KR20160135869A - a Microwave absorber system of Dryer using the microwave - Google Patents

a Microwave absorber system of Dryer using the microwave Download PDF

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Publication number
KR20160135869A
KR20160135869A KR1020150068594A KR20150068594A KR20160135869A KR 20160135869 A KR20160135869 A KR 20160135869A KR 1020150068594 A KR1020150068594 A KR 1020150068594A KR 20150068594 A KR20150068594 A KR 20150068594A KR 20160135869 A KR20160135869 A KR 20160135869A
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KR
South Korea
Prior art keywords
microwave
magnetron
conveyor
frame
microwaves
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Application number
KR1020150068594A
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Korean (ko)
Inventor
백채현
박철
정성욱
Original Assignee
주식회사 지구마그넷
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Priority to KR1020150068594A priority Critical patent/KR20160135869A/en
Publication of KR20160135869A publication Critical patent/KR20160135869A/en

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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/005—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment
    • A23L3/01—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment using microwaves or dielectric heating
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/36—Freezing; Subsequent thawing; Cooling
    • A23L3/365—Thawing subsequent to freezing
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/40—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by drying or kilning; Subsequent reconstitution
    • A23L3/54—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by drying or kilning; Subsequent reconstitution using irradiation or electrical treatment, e.g. ultrasonic waves
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
    • A23L5/30—Physical treatment, e.g. electrical or magnetic means, wave energy or irradiation
    • A23L5/36—Physical treatment, e.g. electrical or magnetic means, wave energy or irradiation using irradiation with frequencies of more than 10 MHz
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nutrition Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Toxicology (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The present invention relates to a microwave absorber of a dryer using a microwave, more particularly to a microwave absorber using a microwave, wherein the output energy of the microwave is used to rapidly dry the food in the case of agricultural and fishery products, To the outside can be suppressed as much as possible.
The constitution of the present invention comprises a frame (10) forming a frame body,
A conveyor 20 for circulating a guide of the rollers 21 rotatably supported on both sides of the frame 10,
The magnetron mounting waveguide 36a and the magnetron mounting waveguide 36a are disposed at the positions of the mounting holes 32 of the magnetron mounting waveguide 36 and the magnetron mounting waveguide 36a, )and,
A drying chamber 40 for drying or defrosting agricultural and marine products that are irradiated with microwaves from the magnetron 35 and progressed by microwaves,
A power supply chamber 50 in which the transformers 51 are arranged to supply power to the magnetrons 35 and a magnetron 50 disposed on the inlet side and the outlet side of the frame 10 on which the conveyor 20 travels, The support frame members 63 are fixedly disposed on the upper and lower portions of the conveyor 20 so as to absorb the leakage of the microwaves irradiated from the support frame member 35 and the absorption member 62 And a microwave shielding and absorbing part 60 attached thereto.

Description

[0001] The present invention relates to a microwave absorber system of a dryer using microwave,

The present invention relates to a microwave absorber of a dryer using a microwave, and more particularly, to a microwave absorber using microwaves, in which the output energy of a microwave is used to rapidly dry the food of agricultural and fishery products, will be.

Generally, a microwave oven is equipped with a microwave output energy oscillator, a magnetron, and a power supply unit for microwave generation.

Recently, various methods have been studied for solving problems such as quality, productivity, and cost of drying and thawing agricultural and marine products and advanced functional materials at domestic and overseas sites. One of them is interested in drying and thawing methods using microwaves to be. Conventional thawing methods up to now raise the temperature first from the surface of the food in contact with the outside air, and the heat is transferred to the inside of the frozen food by the heat conduction of the elevated temperature, and the whole thawing is performed.

However, when the microwave is used, the kinetic energy is changed into thermal energy in the entire portion where the microwave penetrates, so that the inside and the outside of the frozen food are simultaneously heated within a short time, There is an advantage.

A microwave is irradiated to the frozen food through a waveguide using a 2,450 MHz microwave generating magnetron used in a general microwave oven. To this end, a high voltage transformer for controlling the input power, an air cooling fan for cooling, and a noise filter are additionally attached .

Using this principle, a small amount of frozen food was thawed in a microwave oven, which is now partially used at home.

However, since the microwave oven has a high frequency of 2,450 MHz and a short wavelength of 12 cm, it has not been developed specifically for thawing food. Therefore, when the size of the food is large or the throughput is large, there are many restrictions to thaw using a microwave oven There is a problem that it is difficult to obtain a uniform thawing result. Also, the ability to dry large quantities of food can not be expected.

