JP4347781B2 - Heating device - Google Patents

Description

  The present invention relates to a heating apparatus that continuously cooks food while moving an object to be heated in a conveyance direction.

Conventionally, for example, a plurality of ducts in which a plurality of hot-air blowing holes for blowing hot air toward an object to be heated are arranged in the heating chamber so as to be aligned in the transport direction at intervals from each other. There is known a heating device that heats and heats an object to be heated by sucking hot air blown into the heating chamber from a fan provided on the side of the heating chamber and circulating it so as to be heated by a heater and blown again from a duct. (For example, refer to Patent Document 1).
JP 58-185125 A

  However, in the above-described conventional heating device, the hot air in the heating chamber near the gap between the ducts adjacent to each other near the suction port of the fan provided on the side of the heating chamber is sucked, and is further close to that at the carry-in / out port. Even part of the outside air is sucked in, so that uneven heating tends to occur in the width direction of the heating chamber, and there is a possibility that appropriate heating cooking cannot be performed.

  This invention is made | formed in view of such a point, and it aims at providing the heating apparatus which is hard to produce a heating nonuniformity and can perform appropriate heat cooking.

Heating apparatus 請 Motomeko 1 described, a heating apparatus for continuously cooking while moving in the conveying direction in the heating chamber an object to be heated, a plurality of hot air outlet holes for blowing hot air toward the object to be heated A plurality of substantially cylindrical ducts disposed on the lower side of the heating chamber and spaced apart from each other and aligned in the transport direction, and tip portions of the upper surfaces of the plurality of ducts It is located on the part extending from the vicinity to the base end and spans all these ducts, one end abuts against the inner surface of the inlet side wall, the other end abuts against the inner surface of the outlet side wall, and between the adjacent ducts with the gap covering over the proximal end portion from the vicinity of the distal end portion of the duct, covering over the proximal end portion of the gap from the leading end portion vicinity of the duct between the duct and the inlet side wall of the upstream end position of the transport direction And the transport And one plate-shaped gap covering which covers over the base end portion of the gap from the leading end portion vicinity of the duct between the duct and the outlet side wall of the downstream end position of the direction, the combustion chamber communicating with the heating chamber Provided with a fan for pumping hot air, and the hot air blown out from the hot air blowing hole is formed between a gap between the adjacent tip portions of the duct, a leading end portion of the duct at an upstream end position in the transport direction, and It passes through the gap between the inlet side wall, the gap between the front end of the duct at the downstream end position in the conveying direction and the outlet side wall, and the gap between the front end of the duct and the front wall. Then, it flows upward, and then flows in the upper part of the gap cover and returns to the suction side of the fan.

Heating apparatus according to claim 2, wherein, in the heating apparatus according to claim 1 Symbol placement, ducts, those somewhat elongated substantially cylindrical in horizontal direction perpendicular to the conveying direction, a lower surface portion of the duct is substantially horizontal, The upper surface portion of the duct is slightly inclined with respect to the horizontal so that the front end is positioned lower, and the internal space gradually narrows from the base end side of the duct toward the front end side of the duct. is there.

According to the present invention, the gap between adjacent ducts is covered, the gap between the duct at the upstream end position in the transport direction and the inlet side wall portion is covered, and the duct at the downstream end position in the transport direction and the outlet side wall portion are covered. Since the gap covering body that covers the gap between the two is provided, heating unevenness is unlikely to occur and appropriate cooking can be performed.

  An embodiment of a heating device of the present invention will be described with reference to the drawings.

  1 to 3, reference numeral 1 denotes a heating device. The heating device 1 is, for example, a horizontal conveyance direction (FIG. 1) in a heating chamber 2 in a state where an object to be heated (food) W is placed on a tray (container) T. It is a continuous combination oven that cooks continuously while moving in the direction of the arrow in the middle.

  The heating device 1 includes a substantially box-shaped device body 10 having a substantially rectangular parallelepiped shape having a front wall portion 3, a rear wall portion 4, an inlet side wall portion 5, an outlet side wall portion 6, a top plate portion 7 and a bottom plate portion 8. Yes.

  An inlet side opening 11 is formed in the inlet side wall portion 5, and a substantially square cylindrical cylindrical inlet portion 12 projects from the periphery of the inlet side opening 11 of the inlet side wall portion 5. The opening on the front end surface of the cylindrical inlet 12 serves as the inlet 13 for the object to be heated W before cooking. The upper side of the cylindrical inlet portion 12 receives the surplus steam that flows out from the inlet 13 that is the opening of the front end surface of the cylindrical inlet portion 12 during steam cooking, etc. An exhaust hood 16 with a chimney on the inlet side for exhausting the air is disposed.

