Cabinet type oven

Abstract

The utility model aims to provide a cabinet type oven which can improve the production efficiency by reducing the temperature in a firing chamber in a short time under the condition that food with low firing temperature is fired after food with high firing temperature is produced. In the cabinet oven (1) provided with a first heat source part (4) arranged on a top wall part (32) of a firing part (3) and a second heat source part (5) arranged on a bottom wall part (33), a bottom surface opening part (37) provided with the second heat source part (5) is closed by a bottom surface part (36), and a space independent from the firing part (3) is formed. And a bottom surface opening (37) into which external air is introduced through the intake passage (71) to cool the periphery of the second heat source (5), and the external air for cooling is discharged from the firing furnace body (2) through an exhaust passage (72) communicating with the bottom surface opening (37). As a result, it is possible to efficiently cool the inside of the bottom opening (37), which is easy to gather heat.

Description

Technical Field

[0001] The utility model relates to a cabinet type oven, and more particularly to a cabinet type oven which can improve production efficiency by lowering the temperature of a baking part in a short time when baking food with a low baking temperature after producing food with a high baking temperature. Background Art

[0002] Conventionally, there are two main types of ovens for baking food: a convection oven and a cabinet oven, and each is used according to the food to be baked.

[0003] Here, the so-called convection oven is a method of sending hot air into the heating chamber. Since the hot air passes through the heating chamber, even a multi-level baking surface can be baked. In addition, the cabinet oven is an oven that directly heats the heating chamber by radiant heat from heaters installed above and below the heating chamber. It has strong firepower and can bake food in a short time.

[0004] According to the characteristics of such ovens, for example, in the baking of bread dough, a cabinet oven is mainly used (Patent Document 1). Figure 7 As shown, the cabinet oven 101 is provided with a first heat source portion 106 for heating the entire interior of the firing section 103 at a top opening portion 105 formed on a top wall portion 104 of the firing section 103, a second heat source portion 110 for heating a bottom portion 109 is provided at a bottom opening portion 108 formed on a bottom wall portion 107 of the firing section 103, and an opening and closing door portion 112 is installed at the opening portion 111 for inserting bread dough.

[0005] Prior Art Literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Publication No. 2006-296237 Utility Model Content

[0008] Issues to be solved by utility models

[0009] In addition, since there are many types of bread, there are also many types of bread dough, and it is necessary to bake bread at different baking temperatures at multiple frequencies.

[0010] For example, when baking hard breads such as French bread and pizza, which have a slightly harder texture, the baking temperature needs to be set to a relatively high temperature (about 250°C) and baked all at once. On the other hand, when baking soft breads such as Danish puff pastry and croissants, which contain a lot of butter, the baking temperature needs to be set to a relatively low temperature (about 200°C) and baked.

[0011] Therefore, for example, when baking hard bread at a high baking temperature after baking soft bread at a low baking temperature, the baking can be continued by changing the temperature setting of the baking unit to a higher setting. On the other hand, if the baking of soft bread is continued after baking hard bread, the baking unit is in a state of maintaining a high temperature, which has an adverse effect on the production of soft bread.

[0012] Therefore, after baking hard bread, in order to continue baking soft bread in the same baking section, it is necessary to wait until the temperature of the baking section reaches a certain temperature at which soft bread can be baked.

[0013] However, as described in the above-mentioned Patent Document 1, in a conventional cabinet type oven, a bottom opening is formed between the firing section and the bottom wall of the cabinet type oven, and a second heat source is disposed in the bottom opening. Furthermore, since the bottom opening is covered by the bottom surface of the firing section and becomes an independent space separated from the firing section, the heat generated by the second heat source is easily retained in the bottom opening.

[0014] Therefore, even if the power supply of the second heat source unit is cut off, the air retained in the bottom opening will be heated for a period of time due to the preheating of the second heat source unit, and the bottom temperature of the firing section will be maintained at a high state. It takes a long time until it reaches a temperature suitable for firing the next low-temperature food, resulting in low production efficiency.

