JPS6129031Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hot air generator that can efficiently and smoothly dry shiitake mushrooms.

[Prior art and its problems]

Conventional shiitake mushroom dryers are, for example,
Like the device described in the publication, a ventilated partition is provided at the lower part of the interior of the drying box, a drying chamber is formed above it, a hot air supply chamber is formed below it, and an opening at the upper end of the drying chamber is formed. The structure included a cover with an exhaust volume adjustment port.

However, with such conventional devices, when adjusting hot air according to the drying stage of shiitake mushrooms, the opening degree of the exhaust volume adjustment port in the cover is adjusted while the hot air blower is kept rotating. This method had the disadvantage that it was not possible to carry out resource-saving measures such as carrying out an appropriate drying process depending on the drying stage of shiitake mushrooms or recycling waste heat.

[Purpose of invention]

The present invention solves these conventional drawbacks and makes it possible to efficiently remove the moisture contained in shiitake mushrooms by bringing hot air into contact with the mushrooms during the early stage of drying, and by circulating air within the drying room during the middle stage of drying. This method prevents the shiitake mushrooms from drying rapidly, and also prevents the flavor of the mushrooms from escaping.In the final stage of drying, drying is performed using residual heat to save fuel costs, and in the final stage of drying, the mushrooms are finished by natural drying. The purpose is to implement appropriate drying processes depending on the stage and to save resources.

[Configuration of the invention]

The hot air generator for the shiitake mushroom dryer according to the present invention includes an air blowing box 4 with an outside air intake port (1) that can be opened and closed at the tip and an open base end, and a hot air inlet for the shiitake mushroom drying room at the tip. It consists of a hot air outlet 5 which can be freely opened and closed and which has a furnace 6 and a secondary air outlet 7 at its base end. An indoor air intake port 2 communicating with an air exhaust port inside the drying room is provided so as to be freely openable and closable, and a blower 3 is provided inside the air blowing box 4, and the hot air discharging box 9 is located on the top surface of the air blowing box 4. A large number of finish drying windows 8 extending up to the base end are provided so as to be freely openable and closable so as to communicate with the entire bottom surface of the shiitake mushroom drying chamber, and the opening at the base end of the ventilation box 4,
The hot air discharge box 9 is characterized in that both boxes are connected in such a manner that the opening formed in the side of the furnace 6 near the base end of the box 9 communicates with each other.

〔Example〕

The present invention will be explained below based on embodiments shown in the drawings.

Fig. 1 is a front view showing an embodiment of a hot air generator according to the present invention, Fig. 2 is a plan view thereof, and Fig. 3 is a perspective view thereof. and a hot air discharge box 9, and is installed at the bottom of the shiitake mushroom drying chamber shown by the dashed line in FIG.

The air blowing box 4 is open at both ends, and the tip opening is configured as an outside air intake port 1, which can be opened and closed by a damper 15. An indoor air intake port 2 is provided on the top surface of the front end of the box 4, and the damper 13
It can be opened and closed freely. Further, inside the box 4, a blower 3 driven by a motor 12 is installed.
is installed. In this embodiment, a curtain 11 for preventing hot air backflow is installed on the base end side of the blower 3 in the same box 4, so that even if the blower 3 stops due to a sudden power outage or the like at high temperatures, the hot air will flow to the blower 3 and the motor 12. The structure is designed to prevent fires or malfunctions due to backflow.

The hot air discharge box 9 has a hot air discharge port 5 that can be freely opened and closed, which communicates with a hot air inlet of a shiitake mushroom drying chamber (not shown) at its distal end, and a furnace 6 and a secondary air outlet 7 at its base end. A large number of finishing drying windows 8 are provided on the upper surface of the shiitake mushroom drying chamber in a range extending from the tip end to the base end thereof, and are openable and closable so as to communicate with the entire bottom surface of the shiitake mushroom drying chamber.

This hot air discharge box 9 is provided with an opening on the side near the base end, and both boxes are connected such that the opening communicates with the opening provided at the base end of the air blowing box 4. ing.

