JP7145459B2 - Hot air dryer and its method - Google Patents

Description

The present invention relates to hot air dryers. The details are mainly hot air dryers for food and methods thereof for drying crops such as shiitake mushrooms and other agricultural products, or foods (processed products) such as seafood and other processed products (processed products). is.

In a normal hot-air dryer, the opening and closing door (the opening and closing door governing the opening and closing of the other room described in this embodiment) is not frequently opened and closed during operation, that is, during drying. However, with dried foods, it is sometimes necessary to take out shrimps (trays) during drying and stir the dried foods in the shrimps. The sticking causes deterioration of shape and taste, deterioration of quality, etc. As a result, for example, it becomes a factor of price reduction. Therefore, this kind of gesture is essential.

In such a situation, opening the opening/closing door of the hot air dryer causes the temperature of the hot air to drop, and in order to recover from the temperature drop, ignition and combustion are repeated. The heat exchange cylinder (heat generating furnace)/burner heats up and fuel loss occurs. can be destroyed by

In addition, in order to avoid the occurrence of the above-mentioned problems, for example, it is necessary to open the door after turning off the burner and/or lowering the temperature of the heat exchange cylinder (hot air generation part). . However, if such actions are performed, the dry matter (to-be-processed matter) cools, and the cooling of the dry matter causes quality deterioration and efficiency deterioration.

Based on the above current situation, the prior art will be examined. In the hot-air dryer, no invention was found that controls the opening and closing of the opening/closing door and the flow of hot air, air, and the like. Regarding general intake and exhaust of hot air, there is a document described in Japanese Patent Application Laid-Open No. 2006-337003 (referred to as document (1)). This document (1) is a "dryer and drying control method", which has a structure capable of installing a large number of drying chamber units, and air intake/exhaust control is performed by upper and lower passages and dampers provided in the passages. Structures and methods of control are disclosed. Regarding the flow of hot air and cooling hot air, there is the following explanation based on paragraph 0041 and FIGS. That is, in the initial stage of drying shown in FIG. 7, the entire amount is discharged from the exhaust port (34) of each drying chamber unit (12) to the outside of the machine, and in the middle stage of drying shown in FIG. Through the circulation port (35), 1/2 of the total amount is circulated between the hot air generator (11).The whole is circulated in the latter stage of drying shown in Fig. 9. However, such hot air flow and control are general, and are not the structure intended by the present invention, which will be described later, and the hot air control mechanism.

In addition, without limiting the field, when mentioning the prior art in the general field, there is a document described in Japanese Patent Application Laid-Open No. 2012-211711 (referred to as document (2)). According to paragraph 0024, the exhaust device of the draft chamber, "the exhaust device provided in the draft chamber (1) comprises an opening/closing interlocking mechanism (40) provided between an opening/closing damper (23) and a front door (16). The opening/closing interlocking mechanism (40) interlocks the opening/closing operation of the opening/closing damper (23) with the opening/closing operation of the front door (16). The opening degree of the exhaust duct (20) due to irrespective of the above, the air velocity generated by the exhaust in the processing chamber (5) can be kept constant." However, the opening/closing interlocking mechanism (40) is limited to interlocking the operation of the opening/closing damper (23) and the exhaust duct (20). And it is not a hot air control mechanism.

JP-A-2006-337003 Japanese Unexamined Patent Application Publication No. 2012-211711

In view of the above, the present invention proposes a device and an air blowing method capable of repeatedly opening and closing the opening/closing door without stopping the hot air dryer. That is, (a) during drying, hot air is sent to the other room (drying room), and at the moment the opening and closing door is opened, only in one room (machine room = heat generating furnace, that is, burner, heat exchange cylinder, etc.) ( Bypass passage) It is a mechanism to circulate. (b) Advantages are 1. No machine damage due to rapid cooling, ON/OFF switching, etc. 2. Since cold air does not enter the object to be processed, the temperature of the object to be processed can be maintained. 3. From the moment the opening/closing door is closed, the required hot air can be obtained. 4. Drying time can be shortened. 5. Drying can be done without worrying about opening and closing the door. (c) The point of structure (mechanism) is 6. By providing a bypass passage, for example, at the moment the opening/closing door is opened, the air blowing (control) method can form the bypass passage by closing the second door. It is a structure that enables ON/OFF control in one room when the opening/closing door is opened.