[0015] The utility model is proposed in view of the above points, and its purpose is to provide a cabinet type oven, which can improve production efficiency by lowering the temperature of the baking part in a short time when baking food with a low baking temperature after generating food with a high baking temperature.

[0016] Solutions to Solve Problems

[0017] In order to achieve the above-mentioned purpose, the cabinet-type oven of the utility model comprises: a firing furnace main body, which is formed with an opening at the front and a firing part surrounded by a top wall, a bottom wall, a side wall and an inner wall; an opening and closing door portion, which closes the opening; a first heat source portion, which is arranged at a specified position of the top wall portion and is opened to form a top surface opening on the side where the firing part is located; a second heat source portion, which is arranged at a specified position of the bottom wall portion and is opened to form a bottom surface opening on the side where the firing part is located; a bottom surface portion, which closes the bottom surface opening and can carry fired objects; an air intake passage portion, one end of which is open to the side of the external air intake portion formed in the firing furnace main body, and the other end is connected to the air intake portion formed in the peripheral wall portion of the bottom surface opening; and an exhaust passage portion, one end of which is connected to the exhaust port portion formed in the peripheral wall portion of the bottom surface opening, and the other end is open to the side of the heat exhaust port portion formed in the firing furnace main body.

[0018] Here, by providing the firing furnace body with a firing section having a certain space surrounded by a ceiling wall, a bottom wall, a side wall, and an inner wall, the fired object can be fired in the firing section.

[0019] In addition, by forming an opening in front of the firing section and providing an opening and closing door that can close the opening, the fired object can be placed in the firing section through the opening, and by closing the opening and closing door during firing, the firing section can be completely surrounded and the firing temperature can be maintained constant.

[0020] In addition, by providing a first heat source portion disposed at a predetermined position of the top wall portion and having a top surface opening portion opened toward the firing portion, the fired object placed in the firing portion can be fired from above and a predetermined brown color can be applied to the surface of the fired object.

[0021] In addition, by having a second heat source portion which is arranged at a specified position on the bottom wall portion and has a bottom opening portion which opens toward the firing portion, the object to be fired placed in the firing portion can be fired from the bottom side, thereby improving the temperature and expansion conditions of the object to be fired, and by the synergistic effect with the above-mentioned first heat source portion, the overall heat storage effect of the firing portion can be improved.

[0022] In addition, by closing the bottom opening and providing a bottom portion on which the object to be baked can be placed, the bottom opening forms a space independent of the baking portion, and the temperature below the baking portion can be set relatively high relative to the temperature above the baking portion. Therefore, cooking such as imparting scorch marks to the surface of the object to be baked placed on the bottom portion can be performed only.

[0023] In addition, by providing an air intake passage portion having one end open to the external air intake port formed in the firing furnace main body portion and the other end connected to the suction port portion formed in the peripheral wall portion of the bottom opening portion, external air can be taken into the firing furnace main body portion, and the external air taken into the firing furnace main body portion is introduced into the bottom opening portion where the second heat source portion is arranged through the air intake passage portion. Therefore, external air can be efficiently introduced into the bottom opening portion that is easy to collect heat and cooled.

[0024] In addition, by providing an exhaust passage portion having one end connected to the exhaust port portion of the peripheral wall portion formed in the bottom opening portion and the other end open to the heat exhaust port portion side formed in the main body of the firing furnace, the external air that has taken away heat from the second heat source portion can be introduced into the bottom opening portion through the air intake passage portion, and discharged to the outside of the main body of the firing furnace through the exhaust passage portion. Therefore, since the external air circulates in the bottom opening portion where the second heat source portion is arranged, the temperature reduction in the bottom opening portion can be accelerated. Therefore, for example, even if soft bread with a low baking temperature is continuously baked in the same firing chamber after baking hard bread with a high baking temperature, the standby time until the temperature of the baking portion becomes a constant temperature capable of baking soft bread can be greatly reduced.

