JPH06123555A - Drying process device - Google Patents

Abstract

PURPOSE:To make it possible to dry food which should be dried and raw garbage such as cooking garbage, leftover food produced in the household in a simple manner using a simple constitution, prevent decomposition of these garbages and malodor generated following the decomposition, and prevent the contamination due to condensed water and organic matters of exhaust gas. CONSTITUTION:There are provided an inclined or horizontal storage container 2, a heating element 6 disposed opposite to the mouth part of the container 2 to heat an object to be processed and steam generated therefrom, a blower unit 7 provided at the element 6 for sending air into the container 2, rotary drivers 5, 5a for rotating the container 2, and a moisture condensing unit 4 which covers the outer sides of the container 2 and surrounds the container 2 together with the element 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended for foods requiring a drying treatment, cooking wastes containing a relatively large amount of water, food wastes generated in the kitchen such as leftover foods, etc. The present invention relates to a drying treatment device suitable for household use that can be used hygienically.

[0002]

2. Description of the Related Art In order to preserve foods for a long period of time, it has been widely practiced to carry out a drying treatment to reduce the weight and prevent spoilage. As a method for drying food, in addition to sun drying using sunlight, as drying processing using equipment, there are a heater drying method, a hot air drying method, a microwave drying method, a freeze drying method, a spray drying method, and the like.

These systems play a major role in the field of food preservation because they can dry foods more rapidly than the sun drying system. In addition, recently, it is desired to reduce the amount of food waste that is generated at home like foods and to prevent spoilage.

[0004] Household garbage is collected collectively by each local government, but it is not collected every day and must be stored at home for a certain period until it is collected. During this storage, food waste will rot and smell,
The garbage storage area is soiled with garbage soup to make the garbage dirty.

On the other hand, from the viewpoint of environmental protection, the reduction of garbage is being promoted socially.

Therefore, a method has been devised in which raw garbage is dried like foods to reduce weight and prevent spoilage. further,
There is also a method in which fermentation is performed in the drying process and raw garbage is reused as fertilizer.

[0007]

However, in spite of the large number of industrial drying apparatuses, there are few household drying apparatuses for easily drying food. Moreover, when applying the industrially used drying method to a household drying method, many problems remain.

In the drying method using microwaves, the intensity distribution of the microwaves makes it very difficult to uniformly dry the object to be processed in an apparatus having a small existing space.

In the drying method using a heater, there is a problem in that if the drying temperature is set low, a long drying time is required to prevent overheating and ignition.

Further, regarding the treatment of odors and waste water generated during the drying of food and food waste, there is no small-sized drying device in consideration of deodorization and purification of waste water, and it has been a major problem to deal with them.

An object of the present invention is to provide a drying treatment apparatus which is free from the above-mentioned problems and is suitable for home use.

[0012]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a storage container that is inclined or horizontal, and the storage container that heats an object to be treated in the storage container and steam generated from the storage container. A heating unit provided to face the mouth of the storage unit, a blower unit provided in the heating unit for blowing air into the storage container, a rotation drive unit for rotating the storage container, and an outer cover of the storage container. It is characterized in that it is provided with a moisture condensing unit that surrounds the storage container together with the heating unit.

In this case, it is preferable to provide a heat insulating portion between the moisture condensing portion and the outer periphery of the storage container, and this heat insulating portion can be formed by the vacuum heat insulating peripheral wall of the storage container itself.

[0014]

In the above-mentioned structure of the present invention, the inclined or horizontal storage container is rotationally driven by the drive unit to rotate the object to be treated contained in the storage container, whereby heat radiation and hot air from the heating unit are performed while stirring. Each part is heated evenly by convection and spraying by, and moisture in the object to be processed can be quickly and uniformly evaporated to prevent thermal decomposition of the object to be processed. Attempting to go out of the storage container is heated by the heating unit facing the mouth of the storage container and becomes superheated steam with a large amount of heat, which is blown into the storage container by the air blower and spreads to the details of the object to be processed. Since the heating is performed, it is possible to further accelerate the drying of the object to be processed by evaporation of water. Further, the air blower agitates the heat of the heating part together with the air at the start of heating the object to be treated, but after the object to be treated reaches 100 ° C., the aeration of the steam and the air blowing of the superheated steam is more positively performed. Will be done.

