JPS62194182A - Surface-shaped drier - 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) The present invention relates to a sheet dryer, and more particularly to a sheet dryer that dries wet sheet materials such as Japanese paper, leather, cloth, etc. by pasting them on a sheet heat dissipating surface.

(Spine technology) Conventionally, as a dryer for drying Japanese paper, etc., a dryer having the configuration shown in FIGS. 9 and 10 has generally been used. In other words, this dryer is provided with a heat radiating part 12f'F on the base 10, the outer surface of which is covered and whose longitudinal section is approximately A-shaped and which serves as a heat radiating surface 12a for drying the dried material 11. The inside of the heat dissipation section 12 has a tank structure into which water W is injected, and into the lower space section 1211! A burner 13 using fi oil as fuel was provided. In addition, 12c is the heat dissipation part 12
It communicates with the inside of the tank through a steam handler installed at the top of the tank, and when the pressure inside the tank exceeds a predetermined value, the steam pressure is released to the outside via this steam vent 12c.

Therefore, in use, water W is put into the tank, and the heat radiating part 12 is heated from the outside with a burner 13 to raise the temperature of the water W inside to a predetermined temperature and heat the heat radiating surface 12a. 13 is extinguished, and when the dried material 11 attached to the heat radiation surface 12a dries, the dried material 11 is peeled off, a new dried material 11 is affixed, and the old burner 1:3
The task of igniting the fire was repeated.

However, in the dryer with the above configuration, (a)
The temperature of the heat radiation surface 12a of this dryer is preferably in the range of about 130 to 90 degrees Celsius in consideration of the material to be dried 11, but the temperature will drop slightly before the burner 13 is ignited again, and the temperature will be increased by that amount. In order to do so, it was difficult to raise the temperature and IJ because the workers were completely dependent on the workers.

(b) The combustion consumption of the burner 13, which uses heavy oil as fuel, is difficult to control.

(c) It is necessary to take safety measures for the burner 13 and its fuel tank to avoid the risk of fire, and since the fuel is heavy oil, there are problems with safety and cleanliness due to the occurrence of odor. .

(d) Since the water in the tank is heated, it takes time to heat a large volume of water and the temperature rise speed is slow.

There were other drawbacks.

(Object of the Invention) The present invention has been proposed in view of the above points, and its purpose is to integrate the heat radiating part and the heat source, and to use a heater or the like as the heating element constituting the heat source. It is an object of the present invention to provide a surface dryer which is particularly suitable for drying materials to be dried such as sheet materials such as Japanese paper, leather, and cloth by eliminating the drawbacks of the above.

(Disclosure of the Invention) A first embodiment of the present invention will be described below with reference to the drawings of FIGS. 1 to 3.

Fig. 1 is a partially cut away heat dissipation part used in the present invention, and Fig. 2 is a full T* perspective view of the same as above. A container 2 made of rolled steel plate material, and an I! ! It is equipped with a pipe-shaped heating means 3 and a working fluid made of a heat medium 4 such as water or fluorocarbon, which is injected into the bottom of the container 2, and has a type of flat heat pipe structure. The heat radiation section 1 and the heat source for drying the material to be dried are integrated, and in this embodiment, a sheathed heater 1 is used as a heating element constituting the heating means.

Specifically, as shown in FIG.
fl'jlfiAI: When heated by electricity, the heating medium 4 is vaporized and becomes vapor, and the generated vapor moves to the upper part at high speed as shown by the arrow, condenses and liquefies, and this condensed liquid flows into the heat dissipation section 2. The heat is moved downward by gravity along the inner part of the heat dissipation surface 2a and is returned to the heating means 3, thus repeating the heat transport cycle.

Therefore, the planar outer surface of the container 2 is used as a heat dissipation surface 2. Since heat output can be taken out as I, the material to be dried 5 such as Japanese paper may be attached to the heat dissipation surface 2a and dried. At this time, the temperature of the heat radiation surface 2a has a uniform temperature distribution. This is because when the temperature locally rises to 10F, more steam condenses in that area and acts to keep the temperature constant.

In order to control the temperature of the heat dissipation surface 2a, a group of sensors for detecting the temperature of the heat dissipation surface 2a is provided at, for example, approximately the center of the surface opposite to the heat dissipation surface 2a.
It can be configured to control the temperature of a.

The object to be dried 5 containing moisture is attached to the heat radiation surface 2a and dehydrated and dried by the heat radiation cycle of the heat pipe, and its electrical temperature control method uses a triac to prevent sudden temperature drop. It is preferable to use control.