[0025] In addition, by having an intake side stop valve portion disposed at a specified position in the intake passage portion so that the size of the passage cross-sectional area of ​​the intake passage portion can be variably changed, for example, when it is desired to cool a bottom opening portion where the second heat source portion is arranged, by fully opening the intake side stop valve portion, a large amount of external air can be inhaled, thereby cooling the bottom opening portion where the second heat source portion is arranged in a short time.

[0026] On the other hand, during the baking process of the baked object, when baking soft bread with a low baking temperature and then baking hard bread with a high baking temperature, etc., when it is necessary to maintain the second heat source at a high temperature, the suction side stop valve can be fully closed to cut off the suction of external air, thereby preventing the bottom opening where the second heat source is arranged from being accidentally cooled.

[0027] In addition, by having an exhaust port stop valve portion that is arranged at a specified position in the exhaust passage portion so that the size of the passage cross-sectional area of ​​the exhaust passage portion can be variably changed, for example, when it is desired to cool the bottom opening portion where the second heat source portion is arranged, by fully opening the exhaust side stop valve portion, the external gas used for cooling the bottom opening portion can be efficiently discharged to the outside of the firing furnace main body portion through the exhaust passage portion, thereby enabling the space to be cooled in a short time.

[0028] On the other hand, when the second heat source needs to be maintained at a high temperature during the baking process of the baked object, such as when baking soft bread at a low baking temperature and then baking hard bread at a high baking temperature, the air can be retained in the bottom opening by fully closing the exhaust side stop valve, thereby preventing the bottom opening where the second heat source is arranged from being cooled accidentally.

[0029] Furthermore, by providing the air supply unit disposed at a predetermined position of the air intake passage portion, a large amount of external air can be forcibly supplied from the air intake passage portion to the bottom surface opening portion, thereby further improving the cooling efficiency of the bottom surface opening portion.

[0030] In addition, in a case where there is a detection unit for detecting the open and closed state of the suction side stop valve portion, and the detection unit includes an output component that outputs a driving signal to the air supply portion when the open state of the suction side stop valve portion is detected, the air supply portion can be driven only when it is necessary to cool the bottom surface opening portion, thereby achieving power-saving operation when driving the air supply portion.

[0031] Furthermore, when a temperature sensor is provided so as to protrude into the bottom surface opening, the temperature state in the bottom surface opening can be accurately grasped by the temperature sensor.

[0032] Furthermore, when the temperature sensor is disposed around the air inlet and on the peripheral wall of the bottom opening, the temperature sensor is not directly exposed to the outside air flowing from the air inlet into the bottom opening, and thus the temperature inside the bottom opening can be appropriately measured.

[0033] In addition, in the case of a speed control unit that controls the speed of the air supply unit based on the detected temperature based on the temperature sensor, the speed of the air supply unit is controlled based on the detected temperature based on the temperature sensor, thereby further improving the cooling efficiency of the bottom opening and achieving power-saving operation of the air supply unit.

[0034] In addition, when a rectifying plate portion is arranged in the bottom opening portion, which divides the bottom opening portion into an upper space portion where a second heat source portion is arranged and a lower space portion where external air is introduced from the intake passage portion and has a plurality of connecting hole portions, for example, external air sucked into the lower space portion can be efficiently introduced into the upper space portion where the second heat source portion is arranged through the connecting hole portions, thereby further improving the cooling efficiency of the bottom opening portion.

[0035] In addition, when the suction port portion is formed on the surrounding wall portion in a manner connected to the lower space portion, and the exhaust port portion is formed on the surrounding wall portion in a manner connected to the upper space portion, all external air sucked into the lower space portion is guided to the upper space portion where the second heat source portion is arranged through the connecting hole portion, and the external air used for cooling is discharged to the outside of the firing furnace main body portion through the exhaust port portion connected to the upper space portion, thereby further improving the cooling efficiency of the bottom opening portion.

