JP2019208720A - Steam pot - Google Patents

Abstract

To provide a steam pot capable of evenly and rapidly cooling especially a food after being heated by improving heat exchange efficiency of a food in an inner pot and fluid in a jacket.SOLUTION: A steam pot includes: an inner pot 2 for storing a food; a jacket 3 provided in the outside of the inner pot 2; and a guide plate 14 partitioning the jacket 3 so as to form a fluid flow path in the jacket 3. The guide plate 14 is provided so as to bridge the external surface of the inner pot 2 and the inner surface of the jacket 3 in the lateral part or the upper part of the jacket 3 besides the bottom of the jacket 3. The fluid flow path is preferably provided by meandering in the jacket 3 by the flat plate-like guide plate 14. The food is heated by supplying steam into the jacket 3, and the food is cooled by supplying cooling water into the jacket 3. As cooling water, cold water is preferably used.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a steam pot provided with a jacket on the outside of an inner pot in which food is stored, and in particular, supplies steam to the jacket to heat the food, or supplies cooling water to the jacket to supply the food. It is related with the steam pot which can cool.

  Conventionally, as disclosed in the following Patent Document 1, a plurality of ring-shaped fins (concentrically arranged at predetermined intervals in the jacket (2) of the steam pot corresponding to the bottom surface of the inner pot (pot main body 1)). 14) has been proposed. Specifically, as described in paragraph [0007] of Patent Document 1, a predetermined concentric shape is formed on the bottom surface of the inner hook (pot main body 1) covered in a sealed manner with a jacket (2) from the center thereof. A plurality of ring-shaped fins (14) having a plurality of intervals are attached so as to maintain a required space between the tip and the inner surface of the jacket, and each fin has a steam discharge port (10) provided at one end of the jacket. A slit (15) that constitutes a steam circulation space along a direction toward the steam discharge port (11) provided at the other end of the jacket from the same, and a similar slit (15 '). Then, the heated steam released from the discharge port is dispersed in the gaps between the fins and the gaps between the tips of the fins and the inner surface of the jacket, and slowly diffuses and circulates over the entire bottom of the inner pot. In the meantime, heat is exchanged efficiently at the bottom of the inner hook and the surfaces of the fins.

  However, in the invention described in Patent Document 1, fins are provided only on the bottom surface of the inner hook, and steam is circulated with a sufficient space between the tip of the fins and the inner surface of the jacket. Distribute steam into the gaps between the fins and the gap between the tips of the fins and the inner surface of the jacket by, for example, providing a slit for steam circulation along the discharge port. It diffuses and distributes throughout the bottom. In other words, the steam diffuses into the jacket and does not flow through a specific flow path (in other words, the fin is literally a fin and spans the inner surface of the inner hook and the inner surface of the jacket to partition the inside of the jacket. Therefore, there is room for improvement in shortening the heating time. In addition, in the configuration described in Patent Document 1, it is difficult to discharge air from the inside of the jacket, and there is a possibility that the diffusion of steam may be hindered.

  Moreover, in invention of patent document 1, only heating of a foodstuff is possible and cooling cannot be aimed at. Even if cooling water is passed through the jacket, the following problems remain. That is, since the fins are formed in a plurality of vertically oriented substantially cylindrical shapes, the fins are not installed on the side or upper portion of the jacket, but are installed only on the bottom of the inner hook. Since fins are provided only in a region corresponding to the bottom surface of the inner hook (in other words, fins are not provided on the side or upper portion of the jacket), there is room for improvement in heat exchange efficiency on the side or upper portion of the jacket. Furthermore, as described above, the fin is provided with a sufficient space between its tip and the inner surface of the jacket, and is not a member that spans the inner surface of the inner hook and the inner surface of the jacket to partition the inside of the jacket. It cannot flow along a specific flow path, and it is easy to make a short pass. In addition, fins are provided only in the region corresponding to the bottom surface of the inner hook, and fluid is passed from the discharge port (10) provided at one end of the jacket toward the discharge port (11) provided at the other end. Therefore, there is a possibility that steam or cooling water may short-pass to the discharge port through the cylindrical space between the outer peripheral surface of the outermost fin and the inner peripheral surface of the jacket, and there is room for improvement in heat exchange efficiency.

  On the other hand, as disclosed in Patent Document 2 below, a steam pot having a steam chamber (3) and a cooling chamber (13) as a jacket has also been proposed. Specifically, a steam chamber (3) is provided from the middle stage of the outer peripheral surface of the inner pot (pot main body 1) to the bottom, a cooling chamber (13) is provided above the steam chamber, and the steam chamber and the cooling chamber are cooled. The chamber is connected by a connecting pipe (14), and a stop valve (15) is provided in the connecting pipe. When the steam kettle is forcibly cooled in preparation for the next low-temperature cooking without waiting for the natural cooling of the steam kettle after cooking, tap water from the water pipe (19) is filled into the steam chamber (3), and The operation of filling the cooling chamber (13) through the connecting pipe (14) and discharging from the drain port (16) is performed.

  However, in the invention described in Patent Document 2, it is intended to forcibly cool the steam kettle in preparation for the next low temperature cooking, and not to cool the food after cooking. Even if the cooling water is passed through the jacket with food stored in the inner pot, the following problems remain. That is, the cooling chamber outer plate (12) is formed to be thinner than the vapor chamber outer plate (2) ([0013]), and the upper portion (1b) from the vapor chamber (3) is heated with steam from the viewpoint of preventing burning. ([0004]), the cooling chamber (13) can be supplied only with cooling water, and is not a jacket that is supplied by switching between steam and cooling water. And since the steam chamber (3) which is an original jacket is a mere hollow part, there is room for improvement in heat exchange efficiency. Cooling water supply port to the steam chamber (3) (end opening of the steam introduction pipe 4) and water supply port from the steam chamber (3) to the cooling chamber (13) (connection port of the connection pipe 14 to the steam chamber 3) )), The cooling water is not uniformly distributed in the steam chamber (3) during cooling, and uniform and rapid cooling cannot be achieved. Furthermore, even if the fin described in Patent Document 1 is provided, it is only provided in a region corresponding to the bottom surface of the inner hook (and the fluid flow path is not formed by bridging the outer surface of the inner hook and the inner surface of the jacket). As described above, there is room for improvement in heat exchange efficiency. Further, since various pipes (4, 5) are provided in the jacket, it is difficult to install fins, and a continuous flow path cannot be formed in the jacket.

JP 2007-222272 A Japanese Patent No. 2889169

  The problem to be solved by the present invention is to improve the heat exchange efficiency between the food in the inner pot and the fluid in the jacket, and in particular, to provide a steam pot that can quickly and uniformly cool the food after cooking. There is.

  The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is provided in an inner pot in which food is accommodated and on the outside of the inner pot, and steam or cooling water is switched. A jacket that can be supplied by the vehicle, and a member that divides the jacket so as to form a fluid flow path in the jacket, in addition to the bottom of the jacket, on the side of the jacket or on the top of the jacket, A steam kettle comprising a guide plate provided to bridge an outer surface and an inner surface of the jacket.

  According to the first aspect of the present invention, steam and cooling water can be switched and supplied to the jacket, so that not only can steam be supplied into the jacket to heat food, but cooling water is supplied into the jacket. And the food can be cooled. In addition, the inside of the jacket is partitioned by a guide plate to form a fluid channel (and a guide plate is provided so as to bridge the outer surface of the inner hook and the inner surface of the jacket to form a fluid channel). Since the guide plate is provided not only at the bottom of the jacket but also at the side or top, heat exchange between the food in the inner pot and the fluid in the jacket can be efficiently achieved. Therefore, at the time of cooling the food after cooking, the cooling water can be circulated not only at the bottom part of the jacket but also at the side part or the upper part, so that the food can be quickly cooled without unevenness. Moreover, when supplying the cooling water into the jacket, the cooling water can flow along the fluid flow path (in other words, the retention and bypassing of the cooling water is suppressed). Cooling can be efficiently performed, and the cooling time can be shortened.

  The invention according to claim 2 is characterized in that the fluid flow path is formed by providing the guide plate in the jacket so as to form a flow path meandering in the jacket. The steam kettle according to 1.

  According to the second aspect of the present invention, since the fluid flow path is provided so as to meander in the jacket, the cooling water can be circulated through each portion of the jacket, so that the food can be quickly cooled without unevenness.

  The invention according to claim 3 is characterized in that one or a plurality of single flow paths are provided as the fluid flow paths, and fluid inlets and outlets are provided at both ends of each single flow path. A steam kettle according to claim 1 or claim 2.

  According to the third aspect of the present invention, one or a plurality of single flow paths are formed in the jacket, and fluid inlets and outlets are provided at both ends of each single flow path, so that the fluid is trapped in each part of the jacket. It can flow without.

  The invention according to claim 4 is provided with one or a plurality of single flow paths as the fluid flow paths, and each of the single flow paths is provided with one or more cooling water inlets and outlets, the most downstream side. 4. The guide plate is provided so that the flow rate of the cooling water is the same regardless of the location in the fluid flow path from the cooling water inlet to the most upstream cooling water outlet. A steam kettle according to claim 1.

  According to the invention described in claim 4, one or a plurality of single flow paths are formed in the jacket, and for each single flow path, there are provisionally a plurality of cooling water inlets on the upstream side, or cooling water on the downstream side. Even if there are a plurality of outlets, in the fluid flow path from the most downstream cooling water inlet to the most upstream cooling water outlet, the cooling water flow rate can be made equal regardless of the location. Therefore, at least in the section from the most downstream cooling water inlet to the most upstream cooling water outlet, there is no bypass of the cooling water, and the food can be cooled according to the flow rate of the cooling water.

  A fifth aspect of the present invention is the steam kettle according to any one of the first to fourth aspects, wherein each of the guide plates has a flat plate shape or a flat plate shape having unevenness.

  According to the fifth aspect of the present invention, each guide plate is formed of a flat plate or a flat plate having unevenness. Therefore, the inside of the jacket is easily partitioned by the guide plate with a simple configuration, and the fluid flow A path can be formed.

  According to a sixth aspect of the present invention, a fluid inlet / outlet is provided in the fluid flow path, and cold water can be circulated in the jacket with the cold water producing apparatus via the inlet / outlet. It is a steam cooker of any one of Claims 1-5.

  According to invention of Claim 6, a cold water manufacturing apparatus can be connected to a steam kettle, and cold water can be circulated in a jacket between cold water manufacturing apparatuses. By circulating the cold water in the jacket, the food can be cooled more quickly and to a low temperature.