On the other hand, there are natural drying method and artificial drying method for drying various kinds of agricultural and marine foods. The natural drying method using solar heat and natural ventilation has a limitation in that moisture can be removed from foods, takes a long time to dry, may contaminate foreign materials or dust during drying, and may be spoiled. Recently, artificial drying have.

The artificial drying method includes an air circulation drying method, a cabinet drying method, a vacuum drying method, and a freeze drying method.

The cabinet drying method uses air heaters, blowers and shelves, etc., and the food is put on a shelf and heated to blow dry the food.

Korea Patent Registration No. 10-0621718 (Registration date August 31, 2006) Korean Patent Publication No. 10-1986-0008419 (published November 15, 1986) Korean Patent Publication No. 10-2015-0017520 (Published on Feb. 17, 2015)

Conventionally, a food drier includes a heat wire, an electric blower fan, a temperature sensor, a drying table, and a filter. The drying table is stacked in a cabinet style enclosure in multiple stages and has an air ventilation structure.

When the air is heated by the hot wire, the electric blower fan is operated to blow hot air to the drying table to heat the food placed on the drying table.

Therefore, since the food is simply dried by the blowing of the hot air, it is not only low in utilization, but also has a low thermal efficiency and takes a long time to dry.

Also, in the case of food thawing, a small amount of frozen food was thawed in a microwave oven, which is partially used at home.

However, in the conventional commercial microwave oven, the frequency of the microwave of 2,450 MHz is relatively high and the wavelength length is as short as 12.2 cm. Since the microwave is not developed for thawing of food, when the size of the food is large or the throughput is large, There is a problem that it is difficult to thaw and there is a problem that it is difficult to obtain a uniform thawing result.

And the internal volume is limited when microwave irradiation is performed by filling the contents intended to be dried into a closed enclosure.

Accordingly, since the drying and thawing of the contents to be dried can not be performed continuously and rapidly, the workability is remarkably lowered and there is a problem that it can not be used for industrial use.

It is an object of the present invention to provide a microwave absorber for a dryer and a thawing machine using microwaves, which can dry or defrost a large quantity of agricultural and marine products continuously more rapidly.

It is another object of the present invention to provide a microwave absorber for a thawing machine using a microwave capable of realizing uniform thawing within a short time at any time regardless of the size and the processing capacity of the object food.

It is still another object of the present invention to provide a microwave absorber for a dryer and a thawing machine using microwaves, which can be dried and thawed continuously while the contents are moved into the drying chamber along the conveyor.

It is still another object of the present invention to provide a microwave absorber for a dryer and a thawing machine using a microwave, which can be operated in a safer condition by suppressing the leakage of harmful microwaves leaking into the inlet or outlet side space where the conveyor advances I have to.

In order to accomplish the above object, the present invention provides a frame structure comprising a frame (10)

A conveyor 20 for circulating a guide of the rollers 21 rotatably supported on both sides of the frame 10,

A magnetron mounting chamber 30 disposed at an upper side of the conveyor 20 and provided with magnetrons 35 at positions of mounting holes 32 of a blocking plate 31 to be fastened to the magnetron mounting waveguide 36a, A drying chamber 40 for drying or defrosting the agricultural and marine products which are irradiated with microwaves from the microwave 35 and progressed by microwaves,

A power supply room 50 in which the transformers 51 are disposed to supply power to the magnetrons 35,

The conveyor 20 is disposed on the entrance side and the outlet side of the frame 10 on which the conveyor 20 advances so that the leakage harmful waves of the microwaves irradiated from the magnetron 35 are not leaked to the outside, And a microwave absorbing portion 60 in which supporting frame bodies 63 are fixedly arranged on the upper and lower sides and an absorbing member 62 is attached to the end portion of the supporting body 63. [

The absorbing member 62 is made of rubber or silicone material containing a ferrite component.

According to the present invention, harmful microwaves leaking into the inlet or outlet side space where the conveyor advances can be prevented from leaking to the utmost, so that the microwave can be operated in a safer condition.

