JPS5925135B2 - Hot air dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, the hot air blown out from the hot air rotor is accurately distributed downward in the drying chamber with an even layer, and the warm air distributed downward in the drying chamber is Without the need for a drive device, the hot air is forced to exhaust air from the bottom of the drying chamber through a separate exhaust path without mixing with the hot air that flows downward due to the rotation effect of the hot air rotor's reaction rotation, efficiently drying the items to be dried. The present invention relates to a hot air drying device that can be used for drying.

Conventionally, a hot air drying device rotates a hot air rotor by the reaction of blowing hot air and dries the material to be dried with the hot air blown out, and the hot air is forced into the drying room by rotating a downward blower. The hot air is circulated downward, and the heated air is forced to the outside through a vertical exhaust pipe installed at the top of the drying chamber by an upward exhaust device that rotates forcibly. All air drying devices were manufactured before the application was filed, for example, in 1973.
It is publicly known and is described in Japanese Utility Model Publication No.-9254 and Japanese Utility Model Publication No. 41-3595, respectively.

By the way, in conventional drying apparatuses of this kind, when drying the material to be dried, no consideration has been given to exhaust air in the former case, and even in the latter case, the hot air used for drying Since the same drying chamber is used to supply and exhaust the air after the drying process, the blown hot air is reversed and raised before it reaches the bottom of the drying chamber.
As a result, hot air cannot be accurately distributed in an evenly distributed state, and at the same time, the drying phenomenon occurs where only the upper part of the material to be dried is dried and the lower part is not. do.

Not only that, but the latter drying device requires a separate electric motor to distribute the hot air downward and exhaust it, which of course requires a lot of electricity for the drying process. The drying device itself also had the disadvantage of being expensive.

Therefore, in order to solve the drawbacks of the above-mentioned known hot air drying devices, the present invention aims to prevent the hot air blown downward from drying the material to be dried into the drying chamber, and the exhaust air after drying to be carried out. Exhaust air is circulated around the drying chamber through an exhaust passage provided from the lower part to the upper part, and the material to be dried is dried properly without causing uneven drying. The purpose of the present invention is to provide a drying device with high drying efficiency by forcing the hot air rotor to rotate only by the rotation of the hot air rotor.

In view of the above, and in order to achieve the above object, the present invention has a structure such that an inner wall tube is disposed inside the drying chamber on the inner peripheral surface side and the upper surface side of the drying chamber, and the lower end is connected to the bottom of the drying chamber through an exhaust port. Further, the hot air drying device has an upper end forming an exhaust path communicating with an exhaust wall disposed outside the upper part of the drying chamber, and an exhaust vane that rotates in conjunction with a hot air rotor in the exhaust chamber, According to this hot air drying device, the hot air for drying the material to be dried is always distributed downward in the drying chamber in a uniform distribution state, and the exhaust air after being used for drying is sent from the bottom of the drying chamber to the bottom of the drying chamber. Forced exhaust air is forced to the outside through an exhaust path separated from the air, and the material to be dried is brought into even contact with the hot air, allowing for efficient drying without uneven drying. The action is performed by the rotating exhaust vanes using the rotational action of the hot air rotor without using any drive device, which not only saves power consumption but also simplifies the device configuration and makes it cheaper. At the same time, the amount of hot air supplied and the amount of exhaust air are made proportional, thereby achieving the effect of further promoting drying.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the hot air drying apparatus according to the present invention will be described below as shown in the accompanying drawings.

In the drawings, reference numeral 1 denotes a drying chamber whose circumferential and upper and lower surfaces are surrounded by an outer wall 2. On the inner circumferential and upper surfaces of the drying chamber 1, an inner wall cylinder 3 is connected to an exhaust passage 5 by a plurality of supporting members 4.
An exhaust port 6 communicating with the bottom of the drying chamber 1 is opened at the bottom of the exhaust passage 5.

Further, in the upper center of the drying chamber 1, there is provided a warm air rotor 7 that rotates by the reaction of hot air being blown out.