The present invention discloses the inventions of claims 1 to 8 in order to achieve the above-mentioned (a) to (c) and exhibit unprecedented features.

In the invention of claim 1, the housing includes one room with a damper-equipped suction pipe in one corner of the ceiling, and the other room that is separated from the one room and has a damper-equipped exhaust pipe in a different corner of the ceiling. become,
Equipped with an inner wall that separates one room and the other room,
First and second connecting passages are formed above and below the inner wall,
The first connecting passage is an opening,
The second connecting passage is provided with a first door that opens and closes the second connecting passage,
On the other hand, a bypass passage with upper and lower openings is formed in the room,
Provide a second door that opens and closes the opening under the bypass passage,
A link mechanism is provided between the second door and the first door, and the second door and the first door are arranged in an L shape in plan view,
On the other hand, the hot air generating part of the room is equipped with a burner with a fan, a heat exchange cylinder, and a fan that controls the flow of air and hot air.
Via the suction cylinder and the opening above the bypass passage,
The sucked air reaches the hot air generator from the suction cylinder, is converted into hot air by the hot air generator, passes through the opening under the bypass passage, and reaches the other room. The opening of the hot air generator opens at the top, and the opening below the bypass passage opens at the bottom of the hot air generator,
In the other room, set the Ebira containing the object to be processed,
It is a hot air dryer configured to

As a result, in claim 1, (a) during drying, hot air is sent to the other room, and at the moment the open/close door is opened, it becomes a mechanism that circulates only in the one room. By providing a bypass passage, for example, at the moment the opening/closing door is opened, it is a blower mechanism that can form a bypass passage by closing the second door. When the door is opened, ON/OFF control can be performed in one room. The effects are (b)1. No machine damage due to rapid cooling, ON/OFF switching, etc. 2. Since cold air does not enter the object to be processed, the temperature of the object to be processed can be maintained. 3. From the moment the opening/closing door is closed, the required hot air can be obtained. 4. Drying time can be shortened. 5. Drying can be done without worrying about opening and closing the door. That is.

In the second aspect of the invention, the sucked air introduced from the suction pipe into the hot-air generating section is converted into hot air by the hot-air generating section, passes through the second connecting passage, reaches the other room, and finishes working in the other room. It is a hot-air dryer in which the air whose temperature has been lowered by heating can be exhausted from the exhaust pipe of the other room to the outside of the housing.

As a result, in claim 2, it is possible to secure the same features as the mechanism and structure as in claim 1, or to expect the effects resulting therefrom.

In the invention of claim 3, the bypass passage is provided in the vertical direction on one side of one room so as to be attached to the heat exchange cylinder, the upper and lower openings are opened, and the lower opening can be opened and closed by the second door. It is a hot air dryer with a configuration.

Thus, in claim 3, it is possible to propose a bypass passage structure that can achieve the mechanisms and effects of claims 1 and 2.

In the invention of claim 4, the second door is a hot air dryer configured to close the bypass passage via a link mechanism when the first door is opened.

Thus, in claim 4, it is possible to propose a structure of the first and second doors that can achieve the mechanisms and effects of claims 1 and 2, and a link mechanism that connects the two.

In the fifth aspect of the invention, the link mechanism includes a first rod penetrating through a bracket provided on a column of the housing, a first link provided on the first rod, one end fixed to the first link, and the other A second rod fixed to the second door, a second link pivotally supported on the second rod, a third rod provided on the second link, and a third link provided on the third rod. and a fourth rod fixed to the side surface of the first door.

Thus, in claim 5, it is possible to propose a structure of a link mechanism capable of achieving the mechanisms and effects of claims 1 and 2.

In the sixth aspect of the invention, the housing is a hot air dryer made entirely of stainless steel.

Thus, in claim 6, it is possible to propose a specified material that can achieve the mechanisms and effects of claims 1 and 2.