[0036] Effect of utility model

[0037] The cabinet type oven of the utility model can improve production efficiency by lowering the temperature of the baking part in a short time when baking food with a low baking temperature after producing food with a high baking temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a perspective view of a cabinet type oven according to an embodiment of the present invention.

[0039] Figure 2 In the cabinet oven of the embodiment of the utility model, Figure 1 AA section view in.

[0040] FIG. 3 is a cross-sectional view of a cabinet-type oven according to an embodiment of the present invention, FIG. 3( a ) is a top view, and FIG. 3( b ) is a front view.

[0041] Figure 4 It is a perspective view of the cooling part of the cabinet type oven according to the embodiment of the present invention.

[0042] Figure 5 It is a cross-sectional view of a cabinet-type oven according to another embodiment of the present invention, (a) is a top view, and (b) is a front view.

[0043] Figure 6 It is a perspective view of a cooling unit of a cabinet type oven according to another embodiment of the present invention.

[0044] Figure 7 It is a figure which shows the prior art. DETAILED DESCRIPTION

[0045] Hereinafter, the embodiments of the present invention related to the cabinet type oven will be described with reference to the accompanying drawings for understanding of the present invention. In addition, in each figure, for the convenience of description, the direction from the installation surface to the upper side when the cabinet type oven 1 is installed on the installation surface is defined as the upper side, the opposite direction from the upper side is defined as the lower side, the axial direction indicated by the upper side and the lower side is defined as the vertical direction, and the axial direction perpendicular to the vertical direction is defined as the horizontal direction.

[0046] First, use Figure 1 and Figure 2 The overall structure of a cabinet type oven 1 according to an embodiment of the present invention is described. The cabinet type oven 1 is mainly composed of a firing furnace body 2 having a firing section 3 as a space for firing an object B, a first heat source 4 and a second heat source 5 for heating the firing section 3, and an opening and closing door 6 installed at an opening 31.

[0047] Here, the number of the firing parts 3 does not necessarily need to be one. For example, two or more firing parts 3 may be arranged in a vertical row in the cabinet oven 1. In addition, in the embodiment of the present invention, for the sake of convenience, the cabinet oven 1 having one firing part 3 is described.

[0048] The opening 31 of the firing unit 3 does not necessarily need to be one location. For example, the opening 31 may be provided at two locations. In this case, the opening and closing door 6 is attached to each of the openings 31 .

[0049] The firing furnace body 2 is made of a stainless steel material or the like which is excellent in corrosion resistance due to corrosion, thermal degradation, etc., and is in a substantially rectangular box shape with a firing part 3 formed inside. The firing part 3 is surrounded by a top wall 32, a bottom wall 33, a side wall 34, an inner wall 35, and an opening and closing door 6 which closes an opening 31 formed in the front. In addition, a control panel 21 for setting and changing firing conditions is provided at a predetermined position on the outer periphery of the firing furnace body 2.

[0050] Here, it is not necessarily necessary to use a stainless steel material as the material of the firing furnace main body 2. The material is not particularly limited as long as it has excellent resistance to corrosion due to corrosion, thermal degradation, etc. and can ensure a certain degree of rigidity.

[0051] The firing section 3 is formed as a space of a size sufficient to place the fired object B therein, and the fired object B is fired by being placed on a tray or the like and placed on the bottom surface section 36 together with the tray.

[0052] The bottom wall portion 33 of the firing furnace body portion 2 is formed with a bottom opening portion 37 which is open at the top and is a space for arranging the second heat source portion 5. The opening surface of the bottom opening portion 37 is covered without a gap by the bottom surface portion 36. That is, the bottom opening portion 37 is completely separated from the firing portion 3 by the bottom surface portion 36, forming a space independent of the firing portion 3.

[0053] The top wall 32 of the furnace body 2 has a top opening 38 for arranging the first heat source 4. The top opening 38 is open toward the firing part 3, and the heat of the first heat source 4 reaches the object B directly.