In this embodiment, the hot air outlet 5 in the hot air outlet box 9 is provided on the top and side surfaces of the tip.
A hot air direction plate 10 was provided at each discharge port 5.
This hot air direction plate 10 is for convection of hot air in a certain direction in the shiitake mushroom drying chamber.In particular, the hot air direction plate 10 provided on the side of the box 9 is curved upward from the lower edge of the hot air outlet 5. The shape allows air to be supplied to the shiitake mushroom drying room.

The operation of this device will be described below.

[Heat drying]

First, after shiitake mushrooms are pasted or placed on, for example, a rotating rack inside the shiitake drying room, the temperature of the furnace 6 is raised using oil, firewood, or the like. Next, fully open the damper 15 of the outside air intake port 1, and then fully open the damper 15 of the indoor air intake port 2.
3 and finish drying window 8 are closed. When the motor 12 is started and the blower 3 is moved, air entering from the outside air intake port 1 is passed through the blower box 4 by the blower 3 and enters the hot air discharge box 9. Air is heated by a furnace 6 provided in this box 9, and hot air is sent into the shiitake mushroom drying chamber from a hot air outlet 5. The hot air sent into the drying chamber circulates within the chamber and is then discharged to the atmosphere through the exhaust port. Thereby, the moisture contained in the shiitake mushrooms can be efficiently removed in the early stage of drying.

[Circulation drying]

When the shiitake mushrooms have dried to some extent (for example, about half), the outside air intake port 1 is closed, and the indoor air intake port 2 is opened to circulate the indoor air for drying the shiitake mushrooms. As a result, the water and aroma that evaporated from the shiitake mushrooms are circulated again into the shiitake drying chamber, and by repeatedly touching the shiitake mushrooms, the mushrooms can be dried without losing much of their flavor, resulting in high-quality mushrooms. Shiitake mushrooms can be dried. Additionally, since the warm air once used for drying is recirculated and used again, fuel consumption can be reduced.

[Residual heat drying]

Up to a certain point according to the above (for example, up to the 8th part)
After drying, use of the furnace 6 is stopped, all of the finishing drying windows 8 are opened, and drying is performed using residual heat in the furnace 6 and the shiitake drying room. Thereby, fuel costs can be reduced in the final stage of drying.

[Natural Drying] When the drying by the residual heat air is completed, the operation of the blower 3 is stopped, the secondary air outlet 7 is opened, and outside air is drawn in (natural convection) to perform natural drying. This allows finishing by drying at room temperature in the final stage of drying.

In this way, an appropriate drying method can be adopted depending on the drying stage of the shiitake mushroom.

[Effect of idea]

As mentioned above, in the present invention, the ventilation box 4
The outdoor air intake 1, indoor air intake 2 and blower provided with By opening/closing or operating in this way, it is possible to adopt an appropriate air blowing method depending on the drying stage, thereby drying the shiitake mushrooms to a high quality.Also, since warm air is circulated and residual heat is utilized, This has the effect of reducing fuel costs and electricity, and conserving resources.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of a hot air generator for a shiitake mushroom dryer according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a perspective view thereof. 1...Outside air intake, 2...Indoor air intake, 3
...Blower, 4...Blower box, 5...Hot air outlet, 6...Furnace, 7...Secondary air outlet, 8...
Window for finishing drying, 9...Box for discharging hot air.

Claims (1)

[Scope of Claim for Utility Model Registration] A ventilation box 4 equipped with an outside air intake port 1 that can be opened and closed at the tip and open at the base end, and a hot air outlet 5 at the tip that communicates with the hot air inlet of the shiitake mushroom drying room. It consists of a hot air discharge box 9 that can be opened and closed and is equipped with a furnace 6 and a secondary air outlet 7 at its base end. An indoor air intake port 2 is provided so as to be freely openable and closable, and a blower 3 is provided inside the air blowing box 4, and the hot air discharging box 9 is located on the upper surface thereof and extends over a range from its tip to its base end. A large number of finishing drying windows 8 are provided so as to be freely openable and closable so as to communicate with the entire bottom surface of the shiitake mushroom drying chamber, and the opening at the base end of the air blowing box 4 and the furnace 6 near the base end of the hot air discharge box 9 are provided. 1. A hot air generator for a shiitake mushroom dryer, characterized in that both boxes are connected to each other so that the boxes communicate with an opening formed in a side part of the box.