JP2023038438A - Drying machine - Google Patents

Abstract

To uniformly dry objects in a tray on each stage even when the trays are installed side by side on a plurality of stages.SOLUTION: In a shelf frame 110 in a drying room 100, a plurality of drying shelves 120 are provided. On tray receivers 122 for the drying shelves 120, trays 124 are put, respectively, in which seeds to be dried are stored. Into an air supply chamber 220 of an air supply room 200, drying air is supplied from an air supply port 302 by a circulation fan FM of a drying control unit 300. The air is fed to the tray receivers 122 by blowing fans 230, flows downward from the tray receivers 122 to the front side of the drying room 100 after drying the seeds in the trays 124, and is exhausted through the underfloor side from an exhaust port 304 to the drying control unit 300 side. The fan control device 400 controls the operation of the blowing fans 230 to uniform the amount of air to be blown to the trays 124.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a dryer for plant seeds, for example, and more particularly to improvement of a dryer suitable for a case where there are a plurality of trays for drying.

As a dryer having a plurality of trays, for example, there is a "seeded rice drying apparatus" described in Patent Document 1 below. In this method, a net bag of soaked rice is set in each of a plurality of stacked drawers and stored in a dryer frame. When the dry air supply means is driven, the dry air flows from one side of each drawer into the raw material net bag, escapes to the other side, and then exits the machine through the air exhaust path and the air exhaust port. be exhausted. As a result, the soaked rice in each drawer is individually dried.

JP 2008-14517

However, in the background art described above, the drying air is supplied from the lower side of one side of the dryer on which the drawer bodies are stacked, and the drying air is discharged from the exhaust passage provided on the other side of the dryer. It has become so. For this reason, the drying air is not uniformly supplied to the superimposed drawer bodies. That is, the lower drawer body has a larger air volume than the upper drawer body, and there is a possibility that the drying state of the seeds may differ from one drawer body to another.

The present invention focuses on the above points, and provides a dryer that can uniformly dry objects on each tray even when the trays are stacked in multiple stages. That is the purpose.

The present invention is a dryer for drying the object to be dried by blowing air from a blower control unit into a drying chamber in which a plurality of trays containing the object to be dried are arranged side by side, wherein the drying chamber is partitioned by a partition wall. , an air supply chamber to which air is supplied from the drying control unit, a tray receiver for placing the tray and blowing air to the object to be dried on the tray, and each tray receiver provided at a portion extending from the air supply chamber. A blower fan and a fan controller for controlling the number of rotations of each of the blower fans are provided, and the fan controller controls the number of rotations of each of the blower fans so that the amount of air blown is uniform for each of the trays. It is characterized by controlling.

According to one of the main aspects, the fan control device is characterized by controlling the air volume of each blower fan by inverter control. The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description and accompanying drawings.

According to the present invention, a blower fan is provided for each tray arranged in a plurality of stages to control the air volume. Therefore, the air volume in each tray can be made uniform, and the object can be uniformly dried. can.

It is a figure which shows the Example of this invention. It is a figure which shows the mode of the air blowing with respect to each tray. It is a figure which shows the state of air blowing when several trays are arrange|positioned horizontally.

BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will now be described in detail based on examples.

FIG. 1 shows an overall view of an embodiment of the dryer of the invention. In the figure, a drying chamber 100 is provided on the front side (left side of the drawing) of the dryer, and a drying control unit 300 is provided on the rear side (right side of the drawing). An air supply chamber 200 is provided between the drying chamber 100 and the drying control unit 300 .

Of these, the drying chamber 100 has a shelf frame 110 , and the shelf frame 110 has a plurality of drying shelves 120 . Each drying rack 120 has a tray 124 for containing seeds and the like placed on the upper surface side of a tray receiver 122, and the bottom surface of these trays 124 is mesh-like so as to allow ventilation. As a result, the air blown from the tray receiver 122 passes through the bottom surface of the tray 124 and is sent to the object to be dried, as indicated by the arrows in the figure. The tray receiver 122 is configured to be inclined so as to become deeper toward the air supply side (right side in the drawing).

Next, the air supply chamber 200 is separated from the drying chamber 100 by a partition wall 210 and has an air supply chamber 220 for supplying the drying air to the drying chamber 100 . Inside the air supply chamber 220, the tray receiver 122 described above is extended, and a blower fan 230 is provided at each end thereof. A distribution plate 126 for regulating the air is provided on the air output side of the blower fan 230, if necessary. Between the drying chamber 100 and the drying control unit 300 on the rear side, an air supply port 302 is provided on the upper side, and an exhaust port 304 is provided on the lower side.

That is, the air supplied from the drying control unit 300 to the air supply chamber 220 of the air supply chamber 200 through the air supply port 302 is not directly supplied to the drying chamber 100 due to the presence of the partition wall 210, to the drying chamber 100. Also, the seeds of the tray 124 of the tray receiver 122 come to hit. The air discharged from each tray 124 is led from the front side of the drying shelf 120 to the underfloor side and returns to the drying control unit 300 through the air outlet 304 . Drive control of each blower fan 230 is performed by a fan control device 400 .

