JPS635504Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a seaweed drying apparatus, in which a heat exchanger made of hygroscopic cardboard is disposed below the upper opening of the drying chamber.

(Prior Art) FIG. 3 shows a seaweed drying apparatus that has been widely implemented in the past. An air heating chamber 32 is arranged on the side of a drying chamber 31, and outside air is introduced by a fan 33. The heated air is heated by the heat radiation of the heat exchange duct 34, and the warmed air is sent to the lower part of the drying chamber 31, blown upward, and spread on the cage 35 that is conveyed on the endless conveyance path 37 inside the drying chamber 31. It was designed to dry seaweed 36.

(Problem to be solved by the invention) However, such a seaweed drying device does not allow drying of seaweed.
Since the exhaust gas from which moisture has been removed is directly discharged from the upper opening 38 of the drying chamber 31 to the upper part of the drying chamber 31 as shown by arrow A, the humidity state of the drying chamber 31 is not maintained. It is stable, and as a result, there is a problem that drying of the seaweed 36 tends to vary, making it difficult to produce high-quality dried seaweed.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a method for transporting the cage 2 along the endless transport path provided in the drying chamber 1, while In a seaweed drying apparatus that dries the seaweed 3 spread on the cage 2 by hot air that is sent in and blown upward, a heat exchanger 9 is disposed so as to close the upper opening 1a of the drying chamber 1. In addition, the heat exchanger 9 is made of hygroscopic cardboard.

(Function) By configuring the seaweed drying apparatus in this way, the heat exchanger 9 prevents the exhaust gas that has taken away the moisture from the seaweed from being directly discharged from the upper opening 1a of the drying chamber 1. The humidity condition in the drying chamber 1 is maintained well to enable uniform drying of the seaweed 3 without variation, and to improve thermal efficiency. In addition, by forming the heat exchanger 9 especially from hygroscopic cardboard, the heat exchanger 9 is made to breathe humidity according to the humidity of the exhaust gas, preventing drastic changes in the humidity in the drying chamber 1, and maintaining the humidity in the drying chamber 1 at an appropriate level. This allows for good drying.

(Example) Hereinafter, an example of the present invention will be described with reference to each figure.

FIG. 1 is a front view of a seaweed drying apparatus according to the present invention, in which 1 is a drying chamber, and a seaweed 3
The bamboo basket 2 on which is spread out is being transported. 4 is a holder for the screen 2, which is loaded on the endless chain 5. The endless chain 5 circulates in the drying chamber 1, and the screen 2 attached to the holder 4 is sent to the upper stage A side of the endless chain 5, transported from the upper stage A side to the lower stage B side, and spread on the screen 2. When the drying of the seaweed 3 is completed, it is carried out of the drying room 1. Reference numeral 6 denotes a windshield provided at the bottom of the drying chamber 1. Reference numeral 12 denotes an exhaust fan disposed in the upper opening 1a of the drying chamber 1. Due to the exhaust action of the fan 12, the exhaust gas that has taken away the moisture from the seaweed 3 is discharged to the outside of the drying chamber 1.

Reference numeral 9 indicates the fan 12 of the drying chamber 1 and the upper section A.
In between, there is a heat exchanger which is horizontally arranged so as to close the upper opening 1a of the drying chamber 1, and whose overall shape is approximately a long box, with an upper surface 9a, a lower surface 9b, a right side surface 9c, The left side surface 9d faces the upper opening 1a of the drying chamber 1, the upper stage A of the endless conveyance path, the lateral outside of the drying chamber 1, and the air heating chamber 10, respectively. Second
The figure is a partial perspective view of the heat exchanger 9, which includes an upper plate 91, a lower plate 92, and both plates 91, 9.
The hollow tubes 93 are made of a fibrous hygroscopic material such as cardboard, for example.

The right side surface 9c is exposed on the side wall surface of the drying chamber 1 and serves as an intake surface for outside air, and the left side surface 9d communicates with the air heating chamber 10 via a communication section 11, and is connected to the inside of the heat exchanger 9. This serves as an outside air exhaust surface that exhausts the outside air warmed by the heating chamber 10 toward the air heating chamber 10.
Therefore, the outside air is directed to the right side 9 as shown by arrow a.
c, the exhaust gas is drawn into the heat exchanger 9, passes between the tubes 93, and moves up toward the air heating chamber 10 while removing residual heat from the exhaust gas rising inside the tubes 93. Moreover, the air inside the drying chamber 1 rises inside each tube 93 as shown by arrow b, and is discharged outside the drying chamber 1 as exhaust gas from the opening 1a.