  According to a seventh aspect of the present invention, the inner hook has a horizontally-oriented substantially cylindrical shape whose axis is arranged in the left-right direction, and both left and right end portions thereof are closed by side walls, and the side-shaped substantially cylindrical peripheral side wall is The upper part is formed so as to open upward, and the jacket is provided in a lower region from a middle part in the vertical direction of the inner hook so as to cover the peripheral side wall of the inner hook and each lower region of the side wall, In the jacket, a plurality of guide plates extending in the left-right direction are provided apart from each other in the front-rear direction, so that a plurality of flow paths extending in the longitudinal direction of the inner hook are formed and adjacent flow paths are provided. 2. The fluid flow path is formed as a single flow path by providing a communication port for communicating with the left and right alternately at the upper part of the jacket on the left and right sides of the inner hook. The steam pot according to any one of -6 A.

  According to the seventh aspect of the present invention, a plurality of flow paths extending in the longitudinal direction of the inner hook are formed by the guide plate in the steam pot provided with a jacket in the lower region of the laterally substantially cylindrical inner hook. At the same time, the communication channels for communicating adjacent channels are provided alternately on the left and right above the side of the jacket, so that the fluid channel can be easily formed as a single channel. Since the fluid is folded back and meanders in the jacket through the communication port above the side of the jacket, the cooling water is surely distributed not only at the bottom of the jacket but also at the side and top, thereby unevenly cooling the food. Can be achieved quickly.

  According to an eighth aspect of the present invention, the inner hook has a vertically-oriented substantially cylindrical shape whose axis is arranged along the vertical direction, and a lower end portion thereof is closed by a bottom wall that bulges downward in a substantially arc shape. In addition, the jacket is formed so as to open upward, and the jacket is provided in a lower region from the middle in the vertical direction of the inner hook so as to cover at least the bottom wall of the inner hook. A plurality of guide plates extending in one direction are provided apart from each other in a direction orthogonal to the one direction, so that a plurality of channels extending in one direction of the inner hook are formed, and adjacent channels are 7. The fluid flow path is formed as a single flow path by providing communication ports to be communicated alternately at both ends in the longitudinal direction of the guide plate in the upper part of the jacket. The steam kettle according to any one of the above.

  According to the eighth aspect of the present invention, in the steam pot provided with a jacket in the lower region of the vertically-oriented substantially cylindrical inner pot, a plurality of flow paths extending in one direction of the inner pot are formed by the guide plate. In addition, since the communication ports for communicating adjacent flow paths are alternately provided at both ends in the longitudinal direction of the guide plate in the upper part of the jacket, the fluid flow path can be easily formed as a single flow path. Since the fluid is folded back and meanders in the jacket through the communication port at the top of the jacket, the cooling water is surely distributed not only at the bottom of the jacket but also at the top, so that the food can be cooled quickly and uniformly. Can do.

  The steam according to any one of claims 1 to 8, wherein a drain discharge hole or notch is formed in an outer end portion of the guide plate. It is a kettle.

  According to the ninth aspect of the present invention, drain (condensed water of steam) can be easily discharged to the bottom of the jacket through the hole or notch provided in the outer end of the guide plate.

  According to a tenth aspect of the present invention, one end of the guide plate is fixed to one member of the inner hook and the jacket, and the other end of the guide plate is contacted to the other member. 10. The guide plate is fixed to the one member by being in contact with or adjacent to each other, and one end side of the guide plate is intermittently welded to the one member. A steam kettle according to claim 1.

  According to the invention described in claim 10, the guide plate is fixed to one member of the inner hook and the jacket, and is assembled in contact with or close to the other member. Therefore, a fluid flow channel can be easily provided in the jacket by bridging the guide plate between the outer surface of the inner hook and the inner surface of the jacket. In addition, since the guide plate is fixed to the one member by intermittently welding one end of the guide plate to the one member, distortion during welding can be prevented. Furthermore, when the outer end side of the guide plate and the inner surface of the jacket are intermittently welded, even if a gap occurs between the welded portions, the gap can be used as a drain discharge gap. Similarly, when intermittently welding between the inner edge of the guide plate and the outer surface of the inner hook, even if there is a gap between the outer edge of the guide plate and the inner surface of the jacket, the gap is drained. It can be used as a gap.

  According to an eleventh aspect of the present invention, the fluid channel is formed as a single channel, and upper and lower fluid inlets and outlets are provided at both ends of the single channel in the upper part of the jacket. The steam pot according to any one of claims 1 to 10, wherein a lower entrance / exit of a fluid is provided at a central portion of the single flow path in the lower part.

  According to the eleventh aspect of the present invention, by forming the fluid flow path as a single flow path in the jacket, the fluid can flow to each part in the jacket without stagnation. In addition, fluid inlets and outlets are provided at both ends of the single flow path at the upper part of the jacket and at the central part of the single flow path at the lower part of the jacket. Therefore, the flow of the fluid in the jacket is changed by switching the inlet / outlet of which the fluid is supplied into the jacket and / or the outlet / outlet of the fluid is discharged from the jacket. be able to.

  In the invention described in claim 12, it is possible to switch between supplying steam from the two upper entrances and from the lower entrance, and supplying cooling water from the lower entrances and exhausting from the two upper entrances. The steam kettle according to claim 11, wherein the steam pot can be switched between being supplied from one upper doorway and being discharged from the other upper doorway.

  According to the twelfth aspect of the present invention, the air in the jacket is eliminated and the food in the inner pot is uniformly heated by switching whether the steam is supplied from the upper entrance or the lower entrance. Can do. In addition, with respect to the cooling water, the way of flowing in the fluid flow path in the jacket can be changed. In particular, at the time of transition from the heating process to the cooling process, if the cooling water is supplied from the lower inlet / outlet and discharged from the upper inlet / outlet, the cooling water supplied into the jacket is warmed up to the upper part. The stress can be relieved to prevent cracks in the connection portion (welded portion) with the inner hook at the upper portion of the jacket. Thereafter, the cooling water is supplied from one upper inlet / outlet and discharged from the other upper inlet / outlet, so that the cooling water flows along the single channel and the food in the inner pot can be reliably cooled. .

  Furthermore, in the invention described in claim 13, steam, cooling water, or compressed air can be switched and supplied into the jacket, and the compressed air is supplied from two upper entrances and discharged from the lower entrances. Heating the food in the inner pot by supplying steam into the jacket, discharging the steam through compressed air in the jacket, cooling the food in the inner pot through cooling water in the jacket The steam pot according to claim 11 or 12, wherein the step of performing and the step of discharging cooling water through compressed air into the jacket are sequentially performed.

  According to the thirteenth aspect of the present invention, after the heating step, it is possible to remove the steam from the jacket and to cool the inner pot and the jacket by passing the compressed air through the jacket. In addition, after the cooling step, water hammer is prevented during the next steaming by discharging the cooling water through the compressed air through the jacket.

  According to the steam pot of the present invention, the efficiency of heat exchange between the food in the inner pot and the fluid in the jacket can be improved, and in particular, the food after cooking can be quickly and uniformly cooled.

It is a schematic block diagram which shows the steam cooker of Example 1 of this invention. FIG. 2 is a schematic front view of the steam pot of FIG. 1, in which a part is cut out and shown in a cross section, and a part is omitted. It is the III-III sectional view in FIG. It is a schematic perspective view which shows an example of the jacket used for the steam cooker of FIG. 1, and has shown the state which attached the guide plate for forming a fluid flow path. It is a table | surface which shows the main process of the steam cooker of FIG. 1, and the opening / closing state of the main valve in each process. FIG. 5 is a schematic perspective view showing a modification of the jacket shown in FIG. 4 and shows a state where a guide plate for forming a fluid flow path is attached. It is a schematic front view which shows the steam kettle of Example 2 of this invention, and one part is abbreviate | omitted and shown. FIG. 8 is a schematic cross-sectional view showing an example of a jacket used in the steam pot of FIG. 7, showing a state where a guide plate for forming a fluid flow path is attached.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 3 are schematic views showing a steam pot 1 according to a first embodiment of the present invention. FIG. 1 is a configuration diagram, FIG. 2 is a front view, and FIG. 3 is a sectional view taken along line III-III in FIG. In FIG. 2, a part is notched and shown in a cross section, and in FIG. 2 and FIG. 3, a part is omitted.

  As shown in FIG. 1, the steam pot 1 of the present embodiment includes an inner pot 2 in which food is stored, a jacket 3 provided outside the inner pot 2, and a steam supply for supplying steam into the jacket 3. Means 4, drain discharge means 5 for discharging condensed water (drain) of steam supplied into the jacket 3, compressed air supply means 6 for supplying compressed air into the jacket 3, and cooling water supply / drainage to the jacket 3 Water supply / drainage means 7, decompression means 8 that sucks and discharges the gas in the inner hook 2 and jacket 3 to the outside, return pressure means 9 that introduces outside air into the inner pot 2 under reduced pressure, Control means (not shown) for controlling the means 4-9. In addition, as shown with the dashed-dotted line enclosure, the steam cooker 1 of a present Example is divided into the shuttle unit 10 and the fluid unit 11, and both units 10 and 11 are connected and used.

  The inner pot 2 is a hollow container with a bottom that opens upward. The inner hook 2 is not particularly limited in its shape, but in this embodiment, as shown in FIG. 2, the inner hook 2 has a substantially cylindrical shape (circumferential side wall 2a) with its axis lined in the left-right direction, and its left and right ends. Is closed by a side wall 2b that bulges outward in the left-right direction, and a hopper 2c that opens upward is provided above the peripheral side wall 2a excluding the left and right ends. In the present embodiment, the inner hook 2 can be opened and closed with the lid member 12 at the upper opening. When the lid 12 is closed, the inner pot 2 can be sealed.

  FIG. 4 is a schematic perspective view showing an example of the jacket 3 used in the steam kettle 1 of the present embodiment, and shows a state in which a guide plate 14 for forming the fluid flow path 13 is attached.

  As shown in FIGS. 2 to 4, the jacket 3 includes a jacket material 3 </ b> X provided so as to cover a lower region of the inner hook 2. Steam, compressed air, or cooling water can be switched and supplied into the jacket 3 (the space between the inner hook 2 and the jacket material 3X). For example, if steam is supplied into the jacket 3, the food in the inner pot 2 can be heated, and if cooling water is supplied into the jacket 3, the food in the inner pot 2 can be cooled. Further, if steam is supplied into the jacket 3 to heat the food and then compressed air is passed 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 food is supplied into the jacket 3 to cool the food, if compressed air is passed through the jacket 3, the cooling water can be discharged from the jacket 3 and water hammer at the next steaming can be prevented. Can do.