In addition, the product is excellent in durability and performance, and can be uniformly dried and defrosted in a short period of time regardless of the size and processing capacity of the target product.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view showing the entire apparatus of the present invention. Fig.
2 is an overall plan view of the present invention.
3 is a plan view of a marketron installed waveguide connection blocking plate of the present invention.
4 is a partially enlarged cross-sectional view of the drying chamber structure of the present invention.
FIG. 5 is an enlarged cross-sectional view showing a magnetron and a waveguide installed in a Marknetron-installed waveguide connection blocking plate of the present invention. FIG.
6 is an exploded perspective view showing a configuration of a wave guide.
7 is a partially enlarged view showing a state in which a transformer in a power supply room is disposed;
8 is a perspective view showing a state in which an absorbent member is attached to a support frame body of a microwave absorbing unit;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the present invention is an example of a device of a thawing machine for simultaneous drying of a frozen food or a fused (hybrid) dryer for microwave output energy irradiated from a magnetron 35 fused at a frequency of 2450 MHz and a remaining 915 MHz as an example Explain.

As shown in FIG. 1, the dryer is installed with various structures and components to be described later by the frame 10 constituting the main body, and then the cover is wrapped around the cover.

The covers installed to enclose the interior are vented for ventilation to prevent overheating and cooling of the components.

The drying chamber 40 is opened so that an object to be moved along with the progress of the conveyor 20 can be entered and advanced. The conveyor 20 includes a roller 21 rotatably supported at both ends of the frame 10 ).

The one-side roller 21 is driven by a motor (not shown) so that the conveyor 20 is circulated at a specified speed.

The magnetron mounting chamber 30 is disposed on the upper portion of the drying chamber 40. The mounting holes 32 are formed in the magnetron mounting waveguide connecting and disconnecting plate 31 that divides the drying chamber 40 and the magnetron mounting chamber 30 into a predetermined size And the magnetron mounting waveguides 36a are fixedly installed mainly by bolts and nuts.

In the present invention, 27 magnetron mounting waveguides 36a are provided in a predetermined size. As shown in the drawing, the mounting holes 32 are shown to have 9 rows of 9 rows and 27 columns of 3 rows.

When a microwave is generated from the magnetron 35 by attaching a microwave output energy transmission cavity type cavity waveguide 36b to the lower portion of the blocking plate 31, the magnetron installation waveguide 36a and the cavity box waveguide 36b are formed. The inside of the drying chamber 40 is irradiated.

Therefore, when power is supplied through the control circuit and the transformer 51 and the magnetron 35 is operated, the microwave having energy is irradiated to the drying chamber 40 through the inside of the cavity box waveguide 36b to dry or defrost the object It will be possible.

In the cavity box type waveguide 36b, an outlet 37 is formed in the lower portion so that the microwave can be transmitted to the drying chamber 40. Microwaves can be transmitted to the inside of the outlet 37, A blocking plate 38 is provided.

As the material of the blocking plate 38, Teflon or mica is mainly formed into a square plate shape with a certain thickness, and Teflon or mica has a property of passing microwaves.

In addition, it is possible to prevent water or various foreign substances from entering the waveguide 36 through the outlet 37 and damaging the magnetron 35.

In order to operate the magnetron 35, a power supply circuit is provided.

The power source is controlled in such a manner that a power supply of 380 V to 220 V (50/60 Hz) in three phases or single phases from the outside is cut off or connected to the supply of the power by the control of the input power adjusting switches.

In the present invention, the outputs of the transformers 51 necessary for the operation of the magnetron 35 can be divided and taken into account, and the transformers 51 are connected in parallel to constitute a dryer.

That is, in the present invention, the transformers 51 have a capacity of 1 kW microwave output each, and a plurality of circuits are formed in parallel to supply necessary power to each magnetron 35.

In this way, the microwaves are generated by operating the magnetron 35 with the output supplied through the power adjusting unit in which the transformers 51 of 1 kW class are combined in parallel.

Here, the transformer 51 of the power supply room 50 is a stationary transformer whose output is arranged at a capacity of 1 kW class each, the output of which is fixed, and the rest of the transformer 51 whose output is varied by the adjustment of the inverter 52 And is arranged in a variable transformer.

The variable transformer is suitably regulated by the user in the power adjuster in the range of 0.2-1 kW.

Therefore, the performance of the magnetron 35 can be controlled in various ways from a minimum range to a maximum range. Therefore, the magnetron 35 can be dried and defrosted in an optimal state according to conditions such as the type and volume of the material to be dried and defrosted.

In addition, since a circuit having a low output of 1 kW is connected in parallel, the product cost can be lowered, a high peak current is not required, the circuit is stable, and power consumption is reduced, which is economical.