That is, 8 is its rotating shaft, and a hollow cylindrical warm air blowing tube 9 with both ends closed is radially attached to the lower end of the rotating shaft 8. Hot air outlets 10 facing oppositely to each other across the shaft 8 and facing diagonally downward;
10 are opened along the longitudinal direction.

11, 11 are the fume guide plates.

Reference numeral 12 denotes a hot air introduction passage that supplies hot air from a hot air generation source (not shown), and the end side of the hot air introduction passage 12 is connected to the hot air blowing tube 9 at the center of the hot air rotor 7. has been done.

Reference numeral 13 denotes an exhaust chamber disposed above the drying chamber 1, and the exhaust chamber 13 is connected to the exhaust path 5.
An exhaust port 14 that communicates with the outside air is opened in the opening.

A rotating shaft 8 of the warm air rotor 7 passes through the exhaust chamber 13, and an exhaust vane 15 is attached to the rotating shaft 8.

16 is a drain port for condensing water droplets.

Note that the exhaust vanes 15 may not be directly attached to the rotating shaft 8 of the hot air rotor 7, but may be attached to another rotating shaft, and an accelerator may be interposed between the exhaust vanes 15 and the rotating shaft 8. (not shown).

Next, its effect will be explained.

Now, when drying clothes and other items to be dried,
The material to be dried is stored in a drying chamber 1 on a hanging rack or other well-ventilated condition.

When hot air is supplied from the hot air generation source to the hot air introduction path 12, the hot air flows from the hot air introduction path 12 into the hot air blowing tube 9 of the hot air rotor 7, and the hot air blowing ports 10, 10 of the hot air blowing tube 9 of the hot air rotor 7 are heated. Since the air is blown diagonally downward into the drying chamber 1, it rotates due to the reaction of the blown air.

Therefore, the warm air is constantly stirred within the drying chamber 1 and blown downward while changing its position sequentially, so that the warm air is uniformly distributed downward throughout the entire drying chamber 1.

As mentioned above, when the hot air rotor 7 rotates, the exhaust vanes 15 attached to the rotating shaft 8 also rotate, so the intake action of the exhaust vanes 15 causes air to be blown downward inside the drying chamber 1. The air is drawn into the exhaust passage 5 through the exhaust port 14 and then forcibly exhausted to the outside from the exhaust chamber 13.

Since the warm air rotor 7 and the exhaust vanes 15 are linked, if the hot air supply amount is increased, the hot air rotor 7 will be accelerated and the exhaust vanes 15 will also be accelerated. If it is reduced, both the hot air rotor 7 and the exhaust vane 15 are decelerated.

Therefore, the amount of hot air supplied and the amount of exhaust air are always kept in a proportional relationship, and the flow rate of hot air in the drying chamber 1 is always maintained in an appropriate state.

Therefore, in combination with the uniform distribution and distribution of hot air as described above, it is possible to eliminate uneven drying of the material to be dried, and to significantly improve drying efficiency.

Note that in the case where an accelerator is interposed between the hot air rotor 7 and the exhaust vanes 15, the exhaust vanes 15 can be maintained at the required rotation speed regardless of the rotation speed of the hot air rotor 7. , the relationship between the supply amount of hot air and the exhaust amount can be made more appropriate.

[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, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. -B is an enlarged sectional view. DESCRIPTION OF SYMBOLS 1... Drying room, 5... Exhaust path, 7... Warm air rotor, 12... Hot air introduction path, 13... Exhaust chamber, 15...
・Exhaust vane.

Claims (1)

[Claims] 1 A hot air rotor that rotates by the reaction of blowing hot air is provided in the drying chamber, and a hot air introduction path that supplies hot air from a hot air generation source is connected to the hot air rotor, in which the drying chamber is On the inner circumferential surface side and the upper surface side, an exhaust path is formed by an inner wall tube arranged inside the drying chamber, with the lower end communicating with the bottom of the drying chamber through the exhaust port, and the upper end communicating with the exhaust chamber arranged outside and above the drying chamber. The hot air drying device is further characterized in that the exhaust chamber is provided with an exhaust vane that rotates in conjunction with the hot air rotor.