JPS5952342B2 - Reduced pressure equilibrium heating method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of increasing the temperature inside a sealed hollow chamber by the frictional heat obtained by promoting friction with the air while keeping the chamber in a reduced pressure state through the rotational action of a rotating body. The present invention relates to a reduced pressure equilibrium heating method.

The present invention also relates to a reduced-pressure equilibrium heating method in which an object to be dried in a sealed hollow chamber can be effectively dried by a synergistic effect of a reducing pressure action based on the rotational action of a rotating body and a heating action.

Conventionally, methods for heating the inside of a hollow chamber have always required a heat source, such as by supplying hot air or using a heater.

In particular, the hollow chamber containing the material to be dried requires a blower pump to blow air and a heat source such as petroleum gas or a heater to obtain the necessary heated air.

Therefore, heating means for the purpose of drying must require a heat source to obtain thermal energy in addition to the energy for blowing air, so that effective energy use is not made, and energy waste is inevitable. There was an inconvenience.

This invention was made by paying attention to the points mentioned above, and the energy for blowing air can be transferred to a rotating body without using a special heat source to obtain thermal energy for a sealed hollow chamber. By converting the suction depressurization action based on the rotational action and the frictional heat generation action between the rotating body and the air when the depressurization is balanced, energy can be used effectively without waste, and a highly efficient heating drying effect can be achieved. An object of the present invention is to provide a reduced pressure equilibrium heating method.

Furthermore, in addition to the suction depressurization effect and frictional heat generation effect by the rotating body described above, this invention also works on the air intake effect of outside air to improve the removal of vaporized components and the promotion of the drying effect. An object of the present invention is to provide a reduced pressure equilibrium heating method.

Another object of the present invention is to provide a reduced pressure equilibrium heating method in which the hollow chamber itself is used as a heat source by filling the hollow chamber with the thermal energy obtained by the exothermic action.

An embodiment of the reduced pressure equilibrium heating method according to the present invention will be described below based on an apparatus shown in the drawings.

First, the structure of each figure will be described along with the symbols.

Reference numeral 1 denotes a rectangular cylindrical sealed hollow chamber with doors 2, 2 pivotally connected to form a double-opening structure, and heat insulating material 3 is interposed on the upper, lower, left and right outer peripheral walls to keep the room warm.

4 is a suction port opened in the center of the ceiling of hollow chamber 1, and
is arranged so that it can rotate freely.

In the illustration, the rotating body a is constituted by rotating blades 6 such as a propeller fan or a sirocco fan rotated by an electric motor 5, has a desired inclination angle, and sucks air in the hollow chamber 1. The direction of rotation is determined to exhaust air.

A frictional heat generating portion A is formed in the rotating region of the rotating body a.

Reference numeral 7 denotes an outside air supply pipe with one end 7a opened at the bottom of the hollow chamber 1. In FIG. one end of which faces the lower part of hollow chamber 1, or the second
In this figure and FIG. 3, since there are no supporting legs, the entire structure is placed in the hollow chamber 1, with the other end 7b of the outside air supply pipe 7 facing the lower front surface of the hollow chamber 1.

Preferably, a dust removal filter 9 is removably provided in the outside air supply pipe 7.

10 is a control valve of the outside air supply pipe 7, and the eldest child 10a
This makes it possible to freely adjust the flow rate of outside air passing through the inside of the outside air supply pipe 7.

Although not shown, this control valve 10 is used as a general automatic control valve that can variably adjust the operating pressure conditions depending on the temperature inside the hollow chamber 1, the pressure difference between the inside and outside of the chamber 1, etc. It can be automatically opened and closed to supply outside air according to the temperature or reduced pressure state.

11 is a viewing window for the hollow chamber 1; 12 is a display board for temperature, pressure, etc.; 13 is a support tube for the electric motor 5, which has an exhaust passage 14;

Note that, although not shown in the drawings, the hollow chamber 1 is optionally provided with a shelf for placing the items to be dried, a support frame for supporting this shelf, etc.
Of course, all of them should have a structure that takes ventilation effects into consideration.