Both sides of the conveyor 20 are conveyed in the drying chamber 40, and a bottom plate for collecting the moisture generated in the drying process and discharging the moisture to the outside is positioned.

A magnetron mounting waveguide connection blocking plate 31 having magnetron mounting waveguides 36a fastened thereon is disposed at an upper portion thereof and both side walls are closed with an iron plate to prevent harmful leakage of the microwave leakage wave to the outside.

At this time, a removable perforated plate is attached to the side wall for discharging excessive water vapor generated during drying and for removing contaminants in the drying chamber 40.

A cavity box type waveguide 36b is attached to the lower portion of the blocking plate 31 so that the microwaves generated from the magnetron 35 pass through the cavity box waveguide 36b and the conveyor 20 in the drying chamber 40 The target material to be moved is irradiated. At this time, the microwave generated from the magnetron 35 is set to a part of 2450 MHz and the remaining 915 MHz.

A microwave shielding and absorbing unit 60 is installed on the entrance side and the exit side of the frame 10 on which the conveyor 20 advances to shield and minimize leakage harmful waves so that leakage harmful waves of microwaves are not leaked to the outside.

The microwave absorbing part 60 absorbs or discharges the microwaves to minimize the leakage of harmful waves leaking into the gap between the inlet and the outlet to be conveyed for advancing the conveyor 20 when the magnetron 35 is irradiated into the drying chamber 40. [ And attenuates.

The microwave absorbing part (60) of the present invention fixes the absorbing member (62) having a superior microwave absorbing effect to the supporting frame body (63).

The absorptive member 62 is formed into a pad shape with a size corresponding to the length of the support frame 63, and is bonded to the support frame 63 mainly by a rubber or silicone material containing ferrite.

When a plurality of absorptive members 62 having such a structure are fixed to the supporting frame bodies 63 toward the conveyor 20 in a fixed manner, harmful microwaves irradiated and leaked from the magnetron 35 escape to the outside of the drying chamber 40 Absorbed.

A plurality of holes 64 are drilled in the support frame 63 to be fixed to the case or the frame 10 through bolts or the like.

Therefore, leakage of harmful leaked microwave to the outside of the dryer can be suppressed to the maximum, which enables continuous operation for industrial use in a safer working environment.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

The present invention is mainly applied to a dryer or a thawing technique. In particular, the present invention is applied to a field using a microwave, which is capable of drying various kinds of agricultural and fishery foods or defrosting frozen food evenly in a natural state in a short time and cooking them immediately.

10 - Frame 20 - Conveyor
30 - Magnetron mounting chamber 35 - Magnetron
36a - Magnetron mounting waveguide 36b - Cavity box waveguide
38 - blocking plate 40 - drying chamber
50 - Power supply room 51 - Trans
60 - Microwave shielding absorbing part 62 - Absorbing member
63 - Support frame 64 - Hole

Claims (2)

A frame 10 forming a frame,
A conveyor 20 for circulating a guide of the rollers 21 rotatably supported on both sides of the frame 10,
A magnetron mounting chamber 30 positioned above the conveyor 20 and provided with a magnetron 35 and a magnetron mounting waveguide 36a at positions of mounting holes 32 of the magnetron mounting waveguide connection blocking plate 31,
A drying chamber 40 for drying or defrosting agricultural and marine products that are irradiated with microwaves from the magnetron 35 and progressed by microwaves,
A power supply room 50 in which the transformers 51 are disposed to supply power to the magnetrons 35,
The microwaves are irradiated from the magnetron 35 to be absorbed without being leaked out to the upper and lower portions of the conveyor 20 so as to be absorbed by the conveyor 20, And a microwave shielding absorber (60) in which the frame members (63) are fixedly arranged and an absorbing member (62) is attached to an end of the supporting frame member (63).
The microwave absorber according to claim 1, wherein the absorber (62) is formed in a pad shape of a rubber or a silicon material containing ferrite.
KR1020150068594A 2015-05-18 2015-05-18 a Microwave absorber system of Dryer using the microwave KR20160135869A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150068594A KR20160135869A (en) 2015-05-18 2015-05-18 a Microwave absorber system of Dryer using the microwave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150068594A KR20160135869A (en) 2015-05-18 2015-05-18 a Microwave absorber system of Dryer using the microwave

Publications (1)

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KR20160135869A true KR20160135869A (en) 2016-11-29

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Country Status (1)

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