4th V! U shows a second embodiment of the present invention, in which a pair of heat radiating parts 1.1 are surrounded by a heat insulating material 7 except for the heat radiating surface 2a,
They are arranged in a yaw root shape via a movable frame 9 having casters 8, and each heat radiating surface 2a is inclined, and the material to be dried 5 may be attached to these heat radiating surfaces 2a as appropriate. . In addition, in the figure (1NLt temperature controller, which is connected to the output end of the hot water temperature sensor group and operates according to the temperature detected by temperature sensor 1+1 to control the energization of commercial power AC to the sheathed heater 1), The heat dissipation surface 2a is set to a desired temperature.

Figure 5 shows the electrical configuration of the commercial type)
AG 200V breaker old and power switch 81
After that, the series circuit of triac IRIAc and sheathed heater H is connected, and triac 11AC1
The firing angle is controlled by the jW degree controller C (IN) according to the temperature of the heat radiation surface 2a.

FIG. 6 is a circuit configuration diagram showing FIG. 5 more specifically, and the same parts as in FIG. 6 are given the same reference numerals. In addition,
The commercial W1''a side is indicated by 80 including the breaker.

1() is an integrated circuit for triac control, which compares the signal voltages input to terminals 3 and 4, and sends an ignition signal to the triac [old AC] from terminal 6 according to the comparison result. In addition, terminal 8 is an input terminal for detecting the zero cross timing of the commercial T4511Ac, and a capacitor connected to both ends of the series circuit of the commercial AT; and the power switch SW. (A signal is applied via a phase shift circuit including /3+resistance RIs. Note that terminal 7.5 is a power supply terminal.

On the other hand, capacitor)) C1, resistor R14 + diode D2
The series circuit is for creating the direct current *a necessary for the operation of the electronic circuit section, and is connected to both ends of the series circuit of the commercial type IQAC and power switch SW, and is connected to the diode D2.
By rectifying the voltage with the resistor R14, smoothing it with the capacitor CI, a low DC voltage is applied across the capacitor CI. A power supply terminal 7.5 of the integrated circuit IC is connected to both ends of the capacitor C+, and a resistor F<3.5 for generating a temperature signal is connected to both ends of the capacitor C+. Temperature sensor 11 (
, resistance 1,.

A series circuit of a diode D+ is connected, and a connection point between the temperature sensor group and resistors R and D is connected to an integrated circuit IC through a resistor R;
is connected to terminal 4 of the Note that both ends of the variable resistor VR are connected to a resistor Rs, and a flooding sensor 111. The movable terminal of the variable resistor Vl+ is connected in parallel with the series circuit of the resistor R1.
1 through sensor 111. It is connected to the connection point of the resistor) (Y), and the set temperature can be adjusted by changing the level of the temperature signal.

On the other hand, programmable unijunction transistor Q3. Transistor Q2. Capacitor C2゜Resistance R1~
RII constitutes an oscillation circuit, and resistors Rs, R
The oscillation signal appearing at the connection point A is applied to a terminal 3 of the integrated circuit 1 via a resistor RII. In addition, the transistor Q1 supplies power to the above oscillation circuit 1, and its base is connected to the resistor R.
s and the temperature sensor TH, and is configured to start and stop oscillation at a predetermined temperature. In addition, the series circuit of capacitors C, , M anti-RI4 is a triac ■ surge absorption circuit to absorb the surge of C, 2Nl is a surge absorber that absorbs the surge of commercial 'IIt'' jlAc, and Ne is for operation display. It's a neon tube.

In operation, the resistance Ra is increased by the oscillation of the programmable unijunction transistor Q3.

A sawtooth wave signal appears at the connection point of R7, and is input to terminal 3 of the integrated circuit C. On the other hand, integrated circuit 1 (
Terminal 4 of ] has a signal depending on temperature change )D and a variable resistor V
A signal multiplied by the signal set by l+ is input. Then, in the integrated circuit IC, the signals inputted to the terminals 3 and 4 are compared, and when the two signals match, the triac 1 and 8G are fired. Therefore, when the temperature of the heat dissipation surface changes, the point at which both signals match, that is, the ignition phase, changes. When the temperature is low, the ignition phase advances, and conversely, when the temperature is high, the ignition phase is delayed, and the sheathed heater The temperature of the heat dissipation surface is kept constant by controlling the power supplied to I''.