  In this embodiment, the jacket 3 (more specifically, the jacket material 3X) is arranged so that the upper and lower sides of the inner pot 2 are covered so as to cover the respective lower regions of the peripheral side wall 2a and the left and right side walls 2b of the horizontally-oriented inner pot 2. It is provided in the lower region from the midway direction. In the illustrated example, the jacket 3 is provided with a peripheral side wall 3a having a laterally semi-cylindrical shape (substantially lower half of the laterally cylindrical body), and its left and right openings are closed by a substantially semi-disc-shaped side wall 3b. A substantially semicircular cutout hole 3c is formed at the center of the side wall 3b (position along the axis of the horizontal cylinder).

  Although details will be described later, a fluid flow path 13 is formed in the jacket 3 by being partitioned by a guide plate 14. The guide plate 14 is provided not only on the bottom of the jacket 3 but also on the side and / or top of the jacket 3. The upper portion of the jacket 3 includes one end portion or both end portions in the circumferential direction of the peripheral side wall 3a of the jacket 3 (in other words, the front and rear end portions or both end portions of the jacket 3), and one end portion in the left and right direction or upper portions on both sides. Any one or more (typically left and right ends or both front and rear ends) are included.

  Each guide plate 14 is formed of a flat plate in the present embodiment, but may be formed of a flat plate member having unevenness according to circumstances. Each guide plate 14 is provided to bridge the outer surface of the inner hook 2 (the peripheral side wall 2a or the side wall 2b of the inner hook 2) and the inner surface of the jacket 3 (the peripheral side wall 3a or the side wall 3b of the jacket material 3X). A drain discharge hole 14 a or a notch may be formed in the outer end portion of the plate 14. As will be described later, when intermittently welding (preferably zigzag welding) between the outer end side of the guide plate 14 and the inner surface of the jacket 3, even if a gap occurs between the welded portions, the gap is reduced. It can also be used as a gap for drain discharge.

  The fluid flow path 13 is preferably provided so as to meander in the jacket 3. At that time, the fluid flow path 13 may be provided so as to meander not only in the bottom part of the jacket 3 but also in the side part and / or the upper part and meander in the jacket 3 (preferably the entire region). Thereby, heat transfer performance can be improved.

  Moreover, it is preferable that the fluid flow path 13 is comprised as a single flow path so that a fluid can flow in one way from the one end part to the other end part. However, in addition to providing a fluid inlet / outlet at both ends of the single channel, a fluid inlet / outlet is also provided in the middle of the single channel, and which of these inlets / outlets is used to supply the fluid into the jacket 3? It is preferable that the flow of the fluid in the jacket 3 can be changed by switching the outlet / exit from which the fluid is discharged to the outside of the jacket 3.

  In the present embodiment, the fluid flow path 13 is composed of a single flow path, and upper and lower fluid inlets (first upper port 13 a and second upper port 13 b) are provided at both ends of the fluid flow channel 13 at the upper portion of the jacket 3. On the other hand, in the lower part of the jacket 3, a lower fluid inlet / outlet (a first lower port 13 c and a second lower port 13 d) is provided in the center of the fluid flow path 13. Although details will be described later, for example, it is possible to switch between supplying steam from the upper entrance (first upper port 13a and second upper port 13b) or from the lower entrance (first lower port 13c). It is said. Cooling water is supplied from the lower entrance (first lower port 13c) and discharged from the upper entrance (first upper port 13a and second upper port 13b), or one upper entrance (first upper port 13a). ) To be discharged from the other upper doorway (second upper port 13b).

  The inner hook 2 with the jacket 3 can be rotated by a predetermined angle so that the upper opening is tilted forward with the lid 12 opened. For this purpose, the inner hook 2 with the jacket 3 is rotatably supported in a state where it floats from the base 15. At that time, the left and right ends of the inner hook 2 are supported by the side frames 16 and the drive box 17 provided on the left and right sides of the base 15. Specifically, a stepped rotation shaft portion 18 is provided at the center of the left and right side walls 2 b of the inner hook 2 so as to extend outward in the left-right direction, and the left rotation shaft portion 18 is connected to the side frame 16. The upper end portion is rotatably supported by a bearing 19, and the right rotation shaft portion 18 is rotatably supported by a bearing (not shown) in the drive box 17. In FIG. 1, only the left rotation shaft portion 18 is shown. Moreover, in FIG. 1, although the inner hook 2 and the rotating shaft part 18 are shown spaced apart, in reality, both are integrated. As will be described in detail later, the inner hook 2 with the jacket 3 can be rotated with the drain discharge means 5 (that is, as a single unit).

  The inner pot 2 is provided with a food stirring device 20 as desired. In this embodiment, as shown in FIGS. 2 and 3, a stirring shaft 21 is provided so as to bridge the left and right sides of the inner hook 2, and the stirring shaft 21 is provided with an arm 22 extending radially outward. A stirring blade 23 is provided. The stirring shaft 21 is disposed along the axis of the inner hook 2 and is rotatably supported by a bearing 24 provided outside the left and right side walls 2b of the inner hook 2. The agitation shaft 21 has an extension portion on the right side of the right bearing 24, and the extension portion is connected to a drive device (not shown) in the drive box 17. The agitation shaft 21 and thus the agitation blade 23 can be rotated by the drive device in the drive box 17. The drive box 17 is provided with a controller (not shown) in addition to the various operation buttons 25 and the touch panel 26. By operating the drive box 17, the lid member 12 can be opened and closed with respect to the inner hook 2 and the inner hook 2 can be rotated.

  Of the left and right rotating shaft portions 18 of the inner hook 2, the right rotating shaft portion 18 has a cylindrical shape, and the stirring shaft 21 is passed through the hollow hole. The rotating shaft portion 18 and the stirring shaft 21 are connected to a drive device in the drive box 17. On the other hand, the left rotating shaft 18 is formed in a cylindrical shape on the inner hook 2 side, and the end of the stirring shaft 21 is supported through a bearing 24 in the hollow hole. The left rotary shaft 18 is provided with a common pipe 59 and a unified discharge path 55 which will be described later.

  The steam supply means 4 supplies steam into the jacket 3. In this embodiment, steam can also be supplied into the inner pot 2. Specifically, the steam supply means 4 sends the steam from the steam supply port (boiler connection port) to the jacket 3 and / or the steam supply passage 27 via the rotary joint (knuckle joint) 28 and the rotary shaft portion 18. Supply to the inner hook 2 is possible. The steam supply passage 27 is provided with a steam supply cutoff valve 29 on the upstream side of the rotary joint 28. On the other hand, the piping configuration on the downstream side of the rotary shaft portion 18 among the piping configurations for steam supply to the jacket 3 and the inner hook 2 is as follows.

  That is, the jacket supply path 30 from the rotating shaft portion 18 is branched into the lower flow path 32 and the upper flow path 33 after passing through the jacket pressure control valve 31. The lower flow path 32 is connected to the first lower port 13c of the jacket 3 via the lower valve 34, while the upper flow path 33 is connected to the first upper port of the jacket 3 via the upper valve 35. 13a. The first upper port 13 a and the second upper port 13 b of the jacket 3 are connected via a communication path 36, and a communication valve 37 is provided in the communication path 36. In the illustrated example, the upper flow path 33 downstream (on the jacket 3 side) of the upper valve 35 and the first upper port 13 a are connected by a communication path 36. Further, in this embodiment, the jacket supply passage 30 is provided with an inner hook supply passage 38 branched into the inner hook 2 on the upstream side (rotating shaft portion 18 side) of the jacket pressure control valve 31. The inner hook supply passage 38 is provided with an inner hook valve 39.

  The drain discharge means 5 discharges the condensed water (drain) of the steam supplied into the jacket 3. Specifically, the drain discharge means 5 is connected to the drain tank 40 that stores the drain, the communication path 41 between the jacket 3 and the drain tank 40, the first drain discharge path 42 from the drain tank 40, and the drain tank 40. The tank steam supply path 43 is provided.

  The drain tank 40 is provided in the lower part of the jacket 3. The drain tank 40 is literally a tank (hollow container) and is not provided with water level detection means (water level sensor, float, etc.). Therefore, it is easy to configure the drain tank 40 to be compact and to rotate integrally with the inner hook 2.

  The second lower port 13d of the jacket 3 and the drain tank 40 are connected via a communication passage 41, and a communication switching valve 44 is provided in the communication passage 41. By opening the communication switching valve 44, the drain can be discharged from the jacket 3 into the drain tank 40 by gravity.

  In the illustrated example, the first drain discharge path 42 from the drain tank 40 is provided with a first steam trap 45 and a first check valve 46 in order, and is connected to the drain discharge port via the rotary shaft portion 18 and the fixed pipe 47. Opened.

  The tank steam supply passage 43 to the drain tank 40 is provided so as to branch from the upstream side of the jacket pressure control valve 31 in the jacket supply passage 30 from the rotary shaft portion 18 to the jacket 3, and the tip portion thereof is a drain tank. 40. A tank steam supply valve 48 is provided in the tank steam supply path 43.

  In the present embodiment, a second drain discharge path 49 is branched and provided upstream of the communication switching valve 44 in the communication path 41 from the jacket 3 to the drain tank 40. In the second drain discharge passage 49, a second steam trap 50 and a second check valve 51 are provided in this order. Further, an air blow discharge path 52 is branched and provided upstream of the first steam trap 45 in the first drain discharge path 42 from the drain tank 40, and an air blow discharge valve 53 is provided in the air blow discharge path 52. And a third check valve 54 are provided in this order. The first drain discharge path 42, the second drain discharge path 49, and the air blow discharge path 52 are merged downstream of the check valves 46, 51, 54 to form a unified discharge path 55. And is opened to a drain outlet through a fixed pipe 47.

  When heating the food in the inner pot 2 with pressurized steam (saturated steam of 100 ° C. or higher) with the inside of the jacket 3 at atmospheric pressure or higher, the communication switching valve 44, the tank steam supply valve 48 and the air blow discharge valve 53 should be closed. That's fine. As a result, the drain from the jacket 3 is discharged to the outside through the second drain discharge path 49. If the communication switching valve 44 is opened, the drain can be discharged also through the first drain discharge path 42.

