JPS605870B2 - Outside air diffusion introduction device in reduced pressure equilibrium heating drying equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an outside air diffusion introduction device in a reduced pressure equilibrium heating drying apparatus.

This type of reduced pressure equilibrium heating drying apparatus was invented by the present applicant, for example, in Japanese Patent Application No. 55-178719 (Japanese Patent No. 11911).
No. 29), Japanese Patent Application No. 1220-24216 (Patent No. 1220)
No. 327), Tokuiso Sho No. 56-25402 (Patent No. 122)
This invention is based on the invention related to a heat source such as No. 0328) and is applied to a drying device, and is characterized by not using any conventionally known electric heaters or fuel.

This invention uses a depressurizing action that forcibly sucks and exhausts the air in a sealed hollow chamber through the rotation of a rotating body, and a heating action that uses frictional heat generated by the friction between the air and the rotating body to dry the material. Diffusion of outside air in which outside air is introduced intermittently in a vacuum-balanced heating drying device designed to perform heating drying, and outside air is sufficiently diffused into a hollow chamber to be effectively introduced, thereby improving moisture extraction and drying effects. To provide introduction equipment.

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a closed hollow chamber in the shape of an oblong rectangular parallelepiped that can be opened and closed by attaching a door 2, and heat insulation materials 3 are pivotally interposed on the upper, lower, left, and right outer peripheral walls to keep the room warm.

Reference numeral 4 indicates a suction port of a reduced pressure frictional heat generation mechanism x having a rotatable rotating body a provided at the center of one side of the hollow chamber 1.

In the illustration, the rotating body a is a rotary blade 6 of a propeller fan, sirocco fan, etc., which is rotated by an electric motor 5.
It is composed of. The rotating direction is determined so as to have a desired inclination angle and to suck and exhaust the air in the hollow chamber 1. A frictional heat generating portion A is formed in the rotating region of the rotating body a, which generates heat due to frictional action with air. 7
is a rotating body disposed opposite to the rotating body a of the decompression frictional heat generating mechanism X with a slight interval, and constitutes a driven rotation mechanism Y that rotates drivenly by the viscous effect of gas based on the rotational action of the rotating body a. ing.

Basically, this driven rotation mechanism Y may be constructed by providing the rotating body 7 with pitch blades which are disposed on the support frame 9 and can suck side airflow toward the front. The above-mentioned driven rotation mechanism Y
As shown in the figure, the rotating body 7 has a blade wheel structure (rotor wheel), and the suction blades 8 that rotate integrally with this are coaxial.
It can be formed as a two-stage rotating structure. That is,
Close to the suction port 4, attach a temporary and fixed orthogonal support frame 9, and align the center of the frame 9 with the center of the rotary body a to form a bearing part 10, to the left of this bearing part 10. The rotary impeller 7 and the rotary blade 8 on the right side are hingedly fixed to the shaft punch 11 so that they can rotate together.

The rotary impeller 7 is composed of a ring 12 slightly smaller than the diameter of the suction port 4 and a large number of blades 13 protruding from the outer circumference of the ring 12.
A large number of air chambers 14 surrounded by the blades 13 can be formed. Reference numeral 15 denotes a bent portion in which the upper end of the blade 13 is bent obliquely from top to bottom, and is configured to improve rotational performance.

Reference numeral 16 indicates four supporting punches that support the center mounting portion 17, and reference numeral 18 indicates a suction blade installed on the inside of the ring 12, which are installed so as to maintain the inclination angle in the same direction so as to suck the airflow from the right side. .

Furthermore, the rotary blades 8 may have a normal fan structure, as long as the blades 8 rotate in a direction that sucks the air inside the hollow chamber 1 to the left.

Additionally, a sloped plate 19 in the shape of a shade having an annular portion 19a capable of supporting both ends of the support frame 9 is fixed to the outside of the rotary blade 8, and this slanted plate 19 is fixed to the outside of the rotary blade 8. There is. Although not shown, this inclined plate 19 is rotatably fixed to the shaft punch 11 in the same way as the rotating blade 8, and this inclined plate 1
It is also possible to attach an inclined blade exhibiting a fan function to the right side of the fan 9 to dramatically restrict the suction effect and the suction area in the same manner as described above.

Furthermore, in the embodiment, in order to improve the uniform temperature distribution by making the airflow phenomenon in the hollow chamber 1 effective, a conical guide plate 20 which is expanded to the right from the suction port 4 is provided protruding from the suction port 4 together with the inclined plate 19. , and a forced swirling convection guide mechanism Z in which a regulating plate 21 that regulates the flow direction of the swirling flow obtained between the inclined plate 19 and the inclined plate 19 is provided. Reference numeral 22 denotes an outside air introduction pipe of the outside air introduction mechanism B, which has one end connected and fixed to another side wall opposite to the side wall to which the decompression frictional heat generation mechanism x of the hollow chamber 1 is attached, and is equipped with an on-off valve 23.