In the invention of claim 7, the housing includes one room having a damper-equipped suction pipe in one corner of the ceiling, and the other room partitioned from the one room and having a damper-equipped exhaust pipe in a different corner of the ceiling. become,
Equipped with an inner wall that separates one room and the other room,
First and second connecting passages are formed above and below the inner wall,
The first connecting passage is an opening,
The second connecting passage is provided with a first door that opens and closes the second connecting passage,
On the other hand, a bypass passage with upper and lower openings is formed in the room,
Provide a second door that opens and closes the opening under the bypass passage,
A link mechanism is provided between the second door and the first door, and the second door and the first door are arranged in an L shape in plan view,
On the other hand, the hot air generating part of the room is equipped with a burner with a fan, a heat exchange tube, and a fan that controls the flow of air and hot air.
Via the suction cylinder and the opening above the bypass passage,
The sucked air reaches the hot air generator from the suction cylinder, is converted into hot air by the hot air generator, passes through the opening under the bypass passage, and reaches the other room. The opening of the hot air generator opens at the top, and the opening below the bypass passage opens at the bottom of the hot air generator,
In the other room, set the shrimp containing the object to be processed,
In the hot air dryer configured to
Air introduced into one room through the first and second connecting passages formed above and below the inner walls that separate the one room and the other room is converted into hot air in the one room, and then transferred to the other room through the second connecting passage. A step of drying the material to be dried stored in the other room with the hot air introduced into the second room, and exhausting the hot air whose temperature has been lowered by the drying process to the outside from the exhaust port,
When the other room is opened by the opening and closing door provided in the housing, the second connecting passage is closed by the first door, and at the same time, the bypass passage of the one room is used, and the hot air of the other room is circulated in the bypass passage. B step to avoid temperature drop of hot air and/or burner in one room and/or heat exchanger,
It is a hot air dryer configured to be characterized by comprising

As a result, in claim 7, (a) during drying, hot air is sent to the other room, and at the moment the open/close door is opened, it becomes a mechanism that circulates only in one room. By providing a bypass passage, for example, at the moment the opening/closing door is opened, the second door is closed to form a bypass passage. When the door is opened, ON/OFF control can be performed in one room. The effects are (b)1. No machine damage due to rapid cooling, ON/OFF switching, etc. 2. Since cold air does not enter the object to be processed, the temperature of the object to be processed can be maintained. 3. From the moment the opening/closing door is closed, the required hot air can be obtained. 4. Drying time can be shortened. 5. Drying can be done without worrying about opening and closing the door. That is.

In the eighth aspect of the invention, the hot air circulates through the bypass passage except for the temperature drop in the drying process in the other room, thereby ensuring a constant heat.

Thus, in claim 8, it is possible to propose an air blowing method for circulating through the bypass passage that can achieve the mechanism and effect of claim 7.

FIG. 2 is a bird's-eye view front perspective view showing the entirety of the present invention. In FIG. 1, the opening and closing door is released, the inside is seen through, and the front perspective view showing the other room In FIG. 1, an overhead front perspective view showing the whole interior with the opening and closing door opened In FIG. 1, a bird's-eye view front perspective view showing the interior on the other hand and showing the room 4. An overhead front perspective view that extracts the one room shown in FIG. 4 and shows the inside of it. A bird's-eye front perspective view showing the interior of the one room shown in FIG. A bird's-eye view front perspective view showing the main part of the interior by cutting in the vertical direction to explain the flow of the intake air, hot air, and cooled air from one room to the other room. On the other hand, an overhead front perspective view for explaining the process of B, which is cut in the vertical direction to explain the hot air flowing through the room and the bypass passage, and which shows the main part of the interior. In FIG. 8, the bottom part of the housing is enlarged, and a bird's-eye front perspective view showing the parts provided at the bottom part, the first and second doors, and the link mechanism FIG. 10 is a partially cut-away bird's-eye view front perspective view showing the first and second doors and the link mechanism shown in FIG. FIG. 10 is an overhead front perspective view of a state in which the first and second doors and the link mechanism shown in FIG. 9 are operated, the second connection passage is opened , and the bypass passage is opened . FIG. 10 is an overhead front perspective view of a state in which the second connecting passage is closed and the bypass passage is opened by the first and second doors shown in FIG. 9 ;

Reference numeral 1 denotes a housing made of stainless steel, provided with an opening/closing door 2 for opening the other room, which will be described later. The housing 1 is divided into one room 100 and the other room 101 by the first inner wall 3 , and the upper and lower sides of the inner wall 3 are opened to form a first connecting passage 300 and a second connecting passage 301 . Both the first connecting passage 300 and the second connecting passage 301 are connected to the one room 100 and the other room 101 . That is, the second connection passage 301 serves as a passage for hot air A (high temperature air), and the first connection passage 300 serves as a passage for cooled air B. As shown in FIG. In the figure, C indicates intake air.