  On the other hand, when the food in the inner pot 2 is heated by vacuum steam (saturated steam of less than 100 ° C.) with the inside of the jacket 3 being less than atmospheric pressure, drainage may not be performed smoothly only by providing a steam trap. . However, according to the drain discharge means 5 of the present embodiment, as will be described in detail later, after the drain is transferred from the jacket 3 to the drain tank 40, the tank steaming valve 48 is opened with the communication switching valve 44 closed. Thus, steam exceeding the atmospheric pressure can be supplied to the drain tank 40, and the drain can be smoothly discharged via the first steam trap 45.

  By the way, in the steam pot 1 of the present embodiment, the inner pot 2 with the jacket 3 can be rotated by a predetermined angle. At this time, the inner pot 2 with the jacket 3 and the drain tank 40 can rotate integrally. Configured. That is, in the inner pot 2 with the jacket 3, the drain tank 40 is disposed below the inner pot 2 with the jacket 3 in the normal state with the opening portion facing upward, and the drain tank 40 is connected via the communication path 41. Since it is connected to the jacket 3, the drain tank 40 is held in the inner hook 2 with the jacket 3, and both can be rotated together. At this time, not only the drain tank 40 but also the jacket supply path 30, the lower flow path 32, the upper flow path 33, the communication path 36, the inner pot supply path 38, the communication path 41, the tank steaming downstream of the rotating shaft portion 18. The passage 43, the first drain discharge passage 42, the second drain discharge passage 49, and the air blow discharge passage 52 can also rotate integrally with the inner hook 2.

  The compressed air supply means 6 supplies compressed air into the jacket 3. Specifically, the compressed air supply means 6 can supply compressed air from an air supply port (compressor connection port) from the compressed air passage 56 into the jacket 3 through the rotary joint 28 and the rotary shaft portion 18. It is said. An air supply valve 57 and a check valve 58 are sequentially provided in the compressed air passage 56. The compressed air passage 56 on the downstream side of each of the valves 57 and 58 is a steam supply passage 27 downstream of the steam supply cutoff valve 29 and a common pipe 59. Further, as the compressed air supply pipe from the rotating shaft portion 18 to the jacket 3, the above-described steam supply pipe (jacket supply path 30, lower flow path 32, upper flow path 33, communication path 36) is used. . The compressed air supplied into the jacket 3 is discharged to the outside through the communication path 41 and the air blow discharge path 52 by opening the communication switching valve 44 and the air blow discharge valve 53.

  The water supply / drainage means 7 supplies and drains cooling water to the jacket 3. Specifically, a water supply path 60 to the jacket 3 and a drainage path 61 from the jacket 3 are provided. The water supply path 60 is provided with a water supply valve 62, while the drainage path 61 is provided with a drainage valve 63. A steam supply path 27 downstream of the steam supply shutoff valve 29, a compressed air path 56 downstream of the air supply valve 57 and the check valve 58, and a water supply path 60 downstream of the water supply valve 62 are connected to a common pipe 59. Then, it is connected to the jacket supply path 30 through the rotary joint 28 and the rotary shaft portion 18. That is, the above-described steam supply pipes (jacket supply path 30, lower flow path 32, upper flow path 33, communication path 36) are used as the water supply pipes from the rotary shaft 18 to the jacket 3. The cooling water supplied into the jacket 3 is discharged to the outside through the drainage channel 61 by opening the drain valve 63.

  As water supply by the water supply path 60, normal temperature water (typically tap water) or cold water can be used. At this time, it may be configured to be able to supply by switching between normal temperature water and cold water. Cold water refers to water that has been cooled to a predetermined temperature (for example, 15 ° C. or lower) by a cold water production apparatus, and normal temperature water refers to water that is not cooled. For example, if a water pipe is connected to the water supply port, normal temperature water can be supplied into the jacket 3 through the water supply channel 60. On the other hand, the water supply port (water supply channel 60) and the water discharge port (drainage channel 61) may be connected to a cold water production apparatus (not shown), and cold water may be circulated between the cold water production apparatus and the cold water production apparatus. Specifically, the cold water production apparatus includes a refrigerator, and after water from the cold water tank is cooled through the evaporator of the refrigerator, the cold water manufacturing apparatus is supplied into the jacket 3 through the water supply path 60, and the drainage path 61. Is returned to the cold water tank.

  The decompression means 8 sucks and discharges the gas in the inner hook 2 and the jacket 3 to the outside. Specifically, the inner pot exhaust passage 64 from the inner pot 2 is sequentially provided with an inner pot vacuum valve 65, a heat exchanger 66 for steam condensation, a check valve 67, and a water seal vacuum pump 68. . Further, the steam supply passage 27 (common conduit 59) between the steam supply shut-off valve 29 and the rotary joint 28 and the inner pot exhaust path 64 between the inner pot vacuum valve 65 and the heat exchanger 66 are provided with a jacket. A jacket vacuum valve 70 and a check valve 71 are provided in the jacket exhaust path 69. Therefore, if the jacket vacuum valve 70 is opened with the steam supply shutoff valve 29, the air supply valve 57, and the water supply valve 62 closed, the pressure in the jacket 3 can be reduced via the common pipe 59.

  That is, the pipe line on the jacket 3 side from the connection part with the jacket exhaust path 69 in the common pipe line 59 also functions as an exhaust path from the jacket 3 depending on the situation. In other words, the steam supply path 27 connected to the steam supply source, the compressed air path 56 connected to the compressed air supply source, the water supply path 60 connected to the water supply source, and the vacuum generator (vacuum pump 68). The jacket exhaust passage 69 to be connected is gathered in a common pipe 59 and connected to the jacket 3 via the rotary shaft portion 18 of the inner hook 2. On the other hand, the decompression means 8 is configured such that the inner hook exhaust path 64 from the inner hook 2 through the inner pot vacuum valve 65 and the jacket exhaust path 69 from the jacket 3 through the jacket vacuum valve 70 merge to form a common exhaust path 72. It can also be said that the heat exchanger 66, the check valve 67, and the vacuum pump 68 are provided in this common exhaust path 72 in this order.

  The heat exchanger 66 is an indirect heat exchanger that exchanges heat without mixing the fluid in the common exhaust passage 72 (the inner exhaust passage 64, the jacket exhaust passage 69) and its cooling water. With the heat exchanger 66, the steam in the common exhaust path 72 can be cooled and condensed with cooling water. Cooling water is supplied to the heat exchanger 66 via the heat exchange water supply channel 73, and the cooling water is discharged via the heat exchange drainage channel 74. A heat exchange water supply valve 75 is provided in the heat exchange water supply channel 73.

  The vacuum pump 68 is a water seal type in this embodiment, and is operated while water called seal water is supplied as is well known. For this purpose, water is supplied to the vacuum pump 68 via the sealed water supply channel 76. The sealed water supply passage 76 is provided with a sealed water supply valve 77, and the sealed water can be supplied to the vacuum pump 68 by opening the sealed water supply valve 77. Opening and closing of the sealed water supply valve 77 is switched in conjunction with the start and stop of the vacuum pump 68.

  The water supply source to the heat exchange water supply channel 73 and the sealed water supply water channel 76 may be the same as the water supply source of the water supply channel 60 to the jacket 3. That is, the upstream part of the heat exchange water supply channel 73 and the sealed water supply water channel 76 may be a common pipe line with the upstream part of the water supply channel 60 to the jacket 3. Further, as the water supply to each of the water supply channels 60, 73, 76, only normal temperature water can be supplied or only cold water can be supplied, and normal temperature water and cold water can be switched and supplied.

  The return pressure means 9 introduces outside air into the inner pot 2 that has been depressurized to restore the pressure in the inner pot 2. Specifically, an air filter 79 and an air supply valve 80 are sequentially provided in the air supply path 78 into the inner hook 2. When the air supply valve 80 is opened in a state where the pressure in the inner hook 2 is reduced, the outside air is introduced into the inner hook 2 through the air filter 79, and the pressure in the inner hook 2 can be restored.

  The inner hook exhaust passage 64 and the air supply passage 78 are connected to the lid member 12 in this embodiment. For example, flexible piping is used for a part of the inner hook exhaust path 64 and the air supply path 78 because the lid 12 can be opened and closed with respect to the inner hook 2. Further, the lid member 12 is provided with a positive pressure release valve 81 as desired. In the case where the positive pressure release valve 81 is provided, when the pressure in the inner hook 2 exceeds the atmospheric pressure, the positive pressure release valve 81 is mechanically opened by itself to prevent pressurization in the inner hook 2.

  The steam pot 1 includes a first pressure sensor 82 that detects the pressure in the inner pot 2, a second pressure sensor 83 that detects the pressure in the jacket 3, and a temperature that detects the temperature in the first drain discharge path 42. In addition to the sensor 84, a second temperature sensor (not shown) for detecting the temperature in the inner hook 2 is further provided if desired. The first pressure sensor 82 may be provided in the inner hook exhaust path 64 between the inner hook vacuum valve 65 and the inner hook 2 in addition to being provided in the inner hook 2 or the lid member 12. The second pressure sensor 83 is provided in the jacket supply path 30 between the jacket pressure control valve 31 and the jacket 3 (before branching between the lower flow path 32 and the upper flow path 33), in addition to being provided in the jacket 3. May be. Further, the temperature sensor 84 is provided on the upstream side of the first steam trap 45 in the first drain discharge path 42 from the drain tank 40 (upstream side of the branch portion with the air blow discharge path 52). Therefore, the drain tank 40 may be provided.

  The control means is a controller (not shown) that controls the means 4 to 9 and the like based on the detection signals of the sensors 82 to 84 and the elapsed time. Specifically, a driving device that rotates the inner pot 2 or the stirring shaft 21 or attaches / detaches the lid 12, a vacuum pump 68, a steam supply shutoff valve 29, a jacket pressure control valve 31, a lower valve 34, and an upper valve 35. , Communication valve 37, inner hook valve 39, communication switching valve 44, tank steam supply valve 48, air blow discharge valve 53, air supply valve 57, water supply valve 62, drain valve 63, inner pot vacuum valve 65, jacket vacuum valve 70, In addition to the heat exchange water supply valve 75, the sealed water supply valve 77, the air supply valve 80, the first pressure sensor 82, the second pressure sensor 83, the temperature sensor 84, and the like are connected to a controller. Then, as will be described later, the controller can perform cooking of the food in the inner pot 2 and subsequent cooling in accordance with a predetermined procedure (program).

