JPS632869Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a multi-stage shiitake mushroom ventilation dryer.

Shiitake mushrooms are particularly prized for their flavor, so if the drying process is not properly managed according to the size and moisture content of the raw shiitake mushrooms being processed, the quality will deteriorate and the product value will be lost.

An example of a shiitake mushroom dryer that has been commonly used in the past is shown in FIG. 1 as a vertical sectional view, and in FIG. 2 as a plan view.

Inside a box-shaped drying chamber 1, shrimp containers (shiitake mushroom containers having a ventilated bottom plate) 2 are arranged in a multi-tiered shelf configuration.

On the other hand, the hot air furnace 3 is equipped with a carbonization chamber 3a, a combustion chamber 3b, a chimney 3c, and a fan 3d.
The air sucked in the direction is heated and dry warm air is sent out in the direction of arrow B. 6a is drying room 1 and hot air oven 3
The upper air passage 6b communicating with the upper air passage is also a lower air passage.

The hot air sent in the direction of arrow B passes through a large number of shrimp 2 and rises as shown by arrows C and C', thereby drying the shiitake mushrooms 4 on the shrimp.

Since the absolute temperature of the air used to dry the shiitake mushrooms increases, ventilation is achieved by opening and closing the ceiling exhaust damper 5 as shown in FIG.

However, when shiitake mushrooms are dried using the conventional dryer described above, the warm air passes through Ebira 2 while rising from below, so the shiitake mushrooms stored in the Ebira on the lower stage dry quickly. The drying of shiitake mushrooms stored in the upper tier will be delayed. As a result, the shiitake mushrooms in the lower tier become overdried, and the drying time for the shiitake mushrooms in the upper tier becomes excessively long, resulting in a significant deterioration in quality.

In order to solve these problems, attempts have been made to guide warm air to the sides of the drying chamber 1 to circulate the inside of the drying chamber horizontally, but this method has the following problems. That is, in the case of relatively small shiitake mushrooms, the warm air passes through the shrimp, slowing down the drying process. In addition, in the case of relatively large shiitake mushrooms, warm air flows while touching one side of the umbrella, causing uneven drying of the umbrella, causing the umbrella to twist or bend, reducing its commercial value.

The present invention was created in view of the above circumstances, and its purpose is to provide a multistage shiitake mushroom ventilation dryer that can evenly dry shiitake mushrooms stored in each shrimp in a relatively short time. .

In order to achieve the above object, the multi-stage shiitake mushroom ventilation dryer of the present invention has (i) a ventilation path extending from below to above through shiitake mushroom containers arranged in multiple stages, and (ii) a ventilation path that bypasses the above-mentioned ventilation path. (iii) a plurality of horizontal ventilation paths branching from the middle of the bypass ventilation path and running along the shiitake mushroom container; ) A damper that distributes the warm air generated in the hot air stove to the ventilation passages in (i) and (ii) above, and (b) a plurality of ventilation passages from the ventilation passage in (ii) to (iii) above. A damper is provided for distributing warm air to each of the containers, so that the upward ventilation and horizontal ventilation passing through the shiitake mushroom container can be freely controlled as the drying state of the shiitake mushrooms progresses.

Next, one embodiment of the present invention will be described with reference to FIGS. 3 and 4. This embodiment is an improvement by applying the present invention to the conventional multistage shiitake mushroom ventilation dryer shown in FIG. 1, and the hot air oven 3 is the same component as the conventional one.

The drying chamber 1 is similar to the conventional device in that the interior can be ventilated in the vertical direction, but a wind tunnel 7 is provided adjacent to one side of the drying chamber 1, and the drying chamber 1 is installed on the side opposite to this wind tunnel 7. Multiple adjustment dampers 8
A to 8c are arranged vertically. Exhaust dampers 9a to 9d are provided on the side faces facing the adjustment dampers 8a to 8c, respectively. Thereby, a horizontal ventilation path is formed within the drying chamber 1.

A flow path switching damper 10 is provided so that hot air sent out from the hot air stove 3 as indicated by arrow B can be selectively distributed between the wind tunnel 7 and the lower space 1a of the drying chamber. Furthermore, an adjustment damper 11 is provided to restrict the flow path between the inlet side 1a- ₁ and the back side 1a- ₂ of the lower space 1a. 12 is a circulation adjustment damper provided in the upper ventilation passage 6a.