Furthermore, since the steam that blows out of the storage container is condensed together with the odor by the moisture condensing section,
In addition to suppressing the thermal decomposition of the object to be treated, it is possible to suppress the mixing of organic matter into the condensed water and the exhaust gas, and also to prevent the emission of odor.

On the other hand, when the heat insulating section between the moisture condensing section and the outside of the storage container is located, the heat is radiated from the heating section in the storage container and the object to be processed is heated by the heated steam. , Drying can be achieved quickly with good heat efficiency,
The water vapor discharged from the storage container is not isolated from the storage container in an adiabatic state and is not affected by heat, and is efficiently and quickly condensed with odors in the moisture condensing unit. Mixing and odor emission can be suppressed more sufficiently.

When the heat insulating portion is the vacuum heat insulating peripheral wall of the storage container itself, a special heat insulating installation can be omitted to obtain the necessary heat insulating effect.

[0018]

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

FIG. 1 is a longitudinal sectional view of an essential part showing a drying apparatus as a first embodiment of the present invention. In FIG. 1, 1
Is a cylindrical vacuum heat insulating container made of stainless steel, and concentrically receives the storage container 2 for storing and drying the object to be processed, holds it detachably and rotatably, and concentric the outside of the vacuum heat insulating container 1. Of the vacuum heat insulating container 1, the storage container 2, and the condensing part 4 are oriented toward the same side and are held outside the outer case 20 together with the container-type condensing part 4 that covers the inside of the outer case 20. It is open to the public.

A door 3 for opening and closing is provided at the mouth of the condensing section 4, and a heat insulating material 19 is provided inside. A rotation drive unit 5 is provided on the bottom surface of the bottom of the condensing unit 4, and the bottom of the storage container 2 is detachably mounted on the transmission plate 5a facing the bottom of the heat insulating unit 1 and is directly rotated.

Inside the heat insulating material 9 of the door 3, there is provided a heating part 6 made of a sheathed heater and a blower part 7 made of a fan, which faces the mouth of the storage container 2, and the blower part 7 is a storage container. It is designed to blow air inside 2. Storage container 2
A stir plate 8 is provided near the bottom of the inner peripheral surface of the drainage pipe 9 for discharging the moisture condensed in the lowest part of the condenser 4 to the outside.
Is provided.

Reference numeral 10 shown in the drawing is a temperature detecting portion provided on the door 3 so as to be positioned above the mouth portion of the storage container 2, and 11 is a temperature control portion for controlling the heating portion 6 from the storage container temperature. 12
Is a heat insulating material installed on the bottom surface of the condensing part 4, and the heat insulating container 1
Forms the bottom of. Reference numeral 13 is provided at the mouth of the direct-air insulating container 1 to facilitate the rotation of the housing 2, and holds the mouth of the housing 2 from around the outer circumference.

Next, the operation will be described. First open the door 3,
Into the storage container 2, foods, foods, and other objects to be treated are placed.
Next, the sheath heater, which is the heating unit 6, is energized to radiate the heat from the sheath heater into the storage container 2 to heat the object to be processed contained in the storage container 2. At the same time, by operating the fan that is the blower unit 7, the hot air heated by the heating unit 6 is also blown to perform heating.

At this time, by rotating the storage container 2 by the rotation drive unit 5, the object to be treated contained in the storage container 2 is lifted by the inner surface of the storage container 2 and the stirring member 8 to a limit position exceeding the angle of repose. Then, repeat the natural fall and stir. At the same time, the storage container 2 during the drying process
Temperature is detected by the temperature detection unit 10, and the temperature control unit 11 adjusts the input power to the heater which is the heating unit 6 based on the temperature to control the heating state of the object to be processed.