Next, the jacket 3 of the steam pot 1 of the present embodiment will be described more specifically.
As described above, the jacket 3 includes a side wall 3a that is substantially semi-cylindrical in the horizontal direction (substantially lower half shape of the horizontal cylinder), and the left and right openings are closed by the substantially semi-disk-shaped side wall 3b. A substantially semicircular cutout hole 3c is formed at the center of the side wall 3b (position along the axis of the horizontal cylinder). A plurality of guide plates 14 extending in the left-right direction are provided in the jacket 3 so as to be separated in the front-rear direction (in the illustrated example, separated in the circumferential direction of the peripheral side wall 3a of the inner hook 2 and the jacket 3). A plurality of channels extending in the left-right direction are formed, and communication ports 14b for communicating adjacent channels are alternately provided in the upper part of the left and right side portions of the jacket 3, thereby forming a single channel. A fluid flow path 13 is formed. A single flow path is a flow path that allows a fluid to flow in one direction from one end to the other end, and is a flow path that does not collide with fluid retention or fluid with different flow directions. is there. Typically, the flow path does not include a parallel flow path between both ends, but a partition may be partially inserted as described later.

  More specifically, in the present embodiment, the side wall 2a of the inner hook 2 and the peripheral side wall 3a of the jacket 3 are substantially concentric in a side view (attached state of the jacket 3 to the inner hook 2) shown in FIG. Placed in. A plurality of guide plates 14 are provided on the peripheral side wall 3a of the jacket 3 so as to extend inward (extend radially inward in the illustrated example) at substantially equal intervals in the circumferential direction. As shown in FIGS. 2 and 4, each guide plate 14 is provided so as to extend in the left-right direction of the jacket 3. At this time, it is formed in a substantially U shape so as to fill a gap between the outer surface of the inner hook 2 and the inner surface of the jacket 3 (a gap between the peripheral side walls 2a and 3a and a gap between the side walls 2b and 3b). That is, each guide plate 14 is formed of a long and narrow rectangular main body piece 14c extending in the left-right direction, and an extended piece 14d connected to both left and right ends thereof. The main body piece 14c and the extending piece 14d have their inner end abutted against the outer surface (the peripheral side wall 2a and the side wall 2b) of the inner hook 2, and the outer end side the inner surface (the peripheral side wall 3a and the side wall 3b) of the jacket 3. ).

  However, on one side of the left and right extending pieces 14 d, a communication port 14 b is formed by cutting out the tip (upper end), and this communication port 14 b extends from the front of the jacket 3 to the rear. When viewed, the left and right are alternately arranged. That is, in FIG. 4, the guide plate 14 arranged on the most front side is cut out at the upper left portion to form a communication port 14 b, and the second guide plate 14 from the front is cut out at the upper right portion. As a result, a communication port 14b is formed, and the third guide plate 14 from the front is cut off at the upper left to form a communication port 14b. 14b is formed.

  In the present embodiment, the outer end side of each guide plate 14 is fixed to the jacket 3 by welding. At this time, it is preferable that the outer end sides of the guide plates 14 are intermittently welded to the inner surface of the jacket 3 (that is, the welded portions applied to the outer end sides of the guide plate 14 are spaced apart). More preferably, the guide plate 14 is intermittently welded along the longitudinal direction of the guide plate 14 on the front surface (surface disposed forward) and the back surface (surface disposed rearward). Moreover, it is preferable that the front surface side welded portion and the back surface side welded portion are arranged in a staggered manner. That is, the front surface side welded portion is provided with a gap along the outer end side of the guide plate 14, and the back surface side welded portion is provided corresponding to the non-welded portion between the adjacent front surface side welded portions. And it is preferable that the front surface side welded part and the back surface side welded part are spaced apart in the longitudinal direction of the guide plate 14. That is, even when viewed as a whole of the front surface side welded portion and the back surface side welded portion, each welded portion is intermittently disposed on the outer end side of the guide plate 14. By welding intermittently (preferably in a zigzag manner), distortion during welding can be suppressed. Further, as will be described later, even if a gap is formed between the outer end side of the guide plate 14 and the inner surface of the jacket 3, the gap can also be used as a drain discharge gap.

  The jacket 3 provided with the guide plate 14 in this way is attached so as to cover the lower region of the inner hook 2. At this time, the jacket 3 has the cutout holes 3c in the left and right side walls 3b fitted into the lower half of the rotary shaft portion 18 of the inner hook 2, and the jacket 3 is welded to the rotary shaft portion 18 along the cutout holes 3c. In addition, the jacket 3 is fixed by welding at the upper end portions of the peripheral side wall 3a and the left and right side walls 3b (locations other than the cutout hole 3c) to the inner hook 2 or a closing plate (flange) provided thereon (FIG. 3). ). As a result, a substantially semi-cylindrical hollow portion is provided in a substantially lower half portion of the inner hook 2, and the fluid flow path 13 is formed in which the hollow portion is partitioned by the guide plate 14 and meanders. In the present embodiment, the flow passage cross-sectional area of the fluid flow passage 13 is formed to be equal to or larger than the flow passage cross-sectional area of the common pipe 59 and the jacket supply passage 30 by a set ratio.

  When the jacket 3 is attached to the inner hook 2, the inner end sides of the guide plates 14 (the upper side of the main body piece 14 c and the inner side of the left and right extending pieces 14 d) come into contact with the outer surface of the inner hook 2. (Or close to each other with a slight gap (for example, 10 mm or less, preferably 5 mm or less, a gap of about 0 to 2 mm in this embodiment)), and the upper ends of the left and right sides of the extension piece 14d (the side opposite to the communication port 14b) The side is brought into contact with the outer peripheral surface of the rotary shaft portion 18 of the inner hook 2. By providing the guide plate 14, not only the desired fluid flow path 13 can be formed in the jacket 3, but also heat transfer from the jacket 3 to the inner hook 2 can be promoted. In the present embodiment, the guide plate 14 can be easily installed in the jacket 3 by providing the flat guide plate 14 along the axial direction of the inner hook 2. In addition, also in the second modification and the second embodiment described later, the guide plate 14 can be easily installed in the jacket 3 by using the flat guide plate 14.

  Here, after each guide plate 14 is provided inside the jacket 3, the jacket 3 with the guide plate 14 is attached to the inner hook 2, but instead of or in addition to this, part or all of The guide plate 14 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 14. Even when the guide plate 14 is welded to the inner hook 2, the welding is preferably performed intermittently, preferably alternately in a staggered manner, as in the case of welding the guide plate 14 to the jacket 3. Then, with the jacket 3 attached to the inner hook 2 with the guide plate 14, the outer end side of the guide plate 14 abuts (that is, is placed in contact with) the inner surface of the jacket 3 or close (for example, a gap generated for manufacturing). To be placed). Even if there is a gap between the outer edge of the guide plate 14 and the inner surface of the jacket 3, the gap can be used as a drain discharge gap.

  As described above, the jacket 3 is provided with a plurality of fluid inlets and outlets. In the present embodiment, a first upper port 13 a and a second upper port 13 b are provided in the upper part of the jacket 3, and a first lower port 13 c and a second lower port 13 d are provided in the lower part of the jacket 3. The first upper port 13a and the second upper port 13b are provided at both ends of a single meandering fluid flow path 13 partitioned by the guide plate 14, and the first lower port 13c and A second lower port 13d is provided. In the present embodiment, the first upper port 13 a is disposed at the rear part (back side) of the jacket 3, and the second upper port 13 b is disposed at the front part (front side) of the jacket 3.

  By the way, each guide plate 14 has a drain discharge gap (for example, intermittent welding) between the outer end side of the guide plate 14 and the inner surface of the jacket 3, particularly for the main body piece 14 c extending in the left-right direction. It is preferable that a drain discharge hole 14 a or a notch is formed in the outer end portion of the guide plate 14. In the example of illustration, the example which formed the some hole 14a along the longitudinal direction of the main-body piece 14c in the outer end part of the main-body piece 14c is shown. During steaming into the jacket 3, on the left and right sides of the jacket 3, the drain is caused to flow downward along the side walls 3 b of the inner pot 2 and the jacket 3 in addition to the extending pieces 14 d of the guide plate 14. Can do. On the other hand, on the peripheral side walls 2a and 3a of the jacket 3, the drain is made to flow to the lowermost portion (second lower opening 13d) of the jacket 3 through a gap, a hole 14a or a notch provided in the outer end portion of the main body piece 14c. be able to. In addition, by forming these gaps, holes 14a or notches in the guide plate 14, not only draining but also air discharging in an air exhausting process described later can be achieved.

Next, a specific example of the operation method of the steam cooker 1 of the present embodiment will be described.
FIG. 5 is a table showing the main steps of the steam cooker 1 of the present embodiment and the opening / closing states of the main valves in each step. In the figure, ◯ indicates the open state of the valve, and X indicates the closed state of the valve.

  Before the start of operation, at least the steam supply shutoff valve 29, the air supply valve 57, the water supply valve 62, the heat exchange water supply valve 75, and the sealed water supply valve 77 are closed. The vacuum pump 68 is stopped. When the start of operation is instructed, for example, when a predetermined start button is pressed, the controller typically executes an air exclusion process, a heating process, and a cooling process sequentially. Preferably, an air exclusion process, a heating process (first heating process and / or second heating process), a first air blowing process, a cooling process (first cooling process and / or second cooling process), and a second air blowing process are sequentially performed. To run. However, the operation process is not limited to the following specific examples, such as omitting the first air blowing process.

  The food is put into the inner pot 2 before the start of operation or before the start of the heating process at the latest. When cooking in the inner pot 2 under a vacuum, the upper opening of the inner pot 2 is hermetically closed by the lid 12 after the food is put into the inner pot 2.