7 and 8 show a third embodiment of the invention. If the container is completely sealed, the internal pressure of the container 2 will become large if a heating medium 4 such as Freon is used during heating, so the container must withstand it #i! The pressure-resistant structure of the container 2 must be made of I-shaped construction, which results in the problem that the pressure-resistant structure of the container 2 is expensive and expensive. Therefore, this embodiment is characterized in that by configuring the container 2 so that a portion of the steam inside it escapes to the outside, the container structure is simplified and the cost increase is prevented.

That is, the upper part of the container 2 has an inner chamber and a j! A tubular steam vent pipe 28 is connected therethrough. This steam release vibe 2A has its branch vibes 2A to 2A3 connected at three locations, for example, at both ends and the center of the upper surface of the container, and is assembled into a single tube at the center, and at the back side of the container 2. A heat medium water inlet 211. which extends downward, and whose lower end is, for example, in the shape of a cylinder with a bottom, is located at the upper frontage of the condensate reservoir 2B. It has been temporarily installed. And this condensate reservoir part 2
A vibe P is provided at the bottom of the container B, and this vibe P+ is connected to a vibe P2 provided at the bottom of the container 2, and below the connection part of this vibe P2, water is drained when exchanging the heat medium. The structure includes a drain pal pro R for this purpose. Since the other configurations are substantially the same as those of the first embodiment, similar parts will be referred to with the same terms and detailed explanations will be omitted.

The heat 14 is then heated and vaporized by the sheathed heater 1-1 to become steam, which moves to the upper part at high speed and condenses into a liquid, but in this case, the pressure inside the container 2 increases. Therefore, a part of the steam is discharged via the steam venting vibe 2A to the condensed liquid storage section 2B, which stores the condensed and liquefied heating medium, so that the pressure inside the container 2 does not increase more than necessary. Therefore, the container 2 does not need to have a pressure-resistant structure.

In addition, this condensate reservoir 2
It communicates with the lower part of the container 2 via the vibrator P+ and P2, and there is a condensate reservoir 28111 in the container 2.
MII is configured so that the heat medium 4 of 1 can be circulated. Note that the drain valve 1111 is used when exchanging the heat medium 4,
By operating this drain valve 1111, the container 2
And/or the heating medium in the condensed III liquid reservoir 21'l can be drained to the outside.

In addition, although the case where the sheathed heater H was used as the heating element constituting the heating means in each of the above embodiments was explained, it is of course possible to raise the temperature of the heat dissipation section 2 by flowing hot water into the vibrator. be.

(Effects of the Invention) As described above, according to the present invention, in a dryer for drying Japanese paper, a container Bζ in which the Japanese paper has a heat radiating part attached to a planar heat radiating surface, and Since the heating medium is configured to include a heat medium and a heating means that vaporizes and condenses the heat medium to raise the temperature of the heat radiating section, the heat radiating surface of the heat radiating section to which the Japanese paper is pasted can be uniformly heated. This method has the advantage of improving workability without allowing the washi paper to dry out in places that are too dry, as well as being able to quickly raise the temperature of the heat dissipating surface.

In addition, since the heat dissipation part and the heat source are integrated, compared to the conventional type that burns heavy oil through a burner, it does not take up much space and is superior in safety.

[Brief explanation of drawings]

No. ′! Figures 3 to 3 show a first embodiment of the present invention, where Figure 1 is a partially cutaway perspective view of a heat dissipation section used in the present invention, Figure 2 is an overall perspective view of the same as the above, and Figure 3 is the same as the above. Operation explanatory diagram, 4th
The figure is a perspective view of the second embodiment of the present invention, FIG. FIG. 9 is a perspective view and a side cross-sectional explanatory view of a third embodiment of the present invention, FIG. 9 is a conventional example, and FIG. 10 is a longitudinal cross-sectional view thereof.

Claims (4)

[Claims] (1) A dryer for drying Japanese paper, which includes a container having a heat radiating part on which the Japanese paper is attached to a planar heat radiating surface, a heating medium provided in the container, and a heating medium. a heating means for vaporizing and condensing the heat radiating section to raise the temperature of the heat radiating section, and integrating the heat radiating section and the heat source. (2) The surface dryer according to claim 1, wherein the heating means comprises an electric heater or hot water, and the heat source comprises water, chlorofluorocarbon, or the like. (3) The sheet dryer according to claim 1, wherein a temperature sensor is arranged in the heat radiation part to control the drying temperature of Japanese paper. (4) The flat dryer according to claim 1, wherein the container is provided with a steam vent pipe.