The steam generated from the object to be processed by the heating is about to come out of the storage container 2, and a part of the steam is reheated by the heating unit 6 and is blown to the object to be processed again as superheated steam having a large amount of heat.

The water vapor entering the condensing section 4 is efficiently and promptly condensed together with the odor while being insulated from the storage container 2 by the vacuum insulation container. The condensed water passes through the drain pipe 9 and is discharged to the outside of the device.

In the initial stage of heating the object to be treated, the air blower 7 agitates the heat of the heating unit 6 together with air and blows the heat into the storage container 2. However, after the object to be treated reaches 100 ° C. The stirring and the blowing of superheated steam are performed.

In the present example, an evaluation test of uniform drying was conducted using raw garbage as a sample. In the conventional heating method using a heater by conduction and radiation, it is difficult to heat the entire object to be processed uniformly, because only the heating surface is dried and becomes a heat insulating layer.

However, by using the combination of the heater and the fan in this embodiment, the sample was heated in detail by hot air,
By using superheated steam with a large amount of heat for heating,
It was possible to heat efficiently and uniformly.

Further, by using the vacuum heat insulating container 1 having excellent heat insulating properties, the whole sample such as garbage can be heated with high heat efficiency and dried quickly.

Further, by tilting and rotating the storage container 2, the sample in the storage container is frequently agitated to minimize sticking of the storage container 2 and adhesion of the sample to the inner surface of the container 2 in the latter stage of drying. I was able to suppress it. The inclination angle at this time can be arbitrarily selected from 40 to 90 degrees with reference to the vertical direction. The larger the angle, the greater the stirring effect.

Further, by controlling the rotation of the storage container 2 and performing normal reversal, more uniform and quick heating can be performed, and in addition, the crushing effect on the sample during the drying process is increased and the volume of the sample is sufficiently reduced. I was able to achieve it.

Further, in the conventional case, the sample becomes sticky due to its water content at the initial stage of heating, but in this method, the superheated air is dried from the surface of each part to the details of the agitated sample, so that the storage container is used. The sample is unlikely to stick to the wall surface of 2, and the storage container 2 is unlikely to get dirty. Further, by controlling the input power to the heater while keeping the temperature of the storage container 2 constant and setting the upper limit to 130 ° C., it was possible to uniformly heat the sample, suppress the occurrence of charring, and prevent ignition.

With the above structure, the object to be processed can be processed to a substantially absolute dry state, and the prevention of putrefaction is achieved. In addition, uniform drying and heating in a steam atmosphere can control the generation of bad odor due to oxidation. Further, the pulsation of water vapor by the fan improves heat transfer on the wall surface of the condensing part, so that the water vapor is efficiently condensed, and at the same time, the odor in the water vapor is also greatly condensed, so that the deodorizing effect is also improved. Compared with the conventional conduction and radiation type heater heating method,
The drying treatment time could be greatly reduced.

In the present embodiment, when the heater output was the same, the processing time could be shortened by about 1/4 depending on the presence or absence of the fan.

FIG. 2 is a longitudinal sectional view of the essential parts showing a drying apparatus as a second embodiment of the present invention. The same components as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted. The second embodiment differs from FIG. 1 in that the vacuum heat insulating container 1 of the first embodiment is eliminated, and a tub-shaped vacuum heat insulating container 14 having a peripheral wall of the container itself as a vacuum heat insulating wall is provided. The point is that the object to be processed is stored and processed.

Even in the case of the present embodiment, the operation similar to that of the first embodiment is performed. In particular, in this embodiment, since the vat-shaped vacuum heat insulating storage container 14 is directly used as a storage container for the object to be processed, the storage container bottom portion also has a vacuum heat insulating portion, so that the storage container bottom portion also has a heat insulating effect. Since it is improved as in the case of the body, uniform drying of the object to be treated and improvement of heating efficiency were achieved. Further, since the special vacuum heat container in the case of the first embodiment and the heat insulating material at the bottom of the condenser 4 are not required, the number of parts is reduced, so that the structure of the device can be simplified and downsized. I was able to.

