JP6146799B2 - Adjustment structure of steam temperature in steam heating chamber - Google Patents

Description

  The present invention relates to a structure for adjusting a steam temperature in a steam heating chamber for heating an object to be heated with steam, and in particular, from a high-temperature steam having a temperature of 100 degrees or more injected into the chamber space, It is related with the adjustment structure of the vapor | steam temperature in the vapor | steam heating chamber which becomes suitable for adjusting the atmosphere of this to the low-temperature saturated humid air state of temperature less than 100 degree | times.

  The inventors of the present invention have prepared a vegetable raw material by cooking cooking ingredients by controlling saturated humid air containing fine water droplets within a range of 90% to 100% humidity under atmospheric pressure to an appropriate temperature of less than 100. A technology that can effectively enhance the sweetness and taste of foods has been already proposed (see Patent Document 1, etc.). In order to perform such heat cooking, a cooking chamber for cooking foods in an atmosphere consisting of saturated humid air is required. As this cooking chamber, in order to reduce the influence of transportation loss, high temperature steam generated in the boiler at a temperature of 100 degrees or more is directly introduced into the warehouse, and the high temperature steam is brought into a low temperature state of less than 100 degrees in the warehouse, It is necessary to maintain the state of the saturated humid air.

Japanese Patent No. 5130363

  However, when the high-temperature steam is directly introduced into the warehouse, the vicinity region where the high-temperature steam is ejected becomes high temperature, so that the food installed in the vicinity region causes so-called steam burning and is desired using saturated humid air. It becomes impossible to cook. Therefore, the neighboring area of the internal space cannot be used for cooking, and a lot of dead space is generated in the internal space, leading to an increase in the overall size of the cooking chamber, a complicated shape, and the like. Further, in the case of the conventional structure in which the high-temperature steam is directly introduced into the internal space, it is difficult to control the temperature for making the cooking space for the food in the internal space into saturated humid air having a temperature of less than 100 degrees. For this reason, in the conventional structure, it is necessary to finely control the ejection amount of the high-temperature steam into the interior space, or expensive incidental equipment such as depressurizing the high-temperature steam is required. Further, as a conventional structure, there is one that cools the high-temperature steam supplied to the internal space with outside air, but in this structure, the volume of gas in the internal space is introduced by introduction of outside air into the internal space. In order to maintain the saturated humid air state in which the humidity is in the range of 90% to 100%, the high-temperature steam must be further supplied, which is not efficient.

  The present invention has been devised to solve such a problem, and the purpose thereof is to supply outside air to the interior space even when high-temperature steam having a temperature of 100 degrees or more is supplied to the interior space. Steam heating cabinet that can maintain the atmosphere of the heating space of the object to be heated uniformly in the presence of saturated humid air at a temperature of less than 100 degrees with a simple configuration without introducing expensive auxiliary equipment. It is in providing the adjustment structure of the inside steam temperature.

In order to achieve the above object, the present invention mainly discharges steam from a steam outlet into an interior space surrounded by wall surfaces, and heats an object to be heated accommodated in the interior space using the steam. A structure for adjusting the steam temperature of the internal space provided in the steam heating cabinet,
It is arranged around the steam outlet and has a surrounding member that contacts the wall surface,
The surrounding member divides the internal space into a steam space in which steam from the steam outlet flows and a heating space in which the object to be heated is disposed at a temperature lower than the steam space, It is formed of a material having heat conductivity that can exchange heat between the inside and outside of the steam space, and the steam from the steam outlet is guided to the heating space after being cooled by the heat exchange.

  In this specification and the like, “saturated humid air” means humid air containing fine water droplets within a range of 90% to 100% humidity under atmospheric pressure, in other words, a part of water vapor is Condensed air means air in a state where steam and minute water droplets are mixed, and air having a humidity within a range of 90% to 100%.