[0054] The first heat source portion 4 and the second heat source portion 5 are provided with an electric heater using nichrome wiring, and are configured so that the temperature of the entire electric heater is controlled by detecting the temperature using a temperature sensor (not shown).

[0055] Here, the first heat source 4 and the second heat source 5 do not necessarily have to be composed of electric heaters. For example, a gas burner or the like may be used, and these can be appropriately changed according to the object B to be fired.

[0056] The lower end of the door 6 is connected and pivotally supported to the lower edge of the opening 31, and a handle 61 is attached to the upper end thereof. The firing section 3 can be opened and closed between a closed state and an open state by holding the handle 61.

[0057] Next, using Figure 3 and Figure 4 Next, the cooling structure of the cooling unit 7 constituting the bottom surface opening 37 in which the second heat source unit 5 in the embodiment of the present invention is arranged will be described.

[0058] The cooling unit 7 in the embodiment of the present invention is composed of an air intake passage 71 for introducing external air from the outside of the firing furnace body 2 into the bottom opening 37, and an exhaust passage 72 for exhausting the air introduced into the bottom opening 37 to the outside of the firing furnace body 2.

[0059] The air intake passage portion 71 is used to introduce external air into the bottom opening portion 37 to cool the second heat source portion 5. The air intake passage portion 71 is tubular, one end of which is open to the side of the external air intake portion 22 formed on the side of the firing furnace body portion 2, and the other end is connected to the suction port portion 372 formed on the peripheral wall portion 371 of the bottom opening portion 37, cross-sectioning the bottom opening portion 37, and two air intake passage portions 71 are symmetrically provided in the width direction of the bottom opening portion 37 with the center line C dividing the bottom opening portion 37 into two as the boundary.

[0060] Here, the outside air intake port 22 does not necessarily need to be formed on the side surface of the firing furnace main body 2. It may be formed at any position of the firing furnace main body 2 as long as the outside air can be taken in.

[0061] The number of the air intake passage portions 71 does not necessarily need to be two, and may be one or three or more, and the number can be appropriately changed according to the size of the bottom surface opening 37 .

[0062] In addition, the air intake passage portion 71 does not necessarily need to cross the bottom opening portion 37 and be disposed at a symmetrical position with the center line C that roughly divides the width direction of the bottom opening portion 37 into two as a boundary. However, by cross-cutting the bottom opening portion 37 and being disposed at a symmetrical position with the center line C that divides the width direction of the bottom opening portion 37 into two as a boundary, the outside air can be uniformly introduced into the entire bottom opening portion 37, thereby improving the cooling efficiency.

[0063] The exhaust passage portion 72 is used to discharge the external gas introduced into the bottom opening portion 37 and used for cooling to the outside of the firing furnace main body portion 2. The exhaust passage portion 72 is tubular in the same manner as the air intake passage portion 71, and one end of the exhaust passage portion 72 is connected to the peripheral wall portion 371 of the bottom opening portion 37 and the exhaust port portion 373 formed at a position facing the suction port portion 372, and the other end is open to the heat exhaust port portion 23 formed on the side of the firing furnace main body portion 2, and two exhaust passage portions 72 are symmetrically provided with the center line C as the boundary.

[0064] Here, the heat exhaust port 23 does not necessarily need to be formed on the side of the furnace body 2 , but may be formed at any position of the furnace body 2 as long as the outside air can be exhausted from the bottom opening 37 to the outside of the furnace body 2 .

[0065] The number of the exhaust passage portions 72 does not necessarily need to be two. One or three or more may be provided, and the number can be appropriately changed according to the size of the bottom surface opening 37 .

[0066] In addition, the discharge port portion 373 does not necessarily need to be formed at a position facing the suction port portion 372. However, by forming the discharge port portion 373 at a position facing the suction port portion 372, the external air flowing into the bottom surface opening portion 37 can be efficiently discharged to the exhaust passage portion 72, thereby improving the cooling efficiency. Therefore, the discharge port portion 373 is preferably formed at a position facing the suction port portion 372.