  Further, an outlet side opening 21 is formed in the outlet side wall portion 6, and a substantially square cylindrical cylindrical outlet portion 22 projects from the periphery of the outlet side opening 21 of the outlet side wall portion 6. The opening on the front end surface of the cylindrical outlet portion 22 is an outlet 23 for the article to be heated W after cooking. The upper side of the cylindrical outlet part 22 receives the surplus steam that flows out from the outlet 23 that is the opening of the front end surface of the cylindrical outlet part 22 during steaming cooking and the like, and moves upward from the exhaust chimney part 25 An exhaust hood 26 with a chimney on the outlet side for exhausting the exhaust gas is disposed.

  The heating device 1 also includes hot air supply means 31 for supplying hot air to the heating chamber 2 in the apparatus body 10 and steam supply means 32 for supplying steam to the heating chamber 2 in the apparatus body 10.

  The hot air supply means 31 includes a gas burner 34 that is a heat source for generating hot air, and two upper and lower fans 35 that are pressure feeding means for pumping hot air. The gas burner 34 and the fan 35 are disposed in the combustion chamber 36.

  Further, the hot air supply means 31 is disposed on the upper side of the heating chamber 2 and is provided with a plurality of (for example, five) ducts 41 arranged at equal intervals and aligned in the horizontal conveying direction, and on the lower side of the heating chamber 2. A plurality of (for example, five) ducts 42 that are disposed and are arranged at equal intervals in a horizontal conveying direction so as to face the upper duct 41, and each duct 41, receiving hot air from the combustion chamber 36, And a hollow duct mounting portion 43 which is distributed and supplied to 42 substantially uniformly. The ducts 41 and 42 are detachably attached to the duct attachment portion 43.

  As shown in FIGS. 4 and 5, the duct 41 disposed on the upper side of the heating chamber 2 has a substantially cylindrical shape that is slightly elongated in the horizontal direction (the width direction of the transfer conveyor 61) that intersects the transfer direction, for example, perpendicularly. On the lower surface of the duct 41, a plurality of hot air blowing holes 45 for blowing hot air toward the object to be heated W are arranged at equal intervals along the longitudinal direction of the duct 41. Is formed. The lower surface of the duct 41 is substantially horizontal so that the hot air blown out uniformly hits in the width direction of the conveyor 61, but the upper surface of the duct 41 prevents the flow of hot air supplied into the duct 41 from going straight to the tip. The inner space is gradually narrowed from the proximal end side (duct mounting portion side) of the duct 41 toward the distal end side of the duct 41 so that the distal end is positioned downward.

  Further, in each duct 41, a plurality of rectifying plates 46 are spaced apart from each other so that the amount of hot air blown from the respective hot air blowing holes 45 arranged in the horizontal direction orthogonal to the conveying direction is substantially uniform. Arranged. Each rectifying plate 46 is attached substantially vertically at a plurality of locations on the lower surface of the duct 41. As is clear from FIG. 5, for example, the position of each rectifying plate 46 is positioned substantially at the center of the duct 41, approximately at the center of the proximal half of the duct 41, And approximately one-eighth of the proximal end side of the duct 41.

  And, on the portion of the upper surface of the duct 41 arranged on the upper side of the heating chamber 2 from the vicinity of the front end to the base end, it is located across all the ducts 41 and there is a gap between the adjacent ducts 41. Covering the upper part and covering the upper part of the gap between the duct 41 at the upstream end position in the transport direction and the inlet side wall part 5 and the gap between the duct 41 at the downstream end position in the transport direction and the outlet side wall part 6 A single plate-like gap cover 47 that covers the upper part is provided. The gap cover body 47 is constituted by, for example, a substantially rectangular plate-like reflux plate 48 having a longitudinal direction in the transport direction, and one longitudinal end portion of the reflux plate 48 abuts on the inner surface of the inlet side wall portion 5. The other longitudinal end of the reflux plate 48 is in contact with the inner surface of the outlet side wall 6.

