JPS611370A - Laver dryer - Google Patents

Abstract

PURPOSE:To obtain good finished dried laver without fluctuation of place and time of laver drying, by providing a laver drying chamber with an almost closed structure, and adjusting the air flow rate blown from warm air blowing ducts to laver screen transferring spaces with an air flow rate controller. CONSTITUTION:A laver dryer equipped with a drying chamber 1 having the upper endless transfer path 2 for laver (m) having the upper part closed with a ceiling member (1a) to give an almost closed structure thereto, plural warm air blowing ducts 5 having warm air blowing holes 7 side by side provided below laver screen transferring spaces (A), directing openings 9 thereof to the side of a heat exchange chamber 10, and air flow rate controllers 23 at the respective openings 9 for controlling the warm air blown on the laver (m) on the transferring path 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seaweed drying device, in which the seaweed drying chamber has a substantially closed structure, and the amount of air blown from a warm air blowing duct to a seaweed cage conveying space is controlled by an air volume controller. This allows for uniform drying of seaweed in response to variations in location and time of drying.

Drying of seaweed is carried out by warming the air in a heat exchange chamber installed on the side of the drying chamber and sending the warm air into the drying chamber.
Generally, several dozen pieces of seaweed are transported along the conveyance path, and it is extremely difficult to dry these large numbers of seaweed evenly.
Poorly dried seaweed, such as under-dried or over-dried seaweed, was likely to occur. In particular, this type of nori drying room is quite large (generally over 10 meters in length), so the warm air does not spread evenly and evenly throughout the drying room, making it difficult to dry the nori in places.
This tends to cause temporal variations. In addition, conventional seaweed drying rooms of this type have an open structure at the top, and the warm air that has taken away the moisture from the seaweed is released directly to the outside world through this open top, resulting in poor thermal efficiency. Rather than controlling the volume of warm air sent to the drying room,
Furthermore, there were problems such as it was extremely difficult to accurately control the humidity and temperature in the drying room.

The present invention has been made in consideration of the above points, and by making it possible to accurately adjust the amount of air sent into the drying room, all the seaweed that is sent through the drying room can be uniformly and thermally efficiently processed. This was developed for the purpose of providing a new seaweed drying device that can dry seaweed. In a seaweed drying apparatus equipped with a heat exchange chamber communicating with the drying chamber, the drying chamber 1 is made into a substantially closed structure by closing the upper part of the drying chamber with a ceiling member 1a, and the laver in the drying chamber 1 is conveyed in a cage. A plurality of warm air blowing ducts having warm air blowing holes formed on at least the upper surface of the space are arranged in parallel below the space with the openings facing the heat exchange chamber side, and each opening is provided with an air volume regulator. By operating each of the air volume regulators, the volume of warm air sent to each duct is adjusted, and the volume of warm air sent from each duct to the seaweed cage conveyance space is accurately controlled to dry the seaweed depending on the location. This method eliminates temporal variations, thereby making it possible to dry seaweed uniformly and produce dried seaweed with a good finish. The present invention will be described in detail below with reference to the drawings.

1 to 4 show a seaweed drying apparatus according to the present invention, in which 1 is a seaweed drying chamber, and inside the drying chamber 1 is an endless chain 2 constituting an endless conveyance path for seaweed. is installed. The drying chamber 1 has a substantially closed structure as described later.

25.2G is an inlet and an outlet formed in the front of the drying chamber 1, and UI-ra 27 is provided above and below each 125.26, and the seaweed held in the boulder 3 is The screen 4 passes between the rollers 27 and is taken in and out of the drying chamber 1 during the winter months 25 and 26. Each roller 27 is in winter 25.
26 as much as possible to improve the airtightness of the drying chamber 1. The holder 3 is loaded on the endless chain 2 and transported through the drying chamber 1, and the nori m spread on the cage 4 is dried. Reference numeral 5 denotes a number of approximately box-shaped warm air blowing ducts arranged in parallel below the seaweed cage conveyance spaces A, A, with the openings 9 directed toward the heat exchange chamber 10 disposed on the side of the drying chamber 1. They are arranged side by side, and the inside is a warm air blowing space B.

Reference numeral 6 denotes the upper plate of the duct 5, on which a large number of warm air blowing holes 7 are formed. Reference numeral 8 denotes a lower plate of the duct 5, which is installed obliquely with an upward slope from the heat exchange chamber 10 side to the other side. The drying room 1 has an upper and lower seaweed cage transport space A,
The drying chamber 1 is divided into two sections A, and by providing the ceiling member 1a, the drying chamber 1 has a substantially closed structure.