[0067] The intake passage portion 71 and the exhaust passage portion 72 are provided with an intake-side stop valve portion 73 and an exhaust-side stop valve portion 74, which can operate the passage areas of the intake passage portion 71 and the exhaust passage portion 72 to the positions of the closed side and the open side, respectively. The intake-side stop valve portion 73 and the exhaust-side stop valve portion 74 are configured to be linked with the operating lever portions 75a and 75b, for example, and the operator can operate the operating lever portions 75a and 75b to any position of the closed side and the open side.

[0068] Here, it is not necessarily necessary to configure the suction side stop valve portion 73 and the discharge side stop valve portion 74. However, by configuring the suction side stop valve portion 73 and the discharge side stop valve portion 74, when it is necessary to keep the temperature of the baking section 3 at a high temperature, for example, during the process of baking the baked object B in the baking section 3, when baking soft bread with a low baking temperature and then baking hard bread with a high baking temperature, etc., the suction side stop valve portion 73 and the discharge side stop valve portion 74 are respectively operated in the closing direction, so that the outside air can be prevented from flowing into the bottom surface opening portion 37, and the second heat source portion 5 can be prevented from being accidentally cooled.

[0069] On the other hand, when it is necessary to lower the temperature of the baking section 3 in a short time after baking hard bread with a high baking temperature and then baking soft bread with a low baking temperature, by operating the suction side stop valve section 73 and the discharge side stop valve section 74 to the open side respectively, external air can be introduced into the bottom opening section 37 through the intake passage section 71 to lower the atmosphere temperature around the second heat source section 5, and the external air used for cooling can be discharged through the exhaust passage section 72.

[0070] The operation of the opening and closing sides of the suction-side stop valve 73 and the discharge-side stop valve 74 does not necessarily need to be performed by mechanical operation members based on the operation levers 75a and 75b. For example, the opening and closing operations may be performed based on electrical signals from operation buttons provided on a control panel of the furnace body 2.

[0071] In addition, the opening and closing ratios of the suction side stop valve portion 73 and the discharge side stop valve portion 74 do not necessarily need to be operated to the two positions of fully open and fully closed. For example, they can also be operated to a position such as a half-open state, and their operating positions can be appropriately changed according to the temperature conditions in the bottom surface opening portion 37, etc.

[0072] An air supply unit 76 for forcibly supplying air to the bottom opening 37 is provided at a predetermined position on the upstream side of the air intake passage 71. The air supply unit 76a is driven on and off based on a signal from a limit switch unit 77, for example. Specifically, when the limit switch unit 77 detects the operation of the above-mentioned suction-side stop valve unit 73 to the open side position, the detection signal is sent to the air supply unit 76a, and the air supply unit 76a is driven.

[0073] Here, it is not necessarily necessary to provide the air supply unit 76a. However, by providing the air supply unit 76a, a large amount of air can be forcibly introduced into the bottom surface opening 37 to be cooled. Therefore, in order to improve the cooling efficiency in the bottom surface opening 37 and reduce the temperature of the firing unit 3 to a predetermined temperature in a short time, it is preferable to provide the air supply unit 76a.

[0074] In addition, the driving of the air supply unit 76a does not necessarily need to be linked with the operation of the suction side stop valve unit 73 to the open position. For example, it is also possible to perform driving control independently of the operation of the suction side stop valve unit 73 based on an electrical signal from an operation button provided on a control panel of the firing furnace body 2. However, by forming a structure in which the air supply unit 76a is driven in linkage with the operation of the suction side stop valve unit 73 to the open position, the air supply unit 76a can be always driven while the suction side stop valve unit 73 is operated to the open position, thereby reducing the operating burden of the operator.