A bypass passage 5 is formed in the one room 100. In this example, a box-shaped bypass passage 5 is provided on one side of the one room 100 so as to be attached to a later-described heat exchange tube provided in the one room 100. The case 500 and the bypass passage 5 are desirably arranged side by side in the same direction 1a as the opening/closing door 2 provided in the housing 1 and provided in the interior 100a of the room 100 on the other hand. Openings 5 a and 5 b are provided above and below the bypass passage 5 . The upper opening 5 a is normally open, and the lower opening 5 b is opened and closed by a second door 6 .

On the other hand, the room 100 is equipped with a device for converting sucked air C (taken air) into hot air B, or sucking and conveying it. A suction tube 7, a heat exchange tube 8, a burner 9 with a fan, and a fan 10 provided in the suction tube 7 are provided. Therefore, the suction air C from the suction opening (suction port) 100b is guided to the suction tube 7→the heat exchange tube 8→the second connection passage 301, and is converted into hot air A by contact with the heat exchange tube 8. The heat exchange cylinder 8 is heated by the burner 9 and converts the intake air C into hot air A. As shown in FIG. Further, the space (peripheral gap) on the lower side of the heat exchange tube 8 and the second connection passage 301 are connected. The suction tube 7 is connected indirectly to the suction tube 11 provided at the suction port 100b opening in the ceiling of the room 100, and guides the suction air C to the suction tube 7 as described above. Reference numeral 12 in the drawing denotes a damper provided in the suction cylinder 11 .

Next, the other room 101 is provided with an opening 101a through which objects to be processed such as shrimps or a loading platform can be taken in and out. 101b is opened and closed. A wall surface 3a of the inner wall 3 facing the side wall surface 101c of the interior 101 is provided with a large number of shelves 22 and 23 for supporting shrimp. Shrimps are inserted between the shelves 22 and 23 and supported. The shelves 22 and 23 are detachably arranged on the wall surfaces 101c and 3a in units of a plurality of shelves. It is therefore useful for cleaning, damage and the like. An opening 101d is provided in the ceiling of the other room 101, and an exhaust pipe 101e and a damper 101f are arranged in the opening 101d. Therefore, the cooled air B is exhausted to the outside while the damper 101f is opened.

Also, the second connecting passage 301 of the inner wall 3 and the bypass passage 5 are opened and closed by the first door 30 and the second door 6 . This opening and closing is performed by, for example, the following link mechanism structure. A bracket 33 fixed to the inner wall 3 or the pillar 32, a first rod 34 having a branch rod 34a penetrating the bracket 33 and directed toward the interior 101b of the room 101, and the first rod 34 A first link 35 that supports (pivots), a second rod 36 that supports one end of the first link 35 and supports the second door 6, and a second link 37 that supports the second rod 36. , a third rod 39 that connects the second link 37 and the third link 38 , and a fourth rod 40 that connects the third link 38 to the second door 6 .

D in the figure is a chimney for exhausting combustion gas.

To explain the movement of the link mechanism, from the state shown in FIG. When the opening/closing door 2 is closed, the first rod 34 is pressed in the direction A by the opening/closing door 2, and the branch rod 34a, the first link 35, and the second link 37 rotate in the arrow B direction. By rotating the first link 35 and the second link 37 in the B direction, the second door 6 rotates in the arrow B direction, and the bypass passage 5 changes from the closed state in FIG. 12 to the open state in FIG. becomes. The rotation of the second link 37 pushes down the third rod 39 in the C direction. This depression causes the third link 38 to rotate counterclockwise in two directions. The counterclockwise rotation of the third link 38 also causes the fourth rod 40 supported by the third link 38 to rotate counterclockwise in two directions. Due to this rotation, the first door 30 supported by the fourth rod 40 also rotates counterclockwise in two directions. By rotating the first door 30, the second connecting passage 301 is opened as shown in FIG.