Reference numeral 13 denotes an opening/closing material consisting of a rotary damper, which is located on the left side surface 9d of the heat exchanger 9 in the communication section 11 formed between the upper part of the drying chamber 1 and the air heating chamber 10.
is placed at the top of the. This opening/closing member 13 is
By opening and closing this as appropriate, the exhaust gas containing a large amount of moisture that has passed through the heat exchanger 9 and exited to the upper part thereof is refluxed to the air heating chamber 10 as shown by arrow c, and steam is sent to the drying chamber 1. This is to prevent the seaweed 3 from cracking or cracking due to excessive drying.

The air heating chamber 10 is provided on the side of the drying chamber 1, and a heat exchange duct 7 is disposed inside the air heating chamber 10. The warm air generated by the heat radiation of the duct 7 is
The seaweed 3 is fed into the lower part of the drying chamber 1 through the communication port 14, is uniformized by the wind blower 6, and is blown upward to dry the seaweed 3. Note that the duct 7 is connected to a well-known burner (not shown), and hot air flows inside the duct 7. 17 is a fan disposed above the air heating chamber 10 of the communication section 11;
The air flows into the heating chamber 10 by the blowing action of the fan 17.
sent to.

Reference numeral 15 indicates a plurality of heat dissipation pipes horizontally arranged between the upper stage A and the lower stage B of the endless conveyance path.
A part of the hot air flowing inside the duct 7 is sent to each heat radiation pipe 15 through a pipe 16, and by the heat radiation of each heat radiation pipe 15, the seaweed 3 transported especially in the upper stage A is drying is accelerated.

This device consists of the above-mentioned configuration, with drying chamber 1
The warm air blowing up inside takes away the moisture from the seaweed 3, becomes exhaust gas, and is released to the outside world from the opening 1a.
By the way, since a heat exchanger 9 is installed in the upper part of the drying chamber 1, the upward movement of the high humidity warm air that has taken away the moisture from the seaweed 3 is obstructed by the heat exchanger 9, and the above-mentioned problem occurs. Since it is not directly released from the opening 1a to the outside of the drying chamber 1 as in the conventional case, the humidity condition inside the drying chamber 1 is maintained well.
The seaweed 3 is dried uniformly without any variation. In particular, since the tube body 93 constituting the heat exchanger 9 is made of a fibrous hygroscopic material such as cardboard,
A part of the moisture in the exhaust gas passing through the interior is absorbed by this tube 93, and this tube 93 becomes moisturized.
3 changes its own moisture content, so to speak, to breathe humidity, and exhibits the effect of maintaining the humidity in the drying chamber 1 in a better condition. Due to the action of the tube body 93, the humidity condition in the drying chamber 1 is better maintained, and high quality dried seaweed with good color and gloss is produced. In addition, fresh outside air enters the heat exchanger 9 from the right side 9c, flows laterally as shown by arrow a, and enters the drying chamber 9 as shown by arrow b.
After the exhaust gas rising in the heat exchanger 9 toward the upper opening 1a is heated by removing residual heat, it exits the left side surface 9d, which is the outside air exhaust surface, and passes through the communication part 11.
Since the air enters the drying chamber 1 after entering the air heating chamber 10 and being warmed again by the blowing action of the fan 17, the temperature of cold outside air can be raised with thermal efficiency.

(Effects of the invention) As explained above, the seaweed drying apparatus according to the invention has the heat exchanger 9 disposed so as to close the upper opening 1a of the drying chamber 1, and the heat exchanger 9 covered with hygroscopic cardboard. Since the high humidity warm air rising inside the drying chamber 1 is prevented from rising by the heat exchanger 9 and is not directly discharged from the upper opening 1a, the humidity inside the drying chamber 1 is reduced. The condition is maintained well, so it is possible to produce high-quality dried seaweed with a good color and gloss without any drying variations.In addition, since the heat exchanger 9 is installed in the exhaust gas discharge path, it is possible to It is possible to efficiently warm the outside air and greatly improve thermal efficiency. Furthermore, since the heat exchanger 9 is especially made of hygroscopic cardboard, it breathes humidity according to the humidity of the exhaust gas, suppressing drastic changes in the humidity in the drying chamber 1, and improving the humidity state in the drying chamber 1. It is possible to produce higher quality dried seaweed with good retention.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention.
The figure is a front view of a seaweed drying device, FIG. 2 is a partial perspective view of a heat exchanger, and FIG. 3 is a front view of a conventional one. 1...Drying chamber, 1a...Top opening, 2...
Screen, 3...Seaweed, 5...Endless conveyance path, 9...Heat exchanger.

Claims (1)

[Scope of utility model registration request] A seaweed drying method in which the seaweed spread on the screen is dried by hot air sent into the lower part of the drying chamber and blown upward while the screen is transported along an endless conveyance path provided in the drying chamber. A seaweed drying device, characterized in that a heat exchanger is disposed so as to close the upper opening of the drying chamber, and the heat exchanger is made of hygroscopic cardboard.