  According to the present invention, a surrounding member is provided around the steam outlet, and a steam space in which steam ejected from the steam outlet is convected is formed inside the surrounding member, and heat is generated between the inside and outside of the surrounding member. Exchange is performed. That is, the steam from the steam outlet is prevented from being directly jetted into the heating space by the surrounding member, and once flows in the steam space partitioned from the heating space, the wall and the heating space are passed through the surrounding member. Then, it is cooled and agitated in the vapor space to become a low temperature state, and then supplied to the heating space. In addition, the steam from the steam jet outlet flows in the steam space inside the enclosing member, so that the flow velocity is reduced, and the steam is supplied to the heating space in a gentle low speed state. Therefore, it is not necessary to introduce the outside air into the heating space, and the atmosphere in the heating space is uniform in a saturated humid air state with a temperature of less than 100 degrees with a simple configuration that is easy to install without using expensive auxiliary equipment. Can be maintained. Moreover, since the high-temperature steam from the steam outlet is not directly ejected into the heating space due to the presence of the surrounding member, it is possible to prevent the occurrence of steam burning of the heated object heated in the heating space. By adjusting the size of the surrounding member, it is possible to suppress the occurrence of dead space in the warehouse.

The schematic side view of the steam heating unit which concerns on this embodiment. The schematic cross-sectional front view of a steam heating warehouse. The elements on larger scale of FIG. The schematic sectional front view of a steam heating unit.

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

  FIG. 1 is a schematic side view of a steam heating unit to which a steam temperature adjusting mechanism according to the present invention is applied. Here, the said steam heating unit 10 exposes the foodstuff used as a to-be-heated material to saturated humid air of the temperature of 100 or less, and enables cooking of a foodstuff.

  In FIG. 1, the steam heating unit 10 includes a steam heating device 11 that steam-heats food, and a carriage 12 on which the food that is cooked by the steam heating device 11 is placed.

  The said steam heating apparatus 11 is an apparatus which heat-cooks the said foodstuff with saturated humid air with a temperature of 100 degrees or less, with the foodstuff still mounted in the trolley | bogie 12, and generates high temperature steam with a temperature of 100 degrees or more. The boiler 14 includes a steam heating chamber 15 that uses the high-temperature steam supplied from the boiler 14 to generate an atmosphere of saturated humid air having a temperature of 100 degrees or less to cook food.

  As shown in FIG. 2, the steam heating chamber 15 is provided in a box-shaped main body 20 in which an internal space 18 surrounded by a wall surface 17 is formed, and at a plurality of locations in the main body 20. Atmosphere adjusting means 21 for adjusting the temperature and humidity of the atmosphere.

  The main body 20 has a structure in which a heat insulating material 22 shown in a part of the main body 20 is appropriately arranged and can exhibit a certain heat insulating effect in a state where the internal space 18 is closed. Moreover, the front side of the main body 20 is formed with an open portion (not shown) that can access the internal space 18 from the outside, and the open portion is a door that is supported so that the internal space 18 can be opened and closed. 23 (see FIG. 1) is provided.

  The interior space 18 is provided in a size that can accommodate the cart 12 on which food for cooking is placed. Further, a pair of left and right guide rails 26, 26 extending in the front-rear direction, which is orthogonal to the paper surface in FIG. 2A, are provided on the bottom surface 24 of the internal space 18.

  The atmosphere adjusting means 21 includes a steam pipe 28 to which high-temperature steam from the boiler 14 (see FIG. 1) is supplied, and a surrounding member 29 arranged in a state of being covered around the steam pipe 28. The atmosphere adjusting means 21 is not limited to the state of the present embodiment illustrated in FIG. 2 with respect to the number of attachments, the attachment positions, and the individual attachment directions in one steam heating chamber 15, and various forms are adopted. Can do.

  As shown in FIG. 3, steam outlets 31 for ejecting the high-temperature steam to the outside of the pipe are provided at a plurality of locations on the surface of the steam pipe. The steam pipe 28 is supported on the wall surface 17 by a fastener 32.

  The surrounding member 29 is provided in a shape that forms inside a steam space 33 through which high-temperature steam from the steam outlet 31 flows, and in the interior space 18 outside the surrounding member 29, food to be cooked is arranged. It becomes the heating space 34 to be performed. Here, the surrounding member 29 is formed of a material such as metal having thermal conductivity that enables heat exchange between the inside and outside of the steam space 33, and after the steam from the steam jet port 31 is cooled by this heat exchange. Thus, the steam space 33 can be introduced into the heating space 34. Specifically, the surrounding member 29 is positioned closer to the wall surface 17 than the first heat transfer plate 36 inside the warehouse, which partitions the internal space 18 into a steam space 33 and a heating space 34, and the first heat transfer plate 36. And a second heat transfer plate 37.