Next, the flow of air will be described with reference to FIGS. 7 and 8. FIG. FIG. 7 explains the step (a), and explains the flows of the intake air C, the hot air A, and the air B whose temperature has been lowered. At least, the damper 12 of one room 100 is opened, and the suction air C (outside air) sucked from the suction cylinder 11 uses the suction force of the fan 10 to reach the heat exchange cylinder 8 (combustion cylinder) and heat exchange. is converted into hot air A by This hot air A passes through the second connecting passage 301 from the lower space of one room 100, rises from the lower side of the other room 101, becomes cooled air B, and becomes the first connecting passage 300 above the other room 101. Then, it reaches the heat exchange tube 8 again. This is the drying step of the object to be processed. In this drying step, the second connecting passage 301 is opened and the bypass passage 5 is closed by the second door 6 (the state shown in FIG. 11). Although the damper 101f of the other room 101 is open, it is not limited.

FIG. 8 explains the flow (circulation) of the hot air A. FIG. At least the dampers 12 and 101g are closed, the suction port 100b of the one room 100 and the opening 101e of the other room 101 are closed, and the housing 1 is sealed. Further, the second door 6 of the bypass passage 5 is opened, and the second connecting passage 301 of the inner wall 3 is closed by the first door 30 (the state shown in FIG. 12). At the same time, the upper and lower openings 5 a and 5 b are opened so that the hot air A can circulate through the bypass passage 5 . Therefore, the hot air A circulates through the intake tube 7 of the room 100, the heat exchange tube 8, the lower opening 5b, and the upper opening 5a. That is, the occurrence of heat energy loss can be avoided. Incidentally, the suction force of the fan 10 is maintained.

The bypass (circulation) flow of the hot air A in one room 100 (machine room) between the bypass passage 5 and the heat exchange tube 8 shown in FIG. For example, during the drying of the object to be processed, the hot air A is sent to the other room 101, and when the opening/closing door 2 is opened (preferably momentarily), the hot air A is sent only in the machine room. It is a mechanism that circulates.

It has the following advantages:

1. There is no damage to machinery in the machine room due to rapid cooling and/or ON/OFF switching (eg ON/OFF of burners 9, etc.). 2. It is possible to prevent the temperature of the hot air A from dropping and to achieve energy saving. 3. Necessary hot air A can be obtained from the moment the opening/closing door 2 is closed, and rapid drying can be performed. 4. You can save time and ensure quality. 5. Drying can be performed without worrying about opening and closing the opening/closing door 2.例文帳に追加6. Switching to the bypass passage 5 (drying and drying stop) is automatically switched by the opening/closing operation of the opening/closing door 2. - 特許庁7. In addition, the degree of airtightness between the one room 100 and the other room 101 can be ensured by the dampers 12 and 101f.

Each embodiment described above is a description of a preferred example of the present invention, and is not limited to each embodiment or the drawings. Therefore, structures that partially change the configuration within the spirit of the invention, structures that achieve the same features and effects, and the like are within the scope of the present invention.

1 housing 1a direction 100 one room 100a inside 100b opening (inlet)
101 Other room 101a Opening 101b Inside 101c Wall surface 101d Opening 101e Exhaust tube 101f Damper 2 Open/close door 3 Inner wall 3a Wall surface 300 First connecting passage 301 Second connecting passage 5 Bypass passage 5a Upper opening 5b Lower opening 500 Case 6 Second door 7 suction tube 8 heat exchange tube 9 burner 10 fan 11 suction tube 12 damper 22 shelf 23 shelf 30 first door 32 pillar 33 bracket 34 first rod 34a branch rod 35 first link 36 second rod 37 second link 38 third Link 39 Third rod 40 Fourth rod A Hot air B Cooled air C Intake air D Chimney

Claims (8)

