JPS58209399A - Drum type dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a drum dryer with improved swallow efficiency.

[Technical background of the invention]

Generally, in a drum dryer, a heater is installed in the air duct that communicates completely with the air blower and the rotating drum. We are trying to supply it within the country.

[Problems with background technology]

Because the heater is located far away from the rotating drum, the hot air heated by the heater ends up heating unnecessary parts such as the shoulder walls of the air duct before reaching the rotating drum, resulting in wasted energy. There was a problem in that the effective use of heat from the heater was poor because of the heat released.

[Purpose of the invention]

The present invention provides a drum type dryer which has very little wasted heat release and is excellent in the effective utilization of heater heat.

[Summary of the invention]

The present invention is made up of a fixed plate fixed to the entire inner surface of the rear surface of the rotary dome to the outer box side, and all the heaters are attached to this fixed plate. In this way, wasteful heat emission is completely reduced, and by attaching a radioactive substance to the fixed plate heated by the heater, it emits infrared rays at a wavelength that is easily absorbed by clothing, etc., making it more efficient not only by hot air but also by radiant heat. The purpose is to enable good heating and drying.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. First, in FIG. 1, reference numeral 1 denotes an outer box, which has an entrance/exit 1at for clothing, etc. on the front thereof, and is configured to be opened and closed by a door 2 having an exit/exit 1ai and an exhaust port 2a. 3 is a nine-stroke drum with a buff lv4 i intermittently protruding from the inner circumferential surface, and large-diameter cylindrical portions 3a, 3 are provided on both the front and rear sides of this drum, respectively.
bt-opening formed, front cylindrical part 3ai entrance/exit 1 of outer box 1
&, and is fitted and supported by an annular support frame 5 via a bearing 6. 7 is a nine-branch frame fixed to the inner surface of the back plate 1b of the outer W11, 8 is a circular plate fixed to this frame 7 with screws 9, and the front part of this circular plate 8 is formed in the shape of a circular shallow container. The fixed plate 10 is completely fixed. The fixed plate 10 has a slightly bulged front surface to form a fully spherical protrusion, and a supporting ring portion 1°a is formed on the outer peripheral edge, and a rotating drum 5 is attached to this supporting ring portion 10-a. The rear cylindrical portion 3b2 is rotatably fitted and supported via a bearing 11. The rotary drum 3, whose rear part is supported by the support ring part 10a of the fixed plate 1o in this way, has a part of its inner surface, that is, its back surface, formed by the fixed plate 1o, and the protrusion-shaped front part of the fixed plate 1o. protrudes into the rotating drum 5. Reference numeral 12 denotes a motor fixed to the inner upper surface of the outer box 1, and the rotation N12a of this motor is provided with a base μ) 13'fc for transmitting rotation to the rotating dome 6, and a fan 15 of the blower 14 is attached. ing. Reference numeral 16 denotes a fan casing installed inside the above-mentioned 71 and 15t, the suction port 16ai of which is opened into the outer box 1, and the air duct 17 is extended downward from the discharge port 16b, and its opening tip is connected to the circular plate. It is connected to an inflow port 18 formed near the center of 8. Incidentally, an air intake port 20 with a hole 19 is formed at the lower front of the outer box 1. The front surface of the fixed plate 1D has a large number of ventilation holes 21 of all shapes Iiy, f, and the heater 22 is pressed and fixed by a pressing rod 23 provided between the circular plate 8 and the circular plate 8 for sensing inside the front surface. ing. Also, inside the front part of the fixed plate 10 is a thermoswitch 24 connected to the energizing path of the heater 22.
Gold is installed. 25 is a fixed plate 100 rotations rotating drum 5
A radioactive material 25 is attached to the inside, that is, the front surface, and this radioactive material 25 includes, for example, manganese dioxide, chromium oxide, iron oxide, etc.
Calcined at 00°C, composite oxide (In, Fe) (
It is made of Or, Fe ) 204 and LEA metal oxide, and exhibits high emissivity at all wavelengths, as is clear from Figure 2, which shows its spectral emissivity.

Next, the operation of the above configuration will be explained. When all washed clothes are put into the rotary drum 5 and the motor 12 and heater 22 are energized, the motor 12 rotates the rotary drums 3 and 7 ann 15, and the heater 22 generates heat to heat the fixed plate 10. do.

At the same time, due to the rotation of the fan 15, outside air is drawn into the outer box 1 from the intake port 20, and further into the fan casing 16, and the air is drawn through the air duct 17 and the inflow port 18 to the fixed plate 1.
The air is blown into the rotary drum 3, where it is heated by the heater 22 and the front surface of the fixed plate 10 which is in a heated state, and becomes hot air, which immediately flows into the rotating drum 3 through the ventilation holes 21, removes moisture from the clothes inside, and closes the door 2. It flows out from the exhaust port 2a.