  In the air removal step, the air in the jacket 3 and the drain tank 40 is removed by the decompression means 8. Specifically, the jacket vacuum valve 70, the jacket pressure control valve 31, the lower valve 34, the upper valve 35 and the communication valve 37 are opened while the steam supply shutoff valve 29, the air supply valve 57 and the water supply valve 62 are closed. Then, the pressure reducing means 8 is operated (that is, water is passed through the heat exchanger 66 and the vacuum pump 68 is operated), and the gas in the jacket 3 is sucked and discharged to the outside. At this time, the air blow discharge valve 53, the drain valve 63, the inner hook vacuum valve 65, and the inner hook valve 39 are closed, and the communication switching valve 44 (and / or the tank steaming valve 48) is opened. Thereby, not only the inside of the jacket 3 but also the air in the drain tank 40 can be excluded. After the inside of the jacket 3 has been depressurized to a predetermined pressure, the pressure is preferably further maintained for a predetermined time, and then the jacket vacuum valve 70 is closed and the depressurizing means 8 is stopped to proceed to the next step. However, the content of the air exclusion process is not limited to this, and, for example, the decompression in the jacket 3 by the decompression means 8 and the steam supply into the jacket 3 by the steam supply means 4 may be repeated predetermined.

  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, after the steam supply shut-off valve 29 is opened and steamed into the jacket 3, the inside of the jacket 3 is set to a set heating pressure (the jacket 3 is filled with saturated steam, so it can also be referred to as a set heating temperature). By keeping this state, the food in the inner pot 2 is heated. For example, the opening / closing or opening degree of the jacket pressure control valve 31 may be adjusted so that the detected pressure of the second pressure sensor 83 is maintained at the set heating pressure (pressure at which the heating target temperature of the food is saturated). At this time, the food in the inner pot 2 can be heated at a relatively low temperature of less than 100 ° C. (for example, 60 ° C. or more and less than 100 ° C.) with the inside of the jacket 3 set to a pressure lower than atmospheric pressure. In the heating step, the communication switching valve 44 and the tank steam supply valve 48 are kept closed except in the case described later.

  One or both of the first heating process and the second heating process can be performed as the heating process. For example, the first heating step and the second heating step are repeated every set switching time (for example, 5 minutes). Or you may repeat the operation | movement which performs a 1st setting time for the 1st heating process, and the operation | movement which performs a 2nd heating process for the 2nd setting time. Or only a 1st heating process may be performed or only a 2nd heating process may be performed.

  In the first heating step, steam is supplied from the upper part of the jacket 3 into the jacket 3. For this purpose, the upper valve 35 and the communication valve 37 are opened with the lower valve 34 closed. In the state where the steam supply shutoff valve 29 is opened, the temperature in the jacket 3 and thus in the inner pot 2 can be adjusted by adjusting the opening degree of the jacket pressure control valve 31. In the first heating process, even if air that could not be removed in the air removal process remains in the jacket 3 by supplying steam from the upper part of the jacket 3 (and from both ends of the fluid flow path 13) It is possible to achieve uniform heating by eliminating the heat transfer obstruction caused by the air pool (particularly the air pool at the upper part of the jacket 3).

  In the second heating step, steam is supplied from the lower part of the jacket 3 into the jacket 3. For this purpose, the lower valve 34 is opened while the upper valve 35 and the communication valve 37 are closed. In the state where the steam supply shutoff valve 29 is opened, the temperature in the jacket 3 and thus in the inner pot 2 can be adjusted by adjusting the opening degree of the jacket pressure control valve 31. In the second heating step, the communication valve 37 may be opened as desired. In the second heating step, by supplying steam from the lower part of the jacket 3 (and from the center of the fluid flow path 13), it is easy to supply the steam to both ends of the fluid flow path 13, and uniform heating can be achieved. it can. By repeating the first heating step and the second heating step alternately, the overheating region can be eliminated and more uniform heating can be achieved.

  During the heating process (the first heating process and the second heating process), the condensed water (drain) of the steam supplied into the jacket 3 is a gap between the outer end side of the guide plate 14 and the inner surface of the jacket 3, or the guide plate. 14 flows down to the bottom of the jacket 3 through a hole 14a or a notch provided in the outer end of the jacket 14 and is appropriately discharged from the second lower opening 13d. Specifically, it is as follows.

  First, the drain in the jacket 3 is discharged to the drain tank 40 at a predetermined timing. The drainage from the jacket 3 to the drain tank 40 is performed by opening the communication switching valve 44 with the tank steam supply valve 48 closed. In the present embodiment, the drain in the jacket 3 is discharged to the drain tank 40 by opening the communication switching valve 44 for a predetermined time every set time. Thereafter, by closing the communication switching valve 44 and opening the tank steam supply valve 48, the drain in the drain tank 40 is discharged to the outside through the first steam trap 45 by steam having a pressure higher than atmospheric pressure. Can do. After the tank steam supply valve 48 is opened, when the temperature detected by the temperature sensor 84 becomes equal to or higher than the set temperature (preferably, the second specified time elapses after the set temperature is exceeded for the first specified time), the drain is discharged from the drain tank 40. As it is discharged, the tank steam supply valve 48 is closed. Thereafter, similarly, the communication switching valve 44 may be opened for a predetermined time after the previous closing, and then the tank steaming valve 48 may be opened with the communication switching valve 44 closed. In this manner, drainage can be periodically performed from the jacket 3 through the drain tank 40.

  In the present embodiment, the drain of vacuum steam (steam of less than 100 ° C.) in the jacket 3 is discharged to the drain tank 40, and the drain is discharged from the drain tank 40 to the atmospheric pressure or higher via the tank steam supply path 43. Of steam (steam of 100 ° C. or higher) is used. Therefore, the discharge of the drain from the drain tank 40 can be detected by the temperature detected by the temperature sensor 84 provided in the first drain discharge path 42 (for example, when the temperature detected by the temperature sensor 84 is 100 ° C. or higher). . Thereby, drainage from the drain tank 40 can be easily and reliably achieved.

  By the way, although the example which heats foodstuffs below 100 degreeC by making the inside of the jacket 3 less than atmospheric pressure was shown here, foodstuff can also be heated above 100 degreeC by making the inside of the jacket 3 atmospheric pressure or more. Even in that case, it can be controlled in the same manner as each heating step described above, but the draining method is different. That is, while heating food using pressurized steam of 100 ° C. or higher, drain can be discharged through the second steam trap 50 even when the communication switching valve 44 and the tank steam supply valve 48 are closed. Furthermore, if the communication switching valve 44 is kept open, the drain can be discharged also through the first steam trap 45.

  The steam pot 1 of this embodiment includes a food stirring device 20 in the inner pot 2. That is, the steam pot 1 is configured as a steam kneader. Therefore, the food can be stirred by the stirring device 20 while the food is heated by steaming into the jacket 3. Such agitation of the food can be performed not only in the heating step but also in the cooling step, and can be performed from the heating step to the end of the cooling step via the first air blowing step.

  In the steam pot 1 of the present embodiment, the upper opening of the inner pot 2 can be hermetically closed with a lid member 12, and a vacuum generator (vacuum pump 68) is connected to the lid member 12. With the material 12 closed, the inside of the inner pot 2 can be depressurized to less than atmospheric pressure by a vacuum generator. Therefore, the food can be concentrated by evacuating the food during heating. Specifically, the inner pot vacuum valve 65 may be opened with the lid 12 of the inner pot 2 closed, and the inner pot 2 may be depressurized by the pressure reducing means 8.

  In any case, when the predetermined end condition is satisfied during the heating process, the steam supply shutoff valve 29 is closed, the steam supply into the jacket 3 is stopped, and the process proceeds to the next process.

  In the first air blowing step, the compressed air is circulated in the jacket 3 by the compressed air supply means 6. Specifically, the air supply valve 57, the jacket pressure control valve 31, the upper valve 35, the communication valve 37, the communication switching valve 44, and the air blow discharge with the lower valve 34, the tank steam supply valve 48 and the drain valve 63 closed. Open the valve 53. Thereby, the compressed air from the compressed air passage 56 is supplied from the upper part of the jacket 3 (and from both ends of the fluid flow path 13), and is discharged through the communication passage 41 and the air blow discharge passage 52.

  By the first air blowing step, residual steam in the jacket 3 can be discharged, and the jacket 3 and the inner hook 2 can be cooled. After executing the set blow time and the first air blow process, the air supply valve 57, the communication switching valve 44 and the air blow discharge valve 53 are closed, and the process proceeds to the next process.

  In the cooling process, the water supply / drainage means 7 passes the cooling water through the jacket 3 to cool the food in the inner pot 2. Specifically, the water supply valve 62 and the drain valve 63 are opened and water is passed through the jacket 3 to cool the food in the inner pot 2. At this time, as described above, normal temperature water or cold water may be used as the cooling water supplied through the water supply channel 60. When using cold water, the base end part of the water supply path 60 and the front-end | tip part of the drainage channel 61 are connected to a cold water manufacturing apparatus, and cold water circulates between the jacket 3 and a cold water manufacturing apparatus. Further, at the initial stage of the cooling process (predetermined time from the start of the cooling process), it may be cooled with room temperature water and then switched to cold water.

  One or both of the first cooling process and the second cooling process can be performed as the cooling process. In particular, it is preferable to execute the second cooling process until the predetermined end condition is satisfied after the first cooling process is performed for a predetermined time from the start of the cooling process. Alternatively, only the first cooling process or only the second cooling process may be executed until a predetermined end condition is satisfied. The end condition of the cooling process is, for example, until the set cooling time elapses from the start of the cooling process or until the food in the inner pot 2 reaches the cooling target temperature.

  In the first cooling step, cooling water is supplied from the lower part of the jacket 3 and discharged from the upper part. Specifically, the lower valve 34 and the communication valve 37 are opened in addition to the water supply valve 62 and the drain valve 63. At this time, the upper valve 35, the communication switching valve 44, and the tank steam supply valve 48 are closed. Thereby, the cooling water from the water supply path 60 is supplied into the jacket 3 through the lower flow path 32 and flows from the central portion of the fluid flow path 13 in the jacket 3 to both ends, and then the first upper port 13a. And it is derived | led-out from the 2nd upper opening 13b, and is discharged | emitted to the drainage 61.

  The first cooling step is preferably performed at the start of the cooling step (that is, when cooling water is first supplied into the jacket 3 after the heating step is finished). In other words, it is preferable that the first cooling step is performed before the second cooling step. At that time, the water flow rate in the first cooling step may be smaller than the water flow rate in the second cooling step.

  According to the first cooling step, the cooling water supplied into the jacket 3 is heated by passing the cooling water upward from the lower part of the jacket 3 (particularly in the axial direction as shown in FIG. 4). In the case where the guide plate 14 is provided, the cooling water can be effectively warmed by going to the upper part while meandering, so that the thermal stress in the upper part of the jacket 3 (the jacket 3 and the first cooling that has become high temperature by the heating process). The thermal stress due to the temperature difference from the cooling water in the process) can be alleviated, and cracking of the connecting portion (welded portion) with the inner hook 2 at the upper portion of the jacket 3 can be prevented.