FIG. 4 is an external view of the embodiment, in which reference numerals 8a' to 8c' indicate operating levers for the adjusting dampers 8a to 8c, respectively. 10' is an operating lever for the flow path switching damper 10;
12' is an operating lever for the circulation adjustment damper 12.
13 is a peephole, and 14 is a thermometer.

The ventilation dryer configured as described above operates the flow path switching damper 10 to direct warm air to the lower space 1a of the drying chamber.
and the wind tunnel 7. Furthermore, by operating the adjustment damper 10, the warm air guided into the lower space 1a can be arbitrarily distributed in the direction of arrow C and the direction of arrow C', and the damper 8 guided into the wind tunnel 7 can be arbitrarily distributed.
It can be distributed to any horizontal flow path by opening/closing operations of a, 8b, and 8c.

An example of its usage is shown below.

Shiitake mushrooms (Hiwako) collected on a sunny day have a small cap diameter, so operate the flow path switching damper 10 to guide 2/3 of the warm air to the wind tunnel 7, and horizontally ventilate it to the 5 to 6 tiers of Ebira from above. give. At the same time, 1/3 of the hot air is sent into the lower space 1a, and upward ventilation is also used as shown by arrows C and C'.

In this case, due to the inertia of the air, arrow
Since the flow rate of C' is likely to be large, the adjusting damper 11 is operated to divide the air volume evenly. In this way, when the drying of the shiitake mushrooms in the upper 5 to 6 tiers has progressed by about half, all the hot air is guided to the lower space 1a to create an upward ventilation state and the drying is completed. In the case of Hiwako, this operation dries the entire amount uniformly in a short time.

In addition, in the case of shiitake mushrooms (Ameko) collected on a rainy day, all warm air is initially guided into the wind tunnel 7, and the amount of ventilation in the upper stage is increased and the amount of ventilation in the lower stage is adjusted to be lower, and then the air is distributed horizontally. Ventilate. In this way, when the drying of the upper 10 stages has progressed to about 60%, the mushrooms will shrink and will no longer obstruct ventilation, so at this point all hot air will be switched to upward ventilation to complete drying. In Ameko's case, this operation allows everyone to dry evenly in a short time.

As described in detail above, according to the multi-stage shiitake mushroom ventilation dryer of the present invention, the shiitake mushrooms stored in each shrimp in the drying chamber can be dried evenly in a relatively short time, and the quality of the shiitake mushrooms can be maintained and the drying process of shiitake mushrooms can be improved. There are many ways in which this technology can contribute to improving efficiency.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of a conventional multistage shiitake mushroom ventilation dryer, and FIG. 2 is a plan view of the same. FIG. 3 is a vertical sectional view of one embodiment of the multistage shiitake mushroom ventilation dryer of the present invention, and FIG. 4 is a front view of the same. 1...Drying room, 1a...Drying room lower space, 2...
...Ebira, 3...Hot stove, 4...Shiitake mushroom, 5...Exhaust damper, 6a...Upper ventilation duct, 6b...Lower ventilation duct, 7...Wind tunnel, 8a-8c...Adjustment damper,
9a to 9d...Exhaust damper, 10...Flow path switching damper, 11...Adjustment damper, 12...Circulation adjustment damper, 13...Peephole.

Claims (1)

[Scope of utility model registration request] In a multi-stage shiitake mushroom ventilation dryer, in which a plurality of shiitake mushroom containers (ebira) each having a ventilation-permeable bottom plate are arranged in a multi-stage shelf shape in a drying chamber, and a means for ventilation is provided in the drying chamber, (i) the multi-stage (ii) a ventilation passage that goes from below to above through the shiitake mushroom containers arranged in the drying chamber; (ii) a ventilation passage that bypasses the ventilation passage and goes from below to the top on the side of the drying room; and (iii) the bypass ventilation passage. A plurality of horizontal ventilation channels are provided along the shiitake mushroom container, branching off from the middle of the container, and (a) hot air generated in the hot air oven is transferred to the ventilation channels in (i) and (ii) above. and (b) a damper that distributes hot air to each of the plurality of ventilation passages from (ii) to each of the plurality of ventilation passages (iii).
A multistage shiitake mushroom ventilation dryer characterized in that upward ventilation and horizontal ventilation passing through a shiitake mushroom container can be freely controlled according to the progress of the drying state of the shiitake mushrooms.