the steam supply valve 62 are connected to the supply port 34 as a common pipe line. When cooling the object to be processed after heating, the cooling water supply valve 73 and the cooling water discharge valve 74 are opened after stopping the supply of steam to circulate the cooling water and indirectly cool the object to be processed. Note that the cooling water supply mode is not limited to the above example, and for example, room temperature cooling water from a water supply source is supplied to the steam introduction space 33 from the supply port 34, and is discharged from the cooling water discharge port 35. The cooled water may be discharged to the outside by a drainage means.

As shown in FIGS. 2 and 3B, the tubular member 4 extends from the bottom 22 of the inner pot 2 to penetrate the bottom wall 32 of the jacket 3, so that the peripheral wall of the tubular member 4 surrounds the outlet 25. will be placed in The tubular member 4 of this embodiment has a cylindrical shape, and its upper end is joined to the bottom portion 22 of the inner pot 2 by welding. A take-out valve and a portion of the take-out conduit are arranged in the space inside the tubular member 4. Note that in this embodiment, due to the arrangement of the take-out valve and the take-out pipe, the central axis of the tubular member 4 is horizontally shifted from the central axis of the take-out port 25 as shown in FIG. 3B. The arrangement of the tubular member 4 is not limited to this, for example, the tubular member 4 may be arranged so that both central axes coincide. Further, the tubular member 4 is not limited to a cylindrical shape, and may have a rectangular tube shape, for example.

As shown in FIGS. 3B and 4, a gap 9 is formed between the outer peripheral surface of the tubular member 4 and the bottom wall 32 of the jacket 3. As shown in FIGS. In this embodiment, the lowest part of the bottom wall 32 of the jacket 3 is cut out to form a through hole having an inner diameter larger than the outer diameter of the tubular member 4. By inserting and disposing the tubular member 4 through the through hole of the bottom wall 32, a gap is created between the outer circumferential surface of the tubular member 4 and the bottom wall 32 of the jacket 3 over the entire circumference of the outer circumferential surface of the tubular member 4. There are 9. Furthermore, in this embodiment, at least a portion of the gap 9 is located at the lowest part of the cut-out bottom wall 32.

The steam chamber 51 is provided below the gap 9 and communicates with the steam introduction space 33 via the gap 9. In this embodiment, a bottomed cylindrical steam chamber member 5 is disposed outside the bottom wall 32 of the jacket 3 and directly below the gap 9 so as to cover at least a part of the bottom wall 32 of the jacket 3. A steam chamber 51 is provided between the member 5 and the bottom wall 32. Thereby, the condensed water of the steam generated in the steam introduction space 33 can move to the steam chamber 51 via the gap 9. In order to efficiently move the steam condensed water, it is preferable that the size of the gap 9 along the radial direction of the tubular member 4 is 5 mm to 20 mm.

The upper end of the steam chamber member 5 is joined to the bottom wall 32 of the jacket 3 by welding. Further, the tubular member 4 passes through the steam chamber 51, and the space between the outer peripheral surface of the tubular member 4 and the bottom wall 53 of the steam chamber member 5 is closed by welding. Note that the steam chamber member 5 is not limited to a cylindrical shape with a bottom, and may be, for example, a rectangular cylindrical shape with a bottom.

As shown in FIG. 4, the steam chamber 51 is provided with an outlet 52 for steam condensed water (drain). The outlet 52 of this embodiment is provided at the bottom of the steam chamber 51, in other words, on the bottom wall 53 of the steam chamber member 5. Specifically, the outlet 52 is provided by forming a through hole in the bottom wall 53 of the steam chamber member 5 and joining the drain socket 54 to the bottom wall 53 at the location where the through hole is formed by welding. The discharge port 52 of this embodiment is located at the lowest part of the steam chamber 51. As shown in FIG. 5, a drain discharge means 8 for discharging condensed water to the outside is connected to the drain socket 54. Specifically, the drain discharge means 8 includes a drain discharge path 81, and the drain discharge path 81 is provided with a steam trap 82. When steam is supplied to the steam introduction space 33, the steam that flows into the steam chamber 51 from the steam introduction space 33 is prevented from leaking to the outside by the steam trap 82. On the other hand, the steam condensed water can pass through the steam trap 82 and be discharged to the outside.

2. Operation of the steam pot 1 When heating the object to be processed, the steam supply valve 62 is opened to introduce steam from the boiler into the steam introduction space 33. The introduced steam fills the steam introduction space 33 and also fills the steam chamber 51 via the gap 9. After the steam introduction space 33 and the steam chamber 51 are set to a set heating pressure (set heating temperature), the temperature of the object to be processed in the inner pot 2 is maintained by maintaining that state.

As heating progresses, water condenses from the steam. The condensed water generated in the steam introduction space 33 moves to the steam chamber 51 via the gap 9, and is further discharged from the discharge port 52 of the steam chamber 51.