  In the second cooling step, cooling water is circulated from one end of the fluid flow path 13 in the jacket 3 to the other end. Specifically, the upper valve 35 is opened in addition to the water supply valve 62 and the drain valve 63. At this time, the lower valve 34, the communication valve 37, the communication switching valve 44, and the tank steam supply valve 48 are closed. Thereby, the cooling water from the water supply channel 60 is supplied into the jacket 3 from the first upper port 13a via the upper channel 33, and from one end of the fluid channel 13 in the jacket 3 toward the other end. After being distributed, it is led out from the second upper port 13 b and discharged to the drainage channel 61.

  In addition, it is preferable that the flow rate of the cooling water in each cooling step (particularly the second cooling step) is about 1 m / sec or more. Thereby, the pressure loss in the fluid flow path 13 can be reduced. Moreover, it is preferable that the flow volume of the cooling water in each cooling process (especially 2nd cooling process) shall be 50-70 L / min or more. In particular, it is preferable to ensure 200 to 250 L / min or more at the time of a large flow rate in Modification 1 described later.

  According to the second cooling step, the cooling water is supplied from the first upper port 13 a that is one end of the fluid flow path 13 and is discharged from the second upper port 13 b that is the other end of the fluid flow path 13. Thus, the cooling water can be allowed to flow along the single flow path so that the food in the inner pot 2 can be reliably cooled without unevenness. That is, since the fluid flow path 13 as a single flow path is formed by meandering the entire inside of the jacket 3 (the lower region of the inner hook 2), by flowing cooling water from one end to the other end, There is no portion where water stays in the jacket 3 (in other words, the cooling water does not cause a short pass), and the food can be quickly cooled without unevenness.

  By the way, in the cooling process, the inside of the inner pot 2 may be opened under atmospheric pressure, or the inside of the inner pot 2 may be decompressed to be used in combination with vacuum cooling of food. When the food is vacuum-cooled, the inner pot vacuum valve 65 is opened with the lid 12 closed, and the pressure reducing means 8 is operated to depressurize the inner pot 2. Thereby, moisture evaporation from the food can be promoted, and the food can be cooled by the latent heat of vaporization.

  In the second air blowing step, compressed air is circulated in the jacket 3 in the same manner as in the first air blowing step. Specifically, the air supply valve 57, the jacket pressure control valve 31, the upper valve 35, the communication valve 37, the communication switching valve 44, and the air blow discharge valve 53 are opened with the lower valve 34 and the drain valve 63 closed. Thereby, the compressed air from the compressed air passage 56 is supplied from the upper part of the jacket 3 (and from both ends of the fluid flow path 13), and is discharged through the communication passage 41 and the air blow discharge passage 52. In particular, in the second air blowing step, the water that has entered the tank steam supply passage 43 can be discharged by opening the tank steam supply valve 48.

  Residual water in the jacket 3 can be discharged by the second air blowing step, and water hammer during the next steaming (heating step) can be prevented. After executing the set blow time and the second air blow step, at least the air supply valve 57 is closed.

  Thereafter, when the inner pot 2 is under vacuum, the lid 12 may be opened in a state where the air supply valve 80 is opened and the pressure is restored to atmospheric pressure. In this state, the inner hook 2 can be rotated to direct the opening downward, so that the food can be easily discharged from the inner pot 2.

Next, modification 1 of the steam cooker 1 of the present embodiment will be described.
In the above-described embodiment, the cooling water is supplied into the jacket 3 through the common pipe 59 with the steam and the compressed air. Supply into the jacket 3 may be possible.

  For example, as indicated by a two-dot chain line in FIG. 1, a first water supply path 85 is connected to the lower portion of the jacket 3 to the second lower port 13d (or the communication path 41 connected thereto), while A second water supply path 86 is connected to the upper port 13a. The first water supply path 85 is provided with a first water supply valve 87, while the second water supply path 86 is provided with a second water supply valve 88. The first water supply passage 85 and the second water supply passage 86 are articulated via a rotary joint (not shown) so that the inner hook 2 can be rotated and the opening can be directed downward. It is piped.

  In the first modification, the second water supply path 86 has a larger diameter than the first water supply path 85 (and the common pipe 59 and the jacket supply path 30 as the water supply pipes in the above-described embodiment). Therefore, the water supply flow rate when the second water supply valve 88 is opened is larger than the water supply flow rate when the first water supply valve 87 (or the water supply valve 62) is opened.

  In the case of the first modification, in the first cooling step, the first water supply valve 87, the communication valve 37 and the drain valve 63 are opened, and the cooling water flows upward from the lower part of the jacket 3 to drain from the drainage channel 61. Further, in the second cooling step, the second water supply valve 88 and the drain valve 63 are opened, and the cooling water is allowed to flow from one end portion to the other end portion of the fluid flow path 13 in the jacket 3 to be drained from the drain passage 61. In the second cooling step, the food can be cooled more quickly by flowing a large amount of water. Other configurations and controls are the same as those in the above embodiment, and thus the description thereof is omitted.

Next, modification 2 of the steam cooker 1 of the present embodiment will be described.
FIG. 6 is a schematic perspective view showing a modification of the jacket 3 shown in FIG. 4 and shows a state in which a guide plate 14 for forming the fluid flow path 13 is attached.

  In the above-described embodiment, when the jacket 3 is attached to the inner hook 2, guide plates 14 are provided in the jacket 3 in a substantially radial manner in a side view, and each guide plate 14 is provided along the left-right direction in a front view. It was. On the other hand, in the second modification, as shown in FIG. 6, guide plates 14 are provided in the jacket 3 so as to be spaced from each other at substantially equal intervals in the front view, and each guide plate 14 extends back and forth. At the same time, it is formed in a substantially semicircular arc shape in side view.

  At this time, each guide plate 14 is provided so as to fill a gap between the outer surface of the inner hook 2 and the inner surface of the jacket 3 (a gap between the peripheral side walls 2a and 3a). That is, each guide plate 14 is provided such that the inner peripheral edge is in contact with the outer surface (circumferential side wall 2a) of the inner hook 2 and the outer peripheral edge is in contact with the inner surface (peripheral side wall 3a) of the jacket 3. Thereby, a plurality of flow paths along the circumferential direction of the jacket 3 are formed between the adjacent guide plates 14 or between the guide plates 14 and the side walls 3b. However, the fluid flow path 13 is formed as a single flow path by providing the communication ports 14b for communicating adjacent flow paths alternately at the front and rear of the jacket 3 in the front and rear. That is, in FIG. 6, the guide plate 14 arranged on the leftmost side is notched at the front upper portion to form a communication port 14 b, and the second guide plate 14 from the left is notched at the rear upper portion. A communication port 14b is formed, and the third guide plate 14 from the left is cut out at the front upper portion to form a communication port 14b, and so on. Is formed.

  In this manner, a fluid flow path 13 as a meandering single flow path is formed in the jacket 3, and the first upper port 13a and the fluid flow path 13 are formed at both ends of the fluid flow path 13 in the same manner as in the above-described embodiment. While the second upper port 13b is provided, the first lower port 13c and the second lower port 13d are formed in the central portion of the fluid flow path 13 (lower portion of the jacket 3), although not shown, as in the above-described embodiment. Is provided. The jacket 3 of the second modification is also provided in the inner hook 2 in the same manner as in the above embodiment, and the configuration and control of the steam pot 1 configured in this way are the same as in the above embodiment, and thus the description thereof is omitted. To do.

  In the case of the second modification as well, a gap is provided between the outer end side of the guide plate 14 and the inner surface of the jacket 3 in order to facilitate drain discharge, or a hole is formed in the outer end portion of the guide plate 14. Alternatively, a notch may be provided (not shown), but the gap, hole, or notch may be provided only at a position corresponding to the bottom portion (near the lowermost portion) of the jacket 3 in the guide plate 14.

  FIG. 7 is a schematic front view showing the steam pot 1 according to the second embodiment of the present invention. FIG. 8 is a schematic cross-sectional view showing an example of the jacket 3 used in the steam pot 1 of the second embodiment, and shows a state in which a guide plate 14 for forming the fluid flow path 13 is attached. .

  The steam pot 1 of the second embodiment is basically the same as the first embodiment. Therefore, below, it demonstrates centering around a different point of both, and attaches | subjects and demonstrates the same code | symbol to a corresponding location.

  The steam pot 1 of the second embodiment is different from the first embodiment in the shapes of the inner pot 2 and the jacket 3. In the second embodiment, the inner hook 2 is a vertically-oriented substantially cylindrical shape whose axis is arranged in the vertical direction, and its lower end is closed by a bottom wall 2d that bulges downward in a substantially arc shape, An opening is formed upward. Also in the second embodiment, the inner hook 2 can be opened and closed by the lid member 12 at the upper opening. Further, the inner hook 2 is configured to be rotatable by a predetermined angle so that the upper opening is tilted forward with the lid 12 being opened. In addition, the peripheral side wall of the vertically-oriented substantially cylindrical inner hook 2 may be formed on 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, like the first embodiment, steam, compressed air, or cooling water can be switched and supplied. In this embodiment, the jacket 3 (more specifically, the jacket material 3X) includes a vertically-oriented substantially cylindrical peripheral side wall 3a, and its lower end bulges downward in a substantially arc shape (that is, substantially hemispherical). It is blocked by the bottom wall 3d. Further, a substantially semicircular cutout hole 3c is formed in the upper part of the peripheral side wall 3a of the jacket 3 along the radial direction (along the horizontal direction in FIG. 8).

  In the jacket 3, as in the first embodiment, the fluid flow path 13 is formed by being partitioned by the guide plate 14. In the second embodiment, guide plates 14 are provided substantially radially in a side view, and each guide plate 14 is provided in the left-right direction in a front view. At this time, each guide plate 14 bridges the outer surface of the inner hook 2 (the peripheral side wall or bottom wall 2d of the inner hook 2) and the inner surface of the jacket 3 (the peripheral side wall 3a or the bottom wall 3d of the jacket material 3X). Provided. In addition, each guide plate 14 is formed with a communication port 14b by notching the upper ends on the left and right sides. The communication ports 14 b are alternately arranged on the left and right when the guide plates 14 are viewed from the front to the rear of the jacket 3. As a result, a fluid flow path 13 is formed in a meandering manner in the jacket 3, and the first upper port 13a and the second upper port 13b are provided at both ends of the fluid flow channel 13 (upper portion of the jacket 3). The first lower port 13c and the second lower port 13d are provided at the center of the fluid flow path 13 (lower portion of the jacket 3).