  The first heat transfer plate 36 functions as an in-compartment heat exchanging portion arranged so that heat can be exchanged between the steam in the steam space 33 and the air (atmosphere) in the heating space 34. The first heat transfer plate 36 includes a support portion 39 on the upper end side that is fixedly supported by the wall surface 17, a top portion 40 that extends to the lower end side of the support portion 39 and extends in the direction of the inside of the cabinet, and extends downwardly to the top portion 40. It consists of the side part 41 and the outward end part 42 which continues to the side part 41 and extends in the direction of the wall surface 17. Here, the steam pipe 28 is arranged above the space surrounded by the top portion 40, the side portion 41, and the outward end portion 42, and the space below the steam pipe 28 becomes the steam space 33.

  The outward end portion 42 is provided so as to be bent at an angle of approximately 90 degrees with respect to the side portion 41, and steam from the steam space 33 is heated between the end edge and the wall surface 17. A discharge port 44 for discharging to 34 is formed.

  The second heat transfer plate 37 functions as a wall surface side heat exchange section that conducts heat of the steam space 33 to the wall surface 17. The second heat transfer plate 37 includes a fixed portion 46 that is fixed in close contact with the wall surface 17, and an inward end portion 47 that is continuous with the lower end side of the fixed portion 46 and extends in the interior direction.

  The fixed portion 46 has an upper end side that is overlapped with the support portion 39 of the first heat transfer plate 36 and is fixed to the wall surface 17, and a lower end side that is positioned below the outward end portion 42 of the first heat transfer plate 36. It is provided as follows. Here, the steam cooled in the steam space 33 and discharged from the discharge port 44 passes between the outward end portion 42, the fixed portion 46, and the inward end portion 47 and mixes with the air in the heating space 34. A mixing space 49 is formed.

  The inward end portion 47 is provided so as to bend at an angle of approximately 90 degrees with respect to the fixed portion 46, and guides the steam discharged from the discharge port 44 to the heating space 34.

  Due to the structure of the atmosphere adjusting means 21, the high-temperature steam ejected from the steam outlet 31 is supplied to the heating space 24 after the temperature is adjusted as follows.

The high-temperature steam having a temperature of 100 degrees or more ejected from the steam outlet 31 is not directly ejected into the heating space 34 due to the presence of the enclosing member 29 functioning as a baffle plate, but is first formed inside the enclosing member 29. The flow velocity is reduced while flowing in the steam space 33 while being guided to the steam space 33. At this time, heat exchange is performed between the high-temperature steam in the steam space 33 and the atmosphere in the heating space 34 via the first heat transfer plate 36, and the steam in the steam space 33 is cooled. Further, the heat by the steam in the steam space 33 passes through the first heat transfer plate 36 in which the support portion 39 contacts the wall surface 17 and the second heat transfer plate 37 in which the fixing portion 46 contacts the wall surface 17, 17, the steam in the steam space 33 is also cooled. At this time, the outward end portion 42 of the first heat transfer plate 36 facilitates the flow of the steam in the steam space 33 toward the wall surface 17, and the steam cooling effect in the steam space 33 is enhanced.
In this way, the high-temperature steam ejected from the steam ejection port 31 is stirred in a state where the flow velocity is lowered while being cooled in the steam space 33, reaches the mixing space 49 from the discharge port 44 at a substantially uniform temperature, and the mixing space 49 Thus, the air is mixed in direct contact with the air in the heating space 34. The mixed air is easily introduced into the heating space 34 by the inward end portion 47.

  As described above, the atmosphere of the heating space 34 is adjusted to an appropriate temperature by the atmosphere adjusting means 21 only by simple control of the amount of high-temperature steam ejected from the steam ejection port 31, and is gently saturated with reduced flow velocity. It will be maintained in an air state. Although not shown in the drawing, the atmosphere in the heating space 34 can be made uniform faster by providing a fan in the heating space 34 and forcibly stirring the air in the heating space 34.

  As shown in FIGS. 1 and 4, the carriage 12 is fixed to the upper surface side of the bottom plate 51 made of a heat insulating material in a substantially rectangular shape in plan view, and a plurality of upper and lower stages on which food is placed. Shelf member 52, and a caster 53 rotatably supported on the lower surface side of the bottom plate 51.