In each of the above embodiments, the garbage is dried. However, the present invention is not limited to this, and by controlling the drying temperature level, it can be used for the drying treatment or cooking of the entire food product. A deodorizing device may be attached to the condensing unit to deodorize odors generated during and after drying the processed material. By coating the inside of the storage container with a fluororesin or the like, it is possible to prevent the object to be treated from adhering to the storage container.

In each of the embodiments, the air blower and the heater are installed on the same door. However, at any position where the heat generated by the heater and the superheated steam reheated by the heater can be radiated to the object to be blown It may be installed at any position, and the position facing the mouth of the processing container is not particularly limited. Any type of heater or fan can be used. The heating part may be any kind of heating element such as a halogen lamp and a ceramic heater, in addition to the sheathed heater.

Further, although the rotation drive unit is installed outside the bottom of the condensing container, any configuration of rotating the storage container is not limited to the direct drive of the motor.

[0041]

EFFECTS OF THE INVENTION According to the present invention, each part is heated uniformly by heat radiation from the heating part and convection and blowing by hot air while stirring the part to be treated, and the water content in the part to be treated is detailed. Even when the object to be processed reaches 100 ° C, the steam that is generated is heated especially even after suppressing the thermal decomposition of the object to be processed, and it is blown as superheated steam with a large amount of heat. Since the details of the object to be processed are spread even more and the drying of the object to be processed by evaporation of water is further promoted, the object can be uniformly and quickly dried without thermal decomposition by a simple device. Is especially effective as

Moreover, since the steam that blows out of the storage container is condensed together with the odor by the moisture condensing unit,
In addition to preventing thermal decomposition of the object to be treated and preventing it from spoiling, it also suppresses the mixing of organic matter into condensed water and exhaust gas and prevents the emission of odors, so it does not interfere with environmental hygiene and is comfortable. Used for.

On the other hand, when the heat insulating section between the moisture condensing section and the outer periphery of the storage container is located, heat is radiated from the heating section in the storage container and the object to be processed is heated by the heated steam. The drying can be achieved quickly with good heat efficiency, and the required processing time is shortened.

Further, the water vapor discharged from the storage container is efficiently and promptly condensed with the odor in the moisture condensing section without being insulated from the inside of the storage container in an adiabatic state and affected by heat. Since the mixture of organic substances and the emission of odor are sufficiently suppressed, comfortable use can be guaranteed.

If the heat insulating portion is the vacuum heat insulating peripheral wall of the storage container itself, a special heat insulating installation can be omitted to obtain the necessary heat insulating effect, and the increase in cost due to the heat insulating structure can be suppressed. You can

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing a drying processing apparatus as a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part showing a drying apparatus as a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum insulation container 2 Storage container 4 Condensing part 5 Rotation drive part 5a Transmission board 6 Heating part 7 Blower part 14 Vacuum insulation storage container

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jiro Suzuki, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. An inclined or horizontal storage container, a heating unit provided to face the mouth of the storage container so as to heat an object to be treated in the storage container and steam generated therefrom, and the heating unit. A blower unit provided in the storage unit for blowing air into the storage container, a rotation drive unit that rotates the storage container, and a moisture condensing unit that covers the storage container outside the storage container and surrounds the storage container together with the heating unit. A drying treatment device. 2. The drying treatment apparatus according to claim 1, further comprising a heat insulating portion provided around the outer circumference of the storage container, the heat insulating portion being provided between the heat insulating portion and the moisture condensing portion. 3. The drying apparatus according to claim 2, wherein the heat insulating portion is a vacuum heat insulating peripheral wall of the storage container itself.