JPS627469B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a hot air system that can automatically increase or decrease the amount of hot air supplied and the number of revolutions of the hot air rotor depending on the drying condition of the object to be dried to perform effective drying work. Regarding drying equipment.

A hot air rotor is installed approximately in the center of the upper part of the room, and rotates in one direction due to the reaction of hot air blowing out.
In a hot air drying device that dries objects to be dried using hot air that is distributed and distributed in layers while changing its position from the top to the bottom of the room, the hot air is distributed in proportion to the diameter of the hot air rotor. If you do not properly determine the size of the hot air outlet that blows out, you will not be able to obtain accurate reaction force and the hot air rotor will not be able to rotate in a stable state. When trying to rotate under such conditions, the amount of hot air blowing out will inevitably remain approximately constant.
Depending on the drying conditions, it is not possible to increase or decrease the number of revolutions of the hot air rotor, or to distribute hot air of different temperatures and air volumes from the hot air rotor at any time.

Therefore, in the case of the hot air drying equipment described above, in order to efficiently dry the material to be dried while saving thermal energy, a large amount of hot air at high temperature and large air volume is used at the beginning of drying. The drying process of spraying and then automatically decreasing the temperature, air volume, and number of sprays as the drying progresses cannot be easily achieved, and a solution to this problem has been strongly desired.

In view of the above, the present invention disposes a hot air rotor directly connected to an upright drive shaft driven by an electric motor whose rotation speed can be increased or decreased approximately at the upper center of the drying chamber. A heat exchange device equipped with a burner that can increase or decrease the amount of combustion and a blower that can increase or decrease the amount of air blown is installed on the side, and the hot air outlet of the heat exchange device is connected to the hot air supply port of the hot air rotor. At the same time, the humidity sensor installed in the drying chamber is connected to an electric motor, a burner, and a blower, respectively, and the hot air is distributed and flowed from the top to the bottom inside the drying chamber by the rotating hot air rotor. Even if the product can be dried, the number of rotations of the hot air rotor and the amount of hot air at different temperatures can be automatically increased or decreased depending on the humidity condition in the drying room to match the drying conditions. In this way, an attempt has been made to provide a hot air drying device that can efficiently dry items to be dried while saving thermal energy.The configuration of the hot air drying device according to the present invention is described below. A preferred embodiment shown in the accompanying drawings will be described.

In the drawings, reference numeral 1 denotes a drying chamber whose entire shape is rectangular, cylindrical, or any other arbitrary shape, and at an upper position within the drying chamber 1 there is a motor 2 which rotates at an arbitrary speed. A drive shaft 3 that is rotated toward the center is mounted vertically.

A hot air rotor 4 is directly connected to the lower end of the drive shaft 3 which is mounted upright, and the hot air rotor 4 is forcibly rotated in one direction by the drive shaft 3. This hot air rotor 4 has a bottomed cylindrical boss tube 5 on the circumferential surface of which a hot air supply port 6 is opened, the tip of which is closed, and a hot air outlet 8 is opened along the longitudinal direction of the majority of the circumferential surface. A plurality of hollow cylindrical warm air blowing tubes 7 are installed radially at their base ends so that their insides communicate with each other.

In the present invention, the hot air outlet 8 is opened at a position where it can blow out hot air directly downward, but the hot air outlet 8 is opened at a position where the hot air outlet 8 is located at a position where the hot air outlet 8 can blow out the hot air directly downward. The position may be anywhere on the circumferential surface. Reference numeral 9 denotes an arbitrary number of warm air blowing holes opened in the bottomed portion of the boss cylinder 5.

Reference numeral 10 denotes an exhaust window opened to the lower side of the drying chamber 1. Reference numeral 11 denotes a heat exchange device for continuously supplying hot air at an appropriate temperature into the hot air rotor 4 that is forced to rotate. Outer cylinder 12 bent into a letter shape
Inside the outer cylinder 11, an inner cylinder 13, which is bent into an inverted L shape and has a substantially similar shape to the outer cylinder 12, is housed so that a heat exchange air passage 14 is formed between the cylinders 12 and 13. The base end side of the outer cylinder 12 is installed above the ventilation chamber 15 that houses the blower 16 therein, and the base end side of the outer cylinder 12 and the ventilation chamber 15 are connected in a communicating manner. At the same time, the tip side of the outer cylinder 12 is sealed,
This is the hot air supply port 6 of the hot air rotor 4 near the seal.
A downward hot air blowing window 17 is opened and communicates with the air conditioner.

On the other hand, the base end surface of the inner cylinder 13 whose inside is formed into the combustion chamber 18 is formed into an inverted conical shape and faces the front of the blower 16, so that the air blown from the blower chamber 15 is evenly distributed and the heat exchange air passage 14 is Direct the inside in the direction of the arrow to allow it to flow.

19 is a burner detachably attached to one side of the proximal end of the inner cylinder 13, and 20 is an intake window opened to one side of the ventilation chamber 15.