The upper part of the heat exchange chamber 10 is closed by a ceiling member 10a, so that the heat exchange chamber 10 has a substantially closed structure, and a heat exchange duct 11 is disposed inside the heat exchange chamber 10. The duct 11 is connected to a well-known burner (not shown), and high-temperature hot air heated by the burner circulates inside the duct 11, and the air around the duct 11 is warmed by heat radiation.

2 is an air flow path provided at the lower part of the drying chamber 1, and a fan 13 is provided at the boundary between the flow path 12 and the heat exchange chamber 10. This fan 13 rotates in a direction to blow air toward the heat exchange chamber 1o. Heat exchange room 1
The indoor space C at .degree. communicates with the warm air blowing space B to form the same space D (the space surrounded by a chain line in FIG. 2). The space is a substantially or substantially closed space, and air is forced into the space by the fan 13, so that the air pressure in the space is reduced by the fan 13. 13, the air pressure is kept substantially constant, and the space constitutes a substantially constant pressure space. 14 is a partition plate that also serves as air guide.

15 is a heat exchanger disposed on the opposite side of the heat exchange chamber 1o of the drying chamber 1, and a part of the warm air blown up into the spaces A and A passes through the circulation passage 12. The heat exchanger 1o is again sent into the heat exchange chamber 1o by the fan 13, and a part of it passes through the heat exchanger 15 and is exhausted from the exhaust port 16 below. 2
1 is an exhaust fan. Further, an air intake port I7 is provided above the heat exchanger 15, and the air taken in from the air intake port 17 passes through the heat exchanger 15 and is sent into the heat exchange chamber 10 by the fan 13. When passing through the chamber 15, the warm air flowing toward the exhaust port 16 absorbs heat, is heated to a considerable temperature, and is then sent to the heat exchange chamber 10 by the fan 13. Reference numeral 18 denotes an air volume adjusting damper disposed at the intake port 17, and 19 an air flow path on the side of the drying chamber 1, which together with the flow path 12 and the like constitutes a warm air circulation path. 22 is a fan disposed in the flow path 19. Reference numeral 23 denotes a damper as an air volume regulator disposed in each of the openings 9, and the details thereof will be explained next with reference to FIG. 5.

Each damper 23 is rotatably attached to the same rotating shaft 25 via a collar 24, and is located in front of each opening 9 of each duct 5. 26 is a bearing for the rotating shaft 22. 27 is an upright operating rod of the damper 23, which is attached to the collar 24 via a connecting plate 28, and its upper end is connected to the ceiling +A' of the heat exchange chamber 10.
I Projects above Oa (see also Figure 2)
. The upper end of the operating rod 27 is a threaded portion 271, and when the Nand 29 screwed onto the threaded portion 271 is rotated to move the operating rod 27 up and down, the damper 23 rotates around the rotating shaft 25 and opens. 9 is opened and closed. Each damper 23 of each opening 9 can be rotated independently of the other dampers 23 by each operating rod 27, thereby freely controlling the volume of warm air sent into each duct 5. It is adjustable. In Figure 3, 3
0 is a papermaking section, 31 is a dewatering section, and 32 is a peeling section.

This seaweed drying device has the above-mentioned configuration, and has an air intake port I.
The outside air taken in from 7 is transferred to heat exchange chamber 1 by fan 13.
0 and is heated to an appropriate temperature by the heat radiation of the heat exchange duct 11, the warmed air enters each duct 5, and is blown out from the air outlet 7 into the seaweed conveying spaces A,
The seaweed m spread on the screen 4 is dried. At this time, the air is forcibly sent into the almost closed space by the fan 13, so the inside of the space is in a substantially constant pressure state. Therefore, the warm air in the duct 5 is uniformly distributed from each blowout hole 7 to the space A, Blow out towards A. A portion of the warm air that has removed the moisture from the seaweed m is sent back into the heat exchange chamber IO by the fan 13 as described above, and a portion of it is exhausted from the exhaust port 16. In addition, due to the ventilation action of the fan 22 provided on the exhaust side of the spaces A, A,
The inside is in a reduced pressure state, and therefore the seaweed m is dried under reduced pressure, further increasing its drying effect. In particular, since the main drying chamber 1 has a substantially closed structure with a ceiling member 1a disposed above it, the warm air rising from the spaces B and B to the spaces A and A does not reach the same level as in the conventional drying chamber. As such, the heat exchanger chamber 10 passes through the flow path 19 without being released directly to the outside world, where the temperature is raised again to the appropriate temperature and sent to the drying chamber 1, resulting in extremely high thermal efficiency and drying. This has the advantage that the effect of reducing the pressure in the chamber 1 can also be enhanced.