[0075] In addition, the air supply portion 76a does not necessarily need to be provided only in the air intake passage portion 71. For example, it may also be provided in the exhaust passage portion 72. Thus, by providing the air supply portion 76b in the exhaust passage portion 72, a large amount of external air used for cooling in the bottom surface opening portion 37 can be discharged to the outside of the firing furnace main body portion 2, thereby further improving the cooling efficiency.

[0076] A temperature sensor 78 for measuring the temperature in the bottom opening 37 is installed near the suction port 372 and at the peripheral wall 371 of the bottom opening 37, with the tip thereof protruding toward the bottom opening 37. The temperature in the bottom opening 37 measured by the temperature sensor 78 is always displayed on, for example, a control panel of the firing furnace body 2.

[0077] Here, it is not necessarily necessary to have the temperature sensor unit 78. However, since the temperature condition in the bottom opening portion 37 can be accurately grasped by the temperature sensor unit 78, and it can be used for feedback control with the air supply unit 76, the suction side stop valve unit 73 or the discharge side stop valve unit 74, for example, in conjunction with these devices, it is also preferable to have the temperature sensor unit 78.

[0078] That is, when it is desired to cool the bottom opening 37 and lower the temperature of the firing section 3 to a predetermined temperature in a short time, when the deviation between the temperature detected by the temperature sensor 78 and the predetermined temperature is large, more outside air can be introduced into the bottom opening 37 by controlling the driving speed of the air supply section 76a to the maximum speed. On the other hand, as the deviation between the temperature detected by the temperature sensor 78 and the predetermined temperature becomes smaller, the driving speed of the air supply section 76a is gradually reduced, and the driving control can be performed so that the air supply section 76a is in power-saving operation.

[0079] In addition, the temperature sensor portion 78 does not necessarily need to be arranged near the suction port portion 372. However, by being arranged near the suction port portion 372, the temperature sensor portion 78 will not be directly exposed to the external air introduced into the bottom surface opening portion 37 from the intake passage portion 71, and a more accurate temperature can be measured. Therefore, the temperature sensor portion 78 is preferably arranged near the suction port portion 372.

[0080] Next, use Figure 5 and Figure 6 Next, a cooling structure of a cooling unit 7' according to another embodiment of the present invention will be described. In addition, the same reference numerals are given to the same components as those of the cooling unit 7 according to the above embodiment.

[0081] In the cooling unit 7 ′ of another embodiment, the bottom opening 37 is provided with a rectifying plate 79 which separates an upper space 375 where the second heat source 5 is arranged and a lower space 374 where external air is introduced, and has a plurality of communicating holes 791 .

[0082] At this time, if Figure 5 (b) or Figure 6 As shown, the suction port portion 372 connected to the other end of the intake passage portion 71 is formed at a position in the peripheral wall portion 371 of the bottom opening portion 37 that is connected to the lower space portion 374, and the exhaust port portion 373 connected to one end of the exhaust passage portion 72 is formed at a position in the peripheral wall portion 371 of the bottom opening portion 37 that is connected to the upper space portion 375.

[0083] Therefore, the external air taken into the firing furnace main body 2 from the external air intake portion 22 is introduced into the lower space portion 374 of the bottom surface opening portion 37 through the air intake passage portion 71. Furthermore, the external air introduced into the lower space portion 374 is introduced into the upper space portion 375 through the communication hole portion 791 formed in the rectifying plate portion 79, and cools the second heat source portion 5. The external air used for the cooling flows out from the exhaust port portion 373 formed to communicate with the upper space portion 375 to the exhaust passage portion 72, and is discharged from the heat exhaust port portion 23 to the outside of the firing furnace main body 2.

[0084] As described above, by arranging the rectifying plate portion 79 in the bottom surface opening portion 37 , compared with the above-described embodiment, external air can be efficiently introduced to the periphery of the second heat source portion 5 , thereby further improving the cooling effect in the bottom surface opening portion 37 .

[0085] As described above, the cabinet oven to which the present invention is applied can improve production efficiency by lowering the temperature in the baking chamber in a short time when baking foods with low baking temperatures after producing foods with high baking temperatures.