  By the way, in the present Example 2, since the bottom wall 2d of the inner hook 2 is made into a substantially hemispherical shape, according to this, the jacket 3 may also be simply made into a substantially hemispherical shape as a whole. In addition, because the bottom wall 2d of the inner hook 2 is substantially hemispherical, the extending direction of each guide plate 14 is not limited to the left-right direction, but can be arranged in any direction such as the front-rear direction. Therefore, the structure of the jacket 3 and the guide plate 14 can be said as follows. That is, a plurality of guide plates 14 extending in one direction are provided in the jacket 3 so as to be separated in a direction orthogonal to the one direction, thereby forming a plurality of flow paths extending in one direction of the inner hook 2. At the same time, the communication channels 14b for communicating adjacent channels are alternately provided at both ends in the longitudinal direction of the guide plate 14 in the upper part of the jacket 3, whereby the fluid channel 13 is formed as a single channel. Other configurations and controls are the same as those in the first embodiment (including the modified example), and thus the description thereof is omitted.

  The steam cooker 1 of the present invention is not limited to the configuration (including control) of each of the above embodiments, and can be changed as appropriate. In particular, (a) an inner pot 2 in which food is stored, (b) a jacket 3 provided outside the inner pot 2 and capable of supplying steam or cooling water by switching, and (c) in the jacket 3 It is a member that partitions the inside of the jacket 3 so as to form the fluid flow path 13, and bridges the outer surface of the inner hook 2 and the inner surface of the jacket 3 on the side of the jacket 3 or the top of the jacket 3 in addition to the bottom of the jacket 3. If it is provided with the guide plate 14 provided in such a manner, other configurations can be appropriately changed.

  For example, in each of the above embodiments, the guide plate 14 spans the shortest distance between the outer surface of the inner hook 2 and the inner surface of the jacket 3 (for example, perpendicular to the tangential line of the cross section of the jacket 3 in FIG. 3). ), Or simply in the vertical direction and / or horizontal direction.

  Further, the shape and number of the guide plates 14 provided in the jacket 3 can be changed as appropriate. In addition, it is possible to appropriately change in which location the fluid inlet / outlet is provided and how the fluid flows with respect to the fluid flow path 13 formed by the guide plate 14. Moreover, as the fluid flow path 13, a single flow path may be formed, or two or more single flow paths may be combined. When multiple single flow paths are provided, multiple inlets and multiple outlets each reduce the temperature difference between the fluid inlet and outlet in each single flow path, and make the temperature of the heat transfer surface uniform. it can. In addition, even if a partition along the flow direction (partition of the cross section of the flow path) is provided in the single flow path, if the flow in substantially the same direction is divided, this can also be referred to as a single flow path. .

  When one or a plurality of single flow paths are provided as the fluid flow path 13, each single flow path is provided with one or more cooling water inlets and outlets, and the most downstream cooling water inlet to the most upstream side. In the fluid flow path (each single flow path) up to the cooling water outlet, the guide plate 14 may be provided so that the flow rate of the cooling water is the same regardless of the location. In other words, for each single flow path, even if there are a plurality of cooling water inlets on the upstream side or a plurality of cooling water outlets on the downstream side, the most upstream cooling from the most downstream cooling water inlet In the fluid flow path to the water outlet, the cooling water flow rate should be equal regardless of the location. Thereby, at least in the section from the cooling water inlet on the most downstream side to the cooling water outlet on the most upstream side, there is no bypass of the cooling water, and the food can be cooled according to the flow rate of the cooling water.

  Further, as in the second embodiment, in the case of a round-shaped hook having a bottomed vertical substantially cylindrical shape in which the inner hook 2 is opened upward, it may be configured as follows. That is, in a state where the jacket 3 is attached to the inner hook 2, a substantially spiral cylindrical guide plate 14 is disposed on the bottom surface of the inner hook 2, or a substantially concentric cylindrical guide plate partially cut away. 14 may be arranged. In this case, for example, a substantially annular (substantially flat plate) guide plate 14 that is partially cut away is arranged on the peripheral side surface of the inner hook 2 so as to be separated from each other in the vertical direction, or a spiral guide plate. 14 is arranged, or guide plates 14 are arranged radially (substantially flat) in plan view.

  In each of the above embodiments, the installation of the compressed air supply means 6 may be omitted, or the installation of the decompression means 8 may be omitted. Further, even when the decompression means 8 is installed, the configuration is not limited to the above-described embodiments. For example, a steam ejector is added upstream of the heat exchanger 66, or a water ejector is used instead of the vacuum pump 68. May be.

  Further, in each of the above-described embodiments, the steam pot 1 is a steam kneader including the food stirring device 20, but the installation of the stirring device 20 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)
DESCRIPTION OF SYMBOLS 4 Steam supply means 5 Drain discharge means 6 Compressed air supply means 7 Supply / drainage means 8 Depressurization means 9 Restoration means 12 Cover material 13 Fluid flow path (13a: First upper port, 13b: Second upper port, 13c: First lower Direction, 13d: second lower exit)
14 Guide plate (14a: hole, 14b: communication port, 14c: body piece, 14d: extension piece)
DESCRIPTION OF SYMBOLS 18 Rotating shaft part 20 Stirring device 27 Steam supply path 28 Rotary joint 29 Steam supply shutoff valve 30 Jacket supply path 31 Jacket pressure control valve 32 Lower flow path 33 Upper flow path 34 Lower valve 35 Upper valve 36 Connection path 37 Connection valve 40 Drain Tank 41 Communication passage 42 First drain discharge passage 43 Tank steam supply passage 44 Communication switching valve 45 First steam trap 48 Tank steam supply valve 49 Second drain discharge passage 50 Second steam trap 52 Air blow discharge passage 53 Air blow discharge valve 56 Compression Air path 57 Air supply valve 60 Water supply path 61 Drainage path 62 Water supply valve 63 Drainage valve 85 First water supply path 86 Second water supply path 87 First water supply valve 88 Second water supply valve

Claims (13)

An inner pot for food,
A jacket provided on the outside of the inner pot and capable of supplying steam or cooling water by switching;
A member for partitioning the inside of the jacket so as to form a fluid flow path in the jacket; in addition to a bottom portion of the jacket, an outer surface of the inner hook and an inner surface of the jacket at a side portion of the jacket or an upper portion of the jacket A steam cooker comprising: a guide plate provided so as to span the bridge. The steam pot according to claim 1, wherein the guide plate is provided in the jacket so as to form a flow path meandering in the jacket to form the fluid flow path. As the fluid flow path, one or a plurality of single flow paths are provided,
The steam pot according to claim 1 or 2, wherein a fluid inlet / outlet port is provided at both ends of each single flow path. As the fluid flow path, one or a plurality of single flow paths are provided,
Each of the single flow paths is provided with one or more cooling water inlets and outlets, and in the fluid flow path from the most downstream cooling water inlet to the most upstream cooling water outlet, the cooling water flow rate depends on the location. The steam cooker according to any one of claims 1 to 3, wherein the guide plate is provided so as to be the same regardless of the above. Each said guide plate was made into the flat plate shape with a flat plate or an unevenness | corrugation. The steamer of any one of Claims 1-4 characterized by the above-mentioned. The fluid flow path is provided with a fluid inlet / outlet, and cold water can be circulated in the jacket with the cold water producing apparatus via the inlet / outlet. The steam pot as described in the item. The inner hook is formed in a horizontally-oriented substantially cylindrical shape whose axis is arranged in the left-right direction, and both left and right end portions thereof are closed by side walls, and an upper portion of a horizontally-oriented substantially cylindrical peripheral side wall is opened upward. And
The jacket is provided in a lower region from a middle part in the vertical direction of the inner hook so as to cover the peripheral side wall of the inner hook and each lower region of the side wall,
In the jacket, a plurality of guide plates extending in the left-right direction are provided apart from each other in the front-rear direction, so that a plurality of flow paths extending in the longitudinal direction of the inner hook are formed, and adjacent flow paths are provided. The fluid flow path is formed as a single flow path by providing a communication port for communicating with the left and right alternately in the upper part of the jacket on the left and right sides of the inner hook. The steam kettle of any one of -6. The inner hook is a vertically-oriented substantially cylindrical shape whose axis is arranged in the vertical direction, and the lower end thereof is closed by a bottom wall that bulges downward in a substantially arc shape, and is formed to open upward. And
The jacket is provided in a lower region from the middle in the vertical direction of the inner hook so as to cover at least the bottom wall of the inner hook.
In the jacket, a plurality of guide plates extending in one direction are provided apart from each other in a direction orthogonal to the one direction, so that a plurality of flow paths extending in one direction of the inner hook are formed. The fluid flow path is formed as a single flow path by providing communication ports for communicating adjacent flow paths alternately at both ends in the longitudinal direction of the guide plate at the upper part of the jacket. The steam pot according to any one of claims 1 to 6. The steam pot according to any one of claims 1 to 8, wherein a drain discharge hole or notch is formed in an outer end portion of the guide plate. One end of the guide plate is fixed to one member of the inner hook and the jacket, and the other end of the guide plate is in contact with or close to the other member,
10. The fixing of the guide plate to the one member is performed by intermittently welding one end of the guide plate to the one member. Steam pot. The fluid flow path is formed as a single flow path,
An upper fluid inlet / outlet port is provided at both ends of the single channel at the upper portion of the jacket, and a lower fluid inlet / outlet port is provided at the central portion of the single channel at the lower portion of the jacket. The steam kettle according to any one of claims 1 to 10. It is possible to switch between supplying steam from two upper entrances or from lower entrances,
The cooling water can be switched between being supplied from a lower inlet / outlet and discharged from two upper inlets / outlets, or being supplied from one upper inlet / outlet and discharged from the other upper inlet / outlet. The steam kettle described. In the jacket, steam, cooling water or compressed air can be switched and supplied,
Compressed air is supplied from two upper doors and can be discharged from the lower doors,
Supplying steam into the jacket to heat the food in the inner pot, discharging steam through compressed air into the jacket, cooling the food in the inner pot through cooling water into the jacket, The steam pot according to claim 11 or 12, wherein the step of discharging cooling water through compressed air into the jacket is sequentially performed.

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