Reference numeral 24 denotes a diffusion plate provided close to the mounting side of the outside air introduction pipe 22, and a large number of small holes 25 are bored throughout the entire area of the diffusion plate 24.

Reference numeral 26 denotes an outside air introduction chamber partitioned by a diffusion plate 24, which can receive outside air flowing in from the outside air introduction pipe 22.

The opening/closing valve 23 can be operated not only manually, but also automatically in relation to the temperature or time within the hollow chamber 1. Further, 27 is a support tube for the electric motor 5, and has an exhaust passage 28, and this exhaust passage 28 is provided with an opening/closing lid as necessary to prevent the heat inside the hollow chamber 1 from dissipating. There is also.

Reference numeral 29 denotes a cooling fan for the electric motor 5, which is fixed to the rotating shaft of the electric motor 5 to prevent the electric motor 5 from overheating.

Reference numeral 30 indicates a layer board such as a shelf or board arranged in multiple stages in the hollow chamber 1, and can take various shapes and structures depending on the type and size of the material to be dried.

The operation of this invention will be explained based on the above configuration.

First, if the electric motor 5 is energized and the rotary blade 6 is rotated,
When the decompression friction heat generation mechanism When this is reached, an approximately equilibrium state is maintained.

The pressure difference between the inside and outside of the hollow chamber 1 in this approximately constant equilibrium state is determined by the magnitude of the rotational suction force of the rotary blade 6 and the size of the gap between the suction port 4 and the rotary blade 6. This is maintained as long as the rotational action of the blade 6 continues. In this equilibrium state, a phenomenon of air stagnation occurs in the frictional heat generating part A within the rotation area of the rotating blade 6, and the frictional action with the rotating blade 6 continues to be repeated, so frictional heat is generated and the temperature gradually rises. do.

By the way, a sub-rotation mechanism Y is provided opposite to the decompression frictional heat generating mechanism The rotating body 7 of this driven rotation mechanism Y is rotated in the same direction.

The driven rotation mechanism Y exclusively performs the exhaust action until the air in the hollow chamber 1 is exhausted and a desired reduced pressure state is reached, that is, the pressure difference between the inside and outside of the hollow chamber 1 reaches a substantially constant equilibrium state. After reaching this constant reduced pressure state, the air chamber 14 is surrounded by the ring 12 of the rotary impeller 7, the blades 13, and the inner wall of the suction port 4, which is driven by the rotation of the rotating body a. The gas inside is forced to swirl and rotate.

The heated airflow in the air chamber 14 subjected to this forced swirling action is transferred to the guide plate 20 and the inclined plate 1 by the forced swirling convection guide mechanism Z.
The swirling flow is introduced into the space formed by the regulating plate 21 and is further discharged toward the outer peripheral inner wall of the hollow chamber 1.

On the other hand, in the driven rotation mechanism Y, the airflow located to the right of the rotary vane 8 is forcibly sucked to the left by the action of the rotary vane 8 which rotates integrally with the rotation of the rotary impeller 7, and the airflow is forcibly sucked to the left by the suction vane 18 of the ring 12. In exchange for the suction effect, the air is forcibly sent to the friction heat generation part A of the rotary vane 6 of the decompression friction heat generation mechanism x, where it is replaced with the airflow that has already risen and is generated by the rotary impeller 7 as described above. It is discharged forming a swirling flow to the right. Therefore, due to the functions of the bottom rotation mechanism Y and the forced swirling convection guide mechanism Z, the airflow in the hollow chamber 1 is forced to move from the outer circumference to the right and from the center to the left. Action (also recognized as spiral action)
can be played.

In this manner, when the air pressure inside the hollow chamber 1 is under the pressure reducing effect due to the rotation of the rotary vane 6, the swirling airflow is sent from the outer circumferential direction to the right, and after once moving to the right, it is moved from the right outer circumference of the hollow chamber 1 to the center. Since the convection effect of the airflow moving toward the chamber 1 is forcibly generated, the temperature inside the chamber 1 can be uniformized rapidly to a desired set temperature. In addition, the convecting and overflowing airflow uniformly enters and acts on the battle laminates 30 arranged in multiple stages, so that the whole can be heated under reduced pressure. By the way, when the material to be dried is housed, some of the vaporized moisture is discharged to the outside through the suction port 4, but if outside air is introduced using the outside air introduction mechanism B, the outside air will flow into the outside air introduction chamber of the hollow chamber 1. Sent within 26 days,
The air that diffuses into the hollow chamber 1 through the large number of holes 25 of the diffuser plate 24 and instantly contains vaporized moisture corresponding to the supplied air is exhausted from the suction port 4 for effective moisture extraction. That is, a drying effect is performed. Therefore, the material to be dried on the laminated plate 30 in the hollow chamber 1 can undergo a rapid drying action due to the release of moisture.