[0086] Description of Reference Numerals

[0087] 1 Cabinet Oven

[0088] 2 Firing furnace body

[0089] 21. Control panel

[0090] 22 External air intake

[0091] 23 heat exhaust port

[0092] 3Firing Department

[0093] 31 Opening

[0094] 32 Top wall part

[0095] 33 bottom wall

[0096] 34 side wall

[0097] 35 inner wall part

[0098] 36 bottom face

[0099] 37 bottom opening

[0100] 371 wall

[0101] 372 Inhalation

[0102] 373 discharge port

[0103] 374 lower space

[0104] 375 Upper Space

[0105] 38 Top opening

[0106] 4First heat source

[0107] 5. Second heat source

[0108] 6 Opening and closing door

[0109] 61 handle

[0110] 7. 7' Cooling Section

[0111] 71 Inhalation passage

[0112] 72 Exhaust passage

[0113] 73 Suction side stop valve

[0114] 74 Discharge side stop valve

[0115] 75a, 75b operating lever

[0116] 76a, 76b air supply unit

[0117] 77 Limit switch unit

[0118] 78 Temperature sensor unit

[0119] 79 rectifier plate

[0120] 791 communication hole

[0121] B Burned objects

[0122] C Center Line

Claims

1. A cabinet oven, characterized in that: The cabinet type oven has: The firing furnace body has an opening formed in the front and a firing part surrounded by a top wall, a bottom wall, a side wall and an inner wall; An opening and closing door portion, closing the opening portion; A first heat source part is arranged at a predetermined position of the top wall part and is formed as a top surface opening part opening toward the side where the firing part is located; A second heat source portion is disposed at a predetermined position of the bottom wall portion and is formed as a bottom opening portion opening toward the side where the firing portion is located; A bottom portion, closing the bottom opening and capable of placing the fired object; An air intake passage portion, one end of which is open to the external air intake portion formed in the firing furnace body portion, and the other end of which is communicated with the suction port portion formed in the peripheral wall portion of the bottom opening portion; and The exhaust passage portion has one end communicating with the exhaust port portion formed in the peripheral wall portion of the bottom opening portion, and the other end opening to the heat exhaust port portion side formed in the firing furnace body portion.

2. The cabinet oven according to claim 1, characterized in that: The cabinet type oven has: a suction-side stop valve portion provided at a predetermined position of the air intake passage portion so as to variably change the size of the passage cross-sectional area of ​​the air intake passage portion; and The discharge-side shutoff valve portion is provided at a predetermined position of the exhaust passage portion, and variably changes the size of the passage cross-sectional area of ​​the exhaust passage portion.

3. The cabinet oven according to claim 2, characterized in that: The cabinet type oven includes an air supply unit disposed at a predetermined position of the air intake passage portion.

4. The cabinet oven according to claim 3, characterized in that: The cabinet type oven includes a detection unit for detecting the open / closed state of the suction side stop valve unit. The detection unit includes an output component that outputs a drive signal to the air supply unit when the output component detects an open state of the suction-side shutoff valve unit.

5. The cabinet oven according to claim 3, characterized in that: The cabinet type oven has: a temperature sensor disposed around the suction port and on a peripheral wall of the bottom opening so as to protrude into the bottom opening; as well as The rotation speed control unit controls the rotation speed of the air supply unit based on the temperature detected by the temperature sensor.

6. The cabinet oven according to claim 1, characterized in that: A rectifying plate is disposed in the bottom opening portion, the rectifying plate partitioning the bottom opening portion into an upper space portion where the second heat source portion is disposed and a lower space portion where external air is introduced from the air intake passage, and having a plurality of communication holes.

7. The cabinet oven according to claim 6, characterized in that: The suction port is formed on the peripheral wall portion so as to communicate with the lower space portion. The discharge port is formed in the peripheral wall portion so as to communicate with the upper space portion.

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