  On the other hand, the duct 42 disposed on the lower side of the heating chamber 2 has a structure in which the upper duct 41 is disposed upside down and has the same action, and intersects the transport direction, for example, a horizontal direction (for example, orthogonal) A plurality of hot air blowing holes that form a two-row shape in which the hot air is blown out toward the upper object W to be heated on the upper surface of the duct 42. (Not shown) are formed at equal intervals along the longitudinal direction of the duct 42. The upper surface of the duct 42 is substantially horizontal, but the lower surface of the duct 42 is slightly inclined with respect to the horizontal so that the tip is positioned upward, and the duct 42 extends from the base end side (duct mounting side). The inner space gradually narrows toward the tip of 42.

  In each duct 42, a plurality of rectifying plates 51 are spaced from each other so that the amount of hot air blown from the hot air blowing holes arranged in the horizontal direction orthogonal to the conveying direction is substantially uniform. It is arranged. Each rectifying plate 51 is attached substantially vertically to a plurality of locations on the upper surface of the duct 42. As is apparent from FIG. 5, the mounting positions of the respective rectifying plates 51 are the same as the upper rectifying plate 46, for example, the substantially central position of the entire duct 42, the substantially central position of the proximal half of the duct 42, the duct The center position of a quarter of the base end side of 42 and the position of the center of one eighth of the base end side of the duct 42 are shown.

  The heating chamber 2 and the combustion chamber 36 communicate with each other in the vicinity of the upper and lower portions of the duct mounting portion 43, and the hot air is operated in the combustion chamber 36, the duct mounting portion 43, the ducts 41 and 42, and the The heating chamber 2 is circulated. The flow of the hot air is shown in FIGS. The leading ends of the ducts 41 and 42 are located in the vicinity of the front wall 3 of the apparatus main body 10.

  Further, the steam supply means 32 has a steam jet pipe 53 disposed on the lower side of the heating chamber 2 and a steam supply pipe 54 connected to the steam jet pipe 53.

  On the other hand, the heating device 1 includes a transport conveyor 61 which is transport means for moving the object to be heated W on the tray T in the transport direction so as to cross the apparatus main body 10.

  The transport conveyor 61 has a rotatable transport endless body 62 having a forward path surface portion 63 that moves between the upper duct 41 and the lower duct 42. The transport endless body 62 is stretched over a plurality of rotating bodies 66, the forward path surface portion 63 is disposed in the apparatus main body 10, the cylindrical inlet section 12 and the cylindrical outlet section 22, and the return path surface section 64 is disposed in the apparatus main body. 10 is disposed below. Further, the conveying endless body 62 can be rotated in a predetermined direction by power from the drive motor 67.

  Next, the operation and the like of the one embodiment will be described.

  For example, when the object to be heated W is cooked in an open state using steam using the heating device 1, the steam is supplied to the heating chamber 2 from the steam ejection hole of the steam ejection pipe 53 and is filled. The object to be heated W on the conveyor 61 is cooked by the heat of steam.

  During cooking using this steam, a part of the steam, that is, surplus steam, flows out from the inlet 13 of the cylindrical inlet 12 and passes through the inlet-side chimney exhaust hood 16, and the inlet-side chimney exhaust hood 16 The exhaust chimney 15 is discharged as exhaust from the upper surface opening of the chimney 15 and flows out from the outlet 23 of the cylindrical outlet 22 and passes through the exhaust hood 26 with the chimney on the outlet side, and the exhaust chimney of the exhaust hood 26 with the chimney on the outlet side Exhaust from the top 25 opening as exhaust.

  For example, when cooking the heated object W in an open state using hot air, the hot air circulates in the combustion chamber 36, the duct mounting portion 43, the ducts 41 and 42, and the heating chamber 2 by the operation of the fan 35. The heated object W on the conveyor 61 is cooked by the heat of the circulating hot air.

  At this time, most of the hot air blown out from the hot air blowing holes 45 of the ducts 41 and 42 is, as shown in FIGS. 2 and 3, the gap between the tips of the adjacent ducts 41 and the upstream end position in the transport direction. The gap between the front end portion of the duct 41 and the inlet side wall portion 5, the gap between the front end portion of the duct 41 and the outlet side wall portion 6 at the downstream end position in the transport direction, and the front end portion and the front wall portion of the duct 41 3, flows upward through the gap between them, and then flows through the upper part of the reflux plate 48 and returns to the suction side of the fan 35. That is, by covering the upper part of the duct 41 with the reflux plate 48 and eliminating the gap between the duct 41 and the duct 41, the gap between the duct 41 and the duct 41 near the base end side of the duct 41 close to the suction port of the fan 35 is removed. Only the hot air around it is not sucked. Further, the portion becomes negative pressure, and even the outside air near the base end side of the duct 41 is not sucked in the width direction of the entrances 13 and 23.