The housing consists of one room with a damper-equipped suction pipe in one corner of the ceiling, and the other room separated from this one room and equipped with a damper-equipped exhaust pipe in a different corner of the ceiling,
An inner wall that separates the one room and the other room,
First and second connecting passages are formed above and below this inner wall,
This first connecting passage is an opening,
The second connecting passage is provided with a first door for opening and closing the second connecting passage,
A bypass passage having upper and lower openings is formed in the one room,
A second door is provided for opening and closing the lower opening of the bypass passage,
A link mechanism is provided between the second door and the first door, and the second door and the first door are arranged in an L shape in plan view,
The hot air generating part of the one room is provided with a burner with a fan, a heat exchange cylinder, and a fan that controls the flow of air and hot air,
via the suction cylinder and the upper opening of the bypass passage ,
The sucked air reaches the hot air generating section from the suction cylinder, is converted into hot air by the hot air generating section, and then passes through the lower opening of the bypass passage to reach the other room. , the upper opening of the bypass passage opens to an upper portion of the hot air generating section, and the lower opening of the bypass passage opens to a lower portion of the hot air generating section;
In the other room, set the Ebira containing the object to be processed,
A hot air dryer configured to The sucked air introduced from the suction cylinder into the hot air generating section is converted into hot air by the hot air generating section, then reaches the other room through the second connecting passage, and finishes its work in the other room. 2. The hot-air dryer according to claim 1, wherein the cooled air can be discharged from the exhaust pipe of the other room to the outside of the housing. The bypass passage is provided in the vertical direction on one side of the one room so as to be parallel to the heat exchange cylinder, the upper and lower openings are opened, and the opening below can be opened and closed by the second door. The hot air dryer according to claim 1. 2. The hot air dryer according to claim 1, wherein said second door is configured to block said bypass passage via said link mechanism when said first door is opened. The link mechanism includes a first rod penetrating through a bracket provided on the column of the housing, a first link provided on the first rod, one end fixed to the first link, and the other end fixed to the first link. A second rod fixed to the second door, a second link pivotally supported on the second rod, a third rod provided on the second link, and a third link provided on the third rod. 2. The hot-air dryer according to claim 1, further comprising a fourth rod which is fixed to the side surface of said first door. 2. The hot air dryer according to claim 1, wherein the housing is made entirely of stainless steel. The housing consists of one room with a damper-equipped suction pipe in one corner of the ceiling, and the other room separated from this one room and equipped with a damper-equipped exhaust pipe in a different corner of the ceiling,
An inner wall that separates the one room and the other room,
First and second connecting passages are formed above and below this inner wall,
This first connecting passage is an opening,
The second connecting passage is provided with a first door for opening and closing the second connecting passage,
A bypass passage having upper and lower openings is formed in the one room,
A second door is provided for opening and closing the lower opening of the bypass passage,
A link mechanism is provided between the second door and the first door, and the second door and the first door are arranged in an L shape in plan view,
The hot air generating part of the one room is provided with a burner with a fan, a heat exchange cylinder, and a fan that controls the flow of air and hot air,
via the suction cylinder and the upper opening of the bypass passage ,
The sucked air reaches the hot air generating section from the suction cylinder, is converted into hot air by the hot air generating section, and then passes through the lower opening of the bypass passage to reach the other room. , the upper opening of the bypass passage opens to an upper portion of the hot air generating section, and the lower opening of the bypass passage opens to a lower portion of the hot air generating section;
In the other room, set the Ebira containing the object to be processed,
In the hot air dryer configured to
The air introduced into the one room through the first and second connecting passages formed above and below the inner wall that separates the one room and the other room is converted into hot air in the one room, and the second room is heated. The object to be dried stored in the other room is dried by applying the hot air introduced into the other room through the connecting passage, and the hot air whose temperature has been lowered by the drying process is exhausted to the outside from the exhaust pipe. process,
When the other room is opened by the opening/closing door provided in the housing, the second connecting passage is closed by the first door, and the bypass passage of the one room is used to exhaust hot air from the one room. , a step of circulating in the bypass passage to avoid temperature drop of the hot air and/or the burner and/or heat exchanger in the one room;
An air blowing method for a hot air dryer comprising: 8. The method of blowing hot air for a hot-air dryer according to claim 7, wherein the hot air is circulated through the bypass passage except for the temperature drop in the drying process in the other room, thereby ensuring a constant heat.

Images