  The bottom plate 51 has a shape capable of completely closing the interior space 18 from the bottom surface 24 side when the carriage 12 is completely accommodated in the steam heating chamber 15 as shown in FIG. The heat insulation of the inner space 18 is also performed from the bottom surface 24 side.

  The casters 53 and 53 are provided so as to be movable while rotating along the guide rails 26 and 26 of the steam heating chamber 15.

  According to the cart 12 having the above configuration, it is not necessary to arrange a heat insulating material on the bottom surface 24 of the steam heating chamber 15, minimizing the thickness of the bottom surface 24, and the ground when the cart 12 is taken in and out of the steam heating chamber 15. The step on the side can be greatly reduced. As a result, the cart 12 on which the food is placed is placed in the steam heating chamber 15 as it is, and the cooking of the food can be performed immediately, and there is no need to transfer the food between the cart 12 and the steam heating cabinet 15. In addition, the work of transporting food before and after cooking is greatly improved.

  In addition, in the said embodiment, although the adjustment structure which concerns on this invention was applied to the steam heating apparatus 11 which cooks a foodstuff, this invention is not restricted to this, Other apparatuses which heat another to-be-heated object with steam It can also be applied to.

  Moreover, the shape of the surrounding member 29 is not limited to the said embodiment, A various shape is employable as long as there exists the effect | action mentioned above.

  Furthermore, the surface portion to be heat-exchanged in the surrounding member 29 is not limited to a planar shape, and heat exchange can be performed more efficiently by expanding the heat transfer area by making it uneven or corrugated.

  Further, without providing the door 23 of the steam heating chamber 15, when a plate material corresponding to the door 23 is erected on the front side of the carriage 12 and the carriage 12 is completely accommodated in the steam heating chamber 15, It is good also as a structure which obstruct | occludes the front side of the space 18 completely with the said board | plate material.

  In addition, the configuration of each part of the apparatus in the present invention is not limited to the illustrated configuration example, and various modifications are possible as long as substantially the same operation is achieved.

DESCRIPTION OF SYMBOLS 15 Steam heating chamber 17 Wall surface 18 Interior space 29 Enclosing member 31 Steam outlet 33 Steam space 34 Heating space 36 1st heat exchanger plate (inside heat exchange part)
37 Second heat transfer plate (wall side heat exchange part)
42 Outward end 44 Discharge port 47 Inward end 49 Mixing space

Claims (4)

Vapor is ejected from a steam outlet into the interior space surrounded by the wall surface, and the steam in the interior space is provided in a steam heating chamber that heats an object to be heated contained in the interior space using the steam. A structure for adjusting the temperature,
Are arranged around the steam spout in contact with the wall, the cabinet space, a vapor space vapor from the vapor jet port flows, the object to be heated at a low temperature state than the vapor space And is formed of a material having heat conductivity capable of exchanging heat between the inside and outside of the steam space, and the steam from the steam outlet is cooled into the heating space after cooling by the heat exchange. Having a surrounding enclosing member,
The surrounding member is a wall-side heat exchanging part arranged so that heat can be exchanged between the internal atmosphere in the heating space and the vapor in the vapor space, and a wall surface side that conducts heat of the vapor space to the wall surface A heat exchange section,
The inside heat exchange section has an outward end portion that faces outward with respect to the interior space in a shape that can guide the steam in the steam space toward the wall surface side heat exchange section. Structure for adjusting the steam temperature in the steam heating chamber.   2. The steam temperature adjustment in the steam heating chamber according to claim 1, wherein the surrounding member guides the steam to the heating space in a state where the flow velocity of the steam ejected from the steam ejection port is reduced. Construction. Between the outward end portion and the wall surface side heat exchanging portion, a discharge port for discharging the steam cooled by the heat exchange toward the heating space is formed,
The said wall surface side heat exchange part has an inward end part which becomes inward with respect to the said interior space in the shape which can guide | invade the vapor | steam discharged | emitted from the said discharge port to the said heating space. The structure for adjusting the steam temperature in the steam heating chamber according to claim 1 . Between the outward end and the inward end of claim 3, wherein a mixing space for mixing the in-compartment atmosphere discharged steam from the discharge port is formed Adjustment structure of steam temperature in the steam heating chamber.

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