The front surface of the fixed plate 10 is directly heated by the heater 22, and the heat received by the heating is radiated. in this case,
Since the radiant material 25 is attached to the front surface of the fixed plate 10, the fixed plate 10 efficiently converts the heat received by the heater 22 into radiant heat energy and releases it into the rotating drum 5. on the other hand,
As the rotating dohumm 5 rotates, the clothes touch the inner shoulder surface and move upwards, and when they reach a certain height, they fall naturally, repeating the agitation motion. Many of these clothes are distributed on the inner circumference side of the rotating drum 3, and the distribution of clothes in the center is relatively small, so that a space tends to be formed. Clothes exhibiting such a distribution are not only exposed to hot air but also exposed to the fixing plate 10 as described above.
It is also heated by the radiant heat emitted from the front, and in particular, clothing in the center of the rotating dome 3 has a relatively small distribution and the space is tight, and even clothes near the door 2 receive radiant heat. It becomes like this.

By the way, the clothing 4 is made of chemical fibers such as nylon or natural fibers such as cotton or wool. Figure 6 shows the spectral reflectance of nylon, and Figures 4 and 5 show the spectral absorbance of cotton and wool, respectively.As is clear from Figure 3, nylon has a high absorbance at wavelengths of 4 to 6μ. However, at other wavelengths, the reflectance is relatively low.

Furthermore, as is clear from FIGS. 4 and 5, cotton and wool have relatively good absorbance at wavelengths of 2 to 6 μm or more. In general, the higher the reflectance of living things, the better the absorbance and, in turn, the heat absorption, and from the above, clothing, etc.
It can be said that a relatively good heat absorption rate is exhibited at μ or more. Therefore, the items to be dried, such as clothes, absorb the radiant heat energy from the fixed plate 10 and are efficiently heated and dried.

During the drying operation as described above, clothes and the like come into contact with the protruding front surface of the fixed plate 10, which protrudes into the rotating drum 3. Therefore, when the clothes contain a lot of water, the temperature of the front surface of the fixing plate 1o does not rise much, but as the degree of dryness increases, the temperature of the front surface of the fixing plate 10 gradually increases. Then, the thermo switch 24 detects this and turns off the power to the heater 22t, and thereafter, when the temperature drops due to this cutoff, the heater 22 is energized again. Control the temperature.

Figures 6 to 8 show zirconium oxide (Zr0z).

oxidized rim (Cr2O5), oxidized ffi y (T
The spectral radiation characteristics of each of these metals (iOz) are shown below, but since these also have a relatively high emissivity at all wavelengths, these metal oxides may be used as the emissive material 25, and in short, clothing Any material that has a good emissivity at wavelengths that are easily absorbed by, ie, wavelengths of 2μ or more, is acceptable. The invention of the shrub is not limited to the embodiments described above and shown in the drawings; for example, the front surface of the fixed plate 10 may be formed in a corrugated shape to emit radiation in all directions; The thermoswitch 24 may be configured to detect the temperature of the exhaust gas from the rotating drum 5 and turn off the heater 22, and other modifications may be made without departing from the spirit of the invention.

〔Effect of the invention〕

As is clear from the above description, in the present invention, the inner surface of the rotating drum, such as the back surface, is fixed to the outer box side, and the next surface is fixed to a fixed plate, and the heater is attached to this fixed plate. The heated air can immediately flow into the rotating drum, resulting in extremely low wasteful transpiration.Moreover, the fixed plate heated by the heater contains a radioactive material with good thermal emissivity at wavelengths of 2μ or more that are easily absorbed by clothing, etc. Since it has adhered, clothes can be dried not only with hot air but also with radiant heat.
It has an excellent friend effect in that it is extremely effective in utilizing the heat of the heater and also improves drying efficiency.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the present invention, FIG. 1 is a longitudinal cross-sectional view of the whole, and FIG. 2 is a spectral radiation characteristic diagram of a radioactive substance.
Figures 3 to 5 are each made of nylon. Figures 6 to 8 are spectral reflection characteristic diagrams of cotton and wool.
The figures are diagrams of spectral radiation characteristics of different radioactive materials. In the figure, 1 is an outer box, 3 is a rotating drum, 1o is a fixed plate, 14
21 is a ventilation hole, 22 is a heater, and 25 is a radiation material. Applicant: Tokyo Shibaura Dens Co., Ltd. 7 Agent: Patent attorney Tsuyoshi Sato IL=j 1st circle PJ 2 mouth'JIi length (μm) → 6th F. 7th figure j skin length (μm) → FIG. 8 Passage (μm) 0

Claims (1)

[Scope of Claims] 1. A nine-rotation drum consisting of an outer box, a fixed plate rotatably disposed within the outer box, and having an inner surface such as a back surface fixed to the outer box side, and a nine-rotation drum formed on the fixed plate. a ventilation hole; and a blowing device that blows air into the rotating drum from the side of the stationary plate opposite to the rotating drum through the ventilation hole. A drum dryer comprising: a heater attached to the fixed plate; and a radiant material attached to the rotating drum side surface of the fixed plate and having good heat radiation at a wavelength of 2 μm or more.