In the configuration described above, when the electric motor 5 is energized and the rotary blade 6 is rotated, the air in the sealed hollow chamber 1 is gradually exhausted and depressurized by the suction and exhaust action of the rotary blade 6.
The pressure difference between the inside and outside of the hollow chamber 1 gradually increases, but when the pressure difference reaches this pressure difference, 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 rotating action of the rotating blade 6 continues.

In this equilibrium state, air stagnation occurs in the frictional heat generating portion A within the rotation area of the rotating blade 6, and the rotating blade 6
As the frictional action continues to be repeated, frictional heat is generated and the temperature gradually rises, and this frictional heat is sequentially transmitted into the hollow chamber 1, heating the interior to the desired temperature.

Therefore, if the material to be dried is housed in the hollow chamber 1, the release of moisture contained in the material to be dried can be increased due to the reduced pressure effect, and the release of the moisture contained in the material to be dried can be increased due to the heating effect on the material to be dried due to the rise in room temperature. It can promote moisture dissipation and provide highly efficient drying action.

In addition, when the regulating valve 10 is opened from the outside air supply pipe 7 to supply outside air in the process of heating, the temperature inside the hollow chamber 1 decreases, but the temperature inside the hollow chamber 1 decreases by the amount of outside air supplied. Since the vaporized vapor inside is removed by the rotary blade 6 to the outside,
The drying effect can be further promoted.

As mentioned 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 rotates the body while keeping the pressure difference between the inside and outside in a substantially constant equilibrium state. This method involves continuing the rotating action of the body and generating frictional heat through the frictional action between the rotating body and the air, so conventional heaters, fuel, etc. are not used as means for generating heat. It has the characteristic that it does not require any direct heat source and is useful for so-called energy saving.

In addition, frictional heat is obtained by the frictional action between the exhaust rotating body, that is, the rotating blade, and the air in an equilibrium state, so it works synergistically and effectively only by the depressurizing effect, heat generation effect, and rotational effect of the rotating body. It has the advantage of being widely applicable to dryers.

Therefore, its application range is extremely wide and has practical effects, such as drying agricultural and marine products such as shiitake mushrooms and leaf tobacco, as well as clothing and chemicals.

Furthermore, the thermal energy obtained by this invention can be used as a heat source for other heating purposes.

[Brief explanation of the drawing]

The figures show a specific device showing an embodiment of the reduced pressure equilibrium heating method according to the present invention, in which FIG. 1 is a partially cutaway front view, FIG. 2 is a partial front view showing another structure, and FIG. The figure is same as above III-
It is a sectional view taken along line III. 1...Hollow chamber, 4...Suction port, 7...
...Outside air supply pipe, 10...Adjustment valve, a
. . . Frictional heat generating section A is composed of an electric motor 5 which is a rotating body and has rotating blades 6.

Claims (1)

[Claims] 1. The air in the sealed hollow chamber is forcibly sucked in by the rotation of a rotating body and exhausted to the outside, thereby reducing the pressure in the room and keeping the pressure difference between the inside and outside in a substantially constant equilibrium state. At the same time, while maintaining this equilibrium state, the rotating action of the rotating body is continued to promote frictional action with the air. This is a reduced-pressure equilibrium heating method in which the interior of the hollow chamber is heated by the frictional heat generated by the frictional heat. 2 The air inside the sealed hollow chamber is forcibly sucked by the rotating action of the rotating body and exhausted to the outside, reducing the pressure inside the room and keeping the pressure difference between the inside and outside at a nearly constant equilibrium state. At the same time, while maintaining this equilibrium state, the rotating action of the rotating body is continued to promote the frictional action with the air and generate frictional heat, and this frictional heat heats the inside of the hollow chamber. A reduced pressure equilibrium heating method that automatically supplies outside air.