When heating is finished, the steam supply valve 62 is closed to stop the supply of steam. When performing cooling after heating, the cooling water supply valve 73 and the cooling water discharge valve 74 are opened to introduce cooling water from the cooling source into the steam introduction space 33. Thereby, cooling water will circulate between the cooling source and the steam introduction space 33.

3. Effects FIG. 6 is a sectional view of a conventional steam boiler 1. In the conventional steam pot 1, the tubular member 4 extends from the bottom 22 of the inner pot 2 to penetrate the bottom wall 32 of the jacket 3, and is arranged so as to surround the outlet 25 for the material to be processed. has been done. The space between the outer peripheral surface of the tubular member 4 and the bottom wall 32 of the jacket 3 is closed by welding. Further, a drain socket 54 is welded to a discharge port 52 provided in the bottom wall 32 of the jacket 3, and the condensed water of the steam is discharged to the outside via the drain socket 54. In such a conventional configuration, in order to more efficiently discharge the condensed water generated within the steam introduction space 33, it is preferable to make the distance between the drain socket 54 and the tubular member 4 as small as possible. On the other hand, in order to ensure the strength of the jacket 3 in which the inner steam introduction space 33 is under high pressure when steam is introduced, there is a limit to how close the closing part of the tubular member 4 and the joining part of the drain socket 54 can be.

In the steam boiler 1 of this embodiment, when steam condenses in the steam introduction space 33, condensed water moves to the steam chamber 51 via the gap 9, and exits from the discharge port 52 provided in the steam chamber 51. It is discharged. Therefore, condensed water can be efficiently discharged to the outside of the steam chamber 51. In addition, when a drain socket 54 is provided as the discharge port 52, it is joined to the wall surface of the steam chamber member 5 by welding, so that the drain socket 54 is connected to the closing point between the bottom wall 32 of the jacket 3 and the outer peripheral surface of the tubular member 4. There is no need to bring the joints close together.

Further, in this embodiment, at least a part of the gap 9 formed between the outer peripheral surface of the tubular member 4 and the bottom wall 32 of the jacket 3 is located at the lowest part of the bottom wall 32 of the jacket 3. . Therefore, the condensed water generated in the steam introduction space 33 can be moved to the steam chamber 51 more efficiently. Further, since the outlet 52 of the steam chamber 51 is located on the bottom wall 53 of the steam chamber member 5 and at the lowest part of the steam chamber 51, the condensed water in the steam chamber 51 can be more efficiently discharged to the outside. Can be discharged.

4. Other Embodiments In the above embodiments, the gap 9 is formed between the tubular member 4 and the bottom wall 32 of the jacket 3 over the entire circumference of the outer circumferential surface of the tubular member 4, but the structure of the gap 9 is not limited to this. do not have. A gap 9 may be provided between the tubular member 4 and the bottom wall 32 of the jacket 3 along a part of the circumference of the outer peripheral surface of the tubular member 4. Alternatively, a plurality of gaps 9 may be provided at predetermined intervals along the circumferential direction of the outer peripheral surface of the tubular member 4 and the bottom wall 32 of the jacket 3.

Although various embodiments according to the present invention have been described above, these are presented as examples and are not intended to limit the scope of the invention. The new embodiment can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included within the scope and gist of the invention, as well as within the scope of the invention described in the claims and its equivalents.

1 : Steam pot 2 : Inner pot 3 : Jacket 4 : Tubular member 5 : Steam chamber member 6 : Steam supply means 7 : Cooling water circulation means 8 : Drain discharge means 9 : Gap 21 : Cylindrical part 22 : Bottom part 23 : Shaft part 24 : Opening 25 : Outlet 26 : Outlet member 31 : Side wall 32 : Bottom wall 33 : Steam introduction space 34 : Supply port 35 : Cooling water outlet 51 : Steam chamber 52 : Outlet 53 : Bottom wall 54 : Drain socket 61 : Steam supply path 62 : Steam supply valve 71 : Outgoing path 72 : Return path 73 : Cooling water supply valve 74 : Cooling water discharge valve 81 : Drain discharge path 82 : Steam trap

Claims (3)

A steam cauldron for treating a material to be treated,
Comprising an inner pot, a jacket, a tubular member, and a steam chamber,
The inner pot is configured to accommodate the object to be processed,
An outlet for taking out the object to be processed is provided at the bottom of the inner pot,
The jacket is provided outside the inner pot so as to cover at least a portion of the bottom,
A space into which steam can be introduced is provided between the jacket and the inner pot,
The tubular member extends from the bottom of the inner pot to penetrate the bottom wall of the jacket, and is arranged such that a peripheral wall of the tubular member surrounds the outlet,
A gap is formed between the outer peripheral surface of the tubular member and the bottom wall of the jacket,
The steam chamber is provided below the gap and communicates with the space via the gap,
A steam kettle, wherein the steam chamber is provided with an outlet for condensed water of the steam. The steam kettle according to claim 1,
The discharge port is provided at the bottom of the steam chamber. The steam kettle according to claim 1 or claim 2,
In the steam boiler, the gap is formed between the tubular member and the bottom wall over one circumference of the outer peripheral surface of the tubular member.