Next, various types may be applied as the drying control unit 300, but in the illustrated example, a heater unit 310, a cooler unit 320, a unit control device 330, and a fan control device 400 are provided. An intake port OA and an exhaust port EA are provided on the rear side of the drying control unit 300, respectively. Cooler unit 320 includes a dehumidifier (not shown). As a result, heated air or dehumidified/cooled air is supplied from the circulation fan (main fan) FM to the air intake chamber 220 of the air intake chamber 200 .

The drying chamber 100, the air supply chamber 200, and the drying control unit 300 are provided with temperature and humidity sensors as required. It is controlled by the control device 330 . The operating state is displayed on the display 312 installed on the front upper side of the dryer. For example, during operation/stop, remaining time, temperature, humidity, dew point temperature, etc. are displayed.

Next, the operation of the air supply chamber 200 in this embodiment will be described. Drying air is supplied from the circulation fan FM of the drying control unit 300 to the air supply chamber 220 of the air supply chamber 200 through the air supply port 302 . Air is directed to tray receiver 122 by blower fan 230 . After drying or cooling the seeds in the tray 124 from the tray receiver 122, the seeds flow downward on the front side of the drying chamber 100, pass under the floor, and are exhausted from the exhaust port 304 to the drying control unit 300 side.

In this case, conventionally, the air supplied from the drying control unit 300 would flow in the easy-to-flow direction, resulting in nonuniformity with respect to each tray 124 . Therefore, in this embodiment, the operation of each blower fan 230 is controlled by the fan control device 400 so that the amount of air blown to each tray 124 is uniform. Specifically, control is performed by an inverter control method, and the frequency of inverter control is set for each blower fan 230 of each stage. This setting is performed by the touch panel 410 provided on the front door of the drying chamber 100 .

In the case of this embodiment, air is supplied from the upper side of the air supply chamber 200, so that in the conventional case, the force of the wind is weaker in the lower tray than in the upper tray. Therefore, in this embodiment, the frequency of the inverter control is adjusted by operating the touch panel 410, and is controlled by the fan control device 400 so that the current of each blower fan 230 becomes uniform. If the current of blower fan 230 is the same, it can be considered that the air volume is also the same. As a result, the air volume supplied to each tray 124 is made uniform above and below the drying shelf 120 .

FIG. 2 shows the situation. 8A shows the case where the blower fan 230 is not provided, and the higher the tray 124 is positioned, the more air is blown, and the lower the tray 124 is, the lower the air flow is. On the other hand, according to this embodiment, as shown in FIG. Further, the distribution plate 126 allows the air sent from the blower fan 230 to spread evenly over the entire tray 124 .

As described above, according to this embodiment, even when a plurality of trays 124 are stacked, the blower fan 230 is provided for each tray 124. Uniformity can be achieved, and the seeds accommodated in each tray 124 can be uniformly dried.

<Other Embodiments> The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. For example:
(1) The shapes and structures shown in the above embodiments can be changed so as to achieve similar functions. For example, the number of trays 124 stacked in the drying chamber 100 and the number of rows installed in the horizontal direction may be changed as needed.
(2) The configuration of the drying control unit 300 shown in the above embodiment is also an example, and various configurations may be employed.
(3) In the above embodiment, the blower fan 230 is provided at the end of the tray receiver 122. It may be in a direction tilted from the vertical direction. Also, it may be provided on the side surface of the tray receiver 122 .
(4) In the above embodiment, the blower fan 230 is provided for each tray receiver 122, but one blower fan may be provided for each of the upper and lower multiple stages (for example, two stages).
(5) Seeds are one of the preferred examples of the application target of the present embodiment, but the present invention can be applied to various target objects.
(6) In the above embodiment, the trays 124 are stacked vertically, but even if they are arranged horizontally, each tray may be provided with a blower fan in order to equalize the amount of blowing air. FIG. 3 shows this state, in which the tray receiver 122 and the tray 124 are arranged horizontally. The blower fan 230 uniformly controls the amount of air blown to each tray 124 .

According to the present invention, a blower fan is provided for each tray arranged in a plurality of stages to control the air volume. Therefore, the air volume in each tray can be made uniform, and the object can be uniformly dried. Therefore, it is suitable for dryers for seeds and the like.

100: Drying chamber 110: Shelf frame 120: Drying shelf 122: Tray receiver 124: Tray 126: Distributing plate 200: Air supply chamber 210: Partition wall 220: Air supply chamber 230: Blower fan 300: Drying control unit 302: Air supply port 304: Air outlet 310: Heater unit 320: Cooler unit 330: Unit control device 312: Display 400: Fan control device 410: Touch panel EA: Air outlet FM: Circulation fan OA: Air inlet

Claims (2)

A dryer that dries the object to be dried by blowing air from a drying control unit into a drying chamber in which a plurality of trays containing the object to be dried are arranged side by side,
an air supply chamber partitioned from the drying chamber by a partition wall and supplied with air from the drying control unit;
a tray receiver for placing the tray and blowing air to the object to be dried on the tray;
a blower fan provided at a portion of each tray receiver extending to the air supply chamber;
a fan control device for controlling the rotation speed of each blower fan;
and
The dryer according to claim 1, wherein the fan control device controls the number of rotations of each of the blowing fans so that the blowing amount of each of the trays is uniform. 2. The dryer according to claim 1, wherein the fan control device controls the air volume of each blower fan by inverter control.

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