21 is a chimney attached to the tip side of the inner cylinder 13. Reference numeral 22 denotes a humidity sensor disposed at a suitable location within the drying chamber 1, and the humidity sensor 22 quickly detects the humidity within the drying chamber 1. The humidity sensor 22 is connected to the electric motor 2,
When the humidity inside the drying chamber 1 is high, the motor 2 and the blower 16 are connected to the burner 19 and the blower 16, respectively, so that the electric motor 2 and the blower 16 are rotated quickly, and at the same time, the amount of combustion is increased. The air flows into the rotor 4 and blows a lot of air onto the material to be dried, which has a high moisture content, to promote drying. Also, as the humidity in the drying chamber 1 decreases as the drying progresses, the electric motor 2 and blower 16 are turned on and off. At the same time as the rotation is reduced, the combustion amount of the burner is also reduced, and low-temperature, small-capacity hot air is slowly distributed and distributed by the hot air rotor 4 to dry the material to be dried while saving thermal energy.

Next, the operation of the present invention will be explained.

Now, when a material to be dried is housed in the drying chamber 1 and desired to be efficiently dried with hot air, first the electric motor 2, the blower 16, and the burner 19 are sequentially started.

By the way, at the beginning of drying, the humidity inside the drying chamber 1 is high due to the fact that the items to be dried with a high moisture content are stored.
The electric motor 2 and the blower 16 are rotated quickly by a signal from the humidity sensor 22, and at the same time the burner 19 is rotated quickly.
The amount of combustion is also adjusted to a large amount by the signal from the humidity sensor 22. As a result, in the heat exchange device 11, while a large volume of normal temperature air flows through the heat exchange air passage 14, heat is exchanged with the combustion chamber 18 which has a large combustion volume, and after generating a high temperature and large volume of warm air. , the hot air is caused to flow from the hot air blowing window 17 through the hot air supply port 6 into the hot air rotor 4 which is rapidly rotating.

After that, the hot air that has flowed in will evenly fill the plurality of hot air blow-off tubes 7, and then be directed directly downward from the respective hot air blow-off ports 8...and the large number of hot-air blow-off holes 9 in a layered manner. The air is blown while changing its position sequentially. As a result, the objects to be dried stored in the drying chamber 1 are exposed to hot air on both sides and swing from side to side, rapidly accelerating drying and at the same time, exhaust gas is automatically exhausted to the outside through the exhaust window 10.

In this way, as the drying progresses and the humidity in the drying chamber 1 gradually decreases, the rotation of the hot air rotor 4 and the blower 16 slows down based on the signal from the humidity sensor 22, and at the same time, the combustion amount of the burner 19 gradually decreases. Warm air having a temperature and air volume commensurate with the humidity in the drying chamber 1 is distributed and distributed into the drying chamber 1 by a properly rotating warm air rotor 4, and the items to be dried are successively finished dried.

Therefore, during drying work, warm air at a temperature and air volume that matches the humidity conditions in the drying chamber 1 is always sprayed onto the items to be dried by the warm air rotor 4, which rotates appropriately, so there is no loss of thermal energy. Drying can be accomplished efficiently without any problems.

In short, the present invention provides a hot air rotor 4 located approximately at the center of the drying chamber 1 and directly connected to an upright drive shaft 3 driven by an electric motor 2 whose rotation speed can be adjusted.
A heat exchange device 11 is provided on one side of the drying chamber 1, and includes a burner 19 that can increase or decrease the amount of combustion and a blower 16 that can adjust the amount of air blown. 11 hot air outlet windows 17,
The humidity sensor 22 installed in the drying chamber 1 is connected to the electric motor 2, the burner 19, and the blower 16, respectively, so that the humidity sensor 22 is connected to the electric motor 2, the burner 19, and the blower 16. When the humidity in the room 1 is high, the hot air rotor 4 rotates rapidly and blows high-temperature, large-volume hot air generated by the heat exchanger 11 onto the object to accelerate drying. At the same time, when the humidity in the drying chamber 1 decreases as the drying progresses, the hot air rotor 4 rotates appropriately to distribute and flow warm air at a temperature and air volume commensurate with the humidity of the drying chamber 1. As a result, when drying the material to be dried, the temperature, air volume, and number of blows can be automatically adjusted according to the drying conditions, resulting in significant savings in thermal energy and increased efficiency. This has the effect of making it easy to perform drying.

[Brief explanation of the drawing]

The drawings show an embodiment of the hot air drying apparatus according to the present invention, in which FIG. 1 is a longitudinal sectional front view, and FIG. 2 is a bottom view of the hot air rotor. 1...Drying room, 2...Electric motor whose rotation speed can be adjusted to increase or decrease, 3...Its drive shaft, 4...Hot air rotor, 6...Hot air supply port, 11...Heat exchange device, 16...The amount of air blown can be increased or decreased Blower, 17... Hot air outlet window of the heat exchange device, 19... Burner whose combustion amount can be increased or decreased.

Claims (1)

[Claims] 1 A hot air rotor directly connected to an upright drive shaft driven by an electric motor whose rotational speed can be increased or decreased is installed approximately at the center of the upper part of the drying chamber. A heat exchange device equipped with a burner that can be adjusted to increase or decrease and a blower that can increase or decrease the amount of air blown is installed, and the hot air outlet window of the heat exchange device is
A hot air drying device, characterized in that a humidity sensor that looks into a hot air supply port of a hot air rotor and is disposed in the drying chamber is connected to an electric motor burner and a blower, respectively.