By the way, as mentioned above, this type of seaweed drying chamber is generally quite large in size, and therefore the drying of the seaweed m tends to vary depending on location or time. In order to eliminate such drying variations and to always dry each piece of seaweed m uniformly and appropriately, it is necessary to accurately control the blowing of warm air onto the seaweed m transported in the seaweed cage transport spaces A and A. Become. Therefore, in this device, ducts 5 that blow out warm air toward the spaces A and A are arranged in parallel below the spaces A and A,
In addition, since the volume of warm air sent to each duct 5 can be freely adjusted independently each time the damper 23 is opened and closed, the spaces A and A can be adjusted in accordance with the location and temporal fluctuations of seaweed drying. It is possible to accurately and finely control the volume of warm air blown out to dry seaweed m uniformly and appropriately, and to produce dried seaweed with a good finish.

Furthermore, since the drying chamber 1 has a substantially closed structure with the ceiling member 1a installed, the amount of air sent into the drying chamber 1 can be accurately adjusted, and the humidity in the drying chamber 1 can be adjusted accurately. Temperature can be adjusted more accurately.

FIG. 6 shows another embodiment of the invention, in which each damper 23 is attached to the same collar 29 and is operated by a single operating rod 21. In FIG. That is, each damper 23 is different from the first embodiment in that each damper 23 rotates together by operating a single operating rod 27.

FIG. 7 shows still another embodiment of the present invention,
A humidity detector 33 is provided within the drying chamber 1.

The detector 33 is connected to a control circuit 34, and the control circuit 3
4 is a gear 3 that meshes with the threaded portion 271 of the operating rod 27;
It is connected to a motor 36 that drives the motor 5. In this configuration, when the humidity in the drying chamber 1 becomes higher than the value set in the control circuit 34, the motor 36 is driven to rotate the gear 35 in a direction that opens each damper 23, and when the humidity becomes lower than this, the motor 36 is reversed and each damper 23
Closes - Rotates gear 35. In this way, the damper 23 may be opened and closed automatically using the humidity detector 33, the control circuit 34, or the like.

The present invention is not limited to the above-mentioned embodiments, and various design changes are possible. It can also be used in other types of seaweed drying equipment.

As described above, the seaweed drying apparatus according to the present invention includes a drying chamber 1 in which an endless conveyance path 2 for seaweed m is provided, and a drying chamber 1
a heat exchange chamber 10 disposed on the side of the drying chamber 1 and communicating with the drying chamber 1;
In the nori drying apparatus, the upper part of the drying chamber 1 is closed with a ceiling member 1a to make the drying chamber 1 into a substantially closed structure, and at least the upper surface A plurality of hot air blowing ducts 5 each having a warm air blowing hole 7 formed therein are arranged in parallel with their openings 9 facing the heat exchange chamber 10 side, and each opening 9 is provided with an air volume regulator 23. By operating the air volume regulator 23, the warm air blown onto the seaweed m on the conveyance path 2 is accurately controlled in response to local or temporal variations in seaweed drying.
This method has the advantage of being able to produce dried seaweed with a good finish by eliminating variations in drying.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of a seaweed drying device, Fig. 2 is a front view, Fig. 3 is a side view,
4 is a partial side view, FIG. 5 is a partial perspective view, FIG. 6 is a partial perspective view of another embodiment of the invention, and FIG. 7 is a side view of still another embodiment of the invention. 1...Drying room 2...Endless chino as an endless conveyance path 4...Storage 5...Warm air blowing duct 7...Warm air blowing hole 9...Opening 10...Heat exchange room 23. ...Damper as an air volume regulator m...Seaweed A...Seaweed cage conveyance space

Claims (1)

[Claims] In a seaweed drying apparatus comprising a drying chamber in which an endless transport path for seaweed is provided and a heat exchange chamber arranged on the side of the drying chamber and communicating with the drying chamber, the upper part of the drying chamber is connected to the ceiling. Part 1
a to make the drying chamber 1 into a substantially closed structure, and a warm air blowing duct having warm air blowing holes formed at least on its upper surface below the seaweed cage conveying space of the drying chamber 1 is connected to the heat exchange chamber through its opening. A seaweed drying device characterized in that a plurality of seaweed drying devices are arranged side by side and each opening is provided with an air volume regulator.