  As described above, according to the heating device 1, the hot air that has exited from the ducts 41 and 42 disposed in the heating chamber 2 flows upward from the vicinity of the end of the duct 41, and at the entrances 13 and 23, the duct 41. Since the outside air that has cooled from the portion close to the base end side does not enter the heating chamber 2, the temperature in the width direction of the transport conveyor 61 becomes substantially constant, and heating unevenness is unlikely to occur in the article W to be heated. Cooking is possible.

  In addition, since a plurality of rectifying plates 46 and 51 are disposed in the ducts 41 and 42, the flow of hot air supplied in the ducts 41 and 42 is not made to go straight to the tip without resistance, The amount of hot air blown out from each hot air blowing hole 45 can be made substantially uniform by keeping a part of the ducts 41 and 42 at the base end side, so that the heating unevenness in the width direction of the conveyor 61 is reduced. It can be prevented more effectively.

  In the above-described embodiment, the configuration in which the gap cover 47 is provided only on the upper surface of the duct 41 disposed on the upper side of the heating chamber 2 has been described. For example, the gap cover 47 is provided on the upper side of the heating chamber 2. The structure provided in both the upper surface part of the arrange | positioned duct 41 and the lower surface part of the duct 42 arrange | positioned under the heating chamber 2 may be sufficient.

  Further, the gap cover 47 is not limited to the one constituted by the single reflux plate 48, and may be constituted by a plurality of divided reflux plates, for example, each between the ducts 41 adjacent to each other. A plurality of intermediate plate members covering the gap, an inlet side plate member covering the gap between the duct 41 at the upstream end position in the transport direction and the inlet side wall portion 5, a duct 41 and the outlet side wall portion 6 at the downstream end position in the transport direction What was comprised with the exit side board member which covers the gap | interval between these may be used.

  The heating device 1 may be a continuous oven without the steam supply means 32, a continuous oven with another heating means, or the like.

It is front view sectional drawing of one Embodiment of the heating apparatus of this invention. It is a top view sectional view of a heating device same as the above. It is side view sectional drawing of a heating apparatus same as the above. It is a perspective view of the upper side duct part of a heating apparatus same as the above. It is a side view of the duct of a heating apparatus same as the above.

DESCRIPTION OF SYMBOLS 1 Heating device 2 Heating chamber 3 Front wall part 5 Inlet side wall part 6 Outlet side wall part
35 fans
36 Combustion chamber
41 Duct
45 Hot air blowing holes
47 Gap cover W W

Claims (2)

A heating device that continuously cooks food while moving an object to be heated in a conveying direction in a heating chamber,
A plurality of hot air blowing holes for blowing hot air toward the object to be heated are provided on the lower surface portion, arranged on the upper side of the heating chamber, and arranged in the transport direction at intervals from each other . Multiple ducts,
Positioned across all of the ducts on the portion extending from the vicinity of the front end to the base end of the upper surfaces of the plurality of ducts, one end abutting against the inner surface of the inlet side wall, and the other end being the inner surface of the outlet side wall contact, together with the covering over the proximal end portion from the vicinity of the distal end portion of the duct the gap between the duct adjacent to each other, the duct a gap between the duct and the inlet side wall of the upstream end position of the transport direction from the distal end portion near the cover over the base end portion, and wherein in the conveying direction of the downstream end position the duct and the outlet side wall and the gap from the distal end portion near one plate-like covering over the proximal end of the duct between the A gap cover,
A fan that is disposed in a combustion chamber that communicates with the heating chamber and that pumps hot air;
The hot air blown out from the hole for hot air blowing out is a gap between the adjacent ends of the ducts, a gap between the leading end of the duct at the upstream end position in the conveying direction and the inlet side wall, and a conveying direction. It flows upward through the gap between the front end of the duct at the downstream end position and the outlet side wall, and the gap between the front end of the duct and the front wall, and then the gap cover A heating device that flows in an upper part and returns to the suction side of the fan. The duct has a substantially cylindrical shape that is slightly elongated in the horizontal direction perpendicular to the conveying direction.
The lower surface portion of the duct is substantially horizontal, and the upper surface portion of the duct is slightly inclined with respect to the horizontal so as to be positioned at the lower end, from the proximal end side of the duct toward the distal end side of the duct. claim 1 Symbol placement of the heating device, characterized in that the internal space is gradually narrowed.

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