In addition, if drying is insufficient with one action of introducing outside air, the opening/closing valve 23 is temporarily closed and heating is performed again while maintaining a reduced pressure equilibrium state, thereby heating the material to be dried again and promoting drying.
Similar effects can be achieved by activating the outside air introduction mechanism B after a desired period of time.

If the outside air introduction mechanism B is operated intermittently in this way,
The drying effect of the material to be dried, which is placed in a reduced pressure equilibrium state, can be accelerated in an extremely short period of time. Furthermore, although the hollow chamber 1 is shown in the shape of a horizontal rectangular parallelepiped, this shape is not specified in any way, and it goes without saying that the hollow chamber 1 may be turned vertically by 90 degrees to have a cylindrical structure.

In the case of a horizontal rectangular parallelepiped shape as shown in the figure, curved surfaces may be formed at the four corners of the four circumferences to gradually reduce the flow resistance of the swirling laminar flow. Although one embodiment of the present invention has been described above, the driven rotation mechanism Y and the forced swirl flow guide mechanism Z may be omitted except for the reduced pressure frictional heat generation mechanism X. As described above, this invention suctions and exhausts the air in a sealed hollow chamber by the rotational action of a rotating body, maintains the hollow chamber in a reduced pressure state, and maintains the pressure difference between the inside and outside in a substantially constant equilibrium state. By continuing the rotating action of the rotating body and generating frictional heat by the frictional action between the rotating body and the air, the material to be dried in the hollow chamber 1 can be heated and dried at a desired temperature, and the opening/closing valve of the outside air introduction mechanism can be operated manually or automatically. By opening, the outside air enters the outside air introduction chamber, and once the rapid inflow of air into the hollow chamber is blocked by the diffusion plate, the air is uniformly distributed from the entire area of the diffusion plate through the many holes, and the nozzle action is applied. As a result, vaporized moisture is removed from the suction port by the amount of air that diffuses into the hollow space.

In addition, the diffused air promotes free vaporization of the moisture contained in the material to be dried, so that a rapid drying effect can be achieved. In particular, by repeating the outside air introduction action by the outside air introduction mechanism at desired intervals, a more efficient drying action can be performed.

Therefore, according to the present invention, various materials to be dried can be dried while maintaining high quality.

Further, according to the present invention, the use of a direct heat source such as a heater or fuel as in the past is omitted, and the heat is generated by the rotational friction effect of a rotating body, the depressurizing effect, or, if necessary, the convection effect by a swirling swirl. It has the characteristics of being able to perform a uniform and effective heating action and effectively performing all kinds of drying actions.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing an embodiment of the outside air diffusion introduction device in the reduced pressure equilibrium heating device according to the present invention;
The figure is an enlarged sectional view of the main part of the same as above, and Figures 3 and 4 are m of the same as above.
-m line and WN line sectional view. 1... Sealed hollow chamber, 4... Suction port of reduced pressure friction heat generation mechanism x, 7... Driven rotation mechanism Y
Rotating body, 8... Rotating blade, 24... Diffusion plate with small holes 25, 26... Outside air introduction chamber, a...
. . . indicates a rotating body and is composed of an electric motor 5 and a rotary blade 6, A . . . Frictional heat generating section, B . . . Outside air introduction mechanism. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 The air in the sealed hollow chamber is forcibly sucked in by the rotating action of the rotary body of the decompression friction heat generation mechanism and exhausted to the outside, reducing the pressure in the room and keeping the pressure difference between the inside and outside in a substantially constant equilibrium state. In the reduced pressure equilibrium heat generating device, which is capable of generating frictional heat by continuing the rotating action of the rotating body and promoting frictional action with the air while maintaining this equilibrium state, an on-off valve is provided on one side of the hollow chamber. An outside air introduction mechanism with
In addition, a diffusion plate with a large number of small holes is installed on the installation side of the outside air introduction mechanism through the outside air introduction chamber, and the opening/closing valve is opened depending on the temperature or time in the hollow chamber, and is controlled automatically or manually. What is claimed is: 1. A device for diffusing and introducing outside air in a reduced pressure equilibrium heating drying device.